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Yang B, Jin F, Pan X, Jin X, Jin Z. Directional Electron Transfer in CuInS 2/Mo 2S 3 S-Scheme Heterojunctions for Efficient Photocatalytic Hydrogen Production. ACS APPLIED MATERIALS & INTERFACES 2024; 16:36333-36342. [PMID: 38950183 DOI: 10.1021/acsami.4c05199] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/03/2024]
Abstract
The photocatalytic conversion of solar energy to hydrogen is a promising pathway toward clean fuel production, yet it requires advancement to meet industrial-scale demands. This study demonstrates that the interface engineering of heterojunctions is a viable strategy to enhance the photocatalytic performance of CuInS2/Mo2S3. Specifically, CuInS2 nanoparticles are incorporated into Mo2S3 nanospheres via a wet impregnation technique to form an S-scheme heterojunction. This configuration facilitates directional electron transfer, optimizing electron utilization and fostering efficient photocatalytic processes. The presence of an S-scheme heterojunction in CuInS2/Mo2S3 is corroborated by in situ irradiation X-ray photoelectron spectroscopy and density functional theory analyses, which confirm the directional movement of electrons at the interface of heterojunction. Comprehensive characterization of the heterojunction photocatalyst, including phase, structural, and photoelectric property assessments, reveals a significant specific surface area and light absorption capability. These attributes augment the number of active sites available in CuInS2/Mo2S3 for proton reduction reactions. This study offers a pragmatic approach for designing metal sulfide-based photocatalysts via strategic interface engineering, potentially advancing the field toward sustainable hydrogen production.
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Affiliation(s)
- Bolin Yang
- School of Chemistry and Chemical Engineering, Ningxia Key Laboratory of Solar Chemical Conversion Technology, Key Laboratory for Chemical Engineering and Technology, State Ethnic Affairs Commission, North Minzu University, Yinchuan 750021, P.R.China
| | - Fei Jin
- School of Chemistry and Chemical Engineering, Ningxia Key Laboratory of Solar Chemical Conversion Technology, Key Laboratory for Chemical Engineering and Technology, State Ethnic Affairs Commission, North Minzu University, Yinchuan 750021, P.R.China
| | - Xinyu Pan
- Carbon Peak and Neutrality Policy Studies Division, National Energy Conservation Center, Beijing 100045, China
| | - Xiaoran Jin
- School of Chemistry and Chemical Engineering, Ningxia Key Laboratory of Solar Chemical Conversion Technology, 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, Ningxia Key Laboratory of Solar Chemical Conversion Technology, Key Laboratory for Chemical Engineering and Technology, State Ethnic Affairs Commission, North Minzu University, Yinchuan 750021, P.R.China
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Li F, Liao B, Shen J, Ke J, Zhang R, Wang Y, Niu Y. Enhancing Photocatalytic Activities for Sustainable Hydrogen Evolution on Structurally Matched CuInS 2/ZnIn 2S 4 Heterojunctions. Molecules 2024; 29:2447. [PMID: 38893323 PMCID: PMC11173830 DOI: 10.3390/molecules29112447] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2024] [Revised: 05/14/2024] [Accepted: 05/17/2024] [Indexed: 06/21/2024] Open
Abstract
Effective charge separation and migration pose a critical challenge in the field of solar-driven hydrogen production. In this work, a Z-scheme structured CuInS2/ZnIn2S4 heterojunction was successfully fabricated through a two-step hydrothermal synthesis method to significantly enhance the efficiency of solar-to-hydrogen energy conversion. Structural characterization revealed that the lattice-matched CuInS2/ZnIn2S4 heterojunction exhibits an enlarged interfacial contact area, which facilitates the transfer and separation of photogenerated charges. Microscopic analysis indicated that the CuInS2/ZnIn2S4 composite material has a tightly interwoven interface and a morphology resembling small sugar cubes. Photoelectrochemical spectroscopy analysis demonstrated that the heterojunction structure effectively enhances visible light absorption and charge separation efficiency, leading to an improvement in photocatalytic activity. Hydrogen production experimental data indicated that the CuInS2/ZnIn2S4 heterojunction photocatalyst prepared with a CuInS2 content of 20 wt% exhibits the highest hydrogen evolution rate, reaching 284.9 μmol·g-1·h-1. Moreover, this photocatalyst maintains robust photocatalytic stability even after three consecutive usage cycles. This study demonstrated that the Z-scheme CuInS2/ZnIn2S4 heterojunction photocatalyst exhibits enhanced hydrogen evolution efficiency, offering an effective structural design for harnessing solar energy to obtain hydrogen fuel. Therefore, this heterojunction photocatalyst is a promising candidate for practical applications in solar hydrogen production.
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Affiliation(s)
- Fuying Li
- School of Resources & Chemical Engineering, Sanming University, Sanming 365004, China; (F.L.)
- Institute of Engineering and Technology Management, Krirk University, Bangkok 10220, Thailand
| | - Boiyee Liao
- Institute of Engineering and Technology Management, Krirk University, Bangkok 10220, Thailand
| | - Jinni Shen
- State Key Laboratory of Photocatalysis on Energy and Environment, Fuzhou University, Fuzhou 350007, China
| | - Junni Ke
- School of Resources & Chemical Engineering, Sanming University, Sanming 365004, China; (F.L.)
| | - Rongxin Zhang
- School of Resources & Chemical Engineering, Sanming University, Sanming 365004, China; (F.L.)
| | - Yueqi Wang
- Fujian Universities Engineering Research Center of Reactive Distillation Technology, Fuzhou University, Fuzhou 350007, China
| | - Yu Niu
- School of Resources & Chemical Engineering, Sanming University, Sanming 365004, China; (F.L.)
- Institute of Engineering and Technology Management, Krirk University, Bangkok 10220, Thailand
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Banyal R, Khan AAP, Sudhaik A, Sonu, Raizada P, Khan A, Singh P, Rub MA, Azum N, Alotaibi MM, Asiri AM. Emergence of CuInS 2 derived photocatalyst for environmental remediation and energy conversion. ENVIRONMENTAL RESEARCH 2023; 238:117288. [PMID: 37797665 DOI: 10.1016/j.envres.2023.117288] [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: 01/17/2023] [Revised: 09/27/2023] [Accepted: 10/01/2023] [Indexed: 10/07/2023]
Abstract
Hydrogen production, catalytic organic synthesis, carbon dioxide reduction, environmental purification, and other major fields have all adopted photocatalytic technologies due to their eco-friendliness, ease of use, and reliance on sunlight as the driving force. Photocatalyst is the key component of photocatalytic technology. Thus, it is of utmost importance to produce highly efficient, stable, visible-light-responsive photocatalysts. CIS stands out among other visible-light-response photocatalysts for its advantageous combination of easy synthesis, non-toxicity, high stability, and suitable band structure. In this study, we took a brief glance at the synthesis techniques for CIS after providing a quick introduction to the fundamental semiconductor features, including the crystal and band structures of CIS. Then, we discussed the ways doping, heterojunction creation, p-n heterojunction, type-II heterojunction, and Z-scheme may be used to modify CIS's performance. Subsequently, the applications of CIS towards pollutant degradation, CO2 reduction, water splitting, and other toxic pollutants remediation are reviewed in detail. Finally, several remaining problems with CIS-based photocatalysts are highlighted, along with future potential for constructing more superior photocatalysts.
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Affiliation(s)
- Rahul Banyal
- School of Advanced Chemical Sciences, Shoolini University, Solan, HP, 173229, India
| | - Aftab Aslam Parwaz Khan
- Center of Excellence for Advanced Materials Research, King Abdulaziz University, Jeddah 21589, Saudi Arabia.
| | - Anita Sudhaik
- School of Advanced Chemical Sciences, Shoolini University, Solan, HP, 173229, India
| | - Sonu
- School of Advanced Chemical Sciences, Shoolini University, Solan, HP, 173229, India
| | - Pankaj Raizada
- School of Advanced Chemical Sciences, Shoolini University, Solan, HP, 173229, India
| | - Anish Khan
- Center of Excellence for Advanced Materials Research, King Abdulaziz University, Jeddah 21589, Saudi Arabia
| | - Pardeep Singh
- School of Advanced Chemical Sciences, Shoolini University, Solan, HP, 173229, India.
| | - Malik A Rub
- Center of Excellence for Advanced Materials Research, King Abdulaziz University, Jeddah 21589, Saudi Arabia
| | - Naved Azum
- Center of Excellence for Advanced Materials Research, King Abdulaziz University, Jeddah 21589, Saudi Arabia
| | - Maha M Alotaibi
- Center of Excellence for Advanced Materials Research, King Abdulaziz University, Jeddah 21589, Saudi Arabia
| | - Abdullah M Asiri
- Center of Excellence for Advanced Materials Research, King Abdulaziz University, Jeddah 21589, Saudi Arabia; Chemistry Department, Faculty of Science, King Abdulaziz University, Jeddah 21589, Saudi Arabia
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Chen B, Zheng W, Chun F, Xu X, Zhao Q, Wang F. Synthesis and hybridization of CuInS 2 nanocrystals for emerging applications. Chem Soc Rev 2023; 52:8374-8409. [PMID: 37947021 DOI: 10.1039/d3cs00611e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2023]
Abstract
Copper indium sulfide (CuInS2) is a ternary A(I)B(III)X(VI)2-type semiconductor featuring a direct bandgap with a high absorption coefficient. In attempts to explore their practical applications, nanoscale CuInS2 has been synthesized with crystal sizes down to the quantum confinement regime. The merits of CuInS2 nanocrystals (NCs) include wide emission tunability, a large Stokes shift, long decay time, and eco-friendliness, making them promising candidates in photoelectronics and photovoltaics. Over the past two decades, advances in wet-chemistry synthesis have achieved rational control over cation-anion reactivity during the preparation of colloidal CuInS2 NCs and post-synthesis cation exchange. The precise nano-synthesis coupled with a series of hybridization strategies has given birth to a library of CuInS2 NCs with highly customizable photophysical properties. This review article focuses on the recent development of CuInS2 NCs enabled by advanced synthetic and hybridization techniques. We show that the state-of-the-art CuInS2 NCs play significant roles in optoelectronic and biomedical applications.
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Affiliation(s)
- Bing Chen
- College of Electronic and Optical Engineering & College of Flexible Electronics (Future Technology), Nanjing University of Posts and Telecommunications, 9 Wenyuan Road, Nanjing, Jiangsu 210023, China.
- Department of Materials Science and Engineering, City University of Hong Kong, 83 Tat Chee Avenue, Kowloon 999077, Hong Kong SAR, China.
| | - Weilin Zheng
- Department of Materials Science and Engineering, City University of Hong Kong, 83 Tat Chee Avenue, Kowloon 999077, Hong Kong SAR, China.
- City University of Hong Kong Shenzhen Research Institute, Shenzhen 518057, China
| | - Fengjun Chun
- Department of Materials Science and Engineering, City University of Hong Kong, 83 Tat Chee Avenue, Kowloon 999077, Hong Kong SAR, China.
- City University of Hong Kong Shenzhen Research Institute, Shenzhen 518057, China
| | - Xiuwen Xu
- College of Electronic and Optical Engineering & College of Flexible Electronics (Future Technology), Nanjing University of Posts and Telecommunications, 9 Wenyuan Road, Nanjing, Jiangsu 210023, China.
| | - Qiang Zhao
- College of Electronic and Optical Engineering & College of Flexible Electronics (Future Technology), Nanjing University of Posts and Telecommunications, 9 Wenyuan Road, Nanjing, Jiangsu 210023, China.
- State Key Laboratory of Organic Electronics and Information Displays, Nanjing University of Posts and Telecommunications, 9 Wenyuan Road, Nanjing, Jiangsu 210023, China
| | - Feng Wang
- Department of Materials Science and Engineering, City University of Hong Kong, 83 Tat Chee Avenue, Kowloon 999077, Hong Kong SAR, China.
- City University of Hong Kong Shenzhen Research Institute, Shenzhen 518057, China
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Qi Z, Chen J, Li Q, Wang N, Carabineiro SAC, Lv K. Increasing the Photocatalytic Hydrogen Generation Activity of CdS Nanorods by Introducing Interfacial and Polarization Electric Fields. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2023; 19:e2303318. [PMID: 37475483 DOI: 10.1002/smll.202303318] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/19/2023] [Revised: 06/27/2023] [Indexed: 07/22/2023]
Abstract
Cadmium sulfide (CdS) is a photocatalyst widely used for efficient H2 production under visible light irradiation, due to its narrow bandgap and suitable conduction band position. However, the fast recombination of carriers results in their low utilization. In order to improve photocatalytic hydrogen production, it reports the successful introduction of metallic Cd and S vacancies on CdS nanorods (CdS NRs) by a facile in situ chemical reduction method, using a thermal treatment process. This procedure generates interfacial and polarization electric fields, that significantly improve the photocatalytic hydrogen production performance of CdS NRs in sodium sulfide and sodium sulfite aqueous solutions, under visible light irradiation (λ >420 nm). The introduction of these electric fields is believed to improve charge separation and facilitate faster interfacial charge migration, resulting in a significantly optimized catalyst, with a photocatalytic hydrogen evolution rate of up to 10.6 mmol-1 g-1 h-1 with apparent quantum efficiency (AQE) of 12.1% (420 nm), which is 8.5 times higher than that of CdS. This work provides a useful method to introduce metallic and S vacancies on metal sulfide photocatalysts to build local polarization and interfacial electric fields for high-performance photocatalytic H2 production.
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Affiliation(s)
- Zheng Qi
- College of Resources and Environment, South-Central Minzu University, Wuhan, 430074, P. R. China
| | - Jinbao Chen
- College of Resources and Environment, South-Central Minzu University, Wuhan, 430074, P. R. China
| | - Qin Li
- College of Resources and Environment, South-Central Minzu University, Wuhan, 430074, P. R. China
| | - Ning Wang
- Faculty of Environment and Life, Beijing University of Technology, Beijing, 100124, P. R. China
| | - Sónia A C Carabineiro
- Department of Chemistry, NOVA School of Science and Technology, Universidade NOVA de Lisboa, Caparica, 2829-516, Portugal
| | - Kangle Lv
- College of Resources and Environment, South-Central Minzu University, Wuhan, 430074, P. R. China
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Bian C, Wang Y, Yi Y, Shao S, Sun P, Xiao Y, Wang W, Dong X. Enhanced photocatalytic activity of S-doped graphitic carbon nitride hollow microspheres: Synergistic effect, high-concentration antibiotic elimination and antibacterial behavior. J Colloid Interface Sci 2023; 643:256-266. [PMID: 37068359 DOI: 10.1016/j.jcis.2023.04.034] [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: 01/12/2023] [Revised: 03/15/2023] [Accepted: 04/10/2023] [Indexed: 05/12/2023]
Abstract
For the past few years, graphitic carbon nitride (g-C3N4) has been widely used to eliminate environmental pollutants, but limited active site on surface and low separation/migration ability suppress its practical uses. Herein, we adopted a supramolecular self-assembly route followed with S doping to synthesize S-doped g-C3N4 with a hollow microsphere composition (SCNHM), where the shell was demonstrated to compose of ultrathin nanosheets. The unique structural characteristics endow the SCNHM with high specific surface area (∼81 m2 g-1) to provide abundant reaction sites and enhanced light-harvesting due to the light-scattering effect of hollow structure. Moreover, the S dopant meliorated the electronic structure to narrow the bandgap and promoted the charge separation/transfer capability. With this synergistic effect, the SCNHM presented greatly improved photocatalytic activity for degrading tetracycline hydrochloride (TC) compared to the CN, SCN and CNHM samples. This photocatalyst could eliminate high-concentration TC (50 mg L-1) in 18 min, and the 30 min removal efficiencies of 100 mg L-1 and 200 mg L-1 reached 92 % and 60 %, which is much better than the reported photocatalysts in literatures (usually ≤ 20 mg L-1). Additionally, the good photocatalytic durability was confirmed and the degradation pathway of TC was proposed. Furthermore, the SCNHM was proved to meanwhile possess superior performance for inactivating the typical Gram-positive bacterium of Staphylococcus aureus (S. aureus) and the typical Gram-negative bacterium of Escherichia coli (E. coli). Finally, based on determination of band alignment and detection of active species, a plausible photocatalytic mechanism was proposed.
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Affiliation(s)
- Changhao Bian
- Department of Chemistry, Key Laboratory of Surface & Interface Science of Polymer Materials of Zhejiang Province, Zhejiang Sci-Tech University, Hangzhou 310018, China
| | - Yanyan Wang
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, MOA Laboratory of Quality & Safety Risk Assessment for Agro-products (Hangzhou), Institute of Agro-product Safety and Nutrition, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China
| | - Yuyan Yi
- Department of Chemistry, Key Laboratory of Surface & Interface Science of Polymer Materials of Zhejiang Province, Zhejiang Sci-Tech University, Hangzhou 310018, China
| | - Shengyu Shao
- Department of Chemistry, Key Laboratory of Surface & Interface Science of Polymer Materials of Zhejiang Province, Zhejiang Sci-Tech University, Hangzhou 310018, China
| | - Pengfei Sun
- Department of Chemistry, Key Laboratory of Surface & Interface Science of Polymer Materials of Zhejiang Province, Zhejiang Sci-Tech University, Hangzhou 310018, China
| | - Yingping Xiao
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, MOA Laboratory of Quality & Safety Risk Assessment for Agro-products (Hangzhou), Institute of Agro-product Safety and Nutrition, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China
| | - Wen Wang
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, MOA Laboratory of Quality & Safety Risk Assessment for Agro-products (Hangzhou), Institute of Agro-product Safety and Nutrition, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China.
| | - Xiaoping Dong
- Department of Chemistry, Key Laboratory of Surface & Interface Science of Polymer Materials of Zhejiang Province, Zhejiang Sci-Tech University, Hangzhou 310018, China.
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Li L, Feng H, Dong Z, Yang T, Xue S. Indium selenide/silver phosphate hollow microsphere S-scheme heterojunctions for photocatalytic hydrogen production with simultaneous degradation of tetracycline. J Colloid Interface Sci 2023; 649:10-21. [PMID: 37331106 DOI: 10.1016/j.jcis.2023.06.067] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2023] [Revised: 05/31/2023] [Accepted: 06/11/2023] [Indexed: 06/20/2023]
Abstract
Designing heterojunction photocatalysts with strong interfacial interactions is an effective way to reduce the recombination of photogenerated charge carriers. Here, silver phosphate (Ag3PO4) nanoparticles are coupled with hollow flower-like indium selenide (In2Se3) microspheres by a facile Ostwald ripening and in-situ growth method, resulting in the construction of In2Se3/Ag3PO4 hollow microsphere step-scheme (S-scheme) heterojunction with a large contact interface. The flower-like In2Se3 with hollow and porous structure provides a large specific surface area and numerous active sites for photocatalytic reactions to take place. The photocatalytic activity was tested by measuring the hydrogen evolution from antibiotic wastewater, and the H2 evolution rate of In2Se3/Ag3PO4 reached 4206.4 µmol g-1h-1 under visible light, which is approximately 2.8 times greater than that of In2Se3. In addition, the amount of tetracycline (TC) degradation when it was used as a sacrificial agent is about 54.4% after 1 h. On the one hand, Se-P chemical bonds act as electron transfer channels in the S-scheme heterojunctions, which can facilitate the migration and separation of photogenerated charge carriers. On the other hand, the S-scheme heterojunctions can retain the useful holes and electrons with higher redox capacities, which is very favorable for the generation of more •OH radicals and the photocatalytic activity is greatly enhanced. This work provides an alternative design approach for photocatalysts toward hydrogen evolution in antibiotic wastewater.
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Affiliation(s)
- Lingwei Li
- College of Science, Donghua University, Shanghai 201620, China
| | - Hange Feng
- College of Science, Donghua University, Shanghai 201620, China; College of Information Science and Technology, Donghua University, Shanghai 201620, China
| | - Zibo Dong
- College of Science, Donghua University, Shanghai 201620, China
| | - Tiantian Yang
- College of Science, Donghua University, Shanghai 201620, China
| | - Shaolin Xue
- College of Science, Donghua University, Shanghai 201620, China.
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Zhang J, Li Y, Gong Y, Zhu C, Zhang L, Tang H, He W, Wang B. Bi(Ⅲ) and Ce(Ⅳ) functionalized carbon nitride photocatalyst for antibiotic degradation: Synthesis, toxicity, and mechanism investigations. CHEMOSPHERE 2023; 333:138888. [PMID: 37209849 DOI: 10.1016/j.chemosphere.2023.138888] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/05/2022] [Revised: 04/28/2023] [Accepted: 05/06/2023] [Indexed: 05/22/2023]
Abstract
Graphite-phase carbon nitride (g-C3N4) has shown great potential for antibiotic wastewater treatment due to its unique electronic structure and corresponding to visible light. In this study, a series of Bi/Ce/g-C3N4 photocatalysts with different doping amount were developed by direct calcination method for Rhodamine B and sulfamethoxazole photocatalytic degradation. The experiment result shows that the photocatalytic performance of Bi/Ce/g-C3N4 catalysts were better than that of single component samples. Under the optimal experimental conditions, the degradation rates of RhB (20 min) and SMX (120 min) by 3Bi/Ce/g-C3N4 reached 98.3% and 70.5%, respectively. The theoretical calculation results of DFT show that after Bi and Ce doping modification, the band-gap width of g-C3N4 is reduced to 1.215 eV and carrier migration rate is greatly improved. The enhanced photocatalytic activity was mainly attributed to the capture of electrons after doping modification, which inhibition of photogenerated carriers recombination and reduced the gap width. The cyclic treatment experiment of sulfamethoxazole showed that Bi/Ce/g-C3N4 catalysts had good stability. Ecosar evaluation and leaching toxicity test showed that Bi/Ce/g-C3N4 can be safely used for wastewater treatment. This study provides a perfect strategy for modifying g-C3N4 and a new way to improve the photocatalytic performance.
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Affiliation(s)
- Jian Zhang
- College of Chemical Engineering, Northeast Electric Power University, Jilin, 132012, PR China(2).
| | - Yuanchun Li
- College of Chemical Engineering, Northeast Electric Power University, Jilin, 132012, PR China(2)
| | - Yuanyi Gong
- College of Chemical Engineering, Northeast Electric Power University, Jilin, 132012, PR China(2)
| | - Chuntao Zhu
- College of Chemical Engineering, Northeast Electric Power University, Jilin, 132012, PR China(2)
| | - Lanhe Zhang
- College of Chemical Engineering, Northeast Electric Power University, Jilin, 132012, PR China(2)
| | - Hong Tang
- College of Chemical Engineering, Northeast Electric Power University, Jilin, 132012, PR China(2)
| | - Weihua He
- State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin, 150090, PR China(2).
| | - Bing Wang
- College of Chemical Engineering, Northeast Electric Power University, Jilin, 132012, PR China(2)
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9
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Copper indium sulfide quantum dots in photocatalysis. J Colloid Interface Sci 2023; 638:193-219. [PMID: 36738544 DOI: 10.1016/j.jcis.2023.01.107] [Citation(s) in RCA: 16] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2022] [Revised: 01/17/2023] [Accepted: 01/22/2023] [Indexed: 01/27/2023]
Abstract
Since the advent of photocatalytic technology, scientists have been searching for semiconductor materials with high efficiency in solar energy utilization and conversion to chemical energy. Recently, the development of quantum dot (QD) photocatalysts has attracted much attention because of their unique characteristics: small size, quantum effects, strong surface activity, and wide photoresponse range. Among ternary chalcogenide semiconductors, CuInS2 QDs are increasingly examined in the field of photocatalysis due to their high absorption coefficients, good matching of the absorption range with sunlight spectrum, long lifetimes of photogenerated electron-hole pairs and environmental sustainability. In this review paper, the structural and electronic properties, synthesis methods and various photocatalytic applications of CuInS2 QDs are systematically expounded. The current research status on the photocatalytic properties of materials based on CuInS2 QD is discussed combined with the existing modification approaches for the enhancement of their performances. Future challenges and new development opportunities of CuInS2 QDs in the field of photocatalysis are then prospected.
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Lin H, Wu J, Zhou F, Zhao X, Lu P, Sun G, Song Y, Li Y, Liu X, Dai H. Graphitic carbon nitride-based photocatalysts in the applications of environmental catalysis. J Environ Sci (China) 2023; 124:570-590. [PMID: 36182164 DOI: 10.1016/j.jes.2021.11.017] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2021] [Revised: 10/28/2021] [Accepted: 11/13/2021] [Indexed: 06/16/2023]
Abstract
Semiconductor photocatalytic technology has shown great prospects in converting solar energy into chemical energy to mitigate energy crisis and solve environmental pollution problems. The key issue is the development of high-efficiency photocatalysts. Various strategies in the state-of-the-art advancements, such as heterostructure construction, heteroatom doping, metal/single atom loading, and defect engineering, have been presented for the graphitic carbon nitride (g-C3N4)-based nanocomposite catalysts to design their surface chemical environments and internal electronic structures to make them more suitable for different photocatalytic applications. In this review, nanoarchitecture design, synthesis methods, photochemical properties, potential photocatalytic applications, and related reaction mechanisms of the modified high-efficiency carbon nitride-based photocatalysts were briefly summarized. The superior photocatalytic performance was identified to be associated with the enhanced visible-light response, fast photoinduced electron-hole separation, efficient charge migration, and increased unsaturated active sites. Moreover, the further advance of the visible-light harvesting and solar-to-energy conversions are proposed.
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Affiliation(s)
- Hongxia Lin
- Hefei Institute for Public Safety Research, Tsinghua University, Hefei 230601, China; Anhui Province Key Laboratory of Human Safety, Hefei 230601, China
| | - Jinmo Wu
- Hefei Institute for Public Safety Research, Tsinghua University, Hefei 230601, China; Anhui Province Key Laboratory of Human Safety, Hefei 230601, China
| | - Fan Zhou
- Hefei Institute for Public Safety Research, Tsinghua University, Hefei 230601, China; Anhui Province Key Laboratory of Human Safety, Hefei 230601, China
| | - Xiaolong Zhao
- Hefei Institute for Public Safety Research, Tsinghua University, Hefei 230601, China; Anhui Province Key Laboratory of Human Safety, Hefei 230601, China
| | - Pengfei Lu
- Hefei Institute for Public Safety Research, Tsinghua University, Hefei 230601, China; Anhui Province Key Laboratory of Human Safety, Hefei 230601, China
| | - Guanghui Sun
- Hefei Institute for Public Safety Research, Tsinghua University, Hefei 230601, China; Anhui Province Key Laboratory of Human Safety, Hefei 230601, China
| | - Yuhan Song
- Hefei Institute for Public Safety Research, Tsinghua University, Hefei 230601, China; Anhui Province Key Laboratory of Human Safety, Hefei 230601, China
| | - Yayun Li
- Hefei Institute for Public Safety Research, Tsinghua University, Hefei 230601, China; Anhui Province Key Laboratory of Human Safety, Hefei 230601, China
| | - Xiaoyong Liu
- Hefei Institute for Public Safety Research, Tsinghua University, Hefei 230601, China; Anhui Province Key Laboratory of Human Safety, Hefei 230601, China
| | - Hongxing Dai
- Beijing Key Laboratory for Green Catalysis and Separation, Key Laboratory of Beijing on Regional Air Pollution Control, Key Laboratory of Advanced Functional Materials, Education Ministry of China, Laboratory of Catalysis Chemistry and Nanoscience, Department of Environmental Chemical Engineering, School of Environmental and Chemical Engineering, Faculty of Environment and Life Science, Beijing University of Technology, Beijing 100124, China.
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11
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He B, Wang Z, Xiao P, Chen T, Yu J, Zhang L. Cooperative Coupling of H 2 O 2 Production and Organic Synthesis over a Floatable Polystyrene-Sphere-Supported TiO 2 /Bi 2 O 3 S-Scheme Photocatalyst. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2022; 34:e2203225. [PMID: 35944441 DOI: 10.1002/adma.202203225] [Citation(s) in RCA: 71] [Impact Index Per Article: 35.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/10/2022] [Revised: 07/15/2022] [Indexed: 06/15/2023]
Abstract
Cooperative coupling of photocatalytic H2 O2 production with organic synthesis has an expansive perspective in converting solar energy into storable chemical energy. However, traditional powder photocatalysts suffer from severe agglomeration, limited light absorption, poor gas reactant accessibility, and reusable difficulty, which greatly hinders their large-scale application. Herein, floatable composite photocatalysts are synthesized by immobilizing hydrophobic TiO2 and Bi2 O3 on lightweight polystyrene (PS) spheres via hydrothermal and photodeposition methods. The floatable photocatalysts are not only solar transparent, but also upgrade the contact between reactants and photocatalysts. Thus, the floatable step-scheme (S-scheme) TiO2 /Bi2 O3 photocatalyst exhibits a drastically enhanced H2 O2 yield of 1.15 mm h-1 and decent furfuryl alcohol conversion to furoic acid synchronously. Furthermore, the S-scheme mechanism and dynamics are systematically investigated by in situ irradiated X-ray photoelectron spectroscopy and femtosecond transient absorption spectrum analyses. In situ Fourier transform infrared spectroscopy and density functional theory calculations reveal the mechanism of furoic acid evolution. The ingenious design of floatable photocatalysts not only furnishes insight into maximizing photocatalytic reaction kinetics but also provides a new route for highly efficient heterogeneous catalysis.
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Affiliation(s)
- Bowen He
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, International School of Material Science and Engineering, Wuhan University of Technology, Wuhan, 430070, P. R. China
- Laboratory of Solar Fuel, Faculty of Materials Science and Chemistry, China University of Geosciences, Wuhan, 430074, P. R. China
| | - Zhongliao Wang
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, International School of Material Science and Engineering, Wuhan University of Technology, Wuhan, 430070, P. R. China
- Laboratory of Solar Fuel, Faculty of Materials Science and Chemistry, China University of Geosciences, Wuhan, 430074, P. R. China
| | - Peng Xiao
- Hefei National Laboratory for Physical Sciences at Microscale, CAS Key Laboratory of Materials for Energy Conversion, Department of Materials Science and Engineering, University of Science and Technology of China, Hefei, 230026, P. R. China
| | - Tao Chen
- Hefei National Laboratory for Physical Sciences at Microscale, CAS Key Laboratory of Materials for Energy Conversion, Department of Materials Science and Engineering, University of Science and Technology of China, Hefei, 230026, P. R. China
| | - Jiaguo Yu
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, International School of Material Science and Engineering, Wuhan University of Technology, Wuhan, 430070, P. R. China
- Laboratory of Solar Fuel, Faculty of Materials Science and Chemistry, China University of Geosciences, Wuhan, 430074, P. R. China
| | - Liuyang Zhang
- Laboratory of Solar Fuel, Faculty of Materials Science and Chemistry, China University of Geosciences, Wuhan, 430074, P. R. China
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Zhang G, Xu Y, Rauf M, Zhu J, Li Y, He C, Ren X, Zhang P, Mi H. Breaking the Limitation of Elevated Coulomb Interaction in Crystalline Carbon Nitride for Visible and Near-Infrared Light Photoactivity. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2022; 9:e2201677. [PMID: 35652268 PMCID: PMC9313543 DOI: 10.1002/advs.202201677] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/22/2022] [Revised: 05/08/2022] [Indexed: 06/15/2023]
Abstract
Most near-infrared (NIR) light-responsive photocatalysts inevitably suffer from low charge separation due to the elevated Coulomb interaction between electrons and holes. Here, an n-type doping strategy of alkaline earth metal ions is proposed in crystalline K+ implanted polymeric carbon nitride (KCN) for visible and NIR photoactivity. The n-type doping significantly increases the electron densities and activates the n→π* electron transitions, producing NIR light absorption. In addition, the more localized valence band (VB) and the regulation of carrier effective mass and band decomposed charge density, as well as the improved conductivity by 1-2 orders of magnitude facilitate the charge transfer and separation. The proposed n-type doping strategy improves the carrier mobility and conductivity, activates the n→π* electron transitions for NIR light absorption, and breaks the limitation of poor charge separation caused by the elevated Coulomb interaction.
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Affiliation(s)
- Guoqiang Zhang
- College of Chemistry and Environmental EngineeringShenzhen UniversityShenzhenGuangdong518060P. R. China
| | - Yangsen Xu
- Institute of Information TechnologyShenzhen Institute of Information TechnologyShenzhenGuangdong518172P. R. China
| | - Muhammad Rauf
- College of Chemistry and Environmental EngineeringShenzhen UniversityShenzhenGuangdong518060P. R. China
| | - Jinyu Zhu
- College of Chemistry and Environmental EngineeringShenzhen UniversityShenzhenGuangdong518060P. R. China
| | - Yongliang Li
- College of Chemistry and Environmental EngineeringShenzhen UniversityShenzhenGuangdong518060P. R. China
| | - Chuanxin He
- College of Chemistry and Environmental EngineeringShenzhen UniversityShenzhenGuangdong518060P. R. China
| | - Xiangzhong Ren
- College of Chemistry and Environmental EngineeringShenzhen UniversityShenzhenGuangdong518060P. R. China
| | - Peixin Zhang
- College of Chemistry and Environmental EngineeringShenzhen UniversityShenzhenGuangdong518060P. R. China
| | - Hongwei Mi
- College of Chemistry and Environmental EngineeringShenzhen UniversityShenzhenGuangdong518060P. R. China
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Zhang Y, Xu J, Zhou J, Wang L. Metal-organic framework-derived multifunctional photocatalysts. CHINESE JOURNAL OF CATALYSIS 2022. [DOI: 10.1016/s1872-2067(21)63934-7] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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Zhang L, Zhang J, Yu H, Yu J. Emerging S-Scheme Photocatalyst. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2022; 34:e2107668. [PMID: 34962659 DOI: 10.1002/adma.202107668] [Citation(s) in RCA: 279] [Impact Index Per Article: 139.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/24/2021] [Revised: 12/26/2021] [Indexed: 06/14/2023]
Abstract
Photocatalysis is a green technology to use ubiquitous and intermittent sunlight. The emerging S-scheme heterojunction has demonstrated its superiority in photocatalysis. This article covers the state-of-the-art progress and provides new insights into its general designing criteria. It starts with the challenges confronted by single photocatalyst from the perspective of energy dissipation by borrowing the common behaviors in the dye molecule. Subsequently, other problems faced by single photocatalyst are summarized. Then a viable solution for these problems is the construction of heterojunctions. To overcome the problems and mistakes of type-II and Z-scheme heterojunctions, S-scheme heterojunction is proposed and the underlying reaction mechanism is summarized. Afterward, the design principles for S-scheme heterojunction are proposed and four types of S-scheme heterojunctions are suggested. Following this, direct characterization techniques for testifying the charge transfer in S-scheme heterojunction are presented. Finally, different photocatalytic applications of S-scheme heterojunctions are summarized. Specifically, this work endeavors to clarify the critical understanding on curved Fermi level in S-scheme heterojunction interface, which can help strengthen and advance the fundamental theories of photocatalysis. Moreover, the current challenges and prospects of the S-scheme heterojunction photocatalyst are critically discussed.
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Affiliation(s)
- Liuyang Zhang
- Laboratory of Solar Fuel, Faculty of Materials Science and Chemistry, China University of Geosciences, 388 Lumo Road, Wuhan, 430074, P. R. China
| | - Jianjun Zhang
- Laboratory of Solar Fuel, Faculty of Materials Science and Chemistry, China University of Geosciences, 388 Lumo Road, Wuhan, 430074, P. R. China
| | - Huogen Yu
- Laboratory of Solar Fuel, Faculty of Materials Science and Chemistry, China University of Geosciences, 388 Lumo Road, Wuhan, 430074, P. R. China
| | - Jiaguo Yu
- Laboratory of Solar Fuel, Faculty of Materials Science and Chemistry, China University of Geosciences, 388 Lumo Road, Wuhan, 430074, P. R. China
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Xu J, Gao D, Yu H, Wang P, Zhu B, Wang L, Fan J. Palladium-copper nanodot as novel H2-evolution cocatalyst: Optimizing interfacial hydrogen desorption for highly efficient photocatalytic activity. CHINESE JOURNAL OF CATALYSIS 2022. [DOI: 10.1016/s1872-2067(21)63830-5] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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Yang H, Zhang JF, Dai K. Organic amine surface modified one-dimensional CdSe0.8S0.2-diethylenetriamine/two-dimensional SnNb2O6 S-scheme heterojunction with promoted visible-light-driven photocatalytic CO2 reduction. CHINESE JOURNAL OF CATALYSIS 2022. [DOI: 10.1016/s1872-2067(20)63784-6] [Citation(s) in RCA: 39] [Impact Index Per Article: 19.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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Wang K, Feng X, Shangguan Y, Wu X, Chen H. Selective CO2 photoreduction to CH4 mediated by dimension-matched 2D/2D Bi3NbO7/g-C3N4 S-scheme heterojunction. CHINESE JOURNAL OF CATALYSIS 2022. [DOI: 10.1016/s1872-2067(21)63819-6] [Citation(s) in RCA: 18] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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UV-VIS-NIR-induced extraordinary H2 evolution over W18O49/Cd0.5Zn0.5S: Surface plasmon effect coupled with S-scheme charge transfer. CHINESE JOURNAL OF CATALYSIS 2022. [DOI: 10.1016/s1872-2067(20)63783-4] [Citation(s) in RCA: 21] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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Zhang J, Pan ZH, Yang Y, Wang PF, Pei CY, Chen W, Huang GB. Boosting the catalytic activity of a step-scheme In2O3/ZnIn2S4 hybrid system for the photofixation of nitrogen. CHINESE JOURNAL OF CATALYSIS 2022. [DOI: 10.1016/s1872-2067(21)63801-9] [Citation(s) in RCA: 31] [Impact Index Per Article: 15.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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Bai J, Shen R, Zhou K, Jiang Z, Zhang P, Li X. Integration of 2D layered CdS/WO3 S-scheme heterojunctions and metallic Ti3C2 MXene-based Ohmic junctions for effective photocatalytic H2 generation. CHINESE JOURNAL OF CATALYSIS 2022. [DOI: 10.1016/s1872-2067(21)63883-4] [Citation(s) in RCA: 63] [Impact Index Per Article: 31.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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21
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Cao X, Li Y, Guo Y, Yang Y, Ji M, You Z, An Y. Mild solvothermal syntheses and characterizations of five Nb-containing quaternary sulfides. INORG CHEM COMMUN 2022. [DOI: 10.1016/j.inoche.2021.109177] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
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22
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Xu S, Xu J, Hu L, Liu Y, Ma L. S-Scheme heterojunction based on the in situ coated core–shell NiCo 2S 4@WS 2 photocatalyst was constructed for efficient photocatalytic hydrogen evolution. NEW J CHEM 2022. [DOI: 10.1039/d1nj04409e] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
A core–shell structure was formed on the surface of NCS in situ loaded with WS, and efficient photocatalytic hydrogen evolution was achieved by constructing a reasonable S-scheme heterojunction.
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Affiliation(s)
- Shengming Xu
- School of Chemistry and Chemical Engineering, North Minzu University, Yinchuan 750021, P. R. China
| | - Jing Xu
- 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
| | - Linying Hu
- School of Chemistry and Chemical Engineering, North Minzu University, Yinchuan 750021, P. R. China
| | - Ye Liu
- School of Chemistry and Chemical Engineering, North Minzu University, Yinchuan 750021, P. R. China
| | - Lijun Ma
- School of Chemistry and Chemical Engineering, North Minzu University, Yinchuan 750021, P. R. China
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Wang L, Geng X, Zhang L, Liu Z, Wang H, Bian Z. Effects of various alcohol sacrificial agents on hydrogen evolution based on CoS 2@SCN nanomaterials and its mechanism. CHEMOSPHERE 2022; 286:131558. [PMID: 34293564 DOI: 10.1016/j.chemosphere.2021.131558] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/17/2021] [Revised: 06/29/2021] [Accepted: 07/12/2021] [Indexed: 06/13/2023]
Abstract
Visible light induced photocatalysis converted solar energy to chemical energy in the form of hydrogen. g-C3N4 modified by thermal oxidation etching, doped S, and nonprecious metal cocatalyst CoS2 (CoS2@SCN) were used for photocatalytic hydrogen production. And then the charge transfer behavior and mechanism of various alcohol sacrificial agents on hydrogen evolution was analyzed by optical characterization, impedance analysis, Mott-Schottky, and photocurrent tests. The relationship between the structure and catalytic performance was also explored using characterization methods. The results showed that CoS2 significantly improved the light absorption of g-C3N4, and carrier migration and separation. And when the sacrificial agent was triethanolamine, the nanocomposite CoS2@SCN exhibited best catalytic performance with the highest hydrogen activity of 223.6 μmol g-1 h-1, the minimum volume in-phase charge transfer resistance with 55.19 Ω and the maximum photocurrent and photocurrent density with 5.5 μA cm-2 and 0.63 mA cm-2. The more negatively charged surface of organic alcohols were, the easier they were to react with holes, thus enhanced charge transfer and hydrogen production efficiency. This report provides guidance for the selection of hydrogen producing sacrificial agents and preparation of highly charge-efficient catalysts. And it also provides a theoretical basis for hydrogen production from wastewater and environmental remediation.
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Affiliation(s)
- Li Wang
- College of Environmental Science and Engineering, Beijing Forestry University, Beijing, 100083, PR China
| | - Xinle Geng
- College of Environmental Science and Engineering, Beijing Forestry University, Beijing, 100083, PR China
| | - Lu Zhang
- College of Environmental Science and Engineering, Beijing Forestry University, Beijing, 100083, PR China
| | - Zehong Liu
- College of Water Sciences, Beijing Normal University, Beijing, 100875, PR China
| | - Hui Wang
- College of Environmental Science and Engineering, Beijing Forestry University, Beijing, 100083, PR China.
| | - Zhaoyong Bian
- College of Water Sciences, Beijing Normal University, Beijing, 100875, PR China.
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Shi YJ, Zhang J, Cui Z, Chu S, Wang Y, Zou Z. MOF-derived sulfur vacancies rich CdS nanoparticles in situ growth on 2D polymer for highly efficient photocatalytic hydrogen generation. Dalton Trans 2022; 51:5841-5858. [DOI: 10.1039/d1dt04188f] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
For heterojunction photocatalytic materials, the size of nanoparticles and electron-hole separation efficiency have a great influence on the photocatalytic hydrogen production activity. In this work, for the first time, a...
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Liu B, Bie C, Zhang Y, Wang L, Li Y, Yu J. Hierarchically Porous ZnO/g-C 3N 4 S-Scheme Heterojunction Photocatalyst for Efficient H 2O 2 Production. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2021; 37:14114-14124. [PMID: 34808051 DOI: 10.1021/acs.langmuir.1c02360] [Citation(s) in RCA: 58] [Impact Index Per Article: 19.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
The design of photocatalysts with hierarchical pore sizes is an effective method to improve mass transport, enhance light absorption, and increase specific surface area. Moreover, the construction of a heterojunction at the interface of two semiconductor photocatalysts with suitable band positions plays a crucial role in separating and transporting charge carriers. Herein, ZIF-8 and urea are used as precursors to prepare hierarchically porous ZnO/g-C3N4 S-scheme heterojunction photocatalysts through a two-step calcination method. This S-scheme heterojunction photocatalyst shows high activity toward photocatalytic H2O2 production, which is 3.4 and 5.0 times higher than that of pure g-C3N4 and ZnO, respectively. The mechanism of charge transfer and separation within the S-scheme heterojunction is studied by Kelvin probe, in situ irradiated X-ray photoelectron spectroscopy (ISI-XPS), and electron paramagnetic resonance (EPR). This research provides an idea of designing S-scheme heterojunction photocatalysts with hierarchical pores in efficient photocatalytic hydrogen peroxide production.
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Affiliation(s)
- Bowen Liu
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan 430070, P. R. China
| | - Chuanbiao Bie
- Laboratory of Solar Fuel, Faculty of Materials Science and Chemistry, China University of Geosciences, 388 Lumo Road, Wuhan 430074, P. R. China
| | - Yong Zhang
- Laboratory of Solar Fuel, Faculty of Materials Science and Chemistry, China University of Geosciences, 388 Lumo Road, Wuhan 430074, P. R. China
| | - Linxi Wang
- Laboratory of Solar Fuel, Faculty of Materials Science and Chemistry, China University of Geosciences, 388 Lumo Road, Wuhan 430074, P. R. China
| | - Youji Li
- College of Chemistry and Chemical Engineering, Jishou University, Jishou 416000, Hunan, P. R. China
| | - Jiaguo Yu
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan 430070, P. R. China
- Laboratory of Solar Fuel, Faculty of Materials Science and Chemistry, China University of Geosciences, 388 Lumo Road, Wuhan 430074, P. R. China
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Zhao B, Gao D, Liu Y, Fan J, Yu H. Cyano group-enriched crystalline graphitic carbon nitride photocatalyst: Ethyl acetate-induced improved ordered structure and efficient hydrogen-evolution activity. J Colloid Interface Sci 2021; 608:1268-1277. [PMID: 34739990 DOI: 10.1016/j.jcis.2021.10.108] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2021] [Revised: 10/16/2021] [Accepted: 10/18/2021] [Indexed: 02/01/2023]
Abstract
The molten salt-assisted route is one of the most important methods to improve the crystallinity of conventionally disordered bulk graphitic carbon nitride (g-C3N4). However, the residual potassium ions from potassium chloride/lithium chloride molten salt can greatly impact the ordered structure of g-C3N4 and serve as the recombination centers of photoinduced carriers, causing limited photocatalytic hydrogen-evolution performance. In this article, the ethyl acetate-mediated method is first developed to not only further improve the ordered structure of traditional crystalline g-C3N4, but also produce more cyano groups for preparing highly efficient g-C3N4 photocatalysts. Herein, the ethyl acetate can gradually hydrolyze to produce hydrogen ions, which can promote the more ordered sheet-like structure and more cyano groups by effective removal of residual potassium ions in the traditional crystalline g-C3N4, leading to the formation of cyano group-enriched crystalline g-C3N4 photocatalysts (CC-CN). As a result, the resultant CC-CN displays the remarkably enhanced photocatalytic hydrogen-evolution performance (295.30 µmol h-1 with an apparent quantum efficiency about 12.61%), in comparison to the bulk g-C3N4 (14.97 µmol h-1) and traditional crystalline g-C3N4 (24.60 µmol h-1). The great improvement of photocatalytic performance can mainly be ascribed to the synergism of improved ordered structure and abundant cyano groups, namely, the efficient transfer and separation of photoinduced charges as well as excellent interfacial hydrogen-generation reaction, respectively. The present work may deliver new strategies to prepare other high-crystalline photocatalysts with great efficiency.
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Affiliation(s)
- Binbin Zhao
- State Key Laboratory of Silicate Materials for Architectures and School of Chemistry, Chemical Engineering and Life Sciences, Wuhan University of Technology, Wuhan 430070, PR China
| | - Duoduo Gao
- State Key Laboratory of Silicate Materials for Architectures and School of Chemistry, Chemical Engineering and Life Sciences, Wuhan University of Technology, Wuhan 430070, PR China
| | - Yongping Liu
- Guangxi Key Laboratory of Electrochemical and Magneto-chemical Functional Materials, College of Chemistry and Bioengineering, Guilin University of Technology, Guilin 541004, PR China.
| | - Jiajie Fan
- School of Materials Science and Engineering, Zhengzhou University, Zhengzhou 450002, PR China
| | - Huogen Yu
- State Key Laboratory of Silicate Materials for Architectures and School of Chemistry, Chemical Engineering and Life Sciences, Wuhan University of Technology, Wuhan 430070, PR China.
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Zhang J, Hu Y, Li H, Cao L, Jiang Z, Chai Z, Wang X. Molecular Self-Assembly of Oxygen Deep-Doped Ultrathin C 3N 4 with a Built-In Electric Field for Efficient Photocatalytic H 2 Evolution. Inorg Chem 2021; 60:15782-15796. [PMID: 34619963 DOI: 10.1021/acs.inorgchem.1c02456] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
Heteroatom-doped carbon nitride (C3N4) with a built-in electric field can reinforce the carrier separation; however, the stability will be greatly reduced due to the loss of surface-doped atoms. Here, molecule self-assembly, as a facile bottom-up approach, is explored for the synthesis and oxygen doping of C3N4. The obtained C3N4 presents a porous and ultrathin structure and oxygen deep-doping, which generate abundant nitrogen vacancies and a stable built-in electric field. Toward photocatalytic hydrogen evolution, the ultrathin and oxygen deep-doped C3N4 exhibits a 3.5-fold higher activity than bulk C3N4 under simulated sunlight, and 3.6 times higher stability than the oxygen surface-doped counterpart within five cycles. Femtosecond transient absorption spectroscopy indicates the improved carrier separation, and density functional theory (DFT) calculation reveals the promoted H2O adsorption and activation under the built-in electric field, which contribute to the excellent photocatalytic performance of oxygen deep-doped ultrathin C3N4.
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Affiliation(s)
- Jingyu Zhang
- Inner Mongolia Key Laboratory of Chemistry and Physics of Rare Earth Materials, School of Chemistry and Chemical Engineering, Inner Mongolia University, Hohhot 010021, China
| | - Yifu Hu
- Inner Mongolia Key Laboratory of Chemistry and Physics of Rare Earth Materials, School of Chemistry and Chemical Engineering, Inner Mongolia University, Hohhot 010021, China
| | - Hui Li
- Inner Mongolia Key Laboratory of Chemistry and Physics of Rare Earth Materials, School of Chemistry and Chemical Engineering, Inner Mongolia University, Hohhot 010021, China
| | - Lili Cao
- Inner Mongolia Key Laboratory of Chemistry and Physics of Rare Earth Materials, School of Chemistry and Chemical Engineering, Inner Mongolia University, Hohhot 010021, China
| | - Zhengtong Jiang
- Inner Mongolia Key Laboratory of Chemistry and Physics of Rare Earth Materials, School of Chemistry and Chemical Engineering, Inner Mongolia University, Hohhot 010021, China
| | - Zhanli Chai
- Inner Mongolia Key Laboratory of Chemistry and Physics of Rare Earth Materials, School of Chemistry and Chemical Engineering, Inner Mongolia University, Hohhot 010021, China
| | - Xiaojing Wang
- Inner Mongolia Key Laboratory of Chemistry and Physics of Rare Earth Materials, School of Chemistry and Chemical Engineering, Inner Mongolia University, Hohhot 010021, China
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Mechanism investigation of PtPd decorated Zn0.5Cd0.5S nanorods with efficient photocatalytic hydrogen production combining with kinetics and thermodynamics. CHINESE JOURNAL OF CATALYSIS 2021. [DOI: 10.1016/s1872-2067(21)63791-9] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Novel S-scheme 2D/2D BiOBr/g-C3N4 heterojunctions with enhanced photocatalytic activity. CHINESE JOURNAL OF CATALYSIS 2021. [DOI: 10.1016/s1872-2067(20)63765-2] [Citation(s) in RCA: 98] [Impact Index Per Article: 32.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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Li F, Yue X, Zhou H, Fan J, Xiang Q. Construction of efficient active sites through cyano-modified graphitic carbon nitride for photocatalytic CO2 reduction. CHINESE JOURNAL OF CATALYSIS 2021. [DOI: 10.1016/s1872-2067(20)63776-7] [Citation(s) in RCA: 33] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
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31
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Hot-electron-assisted S-scheme heterojunction of tungsten oxide/graphitic carbon nitride for broad-spectrum photocatalytic H2 generation. CHINESE JOURNAL OF CATALYSIS 2021. [DOI: 10.1016/s1872-2067(20)63753-6] [Citation(s) in RCA: 41] [Impact Index Per Article: 13.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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32
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Cheng C, He B, Fan J, Cheng B, Cao S, Yu J. An Inorganic/Organic S-Scheme Heterojunction H 2 -Production Photocatalyst and its Charge Transfer Mechanism. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2021; 33:e2100317. [PMID: 33904199 DOI: 10.1002/adma.202100317] [Citation(s) in RCA: 209] [Impact Index Per Article: 69.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/13/2021] [Revised: 02/25/2021] [Indexed: 05/21/2023]
Abstract
Inspired by natural photosynthesis, constructing inorganic/organic heterojunctions is regarded as an effective strategy to design high-efficiency photocatalysts. Herein, a step (S)-scheme heterojunction photocatalyst is prepared by in situ growth of an inorganic semiconductor firmly on an organic semiconductor. A new pyrene-based conjugated polymer, pyrene-alt-triphenylamine (PT), is synthesized via the typical Suzuki-Miyaura reactions, and then employed as a substrate to anchor CdS nanocrystals. The optimized CdS/PT composite, coupling 2 wt% PT with CdS, exhibits a robust H2 evolution rate of 9.28 mmol h-1 g-1 with continuous release of H2 bubbles, as well as a high apparent quantum efficiency of 24.3%, which is ≈8 times that of pure CdS. The S-scheme charge transfer mechanism between PT and CdS, is systematically demonstrated by photoirradiated Kelvin probe measurement and in situ irradiated X-ray photoelectron spectroscopy analyses. This work provides a protocol for preparing specific S-scheme heterojunction photocatalysts on the basis of inorganic/organic coupling.
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Affiliation(s)
- Chang Cheng
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan, 430070, P. R. China
| | - Bowen He
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan, 430070, P. R. China
| | - Jiajie Fan
- School of Materials Science and Engineering, Zhengzhou University, Zhengzhou, 450001, P. R. China
| | - Bei Cheng
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan, 430070, P. R. China
| | - Shaowen Cao
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan, 430070, P. R. China
| | - Jiaguo Yu
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan, 430070, P. R. China
- Department of Physics, Faculty of Science, King Abdulaziz University, Jeddah, 21589, Saudi Arabia
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Yang Y, Tan H, Cheng B, Fan J, Yu J, Ho W. Near-Infrared-Responsive Photocatalysts. SMALL METHODS 2021; 5:e2001042. [PMID: 34927853 DOI: 10.1002/smtd.202001042] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/29/2020] [Revised: 12/22/2020] [Indexed: 06/14/2023]
Abstract
Broadening the absorption of light to the near-infrared (NIR) region is important in photocatalysis to achieve efficient solar-to-fuel conversion. NIR-responsive photocatalysts that can utilize diffusive solar energy are attractive for alleviating the energy crisis and environmental pollution. Over the past few years, considerable progress on the component and structural design of NIR-responsive photocatalysts have been reported. This study aims to systematically summarize recent progress toward the material design and mechanism optimization of NIR-responsive photocatalysts in this area. Depending on the main strategies for harvesting NIR photons, NIR-responsive photocatalysts can be categorized as direct NIR-light photocatalysts, indirect NIR-light photocatalysts, and photothermal photocatalysts. Furthermore, the construction and application of different NIR-responsive photocatalytic systems are summarized. Conclusions and perspectives are presented to further explore the potential of NIR-responsive photocatalysts in this field.
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Affiliation(s)
- Yi Yang
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan, 430070, P. R. China
- Foshan Xianhu Laboratory of the Advanced Energy Science and Technology Guangdong Laboratory, Xianhu Hydrogen Valley, Foshan, 528200, P. R. China
| | - Haiyan Tan
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan, 430070, P. R. China
| | - Bei Cheng
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan, 430070, P. R. China
| | - Jiajie Fan
- School of Materials Science and Engineering, Zhengzhou University, Zhengzhou, 450001, P. R. China
| | - Jiaguo Yu
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan, 430070, P. R. China
- Foshan Xianhu Laboratory of the Advanced Energy Science and Technology Guangdong Laboratory, Xianhu Hydrogen Valley, Foshan, 528200, P. R. China
| | - Wingkei Ho
- Department of Science and Environmental Studies, The Education University of Hong Kong, Tai Po, New Territories, Hong Kong, 999077, P. R. China
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Graphitic C3N4 modified by Ru(II)-based dyes for photocatalytic H2 evolution. Colloids Surf A Physicochem Eng Asp 2021. [DOI: 10.1016/j.colsurfa.2020.126119] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
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35
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Qamar MA, Shahid S, Javed M, Iqbal S, Sher M, Bahadur A, AL-Anazy MM, Laref A, Li D. Designing of highly active g-C3N4/Ni-ZnO photocatalyst nanocomposite for the disinfection and degradation of the organic dye under sunlight radiations. Colloids Surf A Physicochem Eng Asp 2021. [DOI: 10.1016/j.colsurfa.2021.126176] [Citation(s) in RCA: 40] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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36
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Li Y, Zhang D, Fan J, Xiang Q. Highly crystalline carbon nitride hollow spheres with enhanced photocatalytic performance. CHINESE JOURNAL OF CATALYSIS 2021. [DOI: 10.1016/s1872-2067(20)63684-1] [Citation(s) in RCA: 68] [Impact Index Per Article: 22.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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37
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Chen J, Qiu K. Oxygen vacancies and interfacial electric field co-induced photocatalytic performance of OVs-BiOI/α-Bi2O3 heterojunctions. Colloids Surf A Physicochem Eng Asp 2021. [DOI: 10.1016/j.colsurfa.2021.126262] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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38
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Wu X, Zhong W, Ma H, Hong X, Fan J, Yu H. Ultra-small molybdenum sulfide nanodot-coupled graphitic carbon nitride nanosheets: Trifunctional ammonium tetrathiomolybdate-assisted synthesis and high photocatalytic hydrogen evolution. J Colloid Interface Sci 2021; 586:719-729. [PMID: 33228958 DOI: 10.1016/j.jcis.2020.10.141] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2020] [Revised: 10/29/2020] [Accepted: 10/30/2020] [Indexed: 11/24/2022]
Abstract
The preparation of nanoscale molybdenum sulfide (MoS2)-modified graphitic carbon nitride (g-C3N4) nanosheets usually contains complex and multiple-step operations, including the separate synthesis of nanoscale MoS2 and g-C3N4 nanosheet, and their subsequent composite process. To effectively overcome the above drawbacks, herein, a facile one-step trifunctional ammonium tetrathiomolybdate ((NH4)2MoS4)-assisted approach has been designed to produce ultra-small MoSx nanodot-coupled g-C3N4 nanosheet photocatalyst, including the first addition of ammonium chloride (NH4Cl) and (NH4)2MoS4 into melamine precursors and their following one-step calcination. During high-temperature calcination, except for the promoting generation of the g-C3N4 nanosheets by produced ammonia (NH3) and hydrogen sulfide (H2S) gases, the above (NH4)2MoS4 decomposition not only can efficiently clip the s-heptazine framework to produce more terminal amino groups and cyano groups, but also can produce ultra-small MoSx nanodots on the resultant g-C3N4 nanosheet surface, resulting in the final production of ultra-small MoSx nanodot-coupled g-C3N4 nanosheets. The resultant MoSx nanodot-coupled g-C3N4 nanosheets evidently exhibit increased photocatalytic hydrogen (H2)-generation rate, about 8-fold increase to the traditional MoS2-modified g-C3N4 photocatalyst. The increased H2-generation rate can be mainly attributed to the synergism of MoSx nanodots and cyano group on the g-C3N4 nanosheet surface. The current facile technology could open the sights for the preparation of other high-efficiency photocatalysts.
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Affiliation(s)
- Xinhe Wu
- State Key Laboratory of Silicate Materials for Architectures, Wuhan University of Technology, Wuhan 430070, PR China
| | - Wei Zhong
- State Key Laboratory of Silicate Materials for Architectures, Wuhan University of Technology, Wuhan 430070, PR China
| | - Haiqin Ma
- School of Chemistry, Chemical Engineering and Life Sciences, Wuhan University of Technology, Wuhan 430070, PR China
| | - Xuekun Hong
- School of Electronic and Information Engineering, Changshu Institute of Technology, Changshu 215500, PR China.
| | - Jiajie Fan
- School of Materials Science and Engineering, Zhengzhou University, Zhengzhou 450002, PR China
| | - Huogen Yu
- State Key Laboratory of Silicate Materials for Architectures, Wuhan University of Technology, Wuhan 430070, PR China; School of Chemistry, Chemical Engineering and Life Sciences, Wuhan University of Technology, Wuhan 430070, PR China.
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Wang J, Wang G, Cheng B, Yu J, Fan J. Sulfur-doped g-C3N4/TiO2 S-scheme heterojunction photocatalyst for Congo Red photodegradation. CHINESE JOURNAL OF CATALYSIS 2021. [DOI: 10.1016/s1872-2067(20)63634-8] [Citation(s) in RCA: 299] [Impact Index Per Article: 99.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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40
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Liu L, Hu T, Dai K, Zhang J, Liang C. A novel step-scheme BiVO4/Ag3VO4 photocatalyst for enhanced photocatalytic degradation activity under visible light irradiation. CHINESE JOURNAL OF CATALYSIS 2021. [DOI: 10.1016/s1872-2067(20)63560-4] [Citation(s) in RCA: 135] [Impact Index Per Article: 45.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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41
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Sulfur-mediated photodeposition synthesis of NiS cocatalyst for boosting H2-evolution performance of g-C3N4 photocatalyst. CHINESE JOURNAL OF CATALYSIS 2021. [DOI: 10.1016/s1872-2067(20)63633-6] [Citation(s) in RCA: 100] [Impact Index Per Article: 33.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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42
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Wei J, Chen Y, Zhang H, Zhuang Z, Yu Y. Hierarchically porous S-scheme CdS/UiO-66 photocatalyst for efficient 4-nitroaniline reduction. CHINESE JOURNAL OF CATALYSIS 2021. [DOI: 10.1016/s1872-2067(20)63661-0] [Citation(s) in RCA: 56] [Impact Index Per Article: 18.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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43
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Jiang X, Li M, Li H, Jin Z. Ni-MOF-74 derived nickel phosphide and In 2O 3 form S-scheme heterojunction for efficient hydrogen evolution. NEW J CHEM 2021. [DOI: 10.1039/d1nj02705k] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
The composite structure of Ni2P/In2O3 constructs an S-scheme heterojunction that transfers useless electrons and holes to the composite interface for consumption.The loading of In2O3 further increases the photocatalytic hydrogen production activity.
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Affiliation(s)
- Xudong Jiang
- School of Chemistry and Chemical Engineering, Ningxia Key Laboratory of Solar Chemical Conversion Technology, Key Laboratory for Chemical Engineering and Technology, State Ethnic Affairs Commission, North Minzu University, Yinchuan 750021, P. R. China
| | - Mei Li
- School of Chemistry and Chemical Engineering, Ningxia Key Laboratory of Solar Chemical Conversion Technology, Key Laboratory for Chemical Engineering and Technology, State Ethnic Affairs Commission, North Minzu University, Yinchuan 750021, P. R. China
| | - Hongying Li
- School of Chemistry and Chemical Engineering, Ningxia Key Laboratory of Solar Chemical Conversion Technology, 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, Ningxia Key Laboratory of Solar Chemical Conversion Technology, Key Laboratory for Chemical Engineering and Technology, State Ethnic Affairs Commission, North Minzu University, Yinchuan 750021, P. R. China
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Vosoughi F, Habibi-Yangjeh A, Asadzadeh-Khaneghah S, Ghosh S, Maiyalagan T. Novel ternary g-C3N4 nanosheet/Ag2MoO4/AgI photocatalysts: Impressive photocatalysts for removal of various contaminants. J Photochem Photobiol A Chem 2020. [DOI: 10.1016/j.jphotochem.2020.112871] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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45
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Li Y, Li B, Zhang D, Cheng L, Xiang Q. Crystalline Carbon Nitride Supported Copper Single Atoms for Photocatalytic CO 2 Reduction with Nearly 100% CO Selectivity. ACS NANO 2020; 14:10552-10561. [PMID: 32806072 DOI: 10.1021/acsnano.0c04544] [Citation(s) in RCA: 174] [Impact Index Per Article: 43.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Single metal atom photocatalysts have received widespread attention due to the rational use of metal resources and maximum atom utilization efficiency. In particular, N-rich amorphous g-C3N4 is always used as a support to anchor single metal atoms. However, the enhancement of photocatalytic activity of g-C3N4 by introducing a single atom is limited due to the bulk morphology and the excess defects of amorphous g-C3N4. Here, we report crystalline g-C3N4 nanorod supported copper single atoms by molten salts and the reflux method. The prepared single Cu atoms/crystalline g-C3N4 photocatalyst (Cu-CCN) shows highly selective and efficient photocatalytic reduction of CO2 under the absence of any cocatalyst or sacrificial agent. The introduction of single Cu atoms can be used as the CO2 adsorption site, thus increasing the adsorption capacity of Cu-CCN samples to CO2. Theoretical calculation results show that reducing CO2 to CH4 on Cu-CCN samples is an entropy-increasing process, whereas reducing CO2 to CO is an entropy-decreasing process. As a result, the Cu-CCN samples exhibited enhanced photocatalytic CO2 reduction with nearly 100% selective photocatalytic CO2 to CO conversion. The mechanism of photocatalytic CO2 reduction over Cu-CCN samples was proposed based on in situ Fourier transform infrared spectra, X-ray absorption spectroscopy, and density functional theory calculation. This work provides an in-depth understanding of the design of photocatalysts for enhancing active sites of the reactants.
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Affiliation(s)
- Yang Li
- State Key Laboratory of Electronic Thin Film and Integrated Devices, School of Electronic Science and Engineering, University of Electronic Science and Technology of China, Chengdu 610054, P.R. China
- College of Resources and Environment, Huazhong Agricultural University, Wuhan 430070, P.R. China
| | - Baihai Li
- School of Materials and Energy, University of Electronic Science and Technology of China, Chengdu 610054, P.R. China
| | - Dainan Zhang
- State Key Laboratory of Electronic Thin Film and Integrated Devices, School of Electronic Science and Engineering, University of Electronic Science and Technology of China, Chengdu 610054, P.R. China
| | - Lei Cheng
- State Key Laboratory of Electronic Thin Film and Integrated Devices, School of Electronic Science and Engineering, University of Electronic Science and Technology of China, Chengdu 610054, P.R. China
| | - Quanjun Xiang
- State Key Laboratory of Electronic Thin Film and Integrated Devices, School of Electronic Science and Engineering, University of Electronic Science and Technology of China, Chengdu 610054, P.R. China
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46
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Tang H, Deng Y, Zou H, Tan Y, Xiang Y, Xu Y, Wu W, Zhou Y. Synthesis of Z‐Scheme CuInS
2
@BiOBr Heterojunction Composite with Visible‐Light Activity. ChemistrySelect 2020. [DOI: 10.1002/slct.202002008] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Haiqin Tang
- Department of Chemistry and Food Engineering Changsha University of Science and Technology Changsha 410114 China
| | - Yuehong Deng
- Department of Chemistry and Food Engineering Changsha University of Science and Technology Changsha 410114 China
| | - Hao Zou
- Department of Chemistry and Food Engineering Changsha University of Science and Technology Changsha 410114 China
| | - Yawen Tan
- Department of Chemistry and Food Engineering Changsha University of Science and Technology Changsha 410114 China
| | - Ye Xiang
- Department of Chemistry and Food Engineering Changsha University of Science and Technology Changsha 410114 China
| | - Yifeng Xu
- Department of Chemistry and Food Engineering Changsha University of Science and Technology Changsha 410114 China
| | - Wan Wu
- Department of Chemistry and Food Engineering Changsha University of Science and Technology Changsha 410114 China
| | - Yi Zhou
- Department of Chemistry and Food Engineering Changsha University of Science and Technology Changsha 410114 China
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47
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Zhao Y, Shao C, Lin Z, Jiang S, Song S. Low-Energy Facets on CdS Allomorph Junctions with Optimal Phase Ratio to Boost Charge Directional Transfer for Photocatalytic H 2 Fuel Evolution. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2020; 16:e2000944. [PMID: 32378313 DOI: 10.1002/smll.202000944] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/14/2020] [Revised: 04/02/2020] [Accepted: 04/07/2020] [Indexed: 06/11/2023]
Abstract
Low-energy facets on CdS allomorph junctions with optimal phase ratio are designed to boost charge directional transfer for photocatalytic H2 fuel evolution. Fermi energy level difference between low-energy facets as driving force promotes electrons directional transfer to hexagonal CdS(102) facet and holes to cubic CdS(111) facet. The optimal allomorphs CdS presents superior photocatalytic H2 evolution rate of 32.95 mmol g-1 h-1 with release in a large amount of visible H2 bubbles, which is much higher than single-phase CdS with high-energy facets and even supports noble metal photocatalysts. This scientific perspective on low-energy facets of allomorph junctions with optimal phase ratio breaks the long-held view of pursuing high-energy crystal surfaces, which will break the understanding on surface structure crystal facet engineering of photocatalytic materials.
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Affiliation(s)
- Yan Zhao
- State Key Laboratory Base of Novel Functional Materials and Preparation Science, School of Materials Science & Chemical Engineering, Ningbo University, Ningbo, Zhejiang, 315211, China
| | - Chengtian Shao
- Department of Chemistry, Chung Yuan Christian University, Taoyuan City, 330-41, Taiwan
| | - Zhexing Lin
- State Key Laboratory Base of Novel Functional Materials and Preparation Science, School of Materials Science & Chemical Engineering, Ningbo University, Ningbo, Zhejiang, 315211, China
| | - Shujuan Jiang
- State Key Laboratory Base of Novel Functional Materials and Preparation Science, School of Materials Science & Chemical Engineering, Ningbo University, Ningbo, Zhejiang, 315211, China
| | - Shaoqing Song
- State Key Laboratory Base of Novel Functional Materials and Preparation Science, School of Materials Science & Chemical Engineering, Ningbo University, Ningbo, Zhejiang, 315211, China
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