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Ren Z, Li Y, Ren Q, Zhang X, Fan X, Liu X, Fan J, Shen S, Tang Z, Xue Y. Unveiling the Role of Sulfur Vacancies in Enhanced Photocatalytic Activity of Hybrids Photocatalysts. NANOMATERIALS (BASEL, SWITZERLAND) 2024; 14:1009. [PMID: 38921884 PMCID: PMC11207092 DOI: 10.3390/nano14121009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/19/2024] [Revised: 05/26/2024] [Accepted: 05/30/2024] [Indexed: 06/27/2024]
Abstract
Photocatalysis represents a sustainable strategy for addressing energy shortages and global warming. The main challenges in the photocatalytic process include limited light absorption, rapid recombination of photo-induced carriers, and poor surface catalytic activity for reactant molecules. Defect engineering in photocatalysts has been proven to be an efficient approach for improving solar-to-chemical energy conversion. Sulfur vacancies can adjust the electron structure, act as electron reservoirs, and provide abundant adsorption and activate sites, leading to enhanced photocatalytic activity. In this work, we aim to elucidate the role of sulfur vacancies in photocatalytic reactions and provide valuable insights for engineering high-efficiency photocatalysts with abundant sulfur vacancies in the future. First, we delve into the fundamental understanding of photocatalysis. Subsequently, various strategies for fabricating sulfur vacancies in photocatalysts are summarized, along with the corresponding characterization techniques. More importantly, the enhanced photocatalytic mechanism, focusing on three key factors, including electron structure, charge transfer, and the surface catalytic reaction, is discussed in detail. Finally, the future opportunities and challenges in sulfur vacancy engineering for photocatalysis are identified.
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Affiliation(s)
- Zhenxing Ren
- Institute of Applied Chemistry, Shanxi University, Taiyuan 030006, China; (Z.R.)
| | - Yang Li
- Institute of Applied Chemistry, Shanxi University, Taiyuan 030006, China; (Z.R.)
| | - Qiuyu Ren
- Institute of Applied Chemistry, Shanxi University, Taiyuan 030006, China; (Z.R.)
| | - Xiaojie Zhang
- National & Local Joint Engineering Research Center for Mineral Salt Deep Utilization, Huaiyin Institute of Technology, Huaian 223003, China
| | - Xiaofan Fan
- School of Materials and Chemistry, University of Shanghai for Science and Technology, Shanghai 200093, China (J.F.)
| | - Xinjuan Liu
- School of Materials and Chemistry, University of Shanghai for Science and Technology, Shanghai 200093, China (J.F.)
| | - Jinchen Fan
- School of Materials and Chemistry, University of Shanghai for Science and Technology, Shanghai 200093, China (J.F.)
| | - Shuling Shen
- School of Materials and Chemistry, University of Shanghai for Science and Technology, Shanghai 200093, China (J.F.)
| | - Zhihong Tang
- School of Materials and Chemistry, University of Shanghai for Science and Technology, Shanghai 200093, China (J.F.)
| | - Yuhua Xue
- School of Materials and Chemistry, University of Shanghai for Science and Technology, Shanghai 200093, China (J.F.)
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Jiang Y, Sun H, Guo J, Liang Y, Qin P, Yang Y, Luo L, Leng L, Gong X, Wu Z. Vacancy Engineering in 2D Transition Metal Chalcogenide Photocatalyst: Structure Modulation, Function and Synergy Application. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024:e2310396. [PMID: 38607299 DOI: 10.1002/smll.202310396] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/14/2023] [Revised: 03/08/2024] [Indexed: 04/13/2024]
Abstract
Transition metal chalcogenides (TMCs) are widely used in photocatalytic fields such as hydrogen evolution, nitrogen fixation, and pollutant degradation due to their suitable bandgaps, tunable electronic and optical properties, and strong reducing ability. The unique 2D malleability structure provides a pre-designed platform for customizable structures. The introduction of vacancy engineering makes up for the shortcomings of photocorrosion and limited light response and provides the greatest support for TMCs in terms of kinetics and thermodynamics in photocatalysis. This work reviews the effect of vacancy engineering on photocatalytic performance based on 2D semiconductor TMCs. The characteristics of vacancy introduction strategies are summarized, and the development of photocatalysis of vacancy engineering TMCs materials in energy conversion, degradation, and biological applications is reviewed. The contribution of vacancies in the optical range and charge transfer kinetics is also discussed from the perspective of structure manipulation. Vacancy engineering not only controls and optimizes the structure of the TMCs, but also improves the optical properties, charge transfer, and surface properties. The synergies between TMCs vacancy engineering and atomic doping, other vacancies, and heterojunction composite techniques are discussed in detail, followed by a summary of current trends and potential for expansion.
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Affiliation(s)
- Yi Jiang
- Key Laboratory for Rural Ecosystem Health in the Dongting Lake Area of Hunan Province, College of Environment and Ecology, Hunan Agricultural University, Changsha, 410128, P. R. China
| | - Haibo Sun
- Key Laboratory for Rural Ecosystem Health in the Dongting Lake Area of Hunan Province, College of Environment and Ecology, Hunan Agricultural University, Changsha, 410128, P. R. China
| | - Jiayin Guo
- School of Resources and Environment, Hunan University of Technology and Business, Changsha, 410205, P. R. China
| | - Yunshan Liang
- Key Laboratory for Rural Ecosystem Health in the Dongting Lake Area of Hunan Province, College of Environment and Ecology, Hunan Agricultural University, Changsha, 410128, P. R. China
| | - Pufeng Qin
- Key Laboratory for Rural Ecosystem Health in the Dongting Lake Area of Hunan Province, College of Environment and Ecology, Hunan Agricultural University, Changsha, 410128, P. R. China
| | - Yuan Yang
- Key Laboratory for Rural Ecosystem Health in the Dongting Lake Area of Hunan Province, College of Environment and Ecology, Hunan Agricultural University, Changsha, 410128, P. R. China
| | - Lin Luo
- Key Laboratory for Rural Ecosystem Health in the Dongting Lake Area of Hunan Province, College of Environment and Ecology, Hunan Agricultural University, Changsha, 410128, P. R. China
| | - Lijian Leng
- School of Energy Science and Engineering, Central South University, Changsha, 410083, P. R. China
| | - Xiaomin Gong
- Key Laboratory for Rural Ecosystem Health in the Dongting Lake Area of Hunan Province, College of Environment and Ecology, Hunan Agricultural University, Changsha, 410128, P. R. China
| | - Zhibin Wu
- Key Laboratory for Rural Ecosystem Health in the Dongting Lake Area of Hunan Province, College of Environment and Ecology, Hunan Agricultural University, Changsha, 410128, P. R. China
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Pan J, Wang D, Wu D, Cao J, Fang X, Zhao C, Zeng Z, Zhang B, Liu D, Liu S, Liu G, Jiao S, Xu Z, Zhao L, Wang J. Rational Design of Three Dimensional Hollow Heterojunctions for Efficient Photocatalytic Hydrogen Evolution Applications. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2024; 11:e2309293. [PMID: 38258489 PMCID: PMC10987164 DOI: 10.1002/advs.202309293] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/30/2023] [Indexed: 01/24/2024]
Abstract
The efficiency of photocatalytic hydrogen evolution is currently limited by poor light adsorption, rapid recombination of photogenerated carriers, and ineffective surface reaction rate. Although heterojunctions with innovative morphologies and structures can strengthen built-in electric fields and maximize the separation of photogenerated charges. However, how to rational design of novel multidimensional structures to simultaneously improve the above three bottleneck problems is still a research imperative. Herein, a unique Cu2O─S@graphene oxide (GO)@Zn0.67Cd0.33S Three dimensional (3D) hollow heterostructure is designed and synthesized, which greatly extends the carrier lifetime and effectively promotes the separation of photogenerated charges. The H2 production rate reached 48.5 mmol g-1 h-1 under visible light after loading Ni2+ on the heterojunction surface, which is 97 times higher than that of pure Zn0.67Cd0.33S nanospheres. Furthermore, the H2 production rate can reach 77.3 mmol g-1 h-1 without cooling, verifying the effectiveness of the photothermal effect. Meanwhile, in situ characterization and density flooding theory calculations reveal the efficient charge transfer at the p-n 3D hollow heterojunction interface. This study not only reveals the detailed mechanism of photocatalytic hydrogen evolution in depth but also rationalizes the construction of superior 3D hollow heterojunctions, thus providing a universal strategy for the materials-by-design of high-performance heterojunctions.
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Affiliation(s)
- Jingwen Pan
- School of Materials Science and EngineeringHarbin Institute of TechnologyHarbin150001China
| | - Dongbo Wang
- School of Materials Science and EngineeringHarbin Institute of TechnologyHarbin150001China
| | - Donghai Wu
- Henan Key Laboratory of Nanocomposites and ApplicationsHuanghe Science and Technology CollegeInstitute of Nanostructured Functional MaterialsZhengzhou450006China
| | - Jiamu Cao
- School of AstronauticsHarbin Institute of TechnologyHarbin150001China
| | - Xuan Fang
- State Key Lab High Power Semicond LasersChangchun University Science and Technology, Sch SciChangchun130022China
| | - Chenchen Zhao
- School of Materials Science and EngineeringHarbin Institute of TechnologyHarbin150001China
| | - Zhi Zeng
- School of Materials Science and EngineeringHarbin Institute of TechnologyHarbin150001China
| | - Bingke Zhang
- School of Materials Science and EngineeringHarbin Institute of TechnologyHarbin150001China
| | - Donghao Liu
- School of Materials Science and EngineeringHarbin Institute of TechnologyHarbin150001China
| | - Sihang Liu
- School of Materials Science and EngineeringHarbin Institute of TechnologyHarbin150001China
| | - Gang Liu
- Center for High Pressure Science and Technology Advanced ResearchShanghai201203China
| | - Shujie Jiao
- School of Materials Science and EngineeringHarbin Institute of TechnologyHarbin150001China
| | - Zhikun Xu
- Guangdong University of Petrochemical TechnologyMaoming525000China
| | - Liancheng Zhao
- School of Materials Science and EngineeringHarbin Institute of TechnologyHarbin150001China
| | - Jinzhong Wang
- School of Materials Science and EngineeringHarbin Institute of TechnologyHarbin150001China
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Yang L, Wang Y, Peng Y. Facile synthesis of Zn 0.5Cd 0.5S nanosheets with tunable S vacancies for highly efficient photocatalytic hydrogen evolution. NANOSCALE 2024; 16:5267-5279. [PMID: 38369863 DOI: 10.1039/d3nr06419k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/20/2024]
Abstract
In order to effectively improve the separation efficiency of photogenerated charge carriers and thus the photocatalytic activity, in this work, porous Zn0.5Cd0.5S nanosheets with a controlled amount of S vacancies were prepared by a multistep chemical transformation strategy using the inorganic-organic hybrid ZnS-ethylenediamine (denoted as ZnS(en)0.5) as a hard template. The amount of S vacancies and the morphology of the Zn0.5Cd0.5S nanostructures were tailored by adjusting the hydrolysis time. Furthermore, we report the observation of S vacancies in porous Zn0.5Cd0.5S nanosheets at the atomic level using spherical aberration-corrected (Cs-aberrated) transmission electron microscopy (Cs-corrected-TEM). The results revealed that Zn0.5Cd0.5S nanosheets with S vacancies absorb more visible light and generate more electron-hole carriers due to their porous nanosheet structure. At the same time, sulfur vacancies are introduced into the Zn0.5Cd0.5S nanosheets to capture the electrons generated by the light and further extend the lifetime of the carriers. As expected, the photocatalytic activity of Zn0.5Cd0.5S nanosheets prepared by 4 h hydrolysis is 20.5 times higher than that of Zn0.5Cd0.5S(en)x intermediates. Moreover, Zn0.5Cd0.5S-4h showed excellent cycling stability. This work provides a new strategy for the optimization of Zn0.5Cd0.5S photocatalysts to improve photocatalytic hydrogen evolution.
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Affiliation(s)
- Linfen Yang
- Department of Materials Science, School of Physical Science and Technology, Lanzhou University, Lanzhou, 730000, China.
- School of Materials and Energy, or Electron Microscopy Centre of Lanzhou University, Lanzhou, 730000, China
| | - Yuhua Wang
- School of Materials and Energy, Lanzhou University, Lanzhou, 730000, China.
| | - Yong Peng
- Department of Materials Science, School of Physical Science and Technology, Lanzhou University, Lanzhou, 730000, China.
- School of Materials and Energy, or Electron Microscopy Centre of Lanzhou University, Lanzhou, 730000, China
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Zhai X, Jiang Z, Zhang Y, Sun J, Ju P, Jiang Q, Wang Y, Duan J, Hou B. Ultrasound assisted electrodeposition of photocatalytic antibacterial MoS 2-Zn coatings controlled by sodium dodecyl sulfate. ULTRASONICS SONOCHEMISTRY 2024; 102:106749. [PMID: 38217907 PMCID: PMC10825642 DOI: 10.1016/j.ultsonch.2023.106749] [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: 07/30/2023] [Revised: 12/24/2023] [Accepted: 12/28/2023] [Indexed: 01/15/2024]
Abstract
Photocatalytic MoS2 with visible light response is considered as a promising bactericidal material owing to its non-toxicity and high antibacterial efficiency. However, photocatalysts always exist as powder, so it is difficult to settle photocatalysts on the metal surface, which limits their application in aqueous environments. To solve this problem, ultrasound and sodium dodecyl sulfate (SDS) were introduced into the co-deposition process of MoS2 and zinc matrix, so that novel MoS2-Zn coatings were obtained. In this process, ultrasound and SDS strongly promoted the dispersion and adsorption of MoS2 on the co-depositing surfaces. Then MoS2 were proved to be composited into the Zn matrix with effective structures, and the addition of SDS effectively increased the loading content of MoS2 in the MoS2-Zn coatings. Besides, the antibacterial performance of the MoS2-Zn coatings was evaluated with three typical fouling bacteria E.coli, S.aureus and B.wiedmannii. The MoS2-Zn coating showed high and broad-spectrum antibacterial properties with over 98 % inhibition rate against these three bacteria. Furthermore, it is proved that the MoS2-Zn coatings generated superoxide (·O2-) and hydroxyl radicals (·OH) under visible light, which played the dominant and subordinate roles in the antibacterial process, respectively. The MoS2-Zn coatings also showed high antibacterial stability after four "light-dark" cycles. According to the results of the attached bacteria, the MoS2-Zn coatings were considered to effectively repel the living pelagic bacteria instead of killing the attached ones, which was highly environmentally friendly. The obtained MoS2-Zn coatings were considered promising in biofilm inhibiting and marine antifouling fields.
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Affiliation(s)
- Xiaofan Zhai
- CAS Key Laboratory of Marine Environmental Corrosion and Bio-fouling, Institute of Oceanology, Chinese Academy of Sciences, No.7 Nanhai Road, Qingdao 266071, PR China; Institute of Marine Corrosion Protection, Guangxi Key Laboratory of Marine Environmental Science, Guangxi Academy of Sciences, Nanning 530007, PR China; Laoshan Laboratory, No. 168 Wenhai Road, Qingdao 266071, China; Sanya Institute of Ocean Eco-Environmental Engineering, Zhenzhou Road, Sanya 572000, PR China
| | - Ze Jiang
- CAS Key Laboratory of Marine Environmental Corrosion and Bio-fouling, Institute of Oceanology, Chinese Academy of Sciences, No.7 Nanhai Road, Qingdao 266071, PR China; Institute of Marine Corrosion Protection, Guangxi Key Laboratory of Marine Environmental Science, Guangxi Academy of Sciences, Nanning 530007, PR China; School of Mechanical Engineering, Qingdao University of Technology, Qingdao, Shandong 266520, PR China
| | - Yu Zhang
- CAS Key Laboratory of Marine Environmental Corrosion and Bio-fouling, Institute of Oceanology, Chinese Academy of Sciences, No.7 Nanhai Road, Qingdao 266071, PR China; Laoshan Laboratory, No. 168 Wenhai Road, Qingdao 266071, China
| | - Jiawen Sun
- CAS Key Laboratory of Marine Environmental Corrosion and Bio-fouling, Institute of Oceanology, Chinese Academy of Sciences, No.7 Nanhai Road, Qingdao 266071, PR China; Laoshan Laboratory, No. 168 Wenhai Road, Qingdao 266071, China
| | - Peng Ju
- Key Laboratory of Marine Eco-Environmental Science and Technology, Marine Bioresource and Environment Research Center, First Institute of Oceanography, Ministry of Natural Resources, No. 6 Xianxialing Road, Qingdao 266061, PR China.
| | - Quantong Jiang
- CAS Key Laboratory of Marine Environmental Corrosion and Bio-fouling, Institute of Oceanology, Chinese Academy of Sciences, No.7 Nanhai Road, Qingdao 266071, PR China; Institute of Marine Corrosion Protection, Guangxi Key Laboratory of Marine Environmental Science, Guangxi Academy of Sciences, Nanning 530007, PR China; Laoshan Laboratory, No. 168 Wenhai Road, Qingdao 266071, China; Sanya Institute of Ocean Eco-Environmental Engineering, Zhenzhou Road, Sanya 572000, PR China
| | - Youqiang Wang
- School of Mechanical Engineering, Qingdao University of Technology, Qingdao, Shandong 266520, PR China
| | - Jizhou Duan
- CAS Key Laboratory of Marine Environmental Corrosion and Bio-fouling, Institute of Oceanology, Chinese Academy of Sciences, No.7 Nanhai Road, Qingdao 266071, PR China; Institute of Marine Corrosion Protection, Guangxi Key Laboratory of Marine Environmental Science, Guangxi Academy of Sciences, Nanning 530007, PR China; Laoshan Laboratory, No. 168 Wenhai Road, Qingdao 266071, China.
| | - Baorong Hou
- CAS Key Laboratory of Marine Environmental Corrosion and Bio-fouling, Institute of Oceanology, Chinese Academy of Sciences, No.7 Nanhai Road, Qingdao 266071, PR China; Institute of Marine Corrosion Protection, Guangxi Key Laboratory of Marine Environmental Science, Guangxi Academy of Sciences, Nanning 530007, PR China; Laoshan Laboratory, No. 168 Wenhai Road, Qingdao 266071, China; Sanya Institute of Ocean Eco-Environmental Engineering, Zhenzhou Road, Sanya 572000, PR China
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6
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Long Z, Yang G, Shao R, Chen Z, Liu Y, Liu R, Zhong H. The Strain Effects and Interfacial Defects of Large ZnSe/ZnS Core/Shell Nanocrystals. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024; 20:e2306602. [PMID: 37705120 DOI: 10.1002/smll.202306602] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/02/2023] [Indexed: 09/15/2023]
Abstract
The shell growth of large ZnSe/ZnS nanocrystals( is of great importance in the pursuit of pure-blue emitters for display applications, however, suffers from the challenges of spectral blue-shifts and reduced photoluminescence quantum yields. In this work, the ZnS shell growth on different-sized ZnSe cores is investigated. By controlling the reactivity of Zn and S precursors, the ZnS shell growth can be tuned from defect-related strain-released to defect-free strained mode, corresponding to the blue- and red-shifts of resultant nanocrystals respectively. The shape of strain-released ZnSe/ZnS nanocrystals can be kept nearly spherical during the shell growth, while the shape of strained nanocrystals evolutes from spherical into island-like after the critical thickness. Furthermore, the strain between ZnSe core and ZnS shell can convert the band alignment from type-I into type-II core/shell structure, resulting in red-shifts and improved quantum yield. By correlating the strain effects with interfacial defects, a strain-released shell growth model is proposed to obtain large ZnSe/ZnS nanocrystals with isotropic shell morphology.
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Affiliation(s)
- Zhiwei Long
- National Engineering Research Center for Rare Earth, GRIREM Advanced Materials Co. Ltd., General Research Institute for Nonferrous Metals, Beijing, 100088, China
- MIIT Key Laboratory for Low-dimensional Quantum Structure and Devices, School of Materials Science & Engineering, Beijing Institute of Technology, Beijing, 100081, China
| | - Gaoling Yang
- MIIT Key Laboratory for Low-dimensional Quantum Structure and Devices, School of Optics and Photonics, Beijing Institute of Technology, Beijing, 100081, China
| | - Ruiwen Shao
- Beijing Advanced Innovation Center for Intelligent Robots and Systems and School of Medical Technology, Beijing Institute of Technology, Beijing, 100081, China
| | - Zhuo Chen
- BOE Technology Group Co., Ltd, Beijing, 100176, China
| | - Yang Liu
- BOE Technology Group Co., Ltd, Beijing, 100176, China
| | - Ronghui Liu
- National Engineering Research Center for Rare Earth, GRIREM Advanced Materials Co. Ltd., General Research Institute for Nonferrous Metals, Beijing, 100088, China
| | - Haizheng Zhong
- MIIT Key Laboratory for Low-dimensional Quantum Structure and Devices, School of Materials Science & Engineering, Beijing Institute of Technology, Beijing, 100081, China
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Jubeer EM, Manthrammel MA, Subha PA, Shkir M, Biju KP, AlFaify SA. Defect engineering for enhanced optical and photocatalytic properties of ZnS nanoparticles synthesized by hydrothermal method. Sci Rep 2023; 13:16820. [PMID: 37798379 PMCID: PMC10556056 DOI: 10.1038/s41598-023-43735-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2023] [Accepted: 09/27/2023] [Indexed: 10/07/2023] Open
Abstract
Defect engineering is a promising method for improving light harvesting in photocatalytic materials like Zinc sulphide (ZnS). By altering the S/Zn molar ratio during hydrothermal processes, Zn and S defects are successfully introduced into the ZnS crystal. The band structures can be modified by adding defects to the crystal structure of ZnS samples. During the treatment process, defects are formed on the surface. XRD and Raman studies are used for the confirmation of the crystallinity and phase formation of the samples. Using an X-ray peak pattern assessment based on the Debye Scherer model, the Williamson-Hall model, and the size strain plot, it was possible to study the influence of crystal defect on the structural characteristics of ZnS nanoparticles. The band gap (Eg) values were estimated using UV-Vis diffuse spectroscopy (UV-Vis DRS) and found that the Eg is reduced from 3.28 to 3.49 eV by altering the S/Zn molar ratio. Photoluminescence study (PL) shows these ZnS nanoparticles emit violet and blue radiations. In keeping with the results of XRD, TEM demonstrated the nanoscale of the prepared samples and exhibited a small agglomeration of homogenous nanoparticles. Scanning electron microscopy (SEM) was used to examine the surface morphology of the ZnS particles. Inductively Coupled Plasma Optical Emission Spectroscopy (ICP-OES) and X-ray photoelectron spectroscopy (XPS) were used to evaluate and validate the elemental composition. XPS results indicate the presence of defects on the prepared ZnS nanoparticles. For the investigation of vacancy-dependent catalytic activity under exposure to visible light, defective ZnS with different quantities of Zn and S voids are used as catalysts. The lowest S/Zn sample, ZnS0.67 and the highest S/Zn sample, ZnS3, show superior photocatalytic activity.
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Affiliation(s)
- E Muhammed Jubeer
- Department of Physics, Farook College, University Of Calicut, Kozhikode, 673632, Kerala, India
| | - M Aslam Manthrammel
- Department of Physics, Faculty of Science, King Khalid University, P.O. Box-9004, 61413, Abha, Saudi Arabia.
| | - P A Subha
- Department of Physics, Farook College, University Of Calicut, Kozhikode, 673632, Kerala, India
| | - Mohd Shkir
- Department of Physics, Faculty of Science, King Khalid University, P.O. Box-9004, 61413, Abha, Saudi Arabia.
| | - K P Biju
- Department of Physics, Govt. Arts and Science College, Kozhikode, Calicut, 673018, Kerala, India
| | - S A AlFaify
- Department of Physics, Faculty of Science, King Khalid University, P.O. Box-9004, 61413, Abha, Saudi Arabia
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Janani B, Balakrishnaraja R, Elgorban AM, Bahkali AH, Varma RS, Syed A, Khan SS. Eco-friendly cubic-ZnS coupled Cu 7S 4 spines on chitosan matrix: Unravelling defect-engineered nanoplatform for the photodegradation of p-chlorophenol. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2023; 326:116615. [PMID: 36395641 DOI: 10.1016/j.jenvman.2022.116615] [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: 04/13/2022] [Revised: 10/08/2022] [Accepted: 10/22/2022] [Indexed: 06/16/2023]
Abstract
Novel ZnS-Cu7S4 nanohybrid supported on chitosan matrix, as an ideal photocatalyst, was fabricated by the sonochemical method wherein high-resolution transmission electron microscopy (HRTEM) and X-ray powder diffraction (XRD) analysis confirmed the co-existence of both ZnS and Cu7S4; presence of vacancy sites in ZnS was verified by electron paramagnetic resonance (EPR) analysis and their introduction could promote two-photon excitation facilitated visible light response and charge transport/separation. The type II interface is formed in the ZnS-Cu7S4/Chitosan heterojunction owing to interstitial states that promote charge separation. The ZnS-Cu7S4/Chitosan was used for the photodegradation of a pharmaceutical pollutant, p-chlorophenol (PCP); over 98.8% of PCP photodegradation was achieved under visible-light irradiation where the ensued ·O2- and ·OH serve a key role in the photodegradation of PCP. In vitro cytotoxicity studies substantiated that the ZnS-Cu7S4/Chitosan is nontoxic to the ecosystem and human beings and endowed with promising photodegradation properties and accessibility via an environmentally friendly design, bodes well for its potential remediation applications.
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Affiliation(s)
- B Janani
- Nanobiotechnology Laboratory, Department of Biotechnology, Bannari Amman Institute of Technology, Sathyamangalam, Tamil Nadu, India
| | - R Balakrishnaraja
- Nanobiotechnology Laboratory, Department of Biotechnology, Bannari Amman Institute of Technology, Sathyamangalam, Tamil Nadu, India
| | - Abdalla M Elgorban
- Botany and Microbiology Department, College of Science, King Saud University, P.O. Box 2455, Riyadh, 11451, Saudi Arabia
| | - Ali H Bahkali
- Botany and Microbiology Department, College of Science, King Saud University, P.O. Box 2455, Riyadh, 11451, Saudi Arabia
| | - Rajender S Varma
- Regional Centre of Advanced Technologies and Materials, Czech Advanced Technology and Research Institute, Palacky University in Olomouc, Šlechtitelů 27, 783 71, Olomouc, Czech Republic
| | - Asad Syed
- Botany and Microbiology Department, College of Science, King Saud University, P.O. Box 2455, Riyadh, 11451, Saudi Arabia
| | - S Sudheer Khan
- Department of Oral Medicine and Radiology, Saveetha Dental College and Hospitals, Saveetha Institute of Medical and Technical Sciences (SIMATS), Chennai, 600077, Tamil Nadu, India.
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9
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Chen C, Zhao Y, Lei T, Yang D, Zhou Y, Zeng J, Xie R, Hu W, Dong F. Photocatalytic mechanism conversion of titanium dioxide induced via surface interface coordination. CHEMOSPHERE 2022; 309:136745. [PMID: 36209860 DOI: 10.1016/j.chemosphere.2022.136745] [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: 07/23/2022] [Revised: 09/30/2022] [Accepted: 10/01/2022] [Indexed: 06/16/2023]
Abstract
Photocatalytic removal of organic pollutants is a promising pollution treatment technology from the aspect of carbon neutrality. The complex diversity of actual wastewater components, as opposed to single-component systems, can significantly affect photocatalytic mechanisms. In this study, complex pollutant systems were created using various coordinating agents, and the effects of P25 on the photocatalytic removal of methyl orange (MO) in these systems and corresponding photocatalytic mechanism were investigated. The results show that photocatalytic removal of MO by P25 using ligands is significantly more efficient, especial removal of MO by the EDTA-P25 (P-E2.5) coordination system resulted dramatically improved MO removal (97.4% versus 12.3% achieved by pure P25 after 15 min), with the reaction rate improved 23.8-fold. Theoretical calculations show that the effective coordination bonds formed by the coordinating agent and Ti atoms reduce the adsorption energy of P25 for MO. In addition, introduction of the coordinating agent EDTA reduces the transition state energy during the MO degradation process and greatly accelerates the reaction rate, and the conduction band position of the EDTA-P25 coordination system shifts to a more negative potential, which induces to the generation of •O2- for effective MO degradation.
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Affiliation(s)
- Cheng Chen
- Fundamental Science on Nuclear Wastes and Environmental Safety Laboratory, Southwest University of Science and Technology, Mianyang, 621010, PR China; School of Materials and Chemistry, Southwest University of Science and Technology, Mianyang, 621010, PR China; State Key Laboratory of Environment-friendly Energy Materials, Southwest University of Science and Technology, Mianyang, 621010, PR China
| | - Yu Zhao
- Fundamental Science on Nuclear Wastes and Environmental Safety Laboratory, Southwest University of Science and Technology, Mianyang, 621010, PR China; School of Materials and Chemistry, Southwest University of Science and Technology, Mianyang, 621010, PR China; State Key Laboratory of Environment-friendly Energy Materials, Southwest University of Science and Technology, Mianyang, 621010, PR China
| | - Ting Lei
- Fundamental Science on Nuclear Wastes and Environmental Safety Laboratory, Southwest University of Science and Technology, Mianyang, 621010, PR China; School of Materials and Chemistry, Southwest University of Science and Technology, Mianyang, 621010, PR China; State Key Laboratory of Environment-friendly Energy Materials, Southwest University of Science and Technology, Mianyang, 621010, PR China
| | - Dingming Yang
- School of Materials and Chemistry, Southwest University of Science and Technology, Mianyang, 621010, PR China; State Key Laboratory of Environment-friendly Energy Materials, Southwest University of Science and Technology, Mianyang, 621010, PR China
| | - Yanfang Zhou
- School of Materials and Chemistry, Southwest University of Science and Technology, Mianyang, 621010, PR China; State Key Laboratory of Environment-friendly Energy Materials, Southwest University of Science and Technology, Mianyang, 621010, PR China
| | - Jiawei Zeng
- National Health Commission Key Laboratory of Nuclear Technology Medical Transformation, Mianyang Central Hospital, Mianyang, 621010, PR China
| | - Ruzhen Xie
- College of Architecture and Environment, Sichuan University, Chengdu, 610065, PR China
| | - Wenyuan Hu
- Fundamental Science on Nuclear Wastes and Environmental Safety Laboratory, Southwest University of Science and Technology, Mianyang, 621010, PR China; School of Materials and Chemistry, Southwest University of Science and Technology, Mianyang, 621010, PR China; State Key Laboratory of Environment-friendly Energy Materials, Southwest University of Science and Technology, Mianyang, 621010, PR China.
| | - Faqin Dong
- Key Laboratory of Solid Waste Treatment and Resource Recycling, Ministry of Education of China, Mianyang, 621010, PR China.
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10
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NiTi-layered double hydroxide as an efficient photocatalytic fungicide of Aspergillus fumigatus spores: Capacity and mechanism. J SOLID STATE CHEM 2022. [DOI: 10.1016/j.jssc.2022.123703] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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11
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Shi J, Yang L, Zhang J, Wang Z, Zhu W, Wang Y, Zou Z. Dual MOF‐Derived MoS
2
/CdS Photocatalysts with Rich Sulfur Vacancies for Efficient Hydrogen Evolution Reaction. Chemistry 2022; 28:e202202019. [DOI: 10.1002/chem.202202019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2022] [Indexed: 11/12/2022]
Affiliation(s)
- Jinyan Shi
- School of Chemistry and Chemical Engineering Nanjing University 163 Xianlin Avenue, Qixia District Nanjing 210023 P. R. China
- Eco-materials and Renewable Energy Research Center (ERERC) National Laboratory of Solid State Microstructures Kunshan Innovation Institute of Nanjing University Jiangsu Key Laboratory for Nanotechnology Nanjing University 22 Hankou Road, Gulou District Nanjing 210093 P. R. China
| | - Le Yang
- School of Chemistry and Chemical Engineering Nanjing University 163 Xianlin Avenue, Qixia District Nanjing 210023 P. R. China
- Eco-materials and Renewable Energy Research Center (ERERC) National Laboratory of Solid State Microstructures Kunshan Innovation Institute of Nanjing University Jiangsu Key Laboratory for Nanotechnology Nanjing University 22 Hankou Road, Gulou District Nanjing 210093 P. R. China
| | - Jie Zhang
- School of Chemistry and Chemical Engineering Nanjing University 163 Xianlin Avenue, Qixia District Nanjing 210023 P. R. China
- Eco-materials and Renewable Energy Research Center (ERERC) National Laboratory of Solid State Microstructures Kunshan Innovation Institute of Nanjing University Jiangsu Key Laboratory for Nanotechnology Nanjing University 22 Hankou Road, Gulou District Nanjing 210093 P. R. China
| | - Zejin Wang
- School of Chemistry and Chemical Engineering Nanjing University 163 Xianlin Avenue, Qixia District Nanjing 210023 P. R. China
- Eco-materials and Renewable Energy Research Center (ERERC) National Laboratory of Solid State Microstructures Kunshan Innovation Institute of Nanjing University Jiangsu Key Laboratory for Nanotechnology Nanjing University 22 Hankou Road, Gulou District Nanjing 210093 P. R. China
| | - Wenbo Zhu
- School of Chemistry and Chemical Engineering Nanjing University 163 Xianlin Avenue, Qixia District Nanjing 210023 P. R. China
- Eco-materials and Renewable Energy Research Center (ERERC) National Laboratory of Solid State Microstructures Kunshan Innovation Institute of Nanjing University Jiangsu Key Laboratory for Nanotechnology Nanjing University 22 Hankou Road, Gulou District Nanjing 210093 P. R. China
| | - Ying Wang
- School of Chemistry and Chemical Engineering Nanjing University 163 Xianlin Avenue, Qixia District Nanjing 210023 P. R. China
- Eco-materials and Renewable Energy Research Center (ERERC) National Laboratory of Solid State Microstructures Kunshan Innovation Institute of Nanjing University Jiangsu Key Laboratory for Nanotechnology Nanjing University 22 Hankou Road, Gulou District Nanjing 210093 P. R. China
| | - Zhigang Zou
- Eco-materials and Renewable Energy Research Center (ERERC) National Laboratory of Solid State Microstructures Kunshan Innovation Institute of Nanjing University Jiangsu Key Laboratory for Nanotechnology Nanjing University 22 Hankou Road, Gulou District Nanjing 210093 P. R. China
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12
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Hu C, Sun H, Jia X, Lin H, Cao J, Chen S. Synergy of Piezoelectric Polarization and Empty Conduction Band of Zinc Sulfide: Realizing Structure Modulation on Graphitic Carbon Nitride for Carbon Dioxide Reduction to Methane. CHEMPHOTOCHEM 2022. [DOI: 10.1002/cptc.202200150] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Cheng Hu
- Huaibei Normal University Key Laboratory of Green and Precise Synthetic Chemistry and Applications, Ministry of Education; College of Chemistry and Materials Science Dongshan road 100. 235000 Huaibei CHINA
| | - Haoyu Sun
- Huaibei Normal University Key Laboratory of Green and Precise Synthetic Chemistry and Applications, Ministry of Education; College of Chemistry and Materials Science Dongshan road 100. 235000 Huaibei CHINA
| | - Xuemei Jia
- Huaibei Normal University College of chemistry and materials science Dongshan road 100. 235000 Huaibei CHINA
| | - Haili Lin
- Huaibei Normal University Key Laboratory of Green and Precise Synthetic Chemistry and Applications, Ministry of Education; College of Chemistry and Materials Science Dongshan road 100. 235000 Huaibei CHINA
| | - Jing Cao
- Huaibei Normal University Key Laboratory of Green and Precise Synthetic Chemistry and Applications, Ministry of Education; College of Chemistry and Materials Science Dongshan road 100. 235000 Huaibei CHINA
| | - Shifu Chen
- Huaibei Normal University Key Laboratory of Green and Precise Synthetic Chemistry and Applications, Ministry of Education; College of Chemistry and Materials Science Dongshan road 100. 235000 Huaibei CHINA
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13
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Janani B, Okla MK, Abdel-Maksoud MA, AbdElgawad H, Thomas AM, Raju LL, Al-Qahtani WH, Khan SS. CuO loaded ZnS nanoflower entrapped on PVA-chitosan matrix for boosted visible light photocatalysis for tetracycline degradation and anti-bacterial application. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2022; 306:114396. [PMID: 35026709 DOI: 10.1016/j.jenvman.2021.114396] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/01/2021] [Revised: 12/07/2021] [Accepted: 12/25/2021] [Indexed: 06/14/2023]
Abstract
Novel photocatalyst CuO loaded ZnS nanoflower supported on carbon frame work PVA/Chitosan was synthesized by co-precipitation and ultrasonic assisted method. The co-existence of ZnS and CuO and its crystallinity in nanohybrid was verified by XRD, SAED and HR-TEM analysis. The availability of defects in ZnS was identified by EPR. FTIR and TGA verified the presence of PVA and Chitosan. Defects mediated ZnS-CuO/PVA/chitosan heterojunction promote synergistic charge separation with type II interface. Zn-vacancy facilitates two-photon excitation that improves visible-light harvesting. The photocatalytic activity of ZnS-CuO/PVA/Chitosan was 94.7% which is higher when compared to ZnS (40%) and CuO (60%). The photocatalytic mechanism was elucidated using scavenger test and both ·O2- and ·OH were found to play key role in tetracycline degradation. In addition, ZnS-CuO/PVA/Chitosan demonstrated efficient anti-microbial effect against the both gram strains on comparing with individual ZnS and CuO. Thus, the multifunctional ZnS-CuO/PVA/Chitosan is promising for the photocatalytic degradation of tetracycline and as an antimicrobial agent.
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Affiliation(s)
- B Janani
- Nanobiotechnology Laboratory, Department of Biotechnology, Bannari Amman Institute of Technology, Sathyamangalam, Tamil Nadu, India
| | - Mohammad K Okla
- Botany and Microbiology Department, College of Science, King Saud University, P.O. Box 2455, Riyadh, 11451, Saudi Arabia
| | - Mostafa A Abdel-Maksoud
- Botany and Microbiology Department, College of Science, King Saud University, P.O. Box 2455, Riyadh, 11451, Saudi Arabia
| | - Hamada AbdElgawad
- Integrated Molecular Plant Physiology Research, Department of Biology, University of Antwerp, Antwerpen, 2020, Belgium
| | - Ajith M Thomas
- Department of Botany and Biotechnology, St Xavier's College, Thumba, Thiruvananthapuram, India
| | - Lija L Raju
- Department of Zoology, Mar Ivanios College, Nalanchira, Thiruvananthapuram, India
| | - Wahidah H Al-Qahtani
- Department of Food Sciences & Nutrition, College of Food & Agriculture Sciences, King Saud University, P.O. Box 2455, Riyadh, 11451, Saudi Arabia
| | - S Sudheer Khan
- Nanobiotechnology Laboratory, Department of Biotechnology, Bannari Amman Institute of Technology, Sathyamangalam, Tamil Nadu, India.
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14
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Huang J, Chen J, Liu W, Zhang J, Chen J, Li Y. Copper-doped zinc sulfide nanoframes with three-dimensional photocatalytic surfaces for enhanced solar driven H2 production. CHINESE JOURNAL OF CATALYSIS 2022. [DOI: 10.1016/s1872-2067(21)63864-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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15
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Zhang Y, Zhang Y, Zhang H, Bai L, Hao L, Ma T, Huang H. Defect engineering in metal sulfides for energy conversion and storage. Coord Chem Rev 2021. [DOI: 10.1016/j.ccr.2021.214147] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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16
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Xiao B, Lv T, Zhao J, Rong Q, Zhang H, Wei H, He J, Zhang J, Zhang Y, Peng Y, Liu Q. Synergistic Effect of the Surface Vacancy Defects for Promoting Photocatalytic Stability and Activity of ZnS Nanoparticles. ACS Catal 2021. [DOI: 10.1021/acscatal.1c03476] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- Bin Xiao
- Yunnan Key Laboratory for Micro/Nano Materials & Technology, National Center for International Research on Photoelectric and Energy Materials, School of Materials and Energy, Yunnan University, Kunming 650091, China
| | - Tianping Lv
- Yunnan Key Laboratory for Micro/Nano Materials & Technology, National Center for International Research on Photoelectric and Energy Materials, School of Materials and Energy, Yunnan University, Kunming 650091, China
| | - Jianhong Zhao
- Yunnan Key Laboratory for Micro/Nano Materials & Technology, National Center for International Research on Photoelectric and Energy Materials, School of Materials and Energy, Yunnan University, Kunming 650091, China
| | - Qian Rong
- Yunnan Key Laboratory for Micro/Nano Materials & Technology, National Center for International Research on Photoelectric and Energy Materials, School of Materials and Energy, Yunnan University, Kunming 650091, China
| | - Hong Zhang
- Key Laboratory of Magnetism and Magnetic Materials of the Ministry of Education, School of Physical Science and Technology and Electron Microscopy Centre of Lanzhou University, Lanzhou University, Lanzhou 730000, China
| | - Haitang Wei
- Yunnan Key Laboratory for Micro/Nano Materials & Technology, National Center for International Research on Photoelectric and Energy Materials, School of Materials and Energy, Yunnan University, Kunming 650091, China
| | - Jingcheng He
- Yunnan Key Laboratory for Micro/Nano Materials & Technology, National Center for International Research on Photoelectric and Energy Materials, School of Materials and Energy, Yunnan University, Kunming 650091, China
| | - Jin Zhang
- Yunnan Key Laboratory for Micro/Nano Materials & Technology, National Center for International Research on Photoelectric and Energy Materials, School of Materials and Energy, Yunnan University, Kunming 650091, China
| | - Yumin Zhang
- Yunnan Key Laboratory for Micro/Nano Materials & Technology, National Center for International Research on Photoelectric and Energy Materials, School of Materials and Energy, Yunnan University, Kunming 650091, China
| | - Yong Peng
- Key Laboratory of Magnetism and Magnetic Materials of the Ministry of Education, School of Physical Science and Technology and Electron Microscopy Centre of Lanzhou University, Lanzhou University, Lanzhou 730000, China
| | - Qingju Liu
- Yunnan Key Laboratory for Micro/Nano Materials & Technology, National Center for International Research on Photoelectric and Energy Materials, School of Materials and Energy, Yunnan University, Kunming 650091, China
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17
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Hao X, Xiang D, Jin Z. Zn‐Vacancy Engineered S‐Scheme ZnCdS/ZnS Photocatalyst for Highly Efficient Photocatalytic H
2
Evolution. ChemCatChem 2021. [DOI: 10.1002/cctc.202100994] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Affiliation(s)
- Xuqiang Hao
- School of Chemistry and Chemical Engineering North Minzu University Yinchuan 750021 (P. R. China
- Ningxia Key Laboratory of Solar Chemical Conversion Technology North Minzu University Yinchuan 750021 P. R. China
- Key Laboratory for Chemical Engineering and Technology State Ethnic Affairs Commission North Minzu University Yinchuan 750021 P. R. China
| | - Dingzhou Xiang
- School of Chemistry and Chemical Engineering North Minzu University Yinchuan 750021 (P. R. China
- Ningxia Key Laboratory of Solar Chemical Conversion Technology North Minzu University Yinchuan 750021 P. R. China
- Key Laboratory for Chemical Engineering and Technology State Ethnic Affairs Commission North Minzu University Yinchuan 750021 P. R. China
| | - Zhiliang Jin
- School of Chemistry and Chemical Engineering North Minzu University Yinchuan 750021 (P. R. China
- Ningxia Key Laboratory of Solar Chemical Conversion Technology North Minzu University Yinchuan 750021 P. R. China
- Key Laboratory for Chemical Engineering and Technology State Ethnic Affairs Commission North Minzu University Yinchuan 750021 P. R. China
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18
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Zhang Z, Yi G, Li P, Zhang X, Fan H, Wang X, Zhang C, Zhang Y, Sun Q. Construction of N-Doped Carbon Dots/Macroporous TiO 2 Composites (N-CDs/m-TiO 2) with Dramatically Enhanced Photocatalytic Activity. Ind Eng Chem Res 2021. [DOI: 10.1021/acs.iecr.1c02081] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Zhengting Zhang
- College of Chemistry and Chemical Engineering, Henan Polytechnic University, Jiaozuo 454003, China
- Collaborative Innovation Center of Coal Work Safety and Clean High Efficiency Utilization, Jiaozuo 454003, China
- Henan Key Laboratory of Coal Green Conversion, Jiaozuo 454003, China
- Program for Innovative Research Team in the University of Henan Province (21IRTSTHN006), Jiaozuo 454003, China
| | - Guiyun Yi
- College of Chemistry and Chemical Engineering, Henan Polytechnic University, Jiaozuo 454003, China
- Collaborative Innovation Center of Coal Work Safety and Clean High Efficiency Utilization, Jiaozuo 454003, China
- Henan Key Laboratory of Coal Green Conversion, Jiaozuo 454003, China
- Program for Innovative Research Team in the University of Henan Province (21IRTSTHN006), Jiaozuo 454003, China
| | - Peng Li
- College of Chemistry and Chemical Engineering, Henan Polytechnic University, Jiaozuo 454003, China
- Collaborative Innovation Center of Coal Work Safety and Clean High Efficiency Utilization, Jiaozuo 454003, China
- Henan Key Laboratory of Coal Green Conversion, Jiaozuo 454003, China
- Program for Innovative Research Team in the University of Henan Province (21IRTSTHN006), Jiaozuo 454003, China
| | - Xiuxiu Zhang
- College of Chemistry and Chemical Engineering, Henan Polytechnic University, Jiaozuo 454003, China
- Collaborative Innovation Center of Coal Work Safety and Clean High Efficiency Utilization, Jiaozuo 454003, China
- Henan Key Laboratory of Coal Green Conversion, Jiaozuo 454003, China
- Program for Innovative Research Team in the University of Henan Province (21IRTSTHN006), Jiaozuo 454003, China
| | - Haiyang Fan
- College of Chemistry and Chemical Engineering, Henan Polytechnic University, Jiaozuo 454003, China
- Collaborative Innovation Center of Coal Work Safety and Clean High Efficiency Utilization, Jiaozuo 454003, China
- Henan Key Laboratory of Coal Green Conversion, Jiaozuo 454003, China
- Program for Innovative Research Team in the University of Henan Province (21IRTSTHN006), Jiaozuo 454003, China
| | - Xiaodong Wang
- Department of Materials Science and Engineering, Henan Polytechnic University, Jiaozuo 454003, China
| | - Chuanxiang Zhang
- College of Chemistry and Chemical Engineering, Henan Polytechnic University, Jiaozuo 454003, China
- Collaborative Innovation Center of Coal Work Safety and Clean High Efficiency Utilization, Jiaozuo 454003, China
- Henan Key Laboratory of Coal Green Conversion, Jiaozuo 454003, China
- Program for Innovative Research Team in the University of Henan Province (21IRTSTHN006), Jiaozuo 454003, China
| | - Yulong Zhang
- College of Chemistry and Chemical Engineering, Henan Polytechnic University, Jiaozuo 454003, China
- Collaborative Innovation Center of Coal Work Safety and Clean High Efficiency Utilization, Jiaozuo 454003, China
- Henan Key Laboratory of Coal Green Conversion, Jiaozuo 454003, China
- Program for Innovative Research Team in the University of Henan Province (21IRTSTHN006), Jiaozuo 454003, China
| | - Qi Sun
- College of Chemistry and Chemical Engineering, Henan Polytechnic University, Jiaozuo 454003, China
- Collaborative Innovation Center of Coal Work Safety and Clean High Efficiency Utilization, Jiaozuo 454003, China
- Henan Key Laboratory of Coal Green Conversion, Jiaozuo 454003, China
- Program for Innovative Research Team in the University of Henan Province (21IRTSTHN006), Jiaozuo 454003, China
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19
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Xiong J, Li Y, Lu S, Guo W, Zou J, Fang Z. Controllable sulphur vacancies confined in nanoporous ZnS nanoplates for visible-light photocatalytic hydrogen evolution. Chem Commun (Camb) 2021; 57:8186-8189. [PMID: 34313281 DOI: 10.1039/d1cc02593g] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Controllable sulphur vacancies (Sv) confined in nanoporous ZnS nanoplates (Sv-ZnS) were prepared successfully via rapid heat treatment of ZnS(en)0.5 nanoplates. Sv with controllable concentrations originating from the in situ doping of N atoms endowed Sv-ZnS with a visible-light photocatalytic H2 production activity, having a positive linear correlation with Sv concentration.
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Affiliation(s)
- Jinhua Xiong
- Fujian Provincial Key Laboratory of Clean Energy Materials, Longyan University, Longyan 364000, P. R. China.
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20
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Guo J, Liang Y, Liu L, Hu J, Wang H, An W, Cui W. Core-shell structure of sulphur vacancies-CdS@CuS: Enhanced photocatalytic hydrogen generation activity based on photoinduced interfacial charge transfer. J Colloid Interface Sci 2021; 600:138-149. [PMID: 34010771 DOI: 10.1016/j.jcis.2021.05.013] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2021] [Revised: 05/02/2021] [Accepted: 05/03/2021] [Indexed: 10/21/2022]
Abstract
To regulate the charge flow of the photocatalyst in photocatalytic hydrogen reactions is highly desirable. In this study, a highly efficient sulphur vacancies-CdS@CuS core-shell heterostructure photocatalyst (denoted CdS-SV@CuS) was developed through the surface modification of CdS-sulphur vacancies (SV) nanoparticles by CuS based on photoinduced interfacial charge transfer (IFCT). This novel photocatalyst with modulated charge transfer was prepared by hydrothermal treatment and subsequent cation-exchange reactions. The SV confined in CdS and the IFCT facilitate the charge carrier's efficient spatial separation. The optimized CdS-SV@CuS(5%) catalyst exhibited a remarkably higher H2 production rate of 1654.53 μmol/g/h, approximately 6.7 and 4.0 times higher than those of pure CdS and CdS-SV, respectively. The high photocatalytic performance is attributed to the rapid charge separation, caused by the intimate interactions between CdS-SV and CuS in the core-shell heterostructure. This is the first time that a straightforward method is adopted to construct a metal sulphide core-shell structure for superior H2-production activity by IFCT.
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Affiliation(s)
- Junlan Guo
- School of Chemical Engineering and Technology, Hebei University of Technology, Tianjin 300130, PR China
| | - Yinghua Liang
- School of Chemical Engineering and Technology, Hebei University of Technology, Tianjin 300130, PR China; College of Chemical Engineering, Hebei Key Laboratory for Environment Photocatalytic and Electrocatalytic Materials, North China University of Science and Technology, Tangshan, Hebei 063210, PR China.
| | - Li Liu
- College of Chemical Engineering, Hebei Key Laboratory for Environment Photocatalytic and Electrocatalytic Materials, North China University of Science and Technology, Tangshan, Hebei 063210, PR China
| | - Jinshan Hu
- College of Chemical Engineering, Hebei Key Laboratory for Environment Photocatalytic and Electrocatalytic Materials, North China University of Science and Technology, Tangshan, Hebei 063210, PR China
| | - Huan Wang
- College of Chemical Engineering, Hebei Key Laboratory for Environment Photocatalytic and Electrocatalytic Materials, North China University of Science and Technology, Tangshan, Hebei 063210, PR China
| | - Weijia An
- College of Chemical Engineering, Hebei Key Laboratory for Environment Photocatalytic and Electrocatalytic Materials, North China University of Science and Technology, Tangshan, Hebei 063210, PR China
| | - Wenquan Cui
- College of Chemical Engineering, Hebei Key Laboratory for Environment Photocatalytic and Electrocatalytic Materials, North China University of Science and Technology, Tangshan, Hebei 063210, PR China.
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21
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Atar N, Yola ML. A novel QCM immunosensor development based on gold nanoparticles functionalized sulfur-doped graphene quantum dot and h-ZnS-CdS NC for Interleukin-6 detection. Anal Chim Acta 2021; 1148:338202. [DOI: 10.1016/j.aca.2021.338202] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2020] [Revised: 12/25/2020] [Accepted: 01/03/2021] [Indexed: 02/08/2023]
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22
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Chen F, Ma T, Zhang T, Zhang Y, Huang H. Atomic-Level Charge Separation Strategies in Semiconductor-Based Photocatalysts. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2021; 33:e2005256. [PMID: 33501728 DOI: 10.1002/adma.202005256] [Citation(s) in RCA: 107] [Impact Index Per Article: 35.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/03/2020] [Revised: 09/11/2020] [Indexed: 06/12/2023]
Abstract
Semiconductor-based photocatalysis as a productive technology furnishes a prospective solution to environmental and renewable energy issues, but its efficiency greatly relies on the effective bulk and surface separation of photoexcited charge carriers. Exploitation of atomic-level strategies allows in-depth understanding on the related mechanisms and enables bottom-up precise design of photocatalysts, significantly enhancing photocatalytic activity. Herein, the advances on atomic-level charge separation strategies toward developing robust photocatalysts are highlighted, elucidating the fundamentals of charge separation and transfer processes and advanced probing techniques. The atomic-level bulk charge separation strategies, embodied by regulation of charge movement pathway and migration dynamic, boil down to shortening the charge diffusion distance to the atomic-scale, establishing atomic-level charge transfer channels, and enhancing the charge separation driving force. Meanwhile, regulating the in-plane surface structure and spatial surface structure are summarized as atomic-level surface charge separation strategies. Moreover, collaborative strategies for simultaneous manipulation of bulk and surface photocharges are also introduced. Finally, the existing challenges and future prospects for fabrication of state-of-the-art photocatalysts are discussed on the basis of a thorough comprehension of atomic-level charge separation strategies.
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Affiliation(s)
- Fang 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, Beijing, 100083, China
| | - Tianyi Ma
- Discipline of Chemistry, School of Environmental & Life Sciences, The University of Newcastle (UON), Callaghan, NSW, 2308, Australia
| | - Tierui Zhang
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, 100190, China
| | - Yihe Zhang
- 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, Beijing, 100083, China
| | - Hongwei Huang
- 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, Beijing, 100083, China
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23
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Wang X, Chen J, Li Q, Li L, Zhuang Z, Chen FF, Yu Y. Light-Driven Syngas Production over Defective ZnIn 2 S 4 Nanosheets. Chemistry 2021; 27:3786-3792. [PMID: 33200430 DOI: 10.1002/chem.202004520] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2020] [Revised: 11/13/2020] [Indexed: 01/07/2023]
Abstract
Photocatalytic syngas (CO and H2 ) production with CO2 as gas source not only ameliorates greenhouse effect, but also produces valuable chemical feedstocks. However, traditional photocatalytic systems require noble metal or suffers from low yield. Here, we demonstrate that S vacancies ZnIn2 S4 (VS -ZnIn2 S4 ) nanosheets are an ideal photocatalyst to drive CO2 reduction into syngas. It is found that building S vacancies can endow ZnIn2 S4 with stronger photoabsorption, efficient electron-hole separation, and larger CO2 adsorption, finally promoting both hydrogen evolution reaction (HER) and CO2 reduction reaction (CO2 RR). The syngas yield of CO and H2 is therefore significantly increased. In contrast to pristine ZnIn2 S4 , the syngas yield over VS -ZnIn2 S4 can be improved by roughly ≈4.73 times and the CO/H2 ratio is modified from 1:4.18 to 1:1. Total amount of syngas after 12 h photocatalysis is as high as 63.20 mmol g-1 without use of any noble metals, which is even higher than those of traditional noble metal-based catalysts in the reported literatures. This work demonstrates the critical role of S vacancies in mediating catalytic activity and selectivity, and highlights the attractive ability of defective ZnIn2 S4 for light-driven syngas production.
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Affiliation(s)
- Xuanwei Wang
- Key Laboratory of Advanced Materials Technologies, College of Materials Science and Engineering, Fuzhou University, Fuzhou, 350108, P. R. China
| | - Jianfeng Chen
- Key Laboratory of Advanced Materials Technologies, College of Materials Science and Engineering, Fuzhou University, Fuzhou, 350108, P. R. China
| | - Qiuyun Li
- Key Laboratory of Advanced Materials Technologies, College of Materials Science and Engineering, Fuzhou University, Fuzhou, 350108, P. R. China
| | - Lingyun Li
- Key Laboratory of Advanced Materials Technologies, College of Materials Science and Engineering, Fuzhou University, Fuzhou, 350108, P. R. China
| | - Zanyong Zhuang
- Key Laboratory of Advanced Materials Technologies, College of Materials Science and Engineering, Fuzhou University, Fuzhou, 350108, P. R. China
| | - Fei-Fei Chen
- Key Laboratory of Advanced Materials Technologies, College of Materials Science and Engineering, Fuzhou University, Fuzhou, 350108, P. R. China
| | - Yan Yu
- Key Laboratory of Advanced Materials Technologies, College of Materials Science and Engineering, Fuzhou University, Fuzhou, 350108, P. R. China
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2D mesoporous ultrathin Cd0.5Zn0.5S nanosheet: Fabrication mechanism and application potential for photocatalytic H2 evolution. CHINESE JOURNAL OF CATALYSIS 2021. [DOI: 10.1016/s1872-2067(20)63593-8] [Citation(s) in RCA: 81] [Impact Index Per Article: 27.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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25
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Ham S, Jeong DW, Jang DJ. Facile fabrication of reusable FeOOH-polycarbonate membranes for effective separation of organic molecules. Sep Purif Technol 2020. [DOI: 10.1016/j.seppur.2020.117513] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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26
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Bai X, Zhang Y, Gao W, Zhao D, Yang D, Jia N. Hollow ZnS–CdS nanocage based photoelectrochemical sensor combined with molecularly imprinting technology for sensitive detection of oxytetracycline. Biosens Bioelectron 2020; 168:112522. [DOI: 10.1016/j.bios.2020.112522] [Citation(s) in RCA: 45] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2020] [Revised: 06/16/2020] [Accepted: 08/16/2020] [Indexed: 11/30/2022]
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27
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Xia B, Deng F, Zhang S, Hua L, Luo X, Ao M. Design and synthesis of robust Z-scheme ZnS-SnS 2 n-n heterojunctions for highly efficient degradation of pharmaceutical pollutants: Performance, valence/conduction band offset photocatalytic mechanisms and toxicity evaluation. JOURNAL OF HAZARDOUS MATERIALS 2020; 392:122345. [PMID: 32092644 DOI: 10.1016/j.jhazmat.2020.122345] [Citation(s) in RCA: 57] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/03/2019] [Revised: 01/14/2020] [Accepted: 02/16/2020] [Indexed: 06/10/2023]
Abstract
Petal-like ZnS-SnS2 heterojunctions with Z-scheme band alignment were prepared by one-pot solvothermal strategy. The optimal (1:1) ZnS-SnS2 can degrade 93.46 % of tetracycline and remove 73.9 % COD of pharmaceutical wastewater under visible-light irradiation due to the efficient production of H, O2-, h+ and OH. The toxicity evaluation by ECOSAR prediction and the growth of E. coli indicates efficient toxicity reduction of tetracycline by photocatalysis and the non-toxicity of ZnS-SnS2. The attacked sites on tetracycline by reactive species were analyzed according to Fukui index, and two degradation pathways of tetracycline were inferred via the identification of intermediate products. Tetracycline degradation efficiency and the energy consumption in different water bodies were compared, and it was found that the electrical energy per order (EE/O) was the lowest in Ganjiang River. The valence band offset (ΔEVBO) and conduction band offset (ΔECBO) of ZnS-SnS2 were 1.02 eV and 0.22 eV, respectively. The probable photocatalytic mechanism of ZnS/SnS2 heterojunctions with Z-scheme band alignment based on ΔEVBO and ΔECBO was first presented.
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Affiliation(s)
- Baihui Xia
- National-Local Joint Engineering Research Center of Heavy Metal Pollutants Control and Resource Utilization, Nanchang Hangkong University, Nanchang, 330063, PR China
| | - Fang Deng
- National-Local Joint Engineering Research Center of Heavy Metal Pollutants Control and Resource Utilization, Nanchang Hangkong University, Nanchang, 330063, PR China.
| | - Shuqu Zhang
- National-Local Joint Engineering Research Center of Heavy Metal Pollutants Control and Resource Utilization, Nanchang Hangkong University, Nanchang, 330063, PR China
| | - Li Hua
- National-Local Joint Engineering Research Center of Heavy Metal Pollutants Control and Resource Utilization, Nanchang Hangkong University, Nanchang, 330063, PR China
| | - Xubiao Luo
- National-Local Joint Engineering Research Center of Heavy Metal Pollutants Control and Resource Utilization, Nanchang Hangkong University, Nanchang, 330063, PR China.
| | - Meiying Ao
- College of Life Sciences, Jiangxi University of Traditional Chinese Medicine, Nanchang, Jiangxi, 330025, PR China
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Maarisetty D, Mahanta S, Sahoo AK, Mohapatra P, Baral SS. Steering the Charge Kinetics in Dual-Functional Photocatalysis by Surface Dipole Moments and Band Edge Modulation: A Defect Study in TiO 2-ZnS-rGO Composites. ACS APPLIED MATERIALS & INTERFACES 2020; 12:11679-11692. [PMID: 32067446 DOI: 10.1021/acsami.9b22418] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Developing an efficient photocatalyst for concurrent hydrogen production and environmental remediation by using solar energy is a challenge. Defect engineering, although it offers a strategical promise to enhance the photocatalytic performance, has limitations that come from the ambiguity surrounding its role. In the current work, a comprehensive study on defects in promoting the charge transfer, band edge modulation, and surface reaction was carried out. The excess electrons springing from defects act like donor states and cause band bending at the junction interface. Characterization techniques such as X-ray photoelectron spectroscopy, ultraviolet photoelectron spectroscopy, electron spin resonance, and photoluminescence were employed to investigate defect functionality, and its ultimate effect on photocatalytic performance was studied by simultaneous H2 production and methylene blue degradation. The role of graphene in optoelectronics and defect formation in the composite catalysts was explored. In addition, efforts have been made to unveil the reaction pathway for hydrogen evolution reaction and oxygen evolution reaction where excess defect density greatly hampered the quantum yield of the process. Results suggest that maintaining optimal defect concentration aborts the undesired thermodynamically favored back reactions. The conduction band and valence band values of the catalysts indicate that the photocatalytic mechanism was dominated by the electron pathway. Graphene acted as an effective electron sink when its concentration was around 2.5-3%. The superior activity of TiO2-ZnS-rGO was attributed to the narrow bandgap, rapid separation of photo-excited charge carriers, and favorable conduction band position for photocatalytic reactions. This work may assist in exploring the fundamental role of defects in driving the photocatalytic reactions and improve the selectivity in heterogeneous photocatalysis.
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Affiliation(s)
- Dileep Maarisetty
- Department of Chemical Engineering, BITS Pilani KK Birla Goa Campus, South Goa 403726, Goa, India
| | - Sasmita Mahanta
- Department of Chemistry C.V.Raman College of Engineering, Bhubaneswar 752054, India
| | - Akshaya Kumar Sahoo
- Department of Chemistry, Model Degree College, Nuapada, Khariar 766107, Odisha, India
| | - Priyabrat Mohapatra
- Department of Chemistry C.V.Raman College of Engineering, Bhubaneswar 752054, India
| | - Saroj Sundar Baral
- Department of Chemical Engineering, BITS Pilani KK Birla Goa Campus, South Goa 403726, Goa, India
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Sun B, Liang Z, Qian Y, Xu X, Han Y, Tian J. Sulfur Vacancy-Rich O-Doped 1T-MoS 2 Nanosheets for Exceptional Photocatalytic Nitrogen Fixation over CdS. ACS APPLIED MATERIALS & INTERFACES 2020; 12:7257-7269. [PMID: 31951373 DOI: 10.1021/acsami.9b20767] [Citation(s) in RCA: 73] [Impact Index Per Article: 18.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Here, we reported that sulfur vacancy-rich O-doped 1T-MoS2 nanosheets (denoted as SV-1T-MoS2) can surpass the activity of Pt as cocatalysts to assist in the photocatalytic nitrogen fixation of CdS nanorods. SV-1T-MoS2 cocatalysts exhibit sulfur vacancies, O-doping, more metallic 1T phase, and high electronic conductivity, thus leading to the exposure of more active edge sites, high Brunauer-Emmett-Teller surface area, enhanced visible light absorption, and improved electron separation and transfer, which are beneficial for photocatalytic nitrogen fixation. Consequently, the optimized 30 wt % SV-1T-MoS2-/CdS composites exhibit an outstanding nitrogen fixation rate of 8220.83 μmol L-1 h-1 g-1 and long-term stability under simulated solar light irradiation, significantly higher than pure CdS nanorods, CdS-Pt (0.1 wt %), and 30 wt % 1T-MoS2/CdS composites. The catalytic mechanism of photocatalytic nitrogen fixation on SV-1T-MoS2 is discussed by density functional theory calculations.
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Affiliation(s)
- Benteng Sun
- School of Materials Science and Engineering , Shandong University of Science and Technology , Qingdao 266590 , China
| | - Zhangqian Liang
- School of Materials Science and Engineering , Shandong University of Science and Technology , Qingdao 266590 , China
| | - Yeye Qian
- School of Materials Science and Engineering , Shandong University of Science and Technology , Qingdao 266590 , China
| | - Xuesong Xu
- School of Materials Science and Engineering , Shandong University of Science and Technology , Qingdao 266590 , China
| | - Ye Han
- School of Materials Science and Engineering , Shandong University of Science and Technology , Qingdao 266590 , China
| | - Jian Tian
- School of Materials Science and Engineering , Shandong University of Science and Technology , Qingdao 266590 , China
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30
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Daskalakis I, Vamvasakis I, Papadas IT, Tsatsos S, Choulis SA, Kennou S, Armatas GS. Surface defect engineering of mesoporous Cu/ZnS nanocrystal-linked networks for improved visible-light photocatalytic hydrogen production. Inorg Chem Front 2020. [DOI: 10.1039/d0qi01013h] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Cu-doped ZnS nanocrystal-linked mesoporous frameworks possessing suitable electronic energy levels, strong visible-light absorption and large porosity with a low defective surface show efficient photocatalytic H2 evolution activity from water splitting.
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Affiliation(s)
- Ioannis Daskalakis
- Department of Materials Science and Technology
- University of Crete
- Heraklion 70013
- Greece
| | - Ioannis Vamvasakis
- Department of Materials Science and Technology
- University of Crete
- Heraklion 70013
- Greece
| | - Ioannis T. Papadas
- Molecular Electronics and Photonics Research Unit
- Department of Mechanical Engineering and Materials Science and Engineering
- Cyprus University of Technology
- Limassol 3041
- Cyprus
| | - Sotirios Tsatsos
- Department of Chemical Engineering
- Surface Science Laboratory
- University of Patras
- Patra 26504
- Greece
| | - Stelios A. Choulis
- Molecular Electronics and Photonics Research Unit
- Department of Mechanical Engineering and Materials Science and Engineering
- Cyprus University of Technology
- Limassol 3041
- Cyprus
| | - Stella Kennou
- Department of Chemical Engineering
- Surface Science Laboratory
- University of Patras
- Patra 26504
- Greece
| | - Gerasimos S. Armatas
- Department of Materials Science and Technology
- University of Crete
- Heraklion 70013
- Greece
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31
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Kundu J, Satpathy BK, Pradhan D. Composition-Controlled CdS/ZnS Heterostructure Nanocomposites for Efficient Visible Light Photocatalytic Hydrogen Generation. Ind Eng Chem Res 2019. [DOI: 10.1021/acs.iecr.9b03764] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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32
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Su Y, Wang J, Li S, Zhu J, Liu W, Zhang Z. Self-templated microwave-assisted hydrothermal synthesis of two-dimensional holey hydroxyapatite nanosheets for efficient heavy metal removal. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2019; 26:30076-30086. [PMID: 31418146 DOI: 10.1007/s11356-019-06160-4] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/17/2019] [Accepted: 07/31/2019] [Indexed: 06/10/2023]
Abstract
Heavy metals have caused serious environmental problems and threat to human health. Ultrathin and holey two-dimensional (2D) nanosheets have recently drawn significant attention as superb adsorbent material to remove heavy metal ions due to their unique physicochemical properties. Herein, we report a self-template-directed ultrafast reaction route to synthesis porous hydroxyapatite (Ca10(PO4)6(OH)2) nanosheets via a microwave-assisted hydrothermal method using poly(allylamine hydrochloride) as an additive. The resulting hydroxyapatite nanosheets showed a high specific surface area (92.9 m2 g-1) and excellent adsorption performance for various heavy metal ions including Pb(II), Cu(II), and Cd(II), with maximum adsorption capacities of 210.5, 31.6, and 24.9 mg g-1, respectively. The adsorption kinetics fitted well with the pseudo-second-order equation and the equilibrium data showed a high correlation coefficient with the Langmuir model. Based on the experimental results and analysis, we can conclude that the sorption of heavy metal ions with the hydroxyapatite nanosheets mainly attributes to surface complexation and cation exchange. The present synthetic strategy allows the fast and massive production of porous hydroxyapatite ultrathin nanosheets and may also potentially be applicable to the fabrication of other metal phosphates with assembled or hierarchical porous structures towards various applications such as water purification.
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Affiliation(s)
- Yiping Su
- School of Environmental Science and Engineering, Guangdong Provincial Key Laboratory of Soil and Groundwater Pollution Control, Southern University of Science and Technology, Shenzhen, 518055, Guangdong, China
- Beijing Key Lab of New Energy Materials and Technology, School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing, 100083, China
| | - Jing Wang
- School of Environmental Science and Engineering, Guangdong Provincial Key Laboratory of Soil and Groundwater Pollution Control, Southern University of Science and Technology, Shenzhen, 518055, Guangdong, China
| | - Shun Li
- School of Environmental Science and Engineering, Guangdong Provincial Key Laboratory of Soil and Groundwater Pollution Control, Southern University of Science and Technology, Shenzhen, 518055, Guangdong, China.
- Academy for Advanced Interdisciplinary Studies, Southern University of Science and Technology, Shenzhen, 518055, Guangdong, China.
| | - Jianhua Zhu
- Anhui Province Key Laboratory of Metallurgical Emission Reduction and Resources, Metallurgical Reduction and Comprehensive Utilization of Resources of Key Laboratory of Ministry of Education, Anhui University of Technology, Maanshan, 243002, Anhui, China
| | - Weishu Liu
- Department of Materials Science and Engineering, Southern University of Science and Technology, Shenzhen, 518055, China.
| | - Zuotai Zhang
- School of Environmental Science and Engineering, Guangdong Provincial Key Laboratory of Soil and Groundwater Pollution Control, Southern University of Science and Technology, Shenzhen, 518055, Guangdong, China.
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Abstract
2D nanomaterials, with unique structural and electronic features, had been demonstrated as excellent photocatalysts, whose catalytic properties could be tunable with surface defect engineering. In this work, few-layer BiOBr nanosheets with oxygen vacancies (BiOBr-Ov) have been fabricated by a simple solvothermal reaction with the help of ethylene glycol. The obtained BiOBr-Ov exhibited the superior photocatalytic performance with a complete reduction of Cr(VI) (20 mg/L) within 12 min by visible light irradiation. Moreover, Cr(VI) with a high concentration (such as 30 mg/L) only requires 2 min to be photoreduced completely under solar light irradiation. The enhanced photocatalytic performance is contributed to the existence of oxygen vacancies. It has been proved by the results of electrochemical impedance and photocurrent that oxygen vacancies can effectively suppress recombination of photogenerated carriers.
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34
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Xu L, Ao Y, Guan B, Xiang Y, Guan J. Coordination Complex Transformation-Assisted Fabrication for Hollow Chestnut-Like Hierarchical ZnS with Enhanced Photocatalytic Hydrogen Evolution. NANOMATERIALS (BASEL, SWITZERLAND) 2019; 9:E273. [PMID: 30781430 PMCID: PMC6409558 DOI: 10.3390/nano9020273] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/21/2019] [Revised: 02/06/2019] [Accepted: 02/12/2019] [Indexed: 11/23/2022]
Abstract
Hierarchical nanostructures (HNs) are possibly endowed with novel properties due to their complex three-dimensional (3D) structures. Here, we provide a novel stepwise growth strategy of Coordination Complex Transformation-Assisted Growth for fabricating HNs. By using this, we prepare a new wurtzite ZnS HNs-hollow chestnut-like hierarchical microspheres (HCHMs), which are mesoporous hollow microspheres with single crystalline nanorods arrayed densely and radially from the centre. The HCHMs formation depends on the stepwise decomposition of the two Zn2+ complexes ([Zn(en)m(H₂O)2(3-m)]2+ and [Zn(en)m(NH₃)2(3-m)]2+, natural number m < 3). As the reaction proceeds, [Zn2+] has been distinctly reduced due to the transformation from [Zn(en)m(H₂O)2(3-m)]2+ to [Zn(en)m(NH₃)2(3-m)]2+ with a high stability constant, leading to a low crystal growth rate to obtain single crystalline nanorods. Additionally, the generated bubbles (CO₂, NH₃) acting as a template can induce the generation of hollow structure. The as-prepared ZnS HCHMs show an enhanced photocatalytic hydrogen evolution activity due to the single crystalline wurtzite phase and the high surface area contributed by the hollow hierarchical structures, as well as the mesoporosity. The versatility of the coordination complex transformation-assisted growth strategy will open up new possibilities for fabricating HNs, especially for those transition metal ions with excellent complex capabilities.
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Affiliation(s)
- Leilei Xu
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, International School of Materials Science and Engineering, Wuhan University of Technology, 122 Luoshi Road, Wuhan 430070, China.
| | - Yuwei Ao
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, International School of Materials Science and Engineering, Wuhan University of Technology, 122 Luoshi Road, Wuhan 430070, China.
| | - Bin Guan
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, International School of Materials Science and Engineering, Wuhan University of Technology, 122 Luoshi Road, Wuhan 430070, China.
| | - Yun Xiang
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, International School of Materials Science and Engineering, Wuhan University of Technology, 122 Luoshi Road, Wuhan 430070, China.
| | - Jianguo Guan
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, International School of Materials Science and Engineering, Wuhan University of Technology, 122 Luoshi Road, Wuhan 430070, China.
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35
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Verma A, Jaihindh DP, Fu YP. Photocatalytic 4-nitrophenol degradation and oxygen evolution reaction in CuO/g-C3N4 composites prepared by deep eutectic solvent-assisted chlorine doping. Dalton Trans 2019; 48:8594-8610. [DOI: 10.1039/c9dt01046g] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Heterostructured Cl-CuO/g-C3N4 composite for OER and photocatalytic 4-nitrophenol degradation.
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Affiliation(s)
- Atul Verma
- Department of Materials Science and Engineering
- National Dong Hwa University
- Hualien-97401
- R.O.C
| | | | - Yen-Pei Fu
- Department of Materials Science and Engineering
- National Dong Hwa University
- Hualien-97401
- R.O.C
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36
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Zhong W, Huang X, Xu Y, Yu H. One-step facile synthesis and high H 2-evolution activity of suspensible Cd xZn 1-xS nanocrystal photocatalysts in a S 2-/SO 32- system. NANOSCALE 2018; 10:19418-19426. [PMID: 30307455 DOI: 10.1039/c8nr06883f] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
For a CdS-based photocatalyst, both the photocorrosion resistance and the rapid H2-production reaction are highly required for improving its photocatalytic H2-production performance. In this study, a facile strategy was reported to simultaneously realize an improved photocorrosion resistance and rapid interfacial H2-evolution reaction of CdxZn1-xS solid-solution photocatalysts in a sulfur-rich S2-/SO32- solution. Here, the suspensible CdxZn1-xS nanocrystal photocatalysts are prepared by a one-step co-precipitation route through the direct introduction of Zn2+/Cd2+ mixing ions in a sulfur-rich Na2S-Na2SO3 solution, and the resultant CdxZn1-xS nanocrystals (ca. 5 nm) display a suspensible structure owing to the numerous and selective adsorption of S2-/SO32- on the surface of these CdxZn1-xS nanocrystals. It is found that the bandgap structure of CdxZn1-xS (from 2.25 to 3.52 eV) nanocrystals can be easily controlled by adjusting the Cd2+/Zn2+ molar ratio. The photocatalytic experimental results suggested that the suspensible CdxZn1-xS nanocrystal photocatalysts clearly displayed an excellent photocatalytic H2-production performance, and the suspensible Cd0.6Zn0.4S nanocrystals exhibit the highest photocatalytic H2-generation performance of 717.19 μmol h-1, a value higher than that of the sole CdS (320.99 μmol h-1) and ZnS (5.89 μmol h-1) by a factor of 2.2 and 121.8 times, respectively. Based on the experimental results, a possible S2- active site-mediated mechanism accounted for the high H2-production activity of the suspensible CdxZn1-xS nanocrystals, namely the numerous adsorbed S2- ions not only function as efficient hole scavengers to rapidly consume the photogenerated holes, resulting in an improved photocorrosion resistance of suspensible CdxZn1-xS nanocrystals, but also serve as effective H+-capturing active sites to accelerate the interfacial H2-production reaction. Meanwhile, an optimum bandgap structure of suspensible CdxZn1-xS nanocrystals is also extremely required for promoting the photocatalytic H2-production activity. This research may provide advanced insights for developing stable and high-activity photocatalytic materials.
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Affiliation(s)
- Wei Zhong
- Department of Chemistry, School of Chemistry, Chemical Engineering and Life Sciences, Wuhan University of Technology, Wuhan 430070, PR China.
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Lu Y, Wang Y, Cui S, Chen W, Mi L. In situ sulfuration synthesis of flexible PAN-CuS “flowering branch” heterostructures as recyclable catalysts for dye degradation. RSC Adv 2018; 8:40589-40594. [PMID: 35557923 PMCID: PMC9091420 DOI: 10.1039/c8ra08293f] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2018] [Accepted: 11/16/2018] [Indexed: 12/05/2022] Open
Abstract
“Flowering branch”-like PAN-CuS hierarchical heterostructures were in situ synthesized through a facile hydrothermal sulfuration growth process on PAN-based fibers prepared by electrospinning. The PAN fibers can serve as a stable flexible support, while CuS flowers assembled from nanosheets can act as reactive materials, showing high performance in the degradation of dyes. Moreover, these heterostructures can be recovered easily without a decrease in their photocatalytic activity, thus showing favorable recycling capability. “Flowering branch”-like PAN-CuS hierarchical heterostructures were in situ synthesized through a facile hydrothermal sulfuration growth process on PAN-based fibers prepared by electrospinning.![]()
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Affiliation(s)
- Yin Lu
- Center for Advanced Materials Research
- Zhongyuan University of Technology
- Zhengzhou
- P. R. China
| | - Yanjie Wang
- Center for Advanced Materials Research
- Zhongyuan University of Technology
- Zhengzhou
- P. R. China
| | - Shizhong Cui
- Center for Advanced Materials Research
- Zhongyuan University of Technology
- Zhengzhou
- P. R. China
| | - Weihua Chen
- College of Chemistry and Molecular Engineering
- Zhengzhou University
- Zhengzhou
- P. R. China
| | - Liwei Mi
- Center for Advanced Materials Research
- Zhongyuan University of Technology
- Zhengzhou
- P. R. China
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