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Teja YN, Sakar M. Comprehensive Insights into the Family of Atomically Thin 2D-Materials for Diverse Photocatalytic Applications. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2023; 19:e2303980. [PMID: 37461252 DOI: 10.1002/smll.202303980] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/11/2023] [Revised: 07/05/2023] [Indexed: 11/16/2023]
Abstract
2D materials with their fascinating physiochemical, structural, and electronic properties have attracted researchers and have been used for a variety of applications such as electrocatalysis, photocatalysis, energy storage, magnetoresistance, and sensing. In recent times, 2D materials have gained great momentum in the spectrum of photocatalytic applications such as pollutant degradation, water splitting, CO2 reduction, NH3 production, microbial disinfection, and heavy metal reduction, thanks to their superior properties including visible light responsive band gap, improved charge separation and electron mobility, suppressed charge recombination and high surface reactive sites, and thus enhance the photocatalytic properties rationally as compared to 3D and other low-dimensional materials. In this context, this review spot-lights the family of various 2D materials, their properties and their 2D structure-induced photocatalytic mechanisms while giving an overview on their synthesis methods along with a detailed discussion on their diverse photocatalytic applications. Furthermore, the challenges and the future opportunities are also presented related to the future developments and advancements of 2D materials for the large-scale real-time photocatalytic applications.
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Affiliation(s)
- Y N Teja
- Centre for Nano and Material Sciences, Jain (Deemed to be) University, Jain Global Campus, Kanakapura, Bangalore, Karnataka, 562112, India
| | - Mohan Sakar
- Centre for Nano and Material Sciences, Jain (Deemed to be) University, Jain Global Campus, Kanakapura, Bangalore, Karnataka, 562112, India
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Jeya P, Keerthana SP, Kungumadevi L, Yuvakkumar R, Ravi G, Kandasami A, Senthil TS. Gamma irradiation effect on photocatalytic properties of Cu and Sr ions codoped PbS. ENVIRONMENTAL RESEARCH 2023; 226:115651. [PMID: 36894113 DOI: 10.1016/j.envres.2023.115651] [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: 12/08/2022] [Revised: 02/28/2023] [Accepted: 03/06/2023] [Indexed: 06/18/2023]
Abstract
Gamma-irradiation effects on photocatalytic action of PbS nanocrystallites codoped with Cu and Sr ions were performed for organic dye degradation. The physical and chemical characterizations of these nanocrystallites were examined employing X-ray diffraction, Raman, and field emission electron microscopic analysis. The optical bandgaps of gamma-irradiated PbS with co-dopants have shifted from 1.95 eV (pristine PbS) to 2.45 eV in the visible spectrum. Under direct sunlight, the photocatalytic action of these compounds against methylene blue (MB) was investigated. Observations indicated that gamma-irradiated Pb(0.98)Cu0.01Sr0.01S nanocrystallite sample exhibits a higher photocatalytic degradation activity of 74.02% in 160 min and stability of 69.4% after three cycles, suggesting that gamma irradiation could potentially influence organic MB degradation. This is due to combined action of high-energy gamma irradiation (at an optimzed dose), which causes sulphur vacancies, and defects created by dopant ions, which alter the crystal structure by inducing strain in the crystal lattice, hence altering the crystallinity of PbS.
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Affiliation(s)
- P Jeya
- Department of Physics, CMS College, MG University, Kottayam, Kerala, India; Department of Physics, Mother Teresa Women's University, Kodaikanal, India
| | - S P Keerthana
- Department of Physics, Alagappa University, Karaikudi, 630 003, Tamil Nadu, India
| | - L Kungumadevi
- Department of Physics, Mother Teresa Women's University, Kodaikanal, India.
| | - R Yuvakkumar
- Department of Physics, Alagappa University, Karaikudi, 630 003, Tamil Nadu, India.
| | - G Ravi
- Department of Physics, Alagappa University, Karaikudi, 630 003, Tamil Nadu, India; Department of Physics, Chandigarh University, Mohali, 140 413, Punjab, India
| | - Asokan Kandasami
- Inter University Accelerator Centre, New Delhi-110067, India; Department of Physics & Centre for Interdisciplinary Research, University of Petroleum and Energy Studies (UPES), Dehradun, India
| | - T S Senthil
- Department of Physics, Erode Sengunthar Engineering College, Erode, India
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Thiehmed ZA, Altahtamouni TM. Morphology Control of TiO 2 Nanorods Using KBr Salt for Enhancing the Photocatalytic Activity of TiO 2 and MoS 2/TiO 2 Heterostructures. NANOMATERIALS (BASEL, SWITZERLAND) 2022; 12:2904. [PMID: 36079942 PMCID: PMC9457778 DOI: 10.3390/nano12172904] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/23/2022] [Revised: 06/05/2022] [Accepted: 06/18/2022] [Indexed: 06/15/2023]
Abstract
In this study, the effect of KBr salt on the growth of TiO2 nanorods (NRs) was systematically studied. The addition of KBr with different concentrations provides a controllable growth of TiO2 NRs using hydrothermal method. The results revealed that the presence of KBr molecules affects the growth rate by suppressing the growth in the lateral direction and allowing for axial growth. This results in affecting the morphology by decreasing the diameter of the nanorods, and increasing the free space between them. Enhancing the free spaces between the adjacent nanorods gives rise to remarkable increase in the internal surface area, with more exposure side surface. To obtain benefit from the enlargement in the inner surface area, TiO2 NRs were used for the preparation of MoS2/TiO2 heterostructures. To study the influence of the morphology on their activity, TiO2 NRs samples with different KBr concentrations as well as the MoS2/TiO2 heterostructures were evaluated towards the photocatalytic degradation of Rhodamine B dyes.
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Rahman A, Jennings JR, Tan AL, Khan MM. Molybdenum Disulfide-Based Nanomaterials for Visible-Light-Induced Photocatalysis. ACS OMEGA 2022; 7:22089-22110. [PMID: 35811905 PMCID: PMC9260757 DOI: 10.1021/acsomega.2c01314] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/04/2022] [Accepted: 06/08/2022] [Indexed: 05/08/2023]
Abstract
Visible-light-responsive photocatalytic materials have a multitude of important applications, ranging from energy conversion and storage to industrial waste treatment. Molybdenum disulfide (MoS2) and its variants exhibit high photocatalytic activity under irradiation by visible light as well as good stability and recyclability, which are desirable for all photocatalytic applications. MoS2-based materials have been widely applied in various fields such as wastewater treatment, environmental remediation, and organic transformation reactions because of their excellent physicochemical properties. The present review focuses on the fundamental properties of MoS2, recent developments and remaining challenges, and key strategies for tackling issues related to the utilization of MoS2 in photocatalysis. The application of MoS2-based materials in visible-light-induced catalytic reactions for the treatment of diverse kinds of pollutants including industrial, environmental, pharmaceutical, and agricultural waste are also critically discussed. The review concludes by highlighting the prospects of MoS2 for use in various established and emerging areas of photocatalysis.
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Affiliation(s)
- Ashmalina Rahman
- Chemical
Sciences, Faculty of Science, Universiti
Brunei Darussalam, Jalan Tungku Link, Gadong, BE 1410, Brunei Darussalam
| | - James Robert Jennings
- Applied
Physics, Faculty of Science, Universiti
Brunei Darussalam, Jalan Tungku Link, Gadong, BE 1410, Brunei Darussalam
- Optoelectronic
Device Research Group, Universiti Brunei
Darussalam, Jalan Tungku Link, Gadong, BE 1410, Brunei Darussalam
| | - Ai Ling Tan
- Chemical
Sciences, Faculty of Science, Universiti
Brunei Darussalam, Jalan Tungku Link, Gadong, BE 1410, Brunei Darussalam
| | - Mohammad Mansoob Khan
- Chemical
Sciences, Faculty of Science, Universiti
Brunei Darussalam, Jalan Tungku Link, Gadong, BE 1410, Brunei Darussalam
- Optoelectronic
Device Research Group, Universiti Brunei
Darussalam, Jalan Tungku Link, Gadong, BE 1410, Brunei Darussalam
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Vo TK, Nguyen MT, Nguyen VC, Kim J. Microwave-assisted synthesis of MgFe2O4-decorated UiO-66(Zr)-NH2 composites for collaborative adsorption and photocatalytic degradation of tetracycline. KOREAN J CHEM ENG 2022. [DOI: 10.1007/s11814-022-1131-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Guo RT, Wang J, Bi ZX, Chen X, Hu X, Pan WG. Recent advances and perspectives of g-C 3N 4-based materials for photocatalytic dyes degradation. CHEMOSPHERE 2022; 295:133834. [PMID: 35124079 DOI: 10.1016/j.chemosphere.2022.133834] [Citation(s) in RCA: 35] [Impact Index Per Article: 17.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/16/2021] [Revised: 01/21/2022] [Accepted: 01/31/2022] [Indexed: 06/14/2023]
Abstract
Photocatalytic degradation technology is regarded as a promising technology for dye-contained wastewater treatment due to its superior efficiency and recycling. The key to the implementation of photocatalytic degradation technology is the selection of sunlight-active photocatalyst. Graphitic carbon nitride (g-C3N4) photocatalyst has been put into a lot of research in the field of organic pollutant degradation because of its low cost, suitable electronic structure and high chemical stability. In this perspective review, we comprehensively discuss the recent advance of photocatalytic dyes degradation over g-C3N4-based materials. The properties, structure and preparation methods of g-C3N4 are briefly introduced. Furthermore, the progress in improving the degradation efficiency of g-C3N4-based photocatalyst is highlighted in the article. The possible pathways and different active species for dyes decomposition are also summarized. We expect this review can provide instructive application of g-C3N4-based catalysts for environmental remediation.
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Affiliation(s)
- Rui-Tang Guo
- College of Energy and Mechanical Engineering, Shanghai University of Electric Power, Shanghai, China; Shanghai Engineering Research Center of Power Generation Environment Protection, Shanghai, China.
| | - Juan Wang
- College of Energy and Mechanical Engineering, Shanghai University of Electric Power, Shanghai, China
| | - Zhe-Xu Bi
- College of Energy and Mechanical Engineering, Shanghai University of Electric Power, Shanghai, China
| | - Xin Chen
- College of Energy and Mechanical Engineering, Shanghai University of Electric Power, Shanghai, China
| | - Xing Hu
- College of Energy and Mechanical Engineering, Shanghai University of Electric Power, Shanghai, China
| | - Wei-Guo Pan
- College of Energy and Mechanical Engineering, Shanghai University of Electric Power, Shanghai, China; Shanghai Engineering Research Center of Power Generation Environment Protection, Shanghai, China
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