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Dastider A, Saha H, Anik MJF, Jamal M, Billah MM. Second phase Cu 2O boosted photocatalytic activity of fluorine doped CuO nanoparticles. RSC Adv 2024; 14:11677-11693. [PMID: 38605896 PMCID: PMC11007595 DOI: 10.1039/d3ra08790e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2023] [Accepted: 03/30/2024] [Indexed: 04/13/2024] Open
Abstract
The photocatalytic activity of fluorine (F) doped CuO nanoparticles (NPs) prepared employing modified sol-gel process was investigated here in this study. Structural and elemental characterization using XRD and XPS data confirmed successful incorporation of F as dopant. F doping led to lattice distortion and reduced crystallinity with smaller crystallite size while promoting the emergence of Cu2O as the second phase. Morphological analysis showed irregularly shaped, fused particles with a decreasing particle size trend upon doping. Addition of hydrogen peroxide generated hydroxyl radicals (OH˙) under ultra-violet (UV) light, which effectively degrades pollutants by facilitating the photocatalytic kinetics. Photocatalytic activity of all the nanoparticles was examined against Rhodamine B (Rh B) dye and most efficient degradation (97.78%) was observed for 3 mol% F dopant concentration. The emergence of Cu2O phase for doping beyond 1 mol% F doped CuO might be the prime reason to enhance its degradation performance. Conversely, 5 mol% doping caused notable phase changes and decreased degradation rate (88.05%) due to increased recombination rate in presence of metallic copper. The ability of F doped CuO nanoparticles to disintegrate organic contaminants by producing reactive oxygen species when exposed to UV light suggests their potential effectiveness in applications such as dye degradation, water purification, and environmental sustainability.
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Affiliation(s)
- Ankita Dastider
- Department of Materials and Metallurgical Engineering (MME), Bangladesh University of Engineering and Technology (BUET) Dhaka-1000 Bangladesh
| | - Hridoy Saha
- Department of Materials and Metallurgical Engineering (MME), Bangladesh University of Engineering and Technology (BUET) Dhaka-1000 Bangladesh
| | - Md Jannatul Ferdous Anik
- Department of Materials and Metallurgical Engineering (MME), Bangladesh University of Engineering and Technology (BUET) Dhaka-1000 Bangladesh
| | - Moniruzzaman Jamal
- Department of Materials and Metallurgical Engineering (MME), Bangladesh University of Engineering and Technology (BUET) Dhaka-1000 Bangladesh
- Department of Materials Science and Engineering, University of California Berkeley CA 94720 USA
| | - Md Muktadir Billah
- Department of Materials and Metallurgical Engineering (MME), Bangladesh University of Engineering and Technology (BUET) Dhaka-1000 Bangladesh
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2
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Linh HX, Linh PH, Tuan DD, Quynh PH, Hoa NX, Thanh DV, Hiep HP, Dung NQ. Facile route for preparation of cuprous oxide/copper/cupric oxide nanoparticles by using simultaneous electrochemical and reduction reaction. Heliyon 2024; 10:e25195. [PMID: 38352799 PMCID: PMC10862522 DOI: 10.1016/j.heliyon.2024.e25195] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2023] [Revised: 01/01/2024] [Accepted: 01/23/2024] [Indexed: 02/16/2024] Open
Abstract
Cuprous oxide/copper/cupric oxide nanoparticles were synthesized through a hybrid process involving anodic dissolution and a controlled redox reaction between NaOH and glucose in the solution. The study demonstrates the structural manipulation of the material by varying the reaction components within the solution. Morphology, structural analyses using SEM (Scanning Electron Microscope), EDX (Energy-dispersive X-ray spectroscopy), TEM (Transmission Electron Microscope), FTIR (Fourier Transform Infrared Spectroscopy), XRD (X-ray diffraction), and XPS (X-ray photoelectron spectroscopy) unveiled the tunability of the material's structure based on the reaction components. Nitrogen adsorption analysis employing the Brunauer-Emmett-Teller (BET) equation confirmed the material's porosity, while Dynamic Light Scattering (DLS) measurements provided insights into the materials' hydrodynamic size and zeta potential. The results demonstrated that by increasing the glucose/NaOH ratio during the reaction, the different structures and morphologies of the distinct products were obtained from the clustering of small nanoparticles to cubic shape and flower-like structure. Antibacterial activity tests conducted on various bacterial strains showed a correlation between the morphology and structure of the material and its antibacterial properties. The highest substantial antibacterial efficacy against all tested bacterial strains at a dosage of 100 μg/L was obtained for the samples with clustering morphology, whereas the remaining materials showed no discernible antibacterial effect against one of the studied bacteria. The results also demonstrated that the sample with a clustering structure exhibited superior antibacterial properties when dispersed in water containing dimethylsulfoxide.
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Affiliation(s)
- Ha Xuan Linh
- International School, Thai Nguyen University, Tan Tinh Ward, Thai Nguyen City, Thai Nguyen, 25000, Viet Nam
| | - Pham Hoai Linh
- Institute of Materials Science, Vietnam Academy of Science and Technology, Ha Noi, 100000, Viet Nam
| | - Duong Dinh Tuan
- International School, Thai Nguyen University, Tan Tinh Ward, Thai Nguyen City, Thai Nguyen, 25000, Viet Nam
| | - Pham Huong Quynh
- Hanoi University of Industry, 298 Cau Dien Street, Bac Tu Liem District, Hanoi, 100000, Viet Nam
| | - Nguyen Xuan Hoa
- Faculty of Basic Science, Thai Nguyen University of Medicine and Pharmacy, Luong Ngoc Quyen, Thai Nguyen City, Thai Nguyen, 25000, Viet Nam
| | - Dang Van Thanh
- Faculty of Basic Science, Thai Nguyen University of Medicine and Pharmacy, Luong Ngoc Quyen, Thai Nguyen City, Thai Nguyen, 25000, Viet Nam
- Faculty of Environmental Sciences, University of Science, Vietnam National University, Hanoi, 334 Nguyen Trai Road, Ha Noi, 100000, Viet Nam
| | - Hoang Phu Hiep
- Faculty of Biology, Thai Nguyen Unversity of Education, 20 Luong Ngoc Quyen, Thai Nguyen City, Thai Nguyen, 25000, Viet Nam
| | - Nguyen Quoc Dung
- Faculty of Chemistry, Thai Nguyen Unversity of Education, 20 Luong Ngoc Quyen, Thai Nguyen City, Thai Nguyen, 25000, Viet Nam
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3
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Wang D, Wang T, Yang H, Yang J, Shi Z. Spectroscopy and visible-light driven photocatalytic properties of a microcrystalline Cu-complex derived from a novel Gabapentin Schiff base. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2023; 302:123138. [PMID: 37453380 DOI: 10.1016/j.saa.2023.123138] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/23/2023] [Revised: 06/13/2023] [Accepted: 07/11/2023] [Indexed: 07/18/2023]
Abstract
A novel Gabapentin derivative Schiff base Gasa was synthesized by condensing Gabapentin with salicylaldehyde, which was further coordinated with Cu2+ in methanol to give a microcrystalline Cu(II) complex Cu(Gasa)2. The synthesized Gasa and Cu(Gasa)2 were further characterized by single-crystal X-ray diffraction, scanning electron microscopy (SEM), as well as the FT-IR, Raman, electronic and fluorescence spectra. Cu(Gasa)2 exhibited excellent visible-light driven photocatalytic activities in removal of Congo red (CR) and Methylene blue (MB) dyes from aqueous solution in the presence of H2O2 as oxidant. It was revealed that ∙OH radicals played the most important role in the photodegradation processes of organic dyes, and the photodegradation of CR and MB fitted well with the pseudo-first-order kinetic model. In addition, solid state luminescent properties of Gasa and Cu(Gasa)2 were also studied in detail.
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Affiliation(s)
- Dawei Wang
- Key Laboratory for Forest Resources Conservation and Utilization in the Southwest Mountains of China, Ministry of Education, Southwest Forestry University, Kunming 650224, PR China.
| | - Tao Wang
- School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, PR China
| | - Haiyan Yang
- Key Laboratory of State Forestry and Grassland Administration on Highly-Efficient Utilization of Forestry Biomass Resources in Southwest China, Southwest Forestry University, Kunming 650224, PR China
| | - Jing Yang
- Key Laboratory of State Forestry and Grassland Administration on Highly-Efficient Utilization of Forestry Biomass Resources in Southwest China, Southwest Forestry University, Kunming 650224, PR China
| | - Zhengjun Shi
- Key Laboratory for Forest Resources Conservation and Utilization in the Southwest Mountains of China, Ministry of Education, Southwest Forestry University, Kunming 650224, PR China.
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4
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Bibi S, Shah SS, Muhammad F, Siddiq M, Kiran L, Aldossari SA, Sheikh Saleh Mushab M, Sarwar S. Cu-doped mesoporous TiO 2 photocatalyst for efficient degradation of organic dye via visible light photocatalysis. CHEMOSPHERE 2023; 339:139583. [PMID: 37480955 DOI: 10.1016/j.chemosphere.2023.139583] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/11/2023] [Revised: 07/10/2023] [Accepted: 07/18/2023] [Indexed: 07/24/2023]
Abstract
A solvothermal method was used to synthesize the mesoporous TiO2, (1-3w %) Cu-doped mesoporous TiO2 membrane with the help of a bioreactor. To understand the physicochemical composition of all synthesized nanomaterials, the structure, morphology and crystallinity of the materials were studied using X-ray diffractometer (XRD), Field emission scanning electron microscopy (FESEM), Fourier transform-infrared (FTIR), Energy dispersive X-ray spectroscopy (EDS) and cyclic voltammetry (CV). Under artificial light source (500 W mercury bulb) irradiations, the nano catalysts' catalytic effectiveness was examined for the azo dyes, namely Congo red. Cu-doping causes a shift in the light absorption of mTiO2 from the ultraviolet to the visible region. The 3w% Cu-doped mTiO2 photocatalyst exhibits lower band gap energy (2.6eV) than TiO2 which is 3.2 eV to efficiently utilize solar energy. As a result, the light absorption was shifted towards the visible spectrum. The recommended mTiO2 and (1, 2, 3) w% Cu-doped mTiO2 photocatalysts were used to photodegrade Congo red and methylene blue. For the degradation of CR, the mTiO2 photocatalyst exhibited 61% and 3w% Cu-doped mTiO2 demonstrated 99% photocatalytic performance after 50 min. A variety of scavengers were also utilized to distinguish the active species by catching the radicals and holes created during the process of photocatalytic degradation. CV indicates the presence of Cu2+ and Cu1+ in Cu-doped mTiO2. Oxygen vacancies and the electronegative surface of Cu1+ seem to perform the photocatalytic reduction of CR.
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Affiliation(s)
- Sidra Bibi
- Chemistry Department, Quaid-i-Azam University, Islamabad, 45320, Pakistan.
| | - Syed Sakhawat Shah
- Chemistry Department, Quaid-i-Azam University, Islamabad, 45320, Pakistan
| | - Fawad Muhammad
- Shandong Provincial Key Lab for Preparation and Measurement of Building Materials, University of Jinan, Jinan, 250022, Shandong, China
| | - Muhammad Siddiq
- Chemistry Department, Quaid-i-Azam University, Islamabad, 45320, Pakistan
| | - Laraib Kiran
- Chemistry Department, Quaid-i-Azam University, Islamabad, 45320, Pakistan
| | - Samar A Aldossari
- Department of Chemistry, College of Science, King Saud University, P. O. Box 2455 Riyadh 11451, Saudi Arabia
| | | | - Shabnam Sarwar
- Institute de Biology en Sante, University of Angers, 4 Rue Larrey, Angers, 49100, France
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5
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Chen W, Liu Z, Dai X, Zhao Z, Du B, Zhang K, Ma D, Fan L, Huang X. Transformation of tetracycline by multipurpose Fe-Mn-Cu nano-composite oxide: Dual-synergies and dual-mechanisms. JOURNAL OF HAZARDOUS MATERIALS 2023; 454:131400. [PMID: 37099908 DOI: 10.1016/j.jhazmat.2023.131400] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/10/2023] [Revised: 03/28/2023] [Accepted: 04/11/2023] [Indexed: 05/19/2023]
Abstract
The interaction between tetracycline (TTC) and mixed metallic oxides remains unclear, and even complexation usually is ignored. This study firstly distinguished the triple functions of adsorption, transformation and complexation in presence of Fe-Mn-Cu nano-composite metallic oxide (FMC) on TTC. Rapid adsorption and faint complexation initiated the transformation that dominated the entire reactions at 180 min, which completed TTC removal (up to 99.04%) synergistically within 48 h. Environmental factors (dosage, pH and coexisting ions) had small influence on TTC removal, which primarily depended on the stable transformation characteristics of FMC. Kinetic models incorporating pseudo-second-order kinetics and transformation reaction kinetics demonstrated that the surface sites of FMC promoted electron transfer process through chemical adsorption and electrostatic attraction. ProtoFit program coupled with characterization methods concluded that Cu-OH was the main reaction site of FMC where the protonated surface favored to generate·O2-. Meanwhile, three metal ions developed simultaneous mediated transformation reactions on TTC in liquid phase, and·O2- induced the production of·OH. The transformed products were subjected to toxicity assessment, which had lost antimicrobial properties toward Escherichia coli. Insights gained from this study can refine the dual mechanisms of multipurpose FMC in solid and liquid phases underlying TTC transformation.
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Affiliation(s)
- Wei Chen
- College of Civil Engineering, Sichuan Agricultural University, Chengdu 611830, China; Sichuan Higher Education Engineering Research Center for Disaster Prevention and Mitigation of Village Construction, Sichuan Agricultural University, Chengdu 611830, China
| | - Zhujun Liu
- College of Civil Engineering, Sichuan Agricultural University, Chengdu 611830, China.
| | - Xinning Dai
- College of Civil Engineering, Sichuan Agricultural University, Chengdu 611830, China
| | - Zhihan Zhao
- College of Civil Engineering, Sichuan Agricultural University, Chengdu 611830, China
| | - Bin Du
- Students Innovation and Entrepreneurship Center, Enrollment and Employment Department, Sichuan Agricultural University, Chengdu 611130, China
| | - Ke Zhang
- College of Civil Engineering, Sichuan Agricultural University, Chengdu 611830, China; Sichuan Higher Education Engineering Research Center for Disaster Prevention and Mitigation of Village Construction, Sichuan Agricultural University, Chengdu 611830, China
| | - Dandan Ma
- College of Civil Engineering, Sichuan Agricultural University, Chengdu 611830, China; Sichuan Higher Education Engineering Research Center for Disaster Prevention and Mitigation of Village Construction, Sichuan Agricultural University, Chengdu 611830, China
| | - Liangqian Fan
- College of Civil Engineering, Sichuan Agricultural University, Chengdu 611830, China; Sichuan Higher Education Engineering Research Center for Disaster Prevention and Mitigation of Village Construction, Sichuan Agricultural University, Chengdu 611830, China
| | - Xianbin Huang
- College of Civil Engineering, Sichuan Agricultural University, Chengdu 611830, China; Sichuan Higher Education Engineering Research Center for Disaster Prevention and Mitigation of Village Construction, Sichuan Agricultural University, Chengdu 611830, China.
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6
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Ingle AA, Ansari SZ, Shende DZ, Wasewar KL, Pandit AB. Progress and prospective of heterogeneous catalysts for H 2O 2 production via anthraquinone process. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:86468-86484. [PMID: 35710969 PMCID: PMC9203146 DOI: 10.1007/s11356-022-21354-z] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/04/2022] [Accepted: 06/04/2022] [Indexed: 04/16/2023]
Abstract
This paper reviews the improvement in the field of catalytic hydrogenation of 2-ethylanthraquinone to 2-ethylanthrahydroquinone for the successful production of hydrogen peroxide. Hydrogen peroxide is being used in almost all industrial areas, particularly in the chemical industry and in environmental protection, as the most promising oxidant for cleaner and environmentally safer processes. A variety of hydrogenation catalysts have been introduced for hydrogenation of 2-ethylanthraquinone in the production of hydrogen peroxide via anthraquinone (AQ) process. The aim of the present study is to describe the catalysts used in the hydrogenation of 2-ethylanthraquinone and the reaction mechanism involved with different catalytic systems. The hydrogenation of 2-ethylanthraquinone using metals, alloy, bimetallic composite, and supported metal catalyst with the structural modifications has been incorporated for the production of hydrogen peroxide. The comprehensive comparison reveals that the supported metal catalysts required lesser catalyst amount, produced lower AQ decay, and provided higher catalyst activity and selectivity. Furthermore, the replacement of conventional catalysts by metal and metal alloy-supported catalyst rises as a hydrogenation trend, enhancing by several times the catalytic performance.
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Affiliation(s)
- Anjali A. Ingle
- Advanced Separation and Analytical Laboratory (ASAL), Department of Chemical Engineering, Visvesvaraya National Institute of Technology, Nagpur, Maharashtra 440010 India
| | - Shahid Z. Ansari
- Department of Chemical Engineering, Institute of Chemical Technology (ICT), Mumbai, Maharashtra 400019 India
| | - Diwakar Z. Shende
- Advanced Separation and Analytical Laboratory (ASAL), Department of Chemical Engineering, Visvesvaraya National Institute of Technology, Nagpur, Maharashtra 440010 India
| | - Kailas L. Wasewar
- Advanced Separation and Analytical Laboratory (ASAL), Department of Chemical Engineering, Visvesvaraya National Institute of Technology, Nagpur, Maharashtra 440010 India
| | - Aniruddha B. Pandit
- Department of Chemical Engineering, Institute of Chemical Technology (ICT), Mumbai, Maharashtra 400019 India
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7
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Fasna PHF, Sasi S, Sharmila TKB, Chandra CSJ, Antony JV, Raman V. Photocatalytic remediation of methylene blue and antibacterial activity study using Schiff base-Cu complexes. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:54318-54329. [PMID: 35296999 DOI: 10.1007/s11356-022-19694-x] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/01/2021] [Accepted: 03/09/2022] [Indexed: 06/14/2023]
Abstract
This work describes the design of novel Cu(II) complexes and their application in the photocatalytic degradation of methylene blue (MB). The same photocatalyst exhibits antibacterial activity against Escherichia coli (gram-negative) and Bacillus circulans (gram-positive). The characterisation of the photocatalysts has been done by several up-to-date physical methods. The rationale behind the photocatalysts' beneficial intervention is discussed in this study. Statistical analysis of the degradation of MB is done using a one-way ANOVA, and the significance of means is determined by a multiple comparison test using Turkey HSD. Also, the degradation of MB follows pseudo first-order kinetics with high correlation coefficient values (R2 > 0.95), making them useful as simple and low-cost organic dye degradation agents.
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Affiliation(s)
- P H Fathima Fasna
- Department of Chemistry, Maharaja's College, Park Avenue Road, Ernakulam, Kerala, 682011, India
| | - Sreesha Sasi
- Department of Chemistry, Maharaja's College, Park Avenue Road, Ernakulam, Kerala, 682011, India.
| | - T K Bindu Sharmila
- Department of Chemistry, Maharaja's College, Park Avenue Road, Ernakulam, Kerala, 682011, India
| | - C S Julie Chandra
- Department of Chemistry, Maharaja's College, Park Avenue Road, Ernakulam, Kerala, 682011, India
| | - Jolly V Antony
- Department of Chemistry, Maharaja's College, Park Avenue Road, Ernakulam, Kerala, 682011, India
| | - Vidya Raman
- Department of Chemistry, TMJM Government College, Kerala, Manimalakunnu Koothattukulam, India
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8
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Liang YC, Li TH. Sputtering-Assisted Synthesis of Copper Oxide–Titanium Oxide Nanorods and Their Photoactive Performances. NANOMATERIALS 2022; 12:nano12152634. [PMID: 35957065 PMCID: PMC9370441 DOI: 10.3390/nano12152634] [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: 07/08/2022] [Revised: 07/21/2022] [Accepted: 07/28/2022] [Indexed: 12/10/2022]
Abstract
A TiO2 nanorod template was successfully decorated with a copper oxide layer with various crystallographic phases using sputtering and postannealing procedures. The crystallographic phase of the layer attached to the TiO2 was adjusted from a single Cu2O phase or dual Cu2O–CuO phase to a single CuO phase by changing the postannealing temperature from 200 °C to 400 °C. The decoration of the TiO2 (TC) with a copper oxide layer improved the light absorption and photoinduced charge separation abilities. These factors resulted in the composite nanorods demonstrating enhanced photoactivity compared to that of the pristine TiO2. The ternary phase composition of TC350 allowed it to achieve superior photoactive performance compared to the other composite nanorods. The possible Z-scheme carrier movement mechanism and the larger granular size of the attached layer of TC350 under irradiation accounted for the superior photocatalytic activity in the degradation of RhB dyes.
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9
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Fu D, Kurniawan TA, Gui H, Li H, Feng S, Li Q, Wang Y. Role of Cu xO-Anchored Pyrolyzed Hydrochars on H 2O 2-Activated Degradation of Tetracycline: Effects of Pyrolysis Temperature and pH. Ind Eng Chem Res 2022. [DOI: 10.1021/acs.iecr.2c01100] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Dun Fu
- Key Laboratory for Chemical Biology of Fujian Province, Department of Chemical and Biochemical Engineering, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, P. R. China
- Key Laboratory of Mine Water Resource Utilization of Anhui Higher Education Institutes, Suzhou University, Suzhou 234000, P. R. China
| | - Tonni Agustiono Kurniawan
- Key Laboratory for Chemical Biology of Fujian Province, Department of Chemical and Biochemical Engineering, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, P. R. China
| | - Herong Gui
- Key Laboratory of Mine Water Resource Utilization of Anhui Higher Education Institutes, Suzhou University, Suzhou 234000, P. R. China
| | - Heng Li
- Key Laboratory for Chemical Biology of Fujian Province, Department of Chemical and Biochemical Engineering, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, P. R. China
| | - Songbao Feng
- Key Laboratory of Mine Water Resource Utilization of Anhui Higher Education Institutes, Suzhou University, Suzhou 234000, P. R. China
| | - Qingbiao Li
- Key Laboratory for Chemical Biology of Fujian Province, Department of Chemical and Biochemical Engineering, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, P. R. China
- College of Food and Biology Engineering, Jimei University, Xiamen 361021, P. R. China
| | - Yuanpeng Wang
- Key Laboratory for Chemical Biology of Fujian Province, Department of Chemical and Biochemical Engineering, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, P. R. China
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10
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Role of MoS2/rGO co-catalyst to enhance the activity and stability of Cu2O as photocatalyst towards photoelectrochemical water splitting. J Photochem Photobiol A Chem 2022. [DOI: 10.1016/j.jphotochem.2021.113622] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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11
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Yao G, Shao X, Qiu Z, Qiu F, Li Z, Zhang T. Construction of lignin-based nano-adsorbents for efficient and selective recovery of tellurium (IV) from wastewater. CHEMOSPHERE 2022; 287:132058. [PMID: 34474381 DOI: 10.1016/j.chemosphere.2021.132058] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/05/2021] [Revised: 08/23/2021] [Accepted: 08/25/2021] [Indexed: 06/13/2023]
Abstract
Tellurium is massively used as the main light-absorbing layer component in the manufacturing of CdTe thin-film solar cells, a critical component in the photovoltaic industry. However, the process of manufacturing and renewing components has produced large amounts of tellurium-containing wastewater that is difficult to degrade and poses a serious threat to the aquatic ecosystem and human health. Hence, to achieve the recovery of tellurium resources for reducing their damages, a win-win approach was employed to utilize waste lignin to construct functional copper-doped activated lignin (CAL) adsorbents for selective separation and recovery of tellurium from wastewater. CAL exhibited superior adsorption properties towards tellurium (248.45 mg/g), mainly attributed to the adsorption mechanism of coordination interactions. Kinetic and isotherm results elucidated that monolayer chemisorption dominated CAL adsorption process. Besides, CAL had a satisfactory regeneration capability with minimal loss adsorption capacity after six consecutive cycles, which also exhibited high antifouling properties. Meanwhile, CAL achieved high selectivity for tellurium adsorption under the simulated wastewater, revealing the potential of CAL for practical application in wastewater. Therefore, this work provides a promising environmental strategy for exploring the application of lignin-based materials for tellurium recovery from wastewater.
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Affiliation(s)
- Guanglei Yao
- School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang, 212013, China
| | - Xue Shao
- School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang, 212013, China
| | - Zhiwei Qiu
- School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang, 212013, China
| | - Fengxian Qiu
- School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang, 212013, China.
| | - Zhangdi Li
- School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang, 212013, China
| | - Tao Zhang
- School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang, 212013, China; Institute of Green Chemistry and Chemical Technology, 301 Xuefu Road, Zhenjiang, 212013, Jiangsu Province, China.
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12
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Cao X, Guan Y, Hu Y, Liu W, Zuo S, Yao C, Wu F. Mace‐Shaped Cu
7
S
4
NW/ECF Composites for Photocatalytic Degradation of Antibiotics. ChemistrySelect 2021. [DOI: 10.1002/slct.202101691] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Xiaoman Cao
- Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology School of Petrochemical Engineering Changzhou University Changzhou 213164 China
| | - Yiyin Guan
- Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology School of Petrochemical Engineering Changzhou University Changzhou 213164 China
| | - Yuhui Hu
- Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology School of Petrochemical Engineering Changzhou University Changzhou 213164 China
| | - Wenjie Liu
- Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology School of Petrochemical Engineering Changzhou University Changzhou 213164 China
| | - Shixiang Zuo
- Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology School of Petrochemical Engineering Changzhou University Changzhou 213164 China
| | - Chao Yao
- Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology School of Petrochemical Engineering Changzhou University Changzhou 213164 China
| | - Fengqin Wu
- Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology School of Petrochemical Engineering Changzhou University Changzhou 213164 China
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13
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Singh J, Juneja S, Soni R, Bhattacharya J. Sunlight mediated enhanced photocatalytic activity of TiO2 nanoparticles functionalized CuO-Cu2O nanorods for removal of methylene blue and oxytetracycline hydrochloride. J Colloid Interface Sci 2021; 590:60-71. [DOI: 10.1016/j.jcis.2021.01.022] [Citation(s) in RCA: 48] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2020] [Revised: 01/07/2021] [Accepted: 01/09/2021] [Indexed: 01/10/2023]
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14
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Photocatalytic degradation of organic dye and phytohormone by a Cu(II) complex powder catalyst with added H2O2. Colloids Surf A Physicochem Eng Asp 2020. [DOI: 10.1016/j.colsurfa.2020.125147] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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15
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Ag- or Cu-modified geopolymer filters for water treatment manufactured by 3D printing, direct foaming, or granulation. Sci Rep 2020; 10:7233. [PMID: 32350343 PMCID: PMC7190745 DOI: 10.1038/s41598-020-64228-5] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2020] [Accepted: 04/14/2020] [Indexed: 11/18/2022] Open
Abstract
In this work, we compared the main characteristics of highly porous geopolymer components for water treatment applications manufactured by 3D printing, direct foaming, or granulation. Furthermore, different approaches to impregnate the materials with Ag or Cu were evaluated to obtain filters with disinfecting or catalytic properties. The results revealed that all of the investigated manufacturing methods enabled the fabrication of components that possessed mesoporosity, suitable mechanical strength, and water permeability, even though their morphologies were completely different. Total porosity and compressive strength values were 28 vol% and 16 MPa for 3D-printed, 70–79 vol% and 1 MPa for direct-foamed, and 27 vol% and 10 MPa for granule samples. Both the filter preparation and the metal impregnation method affected the amount, oxidation state, and stability of Ag and Cu in the filters. However, it was possible to prepare filters with low metal leaching between a pH of 3–7, so that the released Ag and Cu concentrations were within drinking water standards.
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Al-Mayalee KH, Badraddin E, Watanabe F, Karabacak T. CuO/Cu core/shell nanostructured photoconductive devices by hot water treatment and high pressure sputtering techniques. NANOTECHNOLOGY 2020; 31:095204. [PMID: 31739297 DOI: 10.1088/1361-6528/ab5889] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
This work demonstrates the fabrication of simple photoconductive devices based on CuO/Cu core/shell nanostructured heterojunction that performs notable photocurrent response. Copper oxide (CuO) nanoleaf structures (NLs) have been successfully grown on ITO-coated glass substrate via a simple hot water treatment (HWT) method. A conformal Cu shell was fabricated by high pressure sputtered (HIPS) deposition technique on the CuO nanoleaves to produce NLs-core/metal shell photoconductive devices. For comparison, CuO thin film (TF) was prepared by the thermal oxidation method to manufacture the conventional planar thin film devices. Results showed that the HWT method resulted in the formation of dense 3D CuO nanoleaves on ITO/glass substrate with a high surface area. CuO NLs showed higher optical absorption than CuO TF in the ultraviolet and visible spectrum. Further, the optical band gaps of CuO NLs and TF samples have been estimated from Touc's plot to be 1.45 ± 0.10 eV and 1.63 ± 0.20 eV, respectively. Current density-voltage measurements' result revealed that core/shell devices have superior photocurrent response compared to TF devices. The average photocurrent density at zero-bias for the NLs devices was 23.5 ± 2.0 μA cm-2 and for TF devices was 6.7 ± 1.0 μA cm-2. Besides, NLs core/shell photoconductive devices exhibit a remarkable increase in photocurrent response values with increasing bias voltage compared to the increased values in TF devices. The results demonstrate that the devices based on HWT-NLs-core/HIPS-shell design showed a significant enhancement on the photoconductivity response compared with the conventional TF design. The performance enhancement can be attributed to improving light trapping, photocarriers generation-recombination times and carrier collection by introducing an alternative radial interface in core/shell design. Also, HWT CuO NLs geometry feature with the high surface area has worked to enhance light absorption that enables the design of high efficiency, functional and commercial photoconductive detectors.
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Affiliation(s)
- Khalidah H Al-Mayalee
- Department of Physics and Astronomy, University of Arkansas at Little Rock, Little Rock, AR 72204, United States of America. Physics Department, Faculty of Education for Women, University of Kufa, Najaf, Iraq
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Verma A, Kumar S, Chang WK, Fu YP. Bi-functional Ag-Cu xO/g-C 3N 4 hybrid catalysts for the reduction of 4-nitrophenol and the electrochemical detection of dopamine. Dalton Trans 2020; 49:625-637. [PMID: 31859301 DOI: 10.1039/c9dt04309h] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The immense need to build highly efficient catalysts has always been at the forefront of environmental remediation research. Herein, we have synthesized dual-phase copper oxide containing Cu2O and CuO originating from the same reaction using hexamethyltetramine (HMT). Simultaneously, we coupled it with g-C3N4 (g-CN), constructing a triple synergetic heterojunction, which is reported significantly less often in the literature. Hydrothermal reactions led to the formation of various catalysts, namely, Ag-Cu2O-CuO-gCN (ACCG), Ag-CuO-gCN (ACG), Ag-Cu2O-CuO (ACC) and Ag-CuO (AC), which were thoroughly characterized via XRD and FESEM to gain structural, crystallographic and morphological insights. We clearly observed the pure phase formation of the catalysts and the development of sheet-like CuO and truncated octahedrons of Cu2O fused together within the g-CN framework. Also, XPS studies revealed the presence of copper in two different oxidation states, namely, Cu2+ and Cu+. BET analysis was performed to analyze the surface area and pore volume of the catalysts, which play very significant roles in catalytic reduction. The catalytic efficiencies of the catalysts were evaluated via the reduction of 100 ppm 4-nitrophenol (4-NP) to 4-aminophenol (4-AP) without using any light irradiation. The most efficient catalyst was ACCG, revealing the reduction of 4-NP in 4 minutes. Both Cu2O and g-CN played significant roles in reduction, following zero-order kinetics, unlike that which is often reported in the literature. We also evaluated the catalytic reduction with different concentrations of 4-NP and tuning the catalyst amount as well. A mechanism was postulated based on the XRD results of the post-catalytic reduction catalyst. The ACCG catalyst was also successfully tested as an effective dopamine sensor. The GC/ACCG electrode exhibited oxidation peak current density of 0.28 mA cm-2, which was much higher than those of the other catalysts. This unique combination of pure phase materials to form a composite as an effective catalyst as well as a sensor is an exclusive effort towards environmental remediation.
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Affiliation(s)
- Atul Verma
- Department of Materials Science and Engineering, National Dong Hwa University, Hualien 97401, Taiwan.
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18
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Jiang Q, Jiang J, Deng R, Xie X, Meng J. Controllable preparation of CuO/Cu 2O composite particles with enhanced photocatalytic performance. NEW J CHEM 2020. [DOI: 10.1039/d0nj00090f] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Spherical CuO/Cu2O nanocomposites synthesized in PEG-400 have excellent catalytic activity because of transferring photogenerated electrons from Cu2O to CuO.
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Affiliation(s)
- Qing Jiang
- Department of Chemistry
- Jinan University
- Guangzhou 510632
- China
| | - Jiajie Jiang
- Department of Chemistry
- Jinan University
- Guangzhou 510632
- China
| | - Runkang Deng
- Department of Chemistry
- Jinan University
- Guangzhou 510632
- China
| | - Xinyuan Xie
- Department of Chemistry
- Jinan University
- Guangzhou 510632
- China
| | - Jianxin Meng
- Department of Chemistry
- Jinan University
- Guangzhou 510632
- China
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19
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Singh RP, Arora P, Nellaiappan S, Shivakumara C, Irusta S, Paliwal M, Sharma S. Electrochemical insights into layered La2CuO4 perovskite: Active ionic copper for selective CO2 electroreduction at low overpotential. Electrochim Acta 2019. [DOI: 10.1016/j.electacta.2019.134952] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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20
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Recent Strategies for Hydrogen Peroxide Production by Metal-Free Carbon Nitride Photocatalysts. Catalysts 2019. [DOI: 10.3390/catal9120990] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Hydrogen peroxide (H2O2) is a chemical which has gained wide importance in several industrial and research fields. Its mass production is mostly performed by the anthraquinone (AQ) oxidation reaction, leading to high energy consumption and significant generation of wastes. Other methods of synthesis found in the literature include the direct synthesis from oxygen and hydrogen. However, this H2O2 production process is prone to explosion hazard or undesirable by‑product generation. With the growing demand of H2O2, the development of cleaner and economically viable processes has been under intense investigation. Heterogeneous photocatalysis for H2O2 production has appeared as a promising alternative since it requires only an optical semiconductor, water, oxygen, and ideally solar light irradiation. Moreover, employing a metal-free semiconductor minimizes possible toxicity consequences and reinforces the sustainability of the process. The most studied metal‑free catalyst employed for H2O2 production is polymeric carbon nitride (CN). Several chemical and physical modifications over CN have been investigated together with the assessment of different sacrificial agents and light sources. This review shows the recent developments on CN materials design for enhancing the synthesis of H2O2, along with the proposed mechanisms of H2O2 production. Finally, the direct in situ generation of H2O2, when dealing with the photocatalytic synthesis of added-value organic compounds and water treatment, is discussed.
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21
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Saputera WH, Tahini HA, Lovell EC, Tan TH, Rawal A, Aguey-Zinsou KF, Friedmann D, Smith SC, Amal R, Scott J. Cooperative defect-enriched SiO2 for oxygen activation and organic dehydrogenation. J Catal 2019. [DOI: 10.1016/j.jcat.2019.07.006] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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22
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Razmara Z, Poorsargol M. Ultrasonic‐assisted synthesis of supramolecular copper (II) complex a precursor for the preparation of octahedron Cu
2
O nanoparticles applicable in the adsorption and photodegradation of Rhodamine B. Appl Organomet Chem 2019. [DOI: 10.1002/aoc.5084] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Zohreh Razmara
- Department of ChemistryUniversity of Zabol P.O. Box 98613‐35856 Zabol Iran
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23
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Xue J, Yang L, Wang H, Yan T, Fan D, Feng R, Du B, Wei Q, Ju H. Quench-type electrochemiluminescence immunosensor for detection of amyloid β-protein based on resonance energy transfer from luminol@SnS2-Pd to Cu doped WO3 nanoparticles. Biosens Bioelectron 2019; 133:192-198. [DOI: 10.1016/j.bios.2019.03.035] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2019] [Revised: 03/16/2019] [Accepted: 03/18/2019] [Indexed: 12/22/2022]
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24
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The study of Fe-doped CdS nanoparticle-assisted photocatalytic degradation of organic dye in wastewater. APPLIED NANOSCIENCE 2019. [DOI: 10.1007/s13204-018-0933-3] [Citation(s) in RCA: 37] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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25
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Sahoo RK, Das A, Samantaray K, Singh SK, Mane RS, Shin HC, Yun JM, Kim KH. Electrochemical glucose sensing characteristics of two-dimensional faceted and non-faceted CuO nanoribbons. CrystEngComm 2019. [DOI: 10.1039/c8ce02033g] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We present faceted and non-faceted crystal cupric oxide (CuO) nanoribbons synthesized by different processes for glucose-sensing applications.
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Affiliation(s)
- Rakesh K. Sahoo
- Global Frontier R&D Center for Hybrid Interface Materials
- Pusan National University
- Busan 609-735
- Republic of Korea
| | - Arya Das
- CSIR-Institute of Minerals and Materials Technology
- Bhubaneswar-751013
- India
| | - Koyel Samantaray
- Department of Physics
- National Institute of Technology
- Rourkela
- India
| | - Saroj K. Singh
- CSIR-Institute of Minerals and Materials Technology
- Bhubaneswar-751013
- India
| | - Rajaram S. Mane
- Department of Materials Science and Engineering
- Pusan National University
- Busan 609-735
- Republic of Korea
| | - Heon-Cheol Shin
- Department of Materials Science and Engineering
- Pusan National University
- Busan 609-735
- Republic of Korea
| | - Je Moon Yun
- Global Frontier R&D Center for Hybrid Interface Materials
- Pusan National University
- Busan 609-735
- Republic of Korea
| | - Kwang Ho Kim
- Global Frontier R&D Center for Hybrid Interface Materials
- Pusan National University
- Busan 609-735
- Republic of Korea
- Department of Materials Science and Engineering
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Abstract
TiO2 photocatalysts are limited to ultraviolet light photo-activation, however, by coupling with NaYF4:(Yb,Er) they can utilize visible light activation, but with low efficiencies. In order to enhance visible light photo-activity, CuO nanoparticles were coupled with NaYF4:(Yb,Er) by mechanical ball-milling and coated with TiO2-sol. The coupling of CuO nanoparticles with NaYF4:(Yb,Er)/TiO2 caused the formation of a NaYF4:(Yb,Er)-CuO/TiO2 composite capable of visible absorption with a remarkably reduced band gap of ~2.5 eV. The NaYF4:(Yb,Er)-CuO/TiO2 composite in H2O2 showed the most efficient methylene blue (MB) degradation efficiency of more than 99.5% after exposure to visible light.
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Yu X, Kou S, Zhang J, Tang X, Yang Q, Yao B. Preparation and characterization of Cu 2O nano-particles and their photocatalytic degradation of fluroxypyr. ENVIRONMENTAL TECHNOLOGY 2018; 39:2967-2976. [PMID: 28825365 DOI: 10.1080/09593330.2017.1370023] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Cu2O nano-particles were prepared by the liquid-phase reduction method and the effect of the dispersant was studied. The microstructure, surface morphology and optical properties of Cu2O nano-particles were characterized by X-ray diffractometer, X-ray photoelectron spectroscopy, nitrogen static adsorption, scanning electron microscope, particle size analysis, ultraviolet visible light spectrophotometer and photoluminescence spectrometer. The photocatalytic degradation of fluroxypyr using Cu2O was studied by the response surface methodology, and the quadratic multinomial mathematical model was established. The results indicated that the Cu2O crystal particles prepared using the dispersant of polyvinylpyrrolidone were of high purity with the preferential orientation of (111). The average particle size was 605.4 ± 124.8 nm, the specific surface area was 22.641 m2/g, the band gap was approximately 2.04 eV and the absorption edge was about 650 nm. R2 of the established quadratic model was 0.9973 and had good fitness, indicating that the established model was reliable. The optimal degradation conditions were obtained as follows: the initial concentration of fluroxypyr was 11.17 mg/L, the pH of the solution was 12.0 and the H2O2 concentration was 15 mg/L. The degradation rate of fluroxypyr could reach 83.2% and the relative error was 1.20%. After nine times of recycling, more than 75% of fluroxypyr could be degraded.
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Affiliation(s)
- Xiaojiao Yu
- a School of Science , Xi'an University of Technology , Xi'an , People's Republic of China
| | - Song Kou
- a School of Science , Xi'an University of Technology , Xi'an , People's Republic of China
| | - Jie Zhang
- a School of Science , Xi'an University of Technology , Xi'an , People's Republic of China
| | - Xiyan Tang
- a School of Science , Xi'an University of Technology , Xi'an , People's Republic of China
| | - Qian Yang
- a School of Science , Xi'an University of Technology , Xi'an , People's Republic of China
| | - Binghua Yao
- a School of Science , Xi'an University of Technology , Xi'an , People's Republic of China
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28
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Membrane enhanced COD degradation of pulp wastewater using Cu2O/H2O2 heterogeneous Fenton process. Chin J Chem Eng 2018. [DOI: 10.1016/j.cjche.2018.01.007] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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29
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A facile synthesis of CNTs/Cu2O-CuO heterostructure composites by spray pyrolysis and its visible light responding photocatalytic properties. ADV POWDER TECHNOL 2018. [DOI: 10.1016/j.apt.2018.05.009] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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30
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Synergistic Effect of Cu2O and Urea as Modifiers of TiO2 for Enhanced Visible Light Activity. Catalysts 2018. [DOI: 10.3390/catal8060240] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023] Open
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31
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Gong S, Wu X, Zhang J, Han N, Chen Y. Facile solution synthesis of Cu2O–CuO–Cu(OH)2 hierarchical nanostructures for effective catalytic ozone decomposition. CrystEngComm 2018. [DOI: 10.1039/c8ce00203g] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Cu-Based catalysts obtained at different reaction time present various morphologies, chemical compositions and ozone decomposition activities.
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Affiliation(s)
- Shuyan Gong
- State Key Laboratory of Multiphase Complex Systems
- Institute of Process Engineering, Chinese Academy of Sciences
- Beijing 100190
- P. R. China
- University of Chinese Academy of Sciences
| | - Xiaofeng Wu
- State Key Laboratory of Multiphase Complex Systems
- Institute of Process Engineering, Chinese Academy of Sciences
- Beijing 100190
- P. R. China
| | - Jilai Zhang
- State Key Laboratory of Multiphase Complex Systems
- Institute of Process Engineering, Chinese Academy of Sciences
- Beijing 100190
- P. R. China
| | - Ning Han
- State Key Laboratory of Multiphase Complex Systems
- Institute of Process Engineering, Chinese Academy of Sciences
- Beijing 100190
- P. R. China
- Center for Excellence in Regional Atmospheric Environment
| | - Yunfa Chen
- State Key Laboratory of Multiphase Complex Systems
- Institute of Process Engineering, Chinese Academy of Sciences
- Beijing 100190
- P. R. China
- Center for Excellence in Regional Atmospheric Environment
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32
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Zhu Y, Xu Z, Yan K, Zhao H, Zhang J. One-Step Synthesis of CuO-Cu 2O Heterojunction by Flame Spray Pyrolysis for Cathodic Photoelectrochemical Sensing of l-Cysteine. ACS APPLIED MATERIALS & INTERFACES 2017; 9:40452-40460. [PMID: 29111634 DOI: 10.1021/acsami.7b13020] [Citation(s) in RCA: 60] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
CuO-Cu2O heterojunction was synthesized via a one-step flame spray pyrolysis (FSP) process and employed as photoactive material in construction of a photoelectrochemical (PEC) sensing device. The surface analysis showed that CuO-Cu2O nanocomposites in the size less than 10 nm were formed and uniformly distributed on the electrode surface. Under visible light irradiation, the CuO-Cu2O-coated electrode exhibited admirable cathodic photocurrent response, owing to the favorable property of the CuO-Cu2O heterojunction such as strong absorption in the visible region and effective separation of photogenerated electron-hole pairs. On the basis of the interaction of l-cysteine (l-Cys) with Cu-containing compounds via the formation of Cu-S bond, the CuO-Cu2O was proposed as a PEC sensor for l-Cys detection. A declined photocurrent response of CuO-Cu2O to addition of l-Cys was observed. Influence factors including CuO-Cu2O concentration, coating amount of CuO-Cu2O, and applied bias potential on the PEC response toward l-Cys were optimized. Under optimum conditions, the photocurrent of the proposed sensor was linearly declined with increasing the concentration of l-Cys from 0.2 to 10 μM, with a detection limit (3S/N) of 0.05 μM. Moreover, this PEC sensor displayed high selectivity, reproducibility, and stability. The potential applicability of the proposed PEC sensor was assessed in human urine samples.
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Affiliation(s)
- Yuhan Zhu
- Key Laboratory of Material Chemistry for Energy Conversion and Storage (Ministry of Education), School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology , Luoyu Road 1037, Wuhan 430074, P.R. China
| | - Zuwei Xu
- State Key Laboratory of Coal Combustion, School of Energy and Power Engineering, Huazhong University of Science and Technology , Luoyu Road 1037, Wuhan 430074, P.R. China
| | - Kai Yan
- Key Laboratory of Material Chemistry for Energy Conversion and Storage (Ministry of Education), School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology , Luoyu Road 1037, Wuhan 430074, P.R. China
| | - Haibo Zhao
- State Key Laboratory of Coal Combustion, School of Energy and Power Engineering, Huazhong University of Science and Technology , Luoyu Road 1037, Wuhan 430074, P.R. China
| | - Jingdong Zhang
- Key Laboratory of Material Chemistry for Energy Conversion and Storage (Ministry of Education), School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology , Luoyu Road 1037, Wuhan 430074, P.R. China
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33
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On the Origin of Enhanced Photocatalytic Activity of Copper-Modified Titania in the Oxidative Reaction Systems. Catalysts 2017. [DOI: 10.3390/catal7110317] [Citation(s) in RCA: 140] [Impact Index Per Article: 20.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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34
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Deng X, Wang C, Yang H, Shao M, Zhang S, Wang X, Ding M, Huang J, Xu X. One-pot hydrothermal synthesis of CdS decorated CuS microflower-like structures for enhanced photocatalytic properties. Sci Rep 2017; 7:3877. [PMID: 28634397 PMCID: PMC5478623 DOI: 10.1038/s41598-017-04270-y] [Citation(s) in RCA: 42] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2017] [Accepted: 05/10/2017] [Indexed: 11/09/2022] Open
Abstract
CdS decorated CuS structures have been controllably synthesized through a one-pot hydrothermal method. The morphologies and compositions of the as-prepared samples could be concurrently well controlled by simply tuning the amount of CdCl2 and thiourea. Using this strategy, the morphology of the products experienced from messy to flower-like morphologies with multiple porous densities, together with the phase evolution from pure CuS to the CdS/CuS composites. Serving as a photocatalyst, the samples synthesized with the addition of 1 mmol cadmium chloride and 3 mmol thiourea during synthetic process, showed the best photocatalytic activity, which could reach a maximum photocatalytic efficiency of 93% for methyl orange (MO) photodegradation after 150 min. The possible mechanism for the high photocatalytic efficiency of the sample was proposed by investigating the composition, surface area, structure, and morphology before and after photocatalytic reaction.
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Affiliation(s)
- Xiaolong Deng
- School of Physics and Technology, University of Jinan, 336 Nanxin Zhuang West Road, Jinan, 250022, Shandong Province, People's Republic of China
| | - Chenggang Wang
- School of Physics and Technology, University of Jinan, 336 Nanxin Zhuang West Road, Jinan, 250022, Shandong Province, People's Republic of China
| | - Hongcen Yang
- School of Physics and Technology, University of Jinan, 336 Nanxin Zhuang West Road, Jinan, 250022, Shandong Province, People's Republic of China
| | - Minghui Shao
- School of Physics and Technology, University of Jinan, 336 Nanxin Zhuang West Road, Jinan, 250022, Shandong Province, People's Republic of China
| | - Shouwei Zhang
- School of Physics and Technology, University of Jinan, 336 Nanxin Zhuang West Road, Jinan, 250022, Shandong Province, People's Republic of China
| | - Xiao Wang
- School of Physics and Technology, University of Jinan, 336 Nanxin Zhuang West Road, Jinan, 250022, Shandong Province, People's Republic of China
| | - Meng Ding
- School of Physics and Technology, University of Jinan, 336 Nanxin Zhuang West Road, Jinan, 250022, Shandong Province, People's Republic of China
| | - Jinzhao Huang
- School of Physics and Technology, University of Jinan, 336 Nanxin Zhuang West Road, Jinan, 250022, Shandong Province, People's Republic of China.
| | - Xijin Xu
- School of Physics and Technology, University of Jinan, 336 Nanxin Zhuang West Road, Jinan, 250022, Shandong Province, People's Republic of China.
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Lakhotiya G, Bajaj S, Nayak AK, Pradhan D, Tekade P, Rana A. Enhanced catalytic activity without the use of an external light source using microwave-synthesized CuO nanopetals. BEILSTEIN JOURNAL OF NANOTECHNOLOGY 2017; 8:1167-1173. [PMID: 28685117 PMCID: PMC5480358 DOI: 10.3762/bjnano.8.118] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/06/2017] [Accepted: 04/25/2017] [Indexed: 06/07/2023]
Abstract
We report enhanced catalytic activity of CuO nanopetals synthesized by microwave-assisted wet chemical synthesis. The catalytic reaction of CuO nanopetals and H2O2 was studied with the application of external light source and also under dark conditions for the degradation of the hazardous dye methylene blue. The CuO nanopetals showed significant catalytic activity for the fast degradation of methylene blue and rhodamine B (RhB) under dark conditions, without the application of an external light source. This increased catalytic activity was attributed to the co-operative role of H2O2 and the large specific surface area (≈40 m2·g-1) of the nanopetals. We propose a detail mechanism for this fast degradation. A separate study of the effect of different H2O2 concentrations for the degradation of methylene blue under dark conditions is also illustrated.
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Affiliation(s)
- Govinda Lakhotiya
- Material Science Center, Indian Institute of Technology Kharagpur, Kharagpur-721302, W.B., India
- Jankidevi Bajaj College of Science, Wardha-442001, M.S., India
| | - Sonal Bajaj
- Jankidevi Bajaj College of Science, Wardha-442001, M.S., India
| | - Arpan Kumar Nayak
- Material Science Center, Indian Institute of Technology Kharagpur, Kharagpur-721302, W.B., India
| | - Debabrata Pradhan
- Material Science Center, Indian Institute of Technology Kharagpur, Kharagpur-721302, W.B., India
| | - Pradip Tekade
- Jankidevi Bajaj College of Science, Wardha-442001, M.S., India
| | - Abhimanyu Rana
- MESA+ Institute for Nanotechnology, University of Twente, 7500 AE, Enschede, Netherlands
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