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Su S, Li X, Liu Z, Ding W, Cao Y, Yang Y, Su Q, Luo M. Microchemical environmental regulation of POMs@MIL-101(Cr) promote photocatalytic nitrogen to ammonia. J Colloid Interface Sci 2023; 646:547-554. [PMID: 37210902 DOI: 10.1016/j.jcis.2023.05.069] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2023] [Revised: 04/28/2023] [Accepted: 05/10/2023] [Indexed: 05/23/2023]
Abstract
The polyoxometalates (POMs) have been shown to be highly effective as reactive sites for photocatalytic nitrogen fixation reactions. However, the effect of POMs regulation on catalytic performance has not been reported yet. Herein, a series of composites (SiW9M3@MIL-101(Cr) (M = Fe, Co, V, Mo) and D-SiW9Mo3@MIL-101(Cr), D, Disordered) were obtained by regulating transition metal compositions and arrangement in the POMs. The ammonia production rate of SiW9Mo3@MIL-101(Cr) is much higher than that of other composites, reaching 185.67 μmol·h-1·g-1cat in N2 without sacrificial agents. The structural characterization of composites reveals that the increase of the electron cloud density of W atom in composites is the key to improve the photocatalytic performance. In this paper, the microchemical environment of POMs was regulated by transition metal doping method, thereby promoting the efficiency of photocatalytic ammonia synthesis for the composites, which provides new insights into the design of POM-based photocatalysts with high catalytic activity.
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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, 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.
| | - Zhenyu 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, China
| | - Wenming Ding
- 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
| | - Yue Cao
- 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
| | - Yang Yang
- 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
| | - Qin 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, 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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Indelicato S, Bongiorno D, Ceraulo L. Recent Approaches for Chemical Speciation and Analysis by Electrospray Ionization (ESI) Mass Spectrometry. Front Chem 2021; 8:625945. [PMID: 33553108 PMCID: PMC7855954 DOI: 10.3389/fchem.2020.625945] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2020] [Accepted: 11/30/2020] [Indexed: 11/25/2022] Open
Abstract
In recent years, the chemical speciation of several species has been increasingly monitored and investigated, employing electrospray ionization mass spectrometry (ESI-MS). This soft ionization technique gently desolvates weak metal–ligand complexes, taking them in the high vacuum sectors of mass spectrometric instrumentation. It is, thus, possible to collect information on their structure, energetics, and fragmentation pathways. For this reason, this technique is frequently chosen in a synergistic approach to investigate competitive ligand exchange-adsorption otherwise analyzed by cathodic stripping voltammetry (CLE-ACSV). ESI-MS analyses require a careful experimental design as measurement may face instrumental artifacts such as ESI adduct formation, fragmentation, and sometimes reduction reactions. Furthermore, ESI source differences of ionization efficiencies among the detected species can be misleading. In this mini-review are collected and critically reported the most recent approaches adopted to mitigate or eliminate these limitations and to show the potential of this analytical technique.
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Affiliation(s)
- Serena Indelicato
- Dipartimento di Scienze e Tecnologie Biologiche Chimiche e Farmaceutiche (STEBICEF), Università degli studi di Palermo, Palermo, Italy
| | - David Bongiorno
- Dipartimento di Scienze e Tecnologie Biologiche Chimiche e Farmaceutiche (STEBICEF), Università degli studi di Palermo, Palermo, Italy
| | - Leopoldo Ceraulo
- Dipartimento di Scienze e Tecnologie Biologiche Chimiche e Farmaceutiche (STEBICEF), Università degli studi di Palermo, Palermo, Italy
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Cheng M, Xiao Z, Yu L, Lin X, Wang Y, Wu P. Direct Syntheses of Nanocages and Frameworks Based on Anderson-Type Polyoxometalates via One-Pot Reactions. Inorg Chem 2019; 58:11988-11992. [PMID: 31478371 DOI: 10.1021/acs.inorgchem.9b01313] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
A new one-step synthetic protocol of tris-functionalized Anderson polyoxomolybdates directly from heptamolybdate salts was presented in this Communication. Through this new method, we obtained the first example of Anderson-type polyoxomolybdates with vanadium as the heteroatom. Moreover, the crystals of the products exhibited interesting nanocage or framework extended structures, which were greatly affected by the trialkoxyl ligands as well as the counterions.
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Affiliation(s)
- Min Cheng
- Institute of POM-Based Materials, School of Materials and Chemical Engineering , Hubei University of Technology , Wuhan 430068 , China
| | - Zicheng Xiao
- Institute of POM-Based Materials, School of Materials and Chemical Engineering , Hubei University of Technology , Wuhan 430068 , China
| | - Longbo Yu
- Institute of POM-Based Materials, School of Materials and Chemical Engineering , Hubei University of Technology , Wuhan 430068 , China
| | - Xinjun Lin
- Institute of POM-Based Materials, School of Materials and Chemical Engineering , Hubei University of Technology , Wuhan 430068 , China
| | - Yu Wang
- Institute of POM-Based Materials, School of Materials and Chemical Engineering , Hubei University of Technology , Wuhan 430068 , China
| | - Pingfan Wu
- Institute of POM-Based Materials, School of Materials and Chemical Engineering , Hubei University of Technology , Wuhan 430068 , China
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Wen J, Ning P, Cao H, Zhao H, Sun Z, Zhang Y. Novel method for characterization of aqueous vanadium species: A perspective for the transition metal chemical speciation studies. JOURNAL OF HAZARDOUS MATERIALS 2019; 364:91-99. [PMID: 30342292 DOI: 10.1016/j.jhazmat.2018.09.069] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/07/2018] [Revised: 08/31/2018] [Accepted: 09/26/2018] [Indexed: 05/26/2023]
Abstract
Identification the polymerization nature of vanadium bearing solution is difficult, yet it is of great environmental concern due to the possible carcinogenic effects as well as high-value sustainable necessities. Thus, seeking for simple and efficient characterization methods of tracking vanadium species is in urgent demand. In this work, high-resolution electrospray ionization time-of-flight mass spectrometry (ESI-TOF-MS) coupled with thermodynamic calculations was employed to measure vanadium-containing samples. Evolutions of four characteristic vanadium species, H2VO4- (0-1%), V2 species (0-1%), V4 species (1-20%), and V10 species (60-95%), were comprehensively studied from acidic to neutral conditions, based on which thermodynamic model and vanadium phase diagram were established to visualize transformation pathways. More than 30 types of aqueous vanadium species could be semi-quantitatively detected by employing this method with less than 5% relative error, and the corresponding existing forms and concentration of these vanadium species could be well predicted. The vanadium species identified in MS results were confirmed by NMR. This method can be widely used for the understanding of vanadium speciation in practical examples, especially involving V(V), Cr(VI) ions or organic complexes.
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Affiliation(s)
- Jiawei Wen
- Institute of Process Engineering, Chinese Academy of Science, Beijing, 100190, PR China; School of Chemical Engineering & Technology, Tianjin University, Tianjin, 300072, PR China; Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin, 300072, PR China
| | - Pengge Ning
- Institute of Process Engineering, Chinese Academy of Science, Beijing, 100190, PR China.
| | - Hongbin Cao
- Institute of Process Engineering, Chinese Academy of Science, Beijing, 100190, PR China; School of Chemical Engineering & Technology, Tianjin University, Tianjin, 300072, PR China; Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin, 300072, PR China
| | - He Zhao
- Institute of Process Engineering, Chinese Academy of Science, Beijing, 100190, PR China
| | - Zhi Sun
- Institute of Process Engineering, Chinese Academy of Science, Beijing, 100190, PR China
| | - Yi Zhang
- Institute of Process Engineering, Chinese Academy of Science, Beijing, 100190, PR China; School of Chemical Engineering & Technology, Tianjin University, Tianjin, 300072, PR China; Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin, 300072, PR China
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Dorhout PK, Ford NB, Raymond CC. Understanding the polychalcogenides as building blocks to solid state materials: Speciation of polychalcogenides in solutions. Coord Chem Rev 2017. [DOI: 10.1016/j.ccr.2017.10.017] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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6
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Liu C, Cao J, Wang QQ, Zang JC, Ci CG. Effect of vanadium valence state on the solution chemistry and the stability of vanadium substituted polyoxometalates. RSC Adv 2016. [DOI: 10.1039/c6ra24432g] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
ESI-MS combined with DFT calculation revealed that the vanadium valence state and the vanadium substitution degrees can substantially affect the stabilities of vanadium-substituted POMs.
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Affiliation(s)
- Chang Liu
- Key Laboratory of Cluster Science
- Ministry of Education of China
- Beijing Key Laboratory of Photoelectronic/Electrophotonic Conversion Materials
- School of Chemistry and Chemical Engineering
- Beijing Institute of Technology
| | - Jie Cao
- Key Laboratory of Cluster Science
- Ministry of Education of China
- Beijing Key Laboratory of Photoelectronic/Electrophotonic Conversion Materials
- School of Chemistry and Chemical Engineering
- Beijing Institute of Technology
| | - Qian-Qian Wang
- Key Laboratory of Cluster Science
- Ministry of Education of China
- Beijing Key Laboratory of Photoelectronic/Electrophotonic Conversion Materials
- School of Chemistry and Chemical Engineering
- Beijing Institute of Technology
| | - Jie-Chao Zang
- Department of Chemistry and Chemical Engineering
- Qiannan Normal University for Nationalities
- Duyun 558000
- P. R. China
| | - Cheng-Gang Ci
- Department of Chemistry and Chemical Engineering
- Qiannan Normal University for Nationalities
- Duyun 558000
- P. R. China
- Department of Chemistry
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