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Zeng D, Shen T, Hu Y, Liu F, Liu Z, Song J, Guan R, Zhou C. ZnIn 2S 4-based multi-interface coupled photocatalyst for efficient photothermal synergistic catalytic hydrogen evolution. J Colloid Interface Sci 2024; 670:395-408. [PMID: 38772256 DOI: 10.1016/j.jcis.2024.05.122] [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: 03/12/2024] [Revised: 05/06/2024] [Accepted: 05/16/2024] [Indexed: 05/23/2024]
Abstract
Photothermal synergistic catalysis is a novel technology that converts energy. In this study, ZnIn2S4 with S-vacancy (ZIS-Vs) is combined with Nickel, Nickle Oxide and Carbon Nanofiber aggregates (Ni-NiO@CNFs) to create a multi-interface coupled photocatalyst with double Schottky barrier, double channel and mixed photothermal conversion effect. Theoretical calculation confirms that the Gibbs free energy (ΔG*H) of the S-scheme heterojunction in the composite material is -0.07 eV, which is close to 0. This promotes the adsorption of H* and accelerates the formation of H2. Internal photothermal catalysis is achieved by visible-near infrared (Vis-NIR, RT) irradiation. The internal photothermal catalytic hydrogen production rate of the best sample (0.9Ni-NiO@CNFs/ZIS-Vs) is as high as 17.24 mmol·g-1·h-1, and its photothermal conversion efficiency (η) is as high as 61.42 %. Its hydrogen production efficiency is 20.52 times that of ZIS-Vs (0.84 mmol·g-1·h-1) under visible light (Vis, RT) conditions. When the Vis-NIR light source is combined with external heating (75 ℃), the hydrogen production efficiency is further improved, and the hydrogen production efficiency (29.16 mmol·g-1·h-1) is 26.75 times that of ZIS-Vs (1.09 mmol·g-1·h-1, Vis-NIR, RT). Further analysis shows that the increase in hydrogen production resulted from the apparent activation energy (Ea) of the catalyst decreasing from 16.7 kJ·mol-1 to 9.28 kJ·mol-1. This study provides a valuable prototype for the design of an efficient photothermal synergistic catalytic system.
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Affiliation(s)
- Danni Zeng
- Key Laboratory for Advanced Technology in Environmental Protection of Jiangsu Province, Yancheng Institute of Technology, Jiangsu, China
| | - Tingzhe Shen
- Key Laboratory for Advanced Technology in Environmental Protection of Jiangsu Province, Yancheng Institute of Technology, Jiangsu, China
| | - Yadong Hu
- Key Laboratory for Advanced Technology in Environmental Protection of Jiangsu Province, Yancheng Institute of Technology, Jiangsu, China; School of Materials Science and Engineering, Henan Polytechnic University, Jiaozuo, China
| | - Fengjiao Liu
- Key Laboratory for Advanced Technology in Environmental Protection of Jiangsu Province, Yancheng Institute of Technology, Jiangsu, China
| | - Ze Liu
- Key Laboratory for Advanced Technology in Environmental Protection of Jiangsu Province, Yancheng Institute of Technology, Jiangsu, China
| | - Jun Song
- Key Laboratory for Advanced Technology in Environmental Protection of Jiangsu Province, Yancheng Institute of Technology, Jiangsu, China
| | - Rongfeng Guan
- Key Laboratory for Advanced Technology in Environmental Protection of Jiangsu Province, Yancheng Institute of Technology, Jiangsu, China.
| | - Changjian Zhou
- School of Chemistry and Chemical Engineering, Yancheng Institute of Technology, Jiangsu, China.
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Wang K, Yan B, Zhou B, Zhang Y, Lin GL, Zhang TS, Zhou M, Shen HM, Yang YF, Xia J, Li H, She Y. Acceleration of Photoinduced Electron Transfer by Modulating Electronegativity of Substituents in Stable Zr-Metal-Organic Frameworks to Boost Photocatalytic CO 2 Reduction. ACS APPLIED MATERIALS & INTERFACES 2024. [PMID: 38889009 DOI: 10.1021/acsami.4c06191] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/20/2024]
Abstract
Photoreduction of CO2 with water into chemical feedstocks of fuels provides a green way to help solve both the energy crisis and carbon emission issues. Metal-organic frameworks (MOFs) show great potential for CO2 photoreduction. However, poor water stability and sluggish charge transfer could limit their application. Herein, three water-stable MOFs functionalized with electron-donating methyl groups and/or electron-withdrawing trifluoromethyl groups are obtained for the CO2 photoreduction. Compared with UiO-67-o-CF3-CH3 and UiO-67-o-(CF3)2, UiO-67-o-(CH3)2 achieves excellent performance with an average CO generation rate of 178.0 μmol g-1 h-1 without using any organic solvent or sacrificial reagent. The superior photocatalytic activity of UiO-67-o-(CH3)2 is attributed to the fact that compared with trifluoromethyl groups, methyl groups could not only elevate CO2 adsorption capacity and reduction potential but also promote photoinduced charge separation and migration. These are evidenced by gas physisorption, photoluminescence, time-resolved photoluminescence, electrochemical impedance spectroscopy, transient photocurrent characteristics, and density functional theory calculations. The possible working mechanisms of electron-donating methyl groups are also proposed. Moreover, UiO-67-o-(CH3)2 demonstrates excellent reusability for the CO2 reduction. Based on these results, it could be affirmed that the strategy of modulating substituent electronegativity could provide guidance for designing highly efficient photocatalysts.
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Affiliation(s)
- Keke Wang
- State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology, College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310014, China
| | - Bin Yan
- State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology, College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310014, China
| | - Bolin Zhou
- State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology, College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310014, China
| | - Yi Zhang
- School of Chemistry and Chemical Engineering, Institute for Energy Research, Jiangsu University, Zhenjiang 212013, China
| | - Guo-Liang Lin
- State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology, College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310014, China
| | - Teng-Shuo Zhang
- State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology, College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310014, China
| | - Mengmeng Zhou
- State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology, College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310014, China
| | - Hai-Min Shen
- State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology, College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310014, China
| | - Yun-Fang Yang
- State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology, College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310014, China
| | - Jiexiang Xia
- School of Chemistry and Chemical Engineering, Institute for Energy Research, Jiangsu University, Zhenjiang 212013, China
| | - Huaming Li
- School of Chemistry and Chemical Engineering, Institute for Energy Research, Jiangsu University, Zhenjiang 212013, China
| | - Yuanbin She
- State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology, College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310014, China
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Wang Y, Yang J, Zhang Z, Zhao P, Chen Y, Guo Y, Luo X. Highly stable Ag-doped Cu 2O immobilized cellulose-derived carbon beads with enhanced visible-light photocatalytic degradation of levofloxacin. Int J Biol Macromol 2024; 269:131885. [PMID: 38688340 DOI: 10.1016/j.ijbiomac.2024.131885] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2023] [Revised: 04/12/2024] [Accepted: 04/24/2024] [Indexed: 05/02/2024]
Abstract
Ag-doped Cu2O immobilized carbon beads (Ag/Cu2O@CB) based composite photocatalysts have been prepared for the removal of levofloxacin, an antibiotic, from water. The photocatalysts were prepared by the processes of chemical reduction and in-situ solid-phase precipitation. The composite photocatalyst was characterized by a porous and interconnected network structure. Ag nanoparticles were deposited on Cu2O particles to develop a metal-based semiconductor to increase the catalytic efficiency of the system and the separation efficiency of the photogenerated carriers. Cellulose-derived carbon beads (CBs) can also be used as electron storage libraries which can capture electrons released from the conduction band of Cu2O. The results revealed that the maximum catalytic degradation efficiency of the composite photocatalyst for the antibiotic levofloxacin was 99.02 %. The Langmuir-Hinshelwood model was used to study the reaction kinetics, and the process of photodegradation followed first-order kinetics. The maximum apparent rate was recorded to be 0.0906 min-1. The mass spectrometry technique showed that levofloxacin degraded into carbon dioxide and water in the presence of the photocatalyst. The results revealed that the easy-to-produce photocatalyst was stable and efficient in levofloxacin removing.
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Affiliation(s)
- Yaoyao Wang
- School of Chemical Engineering and Pharmacy, Key Laboratory of Novel Biomass-based Environmental and Energy Materials in Petroleum and Chemical Industry, Wuhan Institute of Technology, LiuFang Campus, No.206, Guanggu 1st road, Donghu New & High Technology Development Zone, Wuhan 430205, Hubei Province, PR China
| | - Jinhui Yang
- School of Chemical Engineering and Pharmacy, Key Laboratory of Novel Biomass-based Environmental and Energy Materials in Petroleum and Chemical Industry, Wuhan Institute of Technology, LiuFang Campus, No.206, Guanggu 1st road, Donghu New & High Technology Development Zone, Wuhan 430205, Hubei Province, PR China
| | - Zixuan Zhang
- School of Chemical Engineering and Pharmacy, Key Laboratory of Novel Biomass-based Environmental and Energy Materials in Petroleum and Chemical Industry, Wuhan Institute of Technology, LiuFang Campus, No.206, Guanggu 1st road, Donghu New & High Technology Development Zone, Wuhan 430205, Hubei Province, PR China
| | - Pujuan Zhao
- School of Materials Science and Engineering, Zhengzhou University, No.100 Science Avenue, Zhengzhou City 450001, Henan Province, PR China
| | - Yuqing Chen
- School of Chemical Engineering and Pharmacy, Key Laboratory of Novel Biomass-based Environmental and Energy Materials in Petroleum and Chemical Industry, Wuhan Institute of Technology, LiuFang Campus, No.206, Guanggu 1st road, Donghu New & High Technology Development Zone, Wuhan 430205, Hubei Province, PR China
| | - Yi Guo
- Hubei Provincial Engineering Laboratory for Clean Production and High Value Utilization of Bio-based Textile Materials, Wuhan Textile University, Wuhan, China.
| | - Xiaogang Luo
- School of Chemical Engineering and Pharmacy, Key Laboratory of Novel Biomass-based Environmental and Energy Materials in Petroleum and Chemical Industry, Wuhan Institute of Technology, LiuFang Campus, No.206, Guanggu 1st road, Donghu New & High Technology Development Zone, Wuhan 430205, Hubei Province, PR China; School of Materials Science and Engineering, Zhengzhou University, No.100 Science Avenue, Zhengzhou City 450001, Henan Province, PR China.
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Miao B, Qiu Z, Zhen Z, Yang Y, Yang Z, Xiao T, Lv J, Huang S, Wang Y, Ma X. Adsorption and activation of small molecules on boron nitride catalysts. Phys Chem Chem Phys 2024; 26:10494-10505. [PMID: 38517057 DOI: 10.1039/d4cp00103f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/23/2024]
Abstract
Hexagonal boron nitride possesses a unique layered structure, high specific surface area and similar electronic properties as graphene, which makes it not only a promising catalyst support, but also a highly effective metal-free catalyst in the booming field of green chemistry. Reactions involving small molecules (e.g., oxygen, low carbon alkanes, nitrogen and carbon dioxide) have always been a hot topic in catalytic research, especially associated with the adsorption and activation regime of different forms of small molecules on catalysts. In this review, we have investigated the adsorption of different small molecules and the relevant activation mechanisms of four typical chemical bonds (OO, C-H, NN, CO) on hexagonal boron nitride. Recent progress on approaches adopted to enhance the activation capacity such as doping, defect engineering and heterostructuring are summarized, highlighting the potential applications of nonmetallic hexagonal boron nitride catalysts in various reactions. This comprehensive investigation offers a reference point for the enhanced mechanistic understanding and future design of effective and sustainable catalytic systems based on boron nitride.
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Affiliation(s)
- Baiyu Miao
- Key Laboratory for Green Chemical Technology of Ministry of Education, Collaborative Innovation Center of Chemical Science and Engineering, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China.
| | - Zhihuan Qiu
- Zhejiang Institute of Tianjin University, Ningbo Key Laboratory of Green Petrochemical Carbon Emission Reduction Technology and Equipment, Ningbo, Zhejiang 315200, China
| | - Ziheng Zhen
- Key Laboratory for Green Chemical Technology of Ministry of Education, Collaborative Innovation Center of Chemical Science and Engineering, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China.
| | - Youwei Yang
- Key Laboratory for Green Chemical Technology of Ministry of Education, Collaborative Innovation Center of Chemical Science and Engineering, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China.
| | - Zhibo Yang
- Key Laboratory for Green Chemical Technology of Ministry of Education, Collaborative Innovation Center of Chemical Science and Engineering, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China.
| | - Tiantian Xiao
- Key Laboratory for Green Chemical Technology of Ministry of Education, Collaborative Innovation Center of Chemical Science and Engineering, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China.
| | - Jing Lv
- Key Laboratory for Green Chemical Technology of Ministry of Education, Collaborative Innovation Center of Chemical Science and Engineering, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China.
| | - Shouying Huang
- Key Laboratory for Green Chemical Technology of Ministry of Education, Collaborative Innovation Center of Chemical Science and Engineering, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China.
- Zhejiang Institute of Tianjin University, Ningbo Key Laboratory of Green Petrochemical Carbon Emission Reduction Technology and Equipment, Ningbo, Zhejiang 315200, China
| | - Yue Wang
- Key Laboratory for Green Chemical Technology of Ministry of Education, Collaborative Innovation Center of Chemical Science and Engineering, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China.
- Haihe Laboratory of Sustainable Chemical Transformations, Tianjin 300192, China
- Joint School of National University of Singapore and Tianjin University, International Campus of Tianjin University, Binhai New City, Fuzhou 350207, China
| | - Xinbin Ma
- Key Laboratory for Green Chemical Technology of Ministry of Education, Collaborative Innovation Center of Chemical Science and Engineering, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China.
- Haihe Laboratory of Sustainable Chemical Transformations, Tianjin 300192, China
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5
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Dash S, Tripathy SP, Subudhi S, Behera P, Mishra BP, Panda J, Parida K. A Visible Light-Driven α-MnO 2/UiO-66-NH 2 S-Scheme Photocatalyst toward Ameliorated Oxy-TCH Degradation and H 2 Evolution. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2024; 40:4514-4530. [PMID: 38350006 DOI: 10.1021/acs.langmuir.3c04050] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/15/2024]
Abstract
Photocatalytic hydrogen production and pollutant degradation using a heterogeneous photocatalyst remains an alternative route for mitigating the impending pollution and energy crisis. Hence, the development of cost-effective and environmentally friendly semiconducting materials with high solar light captivation nature is imperative. To overcome this challenge, α-MnO2 nanorod (NR)-modified MOF UiO-66-NH2 (UNH) was prepared via a facile solvothermal method, which is efficient toward H2 evolution and oxy-tetracycline hydrochloride (O-TCH) degradation. The field-emission scanning electron microscopy (FESEM) and high-resolution transmission electron microscopy (HR-TEM) results of the α-MnO2@UNH (MnU) hybrid reveals its nanorod embedded in MOF matrix, and the X-ray photoelectron spectroscopy (XPS) result confirms the interaction of UNH moiety with α-MnO2 NRs. Additionally, the outstanding separation of photogenerated excitons and the charge-transfer efficacy are further validated by photoluminescence (PL), time-resolved photoluminescence (TRPL), electrochemical impedance spectroscopy (EIS), and transient photocurrent analysis, which are the key causes for photoactivity augmentation in the MnU composites. The MnU-2 composite shows a superior O-TCH degradation efficiency of 93.23% and an excellent H2 production rate of about 410.6 μmol h-1 upon light irradiation. This study provides significant evidence in favor of the suggested mediator-free S-scheme-adapted charge migration path, and it effectively explains the enhanced exciton separation leading to extraordinary catalytic efficiency of the proposed composite.
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Affiliation(s)
- Srabani Dash
- Centre for Nanoscience and Nanotechnology, Siksha 'O' Anusnadhan (Deemed to be University), Bhubaneswar 751030, Odisha, India
| | - Suraj Prakash Tripathy
- Centre for Nanoscience and Nanotechnology, Siksha 'O' Anusnadhan (Deemed to be University), Bhubaneswar 751030, Odisha, India
| | - Satyabrata Subudhi
- Department of Chemical Engineering, Indian Institute of Technology Kanpur, Kanpur 208016, Uttar Pradesh, India
| | - Pragyandeepti Behera
- Centre for Nanoscience and Nanotechnology, Siksha 'O' Anusnadhan (Deemed to be University), Bhubaneswar 751030, Odisha, India
| | | | - Jayashree Panda
- Centre for Nanoscience and Nanotechnology, Siksha 'O' Anusnadhan (Deemed to be University), Bhubaneswar 751030, Odisha, India
| | - Kulamani Parida
- Centre for Nanoscience and Nanotechnology, Siksha 'O' Anusnadhan (Deemed to be University), Bhubaneswar 751030, Odisha, India
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6
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Gbogbo S, Nyankson E, Agyei-Tuffour B, Adofo YK, Mensah B. Multicomponent Photocatalytic-Dispersant System for Oil Spill Remediation. ACS OMEGA 2024; 9:8797-8809. [PMID: 38434850 PMCID: PMC10905576 DOI: 10.1021/acsomega.3c05982] [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: 08/15/2023] [Revised: 01/25/2024] [Accepted: 02/06/2024] [Indexed: 03/05/2024]
Abstract
In the present work, the potential application of a fabricated halloysite nanotubes-Ag-TiO2 (HNT-Ag-TiO2) composite loaded with a binary surfactant mixture made up of lecithin and Tween 80 (LT80) in remediating oil spillages was examined. The as-prepared Ag-TiO2 that was used in the fabrication of the HNT-Ag-TiO2-LT80 composite was characterized by X-ray diffraction, Raman spectroscopy, UV-vis and diffuse reflectance spectroscopy, CV analyses, and SEM-EDX. The synthesized composite was also characterized by thermogravimetric analysis, Fourier-transform infrared spectroscopy, and scanning electron microscopy-energy dispersive X-ray spectroscopy. The synthesized composite was active in both the UV and visible light regions of the electromagnetic spectrum. The oil-remediating potential of the as-prepared composite was examined on crude oil, and aromatics and asphaltene fractions of crude oil. The composite was able to reduce the surface tension, form stable emulsions and smaller oil droplet sizes, and achieve a high dispersion effectiveness of 91.5%. A mixture of each of the crude oil and its fractions and HNT-Ag-TiO2-LT80 was subjected to photodegradation under UV light irradiation. The results from the GC-MS and UV-vis analysis of the photodegraded crude oil revealed that the photocatal composite was able to photodegrade the crude oil, aromatics, and asphaltene fractions of crude oil with the formation of intermediate photodegradation products depicting that the HNT-Ag-TiO2-LT80 has a potential as an oil spill remediation material.
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Affiliation(s)
- Selassie Gbogbo
- Department of Materials Science
and Engineering, University of Ghana, Legon, LG 77 Accra, Ghana
| | - Emmanuel Nyankson
- Department of Materials Science
and Engineering, University of Ghana, Legon, LG 77 Accra, Ghana
| | - Benjamin Agyei-Tuffour
- Department of Materials Science
and Engineering, University of Ghana, Legon, LG 77 Accra, Ghana
| | - Yaw Kwakye Adofo
- Department of Materials Science
and Engineering, University of Ghana, Legon, LG 77 Accra, Ghana
| | - Bismark Mensah
- Department of Materials Science
and Engineering, University of Ghana, Legon, LG 77 Accra, Ghana
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Yang D, Pu H, Dai P, Jiang W, Yi Y, Zhang T, Zhang S, Guo X, Li Y. Mechanism of p-Type Heteroatom Doping of Lithium Stannate for the Photodegradation of 2,4-Dichlorophenol: Enhanced Hole Oxidative Capability and Concentrations. Inorg Chem 2024; 63:1236-1246. [PMID: 38174906 DOI: 10.1021/acs.inorgchem.3c03636] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2024]
Abstract
A systematic evaluation of enhancing photocatalysis via aliovalent cation doping is conducted. Cation In3+, being p-type-doped, was chosen to substitute the Sn site (Sn4+) in Li2SnO3, and the photodegradation of 2,4-dichlorophenol was applied as a model reaction. Specifically, Li2Sn0.90In0.10O3 exhibited superior catalytic performance; the photodegradation efficiency reached about 100% within only 12 min. This efficiency is far greater than that of pure Li2SnO3 under identical conditions. Density functional theory calculations reveal that introducing In3+ increased the electron mobility, yet decreased the hole mobility, leading to photogenerated carrier separation. However, photoluminescence and time-resolved photoluminescence suggest that In3+ induced nonradiative coupling in the matrix, reducing the photogenerated carrier separation ratio compared with that of Li2SnO3. The optical band gap of Li2Sn0.90In0.10O3 was almost unchanged compared with that of Li2SnO3 via ultraviolet-visible absorption. The increased photocatalytic efficiency was ascribed to the lower valence band position and enhanced hole concentrations by valence band X-ray photoelectron spectroscopy and electrochemical measurements. Finally, a 2,4-dichlorophenol degradation pathway, an intermediate toxicity assessment, and a photocatalytic mechanism were proposed. This work offers insights into designing and optimizing semiconductor photocatalysts with high performance.
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Affiliation(s)
- Dingfeng Yang
- College of Chemistry and Chemical Engineering, Chongqing University of Technology, 69 Hongguang Rd., Lijiatuo, Banan District, Chongqing 400054, People's Republic of China
- Chongqing Precision Medicine Industrial Technology Research Institute, Chongqing 400799, People's Republic of China
- College of Chemistry and Chemical Engineering, Chongqing University, Chongqing 400044, People's Republic of China
| | - Hongzheng Pu
- College of Chemistry and Chemical Engineering, Chongqing University of Technology, 69 Hongguang Rd., Lijiatuo, Banan District, Chongqing 400054, People's Republic of China
| | - Peng Dai
- Department of Biological and Chemical Engineering, Chongqing University of Education, Chongqing 400067, People's Republic of China
| | - Wen Jiang
- Department of Biological and Chemical Engineering, Chongqing University of Education, Chongqing 400067, People's Republic of China
| | - Yuanxue Yi
- Chongqing Precision Medicine Industrial Technology Research Institute, Chongqing 400799, People's Republic of China
| | - Tao Zhang
- Department of Biological and Chemical Engineering, Chongqing University of Education, Chongqing 400067, People's Republic of China
| | - Shuming Zhang
- Department of Biological and Chemical Engineering, Chongqing University of Education, Chongqing 400067, People's Republic of China
| | - Xichuan Guo
- Department of Biological and Chemical Engineering, Chongqing University of Education, Chongqing 400067, People's Republic of China
| | - Yuanyuan Li
- Department of Biological and Chemical Engineering, Chongqing University of Education, Chongqing 400067, People's Republic of China
- Chongqing Precision Medicine Industrial Technology Research Institute, Chongqing 400799, People's Republic of China
- College of Chemistry and Chemical Engineering, Chongqing University, Chongqing 400044, People's Republic of China
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Gao X, Jian S, Wang W, Li B, Huang J, Lei Y, Wang D. Study on Photochemical Properties of a Sr-SnS 2/CaIn 2S 4 Heterostructure to Improve Cr(VI) Removal. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2023; 39:10542-10552. [PMID: 37463864 DOI: 10.1021/acs.langmuir.3c01071] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/20/2023]
Abstract
Compound semiconductor photocatalysis technology is considered to be a promising treatment for solving water problems efficiently. The point of designing high-efficiency catalysts is to optimize the band gap structure and facilitate the separation of charge carriers by establishing new electron migration pathways. Recently, 3D porous CaIn2S4 was found to have good photocatalytic ability. However, the quick recombination and agglomeration of carriers still limit its application. Herein, we prepared a heterostructure by introducing 2D Sr-doped SnS2 to 3D CaIn2S4 by a hydrothermal synthesis method. The optimal dosage of Sr-SnS2 is 3%, and the photocatalytic Cr(VI) removal efficiency of 3% Sr-SnS2/CaIn2S4 (SSCS-3) is 5.82 and 10.83 times those of pure CaIn2S4 and SnS2, respectively. According to the results of characterization tests and calculation verification, we inferred that the enhanced photocatalytic removal of Cr(VI) is due to the introduction of Sr-SnS2 that can promote the rapid transfer of photogenerated electrons to the surface of CaIn2S4, and the heterostructure formed between 2D Sr-SnS2 and 3D CaIn2S4 can also provide abundant reaction sites. The promotion of carrier separation is mainly due to the formation of a built-in electric field of the Sr-SnS2/CaIn2S4 heterostructure. This work provides new ideas and technologies for the treatment of Cr(VI) in wastewater.
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Affiliation(s)
- Xin Gao
- School of Materials Science and Engineering, Wuhan University of Technology, Wuhan 430070,China
| | - Shouwei Jian
- School of Materials Science and Engineering, Wuhan University of Technology, Wuhan 430070,China
- State Key Laboratory of Silicate Building Materials, Wuhan University of Technology, Wuhan430070,China
| | - Weizhen Wang
- School of Materials Science and Engineering, Wuhan University of Technology, Wuhan 430070,China
| | - Baodong Li
- School of Materials Science and Engineering, Wuhan University of Technology, Wuhan 430070,China
| | - Jianxiang Huang
- School of Materials Science and Engineering, Wuhan University of Technology, Wuhan 430070,China
| | - Yuting Lei
- School of Materials Science and Engineering, Wuhan University of Technology, Wuhan 430070,China
| | - Danfeng Wang
- School of Materials Science and Engineering, Wuhan University of Technology, Wuhan 430070,China
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9
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Zhou XK, Li Y, Luo PP, Lu TB. Synergy of Surface Phosphates and Oxygen Vacancies Enables Efficient Photocatalytic Methane Conversion at Room Temperature. ACS APPLIED MATERIALS & INTERFACES 2023. [PMID: 37467491 DOI: 10.1021/acsami.3c06376] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/21/2023]
Abstract
Room-temperature photocatalytic conversion of CH4 into liquid oxygenates with O2/H2O provides an appealing route for sustainable chemical industry, which, however, suffers from poor efficiency due to the undesired carrier kinetics and low yield of reactive oxygen species of the currently available photocatalysts. Here, we report an effective surface engineering strategy where concurrent constructions of oxygen vacancies and phosphate sites on TiO2 nanosheets address the above challenge. The surface oxygen vacancies and phosphates are respective acceptors of photogenerated electrons and holes for promoted separation and migration of charge carriers. Moreover, in addition to the facilitated activation of O2 to •OH by electrons at oxygen vacancies, the surface phosphates also facilely adsorb H2O via hydrogen bonds and thus effectively transfer holes to H2O for enhanced •OH production, thereby boosting CH4 conversion. As a result, compared with TiO2 sheets with only oxygen vacancies, a 2.8 times improvement in liquid oxygenate production with near-unity selectivity is achieved by virtue of the synergy of surface oxygen vacancies and phosphate sites, together with an unprecedent quantum efficiency of 19.8% under 365 nm irradiation.
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Affiliation(s)
- Xin-Ke Zhou
- MOE International Joint Laboratory of Materials Microstructure, Institute for New Energy Materials and Low Carbon Technologies, School of Materials Science & Engineering, Tianjin University of Technology, Tianjin 300384, China
| | - Yu Li
- MOE International Joint Laboratory of Materials Microstructure, Institute for New Energy Materials and Low Carbon Technologies, School of Materials Science & Engineering, Tianjin University of Technology, Tianjin 300384, China
| | - Pei-Pei Luo
- MOE International Joint Laboratory of Materials Microstructure, Institute for New Energy Materials and Low Carbon Technologies, School of Materials Science & Engineering, Tianjin University of Technology, Tianjin 300384, China
| | - Tong-Bu Lu
- MOE International Joint Laboratory of Materials Microstructure, Institute for New Energy Materials and Low Carbon Technologies, School of Materials Science & Engineering, Tianjin University of Technology, Tianjin 300384, China
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Maximization of the photocatalytic degradation of Diclofenac using polymeric g-C3N4 by tuning the precursor and the synthetic protocol. Catal Today 2023. [DOI: 10.1016/j.cattod.2023.114075] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/03/2023]
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Establishing a water-to-energy platform via dual-functional photocatalytic and photoelectrocatalytic systems: A comparative and perspective review. Adv Colloid Interface Sci 2022; 309:102793. [DOI: 10.1016/j.cis.2022.102793] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2022] [Revised: 08/25/2022] [Accepted: 09/29/2022] [Indexed: 11/20/2022]
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Paul R, Warkad IR, Arulkumar S, Parthiban S, Darji HR, Naushad M, Kadam RG, Gawande MB. Facile synthesis of nanostructured TiO2-SiO2 powder for selective photocatalytic oxidation of alcohols to carbonyl compounds. MOLECULAR CATALYSIS 2022. [DOI: 10.1016/j.mcat.2022.112566] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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