1
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Zhong Z, You D, Wan Y, Pan Z, Cheng Q. Coupling Cu Coordination Polymers with CdS Forming an S-Scheme Heterojunction for Rapid Charge Separation and High Photocatalytic Activity. Inorg Chem 2024; 63:14509-14524. [PMID: 39021119 DOI: 10.1021/acs.inorgchem.4c01767] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/20/2024]
Abstract
Energy and the environment are significant impacting factors for the future development of humankind. In order to improve the corrosion resistance of CdS and decrease the recombination of photogenerated carriers, a novel Cu-CPs@CdS heterojunction with high efficiency mesopores was constructed by a simple hydrothermal method. The effective interfacial contact formation between nano-CdS and Cu-CPs promotes the transfer of photogenerated carriers while exhibiting a high spatial separation rate of charges. The photocatalytic performance of the heterojunction was evaluated by the photocatalytic degradation of organic pollutants and photocatalytic hydrogen generation. The photocatalytic degradation of ciprofloxacin (CIP) could reach 90.34%, and the hydrogen generation was high as 9227.82 μmol·g-1 under simulated sunlight irradiation. The boosted photocatalytic activity of Cu-CPs@CdS results from (i) the formation of coordination bonds, which not only enhanced the stability of heterojunctions but also provided a path for photogenerated carrier migration, (ii) integrating Cu-CPs, which provided more active sites, and (iii) the matched energy band structure between CdS and Cu-CPs that promoted speedy S-scheme interfacial charge-transfer pathways, culminating in efficient photogenerated charge separation and transfer. This research offered a fresh tactic to restrict photocorrosion and enhance the production of photocatalytic H2 over CdS-based catalysts.
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Affiliation(s)
- Zhenfeng Zhong
- Engineering Research Center of Phosphorous Development and Utilization of Ministry of Education, Wuhan Institute of Technology, Wuhan 430205, PR China
| | - Dan You
- School of Chemical and Materials Engineering, College of Post and Telecommunication of Wuhan Institute of Technology, Wuhan 430073, PR China
| | - Yuqi Wan
- The Faculty of Dentistry, The University of Hong Kong, Hong Kong 999077, PR China
| | - Zhiquan Pan
- Engineering Research Center of Phosphorous Development and Utilization of Ministry of Education, Wuhan Institute of Technology, Wuhan 430205, PR China
| | - Qingrong Cheng
- Engineering Research Center of Phosphorous Development and Utilization of Ministry of Education, Wuhan Institute of Technology, Wuhan 430205, PR China
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2
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Huang SY, Lin X, Yang HY, Dou XR, Shi WJ, Deng JH, Zhong DC, Gong YN, Lu TB. Covalent Bonding of Salen Metal Complexes with Pyrene Chromophores to Porous Polymers for Photocatalytic Hydrogen Evolution. Inorg Chem 2024; 63:13594-13601. [PMID: 38973091 DOI: 10.1021/acs.inorgchem.4c01774] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/09/2024]
Abstract
The development of low-cost and efficient photocatalysts to achieve water splitting to hydrogen (H2) is highly desirable but remains challenging. Herein, we design and synthesize two porous polymers (Co-Salen-P and Fe-Salen-P) by covalent bonding of salen metal complexes and pyrene chromophores for photocatalytic H2 evolution. The catalytic results demonstrate that the two polymers exhibit excellent catalytic performance for H2 generation in the absence of additional noble-metal photosensitizers and cocatalysts. Particularly, the H2 generation rate of Co-Salen-P reaches as high as 542.5 μmol g-1 h-1, which is not only 6 times higher than that of Fe-Salen-P but also higher than a large amount of reported Pt-assisted photocatalytic systems. Systematic studies show that Co-Salen-P displays faster charge separation and transfer efficiencies, thereby accounting for the significantly improved photocatalytic activity. This study provides a facile and efficient way to fabricate high-performance photocatalysts for H2 production.
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Affiliation(s)
- Shu-Ying Huang
- Institute for New Energy Materials and Low Carbon Technologies, School of Materials Science and Engineering, School of Chemistry and Chemical Engineering, Tianjin University of Technology, Tianjin 300384, China
| | - Xiao Lin
- Institute for New Energy Materials and Low Carbon Technologies, School of Materials Science and Engineering, School of Chemistry and Chemical Engineering, Tianjin University of Technology, Tianjin 300384, China
| | - Hao-Yu Yang
- Institute for New Energy Materials and Low Carbon Technologies, School of Materials Science and Engineering, School of Chemistry and Chemical Engineering, Tianjin University of Technology, Tianjin 300384, China
| | - Xue-Rong Dou
- Institute for New Energy Materials and Low Carbon Technologies, School of Materials Science and Engineering, School of Chemistry and Chemical Engineering, Tianjin University of Technology, Tianjin 300384, China
| | - Wen-Jie Shi
- Institute for New Energy Materials and Low Carbon Technologies, School of Materials Science and Engineering, School of Chemistry and Chemical Engineering, Tianjin University of Technology, Tianjin 300384, China
| | - Ji-Hua Deng
- Institute for New Energy Materials and Low Carbon Technologies, School of Materials Science and Engineering, School of Chemistry and Chemical Engineering, Tianjin University of Technology, Tianjin 300384, China
| | - Di-Chang Zhong
- Institute for New Energy Materials and Low Carbon Technologies, School of Materials Science and Engineering, School of Chemistry and Chemical Engineering, Tianjin University of Technology, Tianjin 300384, China
| | - Yun-Nan Gong
- Institute for New Energy Materials and Low Carbon Technologies, School of Materials Science and Engineering, School of Chemistry and Chemical Engineering, Tianjin University of Technology, Tianjin 300384, China
| | - Tong-Bu Lu
- Institute for New Energy Materials and Low Carbon Technologies, School of Materials Science and Engineering, School of Chemistry and Chemical Engineering, Tianjin University of Technology, Tianjin 300384, China
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3
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Song X, Li G, Zhou W, Wu Y, Liu X, Zhu Z, Huo P, Wang M. Construction of Au-modified CN-based donor-acceptor system coupled with dual photothermal effects for efficient photoreduction of carbon dioxide. J Colloid Interface Sci 2024; 664:868-881. [PMID: 38493652 DOI: 10.1016/j.jcis.2024.03.090] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2024] [Revised: 03/02/2024] [Accepted: 03/11/2024] [Indexed: 03/19/2024]
Abstract
Conversion of CO2 into high value-added fuels through the photothermal effect is an effective approach for utilizing solar energy. In this study, we prepared the CN-based photocatalyst Py-CTN-Au with both donor-acceptor (D-A) system and dual photothermal effects using a simple two-step method involving calcination and photo-deposition. Real-time monitoring with a thermal imaging camera revealed that Py-CTN-Au0.5 achieved a maximum stable temperature of 180 °C, which was approximately 1.2 times higher than that of Py-CTN (155 °C) and 1.9 times higher than that of g-CN (95 °C) under the same reaction conditions. Under the optimized reaction conditions, Py-CTN-Au0.5 exhibited a CO release rate of 30.59 umol g-1 after 4 h of reaction, which was 7.3 times higher than that of pure g-CN (4.18 umol g-1). The D-A system not only facilitated the separation and transformation of charge carriers but also induced a photothermal effect to accelerate the photoreduction of CO2. Additionally, the cocatalyst Au nanoparticles (Au NPs) further enhanced the charge carrier dynamics and photothermal effect by increasing the built-in electric field intensity and localized surface plasmon resonance (LSPR) effect, respectively. The dual photothermal effects resulting from the non-radiative photon conversion of the D-A structure and the Au NPs LSPR effect, along with the enhanced charge carrier dynamics, catalyzed the efficient photoreduction of CO2. DFT simulations were used to confirm the effect of D-A system and Au NPs. In-situ FTIR results demonstrated that the synergistic photothermal effect promoted the formation of the key intermediate species COOH*, which is beneficial for the photocatalytic reduction of CO2. This study provides valuable insights into the multiple photothermal synergistic effects in photocatalytic reactions.
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Affiliation(s)
- Xianghai Song
- Institute of Green Chemistry and Chemical Technology, Advanced Chemical Engineering Laboratory of Green Materials and Energy of Jiangsu Province, School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, China; International Innovation center for Forest Chemicals and Materials of Nanjing Forestry, Nanjing Forestry University, Nanjing 210037, China.
| | - Gen Li
- Institute of Green Chemistry and Chemical Technology, Advanced Chemical Engineering Laboratory of Green Materials and Energy of Jiangsu Province, School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, China
| | - Weiqiang Zhou
- Institute of Green Chemistry and Chemical Technology, Advanced Chemical Engineering Laboratory of Green Materials and Energy of Jiangsu Province, School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, China
| | - Yuanfeng Wu
- School of Chemistry and Chemical Engineering, Henan Polytechnic University, Jiaozuo 454003, China
| | - Xin Liu
- Institute of Green Chemistry and Chemical Technology, Advanced Chemical Engineering Laboratory of Green Materials and Energy of Jiangsu Province, School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, China
| | - Zhi Zhu
- Institute of Green Chemistry and Chemical Technology, Advanced Chemical Engineering Laboratory of Green Materials and Energy of Jiangsu Province, School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, China
| | - Pengwei Huo
- Institute of Green Chemistry and Chemical Technology, Advanced Chemical Engineering Laboratory of Green Materials and Energy of Jiangsu Province, School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, China.
| | - Mei Wang
- School of Agricultural Engineering, Jiangsu University, Zhenjiang 212013, China.
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4
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Li J, Guo C, Niu Y, Cao X, Li J, Wang J. Construction of a Dual-Function Mo-ZIS@Ti for Photocatalytic Benzyl Alcohol Oxidation and Hydrogen Evolution Performance. Inorg Chem 2024; 63:9297-9306. [PMID: 38712902 DOI: 10.1021/acs.inorgchem.4c01098] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/08/2024]
Abstract
The photocatalytic oxidation of benzyl alcohol and the simultaneous evolution of hydrogen from water are efficient dual-optimal routes. It is important to develop composite catalysts that combine redox properties and facilitate electron-hole separation and transport. Herein, the bimetallic-doped Mo-ZIS@Ti photocatalyst was designed and synthesized, and the selective oxidation of benzyl alcohol and hydrogen evolution by water splitting was realized at the same time. Under visible light irradiation, benzyl alcohol was completely converted with more than 99% selectivity for benzaldehyde, and the H2 production rate was 5.6 times higher than the initial ZIS. The exceptional catalytic performance was ascribed to utilizing Ti-MIL-125 as a precursor, wherein slowly releasing-doped Ti formed robust Ti-S bonds that quickly transfer electrons and reduce sites. Meanwhile, doping Mo effectively captures photogenerated holes and acts as active sites for oxidation reactions. Both experimental characterization and work function calculations demonstrate that the bimetallic synergism effectively modulates the electronic structure of ZIS, promotes the directional separation of electrons and holes, and significantly improves the photoactivity and stability of ZIS. This work contributes a route to obtain benzaldehyde and green hydrogen at the same time and also gives new insights for the construction and mechanism study of bimetallic-doping catalysts.
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Affiliation(s)
- Jianmin Li
- Key Laboratory of Oil and Gas Fine Chemicals, Ministry of Education, School of Chemical Engineering and Technology, Xinjiang University, Urumqi, Xinjiang 830017, P. R. China
| | - Changyan Guo
- Key Laboratory of Oil and Gas Fine Chemicals, Ministry of Education, School of Chemical Engineering and Technology, Xinjiang University, Urumqi, Xinjiang 830017, P. R. China
| | - Yanan Niu
- Key Laboratory of Oil and Gas Fine Chemicals, Ministry of Education, School of Chemical Engineering and Technology, Xinjiang University, Urumqi, Xinjiang 830017, P. R. China
| | - Xianglei Cao
- Key Laboratory of Oil and Gas Fine Chemicals, Ministry of Education, School of Chemical Engineering and Technology, Xinjiang University, Urumqi, Xinjiang 830017, P. R. China
| | - Jiang Li
- Key Laboratory of Oil and Gas Fine Chemicals, Ministry of Education, School of Chemical Engineering and Technology, Xinjiang University, Urumqi, Xinjiang 830017, P. R. China
| | - Jide Wang
- Key Laboratory of Oil and Gas Fine Chemicals, Ministry of Education, School of Chemical Engineering and Technology, Xinjiang University, Urumqi, Xinjiang 830017, P. R. China
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5
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Wen Q, Li D, Gao C, Wu L, Song F, Zhou J. Synthesis of Dual p-n Heterojunction of Ni/Mn-MOF-74/CdS@Co 3O 4 Photocatalyst as a Photoassisted Fenton-like Catalyst for Removal of Tetracycline Hydrochloride. Inorg Chem 2023. [PMID: 37992674 DOI: 10.1021/acs.inorgchem.3c03377] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2023]
Abstract
In this study, a novel composite material, Ni/Mn-MOF-74/CdS@Co3O4 was synthesized. This material consisted of a dual p-n heterojunction, which enabled efficient separation and transfer of charge carriers. Compared to a single p-n heterojunction, the presence of this dual heterojunction significantly enhanced the overall efficiency. The improved efficiency could be attributed to the unique properties of the constituent semiconductors. Co3O4 exhibited p-type semiconductor properties, while Ni/Mn-MOF-74 and CdS exhibited n-type semiconductor properties. By a combination of these materials to form a composite photocatalyst, a Z-type heterojunction was created at the interface of the p-n junction. This design established an internal electric field at both ends, effectively separating the photogenerated electrons and holes in each individual photocatalyst. As a result, the respective photocatalytic activities of the materials were maximized. To demonstrate the practical application of this composite material, it was utilized for the activation of peroxymonosulfate under visible light irradiation, with the aim of enhancing the photocatalytic degradation efficiency of tetracycline hydrochloride. The photocatalytic mechanism of Ni/Mn-MOF-74/CdS@Co3O4 in activating peroxymonosulfate and degrading tetracycline hydrochloride was investigated in detail. Furthermore, the toxicity of tetracycline hydrochloride and its intermediates was evaluated by using toxicity evaluation software.
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Affiliation(s)
- Qi Wen
- School of Chemistry and Chemical Engineering, Xi'an University of Architecture and Technology, Xi'an 710055, China
| | - Di Li
- School of Chemistry and Chemical Engineering, Xi'an University of Architecture and Technology, Xi'an 710055, China
| | - Chunyan Gao
- School of Chemistry and Chemical Engineering, Xi'an University of Architecture and Technology, Xi'an 710055, China
| | - Lei Wu
- School of Chemistry and Chemical Engineering, Xi'an University of Architecture and Technology, Xi'an 710055, China
| | - Fang Song
- Instrument Analysis Center of Xi'an University of Architecture and Technology, Xi'an University of Architecture and Technology, Xi'an 710055, China
| | - Jun Zhou
- School of Chemistry and Chemical Engineering, Xi'an University of Architecture and Technology, Xi'an 710055, China
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6
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Design of hollow nanostructured photocatalysts for clean energy production. Coord Chem Rev 2023. [DOI: 10.1016/j.ccr.2022.214953] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/05/2022]
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7
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Comprehensive Review on g-C 3N 4-Based Photocatalysts for the Photocatalytic Hydrogen Production under Visible Light. Int J Mol Sci 2022; 24:ijms24010346. [PMID: 36613789 PMCID: PMC9820802 DOI: 10.3390/ijms24010346] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2022] [Revised: 12/21/2022] [Accepted: 12/22/2022] [Indexed: 12/28/2022] Open
Abstract
Currently, the synthesis of active photocatalysts for the evolution of hydrogen, including photocatalysts based on graphite-like carbon nitride, is an acute issue. In this review, a comprehensive analysis of the state-of-the-art studies of graphic carbon nitride as a photocatalyst for hydrogen production under visible light is presented. In this review, various approaches to the synthesis of photocatalysts based on g-C3N4 reported in the literature were considered, including various methods for modifying and improving the structural and photocatalytic properties of this material. A thorough analysis of the literature has shown that the most commonly used methods for improving g-C3N4 properties are alterations of textural characteristics by introducing templates, pore formers or pre-treatment method, doping with heteroatoms, modification with metals, and the creation of composite photocatalysts. Next, the authors considered their own detailed study on the synthesis of graphitic carbon nitride with different pre-treatments and respective photocatalysts that demonstrate high efficiency and stability in photocatalytic production of hydrogen. Particular attention was paid to describing the effect of the state of the platinum cocatalyst on the activity of the resulting photocatalyst. The decisive factors leading to the creation of active materials were discussed.
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8
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Wang J, Wang Z, Zhang J, Chai SP, Dai K, Low J. Surface-active site modulation of the S-scheme heterojunction toward exceptional photocatalytic performance. NANOSCALE 2022; 14:18087-18093. [PMID: 36448604 DOI: 10.1039/d2nr05341a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
Heterojunction photocatalysts have shown their immense capability in enhancing photogenerated charge carrier separation. Yet, the intrinsic scarcity of active sites in semiconductor components of heterojunction photocatalysts limits their potential for photocatalysis being used in practical applications. Herein, we employ a non-noble metal cocatalyst (i.e., NiS) for modulating a S-scheme heterojunction photocatalyst consisting of Cd3(C3N3S3)2 (CdCNS) and CdS. It is revealed that the formation of the CdCNS/CdS S-scheme heterojunction can enable optimal photogenerated charge carrier utilization efficiency and optimized redox capability. More importantly, the meticulous loading of NiS can play multiple roles in enhancing the photocatalytic performance of the CdCNS/CdS photocatalyst, including endowing it with abundant surface-active sites and acting as a photogenerated electron acceptor. As a result, the optimized NiS-loaded CdCNS/CdS attains an excellent hydrogen production rate of 38.17 mmol g-1 h-1, to reach a quantum efficiency of 29.02% at 420 nm. The results reported in this work provide an interesting insight into the important roles of surface-active site modulation in optimizing photocatalytic performances.
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Affiliation(s)
- Jing Wang
- Key Laboratory of Green and Precise Synthetic Chemistry and Applications, Ministry of Education, Huaibei Normal University, Huaibei, 235000, P. R. China.
| | - Zhongliao Wang
- Key Laboratory of Green and Precise Synthetic Chemistry and Applications, Ministry of Education, Huaibei Normal University, Huaibei, 235000, P. R. China.
| | - Jinfeng Zhang
- Key Laboratory of Green and Precise Synthetic Chemistry and Applications, Ministry of Education, Huaibei Normal University, Huaibei, 235000, P. R. China.
| | - Siang-Piao Chai
- Multidisciplinary Platform of Advanced Engineering, Chemical Engineering Discipline, School of Engineering, Monash University, Bandar Sunway 47500, Selangor, Malaysia
| | - Kai Dai
- Key Laboratory of Green and Precise Synthetic Chemistry and Applications, Ministry of Education, Huaibei Normal University, Huaibei, 235000, P. R. China.
| | - Jingxiang Low
- Hefei National Laboratory for Physical Sciences at the Microscale, University of Science and Technology of China, Hefei, Anhui 230026, P. R. China.
- Multidisciplinary Platform of Advanced Engineering, Chemical Engineering Discipline, School of Engineering, Monash University, Bandar Sunway 47500, Selangor, Malaysia
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9
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In-situ synthesis of nickel/palladium bimetal/ZnIn2S4 Schottky heterojunction for efficient photocatalytic hydrogen evolution. J Colloid Interface Sci 2022; 623:205-215. [DOI: 10.1016/j.jcis.2022.05.040] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2022] [Revised: 05/05/2022] [Accepted: 05/06/2022] [Indexed: 12/29/2022]
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10
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Fabrication of TaON/CdS Heterostructures for Enhanced Photocatalytic Hydrogen Evolution under Visible Light Irradiation. Catalysts 2022. [DOI: 10.3390/catal12101110] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Developing high-performance photocatalysts for H2 production via fabricating heterojunctions has attracted much attention. Herein, we design a simple strategy to prepare composites that consist of TaON/CdS hybrids via a hydrothermal process. The results show that the pristine CdS nanoparticles loaded with 20 wt% TaON (TC4) could maximize the photocatalytic hydrogen evolution rate to 19.29 mmol g−1 h−1 under visible light irradiation, which was 2.13 times higher than that of the pristine CdS (9.03 mmol g−1 h−1) under the same conditions. The apparent quantum yield (AQY) of the TC4 nanocomposites at 420 nm was calculated to be 18.23%. The outstanding photocatalytic performance of the composites can be ascribed to the formation of heterojunctions. The electrochemical measurements indicate that the decoration facilitates the generation of extra photo-electrons, prolonging the recombination rate of photogenerated charge carriers, offering adequate active sites and improving catalytic stability. This study sheds light on the construction strategy and the deep understanding of the novel CdS-based composites for high-performance photocatalytic H2 production.
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11
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Energy funneling and charge separation in CdS modified with dual cocatalysts for enhanced H2 generation. CHINESE JOURNAL OF CATALYSIS 2022. [DOI: 10.1016/s1872-2067(21)64009-3] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
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12
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Ke Y, Zhang J, Liu L, Li X, Liang Q, Li Z. Self-Assembled Zeolitic Imidazolate Framework/CdS Hollow Microspheres with Efficient Charge Separation for Enhanced Photocatalytic Hydrogen Evolution. Inorg Chem 2022; 61:10598-10608. [PMID: 35763666 DOI: 10.1021/acs.inorgchem.2c01697] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Enhanced interfacial charge separation is of great importance to high-efficiency photocatalytic hydrogen production. Herein, we successfully fabricated novel ZIF-67/CdS hollow sphere (HS) and ZIF-8/CdS HS heterostructures through an in situ self-assembly process, in which ZIF-67 and ZIF-8 are closely coated on CdS HSs to form "double-shell"-like structures. This hierarchical heterostructure with porous outer layers on the surface of CdS HSs can expose accessible active sites and possess close contact. Upon visible-light illumination, the optimal proportion of ZIF-67/CdS HS displays a hydrogen generation rate of 1721 μmol g-1 h-1, which is 11.9 and 3.1 times higher than that of a pure CdS HS (145 μmol g-1 h-1) and ZIF-8/CdS HS (555 μmol g-1 h-1), respectively. The proposed photocatalytic mechanism is explored: ZIF-8/CdS HS follows the type-II mechanism, and ZIF-67/CdS HS follows the Z-scheme mechanism. The reason for the higher photocatalytic activity of ZIF-67/CdS HS is that ZIF-67 not merely with a porous structure facilitates the diffusion of H2 gas, but with a well-matched band structure promotes charge transfer and separation.
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Affiliation(s)
- Yi Ke
- Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology, Advanced Catalysis and Green Manufacturing Collaborative Innovation Center, Changzhou University, Changzhou 213164, P. R. China
| | - Jian Zhang
- Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology, Advanced Catalysis and Green Manufacturing Collaborative Innovation Center, Changzhou University, Changzhou 213164, P. R. China
| | - Lijuan Liu
- Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology, Advanced Catalysis and Green Manufacturing Collaborative Innovation Center, Changzhou University, Changzhou 213164, P. R. China
| | - Xiazhang Li
- Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology, Advanced Catalysis and Green Manufacturing Collaborative Innovation Center, Changzhou University, Changzhou 213164, P. R. China
| | - Qian Liang
- Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology, Advanced Catalysis and Green Manufacturing Collaborative Innovation Center, Changzhou University, Changzhou 213164, P. R. China
| | - Zhongyu Li
- Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology, Advanced Catalysis and Green Manufacturing Collaborative Innovation Center, Changzhou University, Changzhou 213164, P. R. China.,School of Environmental & Safety Engineering, Changzhou University, Changzhou 213164, P. R. China
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13
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Fu H, Zhao H, Yang X, Xiong S, An X. High-performance MoS2/CdS nanodiamonds for photocatalytic hydrogen evolution under visible light irradiation. POWDER TECHNOL 2022. [DOI: 10.1016/j.powtec.2022.117596] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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14
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Biotemplated CdS Nano-Aggregate Networks for Highly Effective Visible-Light Photocatalytic Hydrogen Production. NANOMATERIALS 2022; 12:nano12081268. [PMID: 35457983 PMCID: PMC9026159 DOI: 10.3390/nano12081268] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/23/2022] [Revised: 04/07/2022] [Accepted: 04/07/2022] [Indexed: 12/04/2022]
Abstract
In the last few decades, many new synthesis techniques have been developed in order to obtain an effective visible-light responsive photocatalyst for hydrogen production by water splitting. Among these new approaches, the biotemplated synthesis method has aroused much attention because of its unique advantages in preparing materials with special morphology and structure. In this work, Hydrilla verticillata (L. f.) Royle was used as a biotemplate to synthesize a CdS photocatalyst. The as-synthesized sample had the microstructure of nano-scaled aggregate networks and its activity for photocatalytic hydrogen production was six times higher than that of CdS synthesized without a template in an Na2S-Na2SO3 sacrificial system. The use of Pt and PdS as cocatalysts further improved the hydrogen production rate to 14.86 mmol/g·h under visible-light (λ ≥ 420 nm) irradiation, so the hydrogen production can be directly observed by the naked eye. The results of characterization showed that the as-synthesized CdS photocatalyst has a high specific surface area and narrow band gap, which is favorable for light absorption and photocatalytic reaction. This work provides a new way to search for efficient visible-light catalysts and confirms the uniqueness of a biotemplated synthesis method in obtaining specially structured materials.
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15
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Cao S, Zhou Y, Wang R, Jiao W. Enhanced Photocatalytic Activity by Pt Confined within N-Doped Carbon on TiO2 Inner Surface. Ind Eng Chem Res 2022. [DOI: 10.1021/acs.iecr.1c04431] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Songtao Cao
- School of Chemical Engineering and Technology, North University of China, Taiyuan 030051, P.R. China
| | - Yu Zhou
- School of Chemical Engineering and Technology, North University of China, Taiyuan 030051, P.R. China
| | - Ruixin Wang
- School of Chemical Engineering and Technology, North University of China, Taiyuan 030051, P.R. China
| | - Weizhou Jiao
- School of Chemical Engineering and Technology, North University of China, Taiyuan 030051, P.R. China
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16
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Tracking charge transfer pathways in SrTiO3/CoP/Mo2C nanofibers for enhanced photocatalytic solar fuel production. CHINESE JOURNAL OF CATALYSIS 2022. [DOI: 10.1016/s1872-2067(21)63898-6] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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17
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Gao D, Xu J, Wang L, Zhu B, Yu H, Yu J. Optimizing Atomic Hydrogen Desorption of Sulfur-Rich NiS 1+ x Cocatalyst for Boosting Photocatalytic H 2 Evolution. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2022; 34:e2108475. [PMID: 34811811 DOI: 10.1002/adma.202108475] [Citation(s) in RCA: 57] [Impact Index Per Article: 28.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/21/2021] [Revised: 11/16/2021] [Indexed: 06/13/2023]
Abstract
Low-cost transition-metal chalcogenides (MSx ) are demonstrated to be potential candidate cocatalyst for photocatalytic H2 generation. However, their H2 -generation performance is limited by insufficient quantities of exposed sulfur (S) sites and their strong bonding with adsorbed hydrogen atoms (SHads ). To address these issues, an efficient coupling strategy of active-site-enriched regulation and electronic structure modification of active S sites is developed by rational design of core-shell Au@NiS1+ x nanostructured cocatalyst. In this case, the Au@NiS1+ x cocatalyst can be skillfully fabricated to synthesize the Au@NiS1+ x modified TiO2 (denoted as TiO2 /Au@NiS1+ x ) by a two-step route. Photocatalytic experiments exhibit that the resulting TiO2 /Au@NiS1+ x (1.7:1.3) displays a boosted H2 -generation rate of 9616 µmol h-1 g-1 with an apparent quantum efficiency of 46.0% at 365 nm, which is 2.9 and 1.7 times the rate over TiO2 /NiS1+ x and TiO2 /Au, respectively. In situ/ex situ XPS characterization and density functional theory calculations reveal that the free-electrons of Au can transfer to sulfur-enriched NiS1+ x to induce the generation of electron-enriched Sδ - active centers, which boosts the desorption of Hads for rapid hydrogen formation via weakening the strong SHads bonds. Hence, an electron-enriched Sδ - -mediated mechanism is proposed. This work delivers a universal strategy for simultaneously increasing the active site number and optimizing the binding strength between the active sites and hydrogen adsorbates.
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Affiliation(s)
- 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, P. R. China
| | - Jiachao Xu
- State Key Laboratory of Silicate Materials for Architectures and School of Chemistry, Chemical Engineering and Life Sciences, Wuhan University of Technology, Wuhan, 430070, P. R. China
| | - Linxi Wang
- Laboratory of Solar Fuel, Faculty of Materials Science and Chemistry, China University of Geosciences, Wuhan, 430070, P. R. China
| | - Bicheng Zhu
- Laboratory of Solar Fuel, Faculty of Materials Science and Chemistry, China University of Geosciences, Wuhan, 430070, P. R. 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, P. R. China
- Laboratory of Solar Fuel, Faculty of Materials Science and Chemistry, China University of Geosciences, Wuhan, 430070, P. R. China
| | - Jiaguo Yu
- Laboratory of Solar Fuel, Faculty of Materials Science and Chemistry, China University of Geosciences, Wuhan, 430070, P. R. China
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Tu LH, Zhu JH, Tanjung AP, Wang M, Kang J, Wang AJ, Mei LP, Xue Y, Song P. A signal-off photoelectrochemical aptasensor for ultrasensitive 17β-estradiol detection based on rose-like CdS@C nanostructure and enzymatic amplification. Mikrochim Acta 2022; 189:56. [PMID: 35006398 DOI: 10.1007/s00604-022-05164-1] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2021] [Accepted: 12/26/2021] [Indexed: 11/29/2022]
Abstract
Carbon-coated cadmium sulfide rose-like nanostructures (CdS@C NRs) were prepared via a facile solvothermal approach and used as the photoelectrochemical (PEC) sensing platform for the integration of functional biomolecules. Based on this, a novel "signal-off" PEC aptasensor mediated by enzymatic amplification was proposed for the sensitive and selective detection of 17β-estradiol (E2). In the presence of E2, alkaline phosphatase-modified aptamer (ALP-apta) were released from the electrode surface through the specific recognition with E2, which caused the negative effect on PEC response due to the decrease of ascorbic acid (AA) produced by the ALP in situ enzymatic catalysis. The developed PEC aptasensor for detection of E2 exhibited a wide linear range of 1.0-250 nM, with the low detection limit of 0.37 nM. This work provides novel insight into the design of potential phoelectroactive materials and the application of signal amplification strategy in environmental analysis field.
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Affiliation(s)
- Lian-Hong Tu
- College of Geography and Environmental Sciences, College of Chemistry and Life Sciences, Zhejiang Normal University, Jinhua, 321004, China
| | - Jian-Hong Zhu
- College of Geography and Environmental Sciences, College of Chemistry and Life Sciences, Zhejiang Normal University, Jinhua, 321004, China
| | - Aisyah-Protonia Tanjung
- College of Geography and Environmental Sciences, College of Chemistry and Life Sciences, Zhejiang Normal University, Jinhua, 321004, China
| | - Min Wang
- College of Geography and Environmental Sciences, College of Chemistry and Life Sciences, Zhejiang Normal University, Jinhua, 321004, China
| | - Jinwei Kang
- College of Geography and Environmental Sciences, College of Chemistry and Life Sciences, Zhejiang Normal University, Jinhua, 321004, China
| | - Ai-Jun Wang
- College of Geography and Environmental Sciences, College of Chemistry and Life Sciences, Zhejiang Normal University, Jinhua, 321004, China
| | - Li-Ping Mei
- College of Geography and Environmental Sciences, College of Chemistry and Life Sciences, Zhejiang Normal University, Jinhua, 321004, China.
| | - Yadong Xue
- Central Laboratory, Affiliated Jinhua Hospital, Zhejiang University School of Medicine, Jinhua, 321000, China.
| | - Pei Song
- Central Laboratory, Affiliated Jinhua Hospital, Zhejiang University School of Medicine, Jinhua, 321000, China.
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Zhou Z, Bie C, Li P, Tan B, Shen Y. A thioether-functionalized pyrene-based covalent organic framework anchoring ultrafine Au nanoparticles for efficient photocatalytic hydrogen generation. CHINESE JOURNAL OF CATALYSIS 2022. [DOI: 10.1016/s1872-2067(22)64118-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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20
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Zhang J, Yang G, He B, Cheng B, Li Y, Liang G, Wang L. Electron transfer kinetics in CdS/Pt heterojunction photocatalyst during water splitting. CHINESE JOURNAL OF CATALYSIS 2022. [DOI: 10.1016/s1872-2067(22)64108-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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21
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Hou T, Chen H, Li Y, Wang H, Yu F, Li C, Lin H, Li S, Wang L. Unique Cd 0.5Zn 0.5S/WO 3-x direct Z-scheme heterojunction with S, O vacancies and twinning superlattices for efficient photocatalytic water-splitting. Dalton Trans 2021; 51:1150-1162. [PMID: 34939639 DOI: 10.1039/d1dt03561d] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Photocatalytic water-splitting employing the Z-scheme semiconductor systems mimicking natural photosynthesis is regarded as a promising way to achieve efficient soalr-to-H2 conversion. Nevertheless, it still remains a big challenge to design high-performance direct Z-scheme photocatalysts without the use of noble metals as electron mediators. Herein, a unique Cd0.5Zn0.5S/WO3-x direct Z-scheme heterojunction was constructed for the first time, which consisted of smaller O-vacancy-decorated WO3-x nanocrystals anchoring on Cd0.5Zn0.5S nanocrystals with S vacancies and zinc blende/wurtzite (ZB/WZ) twinning superlattices. Under visible-light (λ > 420 nm) irradiation, the Cd0.5Zn0.5S/WO3-x composites exhibited an outstanding H2 evolution reaction (HER) activity of 20.50 mmol h-1 g-1 (corresponding to the apparent quantum efficiency of 18.0% at 420 nm), which is much superior to that of WO3-x, Cd0.5Zn0.5S, and Cd0.5Zn0.5S loaded with Pt. Interestingly, the introduced O and S vacancies contributed to improving the HER activity of Cd0.5Zn0.5S/WO3-x significantly. Moreover, the cycling and long-term HER measurements confirmed the robust photocatalytic stability of Cd0.5Zn0.5S/WO3-x for H2 production. The excellent light harvesting and efficient spatial charge separation induced by the ZB/WZ twinning homojunctions and defect-promoted direct Z-scheme charge-transfer pathway are responsible for the exceptional HER capability. Our study could enlighten the rational engineering and optimization of semiconductor nanostructures for energy and environmental applications.
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Affiliation(s)
- Teng Hou
- Key Laboratory of Eco-chemical Engineering, Key Laboratory of Optic-electric Sensing and Analytical Chemistry of Life Science, Shandong Provincial Key Laboratory of Olefin Catalysis and Polymerization, Taishan Scholar Advantage and Characteristic Discipline Team of Eco-Chemical Process and Technology, College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, Qingdao 266042, P. R. China.
| | - Hanchu Chen
- Key Laboratory of Eco-chemical Engineering, Key Laboratory of Optic-electric Sensing and Analytical Chemistry of Life Science, Shandong Provincial Key Laboratory of Olefin Catalysis and Polymerization, Taishan Scholar Advantage and Characteristic Discipline Team of Eco-Chemical Process and Technology, College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, Qingdao 266042, P. R. China. .,Shandong Provincial Key Laboratory of Olefin Catalysis and Polymerization, Key Laboratory of Rubber-Plastics of Ministry of Education, School of Polymer Science and Engineering, Qingdao University of Science and Technology, Qingdao 266042, P. R. China
| | - Yanyan Li
- Key Laboratory of Eco-chemical Engineering, Key Laboratory of Optic-electric Sensing and Analytical Chemistry of Life Science, Shandong Provincial Key Laboratory of Olefin Catalysis and Polymerization, Taishan Scholar Advantage and Characteristic Discipline Team of Eco-Chemical Process and Technology, College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, Qingdao 266042, P. R. China.
| | - Hui Wang
- Key Laboratory of Eco-chemical Engineering, Key Laboratory of Optic-electric Sensing and Analytical Chemistry of Life Science, Shandong Provincial Key Laboratory of Olefin Catalysis and Polymerization, Taishan Scholar Advantage and Characteristic Discipline Team of Eco-Chemical Process and Technology, College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, Qingdao 266042, P. R. China. .,Shandong Provincial Key Laboratory of Olefin Catalysis and Polymerization, Key Laboratory of Rubber-Plastics of Ministry of Education, School of Polymer Science and Engineering, Qingdao University of Science and Technology, Qingdao 266042, P. R. China
| | - Fengli Yu
- Key Laboratory of Eco-chemical Engineering, Key Laboratory of Optic-electric Sensing and Analytical Chemistry of Life Science, Shandong Provincial Key Laboratory of Olefin Catalysis and Polymerization, Taishan Scholar Advantage and Characteristic Discipline Team of Eco-Chemical Process and Technology, College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, Qingdao 266042, P. R. China.
| | - Caixia Li
- Shandong Engineering Research Center for Marine Environment Corrosion and Safety Protection, College of Environment and Safety Engineering, Qingdao University of Science and Technology, Qingdao 266042, P. R. China
| | - Haifeng Lin
- Key Laboratory of Eco-chemical Engineering, Key Laboratory of Optic-electric Sensing and Analytical Chemistry of Life Science, Shandong Provincial Key Laboratory of Olefin Catalysis and Polymerization, Taishan Scholar Advantage and Characteristic Discipline Team of Eco-Chemical Process and Technology, College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, Qingdao 266042, P. R. China.
| | - Shaoxiang Li
- Shandong Engineering Research Center for Marine Environment Corrosion and Safety Protection, College of Environment and Safety Engineering, Qingdao University of Science and Technology, Qingdao 266042, P. R. China
| | - Lei Wang
- Key Laboratory of Eco-chemical Engineering, Key Laboratory of Optic-electric Sensing and Analytical Chemistry of Life Science, Shandong Provincial Key Laboratory of Olefin Catalysis and Polymerization, Taishan Scholar Advantage and Characteristic Discipline Team of Eco-Chemical Process and Technology, College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, Qingdao 266042, P. R. China. .,Shandong Engineering Research Center for Marine Environment Corrosion and Safety Protection, College of Environment and Safety Engineering, Qingdao University of Science and Technology, Qingdao 266042, P. R. China
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22
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Wang Z, Wang L, Cheng B, Yu H, Yu J. Photocatalytic H 2 Evolution Coupled with Furfuralcohol Oxidation over Pt-Modified ZnCdS Solid Solution. SMALL METHODS 2021; 5:e2100979. [PMID: 34927971 DOI: 10.1002/smtd.202100979] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/20/2021] [Revised: 09/13/2021] [Indexed: 06/14/2023]
Abstract
Coupling photocatalytic H2 production with organic synthesis attracts immense interest in the energy and chemical engineering field for the low-cost, clean, and sustainable generation of green energy and value-added products. Nevertheless, the performance of current photocatalysts is greatly limited by grievous charge recombination and tardy H2 evolution. To tackle these issues, a Pt nanocluster-modified ZnCdS solid solution is fabricated for photocatalytic H2 production and selective furfuralcohol oxidation. The internal electric field inside the ZnCdS and Schottky junction between ZnCdS and Pt nanoclusters drastically ameliorate charge separation. Meanwhile, the Pt nanoclusters remarkably expedite the H2 evolution kinetics on ZnCdS. As a result, the H2 production rate over Pt-loaded ZnCdS reaches 1045 µmol g-1 h-1 , which is about 26- and 70-fold that of CdS and ZnS, respectively. Under light irradiation for 3 h, the conversion of furfuralcohol to furfural reaches 71% with 89% furfural selectivity. The photocatalytic mechanism is investigated by in situ characterizations and theoretical calculations.
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Affiliation(s)
- Zhongliao Wang
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan, 430070, P. R. China
| | - Linxi Wang
- Laboratory of Solar Fuel, Faculty of Materials Science and Chemistry, China University of Geosciences, Wuhan, 430074, 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
| | - Huogen 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, Wuhan, 430074, 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, Wuhan, 430074, P. R. China
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23
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Zheng Z, Wang T, Han F, Yang Q, Li B. Synthesis of Ni modified Au@CdS core-shell nanostructures for enhancing photocatalytic coproduction of hydrogen and benzaldehyde under visible light. J Colloid Interface Sci 2021; 606:47-56. [PMID: 34388572 DOI: 10.1016/j.jcis.2021.07.150] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2021] [Revised: 07/28/2021] [Accepted: 07/29/2021] [Indexed: 12/11/2022]
Abstract
The development of visible light responsive photocatalysts for simultaneous production of hydrogen (H2) fuel and value-added chemicals is greatly promising to solve the energy and environmental issues by improving the utilization efficiency of solar energy. Herein, the three-component Ni/(Au@CdS) core-shell nanostructures were constructed by the hydrothermal synthesis followed with photodeposition. The intimate integration of plasmonic Au nanospheres and visible-light responsive CdS shells modified with Ni cocatalyst facilitated the generation and separation of electron-hole pairs as well as reduced the overpotential of hydrogen evolution. The Ni/(Au@CdS) photocatalyst exhibited excellent performance toward the selective transformation of benzyl alcohol under anaerobic conditions, and the yields of H2 and benzaldehyde reached up to 3882 and 4242 μmol·g-1·h-1, respectively. The apparent quantum efficiency (AQE) was determined to be 4.09% under the irradiation of 420 nm. The systematic studies have verified the synergy of plasmonic effect and metal cocatalyst on enhancing the photocatalysis. This work highlights the desirable design and potential application of plasmonic photocatalysts for solar-driven coproduction of H2 fuel and high-value chemicals.
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Affiliation(s)
- Ziqiang Zheng
- Department of Chemistry, Key Laboratory of Surface & Interface Science of Polymer Materials of Zhejiang Province, Zhejiang Sci-Tech University, Hangzhou 310018, China
| | - Ting Wang
- Department of Chemistry, Key Laboratory of Surface & Interface Science of Polymer Materials of Zhejiang Province, Zhejiang Sci-Tech University, Hangzhou 310018, China
| | - Fang Han
- Anhui Entry-Exit Inspection and Quarantine Technical Center, 329 Tunxi Road, Hefei, Anhui 230029, China
| | - Qing Yang
- Department of Chemistry, Key Laboratory of Surface & Interface Science of Polymer Materials of Zhejiang Province, Zhejiang Sci-Tech University, Hangzhou 310018, China
| | - Benxia Li
- 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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Xu Y, Xie Z, Yu R, Chen M, Jiang D. Co(OH) 2 water oxidation cocatalyst-decorated CdS nanowires for enhanced photocatalytic CO 2 reduction performance. Dalton Trans 2021; 50:10159-10167. [PMID: 34231595 DOI: 10.1039/d1dt01082d] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Photocatalytic CO2 reduction is a promising technology to resolve the greenhouse effect and energy crisis. In this work, a Co(OH)2 nanoparticle decorated CdS nanowire (Co(OH)2/CdS) based heterostructured photocatalyst was prepared via a solvothermal and subsequent co-precipitation method, and it was used for photocatalytic CO2 reduction. The optimal Co(OH)2/CdS photocatalyst achieves a CO production rate of 8.11 μmol g-1 h-1 under visible light irradiation (λ > 420 nm), which is about 2 times higher than that of bare CdS. The experimental results show that a Co(OH)2 cocatalyst possesses a great capability of consuming holes, which promotes the oxygen-producing half-reaction and accelerates charge separation, thus enhancing the CO2 photoreduction performance of CdS. Notably, without using complex synthesis processes, hazardous substances or expensive ingredients, Co(OH)2/CdS shows high light absorption, efficient charge separation and complete CO product selectivity. This work offers a new pathway for the construction of cost-effective photocatalytic materials to achieve highly efficient CO2 reduction activity by the integration of a Co(OH)2 cocatalyst.
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Affiliation(s)
- Yuyan Xu
- School of Chemistry and Chemical Engineering, Jiangsu University, Xuefu Road 301, Zhenjiang 212013, China.
| | - Zhongkai Xie
- School of Chemistry and Chemical Engineering, Jiangsu University, Xuefu Road 301, Zhenjiang 212013, China.
| | - Rui Yu
- School of Chemistry and Chemical Engineering, Jiangsu University, Xuefu Road 301, Zhenjiang 212013, China.
| | - Min Chen
- School of Chemistry and Chemical Engineering, Jiangsu University, Xuefu Road 301, Zhenjiang 212013, China.
| | - Deli Jiang
- School of Chemistry and Chemical Engineering, Jiangsu University, Xuefu Road 301, Zhenjiang 212013, China.
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