1
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Qin K, Zang D, Wei Y. Polyoxometalates based compounds for green synthesis of aldehydes and ketones. CHINESE CHEM LETT 2022. [DOI: 10.1016/j.cclet.2022.107999] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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2
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Taghiyar H, Yadollahi B, Moshtaghian SJ, Talebi A, Abbasi Kajani A. PMMA nanofibers containing keplerate-type polyoxometalate and metronidazole: Preparation and wound-healing effect in a rat model. J Drug Deliv Sci Technol 2022. [DOI: 10.1016/j.jddst.2022.103140] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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3
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Aerobic photoxidation of sulfides using unique hybrid polyoxometalate under visible light. CATAL COMMUN 2021. [DOI: 10.1016/j.catcom.2021.106283] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
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4
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Bisht NS, Mehta SPS, Sahoo NG, Dandapat A. The room temperature synthesis of a CuO-Bi-BiOBr ternary Z-scheme photocatalyst for enhanced sunlight driven alcohol oxidation. Dalton Trans 2021; 50:5001-5010. [PMID: 33877198 DOI: 10.1039/d1dt00158b] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
The room temperature synthesis of an all-solid-state Z-scheme CuO-doped BiOBr (CuO-Bi-BiOBr) photocatalyst has been described. These CuO-Bi-BiOBr ternary heterojunctions exhibit efficient photocatalytic activities for selective alcohol oxidation. The structures, morphologies, and compositions of the nanostructures were well characterized using field-emission scanning electron microscopy (FESEM), transmission electron microscopy (TEM) and atomic absorption spectroscopy (AAS). The X-ray diffraction (XRD) pattern of the as-synthesized nanostructures confirms the formation of phase-segregated CuO and BiOBr nanocrystals, whereas X-ray photoelectron spectroscopy (XPS) and high-resolution transmission electron microscopy (HRTEM) analyses clearly indicate the formation of metallic bismuth nanoparticles (NPs). Next, the developed CuO-Bi-BiOBr ternary heterojunctions were applied as an efficient photocatalyst for the oxidation of alcohols into their corresponding aldehydes/ketones with high selectivity (>99%) and high conversion ratios (>99%). Herein, Bi metal NPs act as an electron mediator and bridge the connectivity between the two semiconductors, BiOBr and CuO, and, thus, a Z-scheme heterojunction is established. As expected, CuO-Bi-BiOBr has shown significantly superior activities compared to those of pure BiOBr. A possible mechanism for the photocatalytic oxidation process has been proposed. Radical scavenging experiments suggest that the active species, h+, ˙OH, e-, and ˙O2-, are dominant in the alcohol oxidation process. The as-synthesized CuO-Bi-BiOBr was reused several times without any significant deterioration in the original activities and it thus possesses relatively high stability for practical applications.
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Affiliation(s)
- Narendra Singh Bisht
- Department of Chemistry, D.S.B Campus, Kumaun University, Nainital, Uttarakhand, India.
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5
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Boosting multiple photo-assisted and temperature controlled reactions with a single redox-switchable catalyst: Solvents as internal substrates and reducing agent. J Catal 2020. [DOI: 10.1016/j.jcat.2020.04.026] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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6
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Taghiyar H, Yadollahi B. New perspective to catalytic epoxidation of olefins by Keplerate containing Keggin polyoxometalates. Polyhedron 2018. [DOI: 10.1016/j.poly.2018.09.015] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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7
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Chen Q, Shen C, He L. Recent advances of polyoxometalate-catalyzed selective oxidation based on structural classification. ACTA CRYSTALLOGRAPHICA SECTION C-STRUCTURAL CHEMISTRY 2018; 74:1182-1201. [PMID: 30398171 DOI: 10.1107/s2053229618010902] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/13/2018] [Accepted: 07/30/2018] [Indexed: 12/31/2022]
Abstract
The structural diversity and tenability observed in POMs has encouraged extensive investigations into their catalytic activity. Based on the structural classification of POMs, this review summarizes recent advances relating to POM-catalyzed selective oxidation and places most emphasis on dynamic developments from 2015 onwards. Work which contributes to comparing the catalytic performance of POMs with delicate structural differences (e.g. the same type of POM structure with differences of the heteroatom, addenda, protonated state or counter-ion) and in elucidating the origin/distinction of catalytic activity, as well as reasonable mechanisms, are especially highlighted.
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Affiliation(s)
- Qiongyao Chen
- State Key Laboratory for Oxo Synthesis and Selective Oxidation, Suzhou Research Institute of LICP, Lanzhou Institute of Chemical Physics (LICP), Chinese Academy of Sciences, Lanzhou 730000, People's Republic of China
| | - Chaoren Shen
- State Key Laboratory for Oxo Synthesis and Selective Oxidation, Suzhou Research Institute of LICP, Lanzhou Institute of Chemical Physics (LICP), Chinese Academy of Sciences, Lanzhou 730000, People's Republic of China
| | - Lin He
- State Key Laboratory for Oxo Synthesis and Selective Oxidation, Suzhou Research Institute of LICP, Lanzhou Institute of Chemical Physics (LICP), Chinese Academy of Sciences, Lanzhou 730000, People's Republic of China
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8
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Zhizhina EG, Rodikova YA, Podyacheva OY, Pai ZP. Regenerating Spent Solutions of Vanadium-containing Heteropoly Acids in the Presence of Additives. Z Anorg Allg Chem 2018. [DOI: 10.1002/zaac.201800215] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Elena G. Zhizhina
- Department of Fine Organic Synthesis and Renewable Energy Sources; Boreskov Institute of Catalysis SB RAS; pr. Akad. Lavrentieva 5 630090 Novosibirsk Russian Federation
| | - Yulia A. Rodikova
- Department of Fine Organic Synthesis and Renewable Energy Sources; Boreskov Institute of Catalysis SB RAS; pr. Akad. Lavrentieva 5 630090 Novosibirsk Russian Federation
| | - Olga Yu. Podyacheva
- Department of Heterogeneous Catalysis; Boreskov Institute of Catalysis SB RAS; pr. Akad. Lavrentieva 5 630090 Novosibirsk Russian Federation
| | - Zinaida P. Pai
- Department of Fine Organic Synthesis and Renewable Energy Sources; Boreskov Institute of Catalysis SB RAS; pr. Akad. Lavrentieva 5 630090 Novosibirsk Russian Federation
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9
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Xu Q, Li Y, Ban R, Li Z, Han X, Ma P, Singh V, Wang J, Niu J. Polyoxotungstates incorporated organophosphonate and nickel: synthesis, characterization and efficient catalysis for epoxidation of allylic alcohols. Dalton Trans 2018; 47:13479-13486. [DOI: 10.1039/c8dt02590h] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
“Top-down” synthetic strategy was performed to incorporate nickel into the organophosphonate-based POTs showing superior catalysis for the epoxidation of allylic alcohols.
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Affiliation(s)
- Qiaofei Xu
- Henan Key Laboratory of Polyoxometalate Chemistry
- Institute of Molecular and Crystal Engineering
- College of Chemistry and Chemical Engineering
- Henan University
- Kaifeng
| | - Yingguang Li
- Henan Key Laboratory of Polyoxometalate Chemistry
- Institute of Molecular and Crystal Engineering
- College of Chemistry and Chemical Engineering
- Henan University
- Kaifeng
| | - Ran Ban
- Henan Key Laboratory of Polyoxometalate Chemistry
- Institute of Molecular and Crystal Engineering
- College of Chemistry and Chemical Engineering
- Henan University
- Kaifeng
| | - Zhao Li
- Henan Key Laboratory of Polyoxometalate Chemistry
- Institute of Molecular and Crystal Engineering
- College of Chemistry and Chemical Engineering
- Henan University
- Kaifeng
| | - Xiao Han
- Henan Key Laboratory of Polyoxometalate Chemistry
- Institute of Molecular and Crystal Engineering
- College of Chemistry and Chemical Engineering
- Henan University
- Kaifeng
| | - Pengtao Ma
- Henan Key Laboratory of Polyoxometalate Chemistry
- Institute of Molecular and Crystal Engineering
- College of Chemistry and Chemical Engineering
- Henan University
- Kaifeng
| | - Vikram Singh
- Henan Key Laboratory of Polyoxometalate Chemistry
- Institute of Molecular and Crystal Engineering
- College of Chemistry and Chemical Engineering
- Henan University
- Kaifeng
| | - Jingping Wang
- Henan Key Laboratory of Polyoxometalate Chemistry
- Institute of Molecular and Crystal Engineering
- College of Chemistry and Chemical Engineering
- Henan University
- Kaifeng
| | - Jingyang Niu
- Henan Key Laboratory of Polyoxometalate Chemistry
- Institute of Molecular and Crystal Engineering
- College of Chemistry and Chemical Engineering
- Henan University
- Kaifeng
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10
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Bhuyan B, Paul A, Devi M, Dhar SS. A silver NP-dispersed water extract of fly ash as a green and efficient medium for oxidant-free dehydrogenation of benzyl alcohols. RSC Adv 2018; 8:1313-1319. [PMID: 35540896 PMCID: PMC9076987 DOI: 10.1039/c7ra12225j] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2017] [Accepted: 12/12/2017] [Indexed: 11/21/2022] Open
Abstract
Herein, a green, efficient, and new catalytic system for dehydrogenative oxidation of benzyl alcohols using Ag nanoparticles (NPs) dispersed in water extract of fly ash (WEFA) has been developed. Various characterization techniques were performed to authenticate the formation of Ag@WEFA. The as-prepared Ag NPs (10–20 nm) were found to be dispersed in WEFA, as indicated by transmission electron microscopy (TEM) and scanning electron microscopy (SEM) images. With Ag@WEFA, a variety of substituted benzyl alcohols were efficiently converted to carbonyl compounds in high yields. All the reactions were deliberately carried out without using any ligand or hazardous organic solvent. This catalytic system involving WEFA is a genuinely new concept. It is, therefore, expected to attract attention from researchers working in the areas of sustainable chemistry. A new catalytic system for dehydrogenative oxidation of benzyl alcohols using Ag nanoparticles dispersed in WEFA is developed.![]()
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Affiliation(s)
- Bishal Bhuyan
- Department of Chemistry
- National Institute of Technology, Silchar
- Silchar-788010
- India
| | - Arijita Paul
- Department of Chemistry
- National Institute of Technology, Silchar
- Silchar-788010
- India
| | - Meghali Devi
- Department of Chemistry
- National Institute of Technology, Silchar
- Silchar-788010
- India
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11
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Choi YH, Kim HB, Yang IS, Sung SD, Choi YS, Kim J, Lee WI. Silicotungstate, a Potential Electron Transporting Layer for Low-Temperature Perovskite Solar Cells. ACS APPLIED MATERIALS & INTERFACES 2017; 9:25257-25264. [PMID: 28700209 DOI: 10.1021/acsami.7b05146] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Thin films of a heteropolytungstate, lithium silicotungstate (Li4SiW12O40, termed Li-ST), prepared by a solution process at low temperature, were successfully applied as electron transporting layer (ETL) of planar-type perovskite solar cells (PSCs). Dense and uniform Li-ST films were prepared on FTO glass by depositing a thin Li-ST buffer layer, followed by coating of a main Li-ST layer. The film thickness was controlled by varying the number of coating cycles, consisting of spin-coating and thermal treatment at 150 °C. In particular, by employing 60 nm-thick Li-ST layer obtained by two cycles of coating, the fabricated CH3NH3PbI3 PSC device demonstrates the photovoltaic conversion efficiency (PCE) of 14.26% with JSC of 22.16 mA cm-2, VOC of 0.993 mV and FF of 64.81%. The obtained PCE is significantly higher than that of the PSC employing a TiO2 layer processed at the same temperature (PCE = 12.27%). Spectroscopic analyses by time-resolved photoluminescence and pulsed light-induced transient measurement of photocurrent indicate that the Li-ST layer collects electrons from CH3NH3PbI3 more efficiently and also exhibits longer electron lifetime than the TiO2 layer thermally treated at 150 °C. Thus, Li-ST is considered to be a promising ETL material that can be applied for the fabrication of flexible PSC devices.
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Affiliation(s)
- Yoon Ho Choi
- Department of Chemistry and Chemical Engineering, Inha University , Incheon 22212, Korea
| | - Hyun Bin Kim
- Department of Chemistry and Chemical Engineering, Inha University , Incheon 22212, Korea
| | - In Seok Yang
- Department of Chemistry and Chemical Engineering, Inha University , Incheon 22212, Korea
| | - Sang Do Sung
- Department of Chemistry and Chemical Engineering, Inha University , Incheon 22212, Korea
| | - Young Sik Choi
- Department of Chemistry and Chemical Engineering, Inha University , Incheon 22212, Korea
| | - Jeongho Kim
- Department of Chemistry and Chemical Engineering, Inha University , Incheon 22212, Korea
| | - Wan In Lee
- Department of Chemistry and Chemical Engineering, Inha University , Incheon 22212, Korea
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12
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Lechner M, Güttel R, Streb C. Challenges in polyoxometalate-mediated aerobic oxidation catalysis: catalyst development meets reactor design. Dalton Trans 2016; 45:16716-16726. [DOI: 10.1039/c6dt03051c] [Citation(s) in RCA: 63] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Current challenges and future directions i of polyoxometalates for selective aerobic oxidation catalysis is discussed with an emphasis on catalyst and reactor design.
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Affiliation(s)
- Manuel Lechner
- Institute of Inorganic Chemistry I
- Ulm University
- 89081 Ulm
- Germany
- Institute of Chemical Engineering
| | - Robert Güttel
- Institute of Chemical Engineering
- Ulm University
- 89081 Ulm
- Germany
| | - Carsten Streb
- Institute of Inorganic Chemistry I
- Ulm University
- 89081 Ulm
- Germany
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13
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Jangir R, Antony R, Murugavel R. New sterically encumbered arylimido hexamolybdates for organic oxidation reactions. NEW J CHEM 2016. [DOI: 10.1039/c5nj02330k] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Surface modification of the parent hexamolybdate by aryl amines results in useful catalysts for the oxidation of cyclohexene to cyclohexene epoxide and benzyl alcohol to benzaldehyde and benzoic acid.
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Affiliation(s)
- Ritambhara Jangir
- Department of Chemistry
- Indian Institute of Technology Bombay
- Powai
- India
| | - Rajendran Antony
- Department of Chemistry
- Indian Institute of Technology Bombay
- Powai
- India
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14
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Luo HQ, Zhang P, Yang YX, Gong Y, Lin JH. Two polymolybdate-based complexes and their graphene composites with visible-light photo-responses. RSC Adv 2016. [DOI: 10.1039/c6ra19805h] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023] Open
Abstract
Two polymolybdate-based complexes with different band gaps show different visible-light photo-responses, and their graphene composite materials possess improved electrocatalytic activities for HER.
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Affiliation(s)
- Hai-Qiang Luo
- Department of Applied Chemistry
- College of Chemistry and Chemical Engineering
- Chongqing University
- Chongqing 400030
- P. R. China
| | - Pan Zhang
- Department of Applied Chemistry
- College of Chemistry and Chemical Engineering
- Chongqing University
- Chongqing 400030
- P. R. China
| | - Yong-Xi Yang
- Department of Applied Chemistry
- College of Chemistry and Chemical Engineering
- Chongqing University
- Chongqing 400030
- P. R. China
| | - Yun Gong
- Department of Applied Chemistry
- College of Chemistry and Chemical Engineering
- Chongqing University
- Chongqing 400030
- P. R. China
| | - Jian-Hua Lin
- Department of Applied Chemistry
- College of Chemistry and Chemical Engineering
- Chongqing University
- Chongqing 400030
- P. R. China
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15
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Karimian D, Yadollahi B, Zendehdel M, Mirkhani V. Efficient dye-sensitized solar cell with a pure thin film of a hybrid polyoxometalate covalently attached organic dye as a working electrode in a cobalt redox mediator system. RSC Adv 2015. [DOI: 10.1039/c5ra09104g] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A Keggin-type hybrid polyoxometalate is used as a pure semiconductor thin film in the working electrode of a dye-sensitized solar cell fabricated with a D35 organic dye and a cobalt redox mediator system, giving a maximum IPCE of about 91% .
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Affiliation(s)
- Davud Karimian
- Department of Chemistry
- University of Isfahan
- Isfahan 81746-73441
- Iran
| | - Bahram Yadollahi
- Department of Chemistry
- University of Isfahan
- Isfahan 81746-73441
- Iran
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