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Pang X, Li Y, Wu X, Zhang B, Hao M, Zhu Y, Zhang Y, Qin C, Zhan H, Qin C. Phosphate ester functionalized fluorene-benzothiadiazole alternating copolymer/hydroxylated g-C 3N 4 heterojunctions for efficient hydrogen evolution under visible-light irradiation. J Colloid Interface Sci 2023; 652:1405-1416. [PMID: 37659309 DOI: 10.1016/j.jcis.2023.08.153] [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: 06/08/2023] [Revised: 08/17/2023] [Accepted: 08/24/2023] [Indexed: 09/04/2023]
Abstract
It is highly desirable to explore functionalized polymer semiconductor/g-C3N4 heterojunction photocatalysts with the tight interfacial connection for promoting the photogenerated electron-hole pair separation, improving the hydrophilicity, extending the visible light response and achieving the efficient visible light-driven H2 evolution. Herein, we synthesized novel poly[9,9-bis(3-ethyl phosphate propyl)fluorene-alt-benzothiadiazole] (PPFBT) with a phosphate ester on every repeating unit by the Suzuki polymerization and then fabricated PPFBT/hydroxylated g-C3N4 (PPFBT/CN-OH) heterojunctions via a surface hydroxyl-induced assembly process. The ratio-optimized 5PPFBT/CN-OH shows the hydrogen evolution activity of 2662.4 μmol·g-1·h-1, an 11.1-time enhancement compared to CN-OH. The improved photocatalytic activity is mainly attributed to the enhanced electron-hole pair separation due to the tight interfacial connection by hydrogen bond (P=O…H-O) and N…S interactions between PPFBT and CN-OH. It is verified that abundant phosphate ester groups of PPFBT improve the hydrophilicity and form coordination bonds with platinum (P=O:Pt) as a cocatalyst to facilitate water splitting for H2 evolution. It is also confirmed that the enhanced electron-hole pair separation is mainly dependent on the excited high-energy level electron transfer from CN-OH to PPFBT. This work provides a rational molecular design strategy for constructing efficient functionalized polymer semiconductor/g-C3N4 heterojunctions for sunlight-driven H2 evolution.
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Affiliation(s)
- Xulong Pang
- Key Laboratory of Functional Inorganic Material Chemistry (Ministry of Education), School of Chemistry and Materials Science, International Joint Research Center for Catalytic Technology, Heilongjiang University, Harbin 150080, People's Republic of China
| | - Yong Li
- Key Laboratory of Functional Inorganic Material Chemistry (Ministry of Education), School of Chemistry and Materials Science, International Joint Research Center for Catalytic Technology, Heilongjiang University, Harbin 150080, People's Republic of China
| | - Xiaofu Wu
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin 130022, People's Republic of China
| | - Bingmiao Zhang
- Key Laboratory of Functional Inorganic Material Chemistry (Ministry of Education), School of Chemistry and Materials Science, International Joint Research Center for Catalytic Technology, Heilongjiang University, Harbin 150080, People's Republic of China
| | - Ming Hao
- Key Laboratory of Functional Inorganic Material Chemistry (Ministry of Education), School of Chemistry and Materials Science, International Joint Research Center for Catalytic Technology, Heilongjiang University, Harbin 150080, People's Republic of China
| | - Yan Zhu
- Key Laboratory of Functional Inorganic Material Chemistry (Ministry of Education), School of Chemistry and Materials Science, International Joint Research Center for Catalytic Technology, Heilongjiang University, Harbin 150080, People's Republic of China
| | - Yi Zhang
- Key Laboratory of Functional Inorganic Material Chemistry (Ministry of Education), School of Chemistry and Materials Science, International Joint Research Center for Catalytic Technology, Heilongjiang University, Harbin 150080, People's Republic of China
| | - Chuanjiang Qin
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin 130022, People's Republic of China
| | - Hongmei Zhan
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin 130022, People's Republic of China
| | - Chuanli Qin
- Key Laboratory of Functional Inorganic Material Chemistry (Ministry of Education), School of Chemistry and Materials Science, International Joint Research Center for Catalytic Technology, Heilongjiang University, Harbin 150080, People's Republic of China.
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2
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Li H, Tao S, Wan S, Qiu G, Long Q, Yu J, Cao S. S-scheme heterojunction of ZnCdS nanospheres and dibenzothiophene modified graphite carbon nitride for enhanced H2 production. CHINESE JOURNAL OF CATALYSIS 2023. [DOI: 10.1016/s1872-2067(22)64201-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/25/2023]
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3
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Zang S, Cai X, Chen M, Teng D, Jing F, Leng Z, Zhou Y, Lin F. Tunable Carrier Transfer of Polymeric Carbon Nitride with Charge-Conducting CoV2O6∙2H2O for Photocatalytic O2 Evolution. NANOMATERIALS 2022; 12:nano12111931. [PMID: 35683786 PMCID: PMC9182530 DOI: 10.3390/nano12111931] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/02/2022] [Revised: 05/23/2022] [Accepted: 06/02/2022] [Indexed: 02/07/2023]
Abstract
Photocatalytic water splitting is one of the promising approaches to solving environmental problems and energy crises. However, the sluggish 4e− transfer kinetics in water oxidation half-reaction restricts the 2e− reduction efficiency in photocatalytic water splitting. Herein, cobalt vanadate-decorated polymeric carbon nitride (named CoVO/PCN) was constructed to mediate the carrier kinetic process in a photocatalytic water oxidation reaction (WOR). The photocatalysts were well-characterized by various physicochemical techniques such as XRD, FT-IR, TEM, and XPS. Under UV and visible light irradiation, the O2 evolution rate of optimized 3 wt% CoVO/PCN reached 467 and 200 μmol h−1 g−1, which were about 6.5 and 5.9 times higher than that of PCN, respectively. Electrochemical tests and PL results reveal that the recombination of photogenerated carriers on PCN is effectively suppressed and the kinetics of WOR is significantly enhanced after CoVO introduction. This work highlights key features of the tuning carrier kinetics of PCN using charge-conducting materials, which should be the basis for the further development of photocatalytic O2 reactions.
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Affiliation(s)
- Shaohong Zang
- Institute of Innovation & Application, National Engineering Research Center for Marine Aquaculture, Zhejiang Ocean University, Zhoushan 316022, China; (S.Z.); (X.C.); (M.C.); (D.T.); (F.J.); (Y.Z.)
| | - Xiaorong Cai
- Institute of Innovation & Application, National Engineering Research Center for Marine Aquaculture, Zhejiang Ocean University, Zhoushan 316022, China; (S.Z.); (X.C.); (M.C.); (D.T.); (F.J.); (Y.Z.)
| | - Mengshan Chen
- Institute of Innovation & Application, National Engineering Research Center for Marine Aquaculture, Zhejiang Ocean University, Zhoushan 316022, China; (S.Z.); (X.C.); (M.C.); (D.T.); (F.J.); (Y.Z.)
| | - Dehong Teng
- Institute of Innovation & Application, National Engineering Research Center for Marine Aquaculture, Zhejiang Ocean University, Zhoushan 316022, China; (S.Z.); (X.C.); (M.C.); (D.T.); (F.J.); (Y.Z.)
| | - Fei Jing
- Institute of Innovation & Application, National Engineering Research Center for Marine Aquaculture, Zhejiang Ocean University, Zhoushan 316022, China; (S.Z.); (X.C.); (M.C.); (D.T.); (F.J.); (Y.Z.)
| | - Zhe Leng
- Institute of Innovation & Application, National Engineering Research Center for Marine Aquaculture, Zhejiang Ocean University, Zhoushan 316022, China; (S.Z.); (X.C.); (M.C.); (D.T.); (F.J.); (Y.Z.)
- Correspondence: (Z.L.); (F.L.); Tel.: +86-0580-2262589 (Z.L.)
| | - Yingtang Zhou
- Institute of Innovation & Application, National Engineering Research Center for Marine Aquaculture, Zhejiang Ocean University, Zhoushan 316022, China; (S.Z.); (X.C.); (M.C.); (D.T.); (F.J.); (Y.Z.)
| | - Feng Lin
- College of Chemical and Materials Engineering, Quzhou University, Quzhou 324000, China
- Correspondence: (Z.L.); (F.L.); Tel.: +86-0580-2262589 (Z.L.)
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4
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Zhang H, Liu J, Jiang L. Photocatalytic hydrogen evolution based on carbon nitride and organic semiconductors. NANOTECHNOLOGY 2022; 33:322001. [PMID: 35447618 DOI: 10.1088/1361-6528/ac68f6] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/29/2021] [Accepted: 04/21/2022] [Indexed: 06/14/2023]
Abstract
Photocatalytic hydrogen evolution (PHE) presents a promising way to solve the global energy crisis. Metal-free carbon nitride (CN) and organic semiconductors photocatalysts have drawn intense interests due to their fascinating properties such as tunable molecular structure, electronic states, strong visible-light absorption, low-cost etc. In this paper, the recent progresses of photocatalytic hydrogen production based on organic photocatalysts, including CN, linear polymers, conjugated porous polymers and small molecules, are reviewed, with emphasis on the various strategies to improve PHE efficiency. Finally, the possible future research trends in the organic photocatalysts are prospected.
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Affiliation(s)
- Hantang Zhang
- College of Chemistry and Material Science, Shandong Agriculture University, Taian 271000, People's Republic of China
| | - Jie Liu
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Organic Solids, Institute of Chemistry, Chinese Academy of Science, Beijing 100190, People's Republic of China
| | - Lang Jiang
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Organic Solids, Institute of Chemistry, Chinese Academy of Science, Beijing 100190, People's Republic of China
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5
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Enhanced Photocatalytic Overall Water Splitting from an Assembly of Donor-π-Acceptor Conjugated Polymeric Carbon Nitride. J Colloid Interface Sci 2022; 624:411-422. [DOI: 10.1016/j.jcis.2022.05.139] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2020] [Revised: 05/14/2022] [Accepted: 05/23/2022] [Indexed: 12/13/2022]
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6
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Wang X, Li T, ZHU PENGFEI, Jin Z. Synergistic effect of MoO2/CeO2 S-scheme heterojunction on carbon rods for enhanced photocatalytic hydrogen evolution. Dalton Trans 2022; 51:2912-2922. [DOI: 10.1039/d1dt03605j] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The separation efficiency of photogenerated carriers is a key factor affecting photocatalytic hydrogen evolution activity. However, loading precious metals is a cost problem, so this work introduces cheap carbon rods...
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Liu Y, Ma X, Jin Z. Engineering a NiAl-LDH/CoS x S-Scheme heterojunction for enhanced photocatalytic hydrogen evolution. J Colloid Interface Sci 2021; 609:686-697. [PMID: 34836652 DOI: 10.1016/j.jcis.2021.11.065] [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: 07/30/2021] [Revised: 11/12/2021] [Accepted: 11/13/2021] [Indexed: 10/19/2022]
Abstract
The use of semiconductors to construct heterojunctions to suppress the rapid recombination of photogenerated charges and holes is considered to be an effective way to improve the efficiency of photocatalytic hydrogen evolution. Herein, cobalt sulfide (CoSx) nanoparticles are cultivated in situ in the folds of three-dimensional flower-like nickel-aluminium layered double hydroxides (NiAl-LDHs) using a facile solvothermal method. The hydrogen production rate of the binary CoSx/NiAl-LDH heterojunction reaches 3678.59 μmol/g/h, which is 83.74 and 22 times the rates of CoSx and NiAl-LDH, respectively. The unique three-dimensional structure of NiAl-LDH facilitates the growth of CoSx and shortens the transfer pathway of photogenerated electrons. More importantly, the built-in electric field formed at the interface and the S-type charge transport mechanism caused by the bending of the energy band enhance not only charge separation but also maintain the strong oxidation ability of the holes. In this study, the newly designed S-scheme heterojunction offers a new strategy for enhancing photocatalytic water splitting.
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Affiliation(s)
- Yanan Liu
- 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, PR China.
| | - Xiaohua Ma
- 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, PR 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, PR China.
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8
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Liu Y, Li B, Xiang Z. Pathways towards Boosting Solar-Driven Hydrogen Evolution of Conjugated Polymers. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2021; 17:e2007576. [PMID: 34160904 DOI: 10.1002/smll.202007576] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/01/2020] [Revised: 01/16/2021] [Indexed: 06/13/2023]
Abstract
Photocatalytic H2 evolution under solar illumination has been considered to be a promising technology for green energy resources. Developing highly efficient photocatalysts for photocatalytic water splitting is long-term desired but still challenging. Conjugated polymers (CPs) have attracted ongoing attention and have been considered to be promising alternatives for solar-driven H2 production due to the excellent merits of the large π-conjugated system, versatile structures, tunable photoelectric properties, and well-defined chemical composites. The excellent merits have offered numerous methods for boosting photocatalytic hydrogen evolution (PHE) of initial CP-based photocatalysts, whose apparent quantum yield is dramatically increased from <1 to >20% in recent five years. According to the photocatalytic mechanism, this review herein systematically summarizes three major strategies for boosting photocatalytic H2 production of CPs: 1) enhancing visible light absorption, 2) suppressing recombination of electron-hole pairs, and 3) boosting surface catalytic reaction, mainly involving eleven methods, that is, copolymerization, modifying cross-linker, constructing a donor-acceptor structure, functionalization, fabricating organic heterojunction, loading cocatalyst, and surface modification. Finally, the perspectives towards the future development of PHE are proposed.
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Affiliation(s)
- Yaoyao Liu
- State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology, Beijing, 100029, P. R. China
| | - Bingjie Li
- The First Affiliated Hospital Zhengzhou University, 1 Jianshe Street, Zhengzhou, Henan, 450052, P. R. China
| | - Zhonghua Xiang
- State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology, Beijing, 100029, P. R. China
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9
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Song X, Zhang X, Wang M, Li X, Zhu Z, Huo P, Yan Y. Fabricating intramolecular donor-acceptor system via covalent bonding of carbazole to carbon nitride for excellent photocatalytic performance towards CO 2 conversion. J Colloid Interface Sci 2021; 594:550-560. [PMID: 33774411 DOI: 10.1016/j.jcis.2021.02.105] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2020] [Revised: 02/23/2021] [Accepted: 02/23/2021] [Indexed: 11/28/2022]
Abstract
Photocatalytic conversion of CO2 into hydrocarbon fuels is an ideal technology of mitigating greenhouse effect caused by excessive emission of CO2. However, the high recombination rate of electron-hole pairs and limited charge carriers transport speed constrained the catalytic performance of many semiconductor catalysts. In this contribution, a series of carbon nitride (g-CN) samples with intramolecular donor-acceptor (D-A) system were successfully prepared by introducing organic donor into their structures. Characterization results confirmed that carbazole was successful connected to the structure of g-CN via chemical bond. The formation of intramolecular D-A system greatly enlarged the light response region of g-CN-xDbc. In addition, a new charge transfer transition mode was formed in g-CN-0.01Dbc due to the incorporation carbazole, which enable it to use light with energy lower than the intrinsic absorption of g-CN. Meanwhile, the D-A structure led to the spatial separation of electrons and holes in g-CN-xDbc and significantly decreased the recombination rate of electron-hole pairs. The g-CN-0.01Dbc presented the best catalytic performance and the CO evolution rate was 9.6 times higher than that of g-CN. Moreover, the reaction was performed in water without any additive, which made it green and sustainable. DFT simulation confirmed the D-A structure and charge carrier migration direction in the prepared samples.
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Affiliation(s)
- Xianghai Song
- Institute of the Green Chemistry and Chemical Technology, School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, PR China
| | - Xinyu Zhang
- College of Science, Beihua University, Jilin 132013, PR China
| | - Mei Wang
- School of Agricultural Engineering, Jiangsu University, Zhenjiang 212013, PR China
| | - Xin Li
- Institute of the Green Chemistry and Chemical Technology, School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, PR China
| | - Zhi Zhu
- Institute of the Green Chemistry and Chemical Technology, School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, PR China
| | - Pengwei Huo
- Institute of the Green Chemistry and Chemical Technology, School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, PR China.
| | - Yongsheng Yan
- Institute of the Green Chemistry and Chemical Technology, School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, PR China.
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10
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Sheng ZQ, Xing YQ, Chen Y, Zhang G, Liu SY, Chen L. Nanoporous and nonporous conjugated donor-acceptor polymer semiconductors for photocatalytic hydrogen production. BEILSTEIN JOURNAL OF NANOTECHNOLOGY 2021; 12:607-623. [PMID: 34285864 PMCID: PMC8261276 DOI: 10.3762/bjnano.12.50] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/12/2021] [Accepted: 06/13/2021] [Indexed: 06/13/2023]
Abstract
Conjugated polymers (CPs) as photocatalysts have evoked substantial interest. Their geometries and physical (e.g., chemical and thermal stability and solubility), optical (e.g., light absorption range), and electronic properties (e.g., charge carrier mobility, redox potential, and exciton binding energy) can be easily tuned via structural design. In addition, they are of light weight (i.e., mainly composed of C, N, O, and S). To improve the photocatalytic performance of CPs and better understand the catalytic mechanisms, many strategies with respect to material design have been proposed. These include tuning the bandgap, enlarging the surface area, enabling more efficient separation of electron-hole pairs, and enhancing the charge carrier mobility. In particular, donor-acceptor (D-A) polymers were demonstrated as a promising platform to develop high-performance photocatalysts due to their easily tunable bandgaps, high charge carrier mobility, and efficient intramolecular charge transfer. In this minireview, recent advances of D-A polymers in photocatalytic hydrogen evolution are summarized with a particular focus on modulating the optical and electronic properties of CPs by varying the acceptor units. The challenges and prospects associated with D-A polymer-based photocatalysts are described as well.
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Affiliation(s)
- Zhao-Qi Sheng
- College of Materials, Metallurgical and Chemistry, Jiangxi University of Science and Technology, Ganzhou, 341000, China
| | - Yu-Qin Xing
- College of Materials, Metallurgical and Chemistry, Jiangxi University of Science and Technology, Ganzhou, 341000, China
| | - Yan Chen
- College of Materials, Metallurgical and Chemistry, Jiangxi University of Science and Technology, Ganzhou, 341000, China
| | - Guang Zhang
- Department of Chemistry, Tianjin University, Tianjin 300072, China
| | - Shi-Yong Liu
- College of Materials, Metallurgical and Chemistry, Jiangxi University of Science and Technology, Ganzhou, 341000, China
| | - Long Chen
- Department of Chemistry, Tianjin University, Tianjin 300072, China
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11
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Lv B, Feng X, Xi X, Feng X, Yuan Z, Yang Y, Zhang F. Noble-metal-free Cd 0.3Zn 0.7S-Ni(OH) 2 for high efficiency visible light photocatalytic hydrogen production. J Colloid Interface Sci 2021; 601:177-185. [PMID: 34082227 DOI: 10.1016/j.jcis.2021.05.130] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2021] [Revised: 05/21/2021] [Accepted: 05/21/2021] [Indexed: 02/07/2023]
Abstract
Heterogeneously structured materials with supported precious metals, such as Pd, Pt, and Ru, as co-catalysts are important catalysts for efficient photocatalytic water splitting. However, the high costs and low reserves of precious metals have been an obstacle to their application in hydrogen production. In this work, the noble-metal-free Cd0.3Zn0.7S solid solution was designed and synthesized with an optimized molar ratio of Cd/Zn for the best visible light photocatalytic performance. In addition, a heterojunction hybrid material formed between the Cd0.3Zn0.7S and Ni(OH)2 nanosheet was engineered to improve the utilization of light and to inhibit the recombination of holes and electrons. Ni(OH)2 nanosheets assisted the transfer of the photoexcited electrons to participate in the reduction reactions which is critical for efficient and rapid catalytic hydrogen production. The photoelectrochemical property of the hybrid material was investigated with UV-vis absorption, photoluminance (PL) and electrochemical impedance spectroscopy measurements. The mechanism of the high-efficiency and low-cost photocatalytic hydrogen production was established by analyzing the hydrogen evolution kinetics. With the success of replacing precious metal with nickel-based surface heterostructure, this work is expected to provide a new type of photocatalyst for the application of photocatalytic hydrogen production.
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Affiliation(s)
- Bo Lv
- Powder Metallurgy Research Institute, Central South University, Changsha 410083, China
| | - Xuefan Feng
- Powder Metallurgy Research Institute, Central South University, Changsha 410083, China
| | - Xiaoping Xi
- Changsha Research Institute of Mining and Metallurgy Co. Ltd, Changsha 410083, China
| | - Xinyan Feng
- Powder Metallurgy Research Institute, Central South University, Changsha 410083, China
| | - Zhenyu Yuan
- Powder Metallurgy Research Institute, Central South University, Changsha 410083, China
| | - Yu Yang
- Powder Metallurgy Research Institute, Central South University, Changsha 410083, China
| | - Fuqin Zhang
- Powder Metallurgy Research Institute, Central South University, Changsha 410083, China.
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12
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Construction of Carbon Nitride Based Intramolecular D–A System for Effective Photocatalytic Reduction of CO2. Catal Letters 2021. [DOI: 10.1007/s10562-021-03644-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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13
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Cai J, Wei H, Zhang Y, Cai R, Zhang X, Wang Y, Liu J, Tan HH, Xie T, Wu Y. Designed Construction of SrTiO 3 /SrSO 4 /Pt Heterojunctions with Boosted Photocatalytic H 2 Evolution Activity. Chemistry 2021; 27:7300-7306. [PMID: 33554407 DOI: 10.1002/chem.202100101] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2021] [Indexed: 02/02/2023]
Abstract
Efficient separation of photogenerated electron-hole pairs is a crucial factor for high-performance photocatalysts. Effective electron-hole separation and migration could be achieved by heterojunctions with suitable band structures. Herein, a porous SrTiO3 /SrSO4 heterojunction is prepared by a sol-gel method at room temperature followed by an annealing process. XRD characterization suggests high crystallinity of the heterostructure. A well-defined interface between the two phases is confirmed by high-resolution (HR)TEM. The photocatalytic H2 evolution productivity of the SrTiO3 /SrSO4 heterojunction with Pt as co-catalyst reaches 396.82 μmol g-1 h-1 , which is 16 times higher than that of SrTiO3 /Pt. The boosted photocatalytic activity of SrTiO3 /SrSO4 /Pt can be ascribed to the presence of SrSO4 , which promotes the transfer and migration of photogenerated carriers by forming the heterojunction and porous structure, which provides a large amount of active sites. This novel porous heterostructure brings new ideas for the development of high-efficiency photocatalysts for H2 release.
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Affiliation(s)
- Jingyi Cai
- School of Materials Science and Engineering, Hefei University of Technology, Hefei, 230009, Anhui, China.,Key Laboratory of Advanced Functional Materials and Devices of Anhui Province, Hefei, 230009, China
| | - Haoshan Wei
- School of Materials Science and Engineering, Hefei University of Technology, Hefei, 230009, Anhui, China.,Key Laboratory of Advanced Functional Materials and Devices of Anhui Province, Hefei, 230009, China
| | - Yong Zhang
- School of Materials Science and Engineering, Hefei University of Technology, Hefei, 230009, Anhui, China.,Key Laboratory of Advanced Functional Materials and Devices of Anhui Province, Hefei, 230009, China
| | - Rui Cai
- School of Materials Science and Engineering, Hefei University of Technology, Hefei, 230009, Anhui, China.,Key Laboratory of Advanced Functional Materials and Devices of Anhui Province, Hefei, 230009, China
| | - Xueru Zhang
- Instrumental Analysis Center, Hefei University of Technology, Hefei, 230009, China
| | - Yan Wang
- School of Materials Science and Engineering, Hefei University of Technology, Hefei, 230009, Anhui, China.,Key Laboratory of Advanced Functional Materials and Devices of Anhui Province, Hefei, 230009, China
| | - Jiaqin Liu
- Institute of Industry & Equipment Technology, Hefei University of Technology, Hefei, 230009, Anhui, China
| | - Hark Hoe Tan
- China International S&T Cooperation Base for Advanced Energy and Environmental Materials, Hefei, 230009, Anhui, China.,Department of Electronic Materials Engineering, Research School of Physics and Engineering, The Australian National University, Canberra, ACT, 2601, Australia
| | - Ting Xie
- Key Laboratory of Advanced Functional Materials and Devices of Anhui Province, Hefei, 230009, China
| | - Yucheng Wu
- School of Materials Science and Engineering, Hefei University of Technology, Hefei, 230009, Anhui, China.,Key Laboratory of Advanced Functional Materials and Devices of Anhui Province, Hefei, 230009, China
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14
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Tang D, Shao C, Jiang S, Sun C, Song S. Graphitic C 2N 3: An Allotrope of g-C 3N 4 Containing Active Azide Pentagons as Metal-Free Photocatalyst for Abundant H 2 Bubble Evolution. ACS NANO 2021; 15:7208-7215. [PMID: 33871961 DOI: 10.1021/acsnano.1c00477] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
A g-C3N4 allotrope, a curved leaf-like graphitic C2N3 (g-C2N3) with an intrinsic spontaneous polarization electric field (ISPEF), has been constructed for efficient solar energy conversion into H2 energy via photocatalytic H2O splitting. The curved leaf-like π-delocalization g-C2N3 was composed of aromatic azide pentagons and normal triazine hexagons obtained by cycloaddition between -C≡N groups from dicyandiamide polymerization and azide from the heat-treated polypyrrole fibers. Under light irradiation (λ > 420 nm), photo-generated charges are driven to separate efficiently and transfer from bulk to active sites of the surface under ISPEF that is opposite to the Coulomb field. Consequently, without any cocatalyst, g-C3N4 allotrope demonstrates a very high H2-production activity of 14.9 mmol g-1 h-1 accompanied by a lot of H2 bubbles, which is 2.6 times of g-C3N4 loading with Pt. In comparison with the reported metal-free photocatalysts or those supported with noble metals, g-C3N4 allotrope (i.e., leaf-like g-C2N3) is confirmed to be the best metal-free photocatalyst for H2O splitting into H2 fuel so far. The contructed leaf-like g-C2N3 with SPEF supplies a suitable platform for solar energy conversion into H2 fuel, which actively contributes to clean energy production.
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Affiliation(s)
- Dongmei Tang
- School of Material Science and Chemical Engineering, Ningbo University, Fenghua Road 818, Ningbo 315211, People's Republic of China
| | - Chengtian Shao
- Department of Chemistry, Chung Yuan Christian University, Taoyuan City 32033, Taiwan
| | - Shujuan Jiang
- School of Material Science and Chemical Engineering, Ningbo University, Fenghua Road 818, Ningbo 315211, People's Republic of China
| | - Chuanzhi Sun
- College of Chemistry, Chemical Engineering and Materials Science, Shandong Provincial Key Laboratory of Clean Production of Fine Chemicals, Shandong Normal University, Jinan 250014, People's Republic of China
| | - Shaoqing Song
- School of Material Science and Chemical Engineering, Ningbo University, Fenghua Road 818, Ningbo 315211, People's Republic of China
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15
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Lai JY, Zhang WD, Yu YX. Building sp carbon-bridged g-C3N4-based electron donor-π-acceptor unit for efficient photocatalytic water splitting. MOLECULAR CATALYSIS 2021. [DOI: 10.1016/j.mcat.2021.111518] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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16
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Du X, Song S, Wang Y, Jin W, Ding T, Tian Y, Li X. Facile one-pot synthesis of defect-engineered step-scheme WO 3/g-C 3N 4 heterojunctions for efficient photocatalytic hydrogen production. Catal Sci Technol 2021. [DOI: 10.1039/d0cy02478c] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Defect-engineered step-scheme WO3/g-C3N4 heterojunctions synthesized by a facile one-pot method greatly improve the photocatalytic activity for hydrogen evolution.
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Affiliation(s)
- Xiya Du
- Collaborative Innovation Center of Chemical Science and Engineering (Tianjin)
- State Key Laboratory of Chemical Engineering
- Tianjin Key Laboratory of Applied Catalysis Science and Engineering
- School of Chemical Engineering and Technology
- Tianjin University
| | - Song Song
- Collaborative Innovation Center of Chemical Science and Engineering (Tianjin)
- State Key Laboratory of Chemical Engineering
- Tianjin Key Laboratory of Applied Catalysis Science and Engineering
- School of Chemical Engineering and Technology
- Tianjin University
| | - Yating Wang
- Tianjin Key Laboratory of Brine Chemical Engineering and Resource Eco-utilization
- School of Chemical Engineering and Material Science
- Tianjin University of Science & Technology
- Tianjin 300457
- P. R. China
| | - Wenfeng Jin
- Collaborative Innovation Center of Chemical Science and Engineering (Tianjin)
- State Key Laboratory of Chemical Engineering
- Tianjin Key Laboratory of Applied Catalysis Science and Engineering
- School of Chemical Engineering and Technology
- Tianjin University
| | - Tong Ding
- Collaborative Innovation Center of Chemical Science and Engineering (Tianjin)
- State Key Laboratory of Chemical Engineering
- Tianjin Key Laboratory of Applied Catalysis Science and Engineering
- School of Chemical Engineering and Technology
- Tianjin University
| | - Ye Tian
- Collaborative Innovation Center of Chemical Science and Engineering (Tianjin)
- State Key Laboratory of Chemical Engineering
- Tianjin Key Laboratory of Applied Catalysis Science and Engineering
- School of Chemical Engineering and Technology
- Tianjin University
| | - Xingang Li
- Collaborative Innovation Center of Chemical Science and Engineering (Tianjin)
- State Key Laboratory of Chemical Engineering
- Tianjin Key Laboratory of Applied Catalysis Science and Engineering
- School of Chemical Engineering and Technology
- Tianjin University
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17
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Karjule N, Barrio J, Tzadikov J, Shalom M. Electronic Structure Engineering of Carbon Nitride Materials by Using Polycyclic Aromatic Hydrocarbons. Chemistry 2020; 26:6622-6628. [DOI: 10.1002/chem.201905875] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2019] [Revised: 01/29/2020] [Indexed: 12/27/2022]
Affiliation(s)
- Neeta Karjule
- Department of Chemistry and Ilse Katz Institute for Nanoscale Science and TechnologyBen-Gurion University of the Negev Beer-Sheva 8410501 Israel
| | - Jesús Barrio
- Department of Chemistry and Ilse Katz Institute for Nanoscale Science and TechnologyBen-Gurion University of the Negev Beer-Sheva 8410501 Israel
| | - Jonathan Tzadikov
- Department of Chemistry and Ilse Katz Institute for Nanoscale Science and TechnologyBen-Gurion University of the Negev Beer-Sheva 8410501 Israel
| | - Menny Shalom
- Department of Chemistry and Ilse Katz Institute for Nanoscale Science and TechnologyBen-Gurion University of the Negev Beer-Sheva 8410501 Israel
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