1
|
Ng JJ, Sim LC, Oh WD, Saravanan P, Tan B, Leong KH. Accelerated sunlight photocatalysis through improved electron mobility between g-C 3N 4 and BiPO 4 nanomaterial. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:86068-86076. [PMID: 34523092 DOI: 10.1007/s11356-021-16449-y] [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: 05/04/2021] [Accepted: 09/05/2021] [Indexed: 06/13/2023]
Abstract
Herein, we report a detailed study on creating heterojunction between graphitic carbon nitride (g-C3N4) and bismuth phosphate (BiPO4), enhancing the unpaired free electron mobility. This leads to an accelerated photocatalysis of 2,4-dichlorophenols (2,4-DCPs) under sunlight irradiation. The heterojunction formation was efficaciously conducted via a modest thermal deposition technique. The function of g-C3N4 plays a significant role in generating free electrons under sunlight irradiation. Together, the generated electrons at the g-C3N4 conduction band (CB) are transferred and trapped by the BiPO4 to form active superoxide anion radicals (•O2-). These active radicals will be accountable for the photodegradation of 2,4-DCPs. The synthesized composite characteristics were methodically examined through several chemical and physical studies. Due to the inimitable features of both g-C3N4 and BiPO4, its heterojunction formation, 2.5wt% BiPO4/g-C3N4 achieved complete 2,4-DCP removal (100%) in 90 min under sunlight irradiation. This is due to the presence of g-C3N4 that enhanced electron mobility through the formation of heterojunctions that lengthens the electron-hole pairs' lifetime and maximizes the entire solar spectrum absorption to generate active electrons at the g-C3N4 conduction band. Thus, this formation significantly draws the attention for future environmental remediation, especially in enhancing the entire solar spectrum's harvesting.
Collapse
Affiliation(s)
- Jit Jang Ng
- Department of Environmental Engineering, Faculty of Engineering and Green Technology, Universiti Tunku Abdul Rahman, Jalan Universiti, Bandar Barat, 31900, Kampar, Perak, Malaysia
| | - Lan Ching Sim
- Department of Chemical Engineering, Lee Kong Chian Faculty of Engineering and Science, Universiti Tunku Abdul Rahman, Jalan Sungai Long 9, Bandar Sungai Long, 43000, Kajang, Selangor, Malaysia
| | - Wen-Da Oh
- School of Chemical Sciences, Universiti Sains Malaysia, 11800, Penang, Malaysia
| | - Pichiah Saravanan
- Department of Environmental Science and Engineering, Indian Institute of Technology (ISM) Dhanbad, Dhanbad, Jharkhand, 826004, India
| | - Bo Tan
- State Key Laboratory of Hydraulics and Mountain River Engineering, College of Water Resource & Hydropower, Sichuan University, Chengdu, 610065, Sichuan, China
| | - Kah Hon Leong
- Department of Environmental Engineering, Faculty of Engineering and Green Technology, Universiti Tunku Abdul Rahman, Jalan Universiti, Bandar Barat, 31900, Kampar, Perak, Malaysia.
| |
Collapse
|
2
|
Underwood TM, Robinson RS. Adducing Knowledge Capabilities of Instrumental Techniques Through the Exploration of Heterostructures' Modification Methods. Chemphyschem 2022; 23:e202200241. [PMID: 35965256 PMCID: PMC9804862 DOI: 10.1002/cphc.202200241] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2022] [Revised: 07/25/2022] [Indexed: 01/09/2023]
Abstract
The ongoing evolution of technology has facilitated the global research community to rapidly escalate the constant development of novel advancements in science. At the forefront of such achievements in the field of photocatalysis is the utilisation, and in oftentimes, the adaptation of modern instrumentation to understand photo-physical properties of complex heterostructures. For example, coupling in-situ X-ray Raman scattering spectroscopy for real-time degradation of catalytic materials.
Collapse
Affiliation(s)
- Timothy M. Underwood
- School of Chemistry and PhysicsUniversity of KwaZulu-NatalPrivate Bag X01, ScottsvillePietermaritzburg3209South Africa
| | - Ross S. Robinson
- School of Chemistry and PhysicsUniversity of KwaZulu-NatalPrivate Bag X01, ScottsvillePietermaritzburg3209South Africa
| |
Collapse
|
3
|
Selective Oxidation of Benzyl Alcohol in the Aqueous Phase by TiO
2
‐Based Photocatalysts: A Review. Chem Eng Technol 2021. [DOI: 10.1002/ceat.202100321] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
|
4
|
Li X, Deng Y, Zhao Z, Liu Y, Zhang C, Fu Z. A green catalyst-free concomitant air oxidation of DMSO and cumene to form methylsulfonylmethane (dimethylsulfone). J Sulphur Chem 2021. [DOI: 10.1080/17415993.2021.1982943] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- Xiaolong Li
- National & Local Joint Engineering Laboratory for New Petro-chemical Materials and Fine Utilization of Resources, Key Laboratory of Resource Fine-Processing and advanced materials of Hunan Province, College of Chemistry and Chemical Engineering, Hunan Normal University, Changsha, People’s Republic of China
| | - Youer Deng
- National & Local Joint Engineering Laboratory for New Petro-chemical Materials and Fine Utilization of Resources, Key Laboratory of Resource Fine-Processing and advanced materials of Hunan Province, College of Chemistry and Chemical Engineering, Hunan Normal University, Changsha, People’s Republic of China
| | - Zhiying Zhao
- National & Local Joint Engineering Laboratory for New Petro-chemical Materials and Fine Utilization of Resources, Key Laboratory of Resource Fine-Processing and advanced materials of Hunan Province, College of Chemistry and Chemical Engineering, Hunan Normal University, Changsha, People’s Republic of China
| | - Yachun Liu
- National & Local Joint Engineering Laboratory for New Petro-chemical Materials and Fine Utilization of Resources, Key Laboratory of Resource Fine-Processing and advanced materials of Hunan Province, College of Chemistry and Chemical Engineering, Hunan Normal University, Changsha, People’s Republic of China
| | - Chao Zhang
- National & Local Joint Engineering Laboratory for New Petro-chemical Materials and Fine Utilization of Resources, Key Laboratory of Resource Fine-Processing and advanced materials of Hunan Province, College of Chemistry and Chemical Engineering, Hunan Normal University, Changsha, People’s Republic of China
| | - Zaihui Fu
- National & Local Joint Engineering Laboratory for New Petro-chemical Materials and Fine Utilization of Resources, Key Laboratory of Resource Fine-Processing and advanced materials of Hunan Province, College of Chemistry and Chemical Engineering, Hunan Normal University, Changsha, People’s Republic of China
| |
Collapse
|
5
|
Li P, Zhang T, Mushtaq MA, Wu S, Xiang X, Yan D. Research Progress in Organic Synthesis by Means of Photoelectrocatalysis. CHEM REC 2021; 21:841-857. [PMID: 33656241 DOI: 10.1002/tcr.202000186] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2020] [Revised: 02/17/2021] [Accepted: 02/17/2021] [Indexed: 01/20/2023]
Abstract
The rapid development of radical chemistry has spurred several innovative strategies for organic synthesis. The novel approaches for organic synthesis play a critical role in promoting and regulating the single-electron redox activity. Among them, photoelectrocatalysis (PEC) has attained considerable attention as the most promising strategy to convert organic compounds into fine chemicals. This review highlights the current progress in organic synthesis through PEC, including various catalytic reactions, catalyst systems and practical applications. The numerous catalytic reactions suffer the high overpotential and poor conversion efficiency, depending on the design of electrolyzers and the reaction mechanisms. We also considered the recent developments with special emphasis on scientific problems and efficient solutions, which enhance accessibility to utilize and further develop the photoelectrocatalytic technology for the specific chemical bonds formation and the fabrication of numerous catalytic systems.
Collapse
Affiliation(s)
- Pengyan Li
- Beijing Key Laboratory of Energy Conversion and Storage Materials, College of Chemistry, and Key Laboratory of Radiopharmaceuticals, Ministry of Education, Beijing Normal University, Beijing, 100875, P. R. China
| | - Tingting Zhang
- State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing, 100029, P. R. China
| | - Muhammad Asim Mushtaq
- State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing, 100029, P. R. China
| | - Siqin Wu
- Beijing Key Laboratory of Energy Conversion and Storage Materials, College of Chemistry, and Key Laboratory of Radiopharmaceuticals, Ministry of Education, Beijing Normal University, Beijing, 100875, P. R. China
| | - Xu Xiang
- State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing, 100029, P. R. China
| | - Dongpeng Yan
- Beijing Key Laboratory of Energy Conversion and Storage Materials, College of Chemistry, and Key Laboratory of Radiopharmaceuticals, Ministry of Education, Beijing Normal University, Beijing, 100875, P. R. China.,College of Chemistry and Molecular Engineering, Zhengzhou University, Zhengzhou, 450001, P. R. China
| |
Collapse
|
6
|
Visible-Light Photocatalysts and Their Perspectives for Building Photocatalytic Membrane Reactors for Various Liquid Phase Chemical Conversions. Catalysts 2020. [DOI: 10.3390/catal10111334] [Citation(s) in RCA: 34] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
Photocatalytic organic synthesis/conversions and water treatment under visible light are a challenging task to use renewable energy in chemical transformations. In this review a brief overview on the mainly employed visible light photocatalysts and a discussion on the problems and advantages of Vis-light versus UV-light irradiation is reported. Visible light photocatalysts in the photocatalytic conversion of CO2, conversion of acetophenone to phenylethanol, hydrogenation of nitro compounds, oxidation of cyclohexane, synthesis of vanillin and phenol, as well as hydrogen production and water treatment are discussed. Some applications of these photocatalysts in photocatalytic membrane reactors (PMRs) for carrying out organic synthesis, conversion and/or degradation of organic pollutants are reported. The described cases show that PMRs represent a promising green technology that could shift on applications of industrial interest using visible light (from Sun) active photocatalysts.
Collapse
|