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Mohagheghian A, Besharati-Givi N, Ayagh K, Shirzad-Siboni M. Mineralization of diazinon by low-cost CuO-Kaolin nanocomposite under visible light based RSM methodology: Kinetics, cost analysis, reaction pathway and bioassay. J IND ENG CHEM 2022. [DOI: 10.1016/j.jiec.2022.09.018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Huang CH, Lu YJ, Pan YC, Liu HL, Chang JY, Sie JL, Pijanowska DG, Yang CM. Nanohollow Titanium Oxide Structures on Ti/FTO Glass Formed by Step-Bias Anodic Oxidation for Photoelectrochemical Enhancement. NANOMATERIALS 2022; 12:nano12111925. [PMID: 35683780 PMCID: PMC9182085 DOI: 10.3390/nano12111925] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/29/2022] [Revised: 05/27/2022] [Accepted: 06/02/2022] [Indexed: 02/04/2023]
Abstract
In this study, a new anodic oxidation with a step-bias increment is proposed to evaluate oxidized titanium (Ti) nanostructures on transparent fluorine-doped tin oxide (FTO) on glass. The optimal Ti thickness was determined to be 130 nm. Compared to the use of a conventional constant bias of 25 V, a bias ranging from 5 V to 20 V with a step size of 5 V for 3 min per period can be used to prepare a titanium oxide (TiOx) layer with nanohollows that shows a large increase in current of 142% under UV illumination provided by a 365 nm LED at a power of 83 mW. Based on AFM and SEM, the TiOx grains formed in the step-bias anodic oxidation were found to lead to nanohollow generation. Results obtained from EDS mapping, HR-TEM and XPS all verified the TiOx composition and supported nanohollow formation. The nanohollows formed in a thin TiOx layer can lead to a high surface roughness and photon absorbance for photocurrent generation. With this step-bias anodic oxidation methodology, TiOx with nanohollows can be obtained easily without any extra cost for realizing a high current under photoelectrochemical measurements that shows potential for electrochemical-based sensing applications.
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Affiliation(s)
- Chi-Hsien Huang
- Department of Materials Engineering, Ming Chi University of Technology, New Taipei 243, Taiwan; (C.-H.H.); (J.-L.S.)
| | - Yu-Jen Lu
- Department of Neurosurgery, Chang Gung Memorial Hospital at Linkou, Taoyuan City 333, Taiwan;
- The College of Medicine, Chang Gung University, Taoyuan City 333, Taiwan
| | - Yong-Chen Pan
- Department of Electronic Engineering, Chang Gung University, Taoyuan City 333, Taiwan; (Y.-C.P.); (H.-L.L.); (J.-Y.C.)
| | - Hui-Ling Liu
- Department of Electronic Engineering, Chang Gung University, Taoyuan City 333, Taiwan; (Y.-C.P.); (H.-L.L.); (J.-Y.C.)
| | - Jia-Yuan Chang
- Department of Electronic Engineering, Chang Gung University, Taoyuan City 333, Taiwan; (Y.-C.P.); (H.-L.L.); (J.-Y.C.)
| | - Jhao-Liang Sie
- Department of Materials Engineering, Ming Chi University of Technology, New Taipei 243, Taiwan; (C.-H.H.); (J.-L.S.)
| | - Dorota G. Pijanowska
- Nalecz Institute of Biocybernetics and Biomedical Engineering, Polish Academy of Sciences, 02-109 Warsaw, Poland
- Correspondence: (D.G.P.); (C.-M.Y.); Tel.: +48-22-6599143 (ext. 141) (D.G.P.); +886-3-2118800 (ext. 5960) (C.-M.Y.)
| | - Chia-Ming Yang
- Department of Materials Engineering, Ming Chi University of Technology, New Taipei 243, Taiwan; (C.-H.H.); (J.-L.S.)
- Department of Neurosurgery, Chang Gung Memorial Hospital at Linkou, Taoyuan City 333, Taiwan;
- Department of Electronic Engineering, Chang Gung University, Taoyuan City 333, Taiwan; (Y.-C.P.); (H.-L.L.); (J.-Y.C.)
- Institute of Electro-Optical Engineering, Chang Gung University, Taoyuan City 333, Taiwan
- Biosensor Group, Biomedical Engineering Research Center, Chang Gung University, Taoyuan City 333, Taiwan
- Artificial Intelligence Research Center, Chang Gung University, Taoyuan City 333, Taiwan
- Correspondence: (D.G.P.); (C.-M.Y.); Tel.: +48-22-6599143 (ext. 141) (D.G.P.); +886-3-2118800 (ext. 5960) (C.-M.Y.)
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Behera P, Subudhi S, Tripathy SP, Parida K. MOF derived nano-materials: A recent progress in strategic fabrication, characterization and mechanistic insight towards divergent photocatalytic applications. Coord Chem Rev 2022. [DOI: 10.1016/j.ccr.2021.214392] [Citation(s) in RCA: 25] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Wang Z, Miao R, He L, Guan Q, Shi Y. Green synthesis of MIL-100(Fe) derivatives and revealing their structure-activity relationship for 2,4-dichlorophenol photodegradation. CHEMOSPHERE 2022; 291:132950. [PMID: 34801575 DOI: 10.1016/j.chemosphere.2021.132950] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/24/2021] [Revised: 10/16/2021] [Accepted: 11/15/2021] [Indexed: 06/13/2023]
Abstract
MIL-100(Fe), a kind of iron-based metal-organic framework materials (MOFs), can be synthesized at room temperature or hydrothermal conditions, which are promising precursor materials for preparing photocatalysts to degrade some recalcitrant chlorophenols in industrial wastewater. However, the relationship between the structural characterization of MIL-100(Fe) derivatives and their photodegradation behavior of chlorophenol pollutants is still unclear. Thus, in this work, a porous Z-scheme α-Fe2O3/MIL-100(Fe) composite was successfully fabricated via partial-pyrolysis of MIL-100(Fe) precursor synthesized through green synthesis route, which was further used for degrading high-concentration of 2,4-dichlorophenol under visible-light illumination (λ > 420 nm). The effects of synthesis route and pyrolysis temperature of MIL-100(Fe) on the degradation efficiencies of as-derived materials for 2,4-dichlorophenol were investigated. The structure-activity relationship was illuminated in detail. Otherwise, the influence of several process factors, i.e., initial concentration and pH of the 2,4-dichlorophenol solution, catalyst dosage on the degradation efficiency of 2,4-dichlorophenol has also been performed. The removal efficiency of 2,4-dichlorophenol with the initial concentration of 100 mg L-1 reached up to 87.65% under optimized conditions. Lastly, the possible mechanism was explored based on trapping experiments and some other characterization results. The study in this paper not only exhibited new insight into the modified α-Fe2O3 material with high photocatalytic activity but also provided a promising method for treating wastewater containing 2,4-dichlorophenol or other similar organic pollutants.
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Affiliation(s)
- Zhijuan Wang
- Faculty of Environmental Science and Engineering, Kunming University of Science and Technology, 650500, Kunming, China; Faculty of Chemical Engineering and Technology, Xinjiang University, 830046, Urumqi, China; College of Chemistry and Environmental Science, Qujing Normal University, 655011, Qujing, China
| | - Rongrong Miao
- Faculty of Environmental Science and Engineering, Kunming University of Science and Technology, 650500, Kunming, China
| | - Liang He
- Faculty of Chemical Engineering, Kunming University of Science and Technology, 650500, Kunming, China.
| | - Qingqing Guan
- Faculty of Chemical Engineering and Technology, Xinjiang University, 830046, Urumqi, China.
| | - Yuzhen Shi
- Faculty of Environmental Science and Engineering, Kunming University of Science and Technology, 650500, Kunming, China
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Parashuram L, Prashanth MK, Krishnaiah P, Kumar CBP, Alharti FA, Kumar KY, Jeon BH, Raghu MS. Nitrogen doped carbon spheres from Tamarindus indica shell decorated with vanadium pentoxide; photoelectrochemical water splitting, photochemical hydrogen evolution & degradation of Bisphenol A. CHEMOSPHERE 2022; 287:132348. [PMID: 34624585 DOI: 10.1016/j.chemosphere.2021.132348] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/29/2021] [Revised: 09/07/2021] [Accepted: 09/22/2021] [Indexed: 06/13/2023]
Abstract
At present energy and environmental remediation are of highest priority for the well defined sustainability. Multifunctional materials that solve both the issues are on high demand. In the present work, a simple method has been followed to extract carbon spheres fromTamarindus indica(commonly known astamarind fruit) shelland doped with nitrogen (N-CS). Vanadium pentoxide nanoflakes were decorated aroundN-CS and the resultant is labeled as V2O5/N-CS nanocomposite. The spectroscopic, microscopic, elemental mapping and x-ray photoelectron spectroscopic characterization confirm the nitrogen doping and formation of hybrid material. N-CS, V2O5, and V2O5/N-CS nanocompositehave been evaluated for their efficiency to evolve hydrogen and for degradation of Bisphenol A (BPA) under visible light. In addition, electrocatalytic hydrogen evolution in presence of light has also been evaluated. The DRS spectrum proves the decrease in the bandgap of V2O5 upon its decoration around N-CS material. In a photochemical experiment, the V2O5/N-CS nanocomposite evolved 18,600 μmolg-1 of H2.Electrochemical hydrogen evolution has also been evaluated in presence of light and obtained the onset potential of -60mV with 52 mV dec-1 Tafel slope value. Scavenger studies indicate superoxide radicals and hydroxyl radicals are the active species responsible for the degradation of BPA. BPA degradation pathway has been predicted with the support of LC-MS results of the intermediates. All these results indicate the synthesized nanocomposite could be an efficient, stable multifunctional material for photocatalytic applications.
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Affiliation(s)
- L Parashuram
- Department of Chemistry, New Horizon College of Engineering, Outer Ring Road, Bangalore, 560103, India
| | - M K Prashanth
- Department of Chemistry, BNM Institute of Technology, Banashankari, Bangalore, 560070, India
| | - Prakash Krishnaiah
- Department of Earth Resources and Environmental Engineering, Hanyang University, 222, Wangsimni-ro, Seongdong-gu, Seoul, 04763, Republic of Korea
| | - C B Pradeep Kumar
- Department of Chemistry, Malnad College of Engineering, Hassan. 573202, India
| | - Fahad A Alharti
- Department of Chemistry, College of Science, King Saud University, Riyadh, 11451, Saudi Arabia
| | - K Yogesh Kumar
- Department of Chemistry, Faculty of Engineering and Technology, Jain University, Bangalore, 562112, India.
| | - Byong-Hun Jeon
- Department of Earth Resources and Environmental Engineering, Hanyang University, 222, Wangsimni-ro, Seongdong-gu, Seoul, 04763, Republic of Korea.
| | - M S Raghu
- Department of Chemistry, New Horizon College of Engineering, Outer Ring Road, Bangalore, 560103, India.
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Liang R, Wang S, Lu Y, Yan G, He Z, Xia Y, Liang Z, Wu L. Assembling Ultrafine SnO 2 Nanoparticles on MIL-101(Cr) Octahedrons for Efficient Fuel Photocatalytic Denitrification. Molecules 2021; 26:7566. [PMID: 34946648 PMCID: PMC8708904 DOI: 10.3390/molecules26247566] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2021] [Revised: 12/08/2021] [Accepted: 12/10/2021] [Indexed: 11/16/2022] Open
Abstract
Effectively reducing the concentration of nitrogen-containing compounds (NCCs) remains a significant but challenging task in environmental restoration. In this work, a novel step-scheme (S-scheme) SnO2@MCr heterojunction was successfully fabricated via a facile hydrothermal method. At this heterojunction, MIL-101(Cr) octahedrons are decorated with highly dispersed SnO2 quantum dots (QDs, approximate size 3 nm). The QDs are evenly wrapped around the MIL-101(Cr), forming an intriguing zero-dimensional/three-dimensional (0D/3D) S-scheme heterostructure. Under simulated sunlight irradiation (280 nm < λ < 980 nm), SnO2@MCr demonstrated superior photoactivity toward the denitrification of pyridine, a typical NCC. The adsorption capacity and adsorption site of SnO2@MCr were also investigated. Tests using 20%SnO2@MCr exhibited much higher activity than that of pure SnO2 and MIL-101(Cr); the reduction ratio of Cr(VI) is rapidly increased to 95% after sunlight irradiation for 4 h. The improvement in the photocatalytic activity is attributed to (i) the high dispersion of SnO2 QDs, (ii) the binding of the rich adsorption sites with pyridine molecules, and (iii) the formation of the S-scheme heterojunction between SnO2 and MIL-101(Cr). Finally, the photocatalytic mechanism of pyridine was elucidated, and the possible intermediate products and degradation pathways were discussed.
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Affiliation(s)
- Ruowen Liang
- Province University Key Laboratory of Green Energy and Environment Catalysis, Ningde Normal University, Ningde 352100, China; (R.L.); (S.W.); (Y.L.); (G.Y.); (Z.H.)
- Fujian Provincial Key Laboratory of Featured Materials in Biochemical Industry, Ningde Normal University, Ningde 352100, China
| | - Shihui Wang
- Province University Key Laboratory of Green Energy and Environment Catalysis, Ningde Normal University, Ningde 352100, China; (R.L.); (S.W.); (Y.L.); (G.Y.); (Z.H.)
- State Key Laboratory of Photocatalysis on Energy and Environment, Fuzhou University, Fuzhou 350002, China
| | - Yi Lu
- Province University Key Laboratory of Green Energy and Environment Catalysis, Ningde Normal University, Ningde 352100, China; (R.L.); (S.W.); (Y.L.); (G.Y.); (Z.H.)
- State Key Laboratory of Photocatalysis on Energy and Environment, Fuzhou University, Fuzhou 350002, China
| | - Guiyang Yan
- Province University Key Laboratory of Green Energy and Environment Catalysis, Ningde Normal University, Ningde 352100, China; (R.L.); (S.W.); (Y.L.); (G.Y.); (Z.H.)
- Fujian Provincial Key Laboratory of Featured Materials in Biochemical Industry, Ningde Normal University, Ningde 352100, China
- Xiamen Ocean Vocational College, Xiamen 361000, China
| | - Zhoujun He
- Province University Key Laboratory of Green Energy and Environment Catalysis, Ningde Normal University, Ningde 352100, China; (R.L.); (S.W.); (Y.L.); (G.Y.); (Z.H.)
- Fujian Provincial Key Laboratory of Featured Materials in Biochemical Industry, Ningde Normal University, Ningde 352100, China
| | - Yuzhou Xia
- Province University Key Laboratory of Green Energy and Environment Catalysis, Ningde Normal University, Ningde 352100, China; (R.L.); (S.W.); (Y.L.); (G.Y.); (Z.H.)
- Fujian Provincial Key Laboratory of Featured Materials in Biochemical Industry, Ningde Normal University, Ningde 352100, China
| | - Zhiyu Liang
- Province University Key Laboratory of Green Energy and Environment Catalysis, Ningde Normal University, Ningde 352100, China; (R.L.); (S.W.); (Y.L.); (G.Y.); (Z.H.)
- Fujian Provincial Key Laboratory of Featured Materials in Biochemical Industry, Ningde Normal University, Ningde 352100, China
| | - Ling Wu
- State Key Laboratory of Photocatalysis on Energy and Environment, Fuzhou University, Fuzhou 350002, China
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Koutavarapu R, Tamtam MR, Rao MC, Peera SG, Shim J. Recent progress in transition metal oxide/sulfide quantum dots-based nanocomposites for the removal of toxic organic pollutants. CHEMOSPHERE 2021; 272:129849. [PMID: 33582511 DOI: 10.1016/j.chemosphere.2021.129849] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/10/2020] [Revised: 01/06/2021] [Accepted: 01/30/2021] [Indexed: 06/12/2023]
Abstract
Water is an essential solvent that is extremely necessary for the survival of life. Water pollution due to the increased utilization of water for various processes, including domestic and industrial activities, poses a special threat that contaminates both surface and ground water. In recent years, advanced oxidation processes (AOPs) have been applied to deal with wastewater problems, which is a green method used to oxidize organic contaminants with strong oxidative radical species. Among the AOPs, photocatalytic technology is one of the most promising strategies for wastewater cleaning, which fulfills the aims of environmentally friendly and sustainable development. Owing to their unique electronic, optical, and structural properties, nanoscale semiconductors have received substantial interest as materials for AOPs, particularly inspired by their superb quantum confinement effects and large surface-area-to-volume ratio, which are essential for catalytic reaction kinetics. Recent advancements have revealed that semiconductor nanocrystals, known as quantum dots (QDs), are newly emerging zero-dimensional (0-D) nanomaterials, which have garnered much attention owing to their special physiochemical characteristics such as high conductivity, thermo-chemical and opto-mechanical stability, high adsorption coefficients, and, most importantly, their admirable recyclability. In this review, we provide a clear understanding of the importance of semiconductor QD-based nanocomposites in the degradation of organic pollutants, in addition to the mechanism involved in the reaction process. Following this, the enhancement of different materials, such as metal oxides and metal sulfide QD-based nanocomposites, is discussed in the context of combating environmental pollution.
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Affiliation(s)
| | - Mohan Rao Tamtam
- Chemical Engineering Department, Debre Berhan University, Debre Berhan 445, Ethiopia
| | - M C Rao
- Department of Physics, Andhra Loyola College, Vijayawada, 520-008, Andhra Pradesh, India.
| | - Shaik Gouse Peera
- Department of Environmental Science and Engineering, Keimyung University, Daegu, 42602, Republic of Korea.
| | - Jaesool Shim
- School of Mechanical Engineering, Yeungnam University, Gyeongsan, 712-749, Republic of Korea.
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Hu W, Jiang M, Liang R, Huang R, Xia Y, Liang Z, Yan G. Construction of Bi 2MoO 6/CdS heterostructures with enhanced visible light photocatalytic activity for fuel denitrification. Dalton Trans 2021; 50:2596-2605. [PMID: 33522547 DOI: 10.1039/d0dt03922e] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
In this work, a novel step-scheme (S-scheme) Bi2MoO6/CdS heterojunction (HJ) photocatalyst (PC) was successfully prepared by a two-step solvothermal method for the first time. One-dimensional CdS nanorods were prepared by a simple solvothermal method as a synthesis template. Then, a Bi2MoO6 precursor was added to obtain a series of Bi2MoO6/CdS HJ composite catalytic materials with different morphologies. The photocatalytic performance of the catalyst was investigated by simulating fuel denitration as a probe reaction under visible light excitation (>420 nm). When compared with pure Bi2MoO6 and CdS, the 0.65-Bi2MoO6/CdS composite shows the highest photocatalytic activity for pyridine degradation. Degradation of pyridine reached 81% after 240 min of visible light excitation. The degradation rate of 0.65-Bi2MoO6/CdS reached 0.4471 h-1, which was 1.8 and 3.2 times higher than that of CdS (0.2493 h-1) and Bi2MoO6 (0.1427 h-1), respectively. Combined with a series of characterisation results, the improvement in pyridine degradation activity was mainly attributed to (1) the S-scheme HJ structure between Bi2MoO6 and CdS, which greatly promoted the separation of photogenerated electrons and holes while retaining its strong redox ability, (2) the large specific surface area, which provided abundant active sites and efficient adsorption performance and catalytic performance, and (3) the special morphology, which induced multiple reflections of light, thereby improving absorption and utilisation of light. Moreover, after four cycles of pyridine denitrification, the samples still exhibited high activity, indicating good stability and recyclability of the composite catalyst. These findings provide a basis for the development of composite PCs for efficient fuel denitration under visible light irradiation.
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Affiliation(s)
- Weineng Hu
- State Key Laboratory of Photocatalysis on Energy and Environment, Fuzhou University, Fuzhou 350002, P. R. China
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Strategy for Encapsulation of CdS Quantum Dots into Zeolitic Imidazole Frameworks for Photocatalytic Activity. NANOMATERIALS 2020; 10:nano10122498. [PMID: 33322795 PMCID: PMC7764424 DOI: 10.3390/nano10122498] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/06/2020] [Revised: 12/02/2020] [Accepted: 12/11/2020] [Indexed: 01/30/2023]
Abstract
Encapsulating CdS quantum dots (QDs) into zeolitic imidazole framework-8 (ZIF-8) can offer several advantages for photocatalysis. Various types of capping agents have been used to encapsulate QDs into ZIF-8 nanopores. An effective method for encapsulating CdS QDs into ZIF-8 is to use 2-mercaptoimidazole as the capping agent. This is because 2-mercaptoimidazole is similar to the imidazolate ligands of ZIFs and can used for capping active species with simultaneous encapsulation during the crystal growth of ZIF-8. Compared to other widely used capping agents such as polyvinylpyrrolidone (PVP), using 2-mercaptoimidazole for encapsulating CdS QDs into ZIF-8 revealed photocatalytic effects along with the molecular sieving effect when using differently sized molecular redox mediators such as methyl viologen (MV2+) and diquat (DQ2+).
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