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Lu X, Si R, Wang X, Zheng S, Zhao X, Xu W, Pan X, Yi Z. Strain-Induced Photocatalytic H 2 Production over BiVO 4 in Pure Water without Any Cocatalyst. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2024; 40:17807-17814. [PMID: 39102744 DOI: 10.1021/acs.langmuir.4c02315] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/07/2024]
Abstract
In this study, BiVO4 nanosheets (BiVO4-NS) were prepared by a facile hydrothermal method. It is found that sonication-induced strain can effectively promote the H2 production over BiVO4-NS in the presence of pure water without any cocatalysts. With the assistance of the sonication, the H2 production over BiVO4-NS is 1.344 mmol·g-1 after 3 h simulated sunlight irradiation, which is 24.8 times higher than that of BiVO4-NS without sonication (0.054 mmol·g-1). In addition, the products of water oxidation are determined to be hydroxyl radicals and hydrogen peroxide. Moreover, BiVO4-NS also shows obviously enhanced photoactivity than that of the commercially available BiVO4 nanoparticles (BiVO4-C). The improved photoactivity of BiVO4-NS is attributed to the effective charge separation and low charge transfer resistance. The underlying mechanism of sonication-promoted water splitting is investigated by a variety of controlled experiments. The results show that ultrasonic waves can produce obvious strain inside the sample, which results in lattice distortion of BiVO4. Therefore, the conduction band of BiVO4 is obviously negative shifted, which is beneficial for H2 production. In addition, the strain in BiVO4 also produces local polarization of the sample, which effectively promotes the charge transfer and separation process. It is hoped that our study could provide a new strategy for achieving efficient photocatalytic water splitting.
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Affiliation(s)
- Xiaoxiao Lu
- College of Chemical Engineering and Materials, Quanzhou Normal University, Quanzhou 362000, China
| | - Ruiru Si
- Institute of Quality Standards & Testing Technology for Agro-Products, Fujian Academy of Agricultural Sciences/Fujian Key Laboratory of Agro-Products Quality and Safety, Fuzhou 350003, China
| | - Xiangge Wang
- College of Chemical Engineering and Materials, Quanzhou Normal University, Quanzhou 362000, China
| | - Shifan Zheng
- College of Chemical Engineering and Materials, Quanzhou Normal University, Quanzhou 362000, China
| | - Xiaojing Zhao
- College of Chemical Engineering and Materials, Quanzhou Normal University, Quanzhou 362000, China
| | - Wentao Xu
- College of Chemical Engineering and Materials, Quanzhou Normal University, Quanzhou 362000, China
| | - Xiaoyang Pan
- College of Chemical Engineering and Materials, Quanzhou Normal University, Quanzhou 362000, China
| | - Zhiguo Yi
- State Key Lab of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, China
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2
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Sun X, Wang Y, Song M, Liu F, Lan DH, Yin SF, Chen P. Local polarization redistribution in Zn mIn 2S 3+m for the enhancing synergetic piezo-photocatalytic overall water splitting. J Colloid Interface Sci 2024; 665:999-1006. [PMID: 38579390 DOI: 10.1016/j.jcis.2024.03.199] [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: 02/12/2024] [Revised: 03/22/2024] [Accepted: 03/29/2024] [Indexed: 04/07/2024]
Abstract
Piezo-photocatalytic water (deuterium oxide) decomposition is a promising strategy for realizing renewable energy, but the manipulation of the polar center remains a big challenge. This study uses a simple low-temperature hydrothermal process to successfully manufacture ZnmIn2Sm+3 (m = 1-3) (ZnIn2S4, Zn2In2S5 and Zn3In2S6). Incorporating both experimental and theoretical analyses, the structural contraction and local polarization of the Zn-S bond in Zn2In2S5 enhance the piezoelectric response and surface charge accumulation, which facilitate charge transfer and reduce the activation energy of water. Remarkably, Zn2In2S5 exhibits excellent piezoelectric photocatalytic total water splitting performance (H2/O2: 4284.72/1967.00 μmol g-1h-1), which is 1.77 times that of photocatalytic performance. Moreover, a significant enhancement in D2O splitting performance can be obtained for the optimized Zn2In2S5. Our work offers valuable insights into the disclosure of local polarization in catalysts for enhancing piezo-photocatalytic overall water splitting.
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Affiliation(s)
- Xiaomei Sun
- Provincial Guizhou Key Laboratory of Green Chemical and Clean Energy Technology, School of Chemistry and Chemical Engineering, Guizhou University, Guiyang 550025, Guizhou, China
| | - Yi Wang
- Provincial Guizhou Key Laboratory of Green Chemical and Clean Energy Technology, School of Chemistry and Chemical Engineering, Guizhou University, Guiyang 550025, Guizhou, China
| | - Meiyang Song
- Provincial Guizhou Key Laboratory of Green Chemical and Clean Energy Technology, School of Chemistry and Chemical Engineering, Guizhou University, Guiyang 550025, Guizhou, China
| | - Fei Liu
- Provincial Guizhou Key Laboratory of Green Chemical and Clean Energy Technology, School of Chemistry and Chemical Engineering, Guizhou University, Guiyang 550025, Guizhou, China.
| | - Dong-Hui Lan
- Hunan Provincial Key Laboratory of Environmental Catalysis and Waste Rechemistry, College of Materials and Chemical Engineering, Hunan Institute of Engineering, Xiangtan, Hunan 411104, PR China.
| | - Shuang-Feng Yin
- College of Chemistry and Chemical Engineering, Central South University of Forestry and Technology, Changsha 410004, PR China; Advanced Catalytic Engineering Research Center of the Ministry of Education, State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, PR China
| | - Peng Chen
- Provincial Guizhou Key Laboratory of Green Chemical and Clean Energy Technology, School of Chemistry and Chemical Engineering, Guizhou University, Guiyang 550025, Guizhou, China.
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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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Ito K, Noda K. Highly efficient hydrogen production and selective CO 2 reduction by the C 3N 5 photocatalyst using only visible light. Phys Chem Chem Phys 2023; 26:153-160. [PMID: 38086634 DOI: 10.1039/d3cp04431a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2023]
Abstract
The production of energy sources by metal-free photocatalysts based on graphitic carbon nitride (g-C3N4) has garnered substantial attention. In this study, nitrogen-rich carbon nitride (C3N5) was successfully synthesized through the thermal polycondensation of 3-amino-1,2,4-triazole. The structural and physical characterization has suggested that a portion of the triazine rings, which constitute the structural framework of g-C3N4, may be substituted with five-membered rings in C3N5. Furthermore, the polymerization of C3N5 proceeded more extensively than that of g-C3N4 from melamine precursors. The increased nitrogen content in C3N5 resulted in a heightened number of π-electrons and a narrowed energy bandgap, with the potential of the valence band maximum being negatively shifted. Additionally, photocatalytic assessments encompassing nitro blue tetrazolium reduction, H2 production from triethanolamine aqueous solution, and CO2 reduction in the liquid phase were performed. All findings demonstrated that C3N5 exhibits significantly superior photocatalytic properties compared to g-C3N4. It is particularly noteworthy that C3N5 selectively generates methanol and H2 from oversaturated CO2 solutions under visible light irradiation, while g-C3N4 selectively generates formaldehyde. These outcomes strongly indicate that C3N5 serves as a metal-free, visible-light-responsive photocatalyst, capable of contributing to both the production of renewable energy sources and the reduction of greenhouse effect gases.
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Affiliation(s)
- Kosei Ito
- Department of Electronics and Electrical Engineering, Keio University, 3-14-1, Hiyoshi, Kohoku-ku, Yokohama, 223-8522, Japan.
| | - Kei Noda
- Department of Electronics and Electrical Engineering, Keio University, 3-14-1, Hiyoshi, Kohoku-ku, Yokohama, 223-8522, Japan.
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Mao X, Qin Z, Ge S, Rong C, Zhang B, Xuan F. Strain engineering of electrocatalysts for hydrogen evolution reaction. MATERIALS HORIZONS 2023; 10:340-360. [PMID: 36541087 DOI: 10.1039/d2mh01171a] [Citation(s) in RCA: 12] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
As the key half reaction of water-splitting electrolysis, the hydrogen evolution reaction (HER) that occurs at the cathode directly determines the overall efficiency of hydrogen production. To improve the efficiency of electrochemical water splitting for hydrogen generation, efficient and robust catalysts need to be developed. Strain engineering, which represents an effective and promising category of strategies, can regulate the electronic structures of catalysts by modulating the lattice strain and ultimately optimizing the HER dynamics. This work critically reviews the recent progress of strain engineering in HER and provides future perspectives for this area. The methods and characterization techniques are also introduced in detail. Hopefully this review can provide guidelines for the design and manufacturing of advanced catalysts for HER and other heterogeneous catalysis reactions such as chemical sensing, CO2 reduction and NH3 synthesis.
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Affiliation(s)
- Xinyuan Mao
- Shanghai Key Laboratory of Intelligent Sensing and Detection Technology, East China University of Science and Technology, Shanghai 200237, P. R. China.
- Key Laboratory of Pressure Systems and Safety of Ministry of Education, East China University of Science and Technology, Shanghai 200237, P. R. China
- School of Mechanical and Power Engineering, East China University of Science and Technology, Shanghai 200237, P. R. China
| | - Zhuhui Qin
- Shanghai Key Laboratory of Intelligent Sensing and Detection Technology, East China University of Science and Technology, Shanghai 200237, P. R. China.
- Key Laboratory of Pressure Systems and Safety of Ministry of Education, East China University of Science and Technology, Shanghai 200237, P. R. China
- School of Mechanical and Power Engineering, East China University of Science and Technology, Shanghai 200237, P. R. China
| | - Shundong Ge
- Shanghai Key Laboratory of Intelligent Sensing and Detection Technology, East China University of Science and Technology, Shanghai 200237, P. R. China.
- Key Laboratory of Pressure Systems and Safety of Ministry of Education, East China University of Science and Technology, Shanghai 200237, P. R. China
- School of Mechanical and Power Engineering, East China University of Science and Technology, Shanghai 200237, P. R. China
| | - Chao Rong
- Shanghai Key Laboratory of Intelligent Sensing and Detection Technology, East China University of Science and Technology, Shanghai 200237, P. R. China.
- Key Laboratory of Pressure Systems and Safety of Ministry of Education, East China University of Science and Technology, Shanghai 200237, P. R. China
- School of Mechanical and Power Engineering, East China University of Science and Technology, Shanghai 200237, P. R. China
| | - Bowei Zhang
- Shanghai Key Laboratory of Intelligent Sensing and Detection Technology, East China University of Science and Technology, Shanghai 200237, P. R. China.
- Key Laboratory of Pressure Systems and Safety of Ministry of Education, East China University of Science and Technology, Shanghai 200237, P. R. China
- School of Mechanical and Power Engineering, East China University of Science and Technology, Shanghai 200237, P. R. China
| | - Fuzhen Xuan
- Shanghai Key Laboratory of Intelligent Sensing and Detection Technology, East China University of Science and Technology, Shanghai 200237, P. R. China.
- Key Laboratory of Pressure Systems and Safety of Ministry of Education, East China University of Science and Technology, Shanghai 200237, P. R. China
- School of Mechanical and Power Engineering, East China University of Science and Technology, Shanghai 200237, P. R. China
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6
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Li Y, Wang L, Zhang F, Zhang W, Shao G, Zhang P. Detecting and Quantifying Wavelength-Dependent Electrons Transfer in Heterostructure Catalyst via In Situ Irradiation XPS. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2023; 10:e2205020. [PMID: 36373728 PMCID: PMC9896054 DOI: 10.1002/advs.202205020] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/01/2022] [Revised: 10/19/2022] [Indexed: 05/03/2023]
Abstract
The identity of charge transfer process at the heterogeneous interface plays an important role in improving the stability, activity, and selectivity of heterojunction catalysts. And, in situ irradiation X-ray photoelectron spectroscopy (XPS) coupled with UV light optical fiber measurement setup is developed to monitor and observe the photoelectron transfer process between heterojunction. However, the in-depth relationship of binding energy and irradiation light wavelength is missing based on the fact that the incident light is formed by coupling light with different wavelengths. Furthermore, a quantitative understanding of the charge transfer numbers and binding energy remains elusive. Herein, based on the g-C3 N4 /SnO2 model catalyst, a wavelength-dependent Boltzmann function to describe the changes of binding energy and wavelength through utilizing a continuously adjustable monochromatic light irradiation XPS technique is established. Using this method, this study further reveals that the electrons transfer number can be readily calculated forming an asymptotic model. This methodology provides a blueprint for deep understanding of the charge-transfer rules in heterojunction and facilitates the future development of highly active advanced catalysts.
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Affiliation(s)
- Yukun Li
- State Center for International Cooperation on Designer Low‐Carbon and Environmental Materials (CDLCEM)School of Materials Science and EngineeringZhengzhou UniversityZhengzhou450001China
| | - Li Wang
- State Center for International Cooperation on Designer Low‐Carbon and Environmental Materials (CDLCEM)School of Materials Science and EngineeringZhengzhou UniversityZhengzhou450001China
| | - Fei Zhang
- State Center for International Cooperation on Designer Low‐Carbon and Environmental Materials (CDLCEM)School of Materials Science and EngineeringZhengzhou UniversityZhengzhou450001China
| | - Wentao Zhang
- State Center for International Cooperation on Designer Low‐Carbon and Environmental Materials (CDLCEM)School of Materials Science and EngineeringZhengzhou UniversityZhengzhou450001China
| | - Guosheng Shao
- State Center for International Cooperation on Designer Low‐Carbon and Environmental Materials (CDLCEM)School of Materials Science and EngineeringZhengzhou UniversityZhengzhou450001China
| | - Peng Zhang
- State Center for International Cooperation on Designer Low‐Carbon and Environmental Materials (CDLCEM)School of Materials Science and EngineeringZhengzhou UniversityZhengzhou450001China
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7
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Vacancy-induced tensile strain of CdS/Bi2S3 as a highly performance and robust photocatalyst for hydrogen evolution. J Colloid Interface Sci 2023; 630:224-234. [DOI: 10.1016/j.jcis.2022.10.056] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2022] [Revised: 10/11/2022] [Accepted: 10/13/2022] [Indexed: 11/07/2022]
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8
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Semiconductor photocatalysts: A critical review highlighting the various strategies to boost the photocatalytic performances for diverse applications. Adv Colloid Interface Sci 2023; 311:102830. [PMID: 36592501 DOI: 10.1016/j.cis.2022.102830] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2022] [Revised: 11/23/2022] [Accepted: 12/23/2022] [Indexed: 12/27/2022]
Abstract
The photocatalytic technology illustrates an eco-friendly and sustainable route to overcome environmental and energy issues. The successful construction of a photocatalyst depends on four key elements: light absorption ability, the density of active sites, redox capacity, and photoinduced electron-hole recombination rate. Sincemost of intrinsic semiconductor photocatalysts cannot meet all these requirements, they are often modified to boost their photocatalytic properties. Many strategies have been adopted to design novel and efficient photocatalysts for diverse applications. Herein, we review the most efficient of these strategies and methods focused on effectively overcoming the efficiency limitations of photocatalysts to promote their large-scale application. Subsequently, a particular aim is put on the most current studies for photocatalytic applications, including CO2 reduction, N2 fixation, H2 evolution, and pollutants degradation. Finally, key challenges and future perspectives in designing and implementing semiconductor photocatalysts for large-scale applications are discussed. Therefore, it is foreseen that this review will work as a guide for future research and provides a variety of strategies to develop novel and high-performance photocatalysts for various applications.
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9
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Preparation of ZnCo2O4/BiVO4 Z-Scheme heterostructures to enhance photocatalytic performance in organic pollutant and antibiotic removal. Colloids Surf A Physicochem Eng Asp 2022. [DOI: 10.1016/j.colsurfa.2022.130165] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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10
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Liu T, Xiao W, Luo Z, Bi J, Zhang Y, Wang G, Wang D, Liu X. Regulating on photocatalytic overall water splitting performance of gallium thiophosphate based on transition metal doping: A first-principles study. MOLECULAR CATALYSIS 2022. [DOI: 10.1016/j.mcat.2022.112765] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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Shao Z, Cheng J, Zhang Y, Peng Y, Shi L, Zhong M. Comprehension of the Synergistic Effect between m&t-BiVO 4/TiO 2-NTAs Nano-Heterostructures and Oxygen Vacancy for Elevated Charge Transfer and Enhanced Photoelectrochemical Performances. NANOMATERIALS (BASEL, SWITZERLAND) 2022; 12:4042. [PMID: 36432328 PMCID: PMC9692637 DOI: 10.3390/nano12224042] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/15/2022] [Revised: 11/09/2022] [Accepted: 11/09/2022] [Indexed: 06/16/2023]
Abstract
Through the utilization of a facile procedure combined with anodization and hydrothermal synthesis, highly ordered alignment TiO2 nanotube arrays (TiO2-NTAs) were decorated with BiVO4 with distinctive crystallization phases of monoclinic scheelite (m-BiVO4) and tetragonal zircon (t-BiVO4), favorably constructing different molar ratios and concentrations of oxygen vacancies (Vo) for m&t-BiVO4/TiO2-NTAs heterostructured nanohybrids. Simultaneously, the m&t-BiVO4/TiO2-NTAs nanocomposites significantly promoted photoelectrochemical (PEC) activity, tested under UV-visible light irradiation, through photocurrent density testing and electrochemical impedance spectra, which were derived from the positive synergistic effect between nanohetero-interfaces and Vo defects induced energetic charge transfer (CT). In addition, a proposed self-consistent interfacial CT mechanism and a convincing quantitative dynamic process (i.e., rate constant of CT) for m&t-BiVO4/TiO2-NTAs nanoheterojunctions are supported by time-resolved photoluminescence and nanosecond time-resolved transient photoluminescence spectra, respectively. Based on the scheme, the m&t-BiVO4/TiO2-NTAs-10 nanohybrids exhibited a photodegradation rate of 97% toward degradation of methyl orange irradiated by UV-visible light, 1.14- and 1.04-fold that of m&t-BiVO4/TiO2-NTAs-5 and m&t-BiVO4/TiO2-NTAs-20, respectively. Furthermore, the m&t-BiVO4/TiO2-NTAs-10 nanohybrids showed excellent PEC biosensing performance with a detection limit of 2.6 μM and a sensitivity of 960 mA cm-2 M-1 for the detection of glutathione. Additionally, the gas-sensing performance of m&t-BiVO4/TiO2-NTAs-10 is distinctly superior to that of m&t-BiVO4/TiO2-NTAs-5 and m&t-BiVO4/TiO2-NTAs-20 in terms of sensitivity and response speed.
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Affiliation(s)
- Zhufeng Shao
- College of Physical Science and Technology, Bohai University, Jinzhou 121000, China
| | - Jianyong Cheng
- College of Physical Science and Technology, Bohai University, Jinzhou 121000, China
| | - Yonglong Zhang
- College of Physical Science and Technology, Bohai University, Jinzhou 121000, China
| | - Yajing Peng
- College of Physical Science and Technology, Bohai University, Jinzhou 121000, China
| | - Libin Shi
- College of Physical Science and Technology, Bohai University, Jinzhou 121000, China
| | - Min Zhong
- College of Chemistry and Materials Engineering, Bohai University, Jinzhou 121000, China
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Kadam AN, Babu B, Lee SW, Kim J, Yoo K. Morphological guided sphere to dendrite BiVO 4 for highly efficient organic pollutant removal and photoelectrochemical performance under solar light. CHEMOSPHERE 2022; 305:135461. [PMID: 35764107 DOI: 10.1016/j.chemosphere.2022.135461] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/21/2022] [Revised: 06/06/2022] [Accepted: 06/21/2022] [Indexed: 06/15/2023]
Abstract
Monoclinic BiVO4 (m-BiVO4) has been reported as promising phase for solar light driven photocatalysis. However, in the case of morphology guided BiVO4 with different synthetic conditions maintaining the m-BiVO4 phase remains a substantial challenge for achieving an efficient photocatalyst driven by solar light. Herein, a simple hydrothermal approach was used to produce well-defined template free m-BiVO4 dendrites with distinct branches for photo catalytically removal of organic pollutant and photocurrent generation. The development of monoclinic dendrite BiVO4 was confirmed after comprehensive structural, morphological, and optical examinations. FE-SEM images of m-BiVO4 revealed transformation of spherical to dendritic morphology with distinct branches by simply changing the HNO3 to NaOH ratios from 2:1 to 2:2, which are named as BVO 2-1 and BVO 2-2, respectively. The BVO 2-2 dendrites exhibited improved activity of 98% towards methylene blue (MB) photodegradation upon simulated solar light irradiation. The BVO 2-2 dendrites photoelectrode showed an outstanding photocurrent density of 1.4245 mAcm-2 than that of the BVO 2-1 spherical photoelectrode (0.7367 mAcm-2). Enhanced photocatalytic and photoelectrochemical action, could be ascribed to the unique morphological changes provides photoactive sites, harvest more light utilization together with higher separation of e-/h+ pairs. Furthermore, photocatalytic mechanism is investigated based on scavenger trapping agent, valence band XPS, UV Visible DRS and PL study. Our findings could pave the way for the development of dendritic nanostructure photocatalysts with improved photocatalytic activity.
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Affiliation(s)
- Abhijit N Kadam
- Department of Chemical and Biological Engineering, Gachon University, San 65, Bokjeong-Dong, Sujeong-Gu, Seongnam City, Gyeonggi-do, 461-701, South Korea
| | - Bathula Babu
- School of Mechanical Engineering, Yeungnam University, Gyeongsan, 38541, South Korea.
| | - Sang-Wha Lee
- Department of Chemical and Biological Engineering, Gachon University, San 65, Bokjeong-Dong, Sujeong-Gu, Seongnam City, Gyeonggi-do, 461-701, South Korea.
| | - Jonghoon Kim
- Department of Electrical Engineering, Chungnam National University, Daejeon, 34134, South Korea.
| | - Kisoo Yoo
- School of Mechanical Engineering, Yeungnam University, Gyeongsan, 38541, South Korea.
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13
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Li C, Fan W, Chen S, Zhang F. Effective Charge Carrier Utilization of BiVO
4
for Solar Overall Water Splitting. Chemistry 2022; 28:e202201812. [DOI: 10.1002/chem.202201812] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2022] [Indexed: 11/06/2022]
Affiliation(s)
- Can Li
- School of Materials Science and Engineering National Institute for Advanced Materials Nankai University Tianjin 300350 China
| | - Wenjun Fan
- State Key Laboratory of Catalysis Dalian Institute of Chemical Physics Chinese Academy of Sciences Dalian National Laboratory for Clean Energy The Collaborative Innovation Center of Chemistry for Energy Materials (iChEM) Zhongshan Road 457 Dalian 116023 China
| | - Shanshan Chen
- School of Materials Science and Engineering National Institute for Advanced Materials Nankai University Tianjin 300350 China
| | - Fuxiang Zhang
- State Key Laboratory of Catalysis Dalian Institute of Chemical Physics Chinese Academy of Sciences Dalian National Laboratory for Clean Energy The Collaborative Innovation Center of Chemistry for Energy Materials (iChEM) Zhongshan Road 457 Dalian 116023 China
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14
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Dai D, Wu Y, Liu X, Xu Y, Guo Y, Zhang Q, Wang Z, Zheng Z, Liu Y, Cheng H, Dai Y, Huang B, Wang P. Facilitating space charge directional separation for enhancing photocatalytic CO 2 reduction over tetragonal BiVO 4. Catal Sci Technol 2022. [DOI: 10.1039/d2cy01200f] [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
Spatially separated Ag/MnOx cocatalysts are selectively loaded on BiVO4 by a photo-deposition method. The synergistic effect of the dual cocatalysts enables the optimal photocatalytic activity of the sample to be 3.1 times higher than that of pristine BiVO4.
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Affiliation(s)
- Dujuan Dai
- State Key Laboratory of Crystal Materials, Shandong University, Jinan 250100, China
| | - Yaqiang Wu
- State Key Laboratory of Crystal Materials, Shandong University, Jinan 250100, China
| | - Xiaolei Liu
- State Key Laboratory of Crystal Materials, Shandong University, Jinan 250100, China
| | - Yayang Xu
- State Key Laboratory of Crystal Materials, Shandong University, Jinan 250100, China
| | - Yuhao Guo
- State Key Laboratory of Crystal Materials, Shandong University, Jinan 250100, China
| | - Qianqian Zhang
- State Key Laboratory of Crystal Materials, Shandong University, Jinan 250100, China
| | - Zeyan Wang
- State Key Laboratory of Crystal Materials, Shandong University, Jinan 250100, China
| | - Zhaoke Zheng
- State Key Laboratory of Crystal Materials, Shandong University, Jinan 250100, China
| | - Yuanyuan Liu
- State Key Laboratory of Crystal Materials, Shandong University, Jinan 250100, China
| | - Hefeng Cheng
- State Key Laboratory of Crystal Materials, Shandong University, Jinan 250100, China
| | - Ying Dai
- School of Physics, Shandong University, Jinan 250100, China
| | - Baibiao Huang
- State Key Laboratory of Crystal Materials, Shandong University, Jinan 250100, China
| | - Peng Wang
- State Key Laboratory of Crystal Materials, Shandong University, Jinan 250100, China
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