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Jing Z, Liu S, Zhang X, Hong Y, Ma P, Wang J, Niu J. [Ru(bpy) 3] 2+ Derivatives-Incorporated POM@MOFs with Good Photocatalytic Activity for Visible-Light-Driven Oxidative Coupling of Amines to Imines. Inorg Chem 2025; 64:7832-7840. [PMID: 40196981 DOI: 10.1021/acs.inorgchem.5c01138] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/09/2025]
Abstract
Two novel POM@MOFs, {H3Zn2.5(H2O)10[Ru(dcbpy)3][PMo11VIMoVO40]}·2H2O (RuZn-PMo) and {H3Ni2.5(H2O)12[Ru(dcbpy)3][PMo11VIMoVO40]}·5H2O (RuNi-PMo), have been synthesized through a traditional hydrothermal method. They are composed of [Ru(bpy)3]2+-derived hexa-carboxylate and Keggin-type anion [PMo11VIMoVO40]4-. In addition, their structures were well characterized by various spectroscopic methods. Under the irradiation of visible light (λ > 400 nm), RuZn-PMo and RuNi-PMo as heterogeneous photocatalysts showed efficient photocatalytic performance in the coupling reaction of amines, with TONs of 451 and 454, respectively. Moreover, RuZn-PMo exhibited excellent reusability and stability after three continuous reaction cycles. Besides, EPR measurements were performed to elucidate the reaction mechanism.
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Affiliation(s)
- Zhen Jing
- Henan Key Laboratory of Polyoxometalate Chemistry, College of Chemistry and Molecular Sciences, Henan University, Kaifeng, Henan 475004, P. R. China
| | - Sen Liu
- Henan Key Laboratory of Polyoxometalate Chemistry, College of Chemistry and Molecular Sciences, Henan University, Kaifeng, Henan 475004, P. R. China
| | - Xiaodong Zhang
- Henan Key Laboratory of Polyoxometalate Chemistry, College of Chemistry and Molecular Sciences, Henan University, Kaifeng, Henan 475004, P. R. China
| | - Yumei Hong
- Henan Key Laboratory of Polyoxometalate Chemistry, College of Chemistry and Molecular Sciences, Henan University, Kaifeng, Henan 475004, P. R. China
| | - Pengtao Ma
- Henan Key Laboratory of Polyoxometalate Chemistry, College of Chemistry and Molecular Sciences, Henan University, Kaifeng, Henan 475004, P. R. China
| | - Jingping Wang
- Henan Key Laboratory of Polyoxometalate Chemistry, College of Chemistry and Molecular Sciences, Henan University, Kaifeng, Henan 475004, P. R. China
| | - Jingyang Niu
- Henan Key Laboratory of Polyoxometalate Chemistry, College of Chemistry and Molecular Sciences, Henan University, Kaifeng, Henan 475004, P. R. China
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2
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Liu Q, Huang Y, Ye YX. Construction of Conjugated Organic Polymers for Efficient Photocatalytic Hydrogen Peroxide Generation with Adequate Utilization of Water Oxidation. MATERIALS (BASEL, SWITZERLAND) 2024; 17:2709. [PMID: 38893973 PMCID: PMC11173575 DOI: 10.3390/ma17112709] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/22/2024] [Revised: 05/15/2024] [Accepted: 05/21/2024] [Indexed: 06/21/2024]
Abstract
The visible-light-driven photocatalytic production of hydrogen peroxide (H2O2) is currently an emerging approach for transforming solar energy into chemical energy. In general, the photocatalytic process for producing H2O2 includes two pathways: the water oxidation reaction (WOR) and the oxygen reduction reaction (ORR). However, the utilization efficiency of ORR surpasses that of WOR, leading to a discrepancy with the low oxygen levels in natural water and thereby impeding their practical application. Herein, we report a novel donor-bridge-acceptor (D-B-A) organic polymer conjugated by the Sonogashira-Hagihara coupling reaction with tetraphenylethene (TPE) units as the electron donors, acetylene (A) as the connectors and pyrene (P) moieties as the electron acceptors. Notably, the resulting TPE-A-P exhibits a remarkable solar-to-chemical conversion of 1.65% and a high BET-specific surface area (1132 m2·g-1). Furthermore, even under anaerobic conditions, it demonstrates an impressive H2O2 photosynthetic efficiency of 1770 μmol g-1 h-1, exceeding the vast majority of previously reported photosynthetic systems of H2O2. The outstanding performance is attributed to the effective separation of electrons and holes, along with the presence of sufficient reaction sites facilitated by the incorporation of alkynyl electronic bridges. This protocol presents a successful method for generating H2O2 via a water oxidation reaction, signifying a significant advancement towards practical applications in the natural environment.
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Affiliation(s)
- Qinzhe Liu
- Key Laboratory of Bioinorganic and Synthetic Chemistry of Ministry of Education, LIFM—Lehn Institute of Functional Materials, School of Chemistry, IGCME—Institute of Green Chemistry and Molecular Engineering, Sun Yat-sen University, Guangzhou 510275, China (Y.H.)
| | - Yuyan Huang
- Key Laboratory of Bioinorganic and Synthetic Chemistry of Ministry of Education, LIFM—Lehn Institute of Functional Materials, School of Chemistry, IGCME—Institute of Green Chemistry and Molecular Engineering, Sun Yat-sen University, Guangzhou 510275, China (Y.H.)
| | - Yu-xin Ye
- School of Chemical Engineering and Technology, IGCME, Sun Yat-sen University, Zhuhai 519082, China
- Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Zhuhai 519082, China
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3
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Khalaji-Verjani M, Masteri-Farahani M. Designing a hybrid nanomaterial based on Cr-containing polyoxometalate and graphene oxide as an electrocatalyst for the hydrogen evolution reaction. Dalton Trans 2024; 53:6920-6931. [PMID: 38563196 DOI: 10.1039/d4dt00320a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/04/2024]
Abstract
A new polyoxometalate (POM)-based hybrid nanomaterial (denoted as PMo11-Cr-mGO) was designed via covalent interaction between the Cr(acac)3 complex and [PMo11O39]7- followed by immobilization on the surface of modified graphene oxide (mGO). The prepared nanomaterial was characterized using a series of physicochemical techniques. X-ray diffraction (XRD), Raman analysis, transmission electron microscopy (TEM), and FE-SEM-EDS revealed the preservation of layered GO during the formation of the desired hybrid nanomaterial. Fourier transform infrared (FT-IR), X-ray photoelectron spectroscopy (XPS), and elemental analysis confirmed the immobilization of POM (PMo11-Cr) on the surface of mGO and the formation of PMo11-Cr-mGO. In order to evaluate the performance of PMo11-Cr-mGO in the hydrogen evolution reaction (HER), electrochemical measurements were also performed. The resulting PMo11-Cr-mGO exhibited excellent HER activities with a low overpotential of 153 mV at 10 mA cm-2 and good durability in acidic media, thus emerging as one of the most efficient POM-based electrocatalysts.
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Ma T, Yan R, Wu X, Wang M, Yin B, Li S, Cheng C, Thomas A. Polyoxometalate-Structured Materials: Molecular Fundamentals and Electrocatalytic Roles in Energy Conversion. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2024; 36:e2310283. [PMID: 38193756 DOI: 10.1002/adma.202310283] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/04/2023] [Revised: 01/02/2024] [Indexed: 01/10/2024]
Abstract
Polyoxometalates (POMs), a kind of molecular metal oxide cluster with unique physical-chemical properties, have made essential contributions to creating efficient and robust electrocatalysts in renewable energy systems. Due to the fundamental advantages of POMs, such as the diversity of molecular structures and large numbers of redox active sites, numerous efforts have been devoted to extending their application areas. Up to now, various strategies of assembling POM molecules into superstructures, supporting POMs on heterogeneous substrates, and POMs-derived metal compounds have been developed for synthesizing electrocatalysts. From a multidisciplinary perspective, the latest advances in creating POM-structured materials with a unique focus on their molecular fundamentals, electrocatalytic roles, and the recent breakthroughs of POMs and POM-derived electrocatalysts, are systematically summarized. Notably, this paper focuses on exposing the current states, essences, and mechanisms of how POM-structured materials influence their electrocatalytic activities and discloses the critical requirements for future developments. The future challenges, objectives, comparisons, and perspectives for creating POM-structured materials are also systematically discussed. It is anticipated that this review will offer a substantial impact on stimulating interdisciplinary efforts for the prosperities and widespread utilizations of POM-structured materials in electrocatalysis.
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Affiliation(s)
- Tian Ma
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu, 610065, China
| | - Rui Yan
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu, 610065, China
| | - Xizheng Wu
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu, 610065, China
| | - Mao Wang
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu, 610065, China
- Department of Chemical and Biomolecular Engineering, National University of Singapore, Singapore, 117576, Singapore
| | - Bo Yin
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu, 610065, China
| | - Shuang Li
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu, 610065, China
| | - Chong Cheng
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu, 610065, China
| | - Arne Thomas
- Department of Chemistry, Technische Universität Berlin, Hardenbergstraße 40, 10623, Berlin, Germany
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5
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Singh M, Yadav A, Singh R, Pradeep CP. Aryl selenonium vs. aryl sulfonium counterions in polyoxometalate chemistry: the impact of Se + cationic centers on the photocatalytic reduction of dichromate. Dalton Trans 2024; 53:724-737. [PMID: 38086687 DOI: 10.1039/d3dt03465h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2024]
Abstract
A selenonium organic counter ion has been used in polyoxometalate chemistry to develop a new aryl selenonium polyoxometalate (POM) hybrid, and its photocatalytic properties have been explored in comparison with an aryl sulfonium POM-hybrid counterpart for the first time. The chalcogenonium counterions, namely, methyldiphenylsulfonium trifluoromethane sulfonate (MDPST) and methyldiphenylselenonium trifluoromethane sulfonate (MDPSeT), and their octamolybdate ([Mo8O26]4-) hybrids, 1 and 2, with the general formula (C13H13X)4[Mo8O26] (where X = S for 1 and Se for 2) were synthesized and characterized. Hybrids 1 and 2 vary in their chalcogenonium cationic center (S+vs. Se+), which enabled a direct comparison of their photocatalytic properties as a function of the cationic center. The photocatalytic activities of hybrids 1 and 2 were tested using the reduction of dichromate (Cr2O72-) as a model reaction under UV irradiation. A 99% photocatalytic reduction of Cr2O72- with a rate constant of 0.0305 min-1 was achieved with hybrid 2, while only a 67% reduction with a rate constant of 0.0062 min-1 was observed with hybrid 1 in 180 minutes. The better catalytic performance of hybrid 2 may be correlated to the larger atomic radii of Se than S, which helps in better stabilizing the photogenerated electron-hole (e--h+) pair on the POM cluster by polarizing its lone pair more efficiently compared to S. The catalytic recyclability was tested for up to 4 cycles using hybrid 2, and up to 98% reduction was obtained even after the 4th cycle. Recyclability tests and control experiments also indicated the generation of some elemental Se through possible cleavage of some C-Se bonds of MDPSe under prolonged UV exposure during catalysis, and the Se thus generated was found to contribute to the catalytic reduction of dichromate. This study, therefore, opens new avenues for aryl selenonium moieties and their POM hybrids for potential catalytic applications.
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Affiliation(s)
- Mahender Singh
- School of Chemical Sciences, Indian Institute of Technology Mandi, Mandi - 175075, Himachal Pradesh, India.
| | - Aakash Yadav
- School of Chemical Sciences, Indian Institute of Technology Mandi, Mandi - 175075, Himachal Pradesh, India.
| | - Ranjit Singh
- School of Chemical Sciences, Indian Institute of Technology Mandi, Mandi - 175075, Himachal Pradesh, India.
| | - Chullikkattil P Pradeep
- School of Chemical Sciences, Indian Institute of Technology Mandi, Mandi - 175075, Himachal Pradesh, India.
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6
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Liu W, Xu R, Pan W, Li C, Huang N, Huang Y, Ye L. Solar-to-H 2 O 2 Energy Conversion by the Photothermal Effect of a Polymeric Photocatalyst via a Two-Channel Pathway. CHEMSUSCHEM 2023:e202300015. [PMID: 36905229 DOI: 10.1002/cssc.202300015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/05/2023] [Revised: 03/02/2023] [Indexed: 06/18/2023]
Abstract
With a view to using solar energy, the exploitation of near-infrared (NIR) light, which constitutes about 50 % of solar energy, in photocatalytic H2 O2 synthesis remains challenging. In this study, resorcinol-formaldehyde (RF), which has a relatively low bandgap and high conductivity, is introduced for photothermal catalytic generation of H2 O2 under ambient conditions. Owing to the promoted surface charge transfer rate under high temperature, the photosynthetic yield reaches roughly 2000 μm within 40 min under 400 mW cm-2 irradiation with a solar-to-chemical conversion (SCC) efficiency of up to 0.19 % at 338 K under ambient conditions, exceeding the rate of photocatalysis with a cooling system by a factor of about 2.5. Notably, the H2 O2 produced by RF during photothermal process was formed via a two-channel pathway, leading to the overall promotion of H2 O2 formation. The resultant H2 O2 can be applied in situ for pollutant removal. This work offers a sustainable and economical route for the efficient formation of H2 O2 .
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Affiliation(s)
- Wei Liu
- College of Materials and Chemical Engineering Key Laboratory of Inorganic Nonmetallic Crystalline and Energy Conversion Materials, China Three Gorges University, Yichang, 443002, P. R. China
| | - Run Xu
- College of Materials and Chemical Engineering Key Laboratory of Inorganic Nonmetallic Crystalline and Energy Conversion Materials, China Three Gorges University, Yichang, 443002, P. R. China
| | - Weifeng Pan
- College of Materials and Chemical Engineering Key Laboratory of Inorganic Nonmetallic Crystalline and Energy Conversion Materials, China Three Gorges University, Yichang, 443002, P. R. China
| | - Chao Li
- College of Materials and Chemical Engineering Key Laboratory of Inorganic Nonmetallic Crystalline and Energy Conversion Materials, China Three Gorges University, Yichang, 443002, P. R. China
| | - Niu Huang
- College of Materials and Chemical Engineering Key Laboratory of Inorganic Nonmetallic Crystalline and Energy Conversion Materials, China Three Gorges University, Yichang, 443002, P. R. China
| | - Yingping Huang
- Engineering Research Center of Eco-environment in Three Gorges Reservoir Region Ministry of Education, China Three Gorges University, Yichang, 443002, P. R. China
| | - Liqun Ye
- College of Materials and Chemical Engineering Key Laboratory of Inorganic Nonmetallic Crystalline and Energy Conversion Materials, China Three Gorges University, Yichang, 443002, P. R. China
- Engineering Research Center of Eco-environment in Three Gorges Reservoir Region Ministry of Education, China Three Gorges University, Yichang, 443002, P. R. China
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7
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Fabrication and catalytic properties of polyoxometalates immobilized on mono- and bimetallic-zeolitic imidazolate frameworks for degradation of AV7 dye. JOURNAL OF THE IRANIAN CHEMICAL SOCIETY 2023. [DOI: 10.1007/s13738-022-02740-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
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8
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Two silver–containing polyoxometalate–based inorganic–organic hybrids as heterogeneous bifunctional catalysts for construction of C–C bonds and decontamination of sulfur mustard simulant. J SOLID STATE CHEM 2022. [DOI: 10.1016/j.jssc.2022.123547] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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9
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Hui X, Wang L, Yao Z, Hao L, Sun Z. Recent progress of photocatalysts based on tungsten and related metals for nitrogen reduction to ammonia. Front Chem 2022; 10:978078. [PMID: 36072702 PMCID: PMC9441816 DOI: 10.3389/fchem.2022.978078] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2022] [Accepted: 07/15/2022] [Indexed: 11/22/2022] Open
Abstract
Photocatalytic nitrogen reduction reaction (NRR) to ammonia holds a great promise for substituting the traditional energy-intensive Haber–Bosch process, which entails sunlight as an inexhaustible resource and water as a hydrogen source under mild conditions. Remarkable progress has been achieved regarding the activation and solar conversion of N2 to NH3 with the rapid development of emerging photocatalysts, but it still suffers from low efficiency. A comprehensive review on photocatalysts covering tungsten and related metals as well as their broad ranges of alloys and compounds is lacking. This article aims to summarize recent advances in this regard, focusing on the strategies to enhance the photocatalytic performance of tungsten and related metal semiconductors for the NRR. The fundamentals of solar-to-NH3 photocatalysis, reaction pathways, and NH3 quantification methods are presented, and the concomitant challenges are also revealed. Finally, we cast insights into the future development of sustainable NH3 production, and highlight some potential directions for further research in this vibrant field.
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Affiliation(s)
| | | | | | | | - Zhenyu Sun
- *Correspondence: Leiduan Hao, ; Zhenyu Sun,
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10
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Fu Y, Liao Y, Li P, Li H, Jiang S, Huang H, Sun W, Li T, Yu H, Li K, Li H, Jia B, Ma T. Layer structured materials for ambient nitrogen fixation. Coord Chem Rev 2022. [DOI: 10.1016/j.ccr.2022.214468] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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11
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Yan H, Shen M, Shen Y, Wang XD, Lin W, Pan J, He J, Ye YX, Yang(杨欣) X, Zhu F, Xu J, He J, Ouyang G. Spontaneous exciton dissociation in organic photocatalyst under ambient conditions for highly efficient synthesis of hydrogen peroxide. Proc Natl Acad Sci U S A 2022; 119:e2202913119. [PMID: 35605116 PMCID: PMC9295752 DOI: 10.1073/pnas.2202913119] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2022] [Accepted: 04/08/2022] [Indexed: 11/18/2022] Open
Abstract
SignificanceHydrogen peroxide is a highly competitive ready-to-use product for solar energy transformation. Nevertheless, the contemporary photosynthetic systems are not efficient enough, due to severe charge recombination caused by high activation energy and binding energy of the exciton. Herein, we achieve spontaneous exciton dissociation at room temperature. Moreover, the photosynthesis of H2O2 reaches between 9,366 and 12,324 µmol·g-1 from 9 AM to 4 PM in ambient conditions, that is, sunlight irradiation, real water including fresh water and seawater, room temperature, and open air. The ultrahigh photocatalytic efficiency in ambient conditions allows the solar-to-chemical conversion in a real cost-effective and sustainable way, which represents an important step toward real applications.
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Affiliation(s)
- Huijie Yan
- Ministry of Education Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry, Sun Yat-sen University, Guangzhou 510006, China
| | - Minhui Shen
- Ministry of Education Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry, Sun Yat-sen University, Guangzhou 510006, China
| | - Yong Shen
- Ministry of Education Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry, Sun Yat-sen University, Guangzhou 510006, China
| | - Xu-Dong Wang
- Ministry of Education Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry, Sun Yat-sen University, Guangzhou 510006, China
| | - Wei Lin
- Advanced Institute of Natural Sciences, Beijing Normal University at Zhuhai, Zhuhai 519087, China
| | - Jinhui Pan
- Ministry of Education Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry, Sun Yat-sen University, Guangzhou 510006, China
| | - Jian He
- State Key Laboratory of Biocontrol/Southern Laboratory of Ocean Science and Engineering (Guangdong, Zhuhai), School of Marine Sciences, Sun Yat-sen University, Guangzhou 510275, China
| | - Yu-Xin Ye
- Ministry of Education Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry, Sun Yat-sen University, Guangzhou 510006, China
| | - Xin Yang(杨欣)
- School of Environmental Science and Engineering, Guangdong Provincial Key Laboratory of Environmental Pollution Control and Remediation Technology, Sun Yat-sen University, Guangzhou 510275, China
| | - Fang Zhu
- Ministry of Education Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry, Sun Yat-sen University, Guangzhou 510006, China
| | - Jianqiao Xu
- Ministry of Education Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry, Sun Yat-sen University, Guangzhou 510006, China
| | - Jianguo He
- State Key Laboratory of Biocontrol/Southern Laboratory of Ocean Science and Engineering (Guangdong, Zhuhai), School of Marine Sciences, Sun Yat-sen University, Guangzhou 510275, China
| | - Gangfeng Ouyang
- Ministry of Education Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry, Sun Yat-sen University, Guangzhou 510006, China
- Guangdong Provincial Key Laboratory of Chemical Measurement and Emergency Test Technology, Institute of Analysis, Guangdong Academy of Sciences (China National Analytical Center, Guangzhou), Guangzhou 510070, China
- Chemistry College, Center of Advanced Analysis and Gene Sequencing, Zhengzhou University, Zhengzhou 450001, China
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Su S, Li X, Zhang X, Zhu J, Liu G, Tan M, Wang Y, Luo M. Keggin-type SiW 12 encapsulated in MIL-101(Cr) as efficient heterogeneous photocatalysts for nitrogen fixation reaction. J Colloid Interface Sci 2022; 621:406-415. [PMID: 35472667 DOI: 10.1016/j.jcis.2022.04.006] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2022] [Revised: 03/31/2022] [Accepted: 04/01/2022] [Indexed: 10/18/2022]
Abstract
The incorporation of polyoxometalates (POMs) in metal-organic frameworks (MOFs) with host-guest structure have proven to be effective strategy to rational design of heterogeneous catalysis. In this study, the Keggin-type POM@MIL-101(Cr) composite catalysts (PMo12, PW12 and SiW12) are synthesized for nitrogen fixation reaction without sacrificial agents at room temperature in the first time. The SiW12 molecules are encapsulated in smaller cavities of MIL-101(Cr) by solvothermal method and in larger cavities by impregnation method, respectively. Solvothermal synthesized catalyst has a performance of 75.56 μmol·h-1·g-1cat and TOF value of 1.95 h-1, which are about 10 and 88 times than that of Na4SiW12O40. The excellent performance is ascribed to the synergistic effect of SiW12 and MIL-101(Cr). The MIL-101(Cr) adsorbs a large amount of N2 and generates sufficiently photogenerated electrons under sunlight irradiation, and electrons quickly transfer to the SiW12 through hydrogen bonds. Moreover, the agglomeration effect of the homogeneous catalyst SiW12 is weakened due to encapsulation with more exposed active sites. This work provides a feasible route to design and synthesize nanocomposite materials with exceptional performance for photocatalytic nitrogen fixation.
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Affiliation(s)
- Senda Su
- State Key Laboratory of High-efficiency Utilization of Coal and Green Chemical Engineering, School of Chemistry and Chemical Engineering, Ningxia University, Yinchuan, Ningxia 750021, PR China
| | - Xiaoman Li
- State Key Laboratory of High-efficiency Utilization of Coal and Green Chemical Engineering, School of Chemistry and Chemical Engineering, Ningxia University, Yinchuan, Ningxia 750021, PR China.
| | - Xu Zhang
- State Key Laboratory of High-efficiency Utilization of Coal and Green Chemical Engineering, School of Chemistry and Chemical Engineering, Ningxia University, Yinchuan, Ningxia 750021, PR China
| | - Jingting Zhu
- International Collaborative Laboratory of 2D Materials for Optoelectronics Science and Technology of Ministry of Education Institute of Microscale Optoelectronics, Shenzhen University, Shenzhen 518060, PR China
| | - Guodong Liu
- State Key Laboratory of High-efficiency Utilization of Coal and Green Chemical Engineering, School of Chemistry and Chemical Engineering, Ningxia University, Yinchuan, Ningxia 750021, PR China
| | - Mengyao Tan
- State Key Laboratory of High-efficiency Utilization of Coal and Green Chemical Engineering, School of Chemistry and Chemical Engineering, Ningxia University, Yinchuan, Ningxia 750021, PR China
| | - Yingying Wang
- State Key Laboratory of High-efficiency Utilization of Coal and Green Chemical Engineering, School of Chemistry and Chemical Engineering, Ningxia University, Yinchuan, Ningxia 750021, PR China
| | - Min Luo
- State Key Laboratory of High-efficiency Utilization of Coal and Green Chemical Engineering, School of Chemistry and Chemical Engineering, Ningxia University, Yinchuan, Ningxia 750021, PR China.
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13
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Li YH, Tang ZR, Xu YJ. Multifunctional graphene-based composite photocatalysts oriented by multifaced roles of graphene in photocatalysis. CHINESE JOURNAL OF CATALYSIS 2022. [DOI: 10.1016/s1872-2067(21)63871-8] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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14
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Feng C, Wu P, Li Q, Liu J, Wang D, Liu B, Wang T, Hu H, Xue G. Amorphization and defect engineering in constructing ternary composite Ag/PW 10V 2/am-TiO 2−x for enhanced photocatalytic nitrogen fixation. NEW J CHEM 2022. [DOI: 10.1039/d1nj05917c] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Ag/PW10V2/am-TiO2−x was designed by decorating OVs-enriched am-TiO2−x with Ag NPs and PW10V2. The formed Z-scheme heterojunction, Ag–am-TiO2−x interface and plentiful surface OVs account for its high photocatalytic efficiency in nitrogen fixation.
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Affiliation(s)
- Caiting Feng
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry, College of Chemistry & Materials Science, Northwest University, Xi’an, 710127, P. R. China
| | - Panfeng Wu
- School of Chemistry and Chemical Engineering, Xi’an Shiyou University, Xi’an, 710065, P. R. China
| | - Qinlong Li
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry, College of Chemistry & Materials Science, Northwest University, Xi’an, 710127, P. R. China
| | - Jiquan Liu
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry, College of Chemistry & Materials Science, Northwest University, Xi’an, 710127, P. R. China
| | - Danjun Wang
- Shaanxi Key Laboratory of Chemical Reaction Engineering, College of Chemistry & Chemical Engineering, Yan’an University, Yan’an, 716000, P. R. China
| | - Bin Liu
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry, College of Chemistry & Materials Science, Northwest University, Xi’an, 710127, P. R. China
| | - Tianyu Wang
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry, College of Chemistry & Materials Science, Northwest University, Xi’an, 710127, P. R. China
| | - Huaiming Hu
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry, College of Chemistry & Materials Science, Northwest University, Xi’an, 710127, P. R. China
| | - Ganglin Xue
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry, College of Chemistry & Materials Science, Northwest University, Xi’an, 710127, P. R. China
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15
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Li C, Gu M, Gao M, Liu K, Zhao X, Cao N, Feng J, Ren Y, Wei T, Zhang M. N-doping TiO 2 hollow microspheres with abundant oxygen vacancies for highly photocatalytic nitrogen fixation. J Colloid Interface Sci 2021; 609:341-352. [PMID: 34896834 DOI: 10.1016/j.jcis.2021.11.180] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2021] [Revised: 11/24/2021] [Accepted: 11/28/2021] [Indexed: 12/16/2022]
Abstract
Photocatalytic fixation of nitrogen to ammonia (NH3) is a green but low-efficiency technology due to the high recombination of photo-generated carriers and poor light absorption of photocatalysts. Generally, the adsorption capacity for N2 and the band position of TiO2 are responsible for bandgap, light-adsorption, and the separation of photocarriers. Therefore, they play crucial roles to improve catalytic activity. Herein, N-doping TiO2 hollow microspheres (NTO-0.5) with oxygen vacancies were synthesized via a hydrothermal method using phenolic resin microsphere as a template. The obtained NTO-0.5 achieves an impressive ammonia yield of 80.09 μmol gcat-1h-1. Oxygen vacancies of NTO-0.5 were confirmed by ESR, Raman, XPS, Zeta potential, and H2O2 treatment for reducing oxygen vacancies. The ammonia yield of NTO-0.5 decreases to 34.78 μmol gcat-1h-1 after reducing oxygen vacancies by H2O2 treatment, which demonstrates the importance of oxygen vacancies. The oxygen vacancies narrow the bandgap from 3.18 eV to 2.83 eV and impede the recombination of photo-generated carriers. The hollow microspheres structure is conducive to light absorption and utilization. Therefore, the synergistic effect between the oxygen vacancies and the hollow microspheres structure boosts the efficiency of photocatalytic nitrogen fixation. After four cycles, the ammonia production yield still maintains at 76.52 μmol gcat-1h-1, meaning high stability. This work provides a new insight into the construction of catalysts with oxygen vacancies to enhance photocatalytic nitrogen fixation performance.
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Affiliation(s)
- Chang Li
- Key Laboratory of Superlight Materials & Surface Technology of Ministry of Education, Harbin Engineering University, Harbin 150001, PR China
| | - MengZhen Gu
- Key Laboratory of Superlight Materials & Surface Technology of Ministry of Education, Harbin Engineering University, Harbin 150001, PR China
| | - MingMing Gao
- Key Laboratory of Superlight Materials & Surface Technology of Ministry of Education, Harbin Engineering University, Harbin 150001, PR China
| | - KeNing Liu
- Key Laboratory of Superlight Materials & Surface Technology of Ministry of Education, Harbin Engineering University, Harbin 150001, PR China
| | - XinYu Zhao
- Key Laboratory of Superlight Materials & Surface Technology of Ministry of Education, Harbin Engineering University, Harbin 150001, PR China
| | - NaiWen Cao
- Key Laboratory of Superlight Materials & Surface Technology of Ministry of Education, Harbin Engineering University, Harbin 150001, PR China
| | - Jing Feng
- Key Laboratory of Superlight Materials & Surface Technology of Ministry of Education, Harbin Engineering University, Harbin 150001, PR China.
| | - YueMing Ren
- Key Laboratory of Superlight Materials & Surface Technology of Ministry of Education, Harbin Engineering University, Harbin 150001, PR China
| | - Tong Wei
- School of Materials Science and Engineering, China University of Petroleum (East China), Qingdao 266580, PR China.
| | - MingYi Zhang
- Key Laboratory for Photonic and Electronic Bandgap Materials, Ministry of Education, School of Physics and Electronic Engineering, Harbin Normal University, Harbin 150025, PR China
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16
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A solar-to-chemical conversion efficiency up to 0.26% achieved in ambient conditions. Proc Natl Acad Sci U S A 2021; 118:2115666118. [PMID: 34750272 DOI: 10.1073/pnas.2115666118] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/13/2021] [Indexed: 11/18/2022] Open
Abstract
Artificial photosynthesis in ambient conditions is much less efficient than the solar-to-biomass conversion (SBC) processes in nature. Here, we successfully mimic the NADP-mediated photosynthetic processes in green plants by introducing redox moieties as the electron acceptors in the present conjugated polymeric photocatalyst. The current artificial process substantially promotes the charge carrier separation efficiency and the oxygen reduction efficiency, achieving a photosynthesis rate for converting Earth-abundant water and oxygen in air into hydrogen peroxide as high as 909 μmol⋅g-1⋅h-1 and a solar-to-chemical conversion (SCC) efficiency up to 0.26%. The SCC efficiency is more than two times higher than the average SBC efficiency in nature (0.1%) and the highest value under ambient conditions. This study presents a strategy for efficient SCC in the future.
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17
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Hu K, Huang Z, Zeng L, Zhang Z, Mei L, Chai Z, Shi W. Recent Advances in MOF‐Based Materials for Photocatalytic Nitrogen Fixation. Eur J Inorg Chem 2021. [DOI: 10.1002/ejic.202100748] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Affiliation(s)
- Kongqiu Hu
- Laboratory of Nuclear Energy Chemistry Institute of High Energy Physics Chinese Academy of Sciences Beijing 100049 China
| | - Zhiwei Huang
- Laboratory of Nuclear Energy Chemistry Institute of High Energy Physics Chinese Academy of Sciences Beijing 100049 China
- Engineering Laboratory of Advanced Energy Materials Ningbo Institute of Materials Technology and Engineering Chinese Academy of Sciences Ningbo 315201 China
| | - Liwen Zeng
- Laboratory of Nuclear Energy Chemistry Institute of High Energy Physics Chinese Academy of Sciences Beijing 100049 China
| | - Zhihui Zhang
- Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology Advanced Catalysis and Green Manufacturing Collaborative Innovation Center Changzhou University Changzhou 213164 China
| | - Lei Mei
- Laboratory of Nuclear Energy Chemistry Institute of High Energy Physics Chinese Academy of Sciences Beijing 100049 China
| | - Zhifang Chai
- Engineering Laboratory of Advanced Energy Materials Ningbo Institute of Materials Technology and Engineering Chinese Academy of Sciences Ningbo 315201 China
| | - Weiqun Shi
- Laboratory of Nuclear Energy Chemistry Institute of High Energy Physics Chinese Academy of Sciences Beijing 100049 China
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18
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Wu Y, Dong J, Liu C, Jing X, Liu H, Guo Y, Chi Y, Hu C. Reduced polyoxomolybdate immobilized on reduced graphene oxide for rapid catalytic decontamination of a sulfur mustard simulant. Dalton Trans 2021; 50:9796-9803. [PMID: 34180935 DOI: 10.1039/d1dt01265g] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Keggin-type polyoxometalates (POMs) were immobilized on poly(diallyldimethylammonium chloride) (PDDA) functionalized reduced graphene oxide (rGO) by a facile and broad-spectrum hydrothermal method. The prepared POMs@PDDA-rGO composites (POM = H3PMo12O40, H3PW12O40, H5PMo10V2O40) have been thoroughly characterized using a series of techniques. The three composites can catalyze the oxidative decontamination of a sulfur mustard simulant, 2-chloroethyl ethyl sulfide (CEES) in the order of PMo12@PDDA-rGO > PMo10V2@PDDA-rGO > PW12@PDDA-rGO. Notably, under ambient conditions PMo12@PDDA-rGO can convert 99% of CEES within 30 min in the presence of nearly stoichiometric aqueous H2O2 (3 wt%) and its catalytic activity is significantly higher than that of homogeneous H3PMo12O40. XPS spectral analysis and control experiments indicate that the Mo center of POM is reduced from +6 to +5 during the hydrothermal process, and the excellent catalytic performance is related to the reduction of Mo. Moreover, the PMo12@PDDA-rGO composite is stable during the decontamination process and it can be used for at least five cycles without loss of activity.
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Affiliation(s)
- Yanyan Wu
- Key Laboratory of Cluster Science Ministry of Education, Beijing Key Laboratory of Photoelectroic/Electrophotonic Conversion Materials, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing 102488, People's Republic of China.
| | - Jing Dong
- College of Chemistry and Materials Engineering, Beijing Technology and Business University (BTBU), 11 Fucheng Road, Beijing 100048, People's Republic of China.
| | - Chengpeng Liu
- Key Laboratory of Cluster Science Ministry of Education, Beijing Key Laboratory of Photoelectroic/Electrophotonic Conversion Materials, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing 102488, People's Republic of China.
| | - Xiaoting Jing
- Key Laboratory of Cluster Science Ministry of Education, Beijing Key Laboratory of Photoelectroic/Electrophotonic Conversion Materials, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing 102488, People's Republic of China.
| | - Huifang Liu
- Key Laboratory of Cluster Science Ministry of Education, Beijing Key Laboratory of Photoelectroic/Electrophotonic Conversion Materials, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing 102488, People's Republic of China.
| | - Yue Guo
- Key Laboratory of Cluster Science Ministry of Education, Beijing Key Laboratory of Photoelectroic/Electrophotonic Conversion Materials, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing 102488, People's Republic of China.
| | - Yingnan Chi
- Key Laboratory of Cluster Science Ministry of Education, Beijing Key Laboratory of Photoelectroic/Electrophotonic Conversion Materials, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing 102488, People's Republic of China.
| | - Changwen Hu
- Key Laboratory of Cluster Science Ministry of Education, Beijing Key Laboratory of Photoelectroic/Electrophotonic Conversion Materials, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing 102488, People's Republic of China.
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19
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Ziegenbalg D, Zander J, Marschall R. Photocatalytic Nitrogen Reduction: Challenging Materials with Reaction Engineering. CHEMPHOTOCHEM 2021. [DOI: 10.1002/cptc.202100084] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Dirk Ziegenbalg
- Institute of Chemical Engineering Ulm University Albert-Einstein-Allee 11 89081 Ulm Germany
| | - Judith Zander
- Department of Chemistry University of Bayreuth Universitätsstrasse 30 95447 Bayreuth Germany
| | - Roland Marschall
- Department of Chemistry University of Bayreuth Universitätsstrasse 30 95447 Bayreuth Germany
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20
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Huang R, Li X, Gao W, Zhang X, Liang S, Luo M. Recent advances in photocatalytic nitrogen fixation: from active sites to ammonia quantification methods. RSC Adv 2021; 11:14844-14861. [PMID: 35423978 PMCID: PMC8697998 DOI: 10.1039/d0ra10439f] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2020] [Accepted: 03/31/2021] [Indexed: 12/16/2022] Open
Abstract
Photocatalytic nitrogen fixation has become a hot topic in recent years due to its mild and sustainable advantages. While modifying the photocatalyst to enhance its electron separation, light absorption and nitrogen reduction abilities, the role of the active sites in the catalytic reaction cannot be ignored because the N[triple bond, length as m-dash]N nitrogen bond is too strong to activate. This review summarizes the recent research on nitrogen fixation, focusing on the active sites for N2 on the catalyst surface, classifying common active sites, explaining the main role and additional role of the active sites in catalytic reactions, and discussing the methods to increase the number of active sites and their activation ability. Finally, the outlook for future research is presented. It is hoped this review could help researchers understand more about the activation of the nitrogen molecules and lead more efforts into research on nitrogen fixation photocatalysts.
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Affiliation(s)
- Rong Huang
- State Key Laboratory of High-efficiency Utilization of Coal and Green Chemical Engineering, School of Chemistry and Chemical Engineering, Ningxia University Yinchuan Ningxia 750021 China
- Ningxia Key Laboratory for Photovoltaic Materials, Ningxia University Yinchuan Ningxia 750021 China
| | - Xiaoman Li
- State Key Laboratory of High-efficiency Utilization of Coal and Green Chemical Engineering, School of Chemistry and Chemical Engineering, Ningxia University Yinchuan Ningxia 750021 China
| | - Wanguo Gao
- State Key Laboratory of High-efficiency Utilization of Coal and Green Chemical Engineering, School of Chemistry and Chemical Engineering, Ningxia University Yinchuan Ningxia 750021 China
| | - Xu Zhang
- State Key Laboratory of High-efficiency Utilization of Coal and Green Chemical Engineering, School of Chemistry and Chemical Engineering, Ningxia University Yinchuan Ningxia 750021 China
| | - Sen Liang
- Ningxia Key Laboratory for Photovoltaic Materials, Ningxia University Yinchuan Ningxia 750021 China
| | - Min Luo
- State Key Laboratory of High-efficiency Utilization of Coal and Green Chemical Engineering, School of Chemistry and Chemical Engineering, Ningxia University Yinchuan Ningxia 750021 China
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21
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Wu PF, Xue Q, Wang TY, Li SJ, Li GP, Xue GL. A PW 12/Ag functionalized mesoporous silica-coated magnetic Fe 3O 4 core-shell composite as an efficient and recyclable photocatalyst. Dalton Trans 2021; 50:578-586. [PMID: 33464251 DOI: 10.1039/d0dt03882b] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The novel composite, Fe3O4@SiO2@mSiO2-PW12/Ag, was successfully prepared by in situ loading Ag nanoparticles (Ag NPs) on the surface of grafted phosphotungstate (denoted as PW12) Fe3O4@SiO2@mSiO2via a photoreduction deposition method. PW12 not only acts as a reducing agent and stabilizer for Ag NPs but also as a bridge to link Ag NPs and the SiO2 shell in the loading process. Its activity toward the photodegradation of methyl orange (MO) and photoreduction of Cr2O72- anions was evaluated. Experimental results showed that Fe3O4@SiO2@mSiO2-PW12/Ag with 5.3 wt% Ag loading and 18.65 wt% of PW12 exhibits the highest photocatalytic efficacy, and complete degradation of MO and 91.2% photoreduction of Cr(vi) were realized under simulated sunlight for 75 min, respectively. The enhanced catalytic activities of the composite are due to its high specific surface area, the synergistic effect among the components and the formation of a heterojunction of PW12/Ag. The possible enhanced photocatalytic mechanism is proposed. The catalyst is durable and can be easily recovered using a magnet for recycling without a significant loss of catalytic activity.
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Affiliation(s)
- Pan-Feng Wu
- School of Chemistry and Chemical Engineering, Xi'an Shiyou University, 18 Dianzi Road, Yanta District, Xi'an, 710065, P. R. China. and Key Laboratory of Synthetic and Natural Functional Molecule Chemistry, College of Chemistry & Materials Science, Northwest University, 1 Xuefu Ave., Xi'an, 710127, P. R. China.
| | - Qi Xue
- Xi'an Modern Chemistry Research Institute, Xi'an, 710065, P. R. China
| | - Tian-Yu Wang
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry, College of Chemistry & Materials Science, Northwest University, 1 Xuefu Ave., Xi'an, 710127, P. R. China.
| | - Shan-Jian Li
- School of Chemistry and Chemical Engineering, Xi'an Shiyou University, 18 Dianzi Road, Yanta District, Xi'an, 710065, P. R. China.
| | - Gao-Peng Li
- Key Laboratory of Magnetic Molecules & Magnetic Information Materials (Ministry of Education), School of Chemistry & Material Science, Shanxi Normal University, Linfen 041004, P. R. China.
| | - Gang-Lin Xue
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry, College of Chemistry & Materials Science, Northwest University, 1 Xuefu Ave., Xi'an, 710127, P. R. China.
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22
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Bajiri MA, Naik HSB, Hezam A, Viswanath R, Al-Zaqri N, Alsalme A, Alharthi FA, Alasmari R. 2D g-C 3N 4 as a bifunctional photocatalyst for co-catalyst and sacrificial agent-free photocatalytic N 2 fixation and dye photodegradation. NEW J CHEM 2021. [DOI: 10.1039/d1nj00314c] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Photocatalytic N2 fixation is an ecofriendly technology to produce ammonia.
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Affiliation(s)
- Mohammed Abdullah Bajiri
- Department of Studies and Research in Industrial Chemistry
- School of Chemical Sciences
- Kuvempu University
- Shankaraghatta-577 451
- India
| | - H. S. Bhojya Naik
- Department of Studies and Research in Industrial Chemistry
- School of Chemical Sciences
- Kuvempu University
- Shankaraghatta-577 451
- India
| | - Abdo Hezam
- Center for Materials Science and Technology
- University of Mysore
- Mysuru 570 006
- India
- Department of Physics, Faculty of Science
| | - R. Viswanath
- Department of Studies and Research in Industrial Chemistry
- School of Chemical Sciences
- Kuvempu University
- Shankaraghatta-577 451
- India
| | - Nabil Al-Zaqri
- Department of Chemistry, College of Science, King Saud University
- Riyadh, 11451
- Saudi Arabia
| | - Ali Alsalme
- Department of Chemistry, College of Science, King Saud University
- Riyadh, 11451
- Saudi Arabia
| | - Fahad A. Alharthi
- Department of Chemistry, College of Science, King Saud University
- Riyadh, 11451
- Saudi Arabia
| | - Raghd Alasmari
- Department of Chemistry, College of Science, King Saud University
- Riyadh, 11451
- Saudi Arabia
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23
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Zhang L, Chen W, Wang T, Li Y, Ma C, Zheng Y, Gong J. Polyoxometalate modified transparent metal selenide counter electrodes for high-efficiency bifacial dye-sensitized solar cells. Inorg Chem Front 2021. [DOI: 10.1039/d1qi00447f] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We present a facile one-step hydrothermal approach for the growth of PW11Co/Co0.85Se on a conductive glass substrate, which could be used as transparent CE in bifacial DSSCs with enhanced front and back efficiencies of 7.56% and 5.82%, respectively.
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Affiliation(s)
- Lu Zhang
- Key Laboratory of Polyoxometalate and Reticular Material Chemistry of Ministry of Education
- Department of Chemistry
- Northeast Normal University
- Changchun
- China
| | - Weichao Chen
- Key Laboratory of Polyoxometalate and Reticular Material Chemistry of Ministry of Education
- Department of Chemistry
- Northeast Normal University
- Changchun
- China
| | - Ting Wang
- Key Laboratory of Polyoxometalate and Reticular Material Chemistry of Ministry of Education
- Department of Chemistry
- Northeast Normal University
- Changchun
- China
| | - Yunjiang Li
- Key Laboratory of Polyoxometalate and Reticular Material Chemistry of Ministry of Education
- Department of Chemistry
- Northeast Normal University
- Changchun
- China
| | - Chunhui Ma
- Key Laboratory of Polyoxometalate and Reticular Material Chemistry of Ministry of Education
- Department of Chemistry
- Northeast Normal University
- Changchun
- China
| | - Yuxiao Zheng
- Key Laboratory of Polyoxometalate and Reticular Material Chemistry of Ministry of Education
- Department of Chemistry
- Northeast Normal University
- Changchun
- China
| | - Jian Gong
- Key Laboratory of Polyoxometalate and Reticular Material Chemistry of Ministry of Education
- Department of Chemistry
- Northeast Normal University
- Changchun
- China
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24
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Exploring the influence of metal ions/ligands ratio for the structure of polyoxometalate-based host-guest compounds, exhibiting different magnetic phenomena. J Mol Struct 2020. [DOI: 10.1016/j.molstruc.2020.128566] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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25
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Cai L, Hu J, Li M, Yin P. Hybrid catalysts of molybdovanadophosphoric acid and g-C 3N 4 with tunable bandgaps. Dalton Trans 2020; 49:10724-10728. [PMID: 32720655 DOI: 10.1039/d0dt02138e] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The integration of semiconductors and polyoxometalates provides promising benefits for the rational tuning of hybrid materials' electronic band structures; however, the intrinsic influence of certain hybridization approaches on the resulting bandgaps of their complexes has seldom been noted. Herein, graphitic carbon nitride and a series of phosphovanadomolybdates (H3+xPMo12-xVxO40, x = 0-3) have been complexed through electrostatic charge attraction, and their optical and electronic properties are fully explored to investigate the effect of minor variations of the polyoxometalate structures on the hybrid bandgaps and electronic structures. The conduction band edge of the hybrids increases along with the expansion of the number of vanadium centers in the phosphovanadomolybdate, providing potential guidance for the design of hybrid catalysts.
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Affiliation(s)
- Linkun Cai
- South China Advanced Institute for Soft Matter Science and Technology, South China University of Technology, Guangzhou 510641, P. R. China. and State Key Laboratory of Luminescent Materials and Devices, South China University of Technology, Guangzhou 510641, P. R. China.
| | - Jie Hu
- South China Advanced Institute for Soft Matter Science and Technology, South China University of Technology, Guangzhou 510641, P. R. China. and State Key Laboratory of Luminescent Materials and Devices, South China University of Technology, Guangzhou 510641, P. R. China.
| | - Mu Li
- South China Advanced Institute for Soft Matter Science and Technology, South China University of Technology, Guangzhou 510641, P. R. China. and State Key Laboratory of Luminescent Materials and Devices, South China University of Technology, Guangzhou 510641, P. R. China.
| | - Panchao Yin
- South China Advanced Institute for Soft Matter Science and Technology, South China University of Technology, Guangzhou 510641, P. R. China. and State Key Laboratory of Luminescent Materials and Devices, South China University of Technology, Guangzhou 510641, P. R. China.
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26
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Li XH, He P, Wang T, Zhang XW, Chen WL, Li YG. Keggin-Type Polyoxometalate-Based ZIF-67 for Enhanced Photocatalytic Nitrogen Fixation. CHEMSUSCHEM 2020; 13:2769-2778. [PMID: 32112521 DOI: 10.1002/cssc.202000328] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/06/2020] [Revised: 02/26/2020] [Indexed: 06/10/2023]
Abstract
The photocatalytic reduction of N2 to NH3 is considered a promising strategy to alleviate human need for accessible nitrogen and environmental pollution, for which developing a photocatalyst is an effective method to complete the transformation of this process. We firstly design a series of highly efficient and stable polyoxometalates (POMs)-based zeolitic imidazolate framework-67 (ZIF-67) photocatalysts for N2 reduction. ZIF-67 can effectively fix N2 owing to its porosity. Integration of POMs cluster contributes enormous advantages in terms of broadening the absorption spectrum to improve sunlight utilization, enhance the stability of the materials, effectively inhibit the recombination of photo-generated electron-hole pairs, and reduce charge-transfer impedance. POMs can absorb light to convert into reduced POMs, which have stronger reducing ability to provide ample electrons to reduce N2 . The reduced POMs can recover their oxidation state through contact with an oxidant, which forms a self-recoverable and recyclable photocatalytic fixing N2 system. The photocatalytic activity enhances with the increasing number V substitutions in the POMs. Satisfactorily, ZIF-67@K11 [PMo4 V8 O40 ] (PMo4 V8 ) displays the most significant photocatalytic N2 activity with a NH3 yield of 149.0 μmol L-1 h-1 , which is improved by 83.5 % (ZIF-67) and 78.9 % (PMo4 V8 ). The introduction of POMs provides new insights for the design of high-performance photocatalyst nanomaterials to reduce N2 .
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Affiliation(s)
- Xiao-Hong Li
- Key Laboratory of Polyoxometalate Science of Ministry of Education, Department of Chemistry, Northeast Normal University, Changchun, 130024, P.R. China
| | - Peng He
- Key Laboratory of Polyoxometalate Science of Ministry of Education, Department of Chemistry, Northeast Normal University, Changchun, 130024, P.R. China
| | - Ting Wang
- Key Laboratory of Polyoxometalate Science of Ministry of Education, Department of Chemistry, Northeast Normal University, Changchun, 130024, P.R. China
| | - Xiao-Wen Zhang
- Key Laboratory of Polyoxometalate Science of Ministry of Education, Department of Chemistry, Northeast Normal University, Changchun, 130024, P.R. China
| | - Wei-Lin Chen
- Key Laboratory of Polyoxometalate Science of Ministry of Education, Department of Chemistry, Northeast Normal University, Changchun, 130024, P.R. China
| | - Yang-Guang Li
- Key Laboratory of Polyoxometalate Science of Ministry of Education, Department of Chemistry, Northeast Normal University, Changchun, 130024, P.R. China
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27
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Liu Y, Li J, Ge X, Yi S, Wang H, Liu Y, Luo J. Macroscale Superlubricity Achieved on the Hydrophobic Graphene Coating with Glycerol. ACS APPLIED MATERIALS & INTERFACES 2020; 12:18859-18869. [PMID: 32233416 DOI: 10.1021/acsami.0c01515] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Introduction of graphene-family nanoflakes in liquid results in a reduction in friction and enhanced wear resistance. However, the high demand for dispersity and stability of the nanoflakes in liquid largely restricted the choice of graphene-family nanoflakes thus far. This study proposed a new strategy to overcome this limitation, involving the formation of a graphene coating with deposited graphene-family nanoflakes, followed by the lubrication of the coating with glycerol solution. Pristine graphene (PG), fluorinated graphene (FG), and graphene oxide (GO) nanoflakes were chosen to be deposited on the respective SiO2 substrates to form graphene coatings, and then an aqueous solution of glycerol was used as lubricant. The coefficient of friction (COF) and wear rate were reduced for all deposited coatings. However, the PG coating exhibited better lubrication and antiwear performance than FG and GO coatings. A robust superlubricity with COF of approximately 0.004 can be achieved by combining glycerol with the PG coating. The superlubricity mechanism was attributed to the formation of a tribofilm, mainly composed of graphene nanoflakes in the contact zone. The extremely low friction achieved on the hydrophobic graphene coating with liquid can aid in the development of a high-performing new lubrication system for industrial applications.
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Affiliation(s)
- Yanfei Liu
- State Key Laboratory of Tribology, Tsinghua University, Beijing 100084, China
| | - Jinjin Li
- State Key Laboratory of Tribology, Tsinghua University, Beijing 100084, China
| | - Xiangyu Ge
- State Key Laboratory of Tribology, Tsinghua University, Beijing 100084, China
| | - Shuang Yi
- State Key Laboratory of Tribology, Tsinghua University, Beijing 100084, China
| | - Hongdong Wang
- State Key Laboratory of Tribology, Tsinghua University, Beijing 100084, China
| | - Yuhong Liu
- State Key Laboratory of Tribology, Tsinghua University, Beijing 100084, China
| | - Jianbin Luo
- State Key Laboratory of Tribology, Tsinghua University, Beijing 100084, China
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28
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Shiraishi Y, Hashimoto M, Chishiro K, Moriyama K, Tanaka S, Hirai T. Photocatalytic Dinitrogen Fixation with Water on Bismuth Oxychloride in Chloride Solutions for Solar-to-Chemical Energy Conversion. J Am Chem Soc 2020; 142:7574-7583. [PMID: 32267152 DOI: 10.1021/jacs.0c01683] [Citation(s) in RCA: 86] [Impact Index Per Article: 17.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Ammonia is an indispensable chemical. Photocatalytic NH3 production via dinitrogen fixation using water by sunlight illumination under ambient conditions is a promising strategy, although previously reported catalysts show insufficient activity. Herein, we showed that ultraviolet light irradiation of a semiconductor, bismuth oxychloride with surface oxygen vacancies (BiOCl-OVs), in water containing chloride anions (Cl-) under N2 flow efficiently produces NH3. The surface OVs behave as the N2 reduction sites by the photoformed conduction band electrons. The valence band holes are consumed by self-oxidation of interlayer Cl- on the catalyst. The hypochloric acid (HClO) formed absorbs ultraviolet light and undergoes photodecomposition into O2 and Cl-. These consecutive photoreactions produce NH3 with water as the electron donor. The Cl- in solution compensates for the removed interlayer Cl- and inhibits catalyst deactivation. Simulated sunlight illumination of the catalyst in seawater stably generates NH3 with 0.05% solar-to-chemical conversion efficiency, thus exhibiting significant potential of the seawater system for artificial photosynthesis.
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Affiliation(s)
- Yasuhiro Shiraishi
- Research Center for Solar Energy Chemistry, and Division of Chemical Engineering, Graduate School of Engineering Science, Osaka University, Toyonaka 560-8531, Japan
| | - Masaki Hashimoto
- Research Center for Solar Energy Chemistry, and Division of Chemical Engineering, Graduate School of Engineering Science, Osaka University, Toyonaka 560-8531, Japan
| | - Kiyomichi Chishiro
- Research Center for Solar Energy Chemistry, and Division of Chemical Engineering, Graduate School of Engineering Science, Osaka University, Toyonaka 560-8531, Japan
| | - Kenta Moriyama
- Research Center for Solar Energy Chemistry, and Division of Chemical Engineering, Graduate School of Engineering Science, Osaka University, Toyonaka 560-8531, Japan
| | - Shunsuke Tanaka
- Department of Chemical, Energy, and Environmental Engineering, Kansai University, Suita 564-8680, Japan
| | - Takayuki Hirai
- Research Center for Solar Energy Chemistry, and Division of Chemical Engineering, Graduate School of Engineering Science, Osaka University, Toyonaka 560-8531, Japan
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29
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He P, Li X, Wang T, Chen W, Zhang H, Chen W. Keggin-type polyoxometalate/thiospinel octahedron heterostructures for photoelectronic devices. Inorg Chem Front 2020. [DOI: 10.1039/d0qi00371a] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Keggin-type polyoxometalate CoW12/CoIn2S4 thiospinel heterostructures promote the further development in photoelectronic devices due to highly efficient electrocatalytic triiodide reduction, low charge-transfer resistance, and the high amount of exposed active site.
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Affiliation(s)
- Peng He
- Key Laboratory of Polyoxometalate Science of Ministry of Education
- Department of Chemistry
- Northeast Normal University
- Changchun 130024
- P. R. China
| | - Xiaohong Li
- Key Laboratory of Polyoxometalate Science of Ministry of Education
- Department of Chemistry
- Northeast Normal University
- Changchun 130024
- P. R. China
| | - Ting Wang
- Key Laboratory of Polyoxometalate Science of Ministry of Education
- Department of Chemistry
- Northeast Normal University
- Changchun 130024
- P. R. China
| | - Weichao Chen
- Key Laboratory of Polyoxometalate Science of Ministry of Education
- Department of Chemistry
- Northeast Normal University
- Changchun 130024
- P. R. China
| | - Hong Zhang
- Key Laboratory of Polyoxometalate Science of Ministry of Education
- Department of Chemistry
- Northeast Normal University
- Changchun 130024
- P. R. China
| | - Weilin Chen
- Key Laboratory of Polyoxometalate Science of Ministry of Education
- Department of Chemistry
- Northeast Normal University
- Changchun 130024
- P. R. China
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