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Raza M, Farooq U, Ali Khan S, Ullah Z, Ehtisham Khan M, Kashif Ali S, Bakather OY, Alam S, Yasir Khan M, Ali W, Ulla Khan A, Al Zoubi W, Bashiri AH, Zakri W. Preparation and Spectrochemical characterization of Ni-doped ZnS nanocomposite for effective removal of emerging contaminants and hydrogen Production: Reaction Kinetics, mechanistic insights. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2024; 318:124513. [PMID: 38815298 DOI: 10.1016/j.saa.2024.124513] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/20/2024] [Revised: 05/09/2024] [Accepted: 05/22/2024] [Indexed: 06/01/2024]
Abstract
In this study, we report the successful synthesis of Ni-doped ZnS nanocomposite via a green route using ethanolic crude extract of Avena fatua. The as-synthesized nanocomposite was comprehensively characterized using Dynamic light scattering (DLS), Zeta potential, scanning electron microscopy (SEM), Transmission electron microscopy (TEM), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), Fourier transform infrared spectroscopy (FTIR), and Atomic force microscopy (AFM). These analyses provided detailed insights into the size, morphology, composition, surface properties, and structural characteristics of the nanocomposite. Subsequently, the synthesized nanocomposite was evaluated for their photocatalytic performance against the organic dye Methyl orange. Remarkably, the nanocomposite exhibited rapid and efficient degradation of Methyl orange, achieving 90 % degradation within only 30 min of irradiation under UV light. Moreover, the photocatalyst demonstrated an exceptional hydrogen production rate, reaching 167.73 µmolg-1h-1, which is approximately 4.5 times higher than that of its pristine counterparts. These findings highlight the significant potential of Ni-doped ZnS nanocomposite as highly efficient photocatalysts for wastewater treatment and hydrogen production applications.
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Affiliation(s)
- Mohsin Raza
- Additive Manufacturing Institute, College of Mechatronics and Control Engineering, Shenzhen University, Shenzhen, 518060, China
| | - Umar Farooq
- Department of Chemistry, The Islamia University of Bahawalpur, Baghdad-ul-Jadeed Campus, Bahawalpur 63100, Pakistan
| | - Salman Ali Khan
- Tunneling Group, Biotechnology Centre, Doctoral School, Akademicka 2, Silesian University of Technology, 44-100 Gliwice, Poland
| | - Zafran Ullah
- Department of Chemical Engineering, Diponegoro University, Jl. Prof. Sudharto, SH, Semarang 50275, Indonesia
| | - Mohammad Ehtisham Khan
- Department of Chemical Engineering Technology, College of Applied Industrial Technology, Jazan University, Jazan 45142, Saudi Arabia.
| | - Syed Kashif Ali
- Department of Physical Sciences, Chemistry Division, College of Science, Jazan University, P.O. Box. 114, Jazan 45142, Saudi Arabia; Nanotechnology Research Unit, College of Science, Jazan University, P.O. Box. 114, Jazan 45142, Saudi Arabia
| | - Omer Y Bakather
- Department of Chemical Engineering, College of Engineering, Jazan University, P.O. Box. 706, 45142 Jazan, Saudi Arabia
| | - Sarfaraz Alam
- Tunneling Group, Biotechnology Centre, Silesian University of Technology, Krzywoustego, 44-100 Gliwice, Poland
| | - Muhammad Yasir Khan
- Vaccine and Immunotherapy Unit, King Fahad Medical Research Center, King Abdul-Aziz University KSA, Saudi Arabia; Department of Microbiology, Sarhad Institute of Allied Health Sciences, Faculty of Life Sciences, Sarhad University of Science & Information Technology, Pakistan
| | - Wahid Ali
- Department of Chemical Engineering Technology, College of Applied Industrial Technology, Jazan University, Jazan 45142, Saudi Arabia
| | - Anwar Ulla Khan
- Department of Electrical Engineering Technology, College of Applied Industrial Technology, Jazan University, Jazan 45142, Saudi Arabia
| | - Wail Al Zoubi
- Integrated Materials Chemistry, School of Materials Science and Engineering, Yeungnam University, Gyeongsan 38541, Republic of Korea.
| | - Abdullateef H Bashiri
- Department of Mechanical Engineering, College of Engineering, Jazan University, P. O. Box 114, Jazan 45142, Saudi Arabia
| | - Waleed Zakri
- Department of Mechanical Engineering, College of Engineering, Jazan University, P. O. Box 114, Jazan 45142, Saudi Arabia
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2
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Farhan S, Hassan Raza A, Yang S, Yu Z, Wu Y. Boosted photocatalytic hydrogen evolution of S-scheme N-doped CeO 2-δ@ZnIn 2S 4 heterostructure photocatalyst. J Colloid Interface Sci 2024; 669:430-443. [PMID: 38723532 DOI: 10.1016/j.jcis.2024.04.189] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2024] [Revised: 04/15/2024] [Accepted: 04/26/2024] [Indexed: 05/27/2024]
Abstract
The advancement of highly effective heterojunction photocatalysts with improved charge separation and transfer has become a crucial scientific perspective for utilizing solar energy. In this study, we developed the S-scheme heterostructure by depositing N-doped CeO2-δ (NC) nanoparticles onto two-dimensional ZnIn2S4 (ZIS) nanosheets via hydrolysis strategy for significantly enhanced photocatalytic hydrogen evolution reaction. The optimal H2 generation rate of ∼ 798 μmol g-1 h-1 was achieved for NC-3@ZIS under solar light irradiation, which is about 18 and 2 times higher than those of pristine CeO2 (∼44 μmol g-1 h-1) and ZIS (∼358 μmol g-1 h-1), respectively. The photogenerated electrons from NC interact with the photogenerated holes of ZIS driven by an internal electric field, confirmed by In-situ KPFM, DFT calculation, and XPS results. According to EPR and photoelectrochemical measurements, NC-3@ZIS composite shows dramatically high separation efficiency of photogenerated charge carriers. This study provides a new approach for developing non-noble metal S-scheme heterojunctions with enhanced photocatalytic hydrogen evolution.
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Affiliation(s)
- Shumail Farhan
- Faculty of Materials Science and Chemistry, China University of Geosciences, 68 Jincheng Street, Wuhan 430078, China
| | - Asif Hassan Raza
- Faculty of Materials Science and Chemistry, China University of Geosciences, 68 Jincheng Street, Wuhan 430078, China
| | - Songyu Yang
- Faculty of Materials Science and Chemistry, China University of Geosciences, 68 Jincheng Street, Wuhan 430078, China
| | - Zhixian Yu
- Faculty of Materials Science and Chemistry, China University of Geosciences, 68 Jincheng Street, Wuhan 430078, China
| | - Yan Wu
- Faculty of Materials Science and Chemistry, China University of Geosciences, 68 Jincheng Street, Wuhan 430078, China.
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3
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Liu H, Huang Z, Qiao H, Qi X. Characteristics and performance of layered two-dimensional materials under doping engineering. Phys Chem Chem Phys 2024; 26:17423-17442. [PMID: 38869477 DOI: 10.1039/d4cp01261e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/14/2024]
Abstract
In recent years, doping engineering, which is widely studied in theoretical and experimental research, is an effective means to regulate the crystal structure and physical properties of two-dimensional materials and expand their application potential. Based on different types of element dopings, different 2D materials show different properties and applications. In this paper, the characteristics and performance of rich layered 2D materials under different types of doped elements are comprehensively reviewed. Firstly, 2D materials are classified according to their crystal structures. Secondly, conventional experimental methods of charge doping and heterogeneous atom substitution doping are summarized. Finally, on the basis of various theoretical research results, the properties of several typical 2D material representatives under charge doping and different kinds of atom substitution doping as well as the inspiration and expansion of doping systems for the development of related fields are discussed. Through this review, researchers can fully understand and grasp the regulation rules of different doping engineering on the properties of layered 2D materials with different crystal structures. It provides theoretical guidance for further improving and optimizing the physical properties of 2D materials, improving and enriching the relevant experimental research and device application development.
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Affiliation(s)
- Huating Liu
- School of Electrical and Electronic Engineering, Wuhan Polytechnic University, Wuhan 430023, China.
- Hunan Key Laboratory for Micro-Nano Energy Materials and Devices, School of Physics and Optoelectronic, Xiangtan University, Xiangtan, 411105, China.
| | - Zongyu Huang
- Hunan Key Laboratory for Micro-Nano Energy Materials and Devices, School of Physics and Optoelectronic, Xiangtan University, Xiangtan, 411105, China.
| | - Hui Qiao
- Hunan Key Laboratory for Micro-Nano Energy Materials and Devices, School of Physics and Optoelectronic, Xiangtan University, Xiangtan, 411105, China.
| | - Xiang Qi
- Hunan Key Laboratory for Micro-Nano Energy Materials and Devices, School of Physics and Optoelectronic, Xiangtan University, Xiangtan, 411105, China.
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4
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Jin J, Liu C, Dai C, Zeng C, Jia Y, Liu X. Boosting the activity for organic pollutants removal of In 2O 3 by loading Ag particles under natural sunlight irradiation. ENVIRONMENTAL RESEARCH 2024; 251:118649. [PMID: 38458589 DOI: 10.1016/j.envres.2024.118649] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/12/2023] [Revised: 02/01/2024] [Accepted: 03/05/2024] [Indexed: 03/10/2024]
Abstract
A novel photocatalyst In2O3 with loading Ag particles is prepared via a facile one-step annealing method in air atmosphere. The Ag/In2O3 exhibits considerable photoactivity for decomposing sulfisoxazole (SOX), tetracycline hydrochloride (TC), and rhodamine B (RhB) under natural sunlight irradiation, which is much higher than that of pristine In2O3 and Ag species. After natural sunlight irradiation for 100 min, 70.6% of SOX, 65.6% of TC, and 81.9% of RhB are degraded over Ag/In2O3, and their corresponding chemical oxygen demand (COD) removal ratio achieve 95.4%, 38.4%, and 93.6%, respectively. A batch of experiments for degrading SOX with adjusting pollutant solution pH and adding coexisting anions over Ag/In2O3 are carried out to estimate its practical application prospect. Particularly, the as-prepared Ag/In2O3 possesses a superior stability, which exhibits no noticeable deactivation in decomposing SOX after eight cycles' reactions. In addition, the Ag/In2O3 coated on a frosted glass plate, also possesses a superior activity and stability for SOX removal, which solve the possible second pollution of residual powdered catalyst in water. Ag particles on In2O3 working as electron accepter improve charge separation and transfer efficiency, as well as the photo-absorption and organic pollutants affinity, leading to the boosted photoactivity of Ag/In2O3. The photocatalytic mechanism for degrading SOX and degradation process over Ag/In2O3 has been systemically investigated and proposed. This work offers an archetype for the rational design of highly efficient photocatalysts by metal loading.
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Affiliation(s)
- Jiahui Jin
- Institute of Advanced Materials, College of Chemistry and Chemical Engineering, Key Lab of Fluorine and Silicon for Energy Materials and Chemistry of Ministry of Education, Jiangxi Normal University, Nanchang, 330022, China
| | - Chengyin Liu
- School of Environmental and Material Engineering, Yantai University, Yantai, 264005, Shandong, China
| | - Chunhui Dai
- Jiangxi Key Laboratory for Mass Spectrometry and Instrumentation, East China University of Technology, Nanchang, 330013, China
| | - Chao Zeng
- Institute of Advanced Materials, College of Chemistry and Chemical Engineering, Key Lab of Fluorine and Silicon for Energy Materials and Chemistry of Ministry of Education, Jiangxi Normal University, Nanchang, 330022, China.
| | - Yushuai Jia
- Institute of Advanced Materials, College of Chemistry and Chemical Engineering, Key Lab of Fluorine and Silicon for Energy Materials and Chemistry of Ministry of Education, Jiangxi Normal University, Nanchang, 330022, China
| | - Xin Liu
- Institute of Advanced Materials, College of Chemistry and Chemical Engineering, Key Lab of Fluorine and Silicon for Energy Materials and Chemistry of Ministry of Education, Jiangxi Normal University, Nanchang, 330022, China.
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5
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Gunawan D, Zhang J, Li Q, Toe CY, Scott J, Antonietti M, Guo J, Amal R. Materials Advances in Photocatalytic Solar Hydrogen Production: Integrating Systems and Economics for a Sustainable Future. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2024:e2404618. [PMID: 38853427 DOI: 10.1002/adma.202404618] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/30/2024] [Revised: 06/03/2024] [Indexed: 06/11/2024]
Abstract
Photocatalytic solar hydrogen generation, encompassing both overall water splitting and organic reforming, presents a promising avenue for green hydrogen production. This technology holds the potential for reduced capital costs in comparison to competing methods like photovoltaic-electrocatalysis and photoelectrocatalysis, owing to its simplicity and fewer auxiliary components. However, the current solar-to-hydrogen efficiency of photocatalytic solar hydrogen production has predominantly remained low at ≈1-2% or lower, mainly due to curtailed access to the entire solar spectrum, thus impeding practical application of photocatalytic solar hydrogen production. This review offers an integrated, multidisciplinary perspective on photocatalytic solar hydrogen production. Specifically, the review presents the existing approaches in photocatalyst and system designs aimed at significantly boosting the solar-to-hydrogen efficiency, while also considering factors of cost and scalability of each approach. In-depth discussions extending beyond the efficacy of material and system design strategies are particularly vital to identify potential hurdles in translating photocatalysis research to large-scale applications. Ultimately, this review aims to provide understanding and perspective of feasible pathways for commercializing photocatalytic solar hydrogen production technology, considering both engineering and economic standpoints.
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Affiliation(s)
- Denny Gunawan
- School of Chemical Engineering, The University of New South Wales, Sydney, NSW, 2052, Australia
| | - Jiajun Zhang
- School of Chemical Engineering, The University of New South Wales, Sydney, NSW, 2052, Australia
| | - Qiyuan Li
- School of Chemical Engineering, The University of New South Wales, Sydney, NSW, 2052, Australia
| | - Cui Ying Toe
- School of Chemical Engineering, The University of New South Wales, Sydney, NSW, 2052, Australia
- School of Engineering, The University of Newcastle, Callaghan, NSW, 2308, Australia
| | - Jason Scott
- School of Chemical Engineering, The University of New South Wales, Sydney, NSW, 2052, Australia
| | - Markus Antonietti
- Department of Colloid Chemistry, Max Planck Institute of Colloids and Interfaces, 14475, Potsdam, Germany
| | - Jinghua Guo
- Advanced Light Source, Lawrence Berkeley National Laboratory, Berkeley, CA, 94720, USA
| | - Rose Amal
- School of Chemical Engineering, The University of New South Wales, Sydney, NSW, 2052, Australia
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6
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Ji X, Zhang J, Zhang G, Li N, Wang R, Lin H, Duan X. Dual interfacing with metallic cobalt boosts the electron shuttle of CdS-carbide nanoassemblies. J Colloid Interface Sci 2024; 660:810-822. [PMID: 38277838 DOI: 10.1016/j.jcis.2024.01.142] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2023] [Revised: 01/07/2024] [Accepted: 01/21/2024] [Indexed: 01/28/2024]
Abstract
Harnessing accelerated interfacial redox, thus boosting charge separation, is of great importance in photocatalytic solar hydrogen generation. In effect, nanoassembling non-noble metallic phases in CdS-based systems and elucidating their role in photocatalysis hold the key to eventually boosting electron shuttle in the field. Here we combine an efficient in-situ exsoluted metallic Co0 nanoparticles on a carbides matrix (CMG) with CdS (CdS@CoCMG) for photogeneration of hydrogen. The metallic cobalt phase exhibits strong binding at the CdS-carbide dual interfaces, forming the accelerated "electron converter" mechanism validated by charge transfer kinetics and achieving two orders of magnitude faster hydrogen production (44.42 mmol g-1 h-1) relative to CdS (0.43 mmol g-1 h-1). We propose that the unique catalyst configuration enable the directional electron-relay photocatalysis via harnessing interfaces between Co0 phase, carbides, and CdS clusters, which eventually boosts the redox process and charge separation of the integrated system, leading to high H2 production rates in the suspension.
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Affiliation(s)
- Xujing Ji
- School of Chemistry and Chemical Engineering, North University of China, Taiyuan 030051, China
| | - Jiayang Zhang
- School of Chemistry and Chemical Engineering, North University of China, Taiyuan 030051, China
| | - Guoqing Zhang
- School of Chemistry and Chemical Engineering, North University of China, Taiyuan 030051, China
| | - Na Li
- School of Chemistry and Chemical Engineering, North University of China, Taiyuan 030051, China
| | - Ruixin Wang
- School of Chemistry and Chemical Engineering, North University of China, Taiyuan 030051, China.
| | - Haiqiang Lin
- Department of Chemistry, College of Chemistry and Chemical Engineering, National Engineering Laboratory for Green Chemical Productions of Alcohols, Ethers and Esters, Xiamen University, Xiamen 361005, China
| | - Xinping Duan
- Department of Chemistry, College of Chemistry and Chemical Engineering, National Engineering Laboratory for Green Chemical Productions of Alcohols, Ethers and Esters, Xiamen University, Xiamen 361005, China.
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7
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Chen Z, Zhang Y, Zhao C, Xia Y, Li Z, Zhou X, Xiao L, Liu X, Zhang Y. Tailoring Graphite into Subnanometer Graphene. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2024; 36:e2310022. [PMID: 38088447 DOI: 10.1002/adma.202310022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/27/2023] [Revised: 12/01/2023] [Indexed: 01/13/2024]
Abstract
Within the intersection of materials science and nanoscience/technology, extremely downsized (including quantum-sized and subnanometer-sized) materials attract increasing interest. However, the effective and controllable production of extremely downsized materials through physical strategies remains a great challenge. Herein, an all-physical top-down method for the production of sub-1 nm graphene with completely broken lattice is reported. The graphene subnanometer materials (GSNs) with monolayer structures and lateral sizes of ≈0.5 nm are obtained. Compared with their bulk, nanosheets, and quantum sheets, the intrinsic GSNs present extremely enhanced photoluminescence and nonlinear saturation absorption performances, as well as unique carrier behavior. The non-equilibrium states induced by the entirely exposed and broken, intrinsic lattices in sub-1 nm graphene can be determinative to their extreme performances. This work shows the great potential of broken lattice and provides new insights toward subnanometer materials.
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Affiliation(s)
- Zhexue Chen
- CAS Key Laboratory of Nanosystem and Hierarchical Fabrication, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Beijing, 100190, P. R. China
- University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Yutong Zhang
- University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
- CAS Key Laboratory of Standardization and Measurement for Nanotechnology, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Beijing, 100190, P. R. China
| | - Ce Zhao
- CAS Key Laboratory of Nanosystem and Hierarchical Fabrication, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Beijing, 100190, P. R. China
- University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Yuexing Xia
- University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
- CAS Key Laboratory of Standardization and Measurement for Nanotechnology, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Beijing, 100190, P. R. China
| | - Zhangqiang Li
- CAS Key Laboratory of Nanosystem and Hierarchical Fabrication, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Beijing, 100190, P. R. China
- University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Xuanping Zhou
- CAS Key Laboratory of Nanosystem and Hierarchical Fabrication, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Beijing, 100190, P. R. China
- University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Liuyang Xiao
- CAS Key Laboratory of Nanosystem and Hierarchical Fabrication, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Beijing, 100190, P. R. China
- University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Xinfeng Liu
- University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
- CAS Key Laboratory of Standardization and Measurement for Nanotechnology, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Beijing, 100190, P. R. China
| | - Yong Zhang
- CAS Key Laboratory of Nanosystem and Hierarchical Fabrication, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Beijing, 100190, P. R. China
- University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
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8
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Gupta S, Kumar R. Enhanced photocatalytic performance of the N-rGO/g-C 3N 4 nanocomposite for efficient solar-driven water remediation. NANOSCALE 2024; 16:6109-6131. [PMID: 38444302 DOI: 10.1039/d3nr06203a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/07/2024]
Abstract
This paper describes the synthesis and analysis of a photocatalyst made from a combination of reduced graphene oxide (rGO) and graphitic carbon nitride (g-C3N4) through a simple hydrothermal process. The effectiveness of the N-rGO/g-C3N4 heterostructure in photocatalysis was examined by studying the breakdown of different types of organic pollutants, such as cationic and anionic dyes, as well as antibiotics, under simulated solar light irradiation. Due to the presence of Schottky junctions formed between rGO and g-C3N4, the electron transfer process is significantly enhanced, leading to a reduction in the recombination of photogenerated electrons and holes. As a result, the photocatalytic activity of the rGO/g-C3N4 photocatalyst is significantly higher compared to that of g-C3N4 alone. The photocatalytic performance was further augmented through the nitrogen doping of rGO, which led to an increase in conductivity due to electron doping and an enhancement in the charge separation process. The heterojunction of rGO/g-C3N4 with an optimum concentration of 60% rGO attained a degradation efficiency of 98.7% for rhodamine B (RhB) dye after 50 minutes of light irradiation. In comparison, the nitrogen-doped photocatalyst (N-rGO/g-C3N4) achieved a photodegradation efficiency of 99.99% within 30 minutes. The reaction rate constant of the N-rGO/g-C3N4 nanocomposite was found to be 0.11 min-1 using pseudo first-order rate kinetics. This value is about 16 times more than that of pure g-C3N4 (0.007 min-1) for the degradation of rhodamine B. Additionally, N-rGO/g-C3N4 effectively degraded various contaminants, such as methylene blue, methyl orange, and tetracycline hydrochloride. The paper also addresses the photocatalytic mechanism, which entails the facilitated movement of electrons and holes produced by light, owing to the alignment of energy bands at the interface of the N-rGO/g-C3N4 heterojunction. These findings contribute to the advancement of a metal-free and porous photocatalyst that is highly interconnected and can be used for waste water treatment and environmental remediation.
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Affiliation(s)
- Shalu Gupta
- Department of Physics and Astrophysics, Central University of Haryana, Mahendergarh-123031, India.
| | - Rakesh Kumar
- Department of Physics and Astrophysics, Central University of Haryana, Mahendergarh-123031, India.
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9
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Yang Z, Chen YW, Jin YF, Jin Z, Xie HS, Cong XS, Teng DG. Ni, Co-Embedded MOF-Derived N-Doped Bimetallic Porous Carbon for Adsorption-Photocatalytic Degradation of Organic Dyes and Antibiotics. ACS OMEGA 2024; 9:11356-11365. [PMID: 38496926 PMCID: PMC10938419 DOI: 10.1021/acsomega.3c07420] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/26/2023] [Revised: 12/13/2023] [Accepted: 12/14/2023] [Indexed: 03/19/2024]
Abstract
An efficient protocol for photocatalytic degradation of organic dyes and antibiotics has been successfully established via MOF-derived (MOF = metal-organic framework) Ni, Co-embedded N-doped bimetallic porous carbon nanocomposites (NiCo/NC). Such a NiCo/NC nanocomposite features well-distributed structures, suitable specific surface areas, and more active sites determined by various characterization analyses. The catalyst exhibits higher photocatalytic performance and stability toward the liquid-phase degradation of methylene blue (MB) under visible light irradiation for 60 min, after the adsorption-desorption equilibrium and the thorough degradation into H2O and CO2. Radical quenching experiments further confirmed the dominant effect of electron holes h+ and superoxide radical anions ·O2- for the MB photodegradation process. NiCo/NC was also appropriate for the degradation of Rhodamine B, methyl orange, tetracycline hydrochloride, and norfloxacin. Moreover, NiCo/NC is robust, and its photocatalytic activity is basically maintained after 8 cycles. This work is expected to provide additional information for the design of MOF-derived carbon material with more excellent properties and lay the foundation for further industrial applications.
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Affiliation(s)
- Zheng Yang
- School
of Architectural Intelligence, Jiangsu Vocational
Institute of Architectural Technology, Xuzhou 221116, P. R. China
- Jiangsu
Collaborative Innovation Center for Building Energy Saving and Construct
Technology, Xuzhou 221116, P. R. China
- Jiangsu
Engineering Laboratory of Biomass Resources Comprehensive Utilization, Jiangsu Vocational Institute of Architectural Technology, Xuzhou 221116, P. R. China
- College
of Chemical Engineering, Zaozhuang University, Zaozhuang 277160, P. R. China
| | - Yi-Wu Chen
- School
of Architectural Intelligence, Jiangsu Vocational
Institute of Architectural Technology, Xuzhou 221116, P. R. China
| | - Yu-Fei Jin
- School
of Architectural Intelligence, Jiangsu Vocational
Institute of Architectural Technology, Xuzhou 221116, P. R. China
| | - Zheng Jin
- School
of Architectural Intelligence, Jiangsu Vocational
Institute of Architectural Technology, Xuzhou 221116, P. R. China
| | - Heng-Shen Xie
- Jiangsu
Engineering Laboratory of Biomass Resources Comprehensive Utilization, Jiangsu Vocational Institute of Architectural Technology, Xuzhou 221116, P. R. China
| | - Xing-Shun Cong
- College
of Chemical Engineering, Zaozhuang University, Zaozhuang 277160, P. R. China
| | - Dao-Guang Teng
- School
of Chemical Engineering, Zhengzhou University, Zhengzhou 450001, P. R. China
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10
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Jiang X, Tan J, Liu D, Feng Y, Chen KQ, Long R, Vasenko AS. Improved Carrier Separation and Recombination by Ferroelectric Polarization in the CuBiP 2Se 6/C 2N Heterostructure: A Nonadiabatic Molecular Dynamics Study. J Phys Chem Lett 2024:2867-2875. [PMID: 38446846 DOI: 10.1021/acs.jpclett.4c00404] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/08/2024]
Abstract
The rapid recombination of photogenerated carriers heavily restricts the photocatalytic efficiency. Here, we propose a new strategy to improve catalytic efficiency based on the ferroelectric van der Waals heterostructure (CuBiP2Se6/C2N). Combining density functional theory and the nonadiabatic molecular dynamics (NAMD) method, we have systematically analyzed the ground-state properties and carrier dynamics images in the CuBiP2Se6/C2N heterostructure. Our calculations showed that the ferroelectric polarization of CuBiP2Se6 provides the internal driving force for the photogenerated carriers separation. NAMD results demonstrate that the excited-state carrier transfer and recombination processes in the CuBiP2Se6/C2N are consistent with a type II mechanism. Meanwhile, constructing the ferroelectric heterostructure can effectively prolong the carrier lifetime, from ∼65.98 to ∼124.54 ps. Moreover, the high quantum efficiency and tunable band edge positions mean that the CuBiP2Se6/C2N heterostructure is an excellent potential candidate material for photocatalytic water splitting.
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Affiliation(s)
- Xingxing Jiang
- College of Physics and Electronics Engineering, Hengyang Normal University, Hengyang 421002, China
- HSE University, 101000 Moscow, Russia
| | - Jieyao Tan
- College of Physics and Electronics Engineering, Hengyang Normal University, Hengyang 421002, China
| | | | - Yexin Feng
- Department of Applied Physics, School of Physics and Electronics, Hunan University, Changsha 410082, China
| | - Ke-Qiu Chen
- Department of Applied Physics, School of Physics and Electronics, Hunan University, Changsha 410082, China
| | - Run Long
- Key Laboratory of Theoretical & Computational Photochemistry of Ministry of Education, College of Chemistry, Beijing Normal University, Beijing 100875, China
| | - Andrey S Vasenko
- HSE University, 101000 Moscow, Russia
- Donostia International Physics Center (DIPC), 20018 San Sebastián-Donostia, Euskadi, Spain
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11
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Guo J, Fan Y, Dong X, Zeng H, Ma X, Fu Y. Study on preparation of UV-CDs/Zeolite-4A/TiO 2 composite photocatalyst coupled with ultraviolet-irradiation and their application of photocatalytic degradation of dyes. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2024; 354:120342. [PMID: 38382431 DOI: 10.1016/j.jenvman.2024.120342] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/11/2023] [Revised: 01/11/2024] [Accepted: 02/08/2024] [Indexed: 02/23/2024]
Abstract
In this work, ultraviolet irradiation was employed to assist in the preparation of a novel photocatalyst composite in the form of carbon dots/zeolite-4A/TiO2, using coal tailings as the source of silicon-aluminum and carbon. The composite was designed for the degradation of methylene blue under 500 W of UV light irradiation. Zeolite-4A was used as a support for the well-dispersed carbon dots and TiO2 nanoparticles. The as-prepared composites were subjected to thorough characterization, confirming the successful formation of zeolite-4A with a cube structure, along with the loading of TiO2 and coal-based CDs in the composites. The experimental results demonstrated that the UV-CZTs nanocomposites exhibited a remarkable removal efficiency of 90.63% within 90 min for MB. The corresponding rate constant was exceptionally high at 0.0331 min-1, surpassing that of the Dark-CZTs and pure TiO2. This significant enhancement was possibly due to the synergistic effect of adsorption photocatalysis of the UV-CZTs, combined with the excellent electron-accepting capabilities of the coal-based CDs, which led to highly improved charge separation. An investigation of the spent photocatalyst's recyclability revealed that it retained a remarkable 82.94% MB removal efficiency after five consecutive cycles, signifying the stability of the composite. Trapping experiments also elucidated the primary reactive species responsible for MB degradation, which were identified as photo-generated holes and ⸱O2- species. By this process, the hydroxyl radicals generated in the system successfully promoted the transformation of coal tailings to coal-based zeolite and coal-based CDs. Coal-based zeolite served as an excellent carrier of titanium dioxide, which improved its dispersibility. The inhibition of e--h+ recombination of titanium dioxide by introducing coal-based CDs improved the photocatalytic ability of titanium dioxide. Through this study, coal tailings, as a coal processing waste, were transformed into high-value materials, and relevant photocatalytic composite materials could be prepared with broad application prospects.
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Affiliation(s)
- Jiaqi Guo
- College of Mining Engineering, Taiyuan University of Technology, Taiyuan, 030024, Shanxi, China; Department of Chemical and Materials Engineering, University of Alberta, Edmonton, AB, T6G 1H9, Canada
| | - Yuping Fan
- College of Mining Engineering, Taiyuan University of Technology, Taiyuan, 030024, Shanxi, China
| | - Xianshu Dong
- College of Mining Engineering, Taiyuan University of Technology, Taiyuan, 030024, Shanxi, China.
| | - Hongbo Zeng
- Department of Chemical and Materials Engineering, University of Alberta, Edmonton, AB, T6G 1H9, Canada.
| | - Xiaomin Ma
- College of Mining Engineering, Taiyuan University of Technology, Taiyuan, 030024, Shanxi, China
| | - Yuanpeng Fu
- College of Mining Engineering, Taiyuan University of Technology, Taiyuan, 030024, Shanxi, China
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12
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Lv H, Yao Y, Yuan M, Chen G, Wang Y, Rao L, Li S, Kara UI, Dupont RL, Zhang C, Chen B, Liu B, Zhou X, Wu R, Adera S, Che R, Zhang X, Wang X. Functional nanoporous graphene superlattice. Nat Commun 2024; 15:1295. [PMID: 38346953 PMCID: PMC10861524 DOI: 10.1038/s41467-024-45503-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2023] [Accepted: 01/26/2024] [Indexed: 02/15/2024] Open
Abstract
Two-dimensional (2D) superlattices, formed by stacking sublattices of 2D materials, have emerged as a powerful platform for tailoring and enhancing material properties beyond their intrinsic characteristics. However, conventional synthesis methods are limited to pristine 2D material sublattices, posing a significant practical challenge when it comes to stacking chemically modified sublattices. Here we report a chemical synthesis method that overcomes this challenge by creating a unique 2D graphene superlattice, stacking graphene sublattices with monodisperse, nanometer-sized, square-shaped pores and strategically doped elements at the pore edges. The resulting graphene superlattice exhibits remarkable correlations between quantum phases at both the electron and phonon levels, leading to diverse functionalities, such as electromagnetic shielding, energy harvesting, optoelectronics, and thermoelectrics. Overall, our findings not only provide chemical design principles for synthesizing and understanding functional 2D superlattices but also expand their enhanced functionality and extensive application potential compared to their pristine counterparts.
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Affiliation(s)
- Hualiang Lv
- William G. Lowrie Department of Chemical and Biomolecular Engineering, The Ohio State University, Columbus, OH, 43210, USA
- Institution of Optoelectronic, Laboratory of Advanced Materials, Academy for Engineering & Technology, Department of Materials Science, Fudan University, Shanghai, 200438, P. R. China
| | - Yuxing Yao
- Department of Chemistry and Chemical Biology, Harvard University, Cambridge, MA, 02138, USA
- Division of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, CA, 91125, USA
| | - Mingyue Yuan
- Institution of Optoelectronic, Laboratory of Advanced Materials, Academy for Engineering & Technology, Department of Materials Science, Fudan University, Shanghai, 200438, P. R. China
| | - Guanyu Chen
- Institution of Optoelectronic, Laboratory of Advanced Materials, Academy for Engineering & Technology, Department of Materials Science, Fudan University, Shanghai, 200438, P. R. China
| | - Yuchao Wang
- Institution of Optoelectronic, Laboratory of Advanced Materials, Academy for Engineering & Technology, Department of Materials Science, Fudan University, Shanghai, 200438, P. R. China
- Key Laboratory of Materials for High-Power Laser, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai, 201800, P. R. China
| | - Longjun Rao
- Institution of Optoelectronic, Laboratory of Advanced Materials, Academy for Engineering & Technology, Department of Materials Science, Fudan University, Shanghai, 200438, P. R. China
| | - Shucong Li
- Department of Chemistry and Chemical Biology, Harvard University, Cambridge, MA, 02138, USA
- School of Engineering, Massachusetts Institute of Technology, Cambridge, MA, 02139, USA
| | - Ufuoma I Kara
- William G. Lowrie Department of Chemical and Biomolecular Engineering, The Ohio State University, Columbus, OH, 43210, USA
| | - Robert L Dupont
- William G. Lowrie Department of Chemical and Biomolecular Engineering, The Ohio State University, Columbus, OH, 43210, USA
| | - Cheng Zhang
- Key Laboratory of Materials for High-Power Laser, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai, 201800, P. R. China.
| | - Boyuan Chen
- William G. Lowrie Department of Chemical and Biomolecular Engineering, The Ohio State University, Columbus, OH, 43210, USA
| | - Bo Liu
- College of Mechanical and Vehicle Engineering, Hunan University, Changsha, 410082, P. R. China
| | - Xiaodi Zhou
- William G. Lowrie Department of Chemical and Biomolecular Engineering, The Ohio State University, Columbus, OH, 43210, USA
| | - Renbing Wu
- Institution of Optoelectronic, Laboratory of Advanced Materials, Academy for Engineering & Technology, Department of Materials Science, Fudan University, Shanghai, 200438, P. R. China.
| | - Solomon Adera
- Department of Mechanical Engineering, University of Michigan, Ann Arbor, MI, 48109, USA
| | - Renchao Che
- Institution of Optoelectronic, Laboratory of Advanced Materials, Academy for Engineering & Technology, Department of Materials Science, Fudan University, Shanghai, 200438, P. R. China.
| | - Xingcai Zhang
- School of Engineering and Applied Sciences, Harvard University, Cambridge, MA, 02138, USA.
| | - Xiaoguang Wang
- William G. Lowrie Department of Chemical and Biomolecular Engineering, The Ohio State University, Columbus, OH, 43210, USA.
- School of Engineering and Applied Sciences, Harvard University, Cambridge, MA, 02138, USA.
- Sustainability Institute, The Ohio State University, Columbus, OH, 43210, USA.
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13
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Wang F, Jiang L, Zhang G, Ye Z, He Q, Li J, Li P, Chen Y, Zhou X, Shang R. Novel Ag-Bridged Z-Scheme CdS/Ag/Bi 2WO 6 Heterojunction: Excellent Photocatalytic Performance and Insight into the Underlying Mechanism. NANOMATERIALS (BASEL, SWITZERLAND) 2024; 14:315. [PMID: 38334586 PMCID: PMC10857298 DOI: 10.3390/nano14030315] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/30/2023] [Revised: 01/30/2024] [Accepted: 02/02/2024] [Indexed: 02/10/2024]
Abstract
The construction of semiconductor heterojunction photocatalysts that improve the separation and transfer of photoinduced charge carriers is an effective and widely employed strategy to boost photocatalytic performance. Herein, we have successfully constructed a CdS/Ag/Bi2WO6 Z-scheme heterojunction with an Ag-bridge as an effective charge transfer channel by a facile process. The heterostructure consists of both CdS and Ag nanoparticles anchored on the surface of Bi2WO6 nanosheets. The photocatalytic efficiency of the CdS/Ag/Bi2WO6 system was studied by the decontamination of tetracycline (TC) and Rhodamine B (RhB) under visible light irradiation (λ ≥ 420). The results exhibited that CdS/Ag/Bi2WO6 shows markedly higher photocatalytic performance than that of CdS, Bi2WO6, Ag/Bi2WO6, and CdS/Bi2WO6. The trapping experiment results verified that the •O2- and h+ radicals are the key active species. The results of photoluminescence spectral analysis and photocurrent responses indicated that the CdS/Ag/Bi2WO6 heterojunctions exhibit exceptional efficiency in separating and transferring photoinduced electron-hole pairs. Based on a series of characterization results, the boosted photocatalytic activity of the CdS/Ag/Bi2WO6 system is mostly due to the successful formation of the Ag-bridged Z-scheme heterojunction; these can not only inhibit the recombination rate of photoinduced charge carriers but also possess a splendid redox capacity. The work provides a way for designing a Z-scheme photocatalytic system based on Ag-bridged for boosting photocatalytic performance.
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Affiliation(s)
- Fangzhi Wang
- School of Resources and Environmental Engineering, Shandong Agriculture and Engineering University, Jinan 250100, China; (L.J.); (G.Z.); (Z.Y.); (Q.H.); (J.L.); (P.L.); (Y.C.); (X.Z.); (R.S.)
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14
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Moors M, Werner I, Bauer J, Lorenz J, Monakhov KY. Multistate switching of scanning tunnelling microscopy machined polyoxovanadate-dysprosium-phthalocyanine nanopatterns on graphite. NANOSCALE HORIZONS 2024; 9:233-237. [PMID: 38115762 DOI: 10.1039/d3nh00345k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/21/2023]
Abstract
We demonstrate the first formation of stable, multistate switchable monolayers of polyoxometalates (POMs), which can be electronically triggered to higher charged states with increased conductance in the current-voltage profile at room temperature. These responsive two-dimensional monolayers are based on a fully oxidised dodecavanadate cage (POV12) equipped with Dy(III)-doped phthalocyanine (Pc) macrocycles adopting the face-on orientation on highly oriented pyrolytic graphite (HOPG). The layers can be lithographically processed by the tip of a scanning tunnelling microscope (STM) to machine patterns with diameters ranging from 30 to 150 nm2.
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Affiliation(s)
- Marco Moors
- Leibniz Institute of Surface Engineering (IOM), Permoserstraße 15, Leipzig 04318, Germany.
| | - Irina Werner
- Leibniz Institute of Surface Engineering (IOM), Permoserstraße 15, Leipzig 04318, Germany.
| | - Jens Bauer
- Leibniz Institute of Surface Engineering (IOM), Permoserstraße 15, Leipzig 04318, Germany.
| | - Jonas Lorenz
- Leibniz Institute of Surface Engineering (IOM), Permoserstraße 15, Leipzig 04318, Germany.
| | - Kirill Yu Monakhov
- Leibniz Institute of Surface Engineering (IOM), Permoserstraße 15, Leipzig 04318, Germany.
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15
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Luo Y, He Y, Ding Y, Zuo L, Zhong C, Ma Y, Sun M. Defective Biphenylene as High-Efficiency Hydrogen Evolution Catalysts. Inorg Chem 2024; 63:1136-1141. [PMID: 38160412 DOI: 10.1021/acs.inorgchem.3c03503] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2024]
Abstract
Electrocatalysts play a pivotal role in advancing the application of water splitting for hydrogen production. This research unveils the potential of defective biphenylenes as high-efficiency catalysts for the hydrogen evolution reaction. Using first-principles simulations, we systematically investigated the structure, stability, and catalytic performance of defective biphenylenes. Our findings unveil that defect engineering significantly enhances the electrocatalytic activity for hydrogen evolution. Specifically, biphenylene with a double-vacancy defect exhibits an outstanding Gibbs free energy of -0.08 eV, surpassing that of Pt, accompanied by a remarkable exchange current density of -3.08 A cm-2, also surpassing that of Pt. Furthermore, we find the preference for the Volmer-Heyrovsky mechanism in the hydrogen evolution reaction, with a low energy barrier of 0.80 eV. This research provides a promising avenue for developing novel metal-free electrocatalysts for water splitting with earth-abundant carbon elements, making a significant step toward sustainable hydrogen production.
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Affiliation(s)
- Yi Luo
- School of Mechanical Engineering, Jiangsu Ocean University, Lianyungang 222005, China
- Jiangsu Key Laboratory of Function Control Technology for Advanced Materials, Jiangsu Ocean University, Lianyungang 222005, China
| | - Yiqiang He
- School of Mechanical Engineering, Jiangsu Ocean University, Lianyungang 222005, China
| | - Yunfei Ding
- School of Mechanical Engineering, Jiangsu Ocean University, Lianyungang 222005, China
| | - Lijie Zuo
- School of Mechanical Engineering, Jiangsu Ocean University, Lianyungang 222005, China
| | - Chengyong Zhong
- College of Physics and Electronic Engineering, Chongqing Normal University, Chongqing 401331, China
| | - Yinchang Ma
- Physical Sciences and Engineering Division (PSE), King Abdullah University of Science and Technology (KAUST), Thuwal 23955-6900, Saudi Arabia
| | - Minglei Sun
- Department of Physics and NANOlab Center of Excellence, University of Antwerp, Antwerp 2020, Belgium
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16
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Malenfant-Thuot O, Morinière M, Côté M. Ab initiostudy of the processes of nitrogen functionalisation in graphene. NANOTECHNOLOGY 2024; 35:135702. [PMID: 38134442 DOI: 10.1088/1361-6528/ad1840] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/16/2023] [Accepted: 12/22/2023] [Indexed: 12/24/2023]
Abstract
Nitrogen functionalisation of graphene is studied with the help ofab initioelectronic structure methods. Both static formation energies and energy barriers obtained from nudged elastic band calculations are considered. If carbon defects are present in the graphene structure, low energy barriers on the order of 0.5 eV were obtained to incorporate nitrogen atoms inside the sheet. For defect-free graphene, much larger barriers in the range of 3.70-4.38 eV were found, suggesting an external energy source is required to complete this type of incorporation.
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Affiliation(s)
- Olivier Malenfant-Thuot
- Département de Physique and Regroupement Québécois sur les Matériaux de Pointe, Université de Montréal, C. P. 6128, Succursale Centre-Ville, Montréal, Québec, H3C 3J7, Canada
| | - Maxime Morinière
- Département de Physique and Regroupement Québécois sur les Matériaux de Pointe, Université de Montréal, C. P. 6128, Succursale Centre-Ville, Montréal, Québec, H3C 3J7, Canada
| | - Michel Côté
- Département de Physique and Regroupement Québécois sur les Matériaux de Pointe, Université de Montréal, C. P. 6128, Succursale Centre-Ville, Montréal, Québec, H3C 3J7, Canada
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17
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Kammoun H, Ossonon BD, Tavares AC. Nitrogen-Doped Graphene Materials with High Electrical Conductivity Produced by Electrochemical Exfoliation of Graphite Foil. NANOMATERIALS (BASEL, SWITZERLAND) 2024; 14:123. [PMID: 38202578 PMCID: PMC10780345 DOI: 10.3390/nano14010123] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/27/2023] [Revised: 12/19/2023] [Accepted: 12/23/2023] [Indexed: 01/12/2024]
Abstract
Nitrogen-doped graphene-based materials are of utmost importance in sensing and energy conversion devices due to their unique physicochemical properties. However, the presence of defects such as pyrrolic nitrogen and oxygenated functional groups reduces their electrical conductivity. Herein, a two-step approach based on the electrochemical exfoliation of graphite foils in aqueous mixed electrolytes followed by thermal reduction at 900 °C is used to prepare high-quality few layers of N-doped graphene-based materials. The exfoliations were conducted in 0.1 M (NH4)2SO4 or H2SO4 and HNO3 (5 mM or 0.1 M) electrolytes mixtures and the HNO3 vol% varied. Chemical analysis demonstrated that the as-prepared graphene oxides contain nitro and amine groups. Thermal reduction is needed for substitutional N-doping. Nitrogen and oxygen surface concentrations vary between 0.23-0.96% and 3-8%, respectively. Exfoliation in (NH4)2SO4 and/or 5 mM HNO3 favors the formation of pyridinic-N (10-40% of the total N), whereas 1 M HNO3 favors the formation of graphitic-N (≈60%). The electrical conductivity ranges between 166-2705 Scm-1. Raman spectroscopy revealed a low density of defects (ID/IG ratio between 0.1 and 0.7) and that most samples are composed of mono-to-bilayer graphene-based materials (IG/I2D integrated intensities ratio). Structural and compositional stability of selected samples after storage in air for three months is demonstrated. These results confirm the high quality of the synthesized undoped and N-doped graphene-type materials.
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Affiliation(s)
| | | | - Ana C. Tavares
- Centre Énergie Matériaux Télécommunications, Institut National de la Recherche Scientifique, 1650 Boulevard Lionel-Boulet, Varennes, QC J3X 1P7, Canada; (H.K.); (B.D.O.)
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18
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Yoo J, Lee J, Kim J. A floating photocatalytic fabric integrated with a AgI/UiO-66-NH 2 heterojunction as a facile strategy for wastewater treatment. RSC Adv 2024; 14:1794-1802. [PMID: 38192319 PMCID: PMC10772545 DOI: 10.1039/d3ra07534f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2023] [Accepted: 12/12/2023] [Indexed: 01/10/2024] Open
Abstract
With an increased need of wastewater treatment, application of photocatalysts has drawn growing research attention as an advanced water remediation strategy. Herein, a floating photocatalytic fabric in a woven construction was developed for removal of Rhodamine B (RhB) in water. For an efficient photocatalytic reaction, AgI nanoparticles were grown on the surface of UiO-66-NH2 crystals in a layered structure, forming a heterojunction system on a cotton yarn, and this was woven with polypropylene yarn. The floating photocatalyst demonstrated the maximized light utilization and adequate contact with contaminated water. Through the heterojunction system, the electrons and holes were effectively separated to generate reactive chemical species, and this eventually led to an enhanced photocatalytic performance of AgI/UiO@fabric reaching 98% removal efficiency after 2 hours of irradiation. Photodegradation of RhB occurred mainly by superoxide radicals and holes, which were responsible for de-ethylation and decomposition of an aromatic ring, respectively. The kinetics of the photocatalytic reaction suggested that circulation of solution by stirring affected the photocatalytic removal rate. The recycle test demonstrated the potential long-term applicability of the developed material with structural integrity and catalytic stability. This study highlights the proof-of-concept of a floating photocatalytic material for facile and effective water remediation with repeated usability.
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Affiliation(s)
- Jaeseon Yoo
- Department of Fashion and Textiles, Seoul National University Seoul 08826 Republic of Korea
| | - Jinwook Lee
- Department of Fashion and Textiles, Seoul National University Seoul 08826 Republic of Korea
| | - Jooyoun Kim
- Department of Fashion and Textiles, Seoul National University Seoul 08826 Republic of Korea
- Research Institute of Human Ecology, Seoul National University Seoul 08826 Republic of Korea
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19
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Liu Y, Dai X, Li J, Cheng S, Zhang J, Ma Y. Recent progress in TiO 2-biochar-based photocatalysts for water contaminants treatment: strategies to improve photocatalytic performance. RSC Adv 2024; 14:478-491. [PMID: 38173568 PMCID: PMC10759041 DOI: 10.1039/d3ra06910a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2023] [Accepted: 12/11/2023] [Indexed: 01/05/2024] Open
Abstract
Toxic organic pollutants in wastewater have seriously damaged human health and ecosystems. Photocatalytic degradation is a potential and efficient tactic for wastewater treatment. Among the entire carbon family, biochar has been developed for the adsorption of pollutants due to its large specific surface area, porous skeleton structure, and abundant surface functional groups. Hence, combining adsorption and photocatalytic decomposition, TiO2-biochar photocatalysts have received considerable attention and have been extensively studied. Owing to biochar's adsorption, more active sites and strong interactions between contaminants and photocatalysts can be achieved. The synergistic effect of biochar and TiO2 nanomaterials substantially improves the photocatalytic capacity for pollutant degradation. TiO2-biochar composites have numerous attractive properties and advantages, culminating in infinite applications. This review discusses the characteristics and preparation techniques of biochar, presents in situ and ex situ synthesis approaches of TiO2-biochar nanocomposites, explains the benefits of TiO2-biochar-based compounds for photocatalytic degradation, and emphasizes the strategies for enhancing the photocatalytic efficiency of TiO2-biochar-based photocatalysts. Finally, the main difficulties and future advancements of TiO2-biochar-based photocatalysis are highlighted. The review gives an exhaustive overview of recent progress in TiO2-biochar-based photocatalysts for organic contaminants removal and is expected to encourage the development of robust TiO2-biochar-based photocatalysts for sewage remediation and other environmentally friendly uses.
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Affiliation(s)
- Yunfang Liu
- School of Sciences, Beihua University Jilin 132013 China
| | - Xiaowei Dai
- Department of Reproductive Medicine Center, The Second Norman Bethune Hospital of Jilin University Changchun 130041 China
| | - Jia Li
- School of Sciences, Beihua University Jilin 132013 China
| | - Shaoheng Cheng
- State Key Laboratory of Superhard Materials, College of Physics, Jilin University Changchun 130012 China
| | - Jian Zhang
- School of Sciences, Beihua University Jilin 132013 China
| | - Yibo Ma
- School of Sciences, Beihua University Jilin 132013 China
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20
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Wang Y, Xing Z, Yang Y, Kong W, Wu C, Peng H, Li Z, Xie Y, Zhou W. Oxygen-Defective Bi 2MoO 6/g-C 3N 4 hollow tubulars S-scheme heterojunctions toward optimized photocatalytic performance. J Colloid Interface Sci 2024; 653:1566-1576. [PMID: 37806064 DOI: 10.1016/j.jcis.2023.09.152] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2023] [Revised: 09/22/2023] [Accepted: 09/24/2023] [Indexed: 10/10/2023]
Abstract
Novel S-scheme heterojunction photocatalysts of bismuth molybdate/hollow tube graphite carbon nitride (Bi2MoO6 SOVs/g-C3N4) containing surface defects (SOVs) were prepared by calcination and hydrothermal methods. The hollow tubular structure of g-C3N4 facilitates the enhancement of multiple reflection and scattering of light, and also have a larger range of specific surface areas and more reactive sites, which promotes carrier separation and thus improves photocatalytic performance. The introduction of SOVs to bismuth molybdate not only reduces the band gap of bismuth molybdate, but also promotes the separation of charges. The optimized Bi2MoO6 SOVs/TCN photocatalyst has a hydrogen production efficiency of 2.29 mmol h-1 g-1. It also shows high photocatalytic degradation property of tetracycline and bisphenol A in water, up to 97.3 % and 98.9 %, respectively. Meanwhile, the transfer mechanism of photogenerated charges in S-scheme heterojunctions can be verified by electron paramagnetic resonance and in situ irradiated x-ray photoelectron spectroscopy electron paramagnetic resonance, which accelerated the separation and transfer of photogenerated charge by energy band bending at the interface and internal electric field. This rational structural design strategy provides a new development idea for building high-performance S-scheme heterojunction photocatalysts.
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Affiliation(s)
- Yizhu Wang
- Department of Environmental Science, School of Chemistry and Materials Science, Key Laboratory of Functional Inorganic Material Chemistry, Ministry of Education of the People's Republic of China, Heilongjiang University, Harbin 150080, PR China
| | - Zipeng Xing
- Department of Environmental Science, School of Chemistry and Materials Science, Key Laboratory of Functional Inorganic Material Chemistry, Ministry of Education of the People's Republic of China, Heilongjiang University, Harbin 150080, PR China.
| | - Yi Yang
- Department of Environmental Science, School of Chemistry and Materials Science, Key Laboratory of Functional Inorganic Material Chemistry, Ministry of Education of the People's Republic of China, Heilongjiang University, Harbin 150080, PR China
| | - Weifeng Kong
- Department of Environmental Science, School of Chemistry and Materials Science, Key Laboratory of Functional Inorganic Material Chemistry, Ministry of Education of the People's Republic of China, Heilongjiang University, Harbin 150080, PR China
| | - Chunxu Wu
- Department of Environmental Science, School of Chemistry and Materials Science, Key Laboratory of Functional Inorganic Material Chemistry, Ministry of Education of the People's Republic of China, Heilongjiang University, Harbin 150080, PR China
| | - Hui Peng
- Department of Environmental Science, School of Chemistry and Materials Science, Key Laboratory of Functional Inorganic Material Chemistry, Ministry of Education of the People's Republic of China, Heilongjiang University, Harbin 150080, PR China
| | - Zhenzi Li
- Shandong Provincial Key Laboratory of Molecular Engineering, School of Chemistry and Chemical Engineering, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250353, PR China
| | - Ying Xie
- Department of Environmental Science, School of Chemistry and Materials Science, Key Laboratory of Functional Inorganic Material Chemistry, Ministry of Education of the People's Republic of China, Heilongjiang University, Harbin 150080, PR China.
| | - Wei Zhou
- Shandong Provincial Key Laboratory of Molecular Engineering, School of Chemistry and Chemical Engineering, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250353, PR China.
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21
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He B, Xiao P, Wan S, Zhang J, Chen T, Zhang L, Yu J. Rapid Charge Transfer Endowed by Interfacial Ni-O Bonding in S-scheme Heterojunction for Efficient Photocatalytic H 2 and Imine Production. Angew Chem Int Ed Engl 2023; 62:e202313172. [PMID: 37908153 DOI: 10.1002/anie.202313172] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2023] [Revised: 10/25/2023] [Accepted: 10/31/2023] [Indexed: 11/02/2023]
Abstract
Cooperative coupling of H2 evolution with oxidative organic synthesis is promising in avoiding the use of sacrificial agents and producing hydrogen energy with value-added chemicals simultaneously. Nonetheless, the photocatalytic activity is obstructed by sluggish electron-hole separation and limited redox potentials. Herein, Ni-doped Zn0.2 Cd0.8 S quantum dots are chosen after screening by DFT simulation to couple with TiO2 microspheres, forming a step-scheme heterojunction. The Ni-doped configuration tunes the highly active S site for augmented H2 evolution, and the interfacial Ni-O bonds provide fast channels at the atomic level to lower the energy barrier for charge transfer. Also, DFT calculations reveal an enhanced built-in electric field in the heterojunction for superior charge migration and separation. Kinetic analysis by femtosecond transient absorption spectra demonstrates that expedited charge migration with electrons first transfer to Ni2+ and then to S sites. Therefore, the designed catalyst delivers drastically elevated H2 yield (4.55 mmol g-1 h-1 ) and N-benzylidenebenzylamine production rate (3.35 mmol g-1 h-1 ). This work provides atomic-scale insights into the coordinated modulation of active sites and built-in electric fields in step-scheme heterojunction for ameliorative photocatalytic performance.
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Affiliation(s)
- Bowen He
- Laboratory of Solar Fuel, Faculty of Materials Science and Chemistry, China University of Geosciences, 68 Jincheng Street, Wuhan, 430078, P. R. China
| | - Peng Xiao
- Hefei National Laboratory for Physical Sciences at Microscale, CAS Key Laboratory of Materials for Energy Conversion, Department of Materials Science and Engineering, University of Science and Technology of China, Hefei, Anhui, 230026, China
| | - Sijie Wan
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, 122 Luoshi Road, Wuhan, 430070, P. R. China
| | - Jianjun Zhang
- Laboratory of Solar Fuel, Faculty of Materials Science and Chemistry, China University of Geosciences, 68 Jincheng Street, Wuhan, 430078, P. R. China
| | - Tao Chen
- Hefei National Laboratory for Physical Sciences at Microscale, CAS Key Laboratory of Materials for Energy Conversion, Department of Materials Science and Engineering, University of Science and Technology of China, Hefei, Anhui, 230026, China
| | - Liuyang Zhang
- Laboratory of Solar Fuel, Faculty of Materials Science and Chemistry, China University of Geosciences, 68 Jincheng Street, Wuhan, 430078, P. R. China
| | - Jiaguo Yu
- Laboratory of Solar Fuel, Faculty of Materials Science and Chemistry, China University of Geosciences, 68 Jincheng Street, Wuhan, 430078, P. R. China
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22
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He Z, Qian C, Chen D, Xu K, Hao W. Design of ultrathin CoAl-LDHs/ZnIn 2S 4 with strong interfacial bonding and rich oxygen vacancies for highly efficient hydrogen evolution activity. J Colloid Interface Sci 2023; 651:138-148. [PMID: 37542889 DOI: 10.1016/j.jcis.2023.07.179] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2023] [Revised: 07/25/2023] [Accepted: 07/28/2023] [Indexed: 08/07/2023]
Abstract
Designing a semiconductor-based heterostructure photocatalyst is very important way to enhance the hydrogen production activity. Here, a novel 2D/2D CoAl-LDHs/ZnIn2S4 S-scheme heterostructure with an ultrathin structure was synthesized by electrostatic attraction between CoAl-LDHs and ZnIn2S4 nanosheets. The presence of oxygen vacancies in the monolayer CoAl-LDHs nanosheet promotes the formation of Co-SX bonds, which serve as charge transfer channels at the interface of the CoAl-LDHs/ZnIn2S4 heterostructure. The ultrathin CoAl-LDHs/ZnIn2S4 exhibits broadened light absorption in the near-infrared range due to the occurrence of Co-SX chemical bonds. The CoAl-LDHs/ZnIn2S4 with a mass ratio of 1:2 demonstrated the highest photocatalytic hydrogen evolution activity (1563.64 μmol g-1 h-1) under the simulated sunlight, which is 4.6 and 9.7 times than that of the ZnIn2S4 and CoAl-LDHs/ZnIn2S4(bulk), respectively. The enhanced photocatalytic activity of ultrathin 2D/2D CoAl-LDHs/ZnIn2S4 should attributed to the shorter carriers path that benefit from the ultrathin structure and the quicker photogenerated charge transfer and the S-scheme migration pathway accelerated by the charge channel of Co-SX bonds. These new ideas should be inspiring for the design and construction of heterostructures for higher photocatalytic hydrogen evolution activity.
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Affiliation(s)
- Zetian He
- Beijing Key Laboratory of Materials Utilization of Nonmetallic Minerals and Solid Wastes, National Laboratory of Mineral Materials, School of Materials Science and Technology, China University of Geosciences, Xueyuan Road, Haidian District, Beijing 100083, China
| | - Che Qian
- Beijing Key Laboratory of Materials Utilization of Nonmetallic Minerals and Solid Wastes, National Laboratory of Mineral Materials, School of Materials Science and Technology, China University of Geosciences, Xueyuan Road, Haidian District, Beijing 100083, China
| | - Daimei Chen
- Beijing Key Laboratory of Materials Utilization of Nonmetallic Minerals and Solid Wastes, National Laboratory of Mineral Materials, School of Materials Science and Technology, China University of Geosciences, Xueyuan Road, Haidian District, Beijing 100083, China.
| | - Kang Xu
- College of Physics and Electronic Information, Dezhou University, Dezhou, China
| | - Weichang Hao
- School of Physics and BUAA-UOW Joint Research Centre, Beihang University, Beijing 100191, China
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23
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Zhou Z, Cheng H, Komarneni S, Ma J. MIL-101(Fe)/WS 2 composites activated Na 2S 2O 8 with visible light for removal of tetracycline. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:122393-122404. [PMID: 37968488 DOI: 10.1007/s11356-023-30914-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/08/2023] [Accepted: 11/01/2023] [Indexed: 11/17/2023]
Abstract
MIL-101(Fe)/WS2 catalyst was composited using a solvothermal method. To study the physical and chemical properties of the composite material, a series of characterizations such as scanning electron microscope (SEM), X-ray diffraction (XRD), and catalytic experiments were carried out. The photocatalysis of the prepared catalyst in the degradation of tetracycline was investigated using persulfate (PS, Na2S2O8) as a cocatalyst under visible light illumination. The above system can remove about 80% of tetracycline within 40 min. After three cyclic experiments, the material showed good recycling. According to material characterization and various experimental results, the enhanced performance of the material was attributed to the reduction of the recombination efficiency of photogenerated e- and h+, and activated persulfate to produce a large number of free radicals such as O2•-, SO4•- and 1O2 produced by the active sites provided by the catalyst's high specific surface area.
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Affiliation(s)
- Zhongwei Zhou
- School of Environmental Science and Engineering, Changzhou University, Jiangsu, 213164, China
| | - Hao Cheng
- Guangxi Key Laboratory of Green Processing of Sugar Resources, College of Biological and Chemical Engineering, Guangxi University of Science and Technology, Guangxi, 545006, China
| | - Sridhar Komarneni
- Department of Ecosystem Science and Management and Materials Research Institute, 204 Materials Research Laboratory, The Pennsylvania State University, University Park, PA, 16802, USA.
| | - Jianfeng Ma
- School of Environmental Science and Engineering, Changzhou University, Jiangsu, 213164, China
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24
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Guo S, Gao M, Zhang W, Liu F, Guo X, Zhou K. Recent Advances in Laser-Induced Synthesis of MOF Derivatives. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2023; 35:e2303065. [PMID: 37319033 DOI: 10.1002/adma.202303065] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/03/2023] [Revised: 06/01/2023] [Indexed: 06/17/2023]
Abstract
Metal-organic frameworks (MOFs) are crystalline materials with permanent pores constructed by the self-assembly of organic ligands and metal clusters through coordination bonds. Due to their diversity and tunability, MOFs are used as precursors to be converted into other types of functional materials by pyrolytic recrystallization. Laser-induced synthesis is proven to be a powerful pyrolytic processing technique with fast and accurate laser irradiation, low loss, high efficiency, selectivity, and programmability, which endow MOF derivatives with new features. Laser-induced MOF derivatives exhibit high versatility in multidisciplinary research fields. In this review, first, the basic principles of laser smelting and the types of materials for laser preparation of MOF derivatives are briefly introduced. Subsequently, it is focused on the peculiarity of the engineering of structural defects and their applications in catalysis, environmental protection, and energy fields. Finally, the challenges and opportunities at the current stage are highlighted with the aim of elucidating the future direction of the rapidly growing field of laser-induced synthesis of MOF derivatives.
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Affiliation(s)
- Shuailong Guo
- Singapore Centre for 3D Printing, School of Mechanical and Aerospace Engineering, Nanyang Technological University, Singapore, 639798, Singapore
| | - Ming Gao
- Singapore Centre for 3D Printing, School of Mechanical and Aerospace Engineering, Nanyang Technological University, Singapore, 639798, Singapore
| | - Wang Zhang
- College of Materials Science and Engineering, Zhejiang University of Technology, Hangzhou, 310014, China
| | - Feng Liu
- State Key Laboratory of Powder Metallurgy, Central South University, Changsha, 410083, China
| | - Xueyi Guo
- School of Metallurgy and Environment, Central South University, Changsha, 410083, China
| | - Kun Zhou
- Singapore Centre for 3D Printing, School of Mechanical and Aerospace Engineering, Nanyang Technological University, Singapore, 639798, Singapore
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25
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Liu W, Xiong Y, Liu Q, Chang X, Tian J. The construction of S-scheme heterostructure in ultrathin WS 2/Zn 3In 2S 6 nanosheets for enhanced photocatalytic hydrogen evolution. J Colloid Interface Sci 2023; 651:633-644. [PMID: 37562305 DOI: 10.1016/j.jcis.2023.07.200] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2023] [Revised: 07/04/2023] [Accepted: 07/30/2023] [Indexed: 08/12/2023]
Abstract
Metal sulfide based photocatalysts are considered to be economic, environmentally benign and renewable. The rapid recombination of photogenerated electrons and holes and low solar energy utilization efficiency, however, remain a huge bottleneck. Herein, two-dimensional/two-dimensional (2D/2D) S-scheme WS2/Zn3In2S6 heterostructure with ultrathin nanosheets intervening between neighboring component has been designed. The large and intimate S-scheme heterojunctions facilitate interfacial charge separation/transfer and optimize the available redox potential. Besides, the ultrathin 2D/2D heterostructure ensures large specific surface area, maximized interface synergistic interaction, and effective exposure of surface active sites. As a result, 2 wt% WS2/Zn3In2S6 exhibits a high photocatalytic hydrogen production rate of 30.21 mmol·g-1·h-1 under simulated solar light illumination with an apparent quantum efficiency of 56.1% at 370 nm monochromatic light, far exceeding pristine Zn3In2S6 (6.65 mmol·g-1·h-1). Our work underscores the significance of integrating morphology engineering and S-scheme heterojunctions design for high-efficient and low-cost photocatalysts.
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Affiliation(s)
- Wendi Liu
- School of Materials Science and Engineering, Shandong University of Science and Technology, Qingdao 266590, Shandong, PR China
| | - Ya Xiong
- School of Materials Science and Engineering, Shandong University of Science and Technology, Qingdao 266590, Shandong, PR China.
| | - Qian Liu
- School of Materials Science and Engineering, Shandong University of Science and Technology, Qingdao 266590, Shandong, PR China
| | - Xiao Chang
- College of Physics, Qingdao University, Qingdao 266071, Shandong, PR China
| | - Jian Tian
- School of Materials Science and Engineering, Shandong University of Science and Technology, Qingdao 266590, Shandong, PR China.
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26
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Cheng Y, Zhang Y, Wang Z, Guo R, You J, Zhang H. Review of Bi-based catalysts in piezocatalytic, photocatalytic and piezo-photocatalytic degradation of organic pollutants. NANOSCALE 2023; 15:18571-18580. [PMID: 37955616 DOI: 10.1039/d3nr05016e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/14/2023]
Abstract
Photocatalysis, as an effective advanced oxidation process, has been widely carried out in water waste treatment, especially in the degradation of organic pollutants. However, the photocatalytic process is limited by the high recombination rate of photo-generated carriers. To improve photocatalytic efficiency, piezocatalysis has attracted increasing attention, especially that using lead-free piezoelectric materials, which avoids the secondary pollution of lead toxicity in the environment. Bi-based materials have both photocatalytic activity and piezocatalytic activity, which can perfectly combine the advantages of these two catalytic processes to promote the degradation of organic pollutants. Under an external mechanical action, the Bi-based catalyst produces a polarized electric field due to the piezoelectric effect, and the photo-generated carriers can be effectively separated under electrostatic attraction, thus obtaining more efficient photocatalytic performance. However, there are still many gaps in the design, reaction mechanism, and development prospects of Bi-based piezo-photocatalysts. Therefore, to acquire a deeper understanding of the research status of Bi-based piezo-photocatalysts, we summarize the existing literature to provide effective ways to improve piezo-photocatalytic performance. Moreover, this paper points out the developmental direction of piezo-photocatalysis in the future. Last but not least, we also look forward to the prospect of piezo-photocatalysis in the degradation of organic pollutants.
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Affiliation(s)
- Ying Cheng
- School of Materials Science and Engineering, Northeastern University, Shenyang 110819, China.
- School of Resources and Materials, Northeastern University at Qinhuangdao, Qinhuangdao 066004, China
| | - Yubo Zhang
- School of Materials Science and Engineering, Northeastern University, Shenyang 110819, China.
- School of Resources and Materials, Northeastern University at Qinhuangdao, Qinhuangdao 066004, China
| | - Zhaobo Wang
- School of Materials Science and Engineering, Northeastern University, Shenyang 110819, China.
- School of Resources and Materials, Northeastern University at Qinhuangdao, Qinhuangdao 066004, China
| | - Rui Guo
- School of Materials Science and Engineering, Northeastern University, Shenyang 110819, China.
- School of Resources and Materials, Northeastern University at Qinhuangdao, Qinhuangdao 066004, China
| | - Junhua You
- School of Materials Science and Engineering, Shenyang University of Technology, Shenyang 110870, China
| | - Hangzhou Zhang
- Department of Orthopedics; Joint Surgery and Sports Medicine, First Affiliated Hospital of China Medical University, Shenyang 110001, China.
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27
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Yuan C, Yin H, Lv H, Zhang Y, Li J, Xiao D, Yang X, Zhang Y, Zhang P. Defect and Donor Manipulated Highly Efficient Electron-Hole Separation in a 3D Nanoporous Schottky Heterojunction. JACS AU 2023; 3:3127-3140. [PMID: 38034977 PMCID: PMC10685433 DOI: 10.1021/jacsau.3c00482] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/18/2023] [Revised: 09/29/2023] [Accepted: 10/03/2023] [Indexed: 12/02/2023]
Abstract
Given the rapid recombination of photogenerated charge carriers and photocorrosion, transition metal sulfide photocatalysts usually suffer from modest photocatalytic performance. Herein, S-vacancy-rich ZnIn2S4 (VS-ZIS) nanosheets are integrated on 3D bicontinuous nitrogen-doped nanoporous graphene (N-npG), forming 3D heterostructures with well-fitted geometric configuration (VS-ZIS/N-npG) for highly efficient photocatalytic hydrogen production. The VS-ZIS/N-npG presents ultrafast interfacial photogenerated electrons captured by the S vacancies in VS-ZIS and holes neutralization behaviors by the extra free electrons in N-npG during photocatalysis, which are demonstrated by in situ XPS, femtosecond transient absorption (fs-TA) spectroscopy, and transient-state surface photovoltage (TS-SPV) spectra. The simulated interfacial charge rearrangement behaviors from DFT calculations also verify the separation tendency of photogenerated charge carriers. Thus, the optimized VS-ZIS/N-npG 3D hierarchical heterojunction with 1.0 wt % N-npG exhibits a comparably high hydrogen generation rate of 4222.4 μmol g-1 h-1, which is 5.6-fold higher than the bare VS-ZIS and 12.7-fold higher than the ZIS without S vacancies. This work sheds light on the rational design of photogenerated carrier transfer paths to facilitate charge separation and provides further hints for the design of hierarchical heterostructure photocatalysts.
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Affiliation(s)
- Chunyu Yuan
- School
of Physics and Physical Engineering, Qufu
Normal University, Qufu 273165, China
| | - Hongfei Yin
- School
of Physics and Physical Engineering, Qufu
Normal University, Qufu 273165, China
| | - Huijun Lv
- School
of Physics and Physical Engineering, Qufu
Normal University, Qufu 273165, China
| | - Yujin Zhang
- School
of Physics and Physical Engineering, Qufu
Normal University, Qufu 273165, China
| | - Jing Li
- Key
Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry, Chinese
Academy of Sciences, Beijing 100190, China
| | - Dongdong Xiao
- Institute
of Physics, Chinese Academy of Sciences, Beijing 100190, China
| | - Xiaoyong Yang
- School
of Physics and Physical Engineering, Qufu
Normal University, Qufu 273165, China
- Condensed
Matter Theory Group, Materials Theory Division, Department of Physics
and Astronomy, Uppsala University, Box 516, 75120 Uppsala, Sweden
| | - Yongzheng Zhang
- School
of Physics and Physical Engineering, Qufu
Normal University, Qufu 273165, China
| | - Ping Zhang
- School
of Physics and Physical Engineering, Qufu
Normal University, Qufu 273165, China
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28
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Lunardi A, Bortolotto T, Nunes Cechin C, Daudt NDF, Mello MDA, Dos Santos SS, Cargnelutti R, Lang ES, Tirloni B. Novel organically linked Zn II hydrogenselenite coordination polymers: synthesis, characterization, and efficient TiO 2 photosensitization for enhanced photocatalytic hydrogen production. Dalton Trans 2023; 52:16841-16848. [PMID: 37909357 DOI: 10.1039/d3dt03094f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2023]
Abstract
This study focused on the solvothermal synthesis, characterization, and photocatalytic activities of two novel coordination polymers, namely [Zn(μ-HSeO3)2(bipy)]n (1) and [Zn(μ-HSeO3)2(phen)]n (2). These compounds represent the first organically linked ZnII hydrogenselenite coordination polymers. The synthesis of compounds 1 and 2 involved the addition of 2,2'-bipyridine and 1,10-phenanthroline, respectively, to SeO2 and ZnO in methanol as the solvent. The novel hydrogenselenite compounds were thoroughly characterized using spectroscopic and crystallographic methods. The photocatalytic solids (TiO2-1A and TiO2-2A) were prepared by immobilizing compounds 1-2 onto TiO2 through the sol-gel approach. These photocatalysts were then evaluated for hydrogen evolution via water splitting using a 300 W Hg/Xe lamp as the irradiation source. Among the newly synthesized photocatalytic materials, TiO2-1A demonstrated auspicious photocatalytic performance for hydrogen gas production. Its catalytic activity overcame the observed for the pure solid support TiO2 and Degussa P25 (commercial titania), making compound 1 a particularly attractive TiO2 photosensitizer. Additionally, TiO2-1A exhibited superior photocatalytic activity compared to TiO2-2A. The latter performed better than freshly prepared TiO2, approaching that of Degussa P25. These findings highlight the potential of compound 1 as an effective photosensitizer for TiO2-based photocatalysis, making it a promising candidate for applications in clean energy generation, specifically in hydrogen production by water splitting.
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Affiliation(s)
- Andressa Lunardi
- Departamento de Química, Universidade Federal de Santa Maria - UFSM, Laboratório de Materiais Inorgânicos - LMI, 97105-900, Santa Maria, RS, Brazil.
| | - Tanize Bortolotto
- Departamento de Química, Universidade Federal de Santa Maria - UFSM, Laboratório de Materiais Inorgânicos - LMI, 97105-900, Santa Maria, RS, Brazil.
| | - Camila Nunes Cechin
- Departamento de Química, Universidade Federal de Santa Maria - UFSM, Laboratório de Materiais Inorgânicos - LMI, 97105-900, Santa Maria, RS, Brazil.
| | - Natália de Freitas Daudt
- Departamento de Engenharia Mecânica, Universidade Federal de Santa Maria - UFSM, 97105-900, Santa Maria, RS, Brazil
| | - Melina de Azevedo Mello
- Colégio Técnico Industrial de Santa Maria - CTISM - Universidade Federal de Santa Maria - UFSM, 97105-900, Santa Maria, RS, Brazil
| | - Sailer S Dos Santos
- Departamento de Química, Universidade Federal de Santa Maria - UFSM, Laboratório de Materiais Inorgânicos - LMI, 97105-900, Santa Maria, RS, Brazil.
| | - Roberta Cargnelutti
- Departamento de Química, Universidade Federal de Santa Maria - UFSM, Laboratório de Materiais Inorgânicos - LMI, 97105-900, Santa Maria, RS, Brazil.
| | - Ernesto Schulz Lang
- Departamento de Química, Universidade Federal de Santa Maria - UFSM, Laboratório de Materiais Inorgânicos - LMI, 97105-900, Santa Maria, RS, Brazil.
| | - Bárbara Tirloni
- Departamento de Química, Universidade Federal de Santa Maria - UFSM, Laboratório de Materiais Inorgânicos - LMI, 97105-900, Santa Maria, RS, Brazil.
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29
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Han X, Zhou Z, Gao J, Zhao Y, Chen T. Effect of Carbon Nanoparticles Morphology on the Properties of Poly(styrene- b-isoprene- b-styrene) Elastomer Composites. Polymers (Basel) 2023; 15:4415. [PMID: 38006139 PMCID: PMC10675780 DOI: 10.3390/polym15224415] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2023] [Revised: 11/05/2023] [Accepted: 11/14/2023] [Indexed: 11/26/2023] Open
Abstract
Though nanomaterials based on carbon have been widely used for the preparation of high-performance polymeric nanocomposites, there are few works focused on the effect of carbon nanoparticle morphology on the performance of corresponding polymer nanocomposites. Therefore, four representative carbon nanoparticles, including fullerene, carbon nanotubes, graphene, and carbon black incorporated poly(styrene-b-isoprene-b-styrene) (SIS) elastomer nanocomposites were fabricated using the solvent casting method. In addition, the effect of carbon nanoparticle morphology on the rheological, mechanical, electrical, and thermal properties of the obtained polymeric nanocomposites was systematically investigated. The results showed that the shape of carbon nanoparticles has a different effect on the properties of the obtained elastomer nanocomposites, which lays the foundation of carbon nanoparticle screening for high-performance polymer nanocomposite construction.
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Affiliation(s)
| | | | - Jie Gao
- Hubei Key Laboratory of Radiation Chemistry and Functional Materials, School of Nuclear Technology and Chemistry & Biology, Hubei University of Science and Technology, Xianning 437100, China; (X.H.); (Z.Z.); (Y.Z.)
| | | | - Tao Chen
- Hubei Key Laboratory of Radiation Chemistry and Functional Materials, School of Nuclear Technology and Chemistry & Biology, Hubei University of Science and Technology, Xianning 437100, China; (X.H.); (Z.Z.); (Y.Z.)
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30
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Fu X, Zhou G, Li J, Yao Q, Han Z, Yang R, Chen X, Wang Y. Critical review on modified floating photocatalysts for emerging contaminants removal from landscape water: problems, methods and mechanism. CHEMOSPHERE 2023; 341:140043. [PMID: 37660787 DOI: 10.1016/j.chemosphere.2023.140043] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/22/2023] [Revised: 07/13/2023] [Accepted: 08/31/2023] [Indexed: 09/05/2023]
Abstract
Due to the disorderly discharge in modern production and daily life of people, emerging contaminants(ECs) began to appear in landscape water, and have become a key public concern. Because of the unique characteristics of landscape water, it is difficult to efficiently remove ECs either by natural purification or by traditional large-scale sewage treatment facilities. The ideal purification method is to remove them while maintaining a beautiful environment. Possessing the feature of low-density, floating photocatalysts could harvest sufficient light on the surface of the water for photocatalytic degradation, which may be an important supplement for ECs treatment in landscape water. This paper gave a review related to floating photocatalysts and proposed an idea of combining floating photocatalysts to construct bionic photocatalytic materials for contaminative landscape water treatment. Six types of common floating substrates and corresponding applications for floating photocatalysts were concluded in this paper, and the main problem leading to the low efficiency of photocatalysts and three corresponding three improvement strategies were discussed. Besides, the modification mechanisms of photocatalysts were discussed thoroughly. On this basis, the engineering application prospects of bionic photocatalytic materials were proposed to remove ECs in landscape water.
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Affiliation(s)
- Xiaoning Fu
- College of Safety and Environmental Engineering, Shandong University of Science and Technology, Qingdao, China.
| | - Guangzhu Zhou
- College of Safety and Environmental Engineering, Shandong University of Science and Technology, Qingdao, China.
| | - Jianping Li
- China Testing & Certification International Group Qingdao Jingcheng Testing Co., Ltd., Qingdao, 266426, China.
| | - Qiuhui Yao
- The Third Exploration Team, Shandong Bureau of Coal Geology, Tai'an, 271000, China.
| | - Zuozhen Han
- Shandong Provincial Key Laboratory of Depositional Mineralization and Sedimentary Minerals, College of Earth Science and Engineering, Shandong University of Science and Technology, Qingdao, China.
| | - Rongchao Yang
- College of Safety and Environmental Engineering, Shandong University of Science and Technology, Qingdao, China.
| | - Xi Chen
- College of Safety and Environmental Engineering, Shandong University of Science and Technology, Qingdao, China.
| | - Yuanhao Wang
- College of Safety and Environmental Engineering, Shandong University of Science and Technology, Qingdao, China.
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31
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Liu M, Ning Y, Ren M, Fu X, Cui X, Hou D, Wang Z, Cui J, Lin A. Internal Electric Field-Modulated Charge Migration Behavior in MoS 2 /MIL-53(Fe) S-Scheme Heterojunction for Boosting Visible-Light-Driven Photocatalytic Chlorinated Antibiotics Degradation. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2023; 19:e2303876. [PMID: 37469229 DOI: 10.1002/smll.202303876] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/08/2023] [Revised: 07/06/2023] [Indexed: 07/21/2023]
Abstract
Inadequate photo-generated charge separation, migration, and utilization efficiency limit the photocatalytic efficiency. Herein, a MoS2 /MIL-53(Fe) photocatalyst/activator with the S-scheme heterojunction structure is designed and the charge migration behavior is modulated by the internal electric field (IEF). The IEF intensity is enhanced to 40 mV by modulating band bending potential and the depletion layer length of MoS2 . The photo-generated electron migration process is boosted by constructing the electron migration bridge (Fe-O-S) and modulating the IEF as the driving force, confirmed by the density functional theory calculation. Compared with the pristine materials, the photocurrent density of MoS2 /MIL-53(Fe) is significantly enhanced 27.5 times. Contributed by the visible-light-driven cooperative catalytic degradation and the high-efficiency direct photo-generated electron reduction dichlorination process, satisfactory chlorinated antibiotics removal and detoxification performances are achieved. This study opens up new insights into the application of heterojunctions in photocatalytic activation of PDS in environmental remediation.
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Affiliation(s)
- Meng Liu
- College of Chemical Engineering, Beijing University of Chemical Technology, Beijing, 100029, P. R. China
| | - Yuting Ning
- College of Chemical Engineering, Beijing University of Chemical Technology, Beijing, 100029, P. R. China
| | - Meng Ren
- College of Chemical Engineering, Beijing University of Chemical Technology, Beijing, 100029, P. R. China
| | - Xinping Fu
- College of Chemical Engineering, Beijing University of Chemical Technology, Beijing, 100029, P. R. China
| | - Xuedan Cui
- College of Chemical Engineering, Beijing University of Chemical Technology, Beijing, 100029, P. R. China
| | - Daibing Hou
- College of Chemical Engineering, Beijing University of Chemical Technology, Beijing, 100029, P. R. China
| | - Zihan Wang
- College of Chemical Engineering, Beijing University of Chemical Technology, Beijing, 100029, P. R. China
| | - Jun Cui
- College of Chemical Engineering, Beijing University of Chemical Technology, Beijing, 100029, P. R. China
| | - Aijun Lin
- College of Chemical Engineering, Beijing University of Chemical Technology, Beijing, 100029, P. R. China
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32
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Nguyen VC, Nimbalkar DB, Hoang Huong V, Lee YL, Teng H. Elucidating the mechanism of photocatalytic reduction of bicarbonate (aqueous CO 2) into formate and other organics. J Colloid Interface Sci 2023; 649:918-928. [PMID: 37392682 DOI: 10.1016/j.jcis.2023.06.155] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2023] [Revised: 05/22/2023] [Accepted: 06/22/2023] [Indexed: 07/03/2023]
Abstract
The photocatalytic reduction of CO2 under solar irradiation is an ideal approach to mitigating global warming, and reducing aqueous forms of CO2 that interact strongly with a catalyst (e.g., HCO3-) is a promising strategy to expedite such reductions. This study uses Pt-deposited graphene oxide dots as a model photocatalyst to elucidate the mechanism of HCO3- reduction. The photocatalyst steadily catalyzes the reduction of an HCO3- solution (at pH = 9) containing an electron donor under 1-sun illumination over a period of 60 h to produce H2 and organic compounds (formate, methanol, and acetate). H2 is derived from solution-contained H2O, which undergoes photocatalytic cleavage to produce •H atoms. Isotopic analysis reveals that all of the organics formed via interactions between HCO3- and •H. This study proposes mechanistic steps, which are governed by the reacting behavior of the •H, to correlate the electron transfer steps and product formation of this photocatalysis. This photocatalysis achieves overall apparent quantum efficiency of 27% in the formation of reaction products under monochromatic irradiation at 420 nm. This study demonstrates the effectiveness of aqueous-phase photocatalysis in converting aqueous CO2 into valuable chemicals and the importance of H2O-derived •H in governing the product selectivity and formation kinetics.
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Affiliation(s)
- Van-Can Nguyen
- Department of Chemical Engineering, National Cheng Kung University, Tainan 70101, Taiwan
| | - Dipak B Nimbalkar
- Department of Chemical Engineering, National Cheng Kung University, Tainan 70101, Taiwan
| | - Vu Hoang Huong
- Faculty of Physics, University of Science, Vietnam National University, Hanoi 100000, Viet Nam
| | - Yuh-Lang Lee
- Department of Chemical Engineering, National Cheng Kung University, Tainan 70101, Taiwan; Hierarchical Green-Energy Materials (Hi-GEM) Research Center, National Cheng Kung University, Tainan 70101, Taiwan
| | - Hsisheng Teng
- Department of Chemical Engineering, National Cheng Kung University, Tainan 70101, Taiwan; Hierarchical Green-Energy Materials (Hi-GEM) Research Center, National Cheng Kung University, Tainan 70101, Taiwan; Center of Applied Nanomedicine, National Cheng Kung University, Tainan 70101, Taiwan.
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Mukherjee A, Dhak P, Mandal D, Dhak D. Solvothermal synthesis of 3D rod-shaped Ti/Al/Cr nano-oxide for photodegradation of wastewater micropollutants under sunlight: a green way to achieve SDG:6. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023:10.1007/s11356-023-30112-8. [PMID: 37812343 DOI: 10.1007/s11356-023-30112-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/02/2023] [Accepted: 09/24/2023] [Indexed: 10/10/2023]
Abstract
Waterbodies are day-by-day polluted by the various colored micropollutants, e.g., azo dyes enriched (carcinogenic, non-biodegradable) colored wastewater from textile industries. Water pollution has become a serious global issue as ~ 25% of health diseases are prompted by pollution as reported by WHO. Around 1 billion people will face water scarcity by 2025 and this water crisis is also a prime focus to the UNs' sustainable development goal 6 (SDG6: clean water and sanitation). To prevent the water pollution caused by micropollutants, a mesoporous, 3D rod-like nano-oxide Ti/Al/Cr (abbreviated as TAC) has been synthesized via the solvothermal method. TAC degraded all classes of azo dyes (mono, di, tri, etc.) with > 90% efficiency under renewable energy source solar irradiation within the pH range 2-11. The detailed study was done on the photodegradation of carcinogenic di-azo dye Congo red (CR) which is banned in many countries. TAC showed 90.64 ± 2% degradation efficiency for CR at pH 7. The proposed photodegradation mechanism of CR was confirmed by the high-resolution liquid chromatography-mass spectroscopy (HRLC-MS) analysis obeying the Pirkanniemi path. The photodegradation obeyed the pseudo-1st-order kinetics and was reusable up to successive 5 cycles which can be an efficient tool to meet the UNs' SDG:6.
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Affiliation(s)
- Arnab Mukherjee
- Nanomaterials Research Lab, Department of Chemistry, Sidho-Kanho-Birsha University, Purulia, 723104, India
| | - Prasanta Dhak
- Department of Chemistry, Techno India University, Kolkata, 700091, India
| | - Debpriya Mandal
- Nanomaterials Research Lab, Department of Chemistry, Sidho-Kanho-Birsha University, Purulia, 723104, India
| | - Debasis Dhak
- Nanomaterials Research Lab, Department of Chemistry, Sidho-Kanho-Birsha University, Purulia, 723104, India.
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Upreti BB, Kamboj N, Dey RS. Laser-irradiated carbonized polyaniline-N-doped graphene heterostructure improves the cyclability of on-chip microsupercapacitor. NANOSCALE 2023; 15:15268-15278. [PMID: 37675630 DOI: 10.1039/d3nr02862c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/08/2023]
Abstract
Laser-irradiated graphene-based heterostructures have attracted significant attention for the fabrication of highly conducting and stable metal-free energy storage devices. Heteroatom doping on the graphene backbone has proven to have better charge storage properties. Among other heteroatoms, nitrogen-doped graphene (NG) has been extensively researched due to its several advanced properties while maintaining the original characteristics of graphene for energy storage applications. However, NG is generally prepared via chemical vapor deposition or high temperature pyrolysis method, which gives low yield and has a complex operation route. In this work, first a polyaniline-reduce graphene oxide (PANI-rGO) heterostructure was prepared via in situ electrochemical polymerization, followed by the deposition process. In the next step, laser-irradiation process was employed to carbonize polyaniline as well as doping of nitrogen on the graphene film, simultaneously. For the very first time, laser-irradiated carbonization of PANI on NG (cPANI-NG) heterostructure was utilized for microsupercapacitor (MSC). The as-prepared cPANI-NG-MSC shows extremely high cycling stability with a capacitance enhancement of 135% of its initial capacitance after 70 000 continuous charge-discharge cycles. It is very interesting to know the origin of the capacitance enhancement, which results from the change of pyrrolic N in NG-MSC to the pyridinic and graphitic N. An on-chip NG-MSC exhibits an excellent charge storage capacitance of 43.5 mF cm-2 at a current density of 0.5 mA cm-2 and shows impressive power delivery at a very high scan rate of 100 V s-1. The excellent rate capability of the MSC shows capacitance retention up to 70.1% with the variation of current density. This unique approach to fabricate NG-MSC can have a broad range of applications as energy storage devices in the electronics market, as demonstrated by glowing a commercial red LED.
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Affiliation(s)
| | - Navpreet Kamboj
- Institute of Nano Science and Technology (INST), Mohali-140306, Punjab, India.
| | - Ramendra Sundar Dey
- Institute of Nano Science and Technology (INST), Mohali-140306, Punjab, India.
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35
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Sun H, Wang L, Li Z, Yan X, Zhang X, Guo J, Liu P. Strain engineering on electronic structure, effective mass and charge carrier mobility in monolayer YBr 3. JOURNAL OF PHYSICS. CONDENSED MATTER : AN INSTITUTE OF PHYSICS JOURNAL 2023; 36:015501. [PMID: 37714188 DOI: 10.1088/1361-648x/acfa56] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/26/2023] [Accepted: 09/15/2023] [Indexed: 09/17/2023]
Abstract
In recent years, two-dimensional materials have significant prospects for applications in nanoelectronic devices due to their unique physical properties. In this paper, the strain effect on the electronic structure, effective mass, and charge carrier mobility of monolayer yttrium bromide (YBr3) is systematically investigated using first-principles calculation based on density functional theory. It is found that the monolayer YBr3undergoes energy band gap reduction under the increasing compressive strain. The effective mass and charge carrier mobility can be effectively tuned by the applied compressive strain. Under the uniaxial compressive strain along the zigzag direction, the hole effective mass in the zigzag direction (mao1_h) can decrease from 1.64m0to 0.45m0. In addition, when the uniaxial compressive strain is applied, the electron and hole mobility can up to ∼103cm2V-1s-1. The present investigations emphasize that monolayer YBr3is expected to be a candidate material for the preparation of new high-performance nanoelectronic devices by strain engineering.
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Affiliation(s)
- Huaizheng Sun
- Key Laboratory of Brain-Like Neuromorphic Devices and Systems of Hebei Province, College of Electronic and Information Engineering, Hebei University, Baoding 071002, People's Republic of China
| | - Linxia Wang
- Key Laboratory of Brain-Like Neuromorphic Devices and Systems of Hebei Province, College of Electronic and Information Engineering, Hebei University, Baoding 071002, People's Republic of China
| | - Zhixiang Li
- Key Laboratory of Brain-Like Neuromorphic Devices and Systems of Hebei Province, College of Electronic and Information Engineering, Hebei University, Baoding 071002, People's Republic of China
| | - Xiaobing Yan
- Key Laboratory of Brain-Like Neuromorphic Devices and Systems of Hebei Province, College of Electronic and Information Engineering, Hebei University, Baoding 071002, People's Republic of China
| | - Xin Zhang
- Key Laboratory of Brain-Like Neuromorphic Devices and Systems of Hebei Province, College of Electronic and Information Engineering, Hebei University, Baoding 071002, People's Republic of China
| | - Jianxin Guo
- Hebei Key Lab of Optic-Electronic Information and Materials, College of Physics Science and Technology, Hebei University, Baoding 071002, People's Republic of China
| | - Pan Liu
- Key Laboratory of Brain-Like Neuromorphic Devices and Systems of Hebei Province, College of Electronic and Information Engineering, Hebei University, Baoding 071002, People's Republic of China
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Zhang L, He J, Li N, Yuan J, Li W, Liu P, Yan T. Ternary CdS@MoS 2-Co 3O 4 Multiheterojunction Photocatalyst for Boosting Photocatalytic H 2 Evolution. ACS APPLIED MATERIALS & INTERFACES 2023; 15:43790-43798. [PMID: 37679865 DOI: 10.1021/acsami.3c09073] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/09/2023]
Abstract
Turning the carrier dynamics in heterojunction photocatalysts is a direct and effective strategy for improving the solar energy conversion efficiency of photocatalysts. Herein, we report a ternary CdS@MoS2-Co3O4 multiheterojunction photocatalyst consisting of the p-n junction of MoS2-Co3O4 and the type-I junction of CdS@MoS2, wherein MoS2 located at the frontier between CdS and Co3O4 acts as an intermediate bridge. The type-I junction allows the directional transfer of photoinduced charge from CdS to MoS2, suppressing the photocorrosion of CdS. Notably, the single-particle photoluminescence technique demonstrates the sequential one-direction hole transfer from MoS2 to Co3O4 aroused by the p-n junction, resulting in a long-lifetime charge separation in the carrier lifetime (54-58 ns). Compared to the bare CdS and type-I CdS@MoS2, the CdS@MoS2-Co3O4 photocatalyst affords a 347-fold and 3.5-fold enhancement of the H2 evolution rate, a quantum efficiency of 28.6% at 450 nm, and a 20 h of long-term stability. This work provides a new understanding of the rational regulation of the charge-transfer mechanism of type-I systems by constructing multiheterojunction photocatalysts.
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Affiliation(s)
- Lulu Zhang
- Key Laboratory of Catalytic Conversion and Clean Energy in Universities of Shandong Province, School of Chemistry and Chemical Engineering, Qufu Normal University, Qufu, Shandong 273165, P. R. China
| | - Jingxuan He
- Key Laboratory of Catalytic Conversion and Clean Energy in Universities of Shandong Province, School of Chemistry and Chemical Engineering, Qufu Normal University, Qufu, Shandong 273165, P. R. China
| | - Na Li
- Key Laboratory of Catalytic Conversion and Clean Energy in Universities of Shandong Province, School of Chemistry and Chemical Engineering, Qufu Normal University, Qufu, Shandong 273165, P. R. China
| | - Jie Yuan
- State Key Laboratory of Photocatalysis on Energy and Environment, Fuzhou University, Fuzhou 350116, P. R. China
| | - Wenjuan Li
- Key Laboratory of Catalytic Conversion and Clean Energy in Universities of Shandong Province, School of Chemistry and Chemical Engineering, Qufu Normal University, Qufu, Shandong 273165, P. R. China
| | - Ping Liu
- State Key Laboratory of Photocatalysis on Energy and Environment, Fuzhou University, Fuzhou 350116, P. R. China
| | - Tingjiang Yan
- Key Laboratory of Catalytic Conversion and Clean Energy in Universities of Shandong Province, School of Chemistry and Chemical Engineering, Qufu Normal University, Qufu, Shandong 273165, P. R. China
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37
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Bao L, Ren X, Liu C, Liu X, Dai C, Yang Y, Bououdina M, Ali S, Zeng C. Modulating the doping state of transition metal ions in ZnS for enhanced photocatalytic activity. Chem Commun (Camb) 2023; 59:11280-11283. [PMID: 37665259 DOI: 10.1039/d3cc03436d] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/05/2023]
Abstract
Transition metal ions (M = Ag+, Cu2+, Co2+, and Cr3+) are surface or homogeneously doped into ZnS via facile cation-exchange reaction, and while Ag+ and Cu2+ doping does not induce sulphur vacancies (Vs) or zinc vacancies (VZn), Co2+ and Cr3+ doping induces Vs. The surface doped catalysts exhibit greatly higher activity than the ZnS and homogenous doped catalysts for H2 evolution and CO2 reduction. The important role of the doping state on affecting the photo-absorption, carrier separation efficiency, and photoreaction kinetics has been systemically investigated and proposed. This work sheds light on the future design and fabrication of high-performance photocatalysts by element doping.
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Affiliation(s)
- Linping Bao
- Institute of Advanced Materials, College of Chemistry and Chemical Engineering, Key Lab of Fluorine and Silicon for Energy Materials and Chemistry of Ministry of Education, Jiangxi Normal University, Nanchang 330022, PR China.
| | - Xiaohui Ren
- The State Key Laboratory of Refractories and Metallurgy, School of Materials and Metallurgy, Wuhan University of Science and Technology, Wuhan 430081, PR China
| | - Chengyin Liu
- School of Environmental and Material Engineering, Yantai University, Yantai 264005, PR China
| | - Xin Liu
- Institute of Advanced Materials, College of Chemistry and Chemical Engineering, Key Lab of Fluorine and Silicon for Energy Materials and Chemistry of Ministry of Education, Jiangxi Normal University, Nanchang 330022, PR China.
| | - Chunhui Dai
- Jiangxi Key Laboratory for Mass Spectrometry and Instrumentation, East China University of Technology, Nanchang 330013, PR China
| | - Yong Yang
- Jiangxi Key Laboratory of Nanomaterials and Sensors, Jiangxi Key Laboratory of Photoelectronics and Telecommunication, School of Physics, Communication and Electronics, Jiangxi Normal University, Nanchang, Jiangxi Province, 330022, PR China
| | - Mohamed Bououdina
- Department of Mathematics and Sciences, College of Humanities and Sciences, Prince Sultan University, Riyadh 11586, Saudi Arabia
| | - Sajjad Ali
- Energy, Water, and Environment Lab, College of Humanities and Sciences, Prince Sultan University, Riyadh 11586, Saudi Arabia.
| | - Chao Zeng
- Institute of Advanced Materials, College of Chemistry and Chemical Engineering, Key Lab of Fluorine and Silicon for Energy Materials and Chemistry of Ministry of Education, Jiangxi Normal University, Nanchang 330022, PR China.
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Odutola J, Szalad H, Albero J, García H, Tkachenko NV. Long-Lived Photo-Response of Multi-Layer N-Doped Graphene-Based Films. THE JOURNAL OF PHYSICAL CHEMISTRY. C, NANOMATERIALS AND INTERFACES 2023; 127:17896-17905. [PMID: 37736291 PMCID: PMC10510389 DOI: 10.1021/acs.jpcc.3c04670] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/11/2023] [Revised: 08/17/2023] [Indexed: 09/23/2023]
Abstract
New insights into the mechanism of the improved photo(electro)catalytic activity of graphene by heteroatom doping were explored by transient transmittance and reflectance spectroscopy of multi-layer N-doped graphene-based samples on a quartz substrate prepared by chitosan pyrolysis in the temperature range 900-1200 °C compared to an undoped graphene control. All samples had an expected photo-response: fast relaxation (within 1 ps) due to decreased plasmon damping and increased conductivity. However, the N-doped graphenes had an additional transient absorption signal of roughly 10 times lower intensity, with 10-50 ps formation time and the lifetime extending into the nanosecond domain. These photo-induced responses were recalculated as (complex) dielectric function changes and decomposed into Drude-Lorentz parameters to derive the origin of the opto(electronic) responses. Consequently, the long-lived responses were revealed to have different dielectric function spectra from those of the short-lived responses, which was ultimately attributed to electron trapping at doping centers. These trapped electrons are presumed to be responsible for the improved catalytic activity of multi-layer N-doped graphene-based films compared to that of multi-layer undoped graphene-based films.
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Affiliation(s)
- Jokotadeola
A. Odutola
- Photonics
Compound and Nanomaterials (Chemistry and Advanced Materials Group),
Faculty of Engineering and Natural Sciences, Tampere University, Korkeakoulunkatu 8, FI-33720 Tampere, Finland
| | - Horatiu Szalad
- Instituto
Universitario de Tecnología Química, Universitat Politècnica de València, Avda. de los Naranjos s/n, 46022 Valencia, Spain
| | - Josep Albero
- Instituto
Universitario de Tecnología Química, Universitat Politècnica de València, Avda. de los Naranjos s/n, 46022 Valencia, Spain
| | - Hermenegildo García
- Instituto
Universitario de Tecnología Química, Universitat Politècnica de València, Avda. de los Naranjos s/n, 46022 Valencia, Spain
| | - Nikolai V. Tkachenko
- Photonics
Compound and Nanomaterials (Chemistry and Advanced Materials Group),
Faculty of Engineering and Natural Sciences, Tampere University, Korkeakoulunkatu 8, FI-33720 Tampere, Finland
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Wu H, Quan Y, Liu M, Tian X, Ren C, Wang Z. Synthesis of AgBr/Ti 3C 2@TiO 2 ternary composite for photocatalytic dehydrogenation of 1,4-dihydropyridine and photocatalytic degradation of tetracycline hydrochloride. RSC Adv 2023; 13:21754-21768. [PMID: 37476041 PMCID: PMC10354501 DOI: 10.1039/d3ra02164e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2023] [Accepted: 07/10/2023] [Indexed: 07/22/2023] Open
Abstract
In this work, AgBr/Ti3C2@TiO2 ternary composite photocatalyst was prepared by a solvothermal and precipitation method with the aims of introducing Ti3C2 as a cocatalyst and TiO2 as a compositing semiconductor. The crystal structure, morphology, elemental state, functional groups and photoelectrochemical properties were studied by XRD, SEM, TEM, XPS, FI-IR and EIS. The photocatalytic performances of the composites were investigated by the photodehydrogenation of diethyl 1,4-dihydro-2,6-dimethyl-3,5-pyridinedicarboxylate (1,4-DHP) and the photodegradation of tetracycline hydrochloride (TCH) under visible light irradiation (λ > 400 nm). The AgBr/Ti3C2@TiO2 composite photocatalyst showed enhanced photocatalytic performance in both photocatalytic reactions. The photocatalytic activity of the composite photocatalyst is dependent on the proportional content of Ti3C2@TiO2. With optimized Ti3C2@TiO2 proportion, the photocatalytic ability of the AgBr/Ti3C2@TiO2 composite was 24.5 times as high as that of Ti3C2@TiO2 for photodehydrogenation of 1,4-DHP and 1.9 times as high as that of pure AgBr for photodegradation of TCH. The enhanced photocatalytic performance of the AgBr/Ti3C2@TiO2 composite should be due to the formation of a p-n heterojunction structure between AgBr and Ti3C2@TiO2 and the excellent electronic properties of Ti3C2, which enhanced the visible light absorption capacity, lowered the internal resistance, speeded up the charge transfer and reduced the recombination efficiency of photo-generated carriers. Mechanism studies showed that superoxide free radical (˙O2-) was the main active species. In addition, the composite photocatalyst also displayed good stability, indicating its reutilization in practical application.
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Affiliation(s)
- Hanliu Wu
- Chemical Synthesis and Pollution Control Key Laboratory of Sichuan Province, College of Chemistry and Chemical Engineering, China West Normal University Nanchong 637002 Sichuan China +86 817-2568081 +86 817-2445233
| | - Yan Quan
- Chemical Synthesis and Pollution Control Key Laboratory of Sichuan Province, College of Chemistry and Chemical Engineering, China West Normal University Nanchong 637002 Sichuan China +86 817-2568081 +86 817-2445233
| | - Meiling Liu
- Chemical Synthesis and Pollution Control Key Laboratory of Sichuan Province, College of Chemistry and Chemical Engineering, China West Normal University Nanchong 637002 Sichuan China +86 817-2568081 +86 817-2445233
| | - Xuemei Tian
- Chemical Synthesis and Pollution Control Key Laboratory of Sichuan Province, College of Chemistry and Chemical Engineering, China West Normal University Nanchong 637002 Sichuan China +86 817-2568081 +86 817-2445233
| | - Chunguang Ren
- College of Life Sciences, Yantai University Yantai 264005 China
| | - Zhonghua Wang
- Chemical Synthesis and Pollution Control Key Laboratory of Sichuan Province, College of Chemistry and Chemical Engineering, China West Normal University Nanchong 637002 Sichuan China +86 817-2568081 +86 817-2445233
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40
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Rao KS, Senthilnathan J, Ting JM, Yoshimura M. Continuous Production of Functionalized Graphene Inks by Soft Solution Processing. NANOMATERIALS (BASEL, SWITZERLAND) 2023; 13:2043. [PMID: 37513054 PMCID: PMC10384762 DOI: 10.3390/nano13142043] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/07/2023] [Revised: 06/23/2023] [Accepted: 07/05/2023] [Indexed: 07/30/2023]
Abstract
The continuous production of high-quality, few-layer graphene nanosheets (GNSs) functionalized with nitrogen-containing groups was achieved via a two-stage reaction method. The initial stage produces few-layer GNSs by utilizing our recently developed glycine-bisulfate ionic complex-assisted electrochemical exfoliation of graphite. The second stage, developed here, uses a radical initiator and nitrogen precursor (azobisisobutyronitrile) under microwave conditions in an aqueous solution for the efficient nitrogen functionalization of the initially formed GNSs. These nitrile radical reactions have great advantages in green chemistry and soft processing. Raman spectra confirm the insertion of nitrogen functional groups into nitrogen-functionalized graphene (N-FG), whose disorder is higher than that of GNSs. X-ray photoelectron spectra confirm the insertion of edge/surface nitrogen functional groups. The insertion of nitrogen functional groups is further confirmed by the enhanced dispersibility of N-FG in dimethyl formamide, ethylene glycol, acetonitrile, and water. Indeed, after the synthesis of N-FG in solution, it is possible to disperse N-FG in these liquid dispersants just by a simple washing-centrifugation separation-dispersion sequence. Therefore, without any drying, milling, and redispersion into liquid again, we can produce N-FG ink with only solution processing. Thus, the present work demonstrates the 'continuous solution processing' of N-FG inks without complicated post-processing conditions. Furthermore, the formation mechanism of N-FG is presented.
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Affiliation(s)
- Kodepelly Sanjeeva Rao
- Promotion Center for Global Materials Research (PCGMR), Department of Material Science and Engineering, National Cheng Kung University, Tainan 701, Taiwan
| | - Jaganathan Senthilnathan
- Promotion Center for Global Materials Research (PCGMR), Department of Material Science and Engineering, National Cheng Kung University, Tainan 701, Taiwan
- Department of Civil Engineering, Indian Institute of Technology Madras (IIT Madras), Chennai 600036, Tamil Nadu, India
| | - Jyh-Ming Ting
- Promotion Center for Global Materials Research (PCGMR), Department of Material Science and Engineering, National Cheng Kung University, Tainan 701, Taiwan
| | - Masahiro Yoshimura
- Promotion Center for Global Materials Research (PCGMR), Department of Material Science and Engineering, National Cheng Kung University, Tainan 701, Taiwan
- Hierarchical Green-Energy Materials (Hi-GEM) Research Center, National Cheng Kung University, Tainan 701, Taiwan
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41
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Yang Z, Zhou S, Feng X, Wang N, Ola O, Zhu Y. Recent Progress in Multifunctional Graphene-Based Nanocomposites for Photocatalysis and Electrocatalysis Application. NANOMATERIALS (BASEL, SWITZERLAND) 2023; 13:2028. [PMID: 37446544 DOI: 10.3390/nano13132028] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/09/2023] [Revised: 07/02/2023] [Accepted: 07/04/2023] [Indexed: 07/15/2023]
Abstract
The global energy shortage and environmental degradation are two major issues of concern in today's society. The production of renewable energy and the treatment of pollutants are currently the mainstream research directions in the field of photocatalysis. In addition, over the last decade or so, graphene (GR) has been widely used in photocatalysis due to its unique physical and chemical properties, such as its large light-absorption range, high adsorption capacity, large specific surface area, and excellent electronic conductivity. Here, we first introduce the unique properties of graphene, such as its high specific surface area, chemical stability, etc. Then, the basic principles of photocatalytic hydrolysis, pollutant degradation, and the photocatalytic reduction of CO2 are summarized. We then give an overview of the optimization strategies for graphene-based photocatalysis and the latest advances in its application. Finally, we present challenges and perspectives for graphene-based applications in this field in light of recent developments.
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Affiliation(s)
- Zanhe Yang
- State Key Laboratory of Featured Metal Materials and Life-Cycle Safety for Composite Structures, School of Resources, Environment and Materials, Guangxi University, Nanning 530004, China
| | - Siqi Zhou
- State Key Laboratory of Featured Metal Materials and Life-Cycle Safety for Composite Structures, School of Resources, Environment and Materials, Guangxi University, Nanning 530004, China
| | - Xiangyu Feng
- State Key Laboratory of Featured Metal Materials and Life-Cycle Safety for Composite Structures, School of Resources, Environment and Materials, Guangxi University, Nanning 530004, China
| | - Nannan Wang
- State Key Laboratory of Featured Metal Materials and Life-Cycle Safety for Composite Structures, School of Resources, Environment and Materials, Guangxi University, Nanning 530004, China
| | - Oluwafunmilola Ola
- Advanced Materials Group, Faculty of Engineering, The University of Nottingham, Nottingham NG7 2RD, UK
| | - Yanqiu Zhu
- State Key Laboratory of Featured Metal Materials and Life-Cycle Safety for Composite Structures, School of Resources, Environment and Materials, Guangxi University, Nanning 530004, China
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Nan Z, Wei W, Lin Z, Chang J, Hao Y. Flexible Nanocomposite Conductors for Electromagnetic Interference Shielding. NANO-MICRO LETTERS 2023; 15:172. [PMID: 37420119 PMCID: PMC10328908 DOI: 10.1007/s40820-023-01122-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/27/2023] [Accepted: 05/02/2023] [Indexed: 07/09/2023]
Abstract
HIGHLIGHTS Convincing candidates of flexible (stretchable/compressible) electromagnetic interference shielding nanocomposites are discussed in detail from the views of fabrication, mechanical elasticity and shielding performance. Detailed summary of the relationship between deformation of materials and electromagnetic shielding performance. The future directions and challenges in developing flexible (particularly elastic) shielding nanocomposites are highlighted. With the extensive use of electronic communication technology in integrated circuit systems and wearable devices, electromagnetic interference (EMI) has increased dramatically. The shortcomings of conventional rigid EMI shielding materials include high brittleness, poor comfort, and unsuitability for conforming and deformable applications. Hitherto, flexible (particularly elastic) nanocomposites have attracted enormous interest due to their excellent deformability. However, the current flexible shielding nanocomposites present low mechanical stability and resilience, relatively poor EMI shielding performance, and limited multifunctionality. Herein, the advances in low-dimensional EMI shielding nanomaterials-based elastomers are outlined and a selection of the most remarkable examples is discussed. And the corresponding modification strategies and deformability performance are summarized. Finally, expectations for this quickly increasing sector are discussed, as well as future challenges.
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Affiliation(s)
- Ze Nan
- State Key Discipline Laboratory of Wide Band Gap Semiconductor Technology, School of Microelectronics, Xidian University, 2 South Taibai Road, Xi'an, 710071, People's Republic of China
| | - Wei Wei
- State Key Discipline Laboratory of Wide Band Gap Semiconductor Technology, School of Microelectronics, Xidian University, 2 South Taibai Road, Xi'an, 710071, People's Republic of China.
- Advanced Interdisciplinary Research Center for Flexible Electronics, Xidian University, 2 South Taibai Road, Xi'an, 710071, People's Republic of China.
| | - Zhenhua Lin
- State Key Discipline Laboratory of Wide Band Gap Semiconductor Technology, School of Microelectronics, Xidian University, 2 South Taibai Road, Xi'an, 710071, People's Republic of China
| | - Jingjing Chang
- State Key Discipline Laboratory of Wide Band Gap Semiconductor Technology, School of Microelectronics, Xidian University, 2 South Taibai Road, Xi'an, 710071, People's Republic of China.
- Advanced Interdisciplinary Research Center for Flexible Electronics, Xidian University, 2 South Taibai Road, Xi'an, 710071, People's Republic of China.
| | - Yue Hao
- State Key Discipline Laboratory of Wide Band Gap Semiconductor Technology, School of Microelectronics, Xidian University, 2 South Taibai Road, Xi'an, 710071, People's Republic of China
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Yang L, Si J, Liang L, Wang Y, Zhu L, Zhang Z. Construction of ZnO/Zn 3In 2S 6/Pt with integrated S-scheme/Schottky heterojunctions for boosting photocatalytic hydrogen evolution and bisphenol a degradation. J Colloid Interface Sci 2023; 649:855-866. [PMID: 37390533 DOI: 10.1016/j.jcis.2023.06.164] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2023] [Revised: 06/16/2023] [Accepted: 06/23/2023] [Indexed: 07/02/2023]
Abstract
Photocatalytic water splitting has been identified as a promising solution to tackle the current environmental and energy crisis in the world. However, the challenge of this green technology is the inefficient separation and utilization of photogenerated electron-hole pairs in photocatalysts. To overcome this challenge in one system, a ternary ZnO/Zn3In2S6/Pt material was prepared as a photocatalyst using a stepwise hydrothermal process and in-situ photoreduction deposition. The integrated S-scheme/Schottky heterojunction in the constructed ZnO/Zn3In2S6/Pt photocatalyst enabled it to exhibit efficient photoexcited charge separation/transfer. The evolved H2 reached up to 3.5 mmol g-1h-1. Meanwhile, the ternary composite possessed a high cyclic stability against photo-corrosion under irradiation. Practically, the ZnO/Zn3In2S6/Pt photocatalyst also showed great potential for H2 evolution while simultaneously degrading organic contaminants like bisphenol A. It is hoped in this work that the incorporation of Schottky junctions and S-scheme heterostructures in the construction of photocatalysts would lead to accelerated electron transfer and high photoinduced electron-hole pair separation, respectively, to synergistically enhance the performance of photocatalysts.
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Affiliation(s)
- Lifang Yang
- College of Chemistry and Materials Engineering, Xinxiang University, Xinxiang 453003, PR China.
| | - Jiangju Si
- College of Chemistry and Materials Engineering, Xinxiang University, Xinxiang 453003, PR China
| | - Liang Liang
- College of Chemistry and Materials Engineering, Xinxiang University, Xinxiang 453003, PR China
| | - Yunfei Wang
- College of Chemistry and Materials Engineering, Xinxiang University, Xinxiang 453003, PR China
| | - Li Zhu
- College of Chemistry and Materials Engineering, Xinxiang University, Xinxiang 453003, PR China
| | - Zizhong Zhang
- State Key Laboratory of Photocatalysis on Energy and Environment, Research Institute of Photocatalysis, College of Chemistry, Fuzhou University, Fuzhou 350108, PR China.
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Jameel MH, Roslan MSB, Agam MAB. To Investigate the Structural, Electronic, and Optical Characteristics of 2D Hetero-atoms Al, N, B-doped-Graphene Composites For Photocatalytic Applications: A DFT Study.. [DOI: 10.21203/rs.3.rs-3078072/v1] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/01/2023]
Abstract
Abstract
Two-dimensional (2D) layer structure graphene-doped composites have been confirmed to be an efficient and appropriate material to build effective photo-catalysts with enhanced catalytic efficiency for wastewater and industrial wastage. Graphene exhibits a proficient 2D layer structure, very large conductivity, better-quality electron mobility, and remarkably high surface area with large active sites for the best photocatalytic activity. In the current research structural, electronic, and optical characteristics of 2D Graphene doped-composites are calculated using a first-principles calculation. To use a generalized gradient approximation (GGA) and an ultra-soft pseudopotential (USP), the impact of Aluminium (Al), Nitrogen (N), and Boron (B) on structural, optical, and electronic characteristics of Graphene doped-composites are investigated. By substituting Al, N, and B in Graphene, extra gamma sites are produced into the energy bandgap (Eg). Owing to the difference in ionic radii of Al, N, and B the band gap is found to remarkably increase from 0 to 1.75 eV. The nature of the band gap is found direct. A noteworthy increment is found in Eg as a result of optical conductivity increase of 2.5 to 4.0. Due to the inclusion of Al, N, and B, the energy absorption peaks are increased and shifted to larger energy in the UV-visible spectrum. 2D layer structure doped-Graphene composites have high optical conductivity, refractive index, and energy absorption is an appropriate material for photocatalytic application.
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Li Y, Liu S, Liu R, Pan J, Li X, Zhang J, Zhang X, Zhao Y, Wang D, Quan H, Zhu S. Nanoarchitectonics on Z-scheme and Mott-Schottky heterostructure for photocatalytic water oxidation via dual-cascade charge-transfer pathways. NANOSCALE ADVANCES 2023; 5:3386-3395. [PMID: 37325531 PMCID: PMC10262966 DOI: 10.1039/d3na00182b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/22/2023] [Accepted: 05/08/2023] [Indexed: 06/17/2023]
Abstract
The bottleneck for water splitting to generate hydrogen fuel is the sluggish oxidation of water. Even though the monoclinic-BiVO4 (m-BiVO4)-based heterostructure has been widely applied for water oxidation, carrier recombination on dual surfaces of the m-BiVO4 component have not been fully resolved by a single heterojunction. Inspired by natural photosynthesis, we established an m-BiVO4/carbon nitride (C3N4) Z-scheme heterostructure based on the m-BiVO4/reduced graphene oxide (rGO) Mott-Schottky heterostructure, constructing the face-contact C3N4/m-BiVO4/rGO (CNBG) ternary composite to remove excessive surface recombination during water oxidation. The rGO can accumulate photogenerated electrons from m-BiVO4 through a high conductivity region over the heterointerface, with the electrons then prone to diffuse along a highly conductive carbon network. In an internal electric field at the heterointerface of m-BiVO4/C3N4, the low-energy electrons and holes are rapidly consumed under irradiation. Therefore, spatial separation of electron-hole pairs occurs, and strong redox potentials are maintained by the Z-scheme electron transfer. These advantages endow the CNBG ternary composite with over 193% growth in O2 yield, and a remarkable rise in ·OH and ·O2- radicals, compared to the m-BiVO4/rGO binary composite. This work shows a novel perspective for rationally integrating Z-scheme and Mott-Schottky heterostructures in the water oxidation reaction.
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Affiliation(s)
- Yao Li
- State Key Laboratory of Metal Matrix Composites, School of Materials Science and Engineering, Shanghai Jiao Tong University Shanghai 200240 P. R. China
| | - Siyuan Liu
- State Key Laboratory of Metal Matrix Composites, School of Materials Science and Engineering, Shanghai Jiao Tong University Shanghai 200240 P. R. China
| | - Runlu Liu
- State Key Laboratory of Metal Matrix Composites, School of Materials Science and Engineering, Shanghai Jiao Tong University Shanghai 200240 P. R. China
| | - Jian Pan
- Particles and Catalysis Research Group, School of Chemical Engineering, University of New South Wales Sydney 2052 Australia
| | - Xin Li
- School of Environmental Science and Engineering, Shanghai Jiao Tong University Shanghai 200240 China
| | - Jianyu Zhang
- State Key Laboratory of Metal Matrix Composites, School of Materials Science and Engineering, Shanghai Jiao Tong University Shanghai 200240 P. R. China
| | - Xiaoxiao Zhang
- State Key Laboratory of Metal Matrix Composites, School of Materials Science and Engineering, Shanghai Jiao Tong University Shanghai 200240 P. R. China
| | - Yixin Zhao
- School of Environmental Science and Engineering, Shanghai Jiao Tong University Shanghai 200240 China
| | - Dawei Wang
- Particles and Catalysis Research Group, School of Chemical Engineering, University of New South Wales Sydney 2052 Australia
| | - Hengdao Quan
- School of Chemical Engineering and Environment, Beijing Institute of Technology Beijing 100081 China
| | - Shenmin Zhu
- State Key Laboratory of Metal Matrix Composites, School of Materials Science and Engineering, Shanghai Jiao Tong University Shanghai 200240 P. R. China
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Zhang X, Yang G, Meng J, Qin L, Ren M, Pan Y, Yang Y, Guo Y. Acetamide- or Formamide-Assisted In Situ Approach to Carbon-Rich or Nitrogen-Deficient Graphitic Carbon Nitride for Notably Enhanced Visible-Light Photocatalytic Redox Performance. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2023; 19:e2208012. [PMID: 36899451 DOI: 10.1002/smll.202208012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/21/2022] [Revised: 02/21/2023] [Indexed: 06/15/2023]
Abstract
Acetamide- or formamide-assisted in situ strategy is designed to synthesize carbon atom self-doped g-C3 N4 (AHCNx ) or nitrogen vacancy-modified g-C3 N4 (FHCNx ). Different from the direct copolymerization route that suffers from the problem of mismatched physical properties of acetamide (or formamide) with urea, the synthesis of AHCNx (or FHCNx ) starts from a crucial preorganization step of acetamide (or formamide) with urea via freeze drying-hydrothermal treatment so that the chemical structures as well as C-doping level in AHCNx and N-vacancy concentration in FHCNx can be precisely regulated. By using various structural characterization methods, well-defined AHCNx and FHCNx structures are proposed. At the optimal C-doping level in AHCNx or N-vacancy concentration in FHCNx , both AHCNx and FHCNx exhibit remarkably improved visible-light photocatalytic performance in oxidation of emerging organic pollutants (acetaminophen and methylparaben) and reduction of proton to H2 in comparison of unmodified g-C3 N4 . Combination of the experimental results with theoretical calculations, it is confirmed that AHCNx and FHCNx show different charge separation and transfer mechanisms, while the enhanced visible-light harvesting capacity and the localized charge distributions on HOMO and LUMO are responsible for this excellent photocatalytic redox performance of AHCNx and FHCNx .
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Affiliation(s)
- Xueyan Zhang
- School of Environment, Northeast Normal University, 2555 Jingyue Street, Changchun, 130117, P. R. China
| | - Guang Yang
- School of Environment, Northeast Normal University, 2555 Jingyue Street, Changchun, 130117, P. R. China
| | - Jiaqi Meng
- School of Environment, Northeast Normal University, 2555 Jingyue Street, Changchun, 130117, P. R. China
| | - Lang Qin
- School of Environment, Northeast Normal University, 2555 Jingyue Street, Changchun, 130117, P. R. China
| | - Miao Ren
- School of Environment, Northeast Normal University, 2555 Jingyue Street, Changchun, 130117, P. R. China
| | - Yue Pan
- School of Environment, Northeast Normal University, 2555 Jingyue Street, Changchun, 130117, P. R. China
| | - Yuxin Yang
- School of Environment, Northeast Normal University, 2555 Jingyue Street, Changchun, 130117, P. R. China
| | - Yihang Guo
- School of Environment, Northeast Normal University, 2555 Jingyue Street, Changchun, 130117, P. R. China
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Zou J, Liang G, Zhang F, Zhang S, Davey K, Guo Z. Revisiting the Role of Discharge Products in Li-CO 2 Batteries. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2023:e2210671. [PMID: 37171977 DOI: 10.1002/adma.202210671] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/17/2022] [Revised: 04/27/2023] [Indexed: 05/14/2023]
Abstract
Rechargeable lithium-carbon dioxide (Li-CO2 ) batteries are promising devices for CO2 recycling and energy storage. However, thermodynamically stable and electrically insulating discharge products (DPs) (e.g., Li2 CO3 ) deposited at cathodes require rigorous conditions for completed decomposition, resulting in large recharge polarization and poor battery reversibility. Although progress has been achieved in cathode design and electrolyte optimization, the significance of DPs is generally underestimated. Therefore, it is necessary to revisit the role of DPs in Li-CO2 batteries to boost overall battery performance. Here, a critical and systematic review of DPs in Li-CO2 batteries is reported for the first time. Fundamentals of reactions for formation and decomposition of DPs are appraised; impacts on battery performance including overpotential, capacity, and stability are demonstrated; and the necessity of discharge product management is highlighted. Practical in situ/operando technologies are assessed to characterize reaction intermediates and the corresponding DPs for mechanism investigation. Additionally, achievable control measures to boost the decomposition of DPs are evidenced to provide battery design principles and improve the battery performance. Findings from this work will deepen the understanding of electrochemistry of Li-CO2 batteries and promote practical applications.
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Affiliation(s)
- Jinshuo Zou
- School of Chemical Engineering and Advanced Materials, The University of Adelaide, Adelaide, SA, 5005, Australia
| | - Gemeng Liang
- School of Chemical Engineering and Advanced Materials, The University of Adelaide, Adelaide, SA, 5005, Australia
| | - Fangli Zhang
- School of Chemical Engineering and Advanced Materials, The University of Adelaide, Adelaide, SA, 5005, Australia
- Institute for Superconducting & Electronic Materials, University of Wollongong, Wollongong, NSW, 2522, Australia
| | - Shilin Zhang
- School of Chemical Engineering and Advanced Materials, The University of Adelaide, Adelaide, SA, 5005, Australia
| | - Kenneth Davey
- School of Chemical Engineering and Advanced Materials, The University of Adelaide, Adelaide, SA, 5005, Australia
| | - Zaiping Guo
- School of Chemical Engineering and Advanced Materials, The University of Adelaide, Adelaide, SA, 5005, Australia
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48
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Liu Q, Chen H, Su Y, Sun S, Zhao C, Zhang X, Gu Y, Li L. Enhanced crude oil degradation by remodeling of crude oil-contaminated soil microbial community structure using sodium alginate/graphene oxide/Bacillus C5 immobilized pellets. ENVIRONMENTAL RESEARCH 2023; 223:115465. [PMID: 36773642 DOI: 10.1016/j.envres.2023.115465] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/26/2022] [Revised: 02/02/2023] [Accepted: 02/08/2023] [Indexed: 06/18/2023]
Abstract
Bioaugmentation (BA) of oil-contaminated soil by immobilized microorganisms is considered to be a promising technology. However, available high-efficiency microbial agents remain very limited. Therefore, we prepared a SA/GO/C5 immobilized gel pellets by embedding the highly efficient crude oil degrading bacteria Bacillus C5 in the SA/GO composite material. The optimum preparation conditions of SA/GO/C5 immobilized gel pellets were: SA 3.0%, GO 25.0 μg/mL, embedding amount of C5 6%, water bath temperature of 50°C, CaCl2 solution concentration 3% and cross-linking time 20 h. BA experiments were carried out on crude oil contaminated soil to explore the removal effect of SA/GO/C5 immobilized pellets. The results showed that the SA/GO/C5 pellets exhibited excellent mechanical strength and specific surface area, which facilitated the attachment and growth of the Bacillus C5. Compared with free bacteria C5, the addition of SA/GO/C5 significantly promoted the removal of crude oil in soil, reaching 64.92% after 30 d, which was 2.1 times the removal rate of C5. The addition of SA/GO/C5 promoted the abundance of soil exogenous Bacillus C5 and indigenous crude oil degrading bacteria Alcanivorax and Marinobacter. In addition, the enrichment of hydrocarbon degradation-related functional abundance was predicted by PICRUSt2 in the SA/GO/C5 treatment group. This study demonstrated that SA/GO/C5 is an effective method for remediating crude oil-contaminated soil, providing a basis and option for immobilized microorganisms bioaugmentation to remediate organic contaminated soil.
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Affiliation(s)
- Qiyou Liu
- College of Chemistry and Chemical Engineering, China University of Petroleum (East China), Qingdao, 266580, PR China; State Key Laboratory of Petroleum Pollution Control, Qingdao, 266580, China.
| | - Hongxu Chen
- College of Chemistry and Chemical Engineering, China University of Petroleum (East China), Qingdao, 266580, PR China
| | - Yuhua Su
- College of Chemistry and Chemical Engineering, China University of Petroleum (East China), Qingdao, 266580, PR China
| | - Shuo Sun
- College of Chemistry and Chemical Engineering, China University of Petroleum (East China), Qingdao, 266580, PR China
| | - Chaocheng Zhao
- College of Chemistry and Chemical Engineering, China University of Petroleum (East China), Qingdao, 266580, PR China; State Key Laboratory of Petroleum Pollution Control, Qingdao, 266580, China
| | - Xiuxia Zhang
- College of Chemistry and Chemical Engineering, China University of Petroleum (East China), Qingdao, 266580, PR China; State Key Laboratory of Petroleum Pollution Control, Qingdao, 266580, China
| | - Yingying Gu
- College of Chemistry and Chemical Engineering, China University of Petroleum (East China), Qingdao, 266580, PR China; State Key Laboratory of Petroleum Pollution Control, Qingdao, 266580, China
| | - Lin Li
- College of Safety and Environmental Engineering, Shandong University of Science and Technology, Qingdao, 266590, PR China
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Wang P, Gou W, Jiang T, Zhao W, Ding K, Sheng H, Liu X, Xu Q, Fan Q. An interlayer spacing design approach for efficient sodium ion storage in N-doped MoS 2. NANOSCALE HORIZONS 2023; 8:473-482. [PMID: 36786825 DOI: 10.1039/d2nh00488g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
MoS2 in a graphene-like structure that possesses a large interlayer spacing is a promising anode material for sodium ion batteries (SIBs). However, its poor cycling stability and bad rate performance limit its wide application. In this work, we synthesized an N-doped rGO/MoS2 (ISE, interlayer spacing enlarged) composite based on an innovative strategy to serve as an anode material for SIBs. By inserting NH4+ into the interlayer of MoS2, the interlayer spacing of MoS2 was successfully expanded to 0.98 nm. Further use of N plasma treatment achieved the doping of N element. The results show that N-rGO/MoS2(ISE) exhibits a high specific capacity of 542 mA h g-1 after 300 cycles at 200 mA g-1. It is worth mentioning that the capacity retention rate reaches an ultra-large percentage of 97.13%, and the average decline percentage per cycle is close to 0.01%. Moreover, it also presents an excellent rate performance (477, 432, 377, 334 mA h g-1 at 200, 500, 1000, 2000 m A g-1 respectively). This work reveals a unique approach to fabricating promising anode materials and the electrochemical reaction mechanism for SIBs.
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Affiliation(s)
- Peng Wang
- School of Materials Science and Engineering, Jiulonghu Campus, Southeast University, Nanjing, 211189, People's Republic of China.
| | - Wenshan Gou
- School of Materials Science and Engineering, Jiulonghu Campus, Southeast University, Nanjing, 211189, People's Republic of China.
| | - Tian Jiang
- School of Chemistry and Chemical Engineering, Jiulonghu Campus, Southeast University, Nanjing, 211189, People's Republic of China
| | - Wenjing Zhao
- School of Physics, Jiulonghu Campus, Southeast University, Nanjing, 211189, People's Republic of China.
| | - Kunpeng Ding
- School of Chemistry and Chemical Engineering, Jiulonghu Campus, Southeast University, Nanjing, 211189, People's Republic of China
| | - Huanxing Sheng
- School of Materials Science and Engineering, Jiulonghu Campus, Southeast University, Nanjing, 211189, People's Republic of China.
| | - Xin Liu
- Weihai Institute of Marine Information Science and technology, Shandong Jiaotong University, 1508 Hexing Road, Weihai, 264300, China
| | - Qingyu Xu
- School of Physics, Jiulonghu Campus, Southeast University, Nanjing, 211189, People's Republic of China.
| | - Qi Fan
- School of Materials Science and Engineering, Jiulonghu Campus, Southeast University, Nanjing, 211189, People's Republic of China.
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Yang Z, Wang J. Enhanced Photocatalytic Degradation of Emerging Contaminants Using Ti 3C 2T x MXene-Supported CdS Quantum Dots. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2023; 39:4179-4189. [PMID: 36888917 DOI: 10.1021/acs.langmuir.3c00223] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
The synthesis of efficient and stable catalysts for photocatalytic reactions is still a challenge. In this study, a new photocatalyst composed of two-dimensional titanium carbide (Ti3C2Tx) and CdS quantum dots (QDs) was fabricated, in which CdS QDs were intimately anchored on the Ti3C2Tx sheet surface. Due to the specific interface characteristics of CdS QDs/Ti3C2Tx, Ti3C2Tx can considerably facilitate the generation of photogenerated charge carriers, their separation, and their transfer from CdS. As expected, the obtained CdS QDs/Ti3C2Tx exhibit outstanding photocatalytic performance for carbamazepine (CBZ) degradation. Moreover, the quenching experiments demonstrated that superoxide radicals (•O2-), H2O2, 1O2, and •OH are the reactive species involved in CBZ degradation, while •O2- made a major contribution. In addition, the sunlight-driven CdS QDs/Ti3C2Tx photocatalytic system is widely suitable for the elimination of different emerging pollutants in various water matrices, suggesting its potential practical environmental applications.
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Affiliation(s)
- Zhao Yang
- Laboratory of Environmental Technology, INET, Tsinghua University, Beijing 100084, P. R. China
| | - Jianlong Wang
- Laboratory of Environmental Technology, INET, Tsinghua University, Beijing 100084, P. R. China
- Beijing Key Laboratory of Radioactive Wastes Treatment, Tsinghua University, Beijing 100084, P. R. China
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