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Wang H, Zhang X, Zhu H, Xiang G. Robust Bi-anchoring carbon dot/BiOCl sheet heterojunction photocatalysts toward superior photocatalytic activity. NANOSCALE 2024. [PMID: 38888799 DOI: 10.1039/d4nr01304b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/20/2024]
Abstract
BiOCl has attracted much attention due to its robust layered structure, excellent photocatalytic activity and nontoxicity. However, its practical application is hindered by its narrowband UV photoresponse and rapid recombination of photocarriers. Herein, zero-dimensional Bi-anchoring carbon quantum dot (Bi-CD)/two-dimensional BiOCl heterojunction (Bi-CD/BiOCl) photocatalysts are designed and synthesized by a facile hydrothermal method. Under 190-1100 nm broadband light irradiation, the optimized Bi-CD/BiOCl sample exhibits a superb rhodamine B (RhB) degradation rate of nearly 100%, which is 2.3 (1.7) times that of pristine BiOCl (CD/BiOCl). Additionally, the optimized sample exhibits an RhB degradation rate of up to 88.1% even under direct outdoor light and robust durability in water solution. Experimental results combined with DFT calculations reveal that the superior photocatalytic activity arises from the synergetic effects of broader light absorption due to the incorporation of CD, extra hot electron excitation by the localized surface plasmon resonance (LSPR) effect of metallic Bi, and enhanced electron transfer across the heterojunction interface as well as the existence of more oxygen vacancy traps in BiOCl. This work gives insights into the structure and photocatalytic properties of Bi-CD/BiOCl and provides a new strategy for the design and fabrication of robust high-performance photocatalysts under wide spectrum light irradiation.
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Affiliation(s)
- Han Wang
- College of Physics, Sichuan University, Chengdu 610064, China.
| | - Xi Zhang
- College of Physics, Sichuan University, Chengdu 610064, China.
| | - Hongyu Zhu
- College of Physics, Sichuan University, Chengdu 610064, China.
| | - Gang Xiang
- College of Physics, Sichuan University, Chengdu 610064, China.
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2
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Lv X, Liu D, Chen R, Liu H, Weng L, He L, Liu S. Bismuth-Doped Carbon Dots Decorated Escherichia coli for Enhanced Hydrogen Production. ACS APPLIED MATERIALS & INTERFACES 2024. [PMID: 38687628 DOI: 10.1021/acsami.4c02788] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/02/2024]
Abstract
Photosynthetic inorganic biohybrid systems (PBSs) combining an inorganic photosensitizer with intact living cells provide an innovative view for solar hydrogen production. However, typical whole-cell biohybrid systems often suffer from sluggish electron transfer kinetics during transmembrane diffusion, which severely limits the efficiency of solar hydrogen production. Here, a unique biohybrid system with a quantum yield of 8.42% was constructed by feeding bismuth-doped carbon dots (Bi@CDS) to Escherichia coli (E. coli). In this biohybrid system, Bi@CDS can enter the cells and transfer the electrons upon light irradiation, greatly reducing the energy loss and shortening the distance of electron transfer. More importantly, the photocatalytic hydrogen production of the E. coli-Bi@CDs biohybrid system reached up to 0.95 mmol within 3 h under light irradiation (420-780 nm, 2000 W m-2), which is 1.36 and 2.38 times higher than that in the E. coli-CDs biohybrid system and the E. coli system, respectively. In addition, the mechanism of enhanced hydrogen production was further explored. It was found that the accelerated decomposition of glucose, the accelerated production of pyruvate, the inhibition of lactic acid, and the increase of formic acid were the reasons for the increase of hydrogen production. This work provides a novel strategy for improving the hydrogen production in photosynthetic inorganic biohybrid systems.
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Affiliation(s)
- Xingxing Lv
- Key Laboratory of Green Chemical Engineering and Technology of College of Heilongjiang Province, School of Material Science and Chemical Engineering, Harbin University of Science and Technology, Harbin 150040, China
| | - Danqing Liu
- Key Laboratory of Green Chemical Engineering and Technology of College of Heilongjiang Province, School of Material Science and Chemical Engineering, Harbin University of Science and Technology, Harbin 150040, China
| | - Rui Chen
- Key Laboratory of Green Chemical Engineering and Technology of College of Heilongjiang Province, School of Material Science and Chemical Engineering, Harbin University of Science and Technology, Harbin 150040, China
| | - Haoxin Liu
- Augustana Faculty, University of Alberta, Camrose T4V 2R3, Canada
| | - Ling Weng
- Key Laboratory of Green Chemical Engineering and Technology of College of Heilongjiang Province, School of Material Science and Chemical Engineering, Harbin University of Science and Technology, Harbin 150040, China
| | - Liangcan He
- Key Laboratory of Micro-systems and Micro-structures Manufacturing of Ministry of Education, Harbin Institute of Technology, Harbin 150001, China
- School of Medicine and Health, Harbin Institute of Technology, Harbin 150001, China
- Zhengzhou Research InstituteHarbin Institute of Technology, Zhengzhou 450046, China
| | - Shaoqin Liu
- Key Laboratory of Micro-systems and Micro-structures Manufacturing of Ministry of Education, Harbin Institute of Technology, Harbin 150001, China
- School of Medicine and Health, Harbin Institute of Technology, Harbin 150001, China
- Zhengzhou Research InstituteHarbin Institute of Technology, Zhengzhou 450046, China
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Wang M, Wei G, Li R, Yu M, Liu G, Peng Y. Schottky Junctions with Bi@Bi 2MoO 6 Core-Shell Photocatalysts toward High-Efficiency Solar N 2-to-Ammonnia Conversion in Aqueous Phase. NANOMATERIALS (BASEL, SWITZERLAND) 2024; 14:780. [PMID: 38727374 PMCID: PMC11085196 DOI: 10.3390/nano14090780] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/09/2024] [Revised: 04/27/2024] [Accepted: 04/29/2024] [Indexed: 05/12/2024]
Abstract
The photocatalytic nitrogen reduction reaction (NRR) in aqueous solution is a green and sustainable strategy for ammonia production. Nonetheless, the efficiency of the process still has a wide gap compared to that of the Haber-Bosch one due to the difficulty of N2 activation and the quick recombination of photo-generated carriers. Herein, a core-shell Bi@Bi2MoO6 microsphere through constructing Schottky junctions has been explored as a robust photocatalyst toward N2 reduction to NH3. Metal Bi self-reduced onto Bi2MoO6 not only spurs the photo-generated electron and hole separation owing to the Schottky junction at the interface of Bi and Bi2MoO6 but also promotes N2 adsorption and activation at Bi active sites synchronously. As a result, the yield of the photocatalytic N2-to-ammonia conversion reaches up to 173.40 μmol g-1 on core-shell Bi@Bi2MoO6 photocatalysts, as much as two times of that of bare Bi2MoO6. This work provides a new design for the decarbonization of the nitrogen reduction reaction by the utilization of renewable energy sources.
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Affiliation(s)
- Meijiao Wang
- College of Chemistry and Chemical Engineering, Qingdao University, Qingdao 266071, China; (M.W.); (G.W.); (R.L.); (M.Y.)
| | - Guosong Wei
- College of Chemistry and Chemical Engineering, Qingdao University, Qingdao 266071, China; (M.W.); (G.W.); (R.L.); (M.Y.)
| | - Renjie Li
- College of Chemistry and Chemical Engineering, Qingdao University, Qingdao 266071, China; (M.W.); (G.W.); (R.L.); (M.Y.)
| | - Meng Yu
- College of Chemistry and Chemical Engineering, Qingdao University, Qingdao 266071, China; (M.W.); (G.W.); (R.L.); (M.Y.)
| | - Guangbo Liu
- Key Laboratory of Biofuels, Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao 266101, China
| | - Yanhua Peng
- College of Chemistry and Chemical Engineering, Qingdao University, Qingdao 266071, China; (M.W.); (G.W.); (R.L.); (M.Y.)
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Hou W, Guo H, Wu M, Wang L. Amide Covalent Bonding Engineering in Heterojunction for Efficient Solar-Driven CO 2 Reduction. ACS NANO 2023; 17:20560-20569. [PMID: 37791704 DOI: 10.1021/acsnano.3c07411] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/05/2023]
Abstract
Inefficient charge separation and slow interfacial reaction dynamics significantly hamper the efficiency of photocatalytic CO2 reduction. Herein, a facile EDC/NHS-assisted linking strategy was developed to enhance charge separation in heterojunction photocatalysts. Using this approach, we successfully synthesized amide-bonded carbon quantum dot-g-C3N4 (CQD-CN) heterojunction photocatalysts. The formation of amide covalent bonds between CN and CQDs in the CN-CQD facilitates efficient carrier migration, CO2 adsorption, and activation. Exploiting these advantages, the CN-CQD photocatalysts exhibit high selectivity with CO and CH4 evolution rates of 79.2 and 2.7 μmol g-1 h-1, respectively. These rates are about 1.7 and 3.6 times higher than those of CN@CQD and bulk CN, respectively. Importantly, the CN-CQD photocatalysts demonstrate exceptional stability, even after 12 h of continuous testing. The presence of the COOH* signal is identified as a crucial intermediate species in the conversion of CO2 to CO. This study presents a covalent bonding engineering strategy for developing high-performance heterojunction photocatalysts for efficient solar-driven reduction of CO2.
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Affiliation(s)
- Weidong Hou
- Institute of Nanochemistry and Nanobiology, School of Environmental and Chemical Engineering, Shanghai University, Shanghai 200444, P. R. China
| | - Huazhang Guo
- Institute of Nanochemistry and Nanobiology, School of Environmental and Chemical Engineering, Shanghai University, Shanghai 200444, P. R. China
| | - Minghong Wu
- Key Laboratory of Organic Compound Pollution Control Engineering (MOE), School of Environmental and Chemical Engineering, Shanghai University, Shanghai 200444, P. R. China
| | - Liang Wang
- Institute of Nanochemistry and Nanobiology, School of Environmental and Chemical Engineering, Shanghai University, Shanghai 200444, P. R. China
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Wu L, Li M, Zhou B, Xu S, Yuan L, Wei J, Wang J, Zou S, Xie W, Qiu Y, Rao M, Chen G, Ding L, Yan K. Reversible Stacking of 2D ZnIn 2 S 4 Atomic Layers for Enhanced Photocatalytic Hydrogen Evolution. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2023; 19:e2303821. [PMID: 37328439 DOI: 10.1002/smll.202303821] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/07/2023] [Indexed: 06/18/2023]
Abstract
It is technically challenging to reversibly tune the layer number of 2D materials in the solution. Herein, a facile concentration modulation strategy is demonstrated to reversibly tailor the aggregation state of 2D ZnIn2 S4 (ZIS) atomic layers, and they are implemented for effective photocatalytic hydrogen (H2 ) evolution. By adjusting the colloidal concentration of ZIS (ZIS-X, X = 0.09, 0.25, or 3.0 mg mL-1 ), ZIS atomic layers exhibit the significant aggregation of (006) facet stacking in the solution, leading to the bandgap shift from 3.21 to 2.66 eV. The colloidal stacked layers are further assembled into hollow microsphere after freeze-drying the solution into solid powders, which can be redispersed into colloidal solution with reversibility. The photocatalytic hydrogen evolution of ZIS-X colloids is evaluated, and the slightly aggregated ZIS-0.25 displays the enhanced photocatalytic H2 evolution rates (1.11 µmol m-2 h-1 ). The charge-transfer/recombination dynamics are characterized by time-resolved photoluminescence (TRPL) spectroscopy, and ZIS-0.25 displays the longest lifetime (5.55 µs), consistent with the best photocatalytic performance. This work provides a facile, consecutive, and reversible strategy for regulating the photo-electrochemical properties of 2D ZIS, which is beneficial for efficient solar energy conversion.
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Affiliation(s)
- Liqin Wu
- School of Environment and Energy, State Key Lab of Luminescent Materials and Devices, Guangdong Provincial Key Laboratory of Solid Wastes Pollution Control and Recycling, South China University of Technology, Guangzhou, 510000, China
| | - Mingjie Li
- School of Environment and Energy, State Key Lab of Luminescent Materials and Devices, Guangdong Provincial Key Laboratory of Solid Wastes Pollution Control and Recycling, South China University of Technology, Guangzhou, 510000, China
| | - Biao Zhou
- School of Environment and Energy, State Key Lab of Luminescent Materials and Devices, Guangdong Provincial Key Laboratory of Solid Wastes Pollution Control and Recycling, South China University of Technology, Guangzhou, 510000, China
| | - Shuang Xu
- School of Environment and Energy, State Key Lab of Luminescent Materials and Devices, Guangdong Provincial Key Laboratory of Solid Wastes Pollution Control and Recycling, South China University of Technology, Guangzhou, 510000, China
| | - Ligang Yuan
- School of Environment and Energy, State Key Lab of Luminescent Materials and Devices, Guangdong Provincial Key Laboratory of Solid Wastes Pollution Control and Recycling, South China University of Technology, Guangzhou, 510000, China
| | - Jianwu Wei
- School of Environment and Energy, State Key Lab of Luminescent Materials and Devices, Guangdong Provincial Key Laboratory of Solid Wastes Pollution Control and Recycling, South China University of Technology, Guangzhou, 510000, China
| | - Jiarong Wang
- School of Environment and Energy, State Key Lab of Luminescent Materials and Devices, Guangdong Provincial Key Laboratory of Solid Wastes Pollution Control and Recycling, South China University of Technology, Guangzhou, 510000, China
| | - Shibing Zou
- School of Environment and Energy, State Key Lab of Luminescent Materials and Devices, Guangdong Provincial Key Laboratory of Solid Wastes Pollution Control and Recycling, South China University of Technology, Guangzhou, 510000, China
| | - Weiguang Xie
- Siyuan Laboratory, Guangdong Provincial Engineering Technology Research Center of Vacuum Coating Technologies and New Energy Materials, Department of Physics, Jinan University, Guangzhou, Guangdong, 510632, China
| | - Yongcai Qiu
- School of Environment and Energy, State Key Lab of Luminescent Materials and Devices, Guangdong Provincial Key Laboratory of Solid Wastes Pollution Control and Recycling, South China University of Technology, Guangzhou, 510000, China
| | - Mumin Rao
- Guangdong Energy Group Science and Technology Research Institute of Co., Ltd., Guangzhou, 510630, China
| | - Guangxu Chen
- School of Environment and Energy, State Key Lab of Luminescent Materials and Devices, Guangdong Provincial Key Laboratory of Solid Wastes Pollution Control and Recycling, South China University of Technology, Guangzhou, 510000, China
| | - Liming Ding
- Center of Excellence in Nanoscience (CAS), Key Laboratory of Nanosystem and Hierarchical Fabrication (CAS), National Center for Nanoscience and Technology, Beijing, 100190, China
| | - Keyou Yan
- School of Environment and Energy, State Key Lab of Luminescent Materials and Devices, Guangdong Provincial Key Laboratory of Solid Wastes Pollution Control and Recycling, South China University of Technology, Guangzhou, 510000, China
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Xu A, Chen X, Wei D, Chu B, Yu M, Yin X, Xu J. Regulating the Electronic Structure of Bismuth Nanosheets by Titanium Doping to Boost CO 2 Electroreduction and Zn-CO 2 Batteries. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2023; 19:e2302253. [PMID: 37211692 DOI: 10.1002/smll.202302253] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/19/2023] [Revised: 05/12/2023] [Indexed: 05/23/2023]
Abstract
The electrochemical carbon dioxide reduction reaction (E-CO2 RR) to formate is a promising strategy for mitigating greenhouse gas emissions and addressing the global energy crisis. Developing low-cost and environmentally friendly electrocatalysts with high selectivity and industrial current densities for formate production is an ideal but challenging goal in the field of electrocatalysis. Herein, novel titanium-doped bismuth nanosheets (TiBi NSs) with enhanced E-CO2 RR performance are synthesized through one-step electrochemical reduction of bismuth titanate (Bi4 Ti3 O12 ). We comprehensively evaluated TiBi NSs using in situ Raman spectra, finite element method, and density functional theory. The results indicate that the ultrathin nanosheet structure of TiBi NSs can accelerate mass transfer, while the electron-rich properties can accelerate the production of *CO2 - and enhance the adsorption strength of *OCHO intermediate. The TiBi NSs deliver a high formate Faradaic efficiency (FEformate ) of 96.3% and a formate production rate of 4032 µmol h-1 cm-2 at -1.01 V versus RHE. An ultra-high current density of -338.3 mA cm-2 is achieved at -1.25 versus RHE, and simultaneously FEformate still reaches more than 90%. Furthermore, the rechargeable Zn-CO2 battery using TiBi NSs as a cathode catalyst achieves a maximum power density of 1.05 mW cm-2 and excellent charging/discharging stability of 27 h.
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Affiliation(s)
- Aihao Xu
- School of Chemistry and Chemical Engineering, Guangxi Key Laboratory of Petrochemical Resource Processing and Process Intensification Technology, Guangxi University, Nanning, 530004, China
| | - Xiangyu Chen
- School of Chemistry and Chemical Engineering, Guangxi Key Laboratory of Petrochemical Resource Processing and Process Intensification Technology, Guangxi University, Nanning, 530004, China
| | - Dong Wei
- School of Chemistry and Chemical Engineering, Guangxi Key Laboratory of Petrochemical Resource Processing and Process Intensification Technology, Guangxi University, Nanning, 530004, China
| | - Bingxian Chu
- School of Chemistry and Chemical Engineering, Guangxi Key Laboratory of Petrochemical Resource Processing and Process Intensification Technology, Guangxi University, Nanning, 530004, China
| | - Meihua Yu
- School of Chemistry and Chemical Engineering, Guangxi Key Laboratory of Petrochemical Resource Processing and Process Intensification Technology, Guangxi University, Nanning, 530004, China
| | - Xucai Yin
- School of Chemistry and Chemical Engineering, Guangxi Key Laboratory of Petrochemical Resource Processing and Process Intensification Technology, Guangxi University, Nanning, 530004, China
| | - Jing Xu
- School of Chemistry and Chemical Engineering, Guangxi Key Laboratory of Petrochemical Resource Processing and Process Intensification Technology, Guangxi University, Nanning, 530004, China
- School of Chemical Engineering, State Key Laboratory of Chemical Engineering, East China University of Science and Technology, Shanghai, 200237, China
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Gong D, Guo J, Wang F, Zhang J, Song S, Feng B, Zhang X, Zhang W. Green construction of metal- and additive-free citrus peel-derived carbon dot/g-C 3N 4 photocatalysts for the high-performance photocatalytic decomposition of sunset yellow. Food Chem 2023; 425:136470. [PMID: 37269639 DOI: 10.1016/j.foodchem.2023.136470] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2023] [Revised: 05/23/2023] [Accepted: 05/25/2023] [Indexed: 06/05/2023]
Abstract
In this study, novel, metal-free, CP-derived CDs/g-C3N4 nanocomposites (CDCNs) were created by introducing citrus peel-derived carbon dots (CP-derived CDs) into graphite carbon nitride (g-C3N4) by a green hydrothermal method. The CDCNs were revealed to have superior photoelectrochemical properties relative to pristine g-C3N4 for the photocatalytic degradation of the food dye sunset yellow (SY) under visible light. For SY decomposition, the recommended catalyst contributed almost 96.3% to the photodegradation rate after 60 min of irradiation, showing satisfactory reusability, structural stability and biocompatibility. Moreover, a mechanism for enhanced photocatalytic SY degradation was proposed according to band analysis, free radical trapping and electron paramagnetic resonance (EPR) results. A possible pathway for SY photodegradation was also predicted from UV-visible (UV-Vis) spectroscopy and high-performance liquid chromatography (HPLC) results. The constructed nonmetallic nanophotocatalysts afford a novel route for the elimination of harmful dyes and for the resource conversion of citrus peels.
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Affiliation(s)
- Dezhuang Gong
- College of Food Science, Northeast Agricultural University, Harbin, Heilongjiang 150030, PR China
| | - Jialiang Guo
- College of Life Sciences, Changchun Normal University, Changchun, Jilin 130032, PR China
| | - Fan Wang
- College of Food Science, Northeast Agricultural University, Harbin, Heilongjiang 150030, PR China
| | - Jing Zhang
- College of Food Science, Northeast Agricultural University, Harbin, Heilongjiang 150030, PR China
| | - Shuang Song
- College of Food Science, Northeast Agricultural University, Harbin, Heilongjiang 150030, PR China
| | - Bingxin Feng
- College of Food Science, Northeast Agricultural University, Harbin, Heilongjiang 150030, PR China
| | - Xiuling Zhang
- College of Food Science, Northeast Agricultural University, Harbin, Heilongjiang 150030, PR China.
| | - Wentao Zhang
- College of Food Science, Northeast Agricultural University, Harbin, Heilongjiang 150030, PR China.
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Jiao J, Zhang T, Xu J, Guo K, Li J, Han Q. Hydroxyl radical-dominated selective oxidation of ethylbenzene over a photoactive polyoxometalate-based metal-organic framework. Chem Commun (Camb) 2023; 59:3114-3117. [PMID: 36807431 DOI: 10.1039/d2cc06403k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/16/2023]
Abstract
Realizing photo-promoted saturated C-H functionalization is a significant challenge. [CuI3(H2O)6(TPT)2][H2BW12O40]·28H2O was assembled by combining electron reservoir [BW12O40]5- with photosensitizer TPT. The continuous coordination bonds and π-π stacking interactions facilitate hole-electron separation and electron transfer, and allow it to exhibit high photocatalytic activity toward ethylbenzene oxidation with O2/H2O as oxidants.
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Affiliation(s)
- Jiachen Jiao
- Henan Key Laboratory of Polyoxometalate Chemistry, College of Chemistry and Chemical Engineering, Henan University, Kaifeng 475004, P. R. China.
| | - Ting Zhang
- Henan Key Laboratory of Polyoxometalate Chemistry, College of Chemistry and Chemical Engineering, Henan University, Kaifeng 475004, P. R. China.
| | - Jiangbo Xu
- Henan Key Laboratory of Polyoxometalate Chemistry, College of Chemistry and Chemical Engineering, Henan University, Kaifeng 475004, P. R. China.
| | - Kaixin Guo
- Henan Key Laboratory of Polyoxometalate Chemistry, College of Chemistry and Chemical Engineering, Henan University, Kaifeng 475004, P. R. China.
| | - Jie Li
- Henan Key Laboratory of Polyoxometalate Chemistry, College of Chemistry and Chemical Engineering, Henan University, Kaifeng 475004, P. R. China. .,School of Chemistry & Chemical Engineering, Zhoukou Normal University, Zhoukou, Henan 466001, P. R. China
| | - Qiuxia Han
- Henan Key Laboratory of Polyoxometalate Chemistry, College of Chemistry and Chemical Engineering, Henan University, Kaifeng 475004, P. R. China.
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