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Huang H, Zhang Z, Xie W, Fan B, Wu C, Jiang R, Huang J, Zhang B, Hou Y, Yu Z. Ultrathin layer TAFC on BiVO 4 with ligand-to-metal charge transfer enhances built-in electric field for boosting photoelectrochemical water oxidation. J Colloid Interface Sci 2024; 668:551-564. [PMID: 38691964 DOI: 10.1016/j.jcis.2024.04.190] [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: 04/01/2024] [Revised: 04/21/2024] [Accepted: 04/26/2024] [Indexed: 05/03/2024]
Abstract
To reveal the mechanism of charge transfer between interfaces of BiVO4-based heterogeneous materials in photoelectrochemical water splitting system, the cocatalyst was grown in situ using tannic acid (TA) as a ligand and Fe and Co ions as metal centers (TAFC), and then uniformly and ultra-thinly coated on BiVO4 to form photoanodes. The results show that the BiVO4/TAFC achieves a superior photocurrent density (4.97 mA cm-2 at 1.23 VRHE). The charge separation and charge injection efficiencies were also significantly higher, 82.0 % and 78.9 %, respectively. From XPS, UPS, KPFM, and density functional theory calculations, Ligand-to-metal charge transfer (LMCT) acts as an electron transport highway in TAFC ultrathin layer to promote the concentration of electrons towards metal center, leading to an increase in the work function, which enhances the built-in electric field and further improves the charge transport. This study demonstrated that the LMCT pathway on TA-metal complexes enhances the built-in electric field in BiVO4/TAFC to promote charge transport and thus enhance water oxidation, providing a new understanding of the performance improvement mechanism for the surface-modified composite photoanodes.
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Affiliation(s)
- Hongcheng Huang
- School of Resources, Environment and Materials, Guangxi University, State Key Laboratory of Featured Metal Materials and Life-cycle Safety for Composite Structures, Nanning 530004, China
| | - Zimu Zhang
- School of Resources, Environment and Materials, Guangxi University, State Key Laboratory of Featured Metal Materials and Life-cycle Safety for Composite Structures, Nanning 530004, China
| | - Wenhui Xie
- School of Resources, Environment and Materials, Guangxi University, State Key Laboratory of Featured Metal Materials and Life-cycle Safety for Composite Structures, Nanning 530004, China
| | - Ben Fan
- School of Resources, Environment and Materials, Guangxi University, State Key Laboratory of Featured Metal Materials and Life-cycle Safety for Composite Structures, Nanning 530004, China
| | - Cheng Wu
- School of Resources, Environment and Materials, Guangxi University, State Key Laboratory of Featured Metal Materials and Life-cycle Safety for Composite Structures, Nanning 530004, China
| | - Ronghua Jiang
- School of Chemical and Environmental Engineering, Shaoguan University, Shaoguan 512005, China
| | - Jun Huang
- School of Civil Engineering and Architecture, Guangxi Minzu University, Nanning 530004, China
| | - Boge Zhang
- School of Resources, Environment and Materials, Guangxi University, State Key Laboratory of Featured Metal Materials and Life-cycle Safety for Composite Structures, Nanning 530004, China
| | - Yanping Hou
- School of Resources, Environment and Materials, Guangxi University, State Key Laboratory of Featured Metal Materials and Life-cycle Safety for Composite Structures, Nanning 530004, China
| | - Zebin Yu
- School of Resources, Environment and Materials, Guangxi University, State Key Laboratory of Featured Metal Materials and Life-cycle Safety for Composite Structures, Nanning 530004, China.
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2
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Wu J, Du X, Li M, Chen H, Hu B, Ding H, Wang N, Jin L, Liu W. Enhanced photoelectrochemical water splitting performance of α-Fe 2O 3 photoanodes through Co-modification with Co single atoms and g-C 3N 4. Chem Sci 2024; 15:12973-12982. [PMID: 39148777 PMCID: PMC11323335 DOI: 10.1039/d4sc03442b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2024] [Accepted: 07/01/2024] [Indexed: 08/17/2024] Open
Abstract
The practical application of α-Fe2O3 in water splitting is hindered by significant charge recombination and slow water oxidation. To address this issue, a CoSAs-g-C3N4/Fe2O3 (CoSAs: cobalt single atoms) photoanode was fabricated in this study through the co-modification of CoSAs and g-C3N4 to enhance photoelectrochemical (PEC) water splitting. The coupling between g-C3N4 and α-Fe2O3 resulted in the formation of a heterojunction, which provided a strong built-in electric field and an additional driving force to mitigate charge recombination. Moreover, g-C3N4 served as a suitable carrier for single atoms, which effectively anchored CoSAs through N/C coordination. The highly dispersed CoSAs provided abundant active sites, which further promoted surface holes extraction and oxidation kinetics, resulting in higher PEC performance and photostability. This study indicates the benefits of these collaborative strategies and provides more efficient designs for solar energy conversion in PEC systems.
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Affiliation(s)
- Juan Wu
- Henan Key Laboratory of Rare Earth Functional Materials, International Joint Research Laboratory for Biomedical Nanomaterials of Henan, Zhoukou Normal University Zhoukou 466001 P. R. China
| | - Xiaodi Du
- College of Chemistry and Chemical Engineering, Zhoukou Normal University Zhoukou 466001 P. R. China
| | - Mingjie Li
- Library, Zhoukou Normal University Zhoukou 466001 P. R. China
| | - Hongyu Chen
- Henan Key Laboratory of Rare Earth Functional Materials, International Joint Research Laboratory for Biomedical Nanomaterials of Henan, Zhoukou Normal University Zhoukou 466001 P. R. China
| | - Bin Hu
- Henan Key Laboratory of Rare Earth Functional Materials, International Joint Research Laboratory for Biomedical Nanomaterials of Henan, Zhoukou Normal University Zhoukou 466001 P. R. China
| | - Hongwei Ding
- Henan Key Laboratory of Rare Earth Functional Materials, International Joint Research Laboratory for Biomedical Nanomaterials of Henan, Zhoukou Normal University Zhoukou 466001 P. R. China
| | - Nannan Wang
- Henan Key Laboratory of Rare Earth Functional Materials, International Joint Research Laboratory for Biomedical Nanomaterials of Henan, Zhoukou Normal University Zhoukou 466001 P. R. China
| | - Lin Jin
- Henan Key Laboratory of Rare Earth Functional Materials, International Joint Research Laboratory for Biomedical Nanomaterials of Henan, Zhoukou Normal University Zhoukou 466001 P. R. China
| | - Weisheng 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
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3
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Liu M, Yang W, Xiao R, Qin Y, Tan R, Chen Y, Gu W, Hu L, Lin Y, Zhu C. Anisotropic Dual S-Scheme Heterojunctions Mimic Natural Photosynthetic System for Boosting Photoelectric Response. Angew Chem Int Ed Engl 2024; 63:e202407481. [PMID: 38840295 DOI: 10.1002/anie.202407481] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2024] [Revised: 05/29/2024] [Accepted: 06/05/2024] [Indexed: 06/07/2024]
Abstract
The design of heterojunctions that mimic natural photosynthetic systems holds great promise for enhancing photoelectric response. However, the limited interfacial space charge layer (SCL) often fails to provide sufficient driving force for the directional migration of inner charge carriers. Drawing inspiration from the electron transport chain (ETC) in natural photosynthesis system, we developed a novel anisotropic dual S-scheme heterojunction artificial photosynthetic system composed of Bi2O3-BiOBr-AgI for the first time, with Bi2O3 and AgI selectively distributed along the bicrystal facets of BiOBr. Compared to traditional semiconductors, the anisotropic carrier migration in BiOBr overcomes the recombination resulting from thermodynamic diffusion, thereby establishing a potential ETC for the directional migration of inner charge carriers. Importantly, this pioneering bioinspired design overcomes the limitations imposed by the limited distribution of SCL in heterojunctions, resulting in a remarkable 55-fold enhancement in photoelectric performance. Leveraging the etching of thiols on Ag-based materials, this dual S-scheme heterojunction is further employed in the construction of photoelectrochemical sensors for the detection of acetylcholinesterase and organophosphorus pesticides.
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Affiliation(s)
- Mingwang Liu
- State Key Laboratory of Green Pesticide, International Joint Research Center for Intelligent Biosensing Technology and Health, College of Chemistry, Central China Normal University, Wuhan, 430079, P. R. China
| | - Wenhong Yang
- State Key Laboratory of Green Pesticide, International Joint Research Center for Intelligent Biosensing Technology and Health, College of Chemistry, Central China Normal University, Wuhan, 430079, P. R. China
| | - Runshi Xiao
- State Key Laboratory of Green Pesticide, International Joint Research Center for Intelligent Biosensing Technology and Health, College of Chemistry, Central China Normal University, Wuhan, 430079, P. R. China
- Hubei Key Laboratory of Plasma Chemistry and Advanced Materials, Hubei Engineering Technology Research Center of Optoelectronic and New Energy Materials, Wuhan Institute of Technology, Wuhan, 430205, P. R. China
| | - Ying Qin
- State Key Laboratory of Green Pesticide, International Joint Research Center for Intelligent Biosensing Technology and Health, College of Chemistry, Central China Normal University, Wuhan, 430079, P. R. China
| | - Rong Tan
- State Key Laboratory of Green Pesticide, International Joint Research Center for Intelligent Biosensing Technology and Health, College of Chemistry, Central China Normal University, Wuhan, 430079, P. R. China
| | - Yuanxing Chen
- State Key Laboratory of Green Pesticide, International Joint Research Center for Intelligent Biosensing Technology and Health, College of Chemistry, Central China Normal University, Wuhan, 430079, P. R. China
- Hubei Key Laboratory of Plasma Chemistry and Advanced Materials, Hubei Engineering Technology Research Center of Optoelectronic and New Energy Materials, Wuhan Institute of Technology, Wuhan, 430205, P. R. China
| | - Wenling Gu
- State Key Laboratory of Green Pesticide, International Joint Research Center for Intelligent Biosensing Technology and Health, College of Chemistry, Central China Normal University, Wuhan, 430079, P. R. China
| | - Liuyong Hu
- Hubei Key Laboratory of Plasma Chemistry and Advanced Materials, Hubei Engineering Technology Research Center of Optoelectronic and New Energy Materials, Wuhan Institute of Technology, Wuhan, 430205, P. R. China
| | - Yuehe Lin
- School of Mechanical and Materials Engineering, Washington State University, Pullman, WA99164, USA
| | - Chengzhou Zhu
- State Key Laboratory of Green Pesticide, International Joint Research Center for Intelligent Biosensing Technology and Health, College of Chemistry, Central China Normal University, Wuhan, 430079, P. R. China
- College of Material Chemistry and Chemical Engineering, Key Laboratory of Organosilicon Chemistry and Material Technology, Ministry of Education, Hangzhou Normal University, Hangzhou, 311121, P. R. China
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Shao B, Meng L, Chen F, Wang J, Zhai W, Li L. Ultrasound Induces Local Disorder of FeOOH on CdIn 2S 4 Photoanode for High Efficiency Photoelectrochemical Water Oxidation. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024; 20:e2401143. [PMID: 38534196 DOI: 10.1002/smll.202401143] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/13/2024] [Revised: 03/09/2024] [Indexed: 03/28/2024]
Abstract
The regulation of the crystal structure of oxygen evolution cocatalyst (OEC) is a promising strategy for enhancing the photoelectrochemical efficiency of photoanodes. However, the prevailing regulating approach typically requires a multistep procedure, presenting a significant challenge for maintaining the structural integrity and performance of the photoanode. Herein, FeOOH with a local disordered structure is directly grown on a CdIn2S4 (CIS) photoanode via a simple and mild sonochemical approach. By modulating the localized supersaturation of Ni ions, ultrasonic cavitation induces Ni ions to participate in the nucleation and growth of FeOOH clusters to cause local disorder of FeOOH. Consequently, the local disordered FeOOH facilitates the exposure of additional active sites, boosting OER kinetics and extending charge carrier lifetimes. Finally, the optimal photoanode reaches 4.52 mA cm-2 at 1.23 VRHE, and the onset potential shifts negatively by 330 mV, exhibiting excellent performance compared with that of other metal sulfide-based photoelectrodes reported thus far. This work provides a mild and controllable sonochemical method for regulating the phase structure of OECs to construct high-performance photoanodes.
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Affiliation(s)
- Bo Shao
- MOE Key Laboratory of Materials Physics and Chemistry under Extraordinary Conditions, School of Physical Science and Technology, Northwestern Polytechnical University, Xi'an, 710072, P. R. China
| | - Linxing Meng
- Jiangsu Key Laboratory of Thin Films, Center for Energy Conversion Materials & Physics (CECMP), School of Physical Science and Technology, Soochow University, Suzhou, 215006, P. R. China
- Jiangsu Key Laboratory of Advanced Negative Carbon Technologies, Soochow University, Suzhou, 215006, P. R. China
| | - Fang Chen
- MOE Key Laboratory of Materials Physics and Chemistry under Extraordinary Conditions, School of Physical Science and Technology, Northwestern Polytechnical University, Xi'an, 710072, P. R. China
| | - Jianyuan Wang
- MOE Key Laboratory of Materials Physics and Chemistry under Extraordinary Conditions, School of Physical Science and Technology, Northwestern Polytechnical University, Xi'an, 710072, P. R. China
| | - Wei Zhai
- MOE Key Laboratory of Materials Physics and Chemistry under Extraordinary Conditions, School of Physical Science and Technology, Northwestern Polytechnical University, Xi'an, 710072, P. R. China
| | - Liang Li
- Jiangsu Key Laboratory of Thin Films, Center for Energy Conversion Materials & Physics (CECMP), School of Physical Science and Technology, Soochow University, Suzhou, 215006, P. R. China
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5
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Zabara MA, Ölmez B, Buldu‐Akturk M, Yarar Kaplan B, Kırlıoğlu AC, Alkan Gürsel S, Ozkan M, Ozkan CS, Yürüm A. Photoelectrocatalytic Hydrogen Generation: Current Advances in Materials and Operando Characterization. GLOBAL CHALLENGES (HOBOKEN, NJ) 2024; 8:2400011. [PMID: 39130676 PMCID: PMC11316250 DOI: 10.1002/gch2.202400011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/10/2024] [Revised: 06/10/2024] [Indexed: 08/13/2024]
Abstract
Photoelectrochemical (PEC) hydrogen generation is a promising technology for green hydrogen production yet faces difficulties in achieving stability and efficiency. The scientific community is pushing toward the development of new electrode materials and a better understanding of the underlying reactions and degradation mechanisms. Advances in photocatalytic materials are being pursued through the development of heterojunctions, tailored crystal nanostructures, doping, and modification of solid-solid and solid-electrolyte interfaces. Operando and in situ techniques are utilized to deconvolute the charge transfer mechanisms and degradation pathways. In this review, both materials development and Operando characterization are covered for advancing PEC technologies. The recent advances made in the PEC materials are first reviewed including the applied improvement strategies for transition metal oxides, nitrites, chalcogenides, Si, and group III-V semiconductor materials. The efficiency, stability, scalability, and electrical conductivity of the aforementioned materials along with the improvement strategies are compared. Next, the Operando characterization methods and cite selected studies applied for PEC electrodes are described. Operando studies are very successful in elucidating the reaction mechanisms, degradation pathways, and charge transfer phenomena in PEC electrodes. Finally, the standing challenges and the potential opportunities are discussed by providing recommendations for designing more efficient and electrochemically stable PEC electrodes.
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Affiliation(s)
| | - Burak Ölmez
- Faculty of Engineering and Natural SciencesSabanci UniversityIstanbul34956Türkiye
| | - Merve Buldu‐Akturk
- Faculty of Engineering and Natural SciencesSabanci UniversityIstanbul34956Türkiye
| | - Begüm Yarar Kaplan
- Sabanci University SUNUM Nanotechnology Research CenterIstanbul34956Türkiye
| | - Ahmet Can Kırlıoğlu
- Faculty of Engineering and Natural SciencesSabanci UniversityIstanbul34956Türkiye
| | - Selmiye Alkan Gürsel
- Sabanci University SUNUM Nanotechnology Research CenterIstanbul34956Türkiye
- Faculty of Engineering and Natural SciencesSabanci UniversityIstanbul34956Türkiye
| | - Mihrimah Ozkan
- Department of Electrical and Computer EngineeringUniversity of CaliforniaRiversideCA02521USA
| | - Cengiz Sinan Ozkan
- Department of Mechanical EngineeringUniversity of CaliforniaRiversideCA02521USA
| | - Alp Yürüm
- Sabanci University SUNUM Nanotechnology Research CenterIstanbul34956Türkiye
- Faculty of Engineering and Natural SciencesSabanci UniversityIstanbul34956Türkiye
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6
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Feng C, Liu Z, Ju H, Mavrič A, Valant M, Fu J, Zhang B, Li Y. Understanding the in-situ transformation of Cu xO interlayers to increase the water splitting efficiency in NiO/n-Si photoanodes. Nat Commun 2024; 15:6436. [PMID: 39085223 PMCID: PMC11291650 DOI: 10.1038/s41467-024-50893-x] [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: 10/31/2023] [Accepted: 07/24/2024] [Indexed: 08/02/2024] Open
Abstract
The buried interface tens of nanometers beneath the solid-liquid junction is crucial for photocarrier extraction, influencing the overall efficiency of photoelectrochemical devices. Precise characterization of the interfacial properties is essential for device optimization but remains challenging. Here, we directly probe the in situ transformation of a CuxO interlayer at the NiO/n-Si interface by hard X-ray photoelectron spectroscopy. It is found that Cu(I) in the CuxO interlayer gradually transforms to Cu(II) with air exposure, forming an energetically more favorable interface and improving photoanode's efficiency. Based on this finding, a reactive e-beam evaporation process is developed for the direct deposition of a CuO interlayer, achieving a half-cell solar-to-hydrogen efficiency of 4.56% for the optimized NiO/CuO/n-Si heterojunction photoanode. Our results highlight the importance of precision characterization of interfacial properties with advanced hard X-ray photoelectron spectroscopy in guiding the design of efficient solar water-splitting devices.
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Affiliation(s)
- Chao Feng
- Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu, China
- Key Laboratory of Quantum Physics and Photonic Quantum Information, Ministry of Education, University of Electronic Science and Technology of China, Chengdu, China
| | - Zhi Liu
- Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu, China
| | - Huanxin Ju
- PHI China Analytical Laboratory, Core Tech Integrated Limited, Nanjing, China
| | - Andraž Mavrič
- Materials Research Laboratory, University of Nova Gorica, Nova Gorica, Slovenia
| | - Matjaz Valant
- Materials Research Laboratory, University of Nova Gorica, Nova Gorica, Slovenia
| | - Jie Fu
- Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu, China
| | - Beibei Zhang
- Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu, China
- Key Laboratory of Quantum Physics and Photonic Quantum Information, Ministry of Education, University of Electronic Science and Technology of China, Chengdu, China
| | - Yanbo Li
- Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu, China.
- Key Laboratory of Quantum Physics and Photonic Quantum Information, Ministry of Education, University of Electronic Science and Technology of China, Chengdu, China.
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7
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Wang J, Sun J, Liu Y, Zhang X, Cheng K, Chen Y, Zhou F, Luo J, Li T, Guo J, Xu B. The CuSCN layer between BiVO 4 and NiFeO x for facilitating photogenerated carrier transfer and water oxidation kinetics. J Colloid Interface Sci 2024; 666:57-65. [PMID: 38583210 DOI: 10.1016/j.jcis.2024.04.017] [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: 02/04/2024] [Revised: 04/02/2024] [Accepted: 04/02/2024] [Indexed: 04/09/2024]
Abstract
Modification of oxygen evolution co-catalyst (OEC) on the surface of bismuth vanadate (BiVO4) can effectively improve the kinetics of water oxidation, but it is still limited by the small hole extraction driving force at the BiVO4/OEC interface. Modulating the BiVO4/OEC interface with a hole transfer layer (HTL) is expected to facilitate hole transport from BiVO4 to the OEC surface. Herein, a copper(I) thiocyanate (CuSCN) HTL is inserted between BiVO4 and NiFeOx OEC to create BiVO4/CuSCN/NiFeOx photoanode, resulting in a significant enhancement of photoelectrochemical (PEC) water splitting performance. From electrochemical analyses and density functional theory (DFT) simulations, the markedly enhanced PEC performance is attributed to the insertion of CuSCN as an HTL, which promotes the extraction of holes from BiVO4 surface and boosts the water oxidation kinetics. The optimal photoanode achieves a photocurrent density of 5.6 mA cm-2 at 1.23 V versus the reversible hydrogen electrode (vs. RHE) and an impressive charge separation efficiency of 96.2 %. This work offers valuable insights into the development of advanced photoanodes for solar energy conversion and emphasizes the importance of selecting an appropriate HTL to mitigate recombination at the BiVO4/OEC interface.
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Affiliation(s)
- Jingkun Wang
- College of Materials Science and Engineering, Taiyuan University of Technology, Taiyuan 030024, China
| | - Jidong Sun
- College of Materials Science and Engineering, Taiyuan University of Technology, Taiyuan 030024, China
| | - Yuliang Liu
- College of Materials Science and Engineering, Taiyuan University of Technology, Taiyuan 030024, China
| | - Xun Zhang
- College of Materials Science and Engineering, Taiyuan University of Technology, Taiyuan 030024, China
| | - Kai Cheng
- College of Materials Science and Engineering, Taiyuan University of Technology, Taiyuan 030024, China
| | - Yupeng Chen
- College of Materials Science and Engineering, Taiyuan University of Technology, Taiyuan 030024, China
| | - Fangzhou Zhou
- College of Materials Science and Engineering, Taiyuan University of Technology, Taiyuan 030024, China
| | - Jujie Luo
- College of Materials Science and Engineering, Taiyuan University of Technology, Taiyuan 030024, China
| | - Tianbao Li
- College of Materials Science and Engineering, Taiyuan University of Technology, Taiyuan 030024, China; Shanxi-Zheda Institute of Advanced Materials and Chemical Engineering, Taiyuan University of Technology, Taiyuan 030032, China.
| | - Junjie Guo
- Key Laboratory of Interface Science and Engineering in Advanced Materials, Ministry of Education, Taiyuan University of Technology, Taiyuan 030024, China.
| | - Bingshe Xu
- Shanxi-Zheda Institute of Advanced Materials and Chemical Engineering, Taiyuan University of Technology, Taiyuan 030032, China
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8
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Liu X, Liu Y, Jin M, Xu C, Tian Y, Zhou M, Wang W, Li G, Hou Z, Chen L. Construction of N-doped carbon encapsulated Mn 2O 3/MnO heterojunction for enhanced lithium storage performance. J Colloid Interface Sci 2024; 665:752-763. [PMID: 38554465 DOI: 10.1016/j.jcis.2024.03.182] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2024] [Revised: 03/13/2024] [Accepted: 03/27/2024] [Indexed: 04/01/2024]
Abstract
Owing to high theoretical capacity, low cost and abundant availability, manganese oxides are widely viewed as promising anodes for lithium-ion batteries (LIBs). Nonetheless, their practical application is significantly hindered by poor electrical conductivity, sluggish reaction kinetics and substantial volume change. In this work, an ingenious polypyrrole encapsulation followed by pyrolysis strategy is proposed to produce N-doped carbon encapsulated Mn2O3/MnO heterojunction (Mn2O3/MnO@NC) by using mechanically ground Mn3O4/C3N4 mixture as the precursor. The results show that the selection of precursor plays a pivotal role in the successful preparation of Mn2O3/MnO@NC hybrid. It is revealed that the uniform encapsulation by N-doped carbon significantly enhances the conductivity and structural stability of the final product. Concurrently, the Mn2O3/MnO heterojunction within the resultant hybrid exhibits a unique quantum-dot size, which effectively shortens ion transport pathways and exposes the active sites for lithium storage. Additionally, experimental observations and theoretical calculations demonstrate that the built-in electric fields generated at the interfaces of Mn2O3/MnO heterojunction accelerate the charge transfer and ion diffusion, thereby enhancing the electrochemical reaction kinetics. As a result, the Mn2O3/MnO@NC hybrid displays much enhanced lithium storage performance. Evidently, our work offers a good guidance for the design and synthesis of advanced transition metal oxide/carbon anodes for LIBs.
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Affiliation(s)
- Xu Liu
- Key Laboratory of Hunan Province for Advanced Carbon-based Functional Materials, School of Chemistry and Chemical Engineering, Hunan Institute of Science and Technology, Yueyang 414006, Hunan, China
| | - Yanping Liu
- Key Laboratory of Hunan Province for Advanced Carbon-based Functional Materials, School of Chemistry and Chemical Engineering, Hunan Institute of Science and Technology, Yueyang 414006, Hunan, China
| | - Minghao Jin
- Key Laboratory of Hunan Province for Advanced Carbon-based Functional Materials, School of Chemistry and Chemical Engineering, Hunan Institute of Science and Technology, Yueyang 414006, Hunan, China
| | - Chenxi Xu
- College of Materials Science and Engineering, Central South University of Forestry and Technology, Changsha 410004, Hunan, China
| | - Yushan Tian
- Key Laboratory of Hunan Province for Advanced Carbon-based Functional Materials, School of Chemistry and Chemical Engineering, Hunan Institute of Science and Technology, Yueyang 414006, Hunan, China
| | - Miao Zhou
- Key Laboratory of Hunan Province for Advanced Carbon-based Functional Materials, School of Chemistry and Chemical Engineering, Hunan Institute of Science and Technology, Yueyang 414006, Hunan, China
| | - Wei Wang
- Key Laboratory of Hunan Province for Advanced Carbon-based Functional Materials, School of Chemistry and Chemical Engineering, Hunan Institute of Science and Technology, Yueyang 414006, Hunan, China
| | - Gangyong Li
- Key Laboratory of Hunan Province for Advanced Carbon-based Functional Materials, School of Chemistry and Chemical Engineering, Hunan Institute of Science and Technology, Yueyang 414006, Hunan, China
| | - Zhaohui Hou
- Key Laboratory of Hunan Province for Advanced Carbon-based Functional Materials, School of Chemistry and Chemical Engineering, Hunan Institute of Science and Technology, Yueyang 414006, Hunan, China
| | - Liang Chen
- Key Laboratory of Hunan Province for Advanced Carbon-based Functional Materials, School of Chemistry and Chemical Engineering, Hunan Institute of Science and Technology, Yueyang 414006, Hunan, China.
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9
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Liu X, Zhang X, Chen M, Zhang X, Cao K. Fluoride Ions Post-Treatment Regulates Interfacial Charge Separation and Transport to Promote Solar Water Splitting of Bismuth Vanadate. CHEMSUSCHEM 2024:e202400266. [PMID: 38777790 DOI: 10.1002/cssc.202400266] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/06/2024] [Revised: 05/13/2024] [Accepted: 05/22/2024] [Indexed: 05/25/2024]
Abstract
Herein, we propose a simple and effective fluoride (F-) ions post-treatment method to improve the solar water splitting performance of monoclinic BiVO4 (abbreviated as BVO). The surface modification of BVO with functional F- ions not only facilitates the transfer and separation efficiency of carriers at the electrode/electrolyte interface but also promotes the adsorption and activation of water, resulting in a photocurrent of 3.2 mA/cm2 at a bias voltage of 1.2 VRHE. Furthermore, the transfer and separation of carriers in the bulk and on the surface are further regulated by the oxygen vacancies induced by F- ions, thereby enhancing the PEC water splitting performance of BVO. Notably, the experimental findings demonstrate that the introduce of F- ions into the KBi electrolyte enhances the photo-charging process of BVO. Specifically, at a bias voltage of 0.6 VRHE, the BVO-0.12F sample exhibits a stable photocurrent of 1.2 mA/cm2, which is twice as high as that of the initial BVO sample. Remarkably, our study unveils that the addition of F- ions into the KBi electrolyte solution plays a pivotal role in facilitating the separation of charge carriers and promoting interfacial charge transport. Consequently, this further leads to a substantial enhancement in the solar water splitting performance for BVO-0.12F photoanode.
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Affiliation(s)
- Xiaogang Liu
- College of Chemistry and Chemical Engineering, Xinyang Normal University, Xinyang, 464000, China
- Henan Province Key Laboratory of Utilization of Non-Metallic Mineral in the South of Henan, Xinyang Normal University, Xinyang, 464000, China
| | - Xin Zhang
- College of Chemistry and Chemical Engineering, Xinyang Normal University, Xinyang, 464000, China
| | - Mengyu Chen
- College of Chemistry and Chemical Engineering, Xinyang Normal University, Xinyang, 464000, China
| | - Xing Zhang
- College of Chemistry and Chemical Engineering, Xinyang Normal University, Xinyang, 464000, China
- Henan Province Key Laboratory of Utilization of Non-Metallic Mineral in the South of Henan, Xinyang Normal University, Xinyang, 464000, China
| | - Kangzhe Cao
- College of Chemistry and Chemical Engineering, Xinyang Normal University, Xinyang, 464000, China
- Henan Province Key Laboratory of Utilization of Non-Metallic Mineral in the South of Henan, Xinyang Normal University, Xinyang, 464000, China
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10
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Kim S, Oh D, Jang JW. Unassisted Photoelectrochemical H 2O 2 Production with In Situ Glycerol Valorization Using α-Fe 2O 3. NANO LETTERS 2024; 24:5146-5153. [PMID: 38526525 DOI: 10.1021/acs.nanolett.3c05136] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/26/2024]
Abstract
Photoelectrochemical (PEC) H2O2 production via two-electron O2 reduction is promising for H2O2 production without emitting CO2. For PEC H2O2 production, α-Fe2O3 is an ideal semiconductor owing to its earth abundance, superior stability in water, and an appropriate band gap for efficient solar light utilization. Moreover, its conduction band is suitable for O2 reduction to produce H2O2. However, a significant overpotential for water oxidation is required due to the poor surface properties of α-Fe2O3. Thus, unassisted solar H2O2 production is not yet possible. Herein, we demonstrate unassisted PEC H2O2 production using α-Fe2O3 for the first time by applying glycerol oxidation, which requires less bias compared with water oxidation. We obtain maximum Faradaic efficiencies of 96.89 ± 0.6% and 100% for glycerol oxidation and H2O2 production, respectively, with high stability for 25 h. Our results indicate that unassisted and stable PEC H2O2 production is feasible with in situ glycerol valorization using the α-Fe2O3 photoanode.
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Affiliation(s)
- Sarang Kim
- School of Energy and Chemical Engineering, Ulsan National Institute of Science and Technology (UNIST), 50 UNIST-gil, Ulsan 44919, Republic of Korea
| | - Dongrak Oh
- School of Energy and Chemical Engineering, Ulsan National Institute of Science and Technology (UNIST), 50 UNIST-gil, Ulsan 44919, Republic of Korea
| | - Ji-Wook Jang
- School of Energy and Chemical Engineering, Ulsan National Institute of Science and Technology (UNIST), 50 UNIST-gil, Ulsan 44919, Republic of Korea
- Graduate School of Carbon Neutrality, UNIST, Ulsan 44919, Republic of Korea
- Emergent Hydrogen Technology R&D Centre, UNIST, Ulsan 44919, Republic of Korea
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11
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Zhu Z, Daboczi M, Chen M, Xuan Y, Liu X, Eslava S. Ultrastable halide perovskite CsPbBr 3 photoanodes achieved with electrocatalytic glassy-carbon and boron-doped diamond sheets. Nat Commun 2024; 15:2791. [PMID: 38555394 PMCID: PMC10981704 DOI: 10.1038/s41467-024-47100-2] [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: 10/20/2023] [Accepted: 03/13/2024] [Indexed: 04/02/2024] Open
Abstract
Halide perovskites exhibit exceptional optoelectronic properties for photoelectrochemical production of solar fuels and chemicals but their instability in aqueous electrolytes hampers their application. Here we present ultrastable perovskite CsPbBr3-based photoanodes achieved with both multifunctional glassy carbon and boron-doped diamond sheets coated with Ni nanopyramids and NiFeOOH. These perovskite photoanodes achieve record operational stability in aqueous electrolytes, preserving 95% of their initial photocurrent density for 168 h of continuous operation with the glassy carbon sheets and 97% for 210 h with the boron-doped diamond sheets, due to the excellent mechanical and chemical stability of glassy carbon, boron-doped diamond, and nickel metal. Moreover, these photoanodes reach a low water-oxidation onset potential close to +0.4 VRHE and photocurrent densities close to 8 mA cm-2 at 1.23 VRHE, owing to the high conductivity of glassy carbon and boron-doped diamond and the catalytic activity of NiFeOOH. The applied catalytic, protective sheets employ only earth-abundant elements and straightforward fabrication methods, engineering a solution for the success of halide perovskites in stable photoelectrochemical cells.
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Affiliation(s)
- Zhonghui Zhu
- Department of Chemical Engineering and Centre for Processable Electronics, Imperial College London, London, SW7 2AZ, UK
- School of Energy and Power Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing, 210016, China
| | - Matyas Daboczi
- Department of Chemical Engineering and Centre for Processable Electronics, Imperial College London, London, SW7 2AZ, UK
| | - Minzhi Chen
- Department of Chemical Engineering and Centre for Processable Electronics, Imperial College London, London, SW7 2AZ, UK
| | - Yimin Xuan
- School of Energy and Power Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing, 210016, China.
| | - Xianglei Liu
- School of Energy and Power Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing, 210016, China
| | - Salvador Eslava
- Department of Chemical Engineering and Centre for Processable Electronics, Imperial College London, London, SW7 2AZ, UK.
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12
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Huang H, Wang J, Liu Y, Zhao M, Zhang N, Hu Y, Fan F, Feng J, Li Z, Zou Z. Stacking textured films on lattice-mismatched transparent conducting oxides via matched Voronoi cell of oxygen sublattice. NATURE MATERIALS 2024; 23:383-390. [PMID: 38062169 DOI: 10.1038/s41563-023-01746-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/22/2022] [Accepted: 10/31/2023] [Indexed: 12/24/2023]
Abstract
Transparent conducting oxides are a critical component in modern (opto)electronic devices and solar energy conversion systems, and forming textured functional films on them is highly desirable for property manipulation and performance optimization. However, technologically important materials show varied crystal structures, making it difficult to establish coherent interfaces and consequently the oriented growth of these materials on transparent conducting oxides. Here, taking lattice-mismatched hexagonal α-Fe2O3 and tetragonal fluorine-doped tin oxide as the example, atomic-level investigations reveal that a coherent ordered structure forms at their interface, and via an oxygen-mediated dimensional and chemical-matching manner, that is, matched Voronoi cells of oxygen sublattices, [110]-oriented α-Fe2O3 films develop on fluorine-doped tin oxide. Further measurements of charge transport characteristics and photoelectronic effects highlight the importance and advantages of coherent interfaces and well-defined orientation in textured α-Fe2O3 films. Textured growth of lattice-mismatched oxides, including spinel Co3O4, fluorite CeO2, perovskite BiFeO3 and even halide perovskite Cs2AgBiBr6, on fluorine-doped tin oxide is also achieved, offering new opportunities to develop high-performance transparent-conducting-oxide-supported devices.
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Affiliation(s)
- Huiting Huang
- Collaborative Innovation Center of Advanced Microstructures, National Laboratory of Solid State Microstructures, College of Engineering and Applied Sciences, Nanjing University, Nanjing, People's Republic of China
| | - Jun Wang
- Collaborative Innovation Center of Advanced Microstructures, National Laboratory of Solid State Microstructures, College of Engineering and Applied Sciences, Nanjing University, Nanjing, People's Republic of China
- Jiangsu Key Laboratory for Nano Technology, School of Physics, Nanjing University, Nanjing, People's Republic of China
| | - Yong Liu
- State Key Laboratory of Catalysis, Dalian National Laboratory for Clean Energy, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, People's Republic of China
| | - Minyue Zhao
- Collaborative Innovation Center of Advanced Microstructures, National Laboratory of Solid State Microstructures, College of Engineering and Applied Sciences, Nanjing University, Nanjing, People's Republic of China
| | - Ningsi Zhang
- Collaborative Innovation Center of Advanced Microstructures, National Laboratory of Solid State Microstructures, College of Engineering and Applied Sciences, Nanjing University, Nanjing, People's Republic of China
| | - Yingfei Hu
- Collaborative Innovation Center of Advanced Microstructures, National Laboratory of Solid State Microstructures, College of Engineering and Applied Sciences, Nanjing University, Nanjing, People's Republic of China
- Jiangsu Key Laboratory for Nano Technology, School of Physics, Nanjing University, Nanjing, People's Republic of China
| | - Fengtao Fan
- State Key Laboratory of Catalysis, Dalian National Laboratory for Clean Energy, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, People's Republic of China
| | - Jianyong Feng
- Collaborative Innovation Center of Advanced Microstructures, National Laboratory of Solid State Microstructures, College of Engineering and Applied Sciences, Nanjing University, Nanjing, People's Republic of China.
| | - Zhaosheng Li
- Collaborative Innovation Center of Advanced Microstructures, National Laboratory of Solid State Microstructures, College of Engineering and Applied Sciences, Nanjing University, Nanjing, People's Republic of China.
- Jiangsu Key Laboratory for Nano Technology, School of Physics, Nanjing University, Nanjing, People's Republic of China.
| | - Zhigang Zou
- Collaborative Innovation Center of Advanced Microstructures, National Laboratory of Solid State Microstructures, College of Engineering and Applied Sciences, Nanjing University, Nanjing, People's Republic of China
- Jiangsu Key Laboratory for Nano Technology, School of Physics, Nanjing University, Nanjing, People's Republic of China
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13
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Pan F, Long L, Li Z, Yan S, Wang L, Lv G, Zhang J, Chen J, Liang G, Wang D. Substitutional Cd Dopant as Photohole Transfer Mediator Boosting Photoelectrochemical Solar Energy Conversion of 2D Cd-ZnIn 2 S 4 Photoanode. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024; 20:e2304846. [PMID: 37910867 DOI: 10.1002/smll.202304846] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/08/2023] [Revised: 09/24/2023] [Indexed: 11/03/2023]
Abstract
Fast recombination dynamics of photocarriers competing with sluggish surface photohole oxidation kinetics severely restricts the photoelectrochemical (PEC) conversion efficiency of photoanode. Here, a defect engineering strategy is developed to regulate photohole transfer and interfacial injection dynamics of 2D ZnIn2 S4 (ZIS). Via selectively introducing substitutional Cd dopant at Zn sites of the ZIS basal plane, energy band structure and surface electrochemical activity are successfully modulated in the Cd-doped ZIS (Cd-ZIS) nanosheet array photoanode. Comprehensive characterizations manifest that a shallow acceptor level induced by Cd doping and superior electrochemical activity make surface Cd dopants simultaneously act as capture centers and active sites to mediate photohole dynamics at the reaction interface. In depth photocarrier dynamics analysis demonstrates that highly efficient photohole capture of Cd dopants brings about effective space separation of photocarriers and acceleration of surface reaction kinetics. Therefore, the optimum 2D Cd-ZIS achieves excellent PEC solar energy conversion efficiency with a photocurrent density of 5.1 mA cm-2 at 1.23 VRHE and a record of applied bias photon-to-current efficiency (ABPE) of 3.0%. This work sheds light on a microstructure design strategy to effectively regulate photohole dynamics for the next-generation semiconducting PEC photoanodes.
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Affiliation(s)
- Feng Pan
- Micro-Electronics Research Institute and School of Electronics and Information, Hangzhou Dianzi University, 1158, 2nd Street, Baiyang Street, Hangzhou, 310018, China
| | - Liyuan Long
- Micro-Electronics Research Institute and School of Electronics and Information, Hangzhou Dianzi University, 1158, 2nd Street, Baiyang Street, Hangzhou, 310018, China
- Key Laboratory of Excited-State Materials of Zhejiang Province, Department of Chemistry, Zhejiang University, Hangzhou, 310027, China
| | - Zhenyu Li
- Micro-Electronics Research Institute and School of Electronics and Information, Hangzhou Dianzi University, 1158, 2nd Street, Baiyang Street, Hangzhou, 310018, China
| | - Shiming Yan
- Micro-Electronics Research Institute and School of Electronics and Information, Hangzhou Dianzi University, 1158, 2nd Street, Baiyang Street, Hangzhou, 310018, China
| | - Lei Wang
- Hubei Key Laboratory of Low Dimensional Optoelectronic Materials and Devices, Hubei University of Arts and Science, 441053, 296 Longzhong Road, Xiangyang, 441053, China
| | - Gangyang Lv
- Micro-Electronics Research Institute and School of Electronics and Information, Hangzhou Dianzi University, 1158, 2nd Street, Baiyang Street, Hangzhou, 310018, China
| | - Junjun Zhang
- Micro-Electronics Research Institute and School of Electronics and Information, Hangzhou Dianzi University, 1158, 2nd Street, Baiyang Street, Hangzhou, 310018, China
| | - Jiahui Chen
- Micro-Electronics Research Institute and School of Electronics and Information, Hangzhou Dianzi University, 1158, 2nd Street, Baiyang Street, Hangzhou, 310018, China
| | - Guijie Liang
- Hubei Key Laboratory of Low Dimensional Optoelectronic Materials and Devices, Hubei University of Arts and Science, 441053, 296 Longzhong Road, Xiangyang, 441053, China
| | - Dunhui Wang
- Micro-Electronics Research Institute and School of Electronics and Information, Hangzhou Dianzi University, 1158, 2nd Street, Baiyang Street, Hangzhou, 310018, China
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14
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Zhen C, Chen X, Chen R, Fan F, Xu X, Kang Y, Guo J, Wang L, Lu GQM, Domen K, Cheng HM, Liu G. Liquid metal-embraced photoactive films for artificial photosynthesis. Nat Commun 2024; 15:1672. [PMID: 38395923 PMCID: PMC10891066 DOI: 10.1038/s41467-024-46073-6] [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: 10/27/2023] [Accepted: 02/13/2024] [Indexed: 02/25/2024] Open
Abstract
The practical applications of solar-driven water splitting pivot on significant advances that enable scalable production of robust photoactive films. Here, we propose a proof-of-concept for fabricating robust photoactive films by a particle-implanting technique (PiP) which embeds semiconductor photoabsorbers in the liquid metal. The strong semiconductor/metal interaction enables resulting films efficient collection of photogenerated charges and superior photoactivity. A photoanode of liquid-metal embraced BiVO4 can stably operate over 120 h and retain ~ 70% of activity when scaled from 1 to 64 cm2. Furthermore, a Z-scheme photocatalyst film of liquid-metal embraced BiVO4 and Rh-doped SrTiO3 particles can drive overall water splitting under visible light, delivering an activity 2.9 times higher than that of the control film with gold support and a 110 h stability. These results demonstrate the advantages of the PiP technique in constructing robust and efficient photoactive films for artificial photosynthesis.
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Affiliation(s)
- Chao Zhen
- Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, 72 Wenhua Road, Shenyang, 110016, China
| | - Xiangtao Chen
- Key Laboratory for Anisotropy and Texture of Materials (Ministry of Education), Northeastern University, Shenyang, Liaoning, 110819, China
| | - Ruotian Chen
- State Key Laboratory of Catalysis, Dalian National Laboratory for Clean Energy, iChEM, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, China
| | - Fengtao Fan
- State Key Laboratory of Catalysis, Dalian National Laboratory for Clean Energy, iChEM, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, China
| | - Xiaoxiang Xu
- School of Chemical Science and Engineering, Tongji University, Shanghai, 200092, China
| | - Yuyang Kang
- Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, 72 Wenhua Road, Shenyang, 110016, China
| | - Jingdong Guo
- Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, 72 Wenhua Road, Shenyang, 110016, China
| | - Lianzhou Wang
- Nanomaterials Centre, School of Chemical Engineering and AIBN, The University of Queensland, St Lucia, Brisbane, QLD, 4072, Australia
| | | | - Kazunari Domen
- Research Initiative for Supra-Materials, Shinshu University, Nagano, Japan
- Office of University Professors, The University of Tokyo, Tokyo, Japan
| | - Hui-Ming Cheng
- Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, 72 Wenhua Road, Shenyang, 110016, China
- Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, 1068 Xueyuan Blvd, Shenzhen, 518055, China
| | - Gang Liu
- Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, 72 Wenhua Road, Shenyang, 110016, China.
- School of Materials Science and Engineering, University of Science and Technology of China, 72 Wenhua Road, Shenyang, 110016, China.
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15
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He X, Tian W, Yang L, Bai Z, Li L. Optical and Electrical Modulation Strategies of Photoelectrodes for Photoelectrochemical Water Splitting. SMALL METHODS 2024; 8:e2300350. [PMID: 37330656 DOI: 10.1002/smtd.202300350] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/17/2023] [Revised: 05/15/2023] [Indexed: 06/19/2023]
Abstract
When constructing efficient, cost-effective, and stable photoelectrodes for photoelectrochemical (PEC) systems, the solar-driven photo-to-chemical conversion efficiency of semiconductors is limited by several factors, including the surface catalytic activity, light absorption range, carrier separation, and transfer efficiency. Accordingly, various modulation strategies, such as modifying the light propagation behavior and regulating the absorption range of incident light based on optics and constructing and regulating the built-in electric field of semiconductors based on carrier behaviors in semiconductors, are implemented to improve the PEC performance. Herein, the mechanism and research advancements of optical and electrical modulation strategies for photoelectrodes are reviewed. First, parameters and methods for characterizing the performance and mechanism of photoelectrodes are introduced to reveal the principle and significance of modulation strategies. Then, plasmon and photonic crystal structures and mechanisms are summarized from the perspective of controlling the propagation behavior of incident light. Subsequently, the design of an electrical polarization material, polar surface, and heterojunction structure is elaborated to construct an internal electric field, which serves as the driving force to facilitate the separation and transfer of photogenerated electron-hole pairs. Finally, the challenges and opportunities for developing optical and electrical modulation strategies for photoelectrodes are discussed.
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Affiliation(s)
- Xianhong He
- School of Physical Science and Technology, Jiangsu Key Laboratory of Thin Films, Center for Energy Conversion Materials and Physics (CECMP), Soochow University, Suzhou, 215006, P. R. China
- School of Chemistry and Chemical Engineering, Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, Henan Normal University, Xinxiang, Henan, 453007, P. R. China
- Molecular Biology Laboratory, Center for Disease Immunity and Intervention, School of Medicine, Lishui University, Lishui, Zhejiang, 323000, P. R. China
| | - Wei Tian
- School of Physical Science and Technology, Jiangsu Key Laboratory of Thin Films, Center for Energy Conversion Materials and Physics (CECMP), Soochow University, Suzhou, 215006, P. R. China
| | - Lin Yang
- School of Chemistry and Chemical Engineering, Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, Henan Normal University, Xinxiang, Henan, 453007, P. R. China
| | - Zhengyu Bai
- School of Chemistry and Chemical Engineering, Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, Henan Normal University, Xinxiang, Henan, 453007, P. R. China
| | - Liang Li
- School of Physical Science and Technology, Jiangsu Key Laboratory of Thin Films, Center for Energy Conversion Materials and Physics (CECMP), Soochow University, Suzhou, 215006, P. R. China
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16
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Chen R, Meng L, Xu W, Li L. Cocatalysts-Photoanode Interface in Photoelectrochemical Water Splitting: Understanding and Insights. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024; 20:e2304807. [PMID: 37653598 DOI: 10.1002/smll.202304807] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/07/2023] [Revised: 07/31/2023] [Indexed: 09/02/2023]
Abstract
Sluggish oxygen evolution reactions on photoanode surfaces severely limit the application of photoelectrochemical (PEC) water splitting. The loading of cocatalysts on photoanodes has been recognized as the simplest and most efficient optimization scheme, which can reduce the surface barrier, provide more active sites, and accelerate the surface catalytic reaction kinetics. Nevertheless, the introduction of cocatalysts inevitably generates interfaces between photoanodes and oxygen evolution cocatalysts (Ph/OEC), which causes severe interfacial recombination and hinders the carrier transfer. Recently, many researchers have focused on cocatalyst engineering, while few have investigated the effect of the Ph/OEC interface. Hence, to maximize the advantages of cocatalysts, interfacial problems for designing efficient cocatalysts are systematically introduced. In this review, the interrelationship between the Ph/OEC and PEC performance is classified and some methods for characterizing Ph/OEC interfaces are investigated. Additionally, common interfacial optimization strategies are summarized. This review details cocatalyst-design-based interfacial problems, provides ideas for designing efficient cocatalysts, and offers references for solving interfacial problems.
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Affiliation(s)
- Runyu Chen
- School of Physical Science and Technology, Jiangsu Key Laboratory of Thin Films, Center for Energy Conversion Materials & Physics (CECMP), Soochow University, Suzhou, 215006, P. R. China
| | - Linxing Meng
- School of Physical Science and Technology, Jiangsu Key Laboratory of Thin Films, Center for Energy Conversion Materials & Physics (CECMP), Soochow University, Suzhou, 215006, P. R. China
| | - Weiwei Xu
- School of Physical Science and Technology, Jiangsu Key Laboratory of Thin Films, Center for Energy Conversion Materials & Physics (CECMP), Soochow University, Suzhou, 215006, P. R. China
| | - Liang Li
- School of Physical Science and Technology, Jiangsu Key Laboratory of Thin Films, Center for Energy Conversion Materials & Physics (CECMP), Soochow University, Suzhou, 215006, P. R. China
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17
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Wang H, Gao RT, Nguyen NT, Bai J, Ren S, Liu X, Zhang X, Wang L. Superhydrophilic CoFe Dispersion of Hydrogel Electrocatalysts for Quasi-Solid-State Photoelectrochemical Water Splitting. ACS NANO 2023; 17:22071-22081. [PMID: 37901939 DOI: 10.1021/acsnano.3c08861] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/31/2023]
Abstract
Photoelectrochemical (PEC) water splitting is an attractive strategy to convert solar energy to hydrogen. However, the lifetime of PEC devices is restricted by the photocorrosion of semiconductors and the instability of co-catalysts. Herein, we report a feasible in situ inherent cross-linking method for stabilizing semiconductors that uses a CoFe-dispersed polyacrylamide (PAM) hydrogel as a transparent protector. The CoFe-PAM hydrogel protected BiVO4 (BVO) photoanode reached a photocurrent density of 5.7 mA cm-2 at 1.23 VRHE under AM 1.5G illumination with good stability. The PAM hydrogel network improved the loading of Fe sites while enabling the retention of more CoFe co-catalysts and increasing the electron density of the reaction active sites, further improving the PEC performance and stability. More importantly, by tuning the polymerization network, we pioneer the use of quasi-solid-state electrolytes in photoelectrochemistry, where the high concentration of ionic solvent in the PAM hydrogel ensures effective charge transport and good water storage owing to the hydrophilic and porous structure of the hydrogel. This work expands the scope of PEC research by providing a class of three-dimensional hydrogel electrocatalysts and quasi-solid-state electrolytes with huge extension potential, and the versatility of these quasi-solid-state electrolytes can be employed for other semiconductors.
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Affiliation(s)
- Hao Wang
- College of Chemistry and Chemical Engineering, College of Energy Material and Chemistry, Inner Mongolia University, Hohhot 010021, China
| | - Rui-Ting Gao
- College of Chemistry and Chemical Engineering, College of Energy Material and Chemistry, Inner Mongolia University, Hohhot 010021, China
| | - Nhat Truong Nguyen
- Department of Chemical and Materials Engineering, Gina Cody School of Engineering and Computer Science, Concordia University, Montreal, QC H3G 2W1, Canada
| | - Jinwei Bai
- College of Chemistry and Chemical Engineering, College of Energy Material and Chemistry, Inner Mongolia University, Hohhot 010021, China
| | - Shijie Ren
- College of Chemistry and Chemical Engineering, College of Energy Material and Chemistry, Inner Mongolia University, Hohhot 010021, China
| | - Xianhu Liu
- State Key Laboratory of Structural Analysis, Optimization and CAE Software for Industrial Equipment, National Engineering Research Center for Advanced Polymer Processing Technology, Zhengzhou University, Wenhua Road 97-1, Zhengzhou 450002, China
| | - Xueyuan Zhang
- School of Materials Science and Engineering, China University of Petroleum (East China), Qingdao 266580, China
| | - Lei Wang
- College of Chemistry and Chemical Engineering, College of Energy Material and Chemistry, Inner Mongolia University, Hohhot 010021, China
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18
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Li D, Wei R, Sun F, Cheng Z, Yin H, Fan F, Wang X, Li C. Determining the Transformation Kinetics of Water Oxidation Intermediates on Hematite Photoanode. J Phys Chem Lett 2023; 14:8069-8076. [PMID: 37656051 DOI: 10.1021/acs.jpclett.3c02090] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/02/2023]
Abstract
The oxygen evolution reaction (OER) from water is a sequential oxidation reaction process, involved in transformation of multiple reaction intermediates. For photo(electro)catalytic OER, revealing the intermediates transformation kinetics is quite challenging due to its coupling with photogenerated charge dynamics. Herein, we specifically study the transformation kinetics of the OER intermediates in rationally thin hematite photoanodes through increasing the ratio between surface intermediates and photogenerated charges in bulk. We directly identify the formation and consumption kinetics of one-hole OER intermediate (FeIV═O) in photoelectrochemical water oxidation using operando transient absorption (TA) spectroscopy. The microsecond formation kinetics of the FeIV═O species are sensitively changed by the excitation mode of Fe2O3. The subsecond consumption kinetics are closely dependent on surface FeIV═O species density, demonstrating that the cooperation of FeIV═O intermediates is the key to accelerating water oxidation kinetics on the Fe2O3 surface. This work provides insight into understanding and controlling water oxidation reaction kinetics on Fe2O3 surface.
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Affiliation(s)
- Dongfeng Li
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian National Laboratory for Clean Energy, Dalian 116023, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Ruifang Wei
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian National Laboratory for Clean Energy, Dalian 116023, China
- Department of Chemical Physics, University of Science and Technology of China, Hefei 230026, China
| | - Fusai Sun
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian National Laboratory for Clean Energy, Dalian 116023, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Zeyu Cheng
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian National Laboratory for Clean Energy, Dalian 116023, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Heng Yin
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian National Laboratory for Clean Energy, Dalian 116023, China
| | - Fengtao Fan
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian National Laboratory for Clean Energy, Dalian 116023, China
| | - Xiuli Wang
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian National Laboratory for Clean Energy, 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, Dalian 116023, China
- University of Chinese Academy of Sciences, Beijing 100049, China
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19
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Zhang J, Zhang J, Dong C, Xia Y, Jiang L, Wang G, Wang R, Chen J. Direct Growth of Polymeric Carbon Nitride Nanosheet Photoanode for Greatly Efficient Photoelectrochemical Water-Splitting. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2023; 19:e2208049. [PMID: 37127867 DOI: 10.1002/smll.202208049] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/21/2022] [Revised: 04/03/2023] [Indexed: 05/03/2023]
Abstract
A general method for the direct synthesis of highly homogeneous and dense polymerized carbon nitride (PCN) nanosheet films on F: SnO2 (FTO) is developed. Detailed photoelectrochemical (PEC) water-splitting studies reveal that the as-synthesized PCN films exhibit outstanding performance as photoanode for PEC water-splitting. The optimal PCN photoanode exhibits excellent photocurrent density of 650 µA cm-2 , and monochromatic incident photon-to-electron conversion efficiency (IPCE) value up to 30.55% (λ = 400 nm) and 25.97% (λ = 420 nm) at 1.23 VRHE in 0.1 m KOH electrolyte. More importantly, the PCN photoanode has an excellent hole extraction efficiency of up to 70 ± 3% due to the abundance of active sites provided by the PCN photoanode nanosheet, which promotes the transport rates of OER-relevant species. These PCN films provide a new benchmark for PCN photoanode materials.
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Affiliation(s)
- Jin Zhang
- College of Materials Science and Engineering, Sichuan University, Chengdu, Sichuan Province, 610065, China
| | - Jie Zhang
- College of Materials Science and Engineering, Sichuan University, Chengdu, Sichuan Province, 610065, China
| | - Changxue Dong
- College of Materials Science and Engineering, Sichuan University, Chengdu, Sichuan Province, 610065, China
| | - Yu Xia
- College of Materials Science and Engineering, Sichuan University, Chengdu, Sichuan Province, 610065, China
| | - Lan Jiang
- College of Materials Science and Engineering, Sichuan University, Chengdu, Sichuan Province, 610065, China
| | - Gang Wang
- College of Materials Science and Engineering, Sichuan University, Chengdu, Sichuan Province, 610065, China
- Engineering Research Center of Alternative Energy Materials & Devices, Ministry of Education, Sichuan University, Chengdu, Sichuan Province, 610065, China
| | - Ruilin Wang
- College of Materials Science and Engineering, Sichuan University, Chengdu, Sichuan Province, 610065, China
- Engineering Research Center of Alternative Energy Materials & Devices, Ministry of Education, Sichuan University, Chengdu, Sichuan Province, 610065, China
| | - Jinwei Chen
- College of Materials Science and Engineering, Sichuan University, Chengdu, Sichuan Province, 610065, China
- Engineering Research Center of Alternative Energy Materials & Devices, Ministry of Education, Sichuan University, Chengdu, Sichuan Province, 610065, China
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20
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Wang H, Cao C, Li D, Ge Y, Chen R, Song R, Gao W, Wang X, Deng X, Zhang H, Ye B, Li Z, Li C. Achieving High Selectivity in Photocatalytic Oxidation of Toluene on Amorphous BiOCl Nanosheets Coupled with TiO 2. J Am Chem Soc 2023. [PMID: 37466142 DOI: 10.1021/jacs.3c05237] [Citation(s) in RCA: 23] [Impact Index Per Article: 23.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/20/2023]
Abstract
The inert C(sp3)-H bond and easy overoxidation of toluene make the selective oxidation of toluene to benzaldehyde a great challenge. Herein, we present that a photocatalyst, constructed with a small amount (1 mol %) of amorphous BiOCl nanosheets assembled on TiO2 (denoted as 0.01BOC/TiO2), shows excellent performance in toluene oxidation to benzaldehyde, with 85% selectivity at 10% conversion, and the benzaldehyde formation rate is up to 1.7 mmol g-1 h-1, which is 5.6 and 3.7 times that of bare TiO2 and BOC, respectively. In addition to the charge separation function of the BOC/TiO2 heterojunction, we found that the amorphous structure of BOC endows its abundant surface oxygen vacancies (Ov), which can further promote the charge separation. Most importantly, the surface Ov of amorphous BOC can efficiently adsorb and activate O2, and amorphous BOC makes the product, benzaldehyde, easily desorb from the catalyst surface, which alleviates the further oxidation of benzaldehyde, and results in the high selectivity. This work highlights the importance of the microstructure based on heterojunctions, which is conducive to the rational design of photocatalysts with high performance in organic synthesis.
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Affiliation(s)
- Hao Wang
- Key Laboratory of Advanced Catalysis, Gansu Province; State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, Gansu 730000, China
| | - Chen Cao
- Key Laboratory of Advanced Catalysis, Gansu Province; State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, Gansu 730000, China
| | - Dongfeng Li
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian National Laboratory for Clean Energy, Dalian 116023, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Yongxin Ge
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian National Laboratory for Clean Energy, Dalian 116023, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Ruotian Chen
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian National Laboratory for Clean Energy, Dalian 116023, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Rui Song
- Key Laboratory of Advanced Catalysis, Gansu Province; State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, Gansu 730000, China
| | - Wensheng Gao
- Key Laboratory of Advanced Catalysis, Gansu Province; State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, Gansu 730000, China
| | - Xiuli Wang
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian National Laboratory for Clean Energy, Dalian 116023, China
| | - Xintan Deng
- State Key Laboratory of Particle Detection and Electronics, University of Science and Technology of China, Hefei 230026, China
| | - Hongjun Zhang
- State Key Laboratory of Particle Detection and Electronics, University of Science and Technology of China, Hefei 230026, China
| | - Bangjiao Ye
- State Key Laboratory of Particle Detection and Electronics, University of Science and Technology of China, Hefei 230026, China
| | - Zelong Li
- Key Laboratory of Advanced Catalysis, Gansu Province; State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, Gansu 730000, China
| | - Can Li
- Key Laboratory of Advanced Catalysis, Gansu Province; State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, Gansu 730000, China
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian National Laboratory for Clean Energy, Dalian 116023, China
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21
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Liu C, Zhang N, Li Y, Fan R, Wang W, Feng J, Liu C, Wang J, Hao W, Li Z, Zou Z. Long-term durability of metastable β-Fe 2O 3 photoanodes in highly corrosive seawater. Nat Commun 2023; 14:4266. [PMID: 37460538 DOI: 10.1038/s41467-023-40010-9] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2022] [Accepted: 07/08/2023] [Indexed: 07/20/2023] Open
Abstract
Durability is one prerequisite for material application. Photoelectrochemical decomposition of seawater is a promising approach to produce clean hydrogen by using solar energy, but it always faces the problem of serious Cl- corrosion. We find that the main deactivation mechanism of the photoanode is oxide surface reconstruction accompanied by the coordination of Cl- during seawater splitting, and the stability of the photoanode can be effectively improved by enhancing the metal-oxygen interaction. Taking the metastable β-Fe2O3 photoanode as an example, Sn added to the lattice can enhance the M-O bonding energy and hinder the transfer of protons to lattice oxygen, thereby inhibiting excessive surface hydration and Cl- coordination. Therefore, the bare Sn/β-Fe2O3 photoanode delivers a record durability for photoelectrochemical seawater splitting over 3000 h.
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Affiliation(s)
- Changhao Liu
- Collaborative Innovation Center of Advanced Microstructures, National Laboratory of Solid State Microstructures, College of Engineering and Applied Sciences, Nanjing University, 22 Hankou Road, Nanjing, 210093, China
- Jiangsu Key Laboratory for Nano Technology, Nanjing University, 22 Hankou Road, Nanjing, 210093, China
| | - Ningsi Zhang
- Collaborative Innovation Center of Advanced Microstructures, National Laboratory of Solid State Microstructures, College of Engineering and Applied Sciences, Nanjing University, 22 Hankou Road, Nanjing, 210093, China
- Jiangsu Key Laboratory for Nano Technology, Nanjing University, 22 Hankou Road, Nanjing, 210093, China
| | - Yang Li
- Collaborative Innovation Center of Advanced Microstructures, National Laboratory of Solid State Microstructures, College of Engineering and Applied Sciences, Nanjing University, 22 Hankou Road, Nanjing, 210093, China
| | - Rongli Fan
- Collaborative Innovation Center of Advanced Microstructures, National Laboratory of Solid State Microstructures, College of Engineering and Applied Sciences, Nanjing University, 22 Hankou Road, Nanjing, 210093, China
| | - Wenjing Wang
- Collaborative Innovation Center of Advanced Microstructures, National Laboratory of Solid State Microstructures, College of Engineering and Applied Sciences, Nanjing University, 22 Hankou Road, Nanjing, 210093, China
| | - Jianyong Feng
- Collaborative Innovation Center of Advanced Microstructures, National Laboratory of Solid State Microstructures, College of Engineering and Applied Sciences, Nanjing University, 22 Hankou Road, Nanjing, 210093, China.
| | - Chen Liu
- Beijing Synchrotron Radiation Facility, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing, 100049, China
| | - Jiaou Wang
- Beijing Synchrotron Radiation Facility, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing, 100049, China
| | - Weichang Hao
- School of Physics and Centre of Quantum and Matter Sciences, International Research Institute for Multidisciplinary Science, Beihang University, Beijing, 100191, China
| | - Zhaosheng Li
- Collaborative Innovation Center of Advanced Microstructures, National Laboratory of Solid State Microstructures, College of Engineering and Applied Sciences, Nanjing University, 22 Hankou Road, Nanjing, 210093, China.
- Jiangsu Key Laboratory for Nano Technology, Nanjing University, 22 Hankou Road, Nanjing, 210093, China.
| | - Zhigang Zou
- Collaborative Innovation Center of Advanced Microstructures, National Laboratory of Solid State Microstructures, College of Engineering and Applied Sciences, Nanjing University, 22 Hankou Road, Nanjing, 210093, China
- Jiangsu Key Laboratory for Nano Technology, Nanjing University, 22 Hankou Road, Nanjing, 210093, China
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22
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Jiang Z, Zhu X, Wang Z, Liu W, Yan W, Sivula K, Bao J. Edge-Sharing Octahedrally Coordinated NiFe Dual Active Sites on ZnFe 2 O 4 for Photoelectrochemical Water Oxidation. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2023:e2301869. [PMID: 37261961 PMCID: PMC10401156 DOI: 10.1002/advs.202301869] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/22/2023] [Revised: 05/02/2023] [Indexed: 06/03/2023]
Abstract
The structural properties of octahedral sites (BOh ) in spinel oxides (AB2 O4 ) play vital roles in the electrochemical performance of oxygen-related reactions. However, the precise manipulation of AB2 O4 remains challenging due to the complexity of their crystal structure. Here, a simple and versatile molten-salt-mediated strategy is reported to introduce Ni2+ in Boh sites intentionally on the surface of zinc ferrite (ZnFe2 O4 , ZFO) to promote the active sites for photoelectrochemical (PEC) water splitting. The as-created photoanode (ZFO-MSNi) shows a remarkable cathodic shift of ≈ 450 mV (turn-on voltage of ≈ 0.6 VRHE ) as well as three times the 1-sun photocurrent density at 1.23 VRHE for PEC water oxidation in comparison with bare ZFO. A comprehensive structural characterization clearly reveals the local structure of the introduced Ni2+ in ZFO-MSNi. Fewer surface trapping states are observed while the precisely introduced Ni2+ and associated neighboring Fe(3-σ)+ (0<σ<1) sites unite in an edge-sharing octahedral configuration to function as NiFe dual active sites for PEC water oxidation. Moreover, open circuit potential measurements and rapid-scan voltammetry investigation give further insight into the enhanced PEC performance. Overall, this work displays a versatile strategy to regulate the surface active sites of photoelectrodes for increasing performance in PEC solar energy conversion systems.
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Affiliation(s)
- Zhiyong Jiang
- National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei, Anhui, 230029, China
| | - Xiaodi Zhu
- National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei, Anhui, 230029, China
| | - Zhiyu Wang
- National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei, Anhui, 230029, China
| | - Wei Liu
- State Key Laboratory of Fine Chemicals, School of Chemical Engineering, Dalian University of Technology, Dalian, 116024, China
| | - Wensheng Yan
- National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei, Anhui, 230029, China
| | - Kevin Sivula
- Laboratory for Molecular Engineering of Optoelectronic Nanomaterials (LIMNO), École Polytechnique Fédérale de Lausanne, Station 6, Lausanne, 1015, Switzerland
| | - Jun Bao
- National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei, Anhui, 230029, China
- Key Laboratory of Precision and Intelligent Chemistry, University of Science and Technology of China, Hefei, Anhui, 230026, China
- iChEM (Collaborative Innovation Center of Chemistry for Energy Materials), Hefei, Anhui, 230029, China
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23
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Wang Y, Liu J, Xu J, Hao X. Effect of acid treatment on boosting the photoelectrochemical performance of doped and codoped α-Fe 2O 3 photoanodes. RSC Adv 2023; 13:16765-16772. [PMID: 37284185 PMCID: PMC10240174 DOI: 10.1039/d3ra01576a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2023] [Accepted: 05/21/2023] [Indexed: 06/08/2023] Open
Abstract
Acid treatment of Ti-doped α-Fe2O3 photoanode can reduce the onset potential and promote the photocurrent density for photoelectrochemical (PEC) water splitting reaction. However, the inner mechanism of how this occurs has not yet been clarified. This report compares the effect of HCl hydrothermal treatment on α-Fe2O3 photoanodes doped with Ge, Pt, Ti, and Sn or codoped with TiGe, TiPt, and TiSn. The findings show that the promotion effect of HCl hydrothermal treatment was far less significant on the Ge-, Pt-, and Sn-doped α-Fe2O3 than on the Ti-doped one. In contrast, the codoped photoanodes could realize a lift in the photocurrent of up to 39% at 1.23 VRHE (versus the reversible hydrogen electrode) and a reduction in the potential onset by ∼60 mV after HCl hydrothermal treatment. Anatase TiO2 was detected by Raman spectroscopy on the Ti-doped α-Fe2O3 with adequate treatment in HCl solution. Thus, the performance promotion by acid treatment was ascribed to the surface-concentrated Ti-O bonds acting as a passivation layer that could increase the charge-capture capacity and reduce the charge-transfer resistance, as demonstrated by the potential-modulated electrochemical impedance spectroscopy results. HCl treatment of the in situ-doped α-Fe2O3 and an excessive treatment time for the ex situ-doped α-Fe2O3 caused an inhibition in the PEC performance, which could be attributed to the adverse effect of lattice defects induced by acid corrosion. The application scope of HCl treatment on the doped α-Fe2O3 was determined by revealing its working mechanism.
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Affiliation(s)
- Yujie Wang
- School of Materials and Chemical Engineering, Chuzhou University Chuzhou Anhui 239000 China
| | - Jinlong Liu
- School of Materials and Chemical Engineering, Chuzhou University Chuzhou Anhui 239000 China
| | - Jie Xu
- School of Materials and Chemical Engineering, Chuzhou University Chuzhou Anhui 239000 China
| | - Xiaobin Hao
- School of Materials and Chemical Engineering, Chuzhou University Chuzhou Anhui 239000 China
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24
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Mehmood R, Fan W, Hu X, Li J, Liu P, Zhang Y, Zhou Z, Wang J, Liu M, Zhang F. Confirming High-Valent Iron as Highly Active Species of Water Oxidation on the Fe, V-Coupled Bimetallic Electrocatalyst: In Situ Analysis of X-ray Absorption and Mössbauer Spectroscopy. J Am Chem Soc 2023. [PMID: 37227965 DOI: 10.1021/jacs.3c02288] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Iron (Fe)-based bimetallic oxides/hydroxides have been widely investigated for promising alkaline electrochemical oxygen evolution reactions (OERs), but it still remains argumentative whether Fe3+ or Fe4+ intermediates are highly active for efficient OER. Here, we rationally designed and prepared one Fe, V-based bimetallic composite nanosheet by employing the OER-inert V element as a promoter to completely avoid the argument of real active metals and using our recently developed one-dimensional conductive nickel phosphide (NP) as a support. The as-obtained hierarchical nanocomposite (denoted as FeVOx/NP) was evaluated as a model catalyst to gain insight into the iron-based species as highly active OER sites by performing in situ X-ray absorption spectroscopy and 57Fe Mössbauer spectroscopy measurements. It was found that the high-valent Fe4+ species can only be detected during the OER process of the FeVOx/NP nanocomposite instead of the iron counterpart itself. Together with the fact that the OER activities of both the vanadium and iron counterparts are by far worse than that of the FeVOx/NP composite, we can confirm that the high-valent Fe4+ formed are the highly active species for efficient OER. As demonstrated by density functional theory simulations, the composite of Fe and V metals is proposed to cause a decreased Gibbs free energy as well as theoretical overpotential of water oxidation with respect to its counterparts, as is responsible for its excellent OER performance with extremely low OER overpotential (290 mV at 500 mA cm-2) and extraordinary stability (1000 h at 100 mA cm-2).
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Affiliation(s)
- Rashid Mehmood
- State Key Laboratory of Catalysis, iChEM, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian National Laboratory for Clean Energy, Dalian 116023, Liaoning, China
- Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Wenjun Fan
- State Key Laboratory of Catalysis, iChEM, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian National Laboratory for Clean Energy, Dalian 116023, Liaoning, China
| | - Xu Hu
- School of Materials Science and Engineering, Institute of New Energy Material Chemistry, Renewable Energy Conversion and Storage Center (ReCast), Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education), Nankai University, Tianjin 300350, China
| | - Jiangnan Li
- State Key Laboratory of Catalysis, iChEM, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian National Laboratory for Clean Energy, Dalian 116023, Liaoning, China
- Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Peijia Liu
- Center for Advanced Mössbauer Spectroscopy, Mössbauer Effect Data Center, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, Liaoning, China
| | - Yashi Zhang
- State Key Laboratory of Catalysis, iChEM, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian National Laboratory for Clean Energy, Dalian 116023, Liaoning, China
- Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Zhen Zhou
- School of Materials Science and Engineering, Institute of New Energy Material Chemistry, Renewable Energy Conversion and Storage Center (ReCast), Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education), Nankai University, Tianjin 300350, China
| | - Junhu Wang
- Center for Advanced Mössbauer Spectroscopy, Mössbauer Effect Data Center, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, Liaoning, China
| | - Min Liu
- College of Nuclear Science and Technology, University of South China, Hengyang 421001, China
| | - Fuxiang Zhang
- State Key Laboratory of Catalysis, iChEM, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian National Laboratory for Clean Energy, Dalian 116023, Liaoning, China
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25
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Zhang G, Lu C, Li C, Li S, Zhao X, Nie K, Wang J, Feng K, Zhong J. CoMoO 4-modified hematite with oxygen vacancies for high-efficiency solar water splitting. Phys Chem Chem Phys 2023; 25:13410-13416. [PMID: 37161656 DOI: 10.1039/d3cp01192e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/11/2023]
Abstract
Hematite is a potential photoelectrode for photoelectrochemical (PEC) water splitting. Nevertheless, its water oxidation efficiency is highly limited by its significant photogenerated carrier recombination, poor conductivity and slow water oxidation kinetics. Herein, under low-vacuum (LV) conditions, we fabricated a CoMoO4 layer on oxygen-vacancy-modified hematite (CoMo-Fe2O3 (LV)) for the first time for efficient solar water splitting. The existence of oxygen vacancies can significantly facilitate the electrical conductivity, while the large onset potential along with oxygen vacancies can be lowered by the CoMoO4 with accelerated water oxidation kinetics. Therefore, a high photocurrent density of 3.53 mA cm-2 at 1.23 VRHE was obtained for the CoMo-Fe2O3 (LV) photoanode. Moreover, it can be further coupled with the FeNiOOH co-catalyst to reach a benchmark photocurrent of 4.18 mA cm-2 at 1.23 VRHE, which is increased around 4-fold compared with bare hematite (0.90 mA cm-2). The combination of CoMoO4, FeNiOOH, and oxygen vacancies may be used as a reasonable strategy for developing high-efficiency hematite-based photoelectrodes for solar water oxidation.
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Affiliation(s)
- Gaoteng Zhang
- Institute of Functional Nano and Soft Materials Laboratory (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Soochow University, Suzhou 215123, China.
| | - Cheng Lu
- Institute of Functional Nano and Soft Materials Laboratory (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Soochow University, Suzhou 215123, China.
| | - Chang Li
- Institute of Functional Nano and Soft Materials Laboratory (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Soochow University, Suzhou 215123, China.
| | - Shuo Li
- Institute of Functional Nano and Soft Materials Laboratory (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Soochow University, Suzhou 215123, China.
| | - Xiaoquan Zhao
- Institute of Functional Nano and Soft Materials Laboratory (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Soochow University, Suzhou 215123, China.
| | - Kaiqi Nie
- Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China
| | - Jiaou Wang
- Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China
| | - Kun Feng
- Institute of Functional Nano and Soft Materials Laboratory (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Soochow University, Suzhou 215123, China.
| | - Jun Zhong
- Institute of Functional Nano and Soft Materials Laboratory (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Soochow University, Suzhou 215123, China.
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26
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Gao RT, Zhang J, Nakajima T, He J, Liu X, Zhang X, Wang L, Wu L. Single-atomic-site platinum steers photogenerated charge carrier lifetime of hematite nanoflakes for photoelectrochemical water splitting. Nat Commun 2023; 14:2640. [PMID: 37156781 PMCID: PMC10167323 DOI: 10.1038/s41467-023-38343-6] [Citation(s) in RCA: 25] [Impact Index Per Article: 25.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2022] [Accepted: 04/26/2023] [Indexed: 05/10/2023] Open
Abstract
Although much effort has been devoted to improving photoelectrochemical water splitting of hematite (α-Fe2O3) due to its high theoretical solar-to-hydrogen conversion efficiency of 15.5%, the low applied bias photon-to-current efficiency remains a huge challenge for practical applications. Herein, we introduce single platinum atom sites coordination with oxygen atom (Pt-O/Pt-O-Fe) sites into single crystalline α-Fe2O3 nanoflakes photoanodes (SAs Pt:Fe2O3-Ov). The single-atom Pt doping of α-Fe2O3 can induce few electron trapping sites, enhance carrier separation capability, and boost charge transfer lifetime in the bulk structure as well as improve charge carrier injection efficiency at the semiconductor/electrolyte interface. Further introduction of surface oxygen vacancies can suppress charge carrier recombination and promote surface reaction kinetics, especially at low potential. Accordingly, the optimum SAs Pt:Fe2O3-Ov photoanode exhibits the photoelectrochemical performance of 3.65 and 5.30 mA cm-2 at 1.23 and 1.5 VRHE, respectively, with an applied bias photon-to-current efficiency of 0.68% for the hematite-based photoanodes. This study opens an avenue for designing highly efficient atomic-level engineering on single crystalline semiconductors for feasible photoelectrochemical applications.
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Affiliation(s)
- Rui-Ting Gao
- College of Chemistry and Chemical Engineering, College of Energy Material and Chemistry, Inner Mongolia University, Hohhot, 010021, China
| | - Jiangwei Zhang
- College of Chemistry and Chemical Engineering, College of Energy Material and Chemistry, Inner Mongolia University, Hohhot, 010021, China
| | - Tomohiko Nakajima
- Advanced Manufacturing Research Institute, National Institute of Advanced Industrial Science and Technology, Tsukuba Central 5, 1-1-1 Higashi, Tsukuba, Ibaraki, 305-8565, Japan
| | - Jinlu He
- College of Chemistry and Chemical Engineering, Inner Mongolia University, Hohhot, 010021, China.
| | - Xianhu Liu
- Key Laboratory of Materials Processing and Mold, Ministry of Education, Zhengzhou University, Zhengzhou, 450002, China
| | - Xueyuan Zhang
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha, 410082, China
| | - Lei Wang
- College of Chemistry and Chemical Engineering, College of Energy Material and Chemistry, Inner Mongolia University, Hohhot, 010021, China.
| | - Limin Wu
- College of Chemistry and Chemical Engineering, College of Energy Material and Chemistry, Inner Mongolia University, Hohhot, 010021, China.
- Department of Materials Science and State Key Laboratory of Molecular Engineering of Polymers, Fudan University, Shanghai, 200433, China.
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27
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Design of Ti-Pt Co-doped α-Fe 2O 3 photoanodes for enhanced performance of photoelectrochemical water splitting. J Colloid Interface Sci 2023; 641:91-104. [PMID: 36924549 DOI: 10.1016/j.jcis.2023.03.042] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2023] [Revised: 02/22/2023] [Accepted: 03/06/2023] [Indexed: 03/13/2023]
Abstract
This study demonstrates Ti and Pt co-doping can synergistically improve the PEC performance of the α-Fe2O3 photoanode. By varying the doping methods, the sample with in-situ Ti ex-situ Pt doping (Tii-Pte) exhibits the best performance. It demonstrates that Ti doping in bulk facilities charge separation and Pt doping on the surface further accelerates charge transfer. In contrast, Ti doping on the surface inhibits charge separation, and Pt doping in bulk hinders charge separation and transfer. HCl treatment is used to minimize the onset potential further, while it is favorable for the ex-situ doped α-Fe2O3, which is more efficient on Tie than the Pte-doped ones. On the ex-situ Ti-doped α-Fe2O3 after HCl treatment, anatase TiO2 is probed, suggesting that Ti-O bonds accumulate when Fe-O bonds are partly removed, which enhances the charge transfer in surface states. Unfortunately, HCl treatment also induces lattice defects that are adverse to charge transport, inhibiting the performance of in-situ doped α-Fe2O3 and excessively treated ex-situ doped ones. Coupled with methanol solvothermal treatment and NiOOH/FeOOH cocatalysts loading, the optimized Ti-Pt/Fe2O3 photoanode exhibits an impressive photocurrent density of 2.81 mA cm-2 at 1.23 V vs. RHE and a low onset potential of 0.60 V vs. RHE.
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28
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Enabling high low-bias performance of Fe 2O 3 photoanode for photoelectrochemical water splitting. J Colloid Interface Sci 2023; 633:555-565. [PMID: 36470136 DOI: 10.1016/j.jcis.2022.11.134] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2022] [Revised: 11/18/2022] [Accepted: 11/26/2022] [Indexed: 11/30/2022]
Abstract
Fe2O3 is a promising photoanode material used for photoelectrochemical water splitting due to its narrow bandgap and excellent stability in solution. However, because the nanorods shrink and coalesce when annealed under high temperatures, the charge separation and injection efficiencies are suppressed in the conventional nanocoral Fe2O3, resulting in its high bias potential and low photocurrent density. Herein, by improving the radial growth of FeOOH precursor, highly dispersed Fe2O3 nanorods could be prepared. It enabled them to have sufficient light-harvesting and short charge transport distance, high light absorption and charge separation/injection efficiencies, increased photocurrent density and reduced onset potential Von. The optimized Fe2O3 photoanodes obtained a remarkable low-bias photocurrent density of 0.84 mA cm-2 at 1.0 V versus reversible hydrogen electrode (vs. RHE). It was further improved to 1.36 mA cm-2 at 1.0 V vs. RHE with the Von reduced to 0.50 V vs. RHE when post-treated with a solvothermal method and loaded with NiOOH/FeOOH cocatalysts. The applied bias photo-to-current conversion efficiency was maximized to 0.45% at 0.84 V vs. RHE.
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29
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Li D, Wei R, Yin H, Zhang H, Wang X, Li C. Dynamic charge collecting mechanisms of cobalt phosphate on hematite photoanodes studied by photoinduced absorption spectroscopy. Chem Sci 2023; 14:1861-1870. [PMID: 36819856 PMCID: PMC9930927 DOI: 10.1039/d2sc05802b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2022] [Accepted: 01/19/2023] [Indexed: 01/22/2023] Open
Abstract
Reaction sites, surface states, and surface loaded electrocatalysts are photoinduced charge storage sites and critical to photoelectrochemical (PEC) performance, however the charge transfer mechanisms involved in the three remain poorly understood. Herein, we studied the charge transfer processes in hematite (Fe2O3) without/with loaded cobalt phosphate (CoPi) by operando photoinduced absorption (PIA) spectroscopy. The loaded CoPi receives trapped holes in surface states at low potential and directly captures holes in the valence band at high potential. Through the dynamic hole storage mechanisms, loaded CoPi on Fe2O3 facilitates spatial charge separation and serves as a charge transfer mediator, instead of serving as a catalyst to change the water oxidation mechanism (constant third-order reaction). The spatial separation of photoinduced charges between Fe2O3 and CoPi results in more long-lived holes on the Fe2O3 surface to improve PEC water oxidation kinetically. The dynamic charge collecting mechanism sheds light on the understanding and designing of electrocatalyst loaded photoanodes.
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Affiliation(s)
- Dongfeng Li
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian National Laboratory for Clean Energy Dalian 116023 China
- University of Chinese Academy of Sciences Beijing 100049 China
| | - Ruifang Wei
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian National Laboratory for Clean Energy Dalian 116023 China
- Department of Chemical Physics, University of Science and Technology of China Hefei 230026 China
| | - Heng Yin
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian National Laboratory for Clean Energy Dalian 116023 China
| | - Hemin Zhang
- College of Materials Science and Engineering, Sichuan University, Engineering Research Center of Alternative Energy Materials and Devices, Ministry of Education Chengdu 610065 China
| | - Xiuli Wang
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian National Laboratory for Clean Energy 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 Dalian 116023 China
- University of Chinese Academy of Sciences Beijing 100049 China
- Department of Chemical Physics, University of Science and Technology of China Hefei 230026 China
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Park J, Yoon KY, Kwak MJ, Kang J, Kim S, Chaule S, Ha SJ, Jang JH. Boosting Charge Transfer Efficiency by Nanofragment MXene for Efficient Photoelectrochemical Water Splitting of NiFe(OH) x Co-Catalyzed Hematite. ACS APPLIED MATERIALS & INTERFACES 2023; 15:9341-9349. [PMID: 36749965 DOI: 10.1021/acsami.2c20524] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
The use of oxygen evolution co-catalysts (OECs) with hematite photoanodes has received much attention because of the potential to reduce surface charge recombination. However, the low surface charge transfer and bulk charge separation rate of hematite are not improved by decorating with OECs, and the intrinsic drawbacks of hematite still limit efficient photoelectrochemical (PEC) water splitting. Here, we successfully overcame the sluggish oxygen evolution reaction performance of hematite for water splitting by inserting zero-dimensional (0D) nanofragmented MXene (NFMX) as a hole transport material between the hematite and the OEC. The 0D NFMX was fabricated from two-dimensional (2D) MXene sheets and deposited onto the surface of a three-dimensional (3D) hematite photoanode via a centrifuge-assisted method without altering the inherent performance of the 2D MXene sheets. Among many OECs, NiFe(OH)x was selected as the OEC to improve hematite PEC performance in our system because of its efficient charge transport behavior and high stability. Because of the great synergy between NFMX and NiFe(OH)x, NiFe(OH)x/NFMX/Fe2O3 achieved a maximum photocurrent density of 3.09 mA cm-2 at 1.23 VRHE, which is 2.78-fold higher than that of α-Fe2O3 (1.11 mA cm-2). Furthermore, the poor stability of MXene in an aqueous solution for water splitting was resolved by uniformly coating it with NiFe(OH)x, after which it showed outstanding stability for 60 h at 1.23 VRHE. This study demonstrates the successful use of NFMX as a hole transport material combined with an OEC for highly efficient water splitting.
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Affiliation(s)
- Juhyung Park
- School of Energy and Chemical Engineering, Department of Energy Engineering, Graduate School of Carbon Neutrality, UNIST, Ulsan 44919, Republic of Korea
| | - Ki-Yong Yoon
- School of Energy and Chemical Engineering, Department of Energy Engineering, Graduate School of Carbon Neutrality, UNIST, Ulsan 44919, Republic of Korea
| | - Myung-Jun Kwak
- School of Energy and Chemical Engineering, Department of Energy Engineering, Graduate School of Carbon Neutrality, UNIST, Ulsan 44919, Republic of Korea
| | - Jihun Kang
- School of Energy and Chemical Engineering, Department of Energy Engineering, Graduate School of Carbon Neutrality, UNIST, Ulsan 44919, Republic of Korea
| | - Suhee Kim
- School of Energy and Chemical Engineering, Department of Energy Engineering, Graduate School of Carbon Neutrality, UNIST, Ulsan 44919, Republic of Korea
| | - Sourav Chaule
- School of Energy and Chemical Engineering, Department of Energy Engineering, Graduate School of Carbon Neutrality, UNIST, Ulsan 44919, Republic of Korea
| | - Seong-Ji Ha
- School of Energy and Chemical Engineering, Department of Energy Engineering, Graduate School of Carbon Neutrality, UNIST, Ulsan 44919, Republic of Korea
| | - Ji-Hyun Jang
- School of Energy and Chemical Engineering, Department of Energy Engineering, Graduate School of Carbon Neutrality, UNIST, Ulsan 44919, Republic of Korea
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31
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Lv X, Zhang G, Wang M, Li G, Deng J, Zhong J. How titanium and iron are integrated into hematite to enhance the photoelectrochemical water oxidation: a review. Phys Chem Chem Phys 2023; 25:1406-1420. [PMID: 36594624 DOI: 10.1039/d2cp04969d] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Hematite has been considered as a promising photoanode candidate for photoelectrochemical (PEC) water oxidation and has attracted numerous interests in the past decades. However, intrinsic drawbacks drastically lower its photocatalytic activity. Ti-based modifications including Ti-doping, Fe2O3/Fe2TiO5 heterostructures, TiO2 passivation layers, and Ti-containing underlayers have shown great potential in enhancing the PEC conversion efficiency of hematite. Moreover, the combination of Ti-based modifications with various strategies towards more efficient hematite photoanodes has been widely investigated. Nevertheless, a corresponding comprehensive overview, especially with the most recent working mechanisms, is still lacking, limiting further improvement. In this respect, by summarizing the recent progress in Ti-modified hematite photoanodes, this review aims to demonstrate how the integration of titanium and iron atoms into hematite influences the PEC properties by tuning the carrier behaviours. It will provide more cues for the rational design of high-performance hematite photoanodes towards future practical applications.
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Affiliation(s)
- Xiaoxin Lv
- Institute for Energy Research, Automotive Engineering Research Institute, Jiangsu University, Zhenjiang, 212013, China.
| | - Gaoteng Zhang
- Institute of Functional Nano and Soft Materials Laboratory (FUNSOM), Jiangsu Key Laboratory of Advanced Negative Carbon Technologies, Soochow University, Suzhou, 215123, China.
| | - Menglian Wang
- Institute for Energy Research, Automotive Engineering Research Institute, Jiangsu University, Zhenjiang, 212013, China.
| | - Guoqing Li
- Institute for Energy Research, Automotive Engineering Research Institute, Jiangsu University, Zhenjiang, 212013, China.
| | - Jiujun Deng
- Institute for Energy Research, Automotive Engineering Research Institute, Jiangsu University, Zhenjiang, 212013, China.
| | - Jun Zhong
- Institute of Functional Nano and Soft Materials Laboratory (FUNSOM), Jiangsu Key Laboratory of Advanced Negative Carbon Technologies, Soochow University, Suzhou, 215123, China.
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Rudatis P, Hrubesch J, Kremshuber S, Apaydin DH, Eder D. Enhanced Oxygen Evolution Reaction Activity in Hematite Photoanodes: Effect of Sb-Li Co-Doping. ACS OMEGA 2023; 8:2027-2033. [PMID: 36687027 PMCID: PMC9850461 DOI: 10.1021/acsomega.2c05241] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/16/2022] [Accepted: 12/01/2022] [Indexed: 06/17/2023]
Abstract
Co-doping represents a valid approach to maximize the performance of photocatalytic and photoelectrocatalytic semiconductors. Albeit theoretical predictions in hematite suggesting a bulk n-type doping and a surface p-type doping would deliver best results, hematite co-doping with coupled cations possessing low and high oxidation states has shown promising results. Herein, we report, for the first time, Sb and Li co-doping of hematite photoanodes. Particularly, this is also a seminal work for the introduction of the highly reactive Sb5+ directly into the hematite thin films. Upon co-doping, we have a synergistic effect on the current densities with a 67-fold improvement over the standard. Via a combined investigation with profuse photoelectrochemical measurements, X-ray diffraction, X-ray photoelectron spectroscopy, and Raman analyses, we confirm the two doping roles of Sb5+ and Li+ as the substitutional and interstitial dopant, respectively. The improvements are attributed to a higher charge carrier concentration along with a lower charge transfer resistance at the surface.
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Gao RT, Nguyen NT, Nakajima T, He J, Liu X, Zhang X, Wang L, Wu L. Dynamic semiconductor-electrolyte interface for sustainable solar water splitting over 600 hours under neutral conditions. SCIENCE ADVANCES 2023; 9:eade4589. [PMID: 36598972 PMCID: PMC9812387 DOI: 10.1126/sciadv.ade4589] [Citation(s) in RCA: 23] [Impact Index Per Article: 23.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/05/2023]
Abstract
Photoelectrochemical (PEC) water splitting that functions in pH-neutral electrolyte attracts increasing attention to energy demand sustainability. Here, we propose a strategy to in situ form a NiB layer by tuning the composition of the neutral electrolyte with the additions of nickel and borate species, which improves the PEC performance of the BiVO4 photoanode. The NiB/BiVO4 exhibits a photocurrent density of 6.0 mA cm-2 at 1.23 VRHE with an onset potential of 0.2 VRHE under 1 sun illumination. The photoanode displays a photostability of over 600 hours in a neutral electrolyte. The additive of Ni2+ in the electrolyte, which efficiently inhibits the dissolution of NiB, can accelerate the photogenerated charge transfer and enhance the water oxidation kinetics. The borate species with B─O bonds act as a promoter of catalyst activity by accelerating proton-coupled electron transfer. The synergy effect of both species suppresses the surface charge recombination and inhibits the photocorrosion of BiVO4.
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Affiliation(s)
- Rui-Ting Gao
- College of Chemistry and Chemical Engineering, Inner Mongolia University, Hohhot 010021, China
| | - Nhat Truong Nguyen
- Department of Chemical and Materials Engineering, Gina Cody School of Engineering and Computer Science, Concordia University, Montreal QC H3G 2W1, Canada
| | - Tomohiko Nakajima
- Advanced Manufacturing Research Institute, National Institute of Advanced Industrial Science and Technology, Tsukuba Central 5, 1-1-1 Higashi, Tsukuba, Ibaraki 305-8565, Japan
| | - Jinlu He
- College of Chemistry and Chemical Engineering, Inner Mongolia University, Hohhot 010021, China
- Corresponding author. (L.Wa.); (J.H.); (L.Wu.)
| | - Xianhu Liu
- Key Laboratory of Materials Processing and Mold, Ministry of Education, Zhengzhou University, Zhengzhou 450002, China
| | - Xueyuan Zhang
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, China
| | - Lei Wang
- College of Chemistry and Chemical Engineering, Inner Mongolia University, Hohhot 010021, China
- Corresponding author. (L.Wa.); (J.H.); (L.Wu.)
| | - Limin Wu
- College of Chemistry and Chemical Engineering, Inner Mongolia University, Hohhot 010021, China
- Department of Materials Science and State Key Laboratory of Molecular Engineering of Polymers, Fudan University, Shanghai 200433, China
- Corresponding author. (L.Wa.); (J.H.); (L.Wu.)
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Zhang C, Wang M, Gao K, Zhu H, Ma J, Fang X, Wang X, Ding Y. Constructing NCuS Interface Chemical Bonds over SnS 2 for Efficient Solar-Driven Photoelectrochemical Water Splitting. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2023; 19:e2205706. [PMID: 36408820 DOI: 10.1002/smll.202205706] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/16/2022] [Revised: 11/02/2022] [Indexed: 06/16/2023]
Abstract
The restricted charge transfer and slow oxygen evolution reaction (OER) dynamics tremendously hamper the realistic implementation of SnS2 photoanodes for photoelectrochemical (PEC) water splitting. Here, a novel strategy is developed to construct interfacial NCuS bonds between NC skeletons and SnS2 (CuNC@SnS2 ) for efficient PEC water splitting. Compared with SnS2 , the PEC activity of CuNC@SnS2 photoelectrode is tremendously heightened, obtaining a current density of 3.40 mA cm2 at 1.23 VRHE with a negatively shifted onset potential of 0.04 VRHE , which is 6.54 times higher than that of SnS2 . The detailed experimental characterizations and theoretical calculation demonstrate that the interfacial NCuS bonds enhance the OER kinetic, reduce the surface overpotential, facilitate the separation of photon-generated carriers, and provide a fast transmission channel for electrons. This work presents a new approach for modulating charge transfer by interfacial bond design in heterojunction photoelectrodes toward promoting PEC performance and solar energy application.
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Affiliation(s)
- Chengming Zhang
- Key Laboratory of Functional Molecule Design and Interface Process, Anhui Jianzhu University, Hefei, 230601, China
| | - Meng Wang
- Key Laboratory of Functional Molecule Design and Interface Process, Anhui Jianzhu University, Hefei, 230601, China
| | - Kaiyue Gao
- Key Laboratory of Functional Molecule Design and Interface Process, Anhui Jianzhu University, Hefei, 230601, China
| | - Haibao Zhu
- Key Laboratory of Functional Molecule Design and Interface Process, Anhui Jianzhu University, Hefei, 230601, China
| | - Jie Ma
- Key Laboratory of Functional Molecule Design and Interface Process, Anhui Jianzhu University, Hefei, 230601, China
| | - Xiaolong Fang
- Key Laboratory of Functional Molecule Design and Interface Process, Anhui Jianzhu University, Hefei, 230601, China
| | - Xiufang Wang
- Key Laboratory of Functional Molecule Design and Interface Process, Anhui Jianzhu University, Hefei, 230601, China
| | - Yi Ding
- Key Laboratory of Functional Molecule Design and Interface Process, Anhui Jianzhu University, Hefei, 230601, China
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Khan N, Gul T, Khan I, Alabbad EA, Ali S, Saeed K, Khan I. Scavenging of Organic Pollutant and Fuel Generation through Cost-Effective and Abundantly Accessible Rust: A Theoretical Support with DFT Simulations. MATERIALS (BASEL, SWITZERLAND) 2022; 16:142. [PMID: 36614481 PMCID: PMC9821181 DOI: 10.3390/ma16010142] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/12/2022] [Revised: 12/19/2022] [Accepted: 12/21/2022] [Indexed: 06/15/2023]
Abstract
Waste management and energy generation are the foremost concerns due to their direct relationship with biological species and the environment. Herein, we report the utilization of iron rust (inorganic pollutant) as a photocatalyst for the photodegradation of methylene blue (MB) dye (organic pollutant) under visible light (economic) and water oxidation (energy generation). Iron rust was collected from metallic pipes and calcined in the furnace at 700 °C for 3 h to remove the moisture/volatile content. The uncalcined and calcined rust NPs are characterized through scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS), Fourier-transform infrared (FTIR) analysis, X-ray Diffraction (XRD), and thermogravimetric analysis (TGA). The morphological study illustrated that the shape of uncalcined and calcined iron rust is spongy, porous, and agglomerated. The XRD and DLS particle sizes are in a few hundred nanometers range. The photodegradation (PD) investigation shows that calcined rust NPs are potent for the PD of modeled MB, and the degradation efficiency was about 94% in a very short time of 11 min. The photoelectrochemical (PEC) measurements revealed that calcined rust NPs are more active than uncalcined rust under simulated 1 SUN illumination with the respective photocurrent densities of ~0.40 and ~0.32 mA/cm2. The density functional theory simulations show the chemisorption of dye molecules over the catalyst surface, which evinces the high catalytic activity of the catalyst. These results demonstrate that cheaper and abundantly available rust can be useful for environmental and energy applications.
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Affiliation(s)
- Nisar Khan
- Department of Chemistry, Bacha Khan University, Khyber Pakhtunkhwa, Charsadda 24540, Pakistan
| | - Tamanna Gul
- Department of Chemistry, Bacha Khan University, Khyber Pakhtunkhwa, Charsadda 24540, Pakistan
| | - Idrees Khan
- Department of Chemistry, Bacha Khan University, Khyber Pakhtunkhwa, Charsadda 24540, Pakistan
- School of Chemistry and Chemical Engineering, Northwestern Polytechnical University, Xi’an 710129, China
| | - Eman A. Alabbad
- Department of Chemistry, College of Science, Imam Abdulrahman Bin Faisal University, P.O. Box 1980, Dammam 31441, Saudi Arabia
| | - Shahid Ali
- Interdisciplinary Research Center for Hydrogen and Energy Storage, King Fahd University of Petroleum and Minerals, Dhahran 31261, Saudi Arabia
| | - Khalid Saeed
- Department of Chemistry, Bacha Khan University, Khyber Pakhtunkhwa, Charsadda 24540, Pakistan
| | - Ibrahim Khan
- School of Chemical Engineering and Materials Science, Chung-Ang University, 84 Heukseok-ro, Seoul 06974, Republic of Korea
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36
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Xiao Y, Fan Z, Nakabayashi M, Li Q, Zhou L, Wang Q, Li C, Shibata N, Domen K, Li Y. Decoupling light absorption and carrier transport via heterogeneous doping in Ta 3N 5 thin film photoanode. Nat Commun 2022; 13:7769. [PMID: 36522326 PMCID: PMC9755297 DOI: 10.1038/s41467-022-35538-1] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2022] [Accepted: 12/08/2022] [Indexed: 12/23/2022] Open
Abstract
The trade-off between light absorption and carrier transport in semiconductor thin film photoelectrodes is a major limiting factor of their solar-to-hydrogen efficiency for photoelectrochemical water splitting. Herein, we develop a heterogeneous doping strategy that combines surface doping with bulk gradient doping to decouple light absorption and carrier transport in a thin film photoelectrode. Taking La and Mg doped Ta3N5 thin film photoanode as an example, enhanced light absorption is achieved by surface La doping through alleviating anisotropic optical absorption, while efficient carrier transport in the bulk is maintained by the gradient band structure induced by gradient Mg doping. Moreover, the homojunction formed between the La-doped layer and the gradient Mg-doped layer further promotes charge separation. As a result, the heterogeneously doped photoanode yields a half-cell solar-to-hydrogen conversion efficiency of 4.07%, which establishes Ta3N5 as a leading performer among visible-light-responsive photoanodes. The heterogeneous doping strategy could be extended to other semiconductor thin film light absorbers to break performance trade-offs by decoupling light absorption and carrier transport.
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Affiliation(s)
- Yequan Xiao
- grid.54549.390000 0004 0369 4060Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu, 610054 China
| | - Zeyu Fan
- grid.54549.390000 0004 0369 4060Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu, 610054 China
| | - Mamiko Nakabayashi
- grid.26999.3d0000 0001 2151 536XInstitute of Engineering Innovation, The University of Tokyo, Tokyo, 113-8656 Japan
| | - Qiaoqiao Li
- grid.54549.390000 0004 0369 4060School of Physics, University of Electronic Science and Technology of China, Chengdu, 610054 China
| | - Liujiang Zhou
- grid.54549.390000 0004 0369 4060School of Physics, University of Electronic Science and Technology of China, Chengdu, 610054 China
| | - Qian Wang
- grid.27476.300000 0001 0943 978XGraduate School of Engineering, Nagoya University, Nagoya, 464-8603 Japan ,grid.27476.300000 0001 0943 978XInstitute for Advanced Research, Nagoya University, Nagoya, 464-8601 Japan
| | - Changli Li
- grid.12981.330000 0001 2360 039XSchool of Materials, Sun Yat‐sen University, Guangzhou, 510275 China
| | - Naoya Shibata
- grid.26999.3d0000 0001 2151 536XInstitute of Engineering Innovation, The University of Tokyo, Tokyo, 113-8656 Japan
| | - Kazunari Domen
- grid.26999.3d0000 0001 2151 536XOffice of University Professors, The University of Tokyo, Tokyo, 113-8656 Japan ,grid.263518.b0000 0001 1507 4692Research Initiative for Supra-Materials (RISM), Shinshu University, Nagano, 380-8553 Japan
| | - Yanbo Li
- grid.54549.390000 0004 0369 4060Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu, 610054 China
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Achieving surface-sealing of hematite nanoarray photoanode with controllable metal–organic frameworks shell for enhanced photoelectrochemical water oxidation. J Catal 2022. [DOI: 10.1016/j.jcat.2022.06.043] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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38
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Jia Y, Lin M, Tian Z, Gao J. A special Bi-S motif catalyst for highly selective CO2 conversion to methanol. J Catal 2022. [DOI: 10.1016/j.jcat.2022.08.016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/15/2022]
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39
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He X, Tian W, Bai Z, Yang L, Li L. Decoration of BiVO4/ZnO Photoanodes with Fe‐ZIF‐8 to Simultaneously Enhance Charge Separation and Hole Transportation for Efficient Solar Water Splitting. CHEMPHOTOCHEM 2022. [DOI: 10.1002/cptc.202200113] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Xianhong He
- Henan Normal University School of Chemistry and Chemical Engineering Construction road 46th Xinxiang CHINA
| | - Wei Tian
- Soochow University No. 1, Shizi Street, Soochow CHINA
| | - Zhengyu Bai
- Henan Normal University School of Chemistry and Chemical Engineering Construction road 46th Xinxiang CHINA
| | - Lin Yang
- Henan Normal University School of Chemistry and Chemical Engineering Construction road 46th Xinxiang CHINA
| | - Liang Li
- Soochow University School of Physical Science and Technology No.1 Shizi Street Suzhou CHINA
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40
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Pal D, Maity D, Sarkar A, Sarkar D, Khan GG. Effect of defect-rich Co-CeOx OER cocatalyst on the photocarrier dynamics and electronic structure of Sb-doped TiO2 nanorods photoanode. J Colloid Interface Sci 2022; 620:209-220. [DOI: 10.1016/j.jcis.2022.04.007] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2022] [Revised: 03/28/2022] [Accepted: 04/01/2022] [Indexed: 01/20/2023]
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41
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Meng L, Cheng C, Long R, Xu W, Li S, Tian W, Li L. Synergistic effect of atomic layer deposition-assisted cocatalyst and crystal facet engineering in SnS2 nanosheet for solar water oxidation. Sci Bull (Beijing) 2022; 67:1562-1571. [DOI: 10.1016/j.scib.2022.07.003] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2022] [Revised: 06/17/2022] [Accepted: 06/30/2022] [Indexed: 01/01/2023]
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42
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Wang P, Ding C, Li D, Cao Y, Li Z, Wang X, Shi J, Li C. Coupling effect between hole storage and interfacial charge transfer over ultrathin CoPi-modified hematite photoanodes. Dalton Trans 2022; 51:9247-9255. [PMID: 35695236 DOI: 10.1039/d2dt00765g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Understanding the functionality of the modification layer in regulating the charge transfer process at the semiconductor/electrolyte interface is of great significance to the rational design of photoelectrocatalytic water oxidation systems. Herein, by systematically investigating and comparing the charge transfer kinetics behaviors over ferrihydrite (Fh)- and cobalt phosphate (CoPi)-modified hematite (Fe2O3) photoanodes, we unveiled the essential relation between photocurrent enhancement and the charge transfer process. With the hole-storage material Fh as a reference, it was found that CoPi demonstrates high hole-storage capacity at a low bias region (<1.0 V vs. RHE) due to the effective release of Fermi level pinning. Afterwards, the stored holes would be timely injected into the electrolyte for water oxidation, caused by the enhanced charge separation in the presence of CoPi. In contrast, the decoration of Fh can only slightly passivate the surface states and promote hole injection in the high potential region. Subsequently, superior hole-storage capacity in the low-potential region is recognized as a crucial factor for photocurrent enhancement. These combined results provide new insights into the understanding of interfacial charge transfer kinetics.
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Affiliation(s)
- Pengpeng 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. .,University of Chinese Academy of Sciences, Beijing 100049, China
| | - Chunmei Ding
- 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, Beijing 100049, China
| | - Dongfeng 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, Beijing 100049, China
| | - Yimeng Cao
- 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.
| | - Zheng 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.
| | - Xiuli 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. .,University of Chinese Academy of Sciences, Beijing 100049, China
| | - Jingying Shi
- 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, Beijing 100049, 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, Beijing 100049, China
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Ma H, Chen W, Fan Q, Ye C, Zheng M, Wang J. Regulating Sn self-doping and boosting solar water splitting performance of hematite nanorod arrays grown on fluorine-doped tin oxide via low-level Hf doping. J Colloid Interface Sci 2022; 625:585-595. [PMID: 35751984 DOI: 10.1016/j.jcis.2022.06.055] [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: 02/13/2022] [Revised: 06/02/2022] [Accepted: 06/12/2022] [Indexed: 11/16/2022]
Abstract
Hematite (α-Fe2O3) nanorod arrays grown on fluorine-doped tin oxide (FTO) substrate exhibit outstanding solar water splitting efficiency, benefiting from Sn self-doping induced by high-temperature annealing. However, this Sn self-doping couldn't be freely controlled without changing the optimized annealing conditions, which limits the further improvement of their photoelectrochemical (PEC) properties. Here, we report a facile hydrothermal synthesis with subsequent annealing approach to regulate the Sn diffusion via hafnium (Hf) doping as well as enhance the PEC performance of hematite photoanode. Upon increasing the Hf doping concentration, the Sn self-doping content was continuously suppressed. The very low doping-level of Hf (i.e., atomic Hf/Fe = 0.13 ∼ 1.54%) was sufficient for enhancing the electrical conductivity. The Hf-doped α-Fe2O3 with the optimized dopant concentration (Hf/Fe = 1.34%, denoted as 0.25-Hf-Fe2O3) showed a photocurrent density of 1.79 mA/cm2 at 1.23 V vs. RHE, 70% higher than that of the Sn self-doped one (Pristine-Fe2O3). The donor density of 0.25-Hf-Fe2O3 increased 2.5 times compared to Pristine-Fe2O3 while its space-charge resistance and charge transfer resistance declined by 40% and 22%, respectively, verifying Hf doping improves the charge carrier density and accelerates the charge transfer for solar water oxidation. We offered here a prospective dopant alternative for preparing superior hematite-based photoanode.
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Affiliation(s)
- Haiqing Ma
- College of Materials Science and Engineering, Shenzhen University, Shenzhen 518071, China; College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, China
| | - Wenxiao Chen
- College of Materials Science and Engineering, Shenzhen University, Shenzhen 518071, China
| | - Qikui Fan
- College of Materials Science and Engineering, Shenzhen University, Shenzhen 518071, China
| | - Chenliang Ye
- College of Materials Science and Engineering, Shenzhen University, Shenzhen 518071, China
| | - Meng Zheng
- College of Materials Science and Engineering, Shenzhen University, Shenzhen 518071, China.
| | - Jin Wang
- College of Materials Science and Engineering, Shenzhen University, Shenzhen 518071, China.
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44
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Bunch of Grape-Like Shape PANI/Ag2O/Ag Nanocomposite Photocatalyst for Hydrogen Generation from Wastewater. ADSORPT SCI TECHNOL 2022. [DOI: 10.1155/2022/4282485] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Polyaniline (PANI) and PANI/Ag2O/Ag composites I and II were prepared under different AgNO3 oxidant concentrations using the oxidative photopolymerization method. The chemical structure and optical, electrical, and morphological properties were determined for the prepared nanocomposite. The PANI/Ag2O/Ag composite II has the optimum optical properties, in which the bandgaps of PANI, composite I, and composite II are 3.02, 1.71, and 1.68 eV, respectively, with the morphology of a bunch of grape-like shapes with average particles sizes of 25 nm. Under the optimum optical properties, glass/PANI/Ag2O/Ag composite II electrode is used for hydrogen generation from sewage water. The measurements are carried out from a three-electrode cell under a xenon lamp. The effects of light wavelengths and temperature on the produced current density (
) are mentioned. Under the applied voltage (at 30°C), the current density values (
) increase from 0.003 to 0.012 mA.cm-2 in dark and light, respectively. While increasing the temperature,
values increase to 0.032 mAcm-2 at 60°C. The thermodynamic parameters are calculated, in which the activation energy (
), enthalpy (
), and entropy (
) values are 27.1 kJ·mol-1, 24.5 J mol-1, and 140.5 J K-1 mol-1, respectively. Finally, a simple mechanism for the produced hydrogen generation rate is mentioned. The prepared electrode is a very cheap (1$ for
) electrode.
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45
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Zhang H, Ahn CW, Park JY, Ok JW, Sung JY, Jin JS, Kim HG, Lee JS. Healing Ion-Implanted Semiconductors by Hybrid Microwave Annealing: Activation of Nitrogen-Implanted TiO 2. J Phys Chem Lett 2022; 13:3878-3885. [PMID: 35470660 DOI: 10.1021/acs.jpclett.2c00220] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
In order to recover the damaged structure of a nitrogen-implanted TiO2 (N-I-TiO2) photoanode, hybrid microwave annealing (HMA) is proposed as an alternative postannealing process instead of conventional thermal annealing (CTA). Compared to CTA, HMA provides distinctive advantages: (i) facile transformation of the interstitial N-N states into substitutional N-Ti states, (ii) better preservation of the ion-implanted nitrogen in TiO2, and (iii) effective alleviation of lattice strain and reconstruction of the broken bonds. As a result, the HMA-activated photoanode improves the photocurrent density by a factor of ∼3.2 from 0.29 to 0.93 mA cm-2 at 1.23 VRHE and the incident photon-to-current conversion efficiency (IPCE) from ∼2.9% to ∼10.5% at 430 nm relative to those of the as-prepared N-I-TiO2 photoanode in photoelectrochemical water oxidation, which are much better than those of the CTA-activated photoanode (0.58 mA cm-2 at 1.23 VRHE and IPCE of 5.7% at 430 nm), especially in the visible light region (≥420 nm).
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Affiliation(s)
- Hemin Zhang
- College of Materials Science and Engineering, Sichuan University, Engineering Research Center of Alternative Energy Materials and Devices, Ministry of Education, Chengdu 610065, China
| | - Chang Won Ahn
- Department of Physics, University of Ulsan, Ulsan, 680-749, Republic of Korea
| | - Jin Yong Park
- Busan Center, Korea Basic Science Institute, Busan, 609-735, Republic of Korea
| | - Jung-Woo Ok
- Busan Center, Korea Basic Science Institute, Busan, 609-735, Republic of Korea
| | - Ji Yeong Sung
- Busan Center, Korea Basic Science Institute, Busan, 609-735, Republic of Korea
| | - Jong Sung Jin
- Busan Center, Korea Basic Science Institute, Busan, 609-735, Republic of Korea
| | - Hyun Gyu Kim
- Busan Center, Korea Basic Science Institute, Busan, 609-735, Republic of Korea
| | - Jae Sung Lee
- School of Energy and Chemical Engineering, Ulsan National Institute of Science and Technology, 50 UNIST-gil, Ulsan 44919, Republic of Korea
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46
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Banbela HM, Alharbi LM, Al-Dahiri RH, Jaremko M, Abdel Salam M. Preparation, Characterization, and Electrochemical Performance of the Hematite/Oxidized Multi-Walled Carbon Nanotubes Nanocomposite. Molecules 2022; 27:molecules27092708. [PMID: 35566063 PMCID: PMC9102378 DOI: 10.3390/molecules27092708] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2022] [Revised: 04/10/2022] [Accepted: 04/19/2022] [Indexed: 11/16/2022] Open
Abstract
In this research work, a hematite (α-Fe2O3) nanoparticle was prepared and then mixed with oxidized multi-walled carbon nanotubes (O-MWCNT) to form a stable suspension of an α-Fe2O3/O-MWCNTs nanocomposite. Different characterization techniques were used to explore the chemical and physical properties of the α-Fe2O3/O-MWCNTs nanocomposite, including XRD, FT-IR, UV-Vis, and SEM. The results revealed the successful formation of the α-Fe2O3 nanoparticles, and the oxidation of the MWCNT, as well as the formation of stable α-Fe2O3/O-MWCNTs nanocomposite. The electrochemical behaviour of the α-Fe2O3/O-MWCNTs nanocomposite was investigated using cyclic voltammetry (CV) and linear sweep voltammetry (LSV), and the results revealed that modification of α-Fe2O3 nanoparticles with O-MWCNTs greatly enhanced electrochemical performance and capacitive behaviour, as well as cycling stability.
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Affiliation(s)
- Hadeel M. Banbela
- Department of Chemistry, Faculty of Science, King Abdulaziz University, P.O. Box 80200, Jeddah 21589, Saudi Arabia; (H.M.B.); (L.M.A.)
- Department of Chemistry, College of Science and Arts at Khulis, University of Jeddah, P.O. Box 355, Jeddah 21959, Saudi Arabia
| | - Laila M. Alharbi
- Department of Chemistry, Faculty of Science, King Abdulaziz University, P.O. Box 80200, Jeddah 21589, Saudi Arabia; (H.M.B.); (L.M.A.)
| | - Reema H. Al-Dahiri
- Department of Chemistry, College of Science, University of Jeddah, P.O. Box 34, Jeddah 21959, Saudi Arabia;
| | - Mariusz Jaremko
- Smart-Health Initiative (SHI), Red Sea Research Center (RSRC), Biological and Environmental Science and Engineering (BESE) Division, King Abdullah University of Science and Technology (KAUST), P.O. Box 4700, Thuwal 23955-6900, Saudi Arabia;
| | - Mohamed Abdel Salam
- Department of Chemistry, Faculty of Science, King Abdulaziz University, P.O. Box 80200, Jeddah 21589, Saudi Arabia; (H.M.B.); (L.M.A.)
- Correspondence: ; Tel.: +966-541886660; Fax: +966-2-6952292
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Maity D, Pal D, Karmakar K, Rakshit R, Khan GG, Mandal K. Dual co-catalysts activated hematite nanorods with low turn-on potential and enhanced charge collection for efficient solar water oxidation. NANOTECHNOLOGY 2022; 33:265402. [PMID: 35303734 DOI: 10.1088/1361-6528/ac5f2f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/24/2022] [Accepted: 03/18/2022] [Indexed: 06/14/2023]
Abstract
Hematite (α-Fe2O3) photoanode suffers from significant photocarrier recombination and sluggish water oxidation kinetics for photoelectrochemical water splitting. To address these challenges, this work demonstrates the construction of dual co-catalysts modified Fe2O3nanorods photoanode by strategically incorporating CoPi and Co(OH)xfor photoelectrochemical water oxidation. The Fe2O3/CoPi/Co(OH)xnanorods photoanode exhibits the lowest ever turn-on potential of 0.4VRHE(versus reversible hydrogen electrode) and a photocurrent density of 0.55 mA cm-2at 1.23VRHE, 358% higher than that of pristine Fe2O3nanorods. The dual co-catalysts modification enhances the light-harvesting efficiency, surface photovoltage and hole transfer kinetics of the hybrid photoanode. The dual co-catalyst coupling also increases the carrier density and significantly reduces the depletion width (1.9 nm), resulting in improved conductivity and favorable band bending, boosting photogenerated hole transfer efficiency for water oxidation.
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Affiliation(s)
- Dipanjan Maity
- Department of Condensed Matter Physics and Material Sciences, S. N. Bose National Centre for Basic Sciences, Block JD, Sector-III, Salt Lake, Kolkata 700 106, India
| | - Debashish Pal
- Department of Material Science and Engineering, Tripura University (A Central University), Suryamaninagar, Agartala, Tripura 799022, India
| | - Keshab Karmakar
- School of Applied and Interdisciplinary Sciences, Indian Association for the Cultivation of Science, 2A and 2B Raja S. C. Mullick Road, Kolkata 700 032, India
| | - Rupali Rakshit
- Solid State and Structural Chemistry Unit, Indian Institute of Science, C V Raman Road, Bengaluru, Karnataka 560012, India
| | - Gobinda Gopal Khan
- Department of Material Science and Engineering, Tripura University (A Central University), Suryamaninagar, Agartala, Tripura 799022, India
| | - Kalyan Mandal
- Department of Condensed Matter Physics and Material Sciences, S. N. Bose National Centre for Basic Sciences, Block JD, Sector-III, Salt Lake, Kolkata 700 106, India
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48
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Kang K, Zhang H, Kim JH, Byun WJ, Lee JS. An in situ fluorine and ex situ titanium two-step co-doping strategy for efficient solar water splitting by hematite photoanodes. NANOSCALE ADVANCES 2022; 4:1659-1667. [PMID: 36134374 PMCID: PMC9418710 DOI: 10.1039/d2na00029f] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/13/2022] [Accepted: 02/11/2022] [Indexed: 06/16/2023]
Abstract
A unique two-step co-doping strategy of in situ fluorine doping followed by ex situ titanium doping enhances the performance of the hematite photoanode in photoelectrochemical water splitting much more effectively than single-step co-doping strategies that are either all in situ or all ex situ. The optimized fluorine, titanium co-doped Fe2O3 photoanode without any cocatalyst achieves 1.61 mA cm-2 at 1.23 VRHE under 100 mW cm-2 solar irradiation, which is ∼2 and 3 times those of titanium or fluorine singly-doped Fe2O3 photoanodes, respectively. The promotional effect is attributed to the synergy of the two dopants, in which the doped fluorine anion substitutes oxygen of Fe2O3 to increase the positive charges of iron sites, while the doped titanium cation substitutes iron to increase free electrons. Moreover, excess titanium on the surface suppresses the drain of in situ doped fluorine and agglomeration of hematite during the high-temperature annealing process, and passivates the surface trap states to further promote the synergy effects of the two dopants.
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Affiliation(s)
- Kyoungwoong Kang
- School of Energy and Chemical Engineering, Ulsan National Institute of Science and Technology (UNIST) 50 UNIST-gil Ulsan 44919 Republic of Korea
| | - Hemin Zhang
- College of Materials Science and Engineering, Sichuan University Chengdu 610065 China
| | - Jeong Hun Kim
- School of Energy and Chemical Engineering, Ulsan National Institute of Science and Technology (UNIST) 50 UNIST-gil Ulsan 44919 Republic of Korea
| | - Woo Jin Byun
- School of Energy and Chemical Engineering, Ulsan National Institute of Science and Technology (UNIST) 50 UNIST-gil Ulsan 44919 Republic of Korea
| | - Jae Sung Lee
- School of Energy and Chemical Engineering, Ulsan National Institute of Science and Technology (UNIST) 50 UNIST-gil Ulsan 44919 Republic of Korea
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49
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Li S, Xu W, Meng L, Tian W, Li L. Recent Progress on Semiconductor Heterojunction‐Based Photoanodes for Photoelectrochemical Water Splitting. SMALL SCIENCE 2022. [DOI: 10.1002/smsc.202100112] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Affiliation(s)
- Shengnan Li
- School of Physical Science and Technology Jiangsu Key Laboratory of Thin Films Center for Energy Conversion Materials & Physics (CECMP) Soochow University Suzhou 215006 P. R. China
| | - Weiwei Xu
- School of Physical Science and Technology Jiangsu Key Laboratory of Thin Films Center for Energy Conversion Materials & Physics (CECMP) Soochow University Suzhou 215006 P. R. China
| | - Linxing Meng
- School of Physical Science and Technology Jiangsu Key Laboratory of Thin Films Center for Energy Conversion Materials & Physics (CECMP) Soochow University Suzhou 215006 P. R. China
| | - Wei Tian
- School of Physical Science and Technology Jiangsu Key Laboratory of Thin Films Center for Energy Conversion Materials & Physics (CECMP) Soochow University Suzhou 215006 P. R. China
| | - Liang Li
- School of Physical Science and Technology Jiangsu Key Laboratory of Thin Films Center for Energy Conversion Materials & Physics (CECMP) Soochow University Suzhou 215006 P. R. China
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50
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Wang Z, Gu Y, Zheng L, Hou J, Zheng H, Sun S, Wang L. Machine Learning Guided Dopant Selection for Metal Oxide-Based Photoelectrochemical Water Splitting: The Case Study of Fe 2 O 3 and CuO. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2022; 34:e2106776. [PMID: 34964178 DOI: 10.1002/adma.202106776] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/27/2021] [Revised: 11/22/2021] [Indexed: 06/14/2023]
Abstract
Doping is an effective strategy for tuning metal oxide-based semiconductors for solar-driven photoelectrochemical (PEC) water splitting. Despite decades of extensive research effort, the dopant selection is still largely dependent on a trial-and-error approach. Machine learning (ML) is promising in providing predictable insights on the dopant selection for high-performing PEC systems because it can uncover correlations from the seemingly ambiguous linkages between vast features of dopants and the PEC performance of doped photoelectrodes. Herein, the authors successfully build ML model to predict the doping effect of 17 metal dopants into hematite (Fe2 O3 ), a prototype photoelectrode material. Their findings disclose the critical parameters from the 10 intrinsic features of each dopant. The model is further experimentally validated by the coherent prediction on Y and La dopants' behaviors. Further interpretation of the ML model suggests that the chemical state is the most significant selection criteria, meanwhile, dopants with higher metal-oxygen bond formation enthalpy and larger ionic radius are favored in improving the charge separation and transfer (CST) in the Fe2 O3 photoanodes. The generic feature of this ML guided selection criteria has been further extended to CuO-based photoelectrodes showing improved CST by alkaline metal ions doping.
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Affiliation(s)
- Zhiliang Wang
- School of Chemical Engineering, the University of Queensland, St Lucia, Queensland, 4072, Australia
- Nanomaterials Centre, Australian Institute for Bioengineering and Nanotechnology, The University of Queensland, St Lucia, Queensland, 4072, Australia
| | - Yuang Gu
- School of Chemical Engineering, the University of Queensland, St Lucia, Queensland, 4072, Australia
| | - Lingxia Zheng
- State Key Laboratory Breeding Base of Green Chemistry Synthesis Technology, Department of Applied Chemistry, Zhejiang University of Technology, Hangzhou, 310032, P. R. China
| | - Jingwei Hou
- School of Chemical Engineering, the University of Queensland, St Lucia, Queensland, 4072, Australia
| | - Huajun Zheng
- State Key Laboratory Breeding Base of Green Chemistry Synthesis Technology, Department of Applied Chemistry, Zhejiang University of Technology, Hangzhou, 310032, P. R. China
| | - Shijing Sun
- Department of Mechanical Engineering, Massachusetts Institute of Technology, Cambridge, MA, 02139, USA
- Toyota Research Institute, Los Altos, CA, 94022, USA
| | - Lianzhou Wang
- School of Chemical Engineering, the University of Queensland, St Lucia, Queensland, 4072, Australia
- Nanomaterials Centre, Australian Institute for Bioengineering and Nanotechnology, The University of Queensland, St Lucia, Queensland, 4072, Australia
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