1
|
Gaikwad RP, Warkad IR, Chaudhari DS, Jiang S, Miller JT, Pham HN, Datye A, Gawande MB. Harnessing photocatalytic activity of mesoporous graphitic carbon nitride decorated by copper single-atom catalysts for oxidative dehydrogenation of N-heterocycles. J Colloid Interface Sci 2024; 676:485-495. [PMID: 39047376 DOI: 10.1016/j.jcis.2024.07.067] [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: 05/14/2024] [Revised: 07/03/2024] [Accepted: 07/07/2024] [Indexed: 07/27/2024]
Abstract
This work describes the application of Cu single-atom catalysts (SACs) for photocatalytic oxidative dehydrogenation of N-heterocyclic amines to the respective N-heteroaromatics through environmentally benign and sustainable pathways. The mesoporous graphitic carbon nitride (mpg-C3N4), prepared by the one-step pyrolysis method, possesses a lightweight material with a high surface area (95 m2 g-1) and an average pore diameter (3.6 nm). A simple microwave-assisted preparation method was employed to decorate Cu single-atom over mpg-C3N4 support. The Cu single-atom decorated on mpg-C3N4 support (Cu@mpg-C3N4) is characterized by various characterization techniques, including XRD, UV-visible spectrophotometry, HRTEM, HAADF-STEM with elemental mapping, AC-STEM, ICP-OES, XANES, EXAFS, and BET surface area. These characterization studies confirmed that the Cu@mpg-C3N4 catalyst exhibited high surface area, mesoporous nature, medium band gap, and low metal loading. The as-synthesized and well-characterized Cu@mpg-C3N4 single-atom photocatalyst is then evaluated for its efficacy in converting N-heterocycles into corresponding N-heteroaromatic compounds with excellent conversion and selectivity (>99 %). This transformation is achieved using water as a green solvent and a 30 W white light as a visible light source, demonstrating the catalyst's potential for sustainable and environmentally benign reactions.
Collapse
Affiliation(s)
- Rahul P Gaikwad
- Department of Industrial and Engineering Chemistry, Institute of Chemical Technology, Jalna, Maharashtra 431203, India
| | - Indrajeet R Warkad
- Department of Industrial and Engineering Chemistry, Institute of Chemical Technology, Jalna, Maharashtra 431203, India
| | - Dinesh S Chaudhari
- Department of Industrial and Engineering Chemistry, Institute of Chemical Technology, Jalna, Maharashtra 431203, India
| | - Shan Jiang
- Davidson School of Chemical Engineering, Purdue University, 480 Stadium Mall Drive, IN 47906, United States
| | - Jeffrey T Miller
- Davidson School of Chemical Engineering, Purdue University, 480 Stadium Mall Drive, IN 47906, United States
| | - Hien N Pham
- Department of Chemical Biological Engineering and Center for Micro-Engineered Materials, University of New Mexico, Albuquerque, NM 87131, United States
| | - Abhaya Datye
- Department of Chemical Biological Engineering and Center for Micro-Engineered Materials, University of New Mexico, Albuquerque, NM 87131, United States
| | - Manoj B Gawande
- Department of Industrial and Engineering Chemistry, Institute of Chemical Technology, Jalna, Maharashtra 431203, India; Nanotechnology Centre, Centre for Energy and Environmental Technologies, VˇSB-Technical University of Ostrava, 17. Listopadu 2172/15, 708 00 Ostrava-Poruba, Czech Republic.
| |
Collapse
|
2
|
Parasuraman B, Kandasamy B, Vasudevan V, Thangavelu P. Enhanced dye degradation performance enabled by swift electron mediator decorated WO 3/g-C 3N 4/V 2O 5 hybrid nanomaterials. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2024; 31:46591-46601. [PMID: 37314553 DOI: 10.1007/s11356-023-28200-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/11/2023] [Accepted: 06/06/2023] [Indexed: 06/15/2023]
Abstract
Organic pollutants such as dyes and pharmaceutical drugs have become a significant environmental problem due to their unrestricted discharge, especially in water bodies. As a result, an economically viable and environmentally friendly approach to their degradation in water bodies is required and the incorporation of metal tungstate with single metal oxide has attracted attention due to its potential ability towards the photocatalytic degradation of pollutants. The work demonstrates a WO3/g-C3N4/V2O5 nanocomposite synthesized using a facile route wet impregnation method. The results revealed that WO3/g-C3N4/V2O5 nanocomposites are suitable, mainly for their better surface properties, enhanced visible-light absorption, and preferred band positions. Besides that, the degradation of methylene blue (MB) dye is carried out and demonstrated that the complete degradation occurs over 120 min using 10 mg L-1 of WO3/g-C3N4/V2O5 nanocomposite under UV-visible-light irradiation. The scavenger experimental result implies that the photogenerated free electrons and superoxide radials are important role in MB dye degradation. In addition, a possible mechanism is proposed for the photocatalytic activity of WO3/g-C3N4/V2O5 nanocomposite. Moreover, the stability analysis demonstrated that the WO3/g-C3N4/V2O5 nanocomposite can be recycled multiple times.
Collapse
Affiliation(s)
- Balaji Parasuraman
- Smart Materials Laboratory, Department of Physics, Periyar University, Salem, 636011, Tamil Nadu, India
| | | | - Vasanthakumar Vasudevan
- Xiamen Key Laboratory of Municipal and Industrial Solid Waste Utilization and Pollution Control, College of Civil Engineering, Huaqiao University, Xiamen, Fujian, 361021, People's Republic of China
| | - Pazhanivel Thangavelu
- Smart Materials Laboratory, Department of Physics, Periyar University, Salem, 636011, Tamil Nadu, India.
| |
Collapse
|
3
|
Lapa HM, Martins LMDRS. Toluene Oxidation: CO 2 vs Benzaldehyde: Current Status and Future Perspectives. ACS OMEGA 2024; 9:26780-26804. [PMID: 38947821 PMCID: PMC11209706 DOI: 10.1021/acsomega.4c01023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/31/2024] [Revised: 05/21/2024] [Accepted: 05/24/2024] [Indexed: 07/02/2024]
Abstract
Toluene is a common and significant volatile organic compound (VOC). Although it finds extensive application in various industrial processes (chemical manufacturing, paint and adhesive production, and as a solvent), it creates a huge environmental impact when emitted freely into the atmosphere. Two solutions were found to mitigate the emission of this pollutant: the total oxidation to CO2 and H2O and the selective oxidation into benzaldehyde. This review discusses the two main alternatives for tackling this problem: converting the toluene into carbon dioxide by total oxidation or into benzaldehyde by selective oxidation. It presents new catalytic advances, new trends, and the advantages and disadvantages of both methods.
Collapse
Affiliation(s)
- Hugo M. Lapa
- Centro
de Química Estrutural, Institute of Molecular Sciences, Instituto
Superior Técnico, Universidade de
Lisboa, Lisboa 1049-001, Portugal
- Departamento
de Engenharia Química, Instituto Superior Técnico, Universidade de Lisboa, Lisboa 1049-001, Portugal
- Departamento
de Engenharia Química, Instituto Superior de Engenharia de
Lisboa, Instituto Politécnico de
Lisboa, 1059-007 Lisboa, Portugal
| | - Luísa M. D. R. S. Martins
- Centro
de Química Estrutural, Institute of Molecular Sciences, Instituto
Superior Técnico, Universidade de
Lisboa, Lisboa 1049-001, Portugal
- Departamento
de Engenharia Química, Instituto Superior Técnico, Universidade de Lisboa, Lisboa 1049-001, Portugal
| |
Collapse
|
4
|
Kumar P, Singh G, Guan X, Lee J, Bahadur R, Ramadass K, Kumar P, Kibria MG, Vidyasagar D, Yi J, Vinu A. Multifunctional carbon nitride nanoarchitectures for catalysis. Chem Soc Rev 2023; 52:7602-7664. [PMID: 37830178 DOI: 10.1039/d3cs00213f] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2023]
Abstract
Catalysis is at the heart of modern-day chemical and pharmaceutical industries, and there is an urgent demand to develop metal-free, high surface area, and efficient catalysts in a scalable, reproducible and economic manner. Amongst the ever-expanding two-dimensional materials family, carbon nitride (CN) has emerged as the most researched material for catalytic applications due to its unique molecular structure with tunable visible range band gap, surface defects, basic sites, and nitrogen functionalities. These properties also endow it with anchoring capability with a large number of catalytically active sites and provide opportunities for doping, hybridization, sensitization, etc. To make considerable progress in the use of CN as a highly effective catalyst for various applications, it is critical to have an in-depth understanding of its synthesis, structure and surface sites. The present review provides an overview of the recent advances in synthetic approaches of CN, its physicochemical properties, and band gap engineering, with a focus on its exclusive usage in a variety of catalytic reactions, including hydrogen evolution reactions, overall water splitting, water oxidation, CO2 reduction, nitrogen reduction reactions, pollutant degradation, and organocatalysis. While the structural design and band gap engineering of catalysts are elaborated, the surface chemistry is dealt with in detail to demonstrate efficient catalytic performances. Burning challenges in catalytic design and future outlook are elucidated.
Collapse
Affiliation(s)
- Prashant Kumar
- Global Innovative Center for Advanced Nanomaterials, College of Engineering, Science and Environment (CESE), The University of Newcastle, University Drive, Callaghan, 2308, NSW, Australia.
| | - Gurwinder Singh
- Global Innovative Center for Advanced Nanomaterials, College of Engineering, Science and Environment (CESE), The University of Newcastle, University Drive, Callaghan, 2308, NSW, Australia.
| | - Xinwei Guan
- Global Innovative Center for Advanced Nanomaterials, College of Engineering, Science and Environment (CESE), The University of Newcastle, University Drive, Callaghan, 2308, NSW, Australia.
| | - Jangmee Lee
- Global Innovative Center for Advanced Nanomaterials, College of Engineering, Science and Environment (CESE), The University of Newcastle, University Drive, Callaghan, 2308, NSW, Australia.
| | - Rohan Bahadur
- Global Innovative Center for Advanced Nanomaterials, College of Engineering, Science and Environment (CESE), The University of Newcastle, University Drive, Callaghan, 2308, NSW, Australia.
| | - Kavitha Ramadass
- Global Innovative Center for Advanced Nanomaterials, College of Engineering, Science and Environment (CESE), The University of Newcastle, University Drive, Callaghan, 2308, NSW, Australia.
| | - Pawan Kumar
- Department of Chemical and Petroleum Engineering, University of Calgary, 2500 University Drive NW, Calgary, Alberta T2N 1N4, Canada
| | - Md Golam Kibria
- Department of Chemical and Petroleum Engineering, University of Calgary, 2500 University Drive NW, Calgary, Alberta T2N 1N4, Canada
| | - Devthade Vidyasagar
- School of Material Science and Engineering, Kyungpook National University, Daegu, 41566, Republic of Korea
| | - Jiabao Yi
- Global Innovative Center for Advanced Nanomaterials, College of Engineering, Science and Environment (CESE), The University of Newcastle, University Drive, Callaghan, 2308, NSW, Australia.
| | - Ajayan Vinu
- Global Innovative Center for Advanced Nanomaterials, College of Engineering, Science and Environment (CESE), The University of Newcastle, University Drive, Callaghan, 2308, NSW, Australia.
| |
Collapse
|
5
|
Ma C, Yang C, Zhuo H, Chen C, Lu K, Wang F, Shi Z, Xiao H, Song M, Jiang G. Tailored Cl - Ligation on Supported Pt Catalysts for Selective Primary C-H Bond Oxidation. J Am Chem Soc 2023; 145:10890-10898. [PMID: 37155826 DOI: 10.1021/jacs.3c03257] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/10/2023]
Abstract
It is challenging to achieve high selectivity over Pt-metal-oxide catalysts widely used in many selective oxidation reactions because Pt is prone to over-oxidize substrates. Herein, our sound strategy for enhancing the selectivity is to saturate the under-coordinated single Pt atoms with Cl- ligands. In this system, the weak electronic metal-support interactions between Pt atoms and reduced TiO2 cause electron extraction from Pt to Cl- ligands, resulting in strong Pt-Cl bonds. Therefore, the two-coordinate single Pt atoms adopt a four-coordinate configuration and thus inactivated, thereby inhibiting the over-oxidation of toluene over Pt sites. The selectivity for the primary C-H bond oxidation products of toluene was increased from 50.1 to 100%. Meanwhile, the abundant active Ti3+ sites were stabilized in reduced TiO2 by Pt atoms, leading to a rising yield of the primary C-H oxidation products of 249.8 mmol gcat-1. The reported strategy holds great promise for selective oxidation with enhanced selectivity.
Collapse
Affiliation(s)
- Chunyan Ma
- Key Laboratory of Environmental Nanotechnology and Health Effects, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Chenggong Yang
- Key Laboratory of Environmental Nanotechnology and Health Effects, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Hongying Zhuo
- Department of Chemistry, Tsinghua University, Beijing 100084, China
| | - Cheng Chen
- Key Laboratory of Environmental Nanotechnology and Health Effects, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Ke Lu
- Department of Chemistry, Tsinghua University, Beijing 100084, China
| | - Fengbang Wang
- Key Laboratory of Environmental Nanotechnology and Health Effects, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Zhifu Shi
- Chinainstru & Quantumtech (Hefei) Co., Ltd, Hefei 230031, China
| | - Hai Xiao
- Department of Chemistry, Tsinghua University, Beijing 100084, China
| | - Maoyong Song
- Key Laboratory of Environmental Nanotechnology and Health Effects, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Guibin Jiang
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| |
Collapse
|
6
|
Ruban SM, Ramadass K, Singh G, Talapaneni SN, Kamalakar G, Gadipelly CR, Mannepalli LK, Sugi Y, Vinu A. Organocatalysis with carbon nitrides. SCIENCE AND TECHNOLOGY OF ADVANCED MATERIALS 2023; 24:2188879. [PMID: 37007670 PMCID: PMC10054243 DOI: 10.1080/14686996.2023.2188879] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/15/2023] [Revised: 03/02/2023] [Accepted: 03/05/2023] [Indexed: 06/19/2023]
Abstract
Carbon nitrides, a distinguished class of metal-free catalytic materials, have presented a good potential for chemical transformations and are expected to become prominent materials for organocatalysis. This is largely possible due to their low cost, exceptional thermal and chemical stability, non-toxicity, ease of functionalization, porosity development, etc. Especially, the carbon nitrides with increased porosity and nitrogen contents are more versatile than their bulk counterparts for catalysis. These N-rich carbon nitrides are discussed in the earlier parts of the review. Later, the review highlights the role of such carbon nitride materials for the various organic catalytic reactions including Knoevenagel condensation, oxidation, hydrogenation, esterification, transesterification, cycloaddition, and hydrolysis. The recently emerging concepts in carbon nitride-based organocatalysis have been given special attention. In each of the sections, the structure-property relationship of the materials was discussed and related to their catalysis action. Relevant comparisons with other catalytic materials are also discussed to realize their real potential value. The perspective, challenges, and future directions are also discussed. The overall objective of this review is to provide up-to-date information on new developments in carbon nitride-based organic catalysis reactions that could see them rising as prominent catalytic materials in the future.
Collapse
Affiliation(s)
- Sujanya Maria Ruban
- Global Innovative Centre for Advanced Nanomaterials (GICAN), College of Engineering, Science and Environment (CESE), School of Engineering, The University of Newcastle, Callaghan, Australia
| | - Kavitha Ramadass
- Global Innovative Centre for Advanced Nanomaterials (GICAN), College of Engineering, Science and Environment (CESE), School of Engineering, The University of Newcastle, Callaghan, Australia
| | - Gurwinder Singh
- Global Innovative Centre for Advanced Nanomaterials (GICAN), College of Engineering, Science and Environment (CESE), School of Engineering, The University of Newcastle, Callaghan, Australia
| | | | - Gunda Kamalakar
- Department of Chemical Engineering, University of Waterloo, Waterloo, Ontario, Canada
| | | | | | - Yoshihiro Sugi
- Global Innovative Centre for Advanced Nanomaterials (GICAN), College of Engineering, Science and Environment (CESE), School of Engineering, The University of Newcastle, Callaghan, Australia
- Faculty of Engineering, Gifu University, Gifu, Japan
| | - Ajayan Vinu
- Global Innovative Centre for Advanced Nanomaterials (GICAN), College of Engineering, Science and Environment (CESE), School of Engineering, The University of Newcastle, Callaghan, Australia
| |
Collapse
|
7
|
Zhi SQ, Zhang JY, Wu SH, Zhu WS, Shan YD, Liu Y, Han X. Oxidative Desulfurization of Benzothiophene by Persulfate and Cu-Loaded g-C 3 N 4 via the Polymerization Pathway. Ind Eng Chem Res 2023. [DOI: 10.1021/acs.iecr.2c04484] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/01/2023]
Affiliation(s)
- Shao-Qi Zhi
- Tianjin Key Laboratory of Chemical Process Safety and Equipment Technology, School of Chemical Engineering and Technology, Tianjin 300350, P. R. China
| | - Jun-Yuan Zhang
- Tianjin Key Laboratory of Chemical Process Safety and Equipment Technology, School of Chemical Engineering and Technology, Tianjin 300350, P. R. China
| | - Song-Hai Wu
- Tianjin Key Laboratory of Chemical Process Safety and Equipment Technology, School of Chemical Engineering and Technology, Tianjin 300350, P. R. China
| | - Wen-Shuang Zhu
- School of Environmental Science and Engineering, Tianjin University, Tianjin 300350, P. R. China
| | - Yu-Dong Shan
- Tianjin Key Laboratory of Chemical Process Safety and Equipment Technology, School of Chemical Engineering and Technology, Tianjin 300350, P. R. China
| | - Yong Liu
- School of Chemistry and Chemical Engineering, Tianjin University of Technology, Tianjin 300384, P. R. China
| | - Xu Han
- Tianjin Key Laboratory of Chemical Process Safety and Equipment Technology, School of Chemical Engineering and Technology, Tianjin 300350, P. R. China
| |
Collapse
|
8
|
Alsaiari RA. Supported ruthenium catalyst as an effective catalyst for selective oxidation of toluene. J INDIAN CHEM SOC 2022. [DOI: 10.1016/j.jics.2022.100593] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
|
9
|
Hu WJ, Zhou XT, Sun MZ, Ji HB. Efficient catalytic oxidation of primary benzylic C H bonds with molecular oxygen catalyzed by cobalt porphyrins and N-hydroxyphthalimide (NHPI) in supercritical carbon dioxide. CATAL COMMUN 2021. [DOI: 10.1016/j.catcom.2021.106353] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022] Open
|
10
|
Preparation and characterization of graphitic carbon nitride-supported L-arginine as a highly efficient and recyclable catalyst for the one-pot synthesis of condensation reactions. Sci Rep 2021; 11:19792. [PMID: 34611176 PMCID: PMC8492782 DOI: 10.1038/s41598-021-97360-x] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2021] [Accepted: 08/25/2021] [Indexed: 12/20/2022] Open
Abstract
In this work, graphitic carbon nitride-supported l-arginine (g-C3N4@l-arginine) nanocatalyst was synthesized and evaluated using FT-IR, EDX, XRD, TGA, and FESEM analyses. The performance of the prepared nanocatalyst was examined in the synthesis of 1,4-dihydropyridine, 4H-chromene, and 2,3-dihydro quinazoline derivatives. The novel g-C3N4@l-arginine nanocatalyst showed high thermal stability, easy separation from reaction media, the capability to be used in various multicomponent reactions, and acceptable reusability.
Collapse
|
11
|
Zhang W, Xu D, Wang F, Chen M. Element-doped graphitic carbon nitride: confirmation of doped elements and applications. NANOSCALE ADVANCES 2021; 3:4370-4387. [PMID: 36133458 PMCID: PMC9417723 DOI: 10.1039/d1na00264c] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/09/2021] [Accepted: 06/17/2021] [Indexed: 05/11/2023]
Abstract
Doping is widely reported as an efficient strategy to enhance the performance of graphitic carbon nitride (g-CN). In the study of element-doped g-CN, the characterization of doped elements is an indispensable requirement, as well as a huge challenge. In this review, we summarize some useful characterization methods which can confirm the existence and chemical states of doped elements. The advantages and shortcomings of these characterization methods are discussed in detail. Various applications of element-doped g-CN and the function of doped elements are also introduced. Overall, this review article aims to provide helpful information for the research of element-doped g-CN.
Collapse
Affiliation(s)
- Wenjun Zhang
- Department of Materials Science, Fudan University Shanghai 200433 PR China
| | - Datong Xu
- Department of Materials Science, Fudan University Shanghai 200433 PR China
| | - Fengjue Wang
- Department of Materials Science, Fudan University Shanghai 200433 PR China
| | - Meng Chen
- Department of Materials Science, Fudan University Shanghai 200433 PR China
| |
Collapse
|
12
|
Bai J, Huang J, Jiang Q, Li Y, Wang H, Yu H, Zhang Q, Cao Y, Peng F. Radical Propagation Facilitating Aerobic Oxidation of Substituted Aromatics Promoted by Tert‐Butyl Hydroperoxide. ChemistrySelect 2021. [DOI: 10.1002/slct.202101805] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
- Jiatong Bai
- School of Chemistry and Chemical Engineering Guangdong Provincial Key Lab of Green Chemical Product Technology South China University of Technology Guangzhou 510640 China
| | - Jiangnan Huang
- School of Chemistry and Chemical Engineering Guangdong Provincial Key Lab of Green Chemical Product Technology South China University of Technology Guangzhou 510640 China
| | - Qi Jiang
- School of Chemistry and Chemical Engineering Guangdong Provincial Key Lab of Green Chemical Product Technology South China University of Technology Guangzhou 510640 China
| | - Yuhang Li
- School of Chemistry Sun Yat-sen University Guangzhou 510275 China
| | - Hongjuan Wang
- School of Chemistry and Chemical Engineering Guangdong Provincial Key Lab of Green Chemical Product Technology South China University of Technology Guangzhou 510640 China
| | - Hao Yu
- School of Chemistry and Chemical Engineering Guangdong Provincial Key Lab of Green Chemical Product Technology South China University of Technology Guangzhou 510640 China
| | - Qiao Zhang
- Guangzhou Key Laboratory for New Energy and Green Catalysis School of Chemistry and Chemical Engineering Guangzhou University Guangzhou 510006 China
| | - Yonghai Cao
- School of Chemistry and Chemical Engineering Guangdong Provincial Key Lab of Green Chemical Product Technology South China University of Technology Guangzhou 510640 China
| | - Feng Peng
- Guangzhou Key Laboratory for New Energy and Green Catalysis School of Chemistry and Chemical Engineering Guangzhou University Guangzhou 510006 China
| |
Collapse
|
13
|
Lin L, Mei Q, Han X, Parker SF, Yang S. Investigations of Hydrocarbon Species on Solid Catalysts by Inelastic Neutron Scattering. Top Catal 2020. [DOI: 10.1007/s11244-020-01389-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
AbstractThe status of surface species on solid catalysts during heterogeneous catalysis is often mysterious. Investigations of these surface species are crucial to deconvolute the reaction network and design more efficient catalysts. Vibrational spectroscopy is a powerful technique to study the interactions between surface species and the catalysts and infrared (IR) and Raman spectroscopies have been widely applied to study reaction mechanisms in heterogeneous catalysis. However, IR/Raman spectra are difficult to model computationally and important vibrational modes may be IR-, Raman- (or both) inactive due to restrictions by optical selection rules. Inelastic neutron scattering (INS) is another form of vibrational spectroscopy and relies on the scattering of neutrons by the atomic nucleus. A consequence of this is that INS is not subject to any optical selection rules and all vibrations are measurable in principle. INS spectroscopy has been used to investigate surface species on catalysts in a wide range of heterogeneous catalytic reactions. In this mini-review, we focus on applications of INS in two important fields: petrochemical reactions and C1 chemistry. We introduce the basic principles of the INS technique, followed by a discussion of its application in investigating two key catalytic systems: (i) the behaviour of hydrocarbons on metal-oxide and zeolite catalysts and (ii) the formation of hydrocarbonaceous species on methane reforming and Fischer–Tropsch catalysts. The power of INS in studying these important catalytic systems is demonstrated.
Collapse
|
14
|
Selective Liquid-Phase Oxidation of Toluene with Molecular Oxygen Catalyzed by Mn3O4 Nanoparticles Immobilized on CNTs under Solvent-Free Conditions. Catalysts 2020. [DOI: 10.3390/catal10060623] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
The catalytic performance of Mn3O4 supported on carbon nanotubes (CNTs) in the liquid-phase oxidation of toluene to benzyl alcohol and benzaldehyde was studied. The supported catalysts were characterized by X-ray diffraction (XRD), Raman spectroscopy, scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS), N2 adsorption–desorption isotherms and ICP-MS. The results demonstrate that Mn3O4 nanoparticles loaded on CNTs performed better compared with pristine Mn3O4 or CNTs. The main reason for the increased catalytic activity is the dispersion and loading of Mn3O4 in CNTs. By optimizing the reaction temperature, reaction time, catalyst quality, oxygen flow rate and initiator dosage, the optimum reaction conditions were obtained. Using tert-butyl hydroperoxide (TBHP) as the initiator and oxygen as the oxidant, the toluene conversion rate was as high as 24.63%, and benzyl alcohol and benzaldehyde selectivity was 90.49%. The good stability of the catalyst was confirmed by repeating the experiment for four cycles and observing no significant changes in its performance.
Collapse
|
15
|
|
16
|
Surface-Doped Graphitic Carbon Nitride Catalyzed Photooxidation of Olefins and Dienes: Chemical Evidence for Electron Transfer and Singlet Oxygen Mechanisms. Catalysts 2019. [DOI: 10.3390/catal9080639] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
A new photocatalytic reactivity of carbon-nanodot-doped graphitic carbon nitride (CD-C3N4) with alkenes and dienes, has been disclosed. We have shown that CD-C3N4 photosensitizes the oxidation of unsaturated substrates in a variety of solvents according to two competing mechanisms: the energy transfer via singlet oxygen (1O2) and/or the electron transfer via superoxide (O·−2). The singlet oxygen, derived by the CD-C3N4 photosensitized process, reacts with alkenes to form allylic hydroperoxides (ene products) whereas with dienes, endoperoxides. When the electron transfer mechanism operates, cleavage products are formed, derived from the corresponding dioxetanes. Which of the two mechanisms will prevail depends on solvent polarity and the particular substrate. The photocatalyst remains stable under the photooxidation conditions, unlike the most conventional photosensitizers, while the heterogeneous nature of CD-C3N4 overcomes usual solubility problems.
Collapse
|
17
|
Boorboor Azimi E, Badiei A, Hossaini Sadr M. Dramatic visible photocatalytic performance of g-C3N4-based nanocomposite due to the synergistic effect of AgBr and ZnO semiconductors. JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS 2018; 122:174-183. [DOI: 10.1016/j.jpcs.2018.06.024] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/19/2023]
|
18
|
Liquid-phase oxidation of toluene to benzaldehyde with molecular oxygen catalyzed by copper nanoparticles supported on graphene. RESEARCH ON CHEMICAL INTERMEDIATES 2018. [DOI: 10.1007/s11164-018-3404-2] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
|
19
|
Gunchenko PA, Li J, Liu B, Chen H, Pashenko AE, Bakhonsky VV, Zhuk TS, Fokin AA. Aerobic oxidations with N -hydroxyphthalimide in trifluoroacetic acid. MOLECULAR CATALYSIS 2018. [DOI: 10.1016/j.mcat.2017.12.017] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|
20
|
Huang C, Liu R, Yang W, Li Y, Huang J, Zhu H. Enhanced catalytic activity of MnCo-MOF-74 for highly selective aerobic oxidation of substituted toluene. Inorg Chem Front 2018. [DOI: 10.1039/c8qi00429c] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
Novel MnCo-MOF-74 catalysts were prepared and used for highly selective aerobic oxidation of substituted toluene under mild conditions.
Collapse
Affiliation(s)
- Cheng Huang
- Department of Applied Chemistry
- College of Chemistry and Molecular Engineering
- Nanjing Tech University
- Nanjing 211816
- China
| | - Rui Liu
- Department of Applied Chemistry
- College of Chemistry and Molecular Engineering
- Nanjing Tech University
- Nanjing 211816
- China
| | - Wenyu Yang
- Department of Applied Chemistry
- College of Chemistry and Molecular Engineering
- Nanjing Tech University
- Nanjing 211816
- China
| | - Yunpeng Li
- Department of Applied Chemistry
- College of Chemistry and Molecular Engineering
- Nanjing Tech University
- Nanjing 211816
- China
| | - Jinsong Huang
- Department of Applied Chemistry
- College of Chemistry and Molecular Engineering
- Nanjing Tech University
- Nanjing 211816
- China
| | - Hongjun Zhu
- Department of Applied Chemistry
- College of Chemistry and Molecular Engineering
- Nanjing Tech University
- Nanjing 211816
- China
| |
Collapse
|
21
|
Akhmedov VM, Melnikova NE, Akhmedov ID. Synthesis, properties, and application of polymeric carbon nitrides. Russ Chem Bull 2017. [DOI: 10.1007/s11172-017-1810-z] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
|
22
|
Bi L, Gao X, Ma Z, Zhang L, Wang D, Xie T. Enhanced Separation Efficiency of PtNi
x
/g-C3
N4
for Photocatalytic Hydrogen Production. ChemCatChem 2017. [DOI: 10.1002/cctc.201700640] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Lingling Bi
- College of Chemistry; Jilin University; Changchun 130012 P. R.. China), E-mile
| | - Xupeng Gao
- College of Chemistry; Jilin University; Changchun 130012 P. R.. China), E-mile
| | - Zhaochen Ma
- College of Chemistry; Jilin University; Changchun 130012 P. R.. China), E-mile
| | - Lijing Zhang
- Huaiyin Institute of Technology; Huaian 223001 P. R. China
| | - Dejun Wang
- College of Chemistry; Jilin University; Changchun 130012 P. R.. China), E-mile
- Department of Chemistry; Tsinghua University; Beijing 100084 P. R. China
| | - Tengfeng Xie
- College of Chemistry; Jilin University; Changchun 130012 P. R.. China), E-mile
| |
Collapse
|
23
|
Yuan H, Fang X, Ma Q, Mao J, Chen K, Chen Z, Li H. New mechanistic insight into the aerobic oxidation of methylaromatic compounds catalyzed by Co–Mn–Br and its applications. J Catal 2016. [DOI: 10.1016/j.jcat.2016.04.014] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
|