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An S, Jeong K, Hassan SZ, Ham G, Kang S, Lee J, Ma H, Kwon J, Jeong SY, Yang J, Woo HY, Cho H, Cha H, Son CY, Chung DS. Hydrophilic Photocrosslinkers as a Universal Solution to Endow Water Affinity to a Polymer Photocatalyst for an Enhanced Hydrogen Evolution Rate. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2024; 11:e2309786. [PMID: 38760898 PMCID: PMC11267343 DOI: 10.1002/advs.202309786] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/13/2023] [Revised: 04/30/2024] [Indexed: 05/20/2024]
Abstract
A universal approach for enhancing water affinity in polymer photocatalysts by covalently attaching hydrophilic photocrosslinkers to polymer chains is presented. A series of bisdiazirine photocrosslinkers, each comprising bisdiazirine photophores linked by various aliphatic (CL-R) or ethylene glycol-based bridge chains (CL-TEG), is designed to prevent crosslinked polymer photocatalysts from degradation through a safe and efficient photocrosslinking reaction at a wavelength of 365 nm. When employing the hydrophilic CL-TEG as a photocrosslinker with polymer photocatalysts (F8BT), the hydrogen evolution reaction (HER) rate is considerably enhanced by 2.5-fold compared to that obtained using non-crosslinked F8BT photocatalysts, whereas CL-R-based photocatalysts yield HER rates comparable to those of non-crosslinked counterparts. Photophysical analyses including time-resolved photoluminescence and transient absorption measurements reveal that adding CL-TEG accelerates exciton separation, forming long-lived charge carriers. Additionally, the in-depth study using molecular dynamics simulations elucidates the dual role of CL-TEG: it enhances water penetration into the polymer matrix and stabilizes charge carriers after exciton generation against undesirable recombination. Therefore, the strategy highlights endowing a high-permittivity environment within polymer photocatalyst in a controlled manner is crucial for enhancing photocatalytic redox reactivity. Furthermore, this study shows that this hydrophilic crosslinker approach has a broad applicability in general polymer semiconductors and their nanoparticulate photocatalysts.
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Affiliation(s)
- Sanghyeok An
- Department of Chemical EngineeringPohang University of Science and Technology (POSTECH)Pohang37673Republic of Korea
| | - Kyeong‐Jun Jeong
- Department of ChemistryPohang University of Science and Technology (POSTECH)Pohang37673Republic of Korea
| | - Syed Zahid Hassan
- Department of Chemical EngineeringPohang University of Science and Technology (POSTECH)Pohang37673Republic of Korea
| | - Gayoung Ham
- Department of Energy Convergence and Climate ChangeKyungpook National UniversityDaegu41566Republic of Korea
| | - Seonghyeon Kang
- Department of ChemistryPohang University of Science and Technology (POSTECH)Pohang37673Republic of Korea
| | - Juhyeok Lee
- Department of Chemical EngineeringPohang University of Science and Technology (POSTECH)Pohang37673Republic of Korea
| | - Hyeonjong Ma
- Department of Energy Science and EngineeringDaegu Gyeongbuk Institute of Science and Technology (DGIST)Daegu42988Republic of Korea
| | - Jieun Kwon
- Department of Chemical EngineeringPohang University of Science and Technology (POSTECH)Pohang37673Republic of Korea
| | - Sang Young Jeong
- Department of ChemistryKorea UniversitySeoul02841Republic of Korea
| | - Jiwoong Yang
- Department of Energy Science and EngineeringDaegu Gyeongbuk Institute of Science and Technology (DGIST)Daegu42988Republic of Korea
| | - Han Young Woo
- Department of ChemistryKorea UniversitySeoul02841Republic of Korea
| | - Han‐Hee Cho
- Department of Materials Science and EngineeringUlsan National Institute of Science and Technology (UNIST)Ulsan44919Republic of Korea
| | - Hyojung Cha
- Department of Energy Convergence and Climate ChangeKyungpook National UniversityDaegu41566Republic of Korea
- Department of Hydrogen & Renewable EnergyKyungpook National UniversityDaegu41566Republic of Korea
| | - Chang Yun Son
- Department of ChemistryPohang University of Science and Technology (POSTECH)Pohang37673Republic of Korea
| | - Dae Sung Chung
- Department of Chemical EngineeringPohang University of Science and Technology (POSTECH)Pohang37673Republic of Korea
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2
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Wang H, Hu L, Xie W, Chang J, Zheng C, Li M, Wang Q, Liao H, Liu D, Wei B. Metastable Liquid Properties and Surface Flow Patterns of Ultrahigh Temperature Alloys Explored in Outer Space. Angew Chem Int Ed Engl 2024; 63:e202400312. [PMID: 38306324 DOI: 10.1002/anie.202400312] [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: 01/05/2024] [Revised: 02/01/2024] [Accepted: 02/02/2024] [Indexed: 02/04/2024]
Abstract
The metastable liquid properties and chemical bonds beyond 2000 K remain a huge challenge for ground-based research on liquid materials chemistry. We show the strong undercooling capability, metastable liquid properties and surface wave patterns of refractory Nb-Si and Zr-V binary alloys explored in space environment. The floating droplet of Nb82.7Si17.3 eutectic alloy superheated up to 2338 K exhibited an extreme undercooling of 437 K, approaching the 0.2TE threshold for homogeneous nucleation of liquid-solid reaction. The microgravity state endowed alloy droplets with nearly perfect sphericity and thus ensured the high accuracy to determine metastable undercooled liquid properties. A special kind of swirling flow was induced for liquid alloy owing to Marangoni convection, which resulted in the spiral microstructures on Zr64V36 alloy surface during liquid-solid phase transition. The coupled impacts of surface nucleation and surface flow brought in a novel olivary shape for these binary alloys. Furthermore, the chemical bonds and atomic structures of high temperature liquids were revealed to understand the liquid properties in outer space circumstances.
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Affiliation(s)
- Haipeng Wang
- Shaanxi Key Laboratory of Space Materials Science and Technology, School of Physical Science and Technology, Northwestern Polytechnical University, Xi'an, 710072, China
| | - Liang Hu
- Shaanxi Key Laboratory of Space Materials Science and Technology, School of Physical Science and Technology, Northwestern Polytechnical University, Xi'an, 710072, China
| | - Wenjun Xie
- Shaanxi Key Laboratory of Space Materials Science and Technology, School of Physical Science and Technology, Northwestern Polytechnical University, Xi'an, 710072, China
| | - Jian Chang
- Shaanxi Key Laboratory of Space Materials Science and Technology, School of Physical Science and Technology, Northwestern Polytechnical University, Xi'an, 710072, China
| | - Chenhui Zheng
- Shaanxi Key Laboratory of Space Materials Science and Technology, School of Physical Science and Technology, Northwestern Polytechnical University, Xi'an, 710072, China
| | - Mingxing Li
- Shaanxi Key Laboratory of Space Materials Science and Technology, School of Physical Science and Technology, Northwestern Polytechnical University, Xi'an, 710072, China
| | - Qing Wang
- Shaanxi Key Laboratory of Space Materials Science and Technology, School of Physical Science and Technology, Northwestern Polytechnical University, Xi'an, 710072, China
| | - Hui Liao
- Shaanxi Key Laboratory of Space Materials Science and Technology, School of Physical Science and Technology, Northwestern Polytechnical University, Xi'an, 710072, China
| | - Dingnan Liu
- Shaanxi Key Laboratory of Space Materials Science and Technology, School of Physical Science and Technology, Northwestern Polytechnical University, Xi'an, 710072, China
| | - Bingbo Wei
- Shaanxi Key Laboratory of Space Materials Science and Technology, School of Physical Science and Technology, Northwestern Polytechnical University, Xi'an, 710072, China
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3
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Qi Y, Zhang F. Recent Advances in Redox-Based Z-Scheme Overall Water Splitting under Visible Light Irradiation. J Phys Chem Lett 2024; 15:2976-2987. [PMID: 38457286 DOI: 10.1021/acs.jpclett.3c03268] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/10/2024]
Abstract
Photocatalytic overall water splitting (OWS) using suspended particulate photocatalysts to produce green hydrogen has inspired continuous interest due to its low cost for easy large-scale application. The two-step photoexcitation system (Z-scheme) mimicking natural photosynthesis was proposed to efficiently use visible light for realization of efficient conversion of solar irradiation. In this Perspective, we will introduce recent advances in redox-based Z-scheme OWS systems, including iodine-based, iron-based, metal complex-based, and other special ion redox couples. The advantages and challenges of each couple and the factors affecting the Z-scheme OWS efficiency are discussed in detail. Finally, the challenges and feasible solutions for the achievement of highly efficient Z-scheme OWS are then outlined. This Perspective provides guidance on how to construct a Z-scheme OWS system and enhance photocatalytic performance.
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Affiliation(s)
- Yu Qi
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian National Laboratory for Clean Energy, Dalian 116023, P. R. China
- School of Chemistry and Chemical Engineering, Liaoning Normal University, Dalian 116029, P. R. China
| | - Fuxiang Zhang
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian National Laboratory for Clean Energy, Dalian 116023, P. R. China
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4
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Lin L, Ma Y, Vequizo JJM, Nakabayashi M, Gu C, Tao X, Yoshida H, Pihosh Y, Nishina Y, Yamakata A, Shibata N, Hisatomi T, Takata T, Domen K. Efficient and stable visible-light-driven Z-scheme overall water splitting using an oxysulfide H 2 evolution photocatalyst. Nat Commun 2024; 15:397. [PMID: 38195692 PMCID: PMC10776739 DOI: 10.1038/s41467-024-44706-4] [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: 08/03/2023] [Accepted: 01/02/2024] [Indexed: 01/11/2024] Open
Abstract
So-called Z-scheme systems permit overall water splitting using narrow-bandgap photocatalysts. To boost the performance of such systems, it is necessary to enhance the intrinsic activities of the hydrogen evolution photocatalyst and oxygen evolution photocatalyst, promote electron transfer from the oxygen evolution photocatalyst to the hydrogen evolution photocatalyst, and suppress back reactions. The present work develop a high-performance oxysulfide photocatalyst, Sm2Ti2O5S2, as an hydrogen evolution photocatalyst for use in a Z-scheme overall water splitting system in combination with BiVO4 as the oxygen evolution photocatalyst and reduced graphene oxide as the solid-state electron mediator. After surface modifications of the photocatalysts to promote charge separation and redox reactions, this system is able to split water into hydrogen and oxygen for more than 100 hours with a solar-to-hydrogen energy conversion efficiency of 0.22%. In contrast to many existing photocatalytic systems, the water splitting activity of the present system is only minimally reduced by increasing the background pressure to 90 kPa. These results suggest characteristics suitable for applications under practical operating conditions.
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Affiliation(s)
- Lihua Lin
- Research Initiative for Supra-Materials, Interdisciplinary Cluster for Cutting Edge Research, Shinshu University, Nagano, Japan
| | - Yiwen Ma
- Research Initiative for Supra-Materials, Interdisciplinary Cluster for Cutting Edge Research, Shinshu University, Nagano, Japan
| | - Junie Jhon M Vequizo
- Research Initiative for Supra-Materials, Interdisciplinary Cluster for Cutting Edge Research, Shinshu University, Nagano, Japan
| | - Mamiko Nakabayashi
- Institute for Engineering Innovation, The University of Tokyo, Bunkyo-ku, Tokyo, Japan
| | - Chen Gu
- Research Initiative for Supra-Materials, Interdisciplinary Cluster for Cutting Edge Research, Shinshu University, Nagano, Japan
| | - Xiaoping Tao
- Research Initiative for Supra-Materials, Interdisciplinary Cluster for Cutting Edge Research, Shinshu University, Nagano, Japan
| | - Hiroaki Yoshida
- Science and Innovation Center, Mitsubishi Chemical Corporation, Aoba-ku, Yokohama-shi, Kanagawa, Japan
- Japan Technological Research Association of Artificial Photosynthetic Chemical Process (ARPChem), Tokyo, Japan
| | - Yuriy Pihosh
- Office of University Professors, The University of Tokyo, Bunkyo-ku, Tokyo, Japan
| | - Yuta Nishina
- Graduate School of Natural Science and Technology, Okayama University, Kita-ku, Okayama, Japan
| | - Akira Yamakata
- Faculty of Natural Science and Technology, Okayama University, Kita-ku, Okayama, Japan
| | - Naoya Shibata
- Institute for Engineering Innovation, The University of Tokyo, Bunkyo-ku, Tokyo, Japan
| | - Takashi Hisatomi
- Research Initiative for Supra-Materials, Interdisciplinary Cluster for Cutting Edge Research, Shinshu University, Nagano, Japan
| | - Tsuyoshi Takata
- Research Initiative for Supra-Materials, Interdisciplinary Cluster for Cutting Edge Research, Shinshu University, Nagano, Japan
| | - Kazunari Domen
- Research Initiative for Supra-Materials, Interdisciplinary Cluster for Cutting Edge Research, Shinshu University, Nagano, Japan.
- Office of University Professors, The University of Tokyo, Bunkyo-ku, Tokyo, Japan.
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5
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Panthi G, Park M. Graphitic Carbon Nitride/Zinc Oxide-Based Z-Scheme and S-Scheme Heterojunction Photocatalysts for the Photodegradation of Organic Pollutants. Int J Mol Sci 2023; 24:15021. [PMID: 37834469 PMCID: PMC10573564 DOI: 10.3390/ijms241915021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2023] [Revised: 10/03/2023] [Accepted: 10/06/2023] [Indexed: 10/15/2023] Open
Abstract
Graphitic carbon nitride (g-C3N4), a metal-free polymer semiconductor, has been recognized as an attractive photocatalytic material for environmental remediation because of its low band gap, high thermal and photostability, chemical inertness, non-toxicity, low cost, biocompatibility, and optical and electrical efficiency. However, g-C3N4 has been reported to suffer from many difficulties in photocatalytic applications, such as a low specific surface area, inadequate visible-light utilization, and a high charge recombination rate. To overcome these difficulties, the formation of g-C3N4 heterojunctions by coupling with metal oxides has triggered tremendous interest in recent years. In this regard, zinc oxide (ZnO) is being largely explored as a self-driven semiconductor photocatalyst to form heterojunctions with g-C3N4, as ZnO possesses unique and fascinating properties, including high quantum efficiency, high electron mobility, cost-effectiveness, environmental friendliness, and a simple synthetic procedure. The synergistic effect of its properties, such as adsorption and photogenerated charge separation, was found to enhance the photocatalytic activity of heterojunctions. Hence, this review aims to compile the strategies for fabricating g-C3N4/ZnO-based Z-scheme and S-scheme heterojunction photocatalytic systems with enhanced performance and overall stability for the photodegradation of organic pollutants. Furthermore, with reference to the reported system, the photocatalytic mechanism of g-C3N4/ZnO-based heterojunction photocatalysts and their charge-transfer pathways on the interface surface are highlighted.
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Affiliation(s)
- Gopal Panthi
- Carbon Composite Energy Nanomaterials Research Center, Woosuk University, Wanju 55338, Republic of Korea
| | - Mira Park
- Carbon Composite Energy Nanomaterials Research Center, Woosuk University, Wanju 55338, Republic of Korea
- Woosuk Institute of Smart Convergence Life Care (WSCLC), Woosuk University, Wanju 55338, Republic of Korea
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6
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Wang B, Wang X, Wang B, Dong CL, Huang YC, Yang M, Liu Y, Zhu Y, Long X, Yang D, Xia Y. Tuning Electronic State and Charge Transport in B←N-Containing 2D Polymer Heterostructures with Efficient Photocatalytic Performance. SMALL METHODS 2023; 7:e2300409. [PMID: 37317015 DOI: 10.1002/smtd.202300409] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/28/2023] [Revised: 05/14/2023] [Indexed: 06/16/2023]
Abstract
Linear-conjugated polymers (LCPs) are excellent semiconductor photocatalysts. However, its inherent amorphous structures and simple electron transport channels restrict efficient photoexcited charge separation and transfer. Herein, "2D conjugated engineering" is employed to design high-crystalline polymer photocatalysts with multichannel charge transport by introducing alkoxyphenyl sidechains. The electronic state structure and electron transport pathways of the LCPs are investigated using experimental and theoretical calculations. Consequently, the 2D B←N-containing polymers (2DPBN) exhibit excellent photoelectric characteristics, which enable the efficient separation of electron-hole and rapidly transfer photogenerated carriers to the catalyst surface for efficient catalytic reactions. Significantly, the further hydrogen evolution of 2DPBN-4F heterostructures can be achieved by increasing the fluorine content of the backbones. This study highlights that the rational design of LCP photocatalysts is an effective strategy to spur further interest in photofunctional polymer material applications.
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Affiliation(s)
- Binbin Wang
- State Key Laboratory of Bio-Fibers and Eco-Textiles, Collaborative Innovation Center of Shandong Marine Biobased Fibers and Ecological Textiles, Institute of Marine Biobased Materials, College of Materials Science and Engineering, Qingdao University, Qingdao, 266071, P. R. China
| | - Xiao Wang
- State Key Laboratory of Marine Coatings, Marine Chemical Research Institute Co., Ltd., Qingdao, 266071, P. R. China
| | - Bingbing Wang
- State Key Laboratory of Bio-Fibers and Eco-Textiles, Collaborative Innovation Center of Shandong Marine Biobased Fibers and Ecological Textiles, Institute of Marine Biobased Materials, College of Materials Science and Engineering, Qingdao University, Qingdao, 266071, P. R. China
| | - Chung-Li Dong
- Department of Physics, Tamkang University, Tamsui, 25137, Taiwan
| | - Yu-Cheng Huang
- Department of Physics, Tamkang University, Tamsui, 25137, Taiwan
| | - Mengfei Yang
- State Key Laboratory of Bio-Fibers and Eco-Textiles, Collaborative Innovation Center of Shandong Marine Biobased Fibers and Ecological Textiles, Institute of Marine Biobased Materials, College of Materials Science and Engineering, Qingdao University, Qingdao, 266071, P. R. China
| | - Yiming Liu
- College of Materials Science and Engineering, Taiyuan University of Technology, Taiyuan, 030024, P. R. China
| | - Yukun Zhu
- School of Environmental Science and Engineering, Qingdao University, Qingdao, 266071, P. R. China
| | - Xiaojing Long
- State Key Laboratory of Bio-Fibers and Eco-Textiles, Collaborative Innovation Center of Shandong Marine Biobased Fibers and Ecological Textiles, Institute of Marine Biobased Materials, College of Materials Science and Engineering, Qingdao University, Qingdao, 266071, P. R. China
| | - Dongjiang Yang
- School of Environmental Science and Engineering, Qingdao University, Qingdao, 266071, P. R. China
| | - Yanzhi Xia
- State Key Laboratory of Bio-Fibers and Eco-Textiles, Collaborative Innovation Center of Shandong Marine Biobased Fibers and Ecological Textiles, Institute of Marine Biobased Materials, College of Materials Science and Engineering, Qingdao University, Qingdao, 266071, P. R. China
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7
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Zhang Q, Chen J, Che H, Liu B, Ao Y. n→π* Electron Transitions and Directional Charge Migration Synergistically Promoting O 2 Activation and Holes Utilization on Carbon Nitride for Efficiently Photocatalytic Degradation of Organic Contaminants. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2023; 19:e2302510. [PMID: 37323095 DOI: 10.1002/smll.202302510] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/24/2023] [Revised: 05/28/2023] [Indexed: 06/17/2023]
Abstract
Stimulating electron transitions and promoting exciton dissociation are crucial for improving the photocatalytic performance of polymeric carbon nitride (CN) yet still challenging. Herein, a novel CN with C dopant and asymmetric structure (CC-UCN2 ) is ingeniously synthesized. The obtained CC-UCN2 not only reinforces the intrinsic π→π* electron transitions, but also successfully awakens additional n→π* electron transitions. Besides, charge centers dislocation caused by symmetry breaking induces a spontaneous polarized electric field, effectively breaking the constraints of Coulomb electrostatic interaction between electrons and holes and driving their directional migration. Along with the spatial separation of reduction and oxidation sites, CC-UCN2 shows exceptional O2 activation and holes oxidation efficiency, thus exhibits a high degradation rate constant (0.201 min-1 ) and mineralization rate (80.1%) for bisphenol A (BPA)(far outperforming pristine and other modified CNs). This work proposes a novel perspective for developing high-efficiency photocatalysts and comprehending the underlying mechanism of O2 activation and holes oxidation for pollutant degradation.
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Affiliation(s)
- Qiang Zhang
- Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes, Ministry of Education, College of Environment, Hohai University, No.1, Xikang road, Nanjing, 210098, China
| | - Juan Chen
- Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes, Ministry of Education, College of Environment, Hohai University, No.1, Xikang road, Nanjing, 210098, China
| | - Huinan Che
- Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes, Ministry of Education, College of Environment, Hohai University, No.1, Xikang road, Nanjing, 210098, China
| | - Bin Liu
- Department of Materials Science and Engineering, City University of Hong Kong, Hong Kong SAR, 999077, China
| | - Yanhui Ao
- Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes, Ministry of Education, College of Environment, Hohai University, No.1, Xikang road, Nanjing, 210098, China
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8
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Yazaki D, Kawawaki T, Hirayama D, Kawachi M, Kato K, Oguchi S, Yamaguchi Y, Kikkawa S, Ueki Y, Hossain S, Osborn DJ, Ozaki F, Tanaka S, Yoshinobu J, Metha GF, Yamazoe S, Kudo A, Yamakata A, Negishi Y. Carbon Nitride Loaded with an Ultrafine, Monodisperse, Metallic Platinum-Cluster Cocatalyst for the Photocatalytic Hydrogen-Evolution Reaction. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2023; 19:e2208287. [PMID: 37093189 DOI: 10.1002/smll.202208287] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/02/2023] [Revised: 03/26/2023] [Indexed: 05/03/2023]
Abstract
For the realization of a next-generation energy society, further improvement in the activity of water-splitting photocatalysts is essential. Platinum (Pt) is predicted to be the most effective cocatalyst for hydrogen evolution from water. However, when the number of active sites is increased by decreasing the particle size, the Pt cocatalyst is easily oxidized and thereby loses its activity. In this study, a method to load ultrafine, monodisperse, metallic Pt nanoclusters (NCs) on graphitic carbon nitride is developed, which is a promising visible-light-driven photocatalyst. In this photocatalyst, a part of the surface of the Pt NCs is protected by sulfur atoms, preventing oxidation. Consequently, the hydrogen-evolution activity per loading weight of Pt cocatalyst is significantly improved, 53 times, compared with that of a Pt-cocatalyst loaded photocatalyst by the conventional method. The developed method is also effective to enhance the overall water-splitting activity of other advanced photocatalysts such as SrTiO3 and BaLa4 Ti4 O15 .
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Affiliation(s)
- Daichi Yazaki
- Department of Applied Chemistry, Faculty of Science, Tokyo University of Science, 1-3 Kagurazaka, Shinjuku-ku, Tokyo, 162-8601, Japan
| | - Tokuhisa Kawawaki
- Department of Applied Chemistry, Faculty of Science, Tokyo University of Science, 1-3 Kagurazaka, Shinjuku-ku, Tokyo, 162-8601, Japan
- Research Institute for Science & Technology, Tokyo University of Science, 2641 Yamazaki, Noda, Chiba, 278-8510, Japan
| | - Daisuke Hirayama
- Department of Applied Chemistry, Faculty of Science, Tokyo University of Science, 1-3 Kagurazaka, Shinjuku-ku, Tokyo, 162-8601, Japan
| | - Masanobu Kawachi
- Department of Applied Chemistry, Faculty of Science, Tokyo University of Science, 1-3 Kagurazaka, Shinjuku-ku, Tokyo, 162-8601, Japan
| | - Kosaku Kato
- Graduate School of Natural Science and Technology, Okayama University, 3-1-1 Tsushimanaka, Kita-ku, Okayama, 700-8530, Japan
| | - Sota Oguchi
- Department of Applied Chemistry, Faculty of Science, Tokyo University of Science, 1-3 Kagurazaka, Shinjuku-ku, Tokyo, 162-8601, Japan
| | - Yuichi Yamaguchi
- Department of Applied Chemistry, Faculty of Science, Tokyo University of Science, 1-3 Kagurazaka, Shinjuku-ku, Tokyo, 162-8601, Japan
- Research Institute for Science & Technology, Tokyo University of Science, 2641 Yamazaki, Noda, Chiba, 278-8510, Japan
| | - Soichi Kikkawa
- Department of Chemistry, Graduate School of Science, Tokyo Metropolitan University, 1-1 Minami-Osawa, Hachioji-shi, Tokyo, 192-0397, Japan
| | - Yoshiya Ueki
- Department of Applied Chemistry, Faculty of Science, Tokyo University of Science, 1-3 Kagurazaka, Shinjuku-ku, Tokyo, 162-8601, Japan
| | - Sakiat Hossain
- Research Institute for Science & Technology, Tokyo University of Science, 2641 Yamazaki, Noda, Chiba, 278-8510, Japan
| | - D J Osborn
- Department of Chemistry, University of Adelaide, Adelaide, South Australia, 5005, Australia
| | - Fumihiko Ozaki
- The Institute for Solid State Physics, The University of Tokyo, 5-1-5, Kashiwanoha, Kashiwa, Chiba, 277-8581, Japan
| | - Shunsuke Tanaka
- The Institute for Solid State Physics, The University of Tokyo, 5-1-5, Kashiwanoha, Kashiwa, Chiba, 277-8581, Japan
| | - Jun Yoshinobu
- The Institute for Solid State Physics, The University of Tokyo, 5-1-5, Kashiwanoha, Kashiwa, Chiba, 277-8581, Japan
| | - Gregory F Metha
- Department of Chemistry, University of Adelaide, Adelaide, South Australia, 5005, Australia
| | - Seiji Yamazoe
- Department of Chemistry, Graduate School of Science, Tokyo Metropolitan University, 1-1 Minami-Osawa, Hachioji-shi, Tokyo, 192-0397, Japan
| | - Akihiko Kudo
- Department of Applied Chemistry, Faculty of Science, Tokyo University of Science, 1-3 Kagurazaka, Shinjuku-ku, Tokyo, 162-8601, Japan
- Research Institute for Science & Technology, Tokyo University of Science, 2641 Yamazaki, Noda, Chiba, 278-8510, Japan
| | - Akira Yamakata
- Graduate School of Natural Science and Technology, Okayama University, 3-1-1 Tsushimanaka, Kita-ku, Okayama, 700-8530, Japan
| | - Yuichi Negishi
- Department of Applied Chemistry, Faculty of Science, Tokyo University of Science, 1-3 Kagurazaka, Shinjuku-ku, Tokyo, 162-8601, Japan
- Research Institute for Science & Technology, Tokyo University of Science, 2641 Yamazaki, Noda, Chiba, 278-8510, Japan
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9
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Thangamuthu M, Vankayala K, Xiong L, Conroy S, Zhang X, Tang J. Tungsten Oxide-Based Z-Scheme for Visible Light-Driven Hydrogen Production from Water Splitting. ACS Catal 2023; 13:9113-9124. [PMID: 37441235 PMCID: PMC10334426 DOI: 10.1021/acscatal.3c01312] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2023] [Revised: 06/09/2023] [Indexed: 07/15/2023]
Abstract
The stoichiometric water splitting using a solar-driven Z-scheme approach is an emerging field of interest to address the increasing renewable energy demand and environmental concerns. So far, the reported Z-scheme must comprise two populations of photocatalysts. In the present work, only tungsten oxides are used to construct a robust Z-scheme system for complete visible-driven water splitting in both neutral and alkaline solutions, where sodium tungsten oxide bronze (Na0.56WO3-x) is used as a H2 evolution photocatalyst and two-dimensional (2D) tungsten trioxide (WO3) nanosheets as an O2 evolution photocatalyst. This system efficiently produces H2 (14 μmol h-1) and O2 (6.9 μmol h-1) at an ideal molar ratio of 2:1 in an aqueous solution driven by light, resulting in a remarkably high apparent quantum yield of 6.06% at 420 nm under neutral conditions. This exceptional selective H2 and O2 production is due to the preferential adsorption of iodide (I-) on Na0.56WO3-x and iodate (IO3-) on WO3, which is evidenced by both experiments and density functional theory calculation. The present liquid Z-scheme in the presence of efficient shuttle molecules promises a separated H2 and O2 evolution by applying a dual-bed particle suspension system, thus a safe photochemical process.
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Affiliation(s)
- Madasamy Thangamuthu
- Department
of Chemical Engineering, University College
London, Torrington Place, London WC1E 7JE, U.K.
| | - Kiran Vankayala
- Department
of Chemical Engineering, University College
London, Torrington Place, London WC1E 7JE, U.K.
| | - Lunqiao Xiong
- Department
of Chemical Engineering, University College
London, Torrington Place, London WC1E 7JE, U.K.
| | - Stuart Conroy
- Department
of Chemical and Process Engineering, University
of Strathclyde, Glasgow G1 1XL, U.K.
| | - Xiaolei Zhang
- Department
of Chemical and Process Engineering, University
of Strathclyde, Glasgow G1 1XL, U.K.
| | - Junwang Tang
- Department
of Chemical Engineering, University College
London, Torrington Place, London WC1E 7JE, U.K.
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10
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Khan I, Khan S, Wu SY, Chen HT, Zada A, Linlin L, Ismail A, Ali S, Raziq F, Haider M, Khan J, Ullah S, Ju SP, Wang S. Synergistic Functionality of Dopants and Defects in Co-Phthalocyanine/B-CN Z-Scheme Photocatalysts for Promoting Photocatalytic CO 2 Reduction Reactions. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2023:e2208179. [PMID: 36935369 DOI: 10.1002/smll.202208179] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/27/2022] [Revised: 02/15/2023] [Indexed: 06/18/2023]
Abstract
The realization of solar-light-driven CO2 reduction reactions (CO2 RR) is essential for the commercial development of renewable energy modules and the reduction of global CO2 emissions. Combining experimental measurements and theoretical calculations, to introduce boron dopants and nitrogen defects in graphitic carbon nitride (g-C3 N4 ), sodium borohydride is simply calcined with the mixture of g-C3 N4 (CN), followed by the introduction of ultrathin Co phthalocyanine through phosphate groups. By strengthening H-bonding interactions, the resultant CoPc/P-BNDCN nanocomposite showed excellent photocatalytic CO2 reduction activity, releasing 197.76 and 130.32 µmol h-1 g-1 CO and CH4 , respectively, and conveying an unprecedented 10-26-time improvement under visible-light irradiation. The substantial tuning is performed towards the conduction and valance band locations by B-dopants and N-defects to modulate the band structure for significantly accelerated CO2 RR. Through the use of ultrathin metal phthalocyanine assemblies that have a lot of single-atom sites, this work demonstrates a sustainable approach for achieving effective photocatalytic CO2 activation. More importantly, the excellent photoactivity is attributed to the fast charge separation via Z-scheme transfer mechanism formed by the universally facile strategy of dimension-matched ultrathin (≈4 nm) metal phthalocyanine-assisted nanocomposites.
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Affiliation(s)
- Imran Khan
- School of Physics and Electronics, Central South University, Changsha, 410083, P. R. China
| | - Salman Khan
- Key Laboratory of Functional Inorganic Material Chemistry, The Ministry of Education of the Peoples Republic of China, Heilongjiang University, Harbin, 150080, P. R. China
| | - Shiuan-Yau Wu
- Department of Chemistry, R&D Center for Membrane Technology, and Research Center for Semiconductor Materials and Advanced Optics, Chung Yuan Christian University, Chungli District, Taoyuan City, 320314, Taiwan
| | - Hsin-Tsung Chen
- Department of Chemistry, R&D Center for Membrane Technology, and Research Center for Semiconductor Materials and Advanced Optics, Chung Yuan Christian University, Chungli District, Taoyuan City, 320314, Taiwan
| | - Amir Zada
- Department of Chemistry, Abdul Wali Khan University, Khyber Pakhtunkhwa, Mardan, 23200, Pakistan
| | - Liu Linlin
- School of Physics and Electronics, Central South University, Changsha, 410083, P. R. China
| | - Ahmed Ismail
- Key Laboratory of Functional Inorganic Material Chemistry, The Ministry of Education of the Peoples Republic of China, Heilongjiang University, Harbin, 150080, P. R. China
| | - Sharafat Ali
- School of Physics, University of Electronic Science and Technology of China, Chengdu, 610054, P. R. China
| | - Fazal Raziq
- School of Physics, University of Electronic Science and Technology of China, Chengdu, 610054, P. R. China
| | - Mustafa Haider
- School of Physics and Electronics, Central South University, Changsha, 410083, P. R. China
| | - Javid Khan
- College of Materials Science and Engineering, Hunan University, Changsha, 410082, P. R. China
| | - Sami Ullah
- K.A.CARE Energy Research & Innovation Center (ERIC), King Fahd University of Petroleum & Minerals (KFUPM), Dhahran, 31261, Saudi Arabia
| | - Shin-Pon Ju
- Department of Mechanical and Electro-Mechanical Engineering, National Sun-Yat-Sen University, 70 Lienhai Rd, Kaohsiung, 804, Taiwan
| | - Shiliang Wang
- School of Physics and Electronics, Central South University, Changsha, 410083, P. R. China
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11
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Xing F, Wang C, Liu S, Jin S, Jin H, Li J. Interfacial Chemical Bond Engineering in a Direct Z-Scheme g-C 3N 4/MoS 2 Heterojunction. ACS APPLIED MATERIALS & INTERFACES 2023; 15:11731-11740. [PMID: 36821726 DOI: 10.1021/acsami.2c21046] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
The Z-scheme heterojunction shows great potential in photocatalysis due to its superior carrier separation efficiency and strong photoredox properties. However, how to regulate the charge separation at the nanometric interface of heterostructures still remains a challenge. Here, we take g-C3N4 and MoS2 as models and design the Mo-N chemical bond, which connects exactly the CB of MoS2 and VB of g-C3N4. Thus, the Mo-N bond could act as an atomic-level interfacial "bridge" that provides a direct migration path of charge carriers between g-C3N4 and MoS2. Experiments confirmed that the Mo-N bond and the internal electric field promote greatly the photogenerated carrier separation. The optimized photocatalyst exhibits a high hydrogen evolution rate that is about 19.6 times that of the pristine bulk C3N4. This study demonstrates the key role of an atomic-level interfacial chemical bond design in heterojunctions and provides a new idea for the design of efficient catalytic heterojunctions.
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Affiliation(s)
- Fangyuan Xing
- Beijing Key Laboratory of Construction Tailorable Advanced Functional Materials and Green Applications, School of Materials Science and Engineering, Beijing Institute of Technology, Beijing 100081, China
| | - Chengzhi Wang
- Beijing Key Laboratory of Construction Tailorable Advanced Functional Materials and Green Applications, School of Materials Science and Engineering, Beijing Institute of Technology, Beijing 100081, China
| | - Shiqiao Liu
- Beijing Key Laboratory of Construction Tailorable Advanced Functional Materials and Green Applications, School of Materials Science and Engineering, Beijing Institute of Technology, Beijing 100081, China
| | - Shaohua Jin
- Beijing Key Laboratory of Construction Tailorable Advanced Functional Materials and Green Applications, School of Materials Science and Engineering, Beijing Institute of Technology, Beijing 100081, China
| | - Haibo Jin
- Beijing Key Laboratory of Construction Tailorable Advanced Functional Materials and Green Applications, School of Materials Science and Engineering, Beijing Institute of Technology, Beijing 100081, China
| | - Jingbo Li
- Beijing Key Laboratory of Construction Tailorable Advanced Functional Materials and Green Applications, School of Materials Science and Engineering, Beijing Institute of Technology, Beijing 100081, China
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12
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Ruan Q, Xi X, Yan B, Kong L, Jiang C, Tang J, Sun Z. Stored photoelectrons in a faradaic junction for decoupled solar hydrogen production in the dark. Chem 2023. [DOI: 10.1016/j.chempr.2023.03.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/31/2023]
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13
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Ma Y, Lin L, Takata T, Hisatomi T, Domen K. A perspective on two pathways of photocatalytic water splitting and their practical application systems. Phys Chem Chem Phys 2023; 25:6586-6601. [PMID: 36789746 DOI: 10.1039/d2cp05427b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
Photocatalytic water splitting has been widely studied as a means of converting solar energy into hydrogen as an ideal energy carrier in the future. Systems for photocatalytic water splitting can be divided into one-step excitation and two-step excitation processes. The former uses a single photocatalyst while the latter uses a pair of photocatalysts to separately generate hydrogen and oxygen. Significant progress has been made in each type of photocatalytic water splitting system in recent years, although improving the solar-to-hydrogen energy conversion efficiency and constructing practical technologies remain important tasks. This perspective summarizes recent advances in the field of photocatalytic overall water splitting, with a focus on the design of photocatalysts, co-catalysts and reaction systems. The associated challenges and potential approaches to practical solar hydrogen production via photocatalytic water splitting are also presented.
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Affiliation(s)
- Yiwen Ma
- Research Initiative for Supra-Materials, Interdisciplinary Cluster for Cutting Edge Research, Shinshu University, Nagano 380-8553, Japan.
| | - Lihua Lin
- Research Initiative for Supra-Materials, Interdisciplinary Cluster for Cutting Edge Research, Shinshu University, Nagano 380-8553, Japan.
| | - Tsuyoshi Takata
- Research Initiative for Supra-Materials, Interdisciplinary Cluster for Cutting Edge Research, Shinshu University, Nagano 380-8553, Japan.
| | - Takashi Hisatomi
- Research Initiative for Supra-Materials, Interdisciplinary Cluster for Cutting Edge Research, Shinshu University, Nagano 380-8553, Japan.
| | - Kazunari Domen
- Research Initiative for Supra-Materials, Interdisciplinary Cluster for Cutting Edge Research, Shinshu University, Nagano 380-8553, Japan. .,Office of University Professors, The University of Tokyo, Tokyo 113-86556, Japan
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14
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Kolarikova M, Hosikova B, Dilenko H, Barton-Tomankova K, Valkova L, Bajgar R, Malina L, Kolarova H. Photodynamic therapy: Innovative approaches for antibacterial and anticancer treatments. Med Res Rev 2023. [PMID: 36757198 DOI: 10.1002/med.21935] [Citation(s) in RCA: 52] [Impact Index Per Article: 52.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2022] [Revised: 12/07/2022] [Accepted: 01/03/2023] [Indexed: 02/10/2023]
Abstract
Photodynamic therapy is an alternative treatment mainly for cancer but also for bacterial infections. This treatment dates back to 1900 when a German medical school graduate Oscar Raab found a photodynamic effect while doing research for his doctoral dissertation with Professor Hermann von Tappeiner. Unexpectedly, Raab revealed that the toxicity of acridine on paramecium depends on the intensity of light in his laboratory. Photodynamic therapy is therefore based on the administration of a photosensitizer with subsequent light irradiation within the absorption maxima of this substance followed by reactive oxygen species formation and finally cell death. Although this treatment is not a novelty, there is an endeavor for various modifications to the therapy. For example, selectivity and efficiency of the photosensitizer, as well as irradiation with various types of light sources are still being modified to improve final results of the photodynamic therapy. The main aim of this review is to summarize anticancer and antibacterial modifications, namely various compounds, approaches, and techniques, to enhance the effectiveness of photodynamic therapy.
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Affiliation(s)
- Marketa Kolarikova
- Department of Biophysics, Faculty of Medicine and Dentistry, Palacky University, Olomouc, Czech Republic
| | - Barbora Hosikova
- Department of Biophysics, Faculty of Medicine and Dentistry, Palacky University, Olomouc, Czech Republic
| | - Hanna Dilenko
- Department of Biophysics, Faculty of Medicine and Dentistry, Palacky University, Olomouc, Czech Republic
| | - Katerina Barton-Tomankova
- Department of Biophysics, Faculty of Medicine and Dentistry, Palacky University, Olomouc, Czech Republic
| | - Lucie Valkova
- Department of Biophysics, Faculty of Medicine and Dentistry, Palacky University, Olomouc, Czech Republic
| | - Robert Bajgar
- Department of Biophysics, Faculty of Medicine and Dentistry, Palacky University, Olomouc, Czech Republic
| | - Lukas Malina
- Department of Biophysics, Faculty of Medicine and Dentistry, Palacky University, Olomouc, Czech Republic
| | - Hana Kolarova
- Department of Biophysics, Faculty of Medicine and Dentistry, Palacky University, Olomouc, Czech Republic
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15
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Yang Y, Chu X, Zhang HY, Zhang R, Liu YH, Zhang FM, Lu M, Yang ZD, Lan YQ. Engineering β-ketoamine covalent organic frameworks for photocatalytic overall water splitting. Nat Commun 2023; 14:593. [PMID: 36737616 PMCID: PMC9898260 DOI: 10.1038/s41467-023-36338-x] [Citation(s) in RCA: 32] [Impact Index Per Article: 32.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2022] [Accepted: 01/26/2023] [Indexed: 02/05/2023] Open
Abstract
Covalent organic frameworks (COFs) are an emerging type of crystalline and porous photocatalysts for hydrogen evolution, however, the overall water splitting activity of COFs is rarely known. In this work, we firstly realized overall water splitting activity of β-ketoamine COFs by systematically engineering N-sites, architecture, and morphology. By in situ incorporating sub-nanometer platinum (Pt) nanoparticles co-catalyst into the pores of COFs nanosheets, both Pt@TpBpy-NS and Pt@TpBpy-2-NS show visible-light-driven overall water splitting activity, with the optimal H2 and O2 evolution activities of 9.9 and 4.8 μmol in 5 h for Pt@TpBpy-NS, respectively, and a maximum solar-to-hydrogen efficiency of 0.23%. The crucial factors affecting the activity including N-sites position, nano morphology, and co-catalyst distribution were systematically explored. Further mechanism investigation reveals the tiny diversity of N sites in COFs that induces great differences in electron transfer as well as reaction potential barriers.
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Affiliation(s)
- Yan Yang
- Heilongjiang Provincial Key Laboratory of CO2 Resource Utilization and Energy Catalytic Materials, School of Material Science and Chemical Engineering, Harbin University of Science and Technology, Harbin, Heilongjiang, 150080, People's Republic of China
| | - Xiaoyu Chu
- Heilongjiang Provincial Key Laboratory of CO2 Resource Utilization and Energy Catalytic Materials, School of Material Science and Chemical Engineering, Harbin University of Science and Technology, Harbin, Heilongjiang, 150080, People's Republic of China
| | - Hong-Yu Zhang
- Heilongjiang Provincial Key Laboratory of CO2 Resource Utilization and Energy Catalytic Materials, School of Material Science and Chemical Engineering, Harbin University of Science and Technology, Harbin, Heilongjiang, 150080, People's Republic of China
| | - Rui Zhang
- Heilongjiang Provincial Key Laboratory of CO2 Resource Utilization and Energy Catalytic Materials, School of Material Science and Chemical Engineering, Harbin University of Science and Technology, Harbin, Heilongjiang, 150080, People's Republic of China
| | - Yu-Han Liu
- Heilongjiang Provincial Key Laboratory of CO2 Resource Utilization and Energy Catalytic Materials, School of Material Science and Chemical Engineering, Harbin University of Science and Technology, Harbin, Heilongjiang, 150080, People's Republic of China
| | - Feng-Ming Zhang
- Heilongjiang Provincial Key Laboratory of CO2 Resource Utilization and Energy Catalytic Materials, School of Material Science and Chemical Engineering, Harbin University of Science and Technology, Harbin, Heilongjiang, 150080, People's Republic of China.
| | - Meng Lu
- School of Chemistry, South China Normal University, Guangzhou, Guangdong, 510006, People's Republic of China
| | - Zhao-Di Yang
- Heilongjiang Provincial Key Laboratory of CO2 Resource Utilization and Energy Catalytic Materials, School of Material Science and Chemical Engineering, Harbin University of Science and Technology, Harbin, Heilongjiang, 150080, People's Republic of China.
| | - Ya-Qian Lan
- School of Chemistry, South China Normal University, Guangzhou, Guangdong, 510006, People's Republic of China.
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16
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A 1,3,5-triazine and benzodithiophene based donor-acceptor type semiconducting conjugated polymer for photocatalytic overall water splitting. J SOLID STATE CHEM 2022. [DOI: 10.1016/j.jssc.2022.123769] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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17
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Preparation of C3N4 Thin Films for Photo-/Electrocatalytic CO2 Reduction to Produce Liquid Hydrocarbons. Catalysts 2022. [DOI: 10.3390/catal12111399] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Thermal vapor condensation of melamine at various temperatures was used to fabricate thin graphitic carbon nitride (g-C3N4) films on fluorine-doped tin oxide (FTO) coated glass substrates. Photoanodic (n-type) and photocathodic (p-type) responses were observed simultaneously in the g-C3N4 films. The g-C3N4 film formed at 520 °C with the longest average lifetime of the photo-excited electrons shows the best cathodic photocurrent performance, which was then chosen for electrochemical and photoelectrochemical reduction of CO2. When the basic electrolyte (CO2-saturated 0.5 M KHCO3, pH = 7.6) was adopted, CO2 was electrochemically converted into formaldehyde ((54.6 μM/h)) in the liquid product. When the acidic electrolyte (CO2-saturated 0.5 M KCl, pH = 4.1) was adopted, formaldehyde (39.5 μM/h) and ethanol (15.7 μM/h) were generated through photoelectrochemical reduction, stimulated by the presence of sufficient protons from the electrolyte in the reduction process. Therefore, the pure g-C3N4 film has a great potential for CO2 reduction to value-added liquid hydrocarbons products via electrochemical or photoelectrochemical ways.
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18
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Dai Y, Niu Z, Luo W, Wang Y, Mu P, Li J. A review on the recent advances in composite membranes for CO2 capture processes. Sep Purif Technol 2022. [DOI: 10.1016/j.seppur.2022.122752] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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19
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Hillman SAJ, Sprick RS, Pearce D, Woods DJ, Sit WY, Shi X, Cooper AI, Durrant JR, Nelson J. Why Do Sulfone-Containing Polymer Photocatalysts Work So Well for Sacrificial Hydrogen Evolution from Water? J Am Chem Soc 2022; 144:19382-19395. [PMID: 36251010 PMCID: PMC9619400 DOI: 10.1021/jacs.2c07103] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
![]()
Many of the highest-performing
polymer photocatalysts
for sacrificial
hydrogen evolution from water have contained dibenzo[b,d]thiophene sulfone units in their polymer backbones.
However, the reasons behind the dominance of this building block are
not well understood. We study films, dispersions, and solutions of
a new set of solution-processable materials, where the sulfone content
is systematically controlled, to understand how the sulfone unit affects
the three key processes involved in photocatalytic hydrogen generation
in this system: light absorption; transfer of the photogenerated hole
to the hole scavenger triethylamine (TEA); and transfer of the photogenerated
electron to the palladium metal co-catalyst that remains in the polymer
from synthesis. Transient absorption spectroscopy and electrochemical
measurements, combined with molecular dynamics and density functional
theory simulations, show that the sulfone unit has two primary effects.
On the picosecond timescale, it dictates the thermodynamics of hole
transfer out of the polymer. The sulfone unit attracts water molecules
such that the average permittivity experienced by the solvated polymer
is increased. We show that TEA oxidation is only thermodynamically
favorable above a certain permittivity threshold. On the microsecond
timescale, we present experimental evidence that the sulfone unit
acts as the electron transfer site out of the polymer, with the kinetics
of electron extraction to palladium dictated by the ratio of photogenerated
electrons to the number of sulfone units. For the highest-performing,
sulfone-rich material, hydrogen evolution seems to be limited by the
photogeneration rate of electrons rather than their extraction from
the polymer.
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Affiliation(s)
- Sam A J Hillman
- Department of Physics, Centre for Processable Electronics, Imperial College London, South Kensington Campus, London SW7 2AZ, U.K.,Department of Chemistry, Centre for Processable Electronics, Imperial College London, 80 Wood Lane, London W12 0BZ, U.K
| | - Reiner Sebastian Sprick
- Department of Pure and Applied Chemistry, University of Strathclyde, Thomas Graham Building, 295 Cathedral Street, Glasgow G1 1XL, U.K.,Department of Chemistry and Material Innovation Factory, University of Liverpool, Crown Street, Liverpool L69 7ZD, U.K
| | - Drew Pearce
- Department of Physics, Centre for Processable Electronics, Imperial College London, South Kensington Campus, London SW7 2AZ, U.K
| | - Duncan J Woods
- Department of Chemistry and Material Innovation Factory, University of Liverpool, Crown Street, Liverpool L69 7ZD, U.K
| | - Wai-Yu Sit
- Department of Physics, Centre for Processable Electronics, Imperial College London, South Kensington Campus, London SW7 2AZ, U.K
| | - Xingyuan Shi
- Department of Physics, Centre for Processable Electronics, Imperial College London, South Kensington Campus, London SW7 2AZ, U.K
| | - Andrew I Cooper
- Department of Chemistry and Material Innovation Factory, University of Liverpool, Crown Street, Liverpool L69 7ZD, U.K
| | - James R Durrant
- Department of Chemistry, Centre for Processable Electronics, Imperial College London, 80 Wood Lane, London W12 0BZ, U.K
| | - Jenny Nelson
- Department of Physics, Centre for Processable Electronics, Imperial College London, South Kensington Campus, London SW7 2AZ, U.K
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20
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Visible-light-driven nonsacrificial hydrogen evolution by modified carbon nitride photocatalysts. CHINESE JOURNAL OF CATALYSIS 2022. [DOI: 10.1016/s1872-2067(21)64015-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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21
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Mir S, Naderifar A, Rahidi A, Alaei M. Developing a facile graphitic carbon nitride (g-C 3N 4)-coated stainless steel mesh with different superhydrophilic/underwater superoleophobic and superoleophilic behavior for oil-water separation. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:66888-66901. [PMID: 35513622 DOI: 10.1007/s11356-022-20560-z] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/18/2022] [Accepted: 04/27/2022] [Indexed: 06/14/2023]
Abstract
There is an increasing demand for the development of inexpensive and effective approaches for the oil-water separation due to the global concern in oil industries. The present study was conducted to fabricate graphitic carbon nitride/thermoplastic polyurethane (g-C3N4/TPU)-coated stainless steel meshes via the dip-coating method to investigate the capability of g-C3N4 nanosheets (CN-NS) in oil-water separation. CN-NS was synthesized using the polycondensation process followed by exfoliation with Hummer's method. We studied the effect of TPU and CN-NS concentration on wettability behavior to obtain an optimized coating solution. CN-NS-coated mesh showed superoleophilic/hydrophobic behavior at CN-NS:TPU ratio of 50:50, and it efficiently passed oil from the emulsified water-in-oil mixture (with 50 wt.% oil) with the efficiency of 99%. The wettability behavior of superhydrophilic/underwater superoleophobic was also obtained at CN-NS:TPU ratio of 80:20, and it was able to separate water from the emulsified water-in-oil mixture with the efficiency of 79% under gravity. Both filters were able to separate free water and oil mixtures with flux and efficiency of 6114 L.m-2.h-1 and ~ 99.99%, respectively. The mechanism of wettability behavior of the coating is mainly related to the functional groups on the edge of g-C3N4-NS, thus increasing the hydrophilic properties of the surface. In addition, the micro-nano hierarchical structure of the surface coating improves its roughness due to the presence of CN-NS, which is effectively embedded into the hydrophilic TPU. More importantly, commercially available TPU chemical and simple fabrication of g-C3N4 from an inexpensive precursor make the method reported herein as a significant alternative for large-scale application.
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Affiliation(s)
- Sonia Mir
- Department of Chemical Engineering, Amirkabir University of Technology (Tehran Polytechnic), Tehran, Iran
| | - Abbas Naderifar
- Department of Chemical Engineering, Amirkabir University of Technology (Tehran Polytechnic), Tehran, Iran
| | - Alimorad Rahidi
- Nanotechnology Research Center, Research Institute of Petroleum Industry, Tehran, Iran.
| | - Mahshad Alaei
- Catalyst Division, Research Institute of Petroleum Industry, Tehran, Iran
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22
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Smrithi SP, Kottam N, Narula A, Madhu GM, Mohammed R, Agilan R. Carbon dots decorated cadmium sulphide heterojunction-nanospheres for the enhanced visible light driven photocatalytic dye degradation and hydrogen generation. J Colloid Interface Sci 2022; 627:956-968. [PMID: 35901574 DOI: 10.1016/j.jcis.2022.07.100] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2022] [Revised: 07/13/2022] [Accepted: 07/17/2022] [Indexed: 01/14/2023]
Abstract
Carbon dots (C-dots) developed from beetroot is used for the rational design of cadmium sulphide based heterojunction photocatalysts (C-dots@CdS) using hydrothermal technique. The crystal structure, phase, morphology and optical characteristics of the synthesised materials are determined using X-ray diffraction (XRD), High resolution transmission electron microscopy (HR-TEM), Field emission scanning electron microscopy (FESEM), Energy dispersive X-ray analysis (EDAX), Fourier transform infrared spectroscopy (FTIR), Raman spectroscopy, UV-Visible diffuse reflectance spectroscopy (UV-DRS), photoluminescence spectroscopy (PL spectroscopy), BET adsorption, X-ray photoelectron spectroscopy (XPS) and electrochemical studies. Using C-dots@CdS catalytic system, a superior photocatalytic activity relative to the undecorated CdS is observed. Among the C-dots@CdS samples, the CdS loaded with 6 wt% of C-dots exhibited enhanced hydrogen evolution rate compared with other samples considered for the study. CdS nanospheres modified with C-dots (6 wt%) resulted in the photocatalytic hydrogen evolution rate of 1582 µmolg-1 against 849 µmolg-1 evolution rate obtained for CdS nanospheres within 3 h. In spite of being 0D/0D type nano-heteroarchitecture, C-dots@CdS system obtained an apparent quantum yield of 6.37 % for the catalytic dosage of 20 mg under the irradiation of visible light. CdS in the C-dots@CdS system serves as the light harvester while C-dots with discernible edges can maintain the continuous supply of photo-excited charge carriers and hence can reduce the charge-carrier recombination. Further, the photodegradation of crystal violet dye using the optimised dosage of C-dots@CdS-6 exhibited an efficiency of 97.3 % in 120 min of visible light irradiation under neutral conditions. The detailed kinetic study reveals that the mechanism of photodegradation of crystal violet dye using C-dots@CdS system can be described using pseudo-second-order kinetics. The presence of oxygen rich hydrophilic surface functionalities of C-dots, the formation of near-surface heterojunction and the suitable band structure of C-dots@CdS system leading to the optimum charge carrier separation kinetics can be attributed to the enhanced photocatalytic performance. This work offers a promising strategy to develop bio-derived C-dots based heterojunction photocatalyst to address the burgeoning energy and environmental demands.
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Affiliation(s)
- S P Smrithi
- Department of Chemistry, M S Ramaiah Institute of Technology (An Autonomous Institute Affiliated to Visvesvaraya Technological University, Belgaum), Bengaluru 560054, India; Department of Chemistry/Biochemistry, M S Ramaiah College of Arts, Science and Commerce (Affiliated to Bangalore Central University), Bangalore 560054, India
| | - Nagaraju Kottam
- Department of Chemistry, M S Ramaiah Institute of Technology (An Autonomous Institute Affiliated to Visvesvaraya Technological University, Belgaum), Bengaluru 560054, India.
| | - Archna Narula
- Department of Chemical Engineering, M S Ramaiah Institute of Technology (An Autonomous Institute Affiliated to Visvesvaraya Technological University, Belgaum), Bengaluru 560054, India
| | - G M Madhu
- Department of Chemical Engineering, M S Ramaiah Institute of Technology (An Autonomous Institute Affiliated to Visvesvaraya Technological University, Belgaum), Bengaluru 560054, India
| | - Riyaz Mohammed
- Department of Chemical Engineering, M S Ramaiah Institute of Technology (An Autonomous Institute Affiliated to Visvesvaraya Technological University, Belgaum), Bengaluru 560054, India
| | - R Agilan
- Department of Chemical Engineering, M S Ramaiah Institute of Technology (An Autonomous Institute Affiliated to Visvesvaraya Technological University, Belgaum), Bengaluru 560054, India
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23
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Bai Y, Li C, Liu L, Yamaguchi Y, Bahri M, Yang H, Gardner A, Zwijnenburg MA, Browning ND, Cowan AJ, Kudo A, Cooper AI, Sprick RS. Photocatalytic Overall Water Splitting Under Visible Light Enabled by a Particulate Conjugated Polymer Loaded with Palladium and Iridium. Angew Chem Int Ed Engl 2022; 61:e202201299. [PMID: 35377540 PMCID: PMC9321674 DOI: 10.1002/anie.202201299] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2022] [Indexed: 11/27/2022]
Abstract
Polymer photocatalysts have received growing attention in recent years for photocatalytic hydrogen production from water. Most studies report hydrogen production with sacrificial electron donors, which is unsuitable for large-scale hydrogen energy production. Here we show that the palladium/iridium oxide-loaded homopolymer of dibenzo[b,d]thiophene sulfone (P10) facilitates overall water splitting to produce stoichiometric amounts of H2 and O2 for an extended period (>60 hours) after the system stabilized. These results demonstrate that conjugated polymers can act as single component photocatalytic systems for overall water splitting when loaded with suitable co-catalysts, albeit currently with low activities. Transient spectroscopy shows that the IrO2 co-catalyst plays an important role in the generation of the charge separated state required for water splitting, with evidence for fast hole transfer to the co-catalyst.
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Affiliation(s)
- Yang Bai
- Materials Innovation Factory & Department of ChemistryUniversity of LiverpoolLiverpoolL7 3NYUK
- Institute of Materials Research and EngineeringAgency for Science Technology and ResearchSingapore138634Singapore
| | - Chao Li
- Stephenson Institute for Renewable EnergyUniversity of LiverpoolLiverpoolL69 7ZFUK
| | - Lunjie Liu
- Materials Innovation Factory & Department of ChemistryUniversity of LiverpoolLiverpoolL7 3NYUK
| | - Yuichi Yamaguchi
- Department of Applied ChemistryTokyo University of ScienceTokyo162-8601Japan
| | - Mounib Bahri
- Albert Crewe Centre for Electron MicroscopyUniversity of LiverpoolLiverpoolL69 3GLUK
| | - Haofan Yang
- Materials Innovation Factory & Department of ChemistryUniversity of LiverpoolLiverpoolL7 3NYUK
| | - Adrian Gardner
- Stephenson Institute for Renewable EnergyUniversity of LiverpoolLiverpoolL69 7ZFUK
| | | | - Nigel D. Browning
- Albert Crewe Centre for Electron MicroscopyUniversity of LiverpoolLiverpoolL69 3GLUK
| | - Alexander J. Cowan
- Stephenson Institute for Renewable EnergyUniversity of LiverpoolLiverpoolL69 7ZFUK
| | - Akihiko Kudo
- Department of Applied ChemistryTokyo University of ScienceTokyo162-8601Japan
| | - Andrew I. Cooper
- Materials Innovation Factory & Department of ChemistryUniversity of LiverpoolLiverpoolL7 3NYUK
| | - Reiner Sebastian Sprick
- Materials Innovation Factory & Department of ChemistryUniversity of LiverpoolLiverpoolL7 3NYUK
- Department of Pure and Applied ChemistryUniversity of StrathclydeGlasgowG1 1XLUK
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24
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Qasim M, Liu M, Guo L. Z-scheme P-doped-g-C3N4/Fe2P/red-P ternary composite enables efficient two-electron photocatalytic pure water splitting. Catal Today 2022. [DOI: 10.1016/j.cattod.2022.05.007] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
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25
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Bai Y, Li C, Liu L, Yamaguchi Y, Bahri M, Yang H, Gardner A, Zwijnenburg MA, Browning ND, Cowan AJ, Kudo A, Cooper AI, Sprick RS. Photocatalytic Overall Water Splitting Under Visible Light Enabled by a Particulate Conjugated Polymer Loaded with Palladium and Iridium**. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202201299] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Yang Bai
- Materials Innovation Factory & Department of Chemistry University of Liverpool Liverpool L7 3NY UK
- Institute of Materials Research and Engineering Agency for Science Technology and Research Singapore 138634 Singapore
| | - Chao Li
- Stephenson Institute for Renewable Energy University of Liverpool Liverpool L69 7ZF UK
| | - Lunjie Liu
- Materials Innovation Factory & Department of Chemistry University of Liverpool Liverpool L7 3NY UK
| | - Yuichi Yamaguchi
- Department of Applied Chemistry Tokyo University of Science Tokyo 162-8601 Japan
| | - Mounib Bahri
- Albert Crewe Centre for Electron Microscopy University of Liverpool Liverpool L69 3GL UK
| | - Haofan Yang
- Materials Innovation Factory & Department of Chemistry University of Liverpool Liverpool L7 3NY UK
| | - Adrian Gardner
- Stephenson Institute for Renewable Energy University of Liverpool Liverpool L69 7ZF UK
| | | | - Nigel D. Browning
- Albert Crewe Centre for Electron Microscopy University of Liverpool Liverpool L69 3GL UK
| | - Alexander J. Cowan
- Stephenson Institute for Renewable Energy University of Liverpool Liverpool L69 7ZF UK
| | - Akihiko Kudo
- Department of Applied Chemistry Tokyo University of Science Tokyo 162-8601 Japan
| | - Andrew I. Cooper
- Materials Innovation Factory & Department of Chemistry University of Liverpool Liverpool L7 3NY UK
| | - Reiner Sebastian Sprick
- Materials Innovation Factory & Department of Chemistry University of Liverpool Liverpool L7 3NY UK
- Department of Pure and Applied Chemistry University of Strathclyde Glasgow G1 1XL UK
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Tao X, Zhao Y, Wang S, Li C, Li R. Recent advances and perspectives for solar-driven water splitting using particulate photocatalysts. Chem Soc Rev 2022; 51:3561-3608. [PMID: 35403632 DOI: 10.1039/d1cs01182k] [Citation(s) in RCA: 107] [Impact Index Per Article: 53.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
The conversion and storage of solar energy to chemical energy via artificial photosynthesis holds significant potential for optimizing the energy situation and mitigating the global warming effect. Photocatalytic water splitting utilizing particulate semiconductors offers great potential for the production of renewable hydrogen, while this cross-road among biology, chemistry, and physics features a topic with fascinating interdisciplinary challenges. Progress in photocatalytic water splitting has been achieved in recent years, ranging from fundamental scientific research to pioneering scalable practical applications. In this review, we focus mainly on the recent advancements in terms of the development of new light-absorption materials, insights and strategies for photogenerated charge separation, and studies towards surface catalytic reactions and mechanisms. In particular, we emphasize several efficient charge separation strategies such as surface-phase junction, spatial charge separation between facets, and polarity-induced charge separation, and also discuss their unique properties including ferroelectric and photo-Dember effects on spatial charge separation. By integrating time- and space-resolved characterization techniques, critical issues in photocatalytic water splitting including photoinduced charge generation, separation and transfer, and catalytic reactions are analyzed and reviewed. In addition, photocatalysts with state-of-art efficiencies in the laboratory stage and pioneering scalable solar water splitting systems for hydrogen production using particulate photocatalysts are presented. Finally, some perspectives and outlooks on the future development of photocatalytic water splitting using particulate photocatalysts are proposed.
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Affiliation(s)
- Xiaoping Tao
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian National Laboratory for Clean Energy, Zhongshan Road 457, Dalian, 116023, China.
| | - Yue Zhao
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian National Laboratory for Clean Energy, Zhongshan Road 457, Dalian, 116023, China.
| | - Shengyang Wang
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian National Laboratory for Clean Energy, Zhongshan Road 457, Dalian, 116023, China.
| | - Can Li
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian National Laboratory for Clean Energy, Zhongshan Road 457, Dalian, 116023, China. .,University of Chinese Academy of Sciences, China
| | - Rengui Li
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian National Laboratory for Clean Energy, Zhongshan Road 457, Dalian, 116023, China.
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Morawski O, Gawryś P, Sadło J, Sobolewski AL. Photochemical Hydrogen Storage with Hexaazatrinaphthylene (HATN). Chemphyschem 2022; 23:e202200077. [PMID: 35377513 DOI: 10.1002/cphc.202200077] [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: 02/07/2022] [Revised: 03/14/2022] [Indexed: 11/10/2022]
Abstract
When irradiated with violet light, hexaazatrinaphthylene (HATN) extracts a hydrogen atom from an alcohol forming a long-living hydrogenated species. The kinetic isotope effect for fluorescence decay in deuterated methanol (1.56) indicates that the lowest singlet excited state of the molecule is a precursor for intermolecular hydrogen transfer. The photochemical hydrogenation occurs in several alcohols (methanol, ethanol, isopropanol) but not in water. Hydrogenated HATN can be detected optically by an absorption band at 1.78 eV as well as with EPR and NMR techniques. Mass spectroscopy of photoproducts reveal di-hydrogenated HATN structures along with methoxylated and methylated HATN molecules which are generated through the reaction with methoxy radicals (remnants from alcohol splitting). Experimental findings are consistent with the theoretical results which predicted that for the excited state of the HATN-solvent molecular complex, there exists a barrierless hydrogen transfer from methanol but a barrier for the similar oxidation of water.
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Affiliation(s)
- Olaf Morawski
- Institute of Physics Polish Academy of Sciences: Instytut Fizyki Polskiej Akademii Nauk, Radiation and Spectroscopy, Al. Lotnikow 32/46, 02-668, Warsaw, POLAND
| | - Paweł Gawryś
- Institute of Physics Polish Academy of Sciences: Instytut Fizyki Polskiej Akademii Nauk, Radiation and Spectroscopy, Al. Lotników 32/46, 02-668, Warszawa, POLAND
| | - Jarosław Sadło
- Institute of Nuclear Chemistry and Technology, Spectroscopy, ul. Dorodna 16, 03-195, Warsaw, POLAND
| | - Andrzej L Sobolewski
- Institute of Physics Polish Academy of Sciences: Instytut Fizyki Polskiej Akademii Nauk, Radiation and Spectroscopy, Al. Lotników 32/46, 02-668, Warsaw, POLAND
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Preparation of a Bi12O15Cl6@W18O49@g-C3N4/PDI heterojunction with dual charge transfer paths and its photocatalytic performance for phenolic pollutants. Sep Purif Technol 2022. [DOI: 10.1016/j.seppur.2022.120539] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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An S, Hassan SZ, Jung JW, Cha H, Cho CH, Chung DS. Covalent Networking of a Conjugated-Polymer Photocatalyst to Promote Exciton Diffusion in the Aqueous Phase for Efficient Hydrogen Production. SMALL METHODS 2022; 6:e2200010. [PMID: 35253408 DOI: 10.1002/smtd.202200010] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/04/2022] [Revised: 01/28/2022] [Indexed: 06/14/2023]
Abstract
A conjugated polymer particle in an aqueous phase is covalently networked in 3D by crosslinking with azide groups, leading to significantly enhanced activity-a high photocatalytic H2 evolution rate (11 024 µmol g-1 h-1 (λ > 420 nm)) and a high apparent quantum yield (up to 0.8%). The reaction between the photoactive azide and the alkyl chains of the conjugated polymer provides more intact intermolecular polymeric interactions in the colloidal state, thus preventing physical swelling and inhibiting the recombination of photoproduced carriers. The covalent network efficiently promotes exciton diffusion, which greatly facilitates charge separation and transfer. The azide photo-crosslinking also leads to more compact and better-packed nanoparticles in the aqueous phase and efficient transfer of excitons to the outer surface of the nanoparticles, where photocatalytic reactions occur. These results show that photo-crosslinking can suppress the adverse effects of alkyl chains which inhibit photocatalytic performance. Therefore, covalent crosslinking is a promising strategy for the development of solar and hydrogen energy.
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Affiliation(s)
- Sanghyeok An
- Department of Chemical Engineering, Pohang University of Science and Technology (POSTECH), Pohang, 37363, Republic of Korea
| | - Syed Zahid Hassan
- Department of Chemical Engineering, Pohang University of Science and Technology (POSTECH), Pohang, 37363, Republic of Korea
| | - Jin-Woo Jung
- Department of Emerging Materials Science, Daegu Gyeongbuk Institute of Science and Technology (DGIST), Daegu, 42988, Republic of Korea
| | - Hyojung Cha
- Department of Hydrogen & Renewable Energy, Kyungpook National University, Daegu, 41566, Republic of Korea
| | - Chang-Hee Cho
- Department of Emerging Materials Science, Daegu Gyeongbuk Institute of Science and Technology (DGIST), Daegu, 42988, Republic of Korea
| | - Dae Sung Chung
- Department of Chemical Engineering, Pohang University of Science and Technology (POSTECH), Pohang, 37363, Republic of Korea
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30
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Yuan J, Yuan Y, Zhang J, Xu H, Mao Z, Ma Y. Mechanistic Insights into Selective Acetaldehyde Formation from Ethanol Oxidation on Hematite Photoanodes by Operando Spectroelectrochemistry. CHEMSUSCHEM 2022; 15:e202102313. [PMID: 34978391 DOI: 10.1002/cssc.202102313] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/28/2021] [Revised: 12/30/2021] [Indexed: 06/14/2023]
Abstract
This study employed operando spectroelectrochemical l and photoelectrochemical methods to investigate the charge carrier dynamics of photogenerated holes in hematite for ethanol oxidation and its possible over-oxidation. Ethanol oxidation was found to form acetaldehyde with around 100 % initial selectivity and faradaic efficiency. The overoxidation of acetaldehyde was suppressed by being unable to kinetically compete with ethanol oxidation in terms of turnover frequency by a factor of ten. Temperature-dependent rate law analyses were applied to determine the activation energies of these two oxidations. For the ethanol oxidation, the activation energy was 195 meV, compared to 398 meV for acetaldehyde oxidation. These results were correlated with the valence band potential to elucidate the advantage of using hematite for safer and sustainable value-added aldehyde synthesis compared to the industrial method. The dynamics of ethanol oxidation also addressed the challenges in broad-spectrum deep oxidation of organic compounds in water purification using metal oxides.
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Affiliation(s)
- Jianhe Yuan
- Key Laboratory of Science and Technology of Eco-Textile, Ministry of Education, College of Chemistry, Chemical Engineering and Biotechnology, Innovation Center for Textile Science and Technology, Donghua University, 201620, Shanghai, P. R. China
| | - Yuling Yuan
- Key Laboratory of Science and Technology of Eco-Textile, Ministry of Education, College of Chemistry, Chemical Engineering and Biotechnology, Innovation Center for Textile Science and Technology, Donghua University, 201620, Shanghai, P. R. China
| | - Jingjing Zhang
- Key Laboratory of Science and Technology of Eco-Textile, Ministry of Education, College of Chemistry, Chemical Engineering and Biotechnology, Innovation Center for Textile Science and Technology, Donghua University, 201620, Shanghai, P. R. China
| | - Hong Xu
- Key Laboratory of Science and Technology of Eco-Textile, Ministry of Education, College of Chemistry, Chemical Engineering and Biotechnology, Innovation Center for Textile Science and Technology, Donghua University, 201620, Shanghai, P. R. China
| | - Zhiping Mao
- Key Laboratory of Science and Technology of Eco-Textile, Ministry of Education, College of Chemistry, Chemical Engineering and Biotechnology, Innovation Center for Textile Science and Technology, Donghua University, 201620, Shanghai, P. R. China
- National Engineering Research Center for Dyeing and Finishing of Textiles, Donghua University, 201620, Shanghai, P. R. China
- National Manufacturing Innovation Center of Advanced Dyeing and Finishing Technology, 271000, Taian City, Shandong Province, P. R. China
| | - Yimeng Ma
- Key Laboratory of Science and Technology of Eco-Textile, Ministry of Education, College of Chemistry, Chemical Engineering and Biotechnology, Innovation Center for Textile Science and Technology, Donghua University, 201620, Shanghai, P. R. China
- National Engineering Research Center for Dyeing and Finishing of Textiles, Donghua University, 201620, Shanghai, P. R. China
- National Manufacturing Innovation Center of Advanced Dyeing and Finishing Technology, 271000, Taian City, Shandong Province, P. R. China
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31
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Elumalai N, Prabhu S, Selvaraj M, Silambarasan A, Navaneethan M, Harish S, Ramu P, Ramesh R. Enhanced photocatalytic activity of ZnO hexagonal tube/r-GO composite on degradation of organic aqueous pollutant and study of charge transport properties. CHEMOSPHERE 2022; 291:132782. [PMID: 34748798 DOI: 10.1016/j.chemosphere.2021.132782] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/11/2021] [Revised: 10/11/2021] [Accepted: 11/02/2021] [Indexed: 06/13/2023]
Abstract
ZnO hexagonal tube and ZnO/r-GO nanocomposites were synthesized by hydrothermal method and the nanostructures were characterized by XRD, UV-DRS, PL, FTIR, FESEM, and TEM techniques. The main violet emission peak of the synthesized nanostructures is due to the transition between interstitial zinc and hole (valence band) of ZnO. The potential of ZnO/r-GO nanocomposite was evaluated using methyl orange (MO) and rhodamine-B (RhB), and the results were compared with the activity of synthesized ZnO nanostructures. More than 95% of MO and RhB were by ZnO/r-GO nanocomposite and it was found to be higher than that of ZnO hexagonal tube. The degradation MO and RhB were found to follow first-order kinetics and it has a rate constant of 7.68 × 10-2and 7.83 × 10-2 min-1, respectively. These results are mainly due to the enhanced charge transport property. Trapping experiments show that superoxide radical anion and hydroxide radicals are chief species responsible for the degradation of MO and RhB. The chemical stability of the nanocomposite was evaluated by cycle test experiments and it reveals that the catalyst can be reused up to few cycles without considerable loss of photocatalytic activity. This work affords a simple stratagem to integrate ZnO hexagonal tubes and r-GO nanosheets to construct effective catalysts for the degradation of organic compounds.
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Affiliation(s)
- N Elumalai
- Department of Physics, Government Arts College (Autonomous), Salem, 7, Tamil Nadu, India; Department of Physics, Periyar University, Salem, 11, Tamil Nadu, India
| | - S Prabhu
- Department of Physics, Periyar University, Salem, 11, Tamil Nadu, India
| | - M Selvaraj
- Department of Chemistry, Faculty of Science, King Khalid University, Abha, 61413, Saudi Arabia.
| | - A Silambarasan
- Department of Chemistry, Vivekanandha College of Arts and Sciences for Women (Autonomous), Elayampalayam, Namakkal, 637 205, Tamil Nadu, India.
| | - M Navaneethan
- Nanotechnology Research Centre, SRM Institute of Science and Technology, Kanchepuram, Tamil Nadu, India; Department of Physics and Nanotechnology, SRM Institute of Science and Technology, Kanchepuram, Tamil Nadu, India.
| | - S Harish
- Department of Physics and Nanotechnology, SRM Institute of Science and Technology, Kanchepuram, Tamil Nadu, India
| | - P Ramu
- Department of Physics, Government Arts College (Autonomous), Salem, 7, Tamil Nadu, India.
| | - R Ramesh
- Department of Physics, Periyar University, Salem, 11, Tamil Nadu, India.
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32
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Fang Y, Hou Y, Fu X, Wang X. Semiconducting Polymers for Oxygen Evolution Reaction under Light Illumination. Chem Rev 2022; 122:4204-4256. [PMID: 35025505 DOI: 10.1021/acs.chemrev.1c00686] [Citation(s) in RCA: 82] [Impact Index Per Article: 41.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Sunlight-driven water splitting to produce hydrogen fuel has stimulated intensive scientific interest, as this technology has the potential to revolutionize fossil fuel-based energy systems in modern society. The oxygen evolution reaction (OER) determines the performance of overall water splitting owing to its sluggish kinetics with multielectron transfer processing. Polymeric photocatalysts have recently been developed for the OER, and substantial progress has been realized in this emerging research field. In this Review, the focus is on the photocatalytic technologies and materials of polymeric photocatalysts for the OER. Two practical systems, namely, particle suspension systems and film-based photoelectrochemical systems, form two main sections. The concept is reviewed in terms of thermodynamics and kinetics, and polymeric photocatalysts are discussed based on three key characteristics, namely, light absorption, charge separation and transfer, and surface oxidation reactions. A satisfactory OER performance by polymeric photocatalysts will eventually offer a platform to achieve overall water splitting and other advanced applications in a cost-effective, sustainable, and renewable manner using solar energy.
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Affiliation(s)
- Yuanxing Fang
- State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fuzhou 350116, P. R. China
| | - Yidong Hou
- State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fuzhou 350116, P. R. China
| | - Xianzhi Fu
- State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fuzhou 350116, P. R. China
| | - Xinchen Wang
- State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fuzhou 350116, P. R. China
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Liu M, Wei C, Zhuzhang H, Zhou J, Pan Z, Lin W, Yu Z, Zhang G, Wang X. Fully Condensed Poly (Triazine Imide) Crystals: Extended π‐Conjugation and Structural Defects for Overall Water Splitting. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202113389] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Minghui Liu
- State Key Laboratory of Photocatalysis on Energy and Environment College of Chemistry Fuzhou University Fuzhou 350108 P. R. China
| | - Changgeng Wei
- State Key Laboratory of Photocatalysis on Energy and Environment College of Chemistry Fuzhou University Fuzhou 350108 P. R. China
| | - Hangyu Zhuzhang
- State Key Laboratory of Photocatalysis on Energy and Environment College of Chemistry Fuzhou University Fuzhou 350108 P. R. China
| | - Jingmin Zhou
- State Key Laboratory of Photocatalysis on Energy and Environment College of Chemistry Fuzhou University Fuzhou 350108 P. R. China
| | - Zhiming Pan
- State Key Laboratory of Photocatalysis on Energy and Environment College of Chemistry Fuzhou University Fuzhou 350108 P. R. China
| | - Wei Lin
- State Key Laboratory of Photocatalysis on Energy and Environment College of Chemistry Fuzhou University Fuzhou 350108 P. R. China
| | - Zhiyang Yu
- State Key Laboratory of Photocatalysis on Energy and Environment College of Chemistry Fuzhou University Fuzhou 350108 P. R. China
| | - Guigang Zhang
- State Key Laboratory of Photocatalysis on Energy and Environment College of Chemistry Fuzhou University Fuzhou 350108 P. R. China
| | - Xinchen Wang
- State Key Laboratory of Photocatalysis on Energy and Environment College of Chemistry Fuzhou University Fuzhou 350108 P. R. China
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Sekar S, Preethi V, Saravanan S, Kim DY, Lee S. Excellent photocatalytic performances of Co 3O 4-AC nanocomposites for H 2 production via wastewater splitting. CHEMOSPHERE 2022; 286:131823. [PMID: 34426138 DOI: 10.1016/j.chemosphere.2021.131823] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/27/2021] [Revised: 07/26/2021] [Accepted: 08/04/2021] [Indexed: 06/13/2023]
Abstract
Natural sunlight-driven photocatalytic hydrogen production from wastewater is one of the most desirable techniques that can realize future green energy technology. Herein, we report the synthesis and the characterization of the biomass activated carbon (AC)-decorated cobalt oxide (Co3O4) nanocomposites for solar-stimulated photocatalytic hydrogen production from sulphide wastewater. The Co3O4-AC nanocomposites were ultrasonically synthesized by using hydrothermally-grown spinel Co3O4 nanoflakes and biomass-derived AC nanoflakes. Co3O4-AC showed a nanobundle-like aggregated morphology, and exhibited a large specific surface area (~133 m2/g). Through utilizing Co3O4-AC as a photocatalyst for photocatalytic splitting of sulphide wastewater (0.2 M) under solar irradiance with 730 W/m2, an enhanced H2 production efficiency (~70 mL/h) was achieved owing to the synergic effects from 2-dimentionally configured Co3O4 and AC microstructures; i.e., large surface area of Co3O4 and high electrical conductivity of AC. These findings suggest the nanocomposites of Co3O4-AC to hold great promise for the green approach of photocatalytic wastewater splitting.
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Affiliation(s)
- Sankar Sekar
- Department of Semiconductor Science, Dongguk University-Seoul, Seoul, 04620, Republic of Korea; Quantum-functional Semiconductor Research Center, Dongguk University-Seoul, Seoul, 04620, Republic of Korea
| | - V Preethi
- Renewable Energy Lab., Hindustan Institute of Technology and Science, Chennai, 603103, Tamil Nadu, India.
| | - S Saravanan
- Department of Mechanical Engineering, K. Ramakrishnan College of Technology, Trichy, 621112, Tamil Nadu, India
| | - Deuk Young Kim
- Department of Semiconductor Science, Dongguk University-Seoul, Seoul, 04620, Republic of Korea; Quantum-functional Semiconductor Research Center, Dongguk University-Seoul, Seoul, 04620, Republic of Korea
| | - Sejoon Lee
- Department of Semiconductor Science, Dongguk University-Seoul, Seoul, 04620, Republic of Korea; Quantum-functional Semiconductor Research Center, Dongguk University-Seoul, Seoul, 04620, Republic of Korea.
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35
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Meng A, Zhou S, Wen D, Han P, Su Y. g-C3N4/CoTiO3 S-scheme heterojunction for enhanced visible light hydrogen production through photocatalytic pure water splitting. CHINESE JOURNAL OF CATALYSIS 2022. [DOI: 10.1016/s1872-2067(22)64111-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
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36
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Mitchell E, Law A, Godin R. Interfacial charge transfer in carbon nitride heterojunctions monitored by optical methods. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY C: PHOTOCHEMISTRY REVIEWS 2021. [DOI: 10.1016/j.jphotochemrev.2021.100453] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
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Abdul Nasir J, Munir A, Ahmad N, Haq TU, Khan Z, Rehman Z. Photocatalytic Z-Scheme Overall Water Splitting: Recent Advances in Theory and Experiments. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2021; 33:e2105195. [PMID: 34617345 DOI: 10.1002/adma.202105195] [Citation(s) in RCA: 61] [Impact Index Per Article: 20.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/06/2021] [Revised: 08/23/2021] [Indexed: 06/13/2023]
Abstract
Photocatalytic water splitting is considered one of the most important and appealing approaches for the production of green H2 to address the global energy demand. The utmost possible form of artificial photosynthesis is a two-step photoexcitation known as "Z-scheme", which mimics the natural photosystem. This process solely relies on the effective coupling and suitable band positions of semiconductors (SCs) and redox mediators for the purpose to catalyze the surface chemical reactions and significantly deter the backward reaction. In recent years, the Z-scheme strategies and their key role have been studied progressively through experimental approaches. In addition, theoretical studies based on density functional theory have provided detailed insight into the mechanistic aspects of some breathtakingly complex problems associated with hydrogen evolution reaction and oxygen evolution reaction. In this context, this critical review gives an overview of the fundamentals of Z-scheme photocatalysis, including both theoretical and experimental advancements in the field of photocatalytic water splitting, and suggests future perspectives.
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Affiliation(s)
- Jamal Abdul Nasir
- Kathleen Lonsdale Materials Chemistry, Department of Chemistry, University College London, 20 Gordon Street, London, WC1H 0AJ, UK
- Department of Chemistry, Quaid-i-Azam University, Islamabad, 45320, Pakistan
| | - Akhtar Munir
- Department of Chemistry, University of Sialkot, 1 Km, main Daska road, Sialkot, Punjab, 51310, Pakistan
- Department of Chemistry & Chemical Engineering, SBA School of Science & Engineering, Lahore University of Management Sciences (LUMS), DHA, Lahore, 54792, Pakistan
| | - Naveed Ahmad
- Institute of Pharmaceutical Science, Faculty of Life Science and Medicine, King's College London, 150 Stamford Street, London, SE1 9NH, UK
- University of Swat. Charbagh, Swat, Khyber Pakhtunkhwa, Pakistan
| | - Tanveer Ul Haq
- Sustainable Energy Engineering, Frank H. Dotterweich College of Engineering, Texas A&M University, Kingsville, TX, 78363-8202, USA
| | - Zaibunisa Khan
- Kathleen Lonsdale Materials Chemistry, Department of Chemistry, University College London, 20 Gordon Street, London, WC1H 0AJ, UK
| | - Ziaur Rehman
- Kathleen Lonsdale Materials Chemistry, Department of Chemistry, University College London, 20 Gordon Street, London, WC1H 0AJ, UK
- Department of Chemistry, Quaid-i-Azam University, Islamabad, 45320, Pakistan
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38
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Wan Y, Fu LH, Li C, Lin J, Huang P. Conquering the Hypoxia Limitation for Photodynamic Therapy. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2021; 33:e2103978. [PMID: 34580926 DOI: 10.1002/adma.202103978] [Citation(s) in RCA: 241] [Impact Index Per Article: 80.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/25/2021] [Revised: 07/11/2021] [Indexed: 06/13/2023]
Abstract
Photodynamic therapy (PDT) has aroused great research interest in recent years owing to its high spatiotemporal selectivity, minimal invasiveness, and low systemic toxicity. However, due to the hypoxic nature characteristic of many solid tumors, PDT is frequently limited in therapeutic effect. Moreover, the consumption of O2 during PDT may further aggravate the tumor hypoxic condition, which promotes tumor proliferation, metastasis, and invasion resulting in poor prognosis of treatment. Therefore, numerous efforts have been made to increase the O2 content in tumor with the goal of enhancing PDT efficacy. Herein, these strategies developed in past decade are comprehensively reviewed to alleviate tumor hypoxia, including 1) delivering exogenous O2 to tumor directly, 2) generating O2 in situ, 3) reducing tumor cellular O2 consumption by inhibiting respiration, 4) regulating the TME, (e.g., normalizing tumor vasculature or disrupting tumor extracellular matrix), and 5) inhibiting the hypoxia-inducible factor 1 (HIF-1) signaling pathway to relieve tumor hypoxia. Additionally, the O2 -independent Type-I PDT is also discussed as an alternative strategy. By reviewing recent progress, it is hoped that this review will provide innovative perspectives in new nanomaterials designed to combat hypoxia and avoid the associated limitation of PDT.
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Affiliation(s)
- Yilin Wan
- Marshall Laboratory of Biomedical Engineering, International Cancer Center, Laboratory of Evolutionary Theranostics (LET), School of Biomedical Engineering, Health Science Center, Shenzhen University, Shenzhen, 518060, China
| | - Lian-Hua Fu
- Marshall Laboratory of Biomedical Engineering, International Cancer Center, Laboratory of Evolutionary Theranostics (LET), School of Biomedical Engineering, Health Science Center, Shenzhen University, Shenzhen, 518060, China
| | - Chunying Li
- Marshall Laboratory of Biomedical Engineering, International Cancer Center, Laboratory of Evolutionary Theranostics (LET), School of Biomedical Engineering, Health Science Center, Shenzhen University, Shenzhen, 518060, China
| | - Jing Lin
- Marshall Laboratory of Biomedical Engineering, International Cancer Center, Laboratory of Evolutionary Theranostics (LET), School of Biomedical Engineering, Health Science Center, Shenzhen University, Shenzhen, 518060, China
| | - Peng Huang
- Marshall Laboratory of Biomedical Engineering, International Cancer Center, Laboratory of Evolutionary Theranostics (LET), School of Biomedical Engineering, Health Science Center, Shenzhen University, Shenzhen, 518060, China
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39
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Liu M, Wei C, Zhuzhang H, Zhou J, Pan Z, Lin W, Yu Z, Zhang G, Wang X. Fully Condensed Poly (Triazine Imide) Crystals: Extended π-Conjugation and Structural Defects for Overall Water Splitting. Angew Chem Int Ed Engl 2021; 61:e202113389. [PMID: 34750939 DOI: 10.1002/anie.202113389] [Citation(s) in RCA: 49] [Impact Index Per Article: 16.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2021] [Indexed: 11/07/2022]
Abstract
Conventional polymerization for the synthesis of carbon nitride usually generates amorphous heptazine-based melon with an abundance of undesired structural defects, which function as charge carrier recombination centers to decrease the photocatalytic efficiency. Herein, a fully condensed poly (triazine imide) crystal with extended π-conjugation and deficient structure defects was obtained by conducting the polycondensation in a mild molten salt of LiCl/NaCl. The melting point of the binary LiCl/NaCl system is around 550 °C, which substantially restrain the depolymerization of triazine units and extend the π-conjugation. The optimized polymeric carbon nitride crystal exhibits a high apparent quantum efficiency of 12 % (λ=365 nm) for hydrogen production by one-step excitation overall water splitting, owing to the efficient exciton dissociation and the subsequent fast transfer of charge carriers.
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Affiliation(s)
- Minghui Liu
- State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fuzhou, 350108, P. R. China
| | - Changgeng Wei
- State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fuzhou, 350108, P. R. China
| | - Hangyu Zhuzhang
- State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fuzhou, 350108, P. R. China
| | - Jingmin Zhou
- State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fuzhou, 350108, P. R. China
| | - Zhiming Pan
- State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fuzhou, 350108, P. R. China
| | - Wei Lin
- State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fuzhou, 350108, P. R. China
| | - Zhiyang Yu
- State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fuzhou, 350108, P. R. China
| | - Guigang Zhang
- State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fuzhou, 350108, P. R. China
| | - Xinchen Wang
- State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fuzhou, 350108, P. R. China
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40
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Liu S, Chai J, Sun S, Zhang L, Yang J, Fu X, Hai J, Jing YH, Wang B. Site-Selective Photosynthesis of Ag-AgCl@Au Nanomushrooms for NIR-II Light-Driven O 2- and O 2•--Evolving Synergistic Photothermal Therapy against Deep Hypoxic Tumors. ACS APPLIED MATERIALS & INTERFACES 2021; 13:46451-46463. [PMID: 34570459 DOI: 10.1021/acsami.1c16999] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Light-driven endogenous water oxidation has been considered as an attractive and desirable way to obtain O2 and reactive oxygen species (ROS) in the hypoxic tumor microenvironment. However, the use of a second near-infrared (NIR-II) light to achieve endogenous H2O oxidation to alleviate tumor hypoxia and realize deep hypoxic tumor phototherapy is still a challenge. Herein, novel plasmonic Ag-AgCl@Au core-shell nanomushrooms (NMs) were synthesized by the selective photodeposition of plasmonic Au at the bulge sites of the Ag-AgCl nanocubes (NCs) under visible light irradiation. Upon NIR-II light irradiation, the resulting Ag-AgCl@Au NMs could oxidize endogenous H2O to produce O2 to alleviate tumor hypoxia. Almost synchronously, O2 could react with electrons on the conduction band of the AgCl core to generate superoxide radicals (O2•-)for photodynamic therapy. Moreover, Ag-AgCl@Au NMs with an excellent photothermal performance could further promote the phototherapy effect. In vitro and in vivo experimental results show that the resulting Ag-AgCl@Au NMs could significantly improve tumor hypoxia and enhance phototherapy against a hypoxic tumor. The present study provides a new strategy to design H2O-activatable, O2- and ROS-evolving NIR II light-response nanoagents for the highly efficient and synergistic treatment of deep O2-deprived tumor tissue.
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Affiliation(s)
- Sha Liu
- Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province, State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, P. R. China
| | - Jian Chai
- Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province, State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, P. R. China
| | - Shihao Sun
- Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province, State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, P. R. China
| | - Lang Zhang
- Institute of Anatomy and Histology & Embryology, School of Basic Medical Sciences, Lanzhou University, Lanzhou 730000, P. R. China
| | - Jiayue Yang
- Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province, State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, P. R. China
| | - Xu Fu
- Laboratory of Emergency Medicine, Lanzhou University Second Hospital, Lanzhou 730000, P. R. China
| | - Jun Hai
- Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province, State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, P. R. China
| | - Yu-Hong Jing
- Institute of Anatomy and Histology & Embryology, School of Basic Medical Sciences, Lanzhou University, Lanzhou 730000, P. R. China
| | - Baodui Wang
- Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province, State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, P. R. China
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41
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Li J, Tian M, Zhang W, Qian J, Zhao S, Dang W, Jiang H, Li C. Structure and photocatalytic performance comparison of two distinctive copper phenylacetylides. Appl Organomet Chem 2021. [DOI: 10.1002/aoc.6352] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Jing Li
- Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education, and the Energy and Catalysis Hub, College of Chemistry and Materials Science Northwest University Xi'an China
| | - Meng Tian
- Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education, and the Energy and Catalysis Hub, College of Chemistry and Materials Science Northwest University Xi'an China
| | - Wen Zhang
- Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education, and the Energy and Catalysis Hub, College of Chemistry and Materials Science Northwest University Xi'an China
| | - Jing Qian
- Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education, and the Energy and Catalysis Hub, College of Chemistry and Materials Science Northwest University Xi'an China
| | - Sen Zhao
- Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education, and the Energy and Catalysis Hub, College of Chemistry and Materials Science Northwest University Xi'an China
| | - Wenqiang Dang
- Department of Physics Tianshui Normal University Tianshui China
| | - Hai‐Ying Jiang
- Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education, and the Energy and Catalysis Hub, College of Chemistry and Materials Science Northwest University Xi'an China
| | - Chengbo Li
- Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education, and the Energy and Catalysis Hub, College of Chemistry and Materials Science Northwest University Xi'an China
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42
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Pan Y, Xiong B, Li Z, Wu Y, Yan C, Song H. In situ constructed oxygen-vacancy-rich MoO 3-x /porous g-C 3N 4 heterojunction for synergistically enhanced photocatalytic H 2 evolution. RSC Adv 2021; 11:31219-31225. [PMID: 35496869 PMCID: PMC9041325 DOI: 10.1039/d1ra05620d] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2021] [Accepted: 09/13/2021] [Indexed: 11/21/2022] Open
Abstract
A simple method was developed for enhanced synergistic photocatalytic hydrogen evolution by in situ constructing of oxygen-vacancy-rich MoO3-x /porous g-C3N4 heterojunctions. Introduction of a MoO3-x precursor (Mo(OH)6) solution into g-C3N4 nanosheets helped to form a porous structure, and nano-sized oxygen-vacancy-rich MoO3-x in situ grew and formed a heterojunction with g-C3N4, favorable for charge separation and photocatalytic hydrogen evolution (HER). Optimizing the content of the MoO3-x precursor in the composite leads to a maximum photocatalytic H2 evolution rate of 4694.3 μmol g-1 h-1, which is approximately 4 times higher of that of pure g-C3N4 (1220.1 μmol g-1 h-1). The presence of oxygen vacancies (OVs) could give rise to electron-rich metal sites. High porosity induced more active sites on the pores' edges. Both synergistically enhanced the photocatalytic HER performance. Our study not only presented a facile method to form nano-sized heterojunctions, but also to introduce more active sites by high porosity and efficient charge separation from OVs.
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Affiliation(s)
- Yufeng Pan
- Engineering Research Center of Nano-Geomaterials of Ministry of Education, Faculty of Materials Science and Chemistry, China University of Geosciences Wuhan 430074 China
| | - Bin Xiong
- Engineering Research Center of Nano-Geomaterials of Ministry of Education, Faculty of Materials Science and Chemistry, China University of Geosciences Wuhan 430074 China
| | - Zha Li
- Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology Wuhan Hubei 430074 P. R. China
| | - Yan Wu
- Engineering Research Center of Nano-Geomaterials of Ministry of Education, Faculty of Materials Science and Chemistry, China University of Geosciences Wuhan 430074 China
| | - Chunjie Yan
- Engineering Research Center of Nano-Geomaterials of Ministry of Education, Faculty of Materials Science and Chemistry, China University of Geosciences Wuhan 430074 China
| | - Huaibin Song
- Engineering Research Center of Nano-Geomaterials of Ministry of Education, Faculty of Materials Science and Chemistry, China University of Geosciences Wuhan 430074 China
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43
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Liang Z, Meng X, Xue Y, Chen X, Zhou Y, Zhang X, Cui H, Tian J. Facile preparation of metallic 1T phase molybdenum selenide as cocatalyst coupled with graphitic carbon nitride for enhanced photocatalytic H 2 production. J Colloid Interface Sci 2021; 598:172-180. [PMID: 33901844 DOI: 10.1016/j.jcis.2021.04.066] [Citation(s) in RCA: 49] [Impact Index Per Article: 16.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2021] [Revised: 04/12/2021] [Accepted: 04/13/2021] [Indexed: 11/26/2022]
Abstract
Low-cost, highly active and efficient alternative co-catalysts that can replace precious metals such as Au and Pt are urgently needed for photocatalytic hydrogen evolution reaction (HER). Herein, we show that 1T phase MoSe2 can act as the co-catalyst in the 1T-MoSe2/g-C3N4 composites and we synthesize this composite by a one-step hydrothermal method to promote photocatalytic H2 generation. Our prepared 1T-MoSe2/g-C3N4 composite exhibits highly enhanced photocatalytic H2 production compared to that of g-C3N4 nanosheets (NSs) only. The 7 wt%-1T-MoSe2/g-C3N4 composite presents a considerably improved photocatalytic HER rate (6.95 mmol·h-1·g-1), approximately 90 times greater than that of pure g-C3N4 (0.07 mmol·h-1 g-1). Moreover, under illumination at λ = 370 nm, the apparent quantum efficiency (AQE) of the 7 wt%-1T-MoSe2/g-C3N4 composite reaches 14.0%. Furthermore, the 1T-MoSe2/g-C3N4 composites still maintain outstanding photocatalytic HER stability.
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Affiliation(s)
- Zhangqian Liang
- School of Materials Science and Engineering, Shandong University of Science and Technology, Qingdao 266590, China
| | - Xiangfa Meng
- School of Materials Science and Engineering, Shandong University of Science and Technology, Qingdao 266590, China
| | - Yanjun Xue
- School of Materials Science and Engineering, Shandong University of Science and Technology, Qingdao 266590, China
| | - Xiaoyue Chen
- School of Materials Science and Engineering, Shandong University of Science and Technology, Qingdao 266590, China
| | - Yanli Zhou
- School of Environmental and Material Engineering, Yantai University, Yantai 264005, China.
| | - Xiaoli Zhang
- School of Materials Science and Engineering, Zhengzhou University, Zhengzhou 450001, China
| | - Hongzhi Cui
- School of Materials Science and Engineering, Shandong University of Science and Technology, Qingdao 266590, China.
| | - Jian Tian
- School of Materials Science and Engineering, Shandong University of Science and Technology, Qingdao 266590, China.
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44
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Wang Y, Godin R, Durrant JR, Tang J. Efficient Hole Trapping in Carbon Dot/Oxygen-Modified Carbon Nitride Heterojunction Photocatalysts for Enhanced Methanol Production from CO 2 under Neutral Conditions. Angew Chem Int Ed Engl 2021; 60:20811-20816. [PMID: 34288316 PMCID: PMC8519127 DOI: 10.1002/anie.202105570] [Citation(s) in RCA: 51] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2021] [Revised: 06/28/2021] [Indexed: 12/04/2022]
Abstract
Artificial photosynthesis of alcohols from CO2 is still unsatisfactory owing to the rapid charge relaxation compared to the sluggish photoreactions and the oxidation of alcohol products. Here, we demonstrate that CO2 is reduced to methanol with 100 % selectivity using water as the only electron donor on a carbon nitride-like polymer (FAT) decorated with carbon dots. The quantum efficiency of 5.9 % (λ=420 nm) is 300 % higher than the previously reported carbon nitride junction. Using transient absorption spectroscopy, we observed that holes in FAT could be extracted by the carbon dots with nearly 75 % efficiency before they become unreactive by trapping. Extraction of holes resulted in a greater density of photoelectrons, indicative of reduced recombination of shorter-lived reactive electrons. This work offers a strategy to promote photocatalysis by increasing the amount of reactive photogenerated charges via structure engineering and extraction before energy losses by deep trapping.
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Affiliation(s)
- Yiou Wang
- Department of Chemical EngineeringUCLTorrington PlaceLondonWC1E 7JEUK
- Chair for Photonics and Optoelectronics, Nano-Institute MunichLudwig-Maximilians-Universität MünchenKöniginstr. 1080539MunichGermany
| | - Robert Godin
- Department of Chemistry and Center for Plastic ElectronicsImperial College LondonExhibition RoadLondonSW7 2AZUK
- Department of ChemistryThe University of British ColumbiaKelownaBCV1V 1V7Canada
| | - James R. Durrant
- Department of Chemistry and Center for Plastic ElectronicsImperial College LondonExhibition RoadLondonSW7 2AZUK
| | - Junwang Tang
- Department of Chemical EngineeringUCLTorrington PlaceLondonWC1E 7JEUK
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45
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Bian J, Zhang Z, Feng J, Thangamuthu M, Yang F, Sun L, Li Z, Qu Y, Tang D, Lin Z, Bai F, Tang J, Jing L. Energy Platform for Directed Charge Transfer in the Cascade Z‐Scheme Heterojunction: CO
2
Photoreduction without a Cocatalyst. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202106929] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Ji Bian
- Department Key Laboratory of Functional Inorganic Materials Chemistry (Ministry of Education) School of Chemistry and Materials Science International Joint Research Center and Lab for Catalytic Technology Heilongjiang University Harbin 150080 P. R. China
- School of Chemistry and Chemical Engineering Harbin Institute of Technology Harbin 150001 P. R. China
| | - Ziqing Zhang
- Department Key Laboratory of Functional Inorganic Materials Chemistry (Ministry of Education) School of Chemistry and Materials Science International Joint Research Center and Lab for Catalytic Technology Heilongjiang University Harbin 150080 P. R. China
| | - Jiannan Feng
- Department Key Laboratory of Functional Inorganic Materials Chemistry (Ministry of Education) School of Chemistry and Materials Science International Joint Research Center and Lab for Catalytic Technology Heilongjiang University Harbin 150080 P. R. China
| | - Madasamy Thangamuthu
- Department of Chemical Engineering University College London Torrington Place London WC1E 7JE UK
| | - Fan Yang
- Department Key Laboratory of Functional Inorganic Materials Chemistry (Ministry of Education) School of Chemistry and Materials Science International Joint Research Center and Lab for Catalytic Technology Heilongjiang University Harbin 150080 P. R. China
| | - Ling Sun
- Department Key Laboratory of Functional Inorganic Materials Chemistry (Ministry of Education) School of Chemistry and Materials Science International Joint Research Center and Lab for Catalytic Technology Heilongjiang University Harbin 150080 P. R. China
| | - Zhijun Li
- Department Key Laboratory of Functional Inorganic Materials Chemistry (Ministry of Education) School of Chemistry and Materials Science International Joint Research Center and Lab for Catalytic Technology Heilongjiang University Harbin 150080 P. R. China
| | - Yang Qu
- Department Key Laboratory of Functional Inorganic Materials Chemistry (Ministry of Education) School of Chemistry and Materials Science International Joint Research Center and Lab for Catalytic Technology Heilongjiang University Harbin 150080 P. R. China
| | - Dongyan Tang
- School of Chemistry and Chemical Engineering Harbin Institute of Technology Harbin 150001 P. R. China
| | - Zewei Lin
- School of Chemistry and Chemical Engineering Harbin Institute of Technology Harbin 150001 P. R. China
| | - Fuquan Bai
- International Joint Research Laboratory of Nano-Micro Architecture Chemistry Institute of Theoretical Chemistry and College of Chemistry Jilin University Changchun 130021 P. R. China
| | - Junwang Tang
- Department of Chemical Engineering University College London Torrington Place London WC1E 7JE UK
| | - Liqiang Jing
- Department Key Laboratory of Functional Inorganic Materials Chemistry (Ministry of Education) School of Chemistry and Materials Science International Joint Research Center and Lab for Catalytic Technology Heilongjiang University Harbin 150080 P. R. China
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46
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Kumar P, Mulmi S, Laishram D, Alam KM, Thakur UK, Thangadurai V, Shankar K. Water-splitting photoelectrodes consisting of heterojunctions of carbon nitride with a p-type low bandgap double perovskite oxide. NANOTECHNOLOGY 2021; 32:485407. [PMID: 33706303 DOI: 10.1088/1361-6528/abedec] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/27/2020] [Accepted: 03/11/2021] [Indexed: 06/12/2023]
Abstract
Quinary and senary non-stoichiometric double perovskites such as Ba2Ca0.66Nb1.34-xFexO6-δ(BCNF) have been utilized for gas sensing, solid oxide fuel cells and thermochemical CO2reduction. Herein, we examined their potential as narrow bandgap semiconductors for use in solar energy harvesting. A cobalt co-doped BCNF, Ba2Ca0.66Nb0.68Fe0.33Co0.33O6-δ(BCNFCo), exhibited an optical absorption edge at ∼800 nm,p-type conduction and a distinct photoresponse up to 640 nm while demonstrating high thermochemical stability. A nanocomposite of BCNFCo and g-C3N4(CN) was prepared via a facile solvent-assisted exfoliation/blending approach using dichlorobenzene and glycerol at a moderate temperature. The exfoliation of g-C3N4followed by wrapping on perovskite established an effective heterojunction between the materials for charge separation. The conjugated 2D sheets of CN enabled better charge migration resulting in increased photoelectrochemical performance. A blend composed of 40 wt% perovskites and CN performed optimally, whilst achieving a photocurrent density as high as 1.5 mA cm-2for sunlight-driven water-splitting with a Faradaic efficiency as high as ∼88%.
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Affiliation(s)
- Pawan Kumar
- Department of Electrical and Computer Engineering, University of Alberta, 9211-116 St, Edmonton, Alberta, T6G 1H9, Canada
| | - Suresh Mulmi
- Department of Chemistry, University of Calgary, 2500 University Dr NW, Calgary, Alberta, T2N 1N4, Canada
| | - Devika Laishram
- Department of Electrical and Computer Engineering, University of Alberta, 9211-116 St, Edmonton, Alberta, T6G 1H9, Canada
- Department of Chemistry, Indian Institute of Technology Jodhpur, Jodhpur, Rajasthan, 342011, India
| | - Kazi M Alam
- Department of Electrical and Computer Engineering, University of Alberta, 9211-116 St, Edmonton, Alberta, T6G 1H9, Canada
| | - Ujwal K Thakur
- Department of Electrical and Computer Engineering, University of Alberta, 9211-116 St, Edmonton, Alberta, T6G 1H9, Canada
| | - Venkataraman Thangadurai
- Department of Chemistry, University of Calgary, 2500 University Dr NW, Calgary, Alberta, T2N 1N4, Canada
| | - Karthik Shankar
- Department of Electrical and Computer Engineering, University of Alberta, 9211-116 St, Edmonton, Alberta, T6G 1H9, Canada
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47
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Wang Y, Godin R, Durrant JR, Tang J. Efficient Hole Trapping in Carbon Dot/Oxygen‐Modified Carbon Nitride Heterojunction Photocatalysts for Enhanced Methanol Production from CO
2
under Neutral Conditions. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202105570] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Affiliation(s)
- Yiou Wang
- Department of Chemical Engineering UCL Torrington Place London WC1E 7JE UK
- Chair for Photonics and Optoelectronics, Nano-Institute Munich Ludwig-Maximilians-Universität München Königinstr. 10 80539 Munich Germany
| | - Robert Godin
- Department of Chemistry and Center for Plastic Electronics Imperial College London Exhibition Road London SW7 2AZ UK
- Department of Chemistry The University of British Columbia Kelowna BC V1V 1V7 Canada
| | - James R. Durrant
- Department of Chemistry and Center for Plastic Electronics Imperial College London Exhibition Road London SW7 2AZ UK
| | - Junwang Tang
- Department of Chemical Engineering UCL Torrington Place London WC1E 7JE UK
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48
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Bian J, Zhang Z, Feng J, Thangamuthu M, Yang F, Sun L, Li Z, Qu Y, Tang D, Lin Z, Bai F, Tang J, Jing L. Energy Platform for Directed Charge Transfer in the Cascade Z-Scheme Heterojunction: CO 2 Photoreduction without a Cocatalyst. Angew Chem Int Ed Engl 2021; 60:20906-20914. [PMID: 34255409 PMCID: PMC8518548 DOI: 10.1002/anie.202106929] [Citation(s) in RCA: 57] [Impact Index Per Article: 19.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2021] [Indexed: 01/02/2023]
Abstract
A universal strategy is developed to construct a cascade Z‐Scheme system, in which an effective energy platform is the core to direct charge transfer and separation, blocking the unexpected type‐II charge transfer pathway. The dimension‐matched (001)TiO2‐g‐C3N4/BiVO4 nanosheet heterojunction (T‐CN/BVNS) is the first such model. The optimized cascade Z‐Scheme exhibits ≈19‐fold photoactivity improvement for CO2 reduction to CO in the absence of cocatalysts and costly sacrificial agents under visible‐light irradiation, compared with BVNS, which is also superior to other reported Z‐Scheme systems even with noble metals as mediators. The experimental results and DFT calculations based on van der Waals structural models on the ultrafast timescale reveal that the introduced T as the platform prolongs the lifetimes of spatially separated electrons and holes and does not compromise their reduction and oxidation potentials.
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Affiliation(s)
- Ji Bian
- Department Key Laboratory of Functional Inorganic Materials Chemistry (Ministry of Education), School of Chemistry and Materials Science, International Joint Research Center and Lab for Catalytic Technology, Heilongjiang University, Harbin, 150080, P. R. China.,School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin, 150001, P. R. China
| | - Ziqing Zhang
- Department Key Laboratory of Functional Inorganic Materials Chemistry (Ministry of Education), School of Chemistry and Materials Science, International Joint Research Center and Lab for Catalytic Technology, Heilongjiang University, Harbin, 150080, P. R. China
| | - Jiannan Feng
- Department Key Laboratory of Functional Inorganic Materials Chemistry (Ministry of Education), School of Chemistry and Materials Science, International Joint Research Center and Lab for Catalytic Technology, Heilongjiang University, Harbin, 150080, P. R. China
| | - Madasamy Thangamuthu
- Department of Chemical Engineering, University College London, Torrington Place, London, WC1E 7JE, UK
| | - Fan Yang
- Department Key Laboratory of Functional Inorganic Materials Chemistry (Ministry of Education), School of Chemistry and Materials Science, International Joint Research Center and Lab for Catalytic Technology, Heilongjiang University, Harbin, 150080, P. R. China
| | - Ling Sun
- Department Key Laboratory of Functional Inorganic Materials Chemistry (Ministry of Education), School of Chemistry and Materials Science, International Joint Research Center and Lab for Catalytic Technology, Heilongjiang University, Harbin, 150080, P. R. China
| | - Zhijun Li
- Department Key Laboratory of Functional Inorganic Materials Chemistry (Ministry of Education), School of Chemistry and Materials Science, International Joint Research Center and Lab for Catalytic Technology, Heilongjiang University, Harbin, 150080, P. R. China
| | - Yang Qu
- Department Key Laboratory of Functional Inorganic Materials Chemistry (Ministry of Education), School of Chemistry and Materials Science, International Joint Research Center and Lab for Catalytic Technology, Heilongjiang University, Harbin, 150080, P. R. China
| | - Dongyan Tang
- School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin, 150001, P. R. China
| | - Zewei Lin
- School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin, 150001, P. R. China
| | - Fuquan Bai
- International Joint Research Laboratory of Nano-Micro Architecture Chemistry, Institute of Theoretical Chemistry and College of Chemistry, Jilin University, Changchun, 130021, P. R. China
| | - Junwang Tang
- Department of Chemical Engineering, University College London, Torrington Place, London, WC1E 7JE, UK
| | - Liqiang Jing
- Department Key Laboratory of Functional Inorganic Materials Chemistry (Ministry of Education), School of Chemistry and Materials Science, International Joint Research Center and Lab for Catalytic Technology, Heilongjiang University, Harbin, 150080, P. R. China
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Zhao W, Wang W, Han T, Wang H, Zhang H, Shi H. Oxygen vacancies boosted charge separation towards enhanced photodegradation ability over 3D/2D Z-scheme BiO1−XBr/Fe2O3 heterostructures. Sep Purif Technol 2021. [DOI: 10.1016/j.seppur.2021.118693] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
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50
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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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