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Majumder A, Otter P, Röher D, Bhatnagar A, Khalil N, Gupta AK, Bresciani R, Arias CA. Combination of advanced biological systems and photocatalysis for the treatment of real hospital wastewater spiked with carbamazepine: A pilot-scale study. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2024; 351:119672. [PMID: 38042072 DOI: 10.1016/j.jenvman.2023.119672] [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: 08/12/2023] [Revised: 11/18/2023] [Accepted: 11/20/2023] [Indexed: 12/04/2023]
Abstract
Over the past few decades, the increase in dependency on healthcare facilities has led to the generation of large quantities of hospital wastewater (HWW) rich in chemical oxygen demand (COD), total suspended solids (TSS), ammonia, recalcitrant pharmaceutically active compounds (PhACs), and other disease-causing microorganisms. Conventional treatment methods often cannot effectively remove the PhACs present in wastewater. Hence, hybrid processes comprising of biological treatment and advanced oxidation processes have been used recently to treat complex wastewater. The current study explores the performance of pilot-scale treatment of real HWW (3000 L/d) spiked with carbamazepine (CBZ) using combinations of moving and stationary bed bio-reactor-sedimentation tank (MBSST), aerated horizontal flow constructed wetland (AHFCW), and photocatalysis. The combination of MBSST and AHFCW could remove 85% COD, 93% TSS, 99% ammonia, and 30% CBZ. However, when the effluent of the AHFCW was subjected to photocatalysis, an enhanced CBZ removal of around 85% was observed. Furthermore, the intermediate products (IPs) formed after the photocatalysis was also less toxic than the IPs formed during the biological processes. The results of this study indicated that the developed pilot-scale treatment unit supplemented with photocatalysis could be used effectively to treat HWW.
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Affiliation(s)
- Abhradeep Majumder
- School of Environmental Science and Engineering, Indian Institute of Technology Kharagpur, Kharagpur, 721302, India
| | | | | | - Amit Bhatnagar
- Department of Separation Science, LUT School of Engineering Science, LUT University, Sammonkatu 12, Mikkeli, FI-50130, Finland
| | - Nadeem Khalil
- Environmental Engineering Section, Department of Civil Engineering Aligarh Muslim University, Aligarh, 202001, India
| | - Ashok Kumar Gupta
- Environmental Engineering Division, Department of Civil Engineering, Indian Institute of Technology Kharagpur, Kharagpur, 721302, India.
| | | | - Carlos A Arias
- Department of Biology, Aquatic Biology, Ole Worms Allé 1, Bldg 1135, Aarhus University, 8000, Aarhus C, Denmark
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Annam Renita A, Sathish S, Kumar PS, Prabu D, Manikandan N, Mohamed Iqbal A, Rajesh G, Rangasamy G. Emerging aspects of metal ions-doped zinc oxide photocatalysts in degradation of organic dyes and pharmaceutical pollutants - A review. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2023; 344:118614. [PMID: 37454449 DOI: 10.1016/j.jenvman.2023.118614] [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: 04/22/2023] [Revised: 07/07/2023] [Accepted: 07/10/2023] [Indexed: 07/18/2023]
Abstract
In recent periods, a broad assortment of continual organic contaminants has been released into our natural water resources. Indeed, it is exceedingly poisonous and perilous to living things; thus, the elimination of these organic pollutants before release into the water bodies is vital. A variety of techniques have been utilized to remove these organic pollutants with advanced oxidation photocatalytic methods with zinc oxide (ZnO) nanoparticles being commonly used as a capable catalyst for contaminated water treatment. Nevertheless, its broad energy gap, which can be only stimulated under an ultraviolet (UV) light source, and high recombination pairs of electrons and holes limit their photocatalytic behaviors. However, numerous methods have been suggested to decrease its energy gap for visible regions. Including, the doping ZnO with metal ions (dopant) can be considered as an effectual route not only the reason for a movement of the absorption edges toward the higher (visible light) region but also to lower the electron-hole pair (e--h+) recombination. This review concentrated on the impact of dissimilar types of metal ions (dopants) on the advancement in the degradation performance of ZnO. So, this work demonstrates a vital review of contemporary attainments in the alteration of ZnO nanoparticles for organic pollutants eliminations. Besides, the effect of doping ions including transition metals, rare earth metals, and metal ions (substitutional and interstitial) concerning numerous types of altered ZnO are summarized. The photodegradation mechanisms for pristine and metal-modified ZnO nanoparticles are also conferred.
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Affiliation(s)
- A Annam Renita
- Department of Chemical Engineering, Sathyabama Institute of Science and Technology, Chennai, 119, India
| | - S Sathish
- Department of Chemical Engineering, Sathyabama Institute of Science and Technology, Chennai, 119, India
| | - P Senthil Kumar
- Department of Chemical Engineering, Sri Sivasubramaniya Nadar College of Engineering, Kalavakkam, 603110, Tamil Nadu, India; Centre of Excellence in Water Research (CEWAR), Sri Sivasubramaniya Nadar College of Engineering, Kalavakkam, 603 110, Tamil Nadu, India; Department of Biotechnology Engineering and Food Technology, Chandigarh University, Mohali 140413, India.
| | - D Prabu
- Department of Chemical Engineering, Sathyabama Institute of Science and Technology, Chennai, 119, India
| | - N Manikandan
- Department of Chemical Engineering, Sathyabama Institute of Science and Technology, Chennai, 119, India
| | - A Mohamed Iqbal
- Department of Chemical Engineering, Sathyabama Institute of Science and Technology, Chennai, 119, India
| | - G Rajesh
- Department of Chemical Engineering, Sri Sivasubramaniya Nadar College of Engineering, Kalavakkam, 603110, Tamil Nadu, India; Centre of Excellence in Water Research (CEWAR), Sri Sivasubramaniya Nadar College of Engineering, Kalavakkam, 603 110, Tamil Nadu, India
| | - Gayathri Rangasamy
- School of Engineering, Lebanese American University, Byblos, Lebanon; Department of Sustainable Engineering, Institute of Biotechnology, Saveetha School of Engineering, SIMATS, Chennai, 602105, India
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Sharma S, Qadir I, Atri AK, Singh S, Manhas U, Singh D. Solvent-Free Combustion-Assisted Synthesis of LaFe 0.5Cr 0.5O 3 Nanostructures for Excellent Photocatalytic Performance toward Water Decontamination: The Effect of Fuel on Structural, Magnetic, and Photocatalytic Properties. ACS OMEGA 2023; 8:555-570. [PMID: 36643435 PMCID: PMC9835188 DOI: 10.1021/acsomega.2c05594] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/30/2022] [Accepted: 12/15/2022] [Indexed: 06/17/2023]
Abstract
The present study reports the synthesis of nanocrystalline LaFe0.5Cr0.5O3 via a solvent-free combustion method using glycine, poly(vinyl alcohol), and urea as fuels, with superior photocatalytic activity. Rietveld refinement and powder X-ray diffraction data of nanomaterials demonstrate the existence of an orthorhombic phase that corresponds to the Pbnm space group. The crystallite size of nanoperovskite samples lies in the range of 20.9-36.4 nm. The Brunauer-Emmett-Teller (BET) surface area of the LaFe0.5Cr0.5O3 fabricated using urea is found to be higher than that of the samples prepared using other fuels. The magnetic measurements of all samples done using a SQUID magnetometer showed a dominant antiferromagnetic character along with some weak ferromagnetic interactions. The optical band gap of all nanosamples lies in the visible range (2-2.6 eV), making them suitable photocatalysts in visible light. Their use as a photocatalyst for the degradation of the rhodamine B dye (model pollutant) is studied, and it has been observed that the catalyst fabricated using urea shows excellent degradation efficiency for rhodamine B, i.e., 99% in 60 min, with high reusability up to five runs. Additionally, the degradation of other organic dyes such as methylene blue, methyl orange, and a mixture of these dyes (rhodamine B + methylene blue + methyl orange) is also investigated with the most active photocatalyst, i.e., LFCO-U, to check its versatility.
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Affiliation(s)
- Shikha Sharma
- Department of Chemistry, University of Jammu, Jammu180006, India
| | - Irfan Qadir
- Department of Chemistry, University of Jammu, Jammu180006, India
| | - Amit Kumar Atri
- Department of Chemistry, University of Jammu, Jammu180006, India
| | - Sumit Singh
- Department of Chemistry, University of Jammu, Jammu180006, India
| | - Ujwal Manhas
- Department of Chemistry, University of Jammu, Jammu180006, India
| | - Devinder Singh
- Department of Chemistry, University of Jammu, Jammu180006, India
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Prabhu S, Daniel Thangadurai T, Indumathi T, Kalugasalam P. Enhanced visible light induced dye degradation and antibacterial activities of ZnO/NiO nanocomposite synthesized using Clitoria ternatea flower extract. INORG CHEM COMMUN 2022. [DOI: 10.1016/j.inoche.2022.110077] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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Hoque MA, Guzman MI, Selegue JP, Gnanamani MK. Chemical State of Potassium on the Surface of Iron Oxides: Effects of Potassium Precursor Concentration and Calcination Temperature. MATERIALS (BASEL, SWITZERLAND) 2022; 15:7378. [PMID: 36295443 PMCID: PMC9610504 DOI: 10.3390/ma15207378] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/14/2022] [Revised: 10/07/2022] [Accepted: 10/19/2022] [Indexed: 06/16/2023]
Abstract
Potassium is used extensively as a promoter with iron catalysts in Fisher-Tropsch synthesis, water-gas shift reactions, steam reforming, and alcohol synthesis. In this paper, the identification of potassium chemical states on the surface of iron catalysts is studied to improve our understanding of the catalytic system. Herein, potassium-doped iron oxide (α-Fe2O3) nanomaterials are synthesized under variable calcination temperatures (400-800 °C) using an incipient wetness impregnation method. The synthesis also varies the content of potassium nitrate deposited on superfine iron oxide with a diameter of 3 nm (Nanocat®) to reach atomic ratios of 100 Fe:x K (x = 0-5). The structure, composition, and properties of the synthesized materials are investigated by X-ray diffraction, differential scanning calorimetry, thermogravimetric analysis, Fourier-transform infrared, Raman spectroscopy, inductively coupled plasma-atomic emission spectroscopy, and X-ray photoelectron spectroscopy, as well as transmission electron microscopy, with energy-dispersive X-ray spectroscopy and selected area electron diffraction. The hematite phase of iron oxide retains its structure up to 700 °C without forming any new mixed phase. For compositions as high as 100 Fe:5 K, potassium nitrate remains stable up to 400 °C, but at 500 °C, it starts to decompose into nitrites and, at only 800 °C, it completely decomposes to potassium oxide (K2O) and a mixed phase, K2Fe22O34. The doping of potassium nitrate on the surface of α-Fe2O3 provides a new material with potential applications in Fisher-Tropsch catalysis, photocatalysis, and photoelectrochemical processes.
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Affiliation(s)
- Md. Ariful Hoque
- Department of Chemistry, University of Kentucky, Lexington, KY 40506, USA
| | - Marcelo I. Guzman
- Department of Chemistry, University of Kentucky, Lexington, KY 40506, USA
| | - John P. Selegue
- Department of Chemistry, University of Kentucky, Lexington, KY 40506, USA
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Majumder A, Gupta AK, Sillanpää M. Insights into kinetics of photocatalytic degradation of neurotoxic carbamazepine using magnetically separable mesoporous Fe3O4 modified Al-doped ZnO: Delineating the degradation pathway, toxicity analysis and application in real hospital wastewater. Colloids Surf A Physicochem Eng Asp 2022. [DOI: 10.1016/j.colsurfa.2022.129250] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Wang L, Huang Z, Yang X, Rogée L, Huang X, Zhang X, Lau SP. Review on optofluidic microreactors for photocatalysis. REV CHEM ENG 2022. [DOI: 10.1515/revce-2021-0068] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
Four interrelated issues have been arising with the development of modern industry, namely environmental pollution, the energy crisis, the greenhouse effect and the global food crisis. Photocatalysis is one of the most promising methods to solve them in the future. To promote high photocatalytic reaction efficiency and utilize solar energy to its fullest, a well-designed photoreactor is vital. Photocatalytic optofluidic microreactors, a promising technology that brings the merits of microfluidics to photocatalysis, offer the advantages of a large surface-to-volume ratio, a short molecular diffusion length and high reaction efficiency, providing a potential method for mitigating the aforementioned crises in the future. Although various photocatalytic optofluidic microreactors have been reported, a comprehensive review of microreactors applied to these four fields is still lacking. In this paper, we review the typical design and development of photocatalytic microreactors in the fields of water purification, water splitting, CO2 fixation and coenzyme regeneration in the past few years. As the most promising tool for solar energy utilization, we believe that the increasing innovation of photocatalytic optofluidic microreactors will drive rapid development of related fields in the future.
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Affiliation(s)
- Lei Wang
- Department of Bioengineering , State Key Laboratory of Biobased Material and Green Papermaking, School of Food Science and Engineering, Qilu University of Technology (Shandong Academy of Sciences) , Jinan 250353 , China
| | - Ziyu Huang
- Department of Bioengineering , State Key Laboratory of Biobased Material and Green Papermaking, School of Food Science and Engineering, Qilu University of Technology (Shandong Academy of Sciences) , Jinan 250353 , China
| | - Xiaohui Yang
- Department of Bioengineering , State Key Laboratory of Biobased Material and Green Papermaking, School of Food Science and Engineering, Qilu University of Technology (Shandong Academy of Sciences) , Jinan 250353 , China
| | - Lukas Rogée
- Department of Applied Physics , The Hong Kong Polytechnic University , Hong Kong , P.R. China
| | - Xiaowen Huang
- Department of Bioengineering , State Key Laboratory of Biobased Material and Green Papermaking, School of Food Science and Engineering, Qilu University of Technology (Shandong Academy of Sciences) , Jinan 250353 , China
| | - Xuming Zhang
- Department of Applied Physics , The Hong Kong Polytechnic University , Hong Kong , P.R. China
| | - Shu Ping Lau
- Department of Applied Physics , The Hong Kong Polytechnic University , Hong Kong , P.R. China
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Ling FWM, Abdulbari HA, Chin SY. Heterogeneous Microfluidic Reactors: A Review and an Insight of Enzymatic Reactions. CHEMBIOENG REVIEWS 2022. [DOI: 10.1002/cben.202100058] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Fiona W. M. Ling
- Universiti Malaysia Pahang Centre for Research in Advanced Fluid & Processes (FLUID CENTRE) Lebuhraya Tun Razak 26300 Gambang, Kuantan Pahang Malaysia
- Universiti Malaysia Pahang Department of Chemical Engineering, College of Engineering Lebuhraya Tun Razak 26300 Gambang, Kuantan Pahang Malaysia
| | - Hayder A. Abdulbari
- Universiti Malaysia Pahang Centre for Research in Advanced Fluid & Processes (FLUID CENTRE) Lebuhraya Tun Razak 26300 Gambang, Kuantan Pahang Malaysia
- Universiti Malaysia Pahang Department of Chemical Engineering, College of Engineering Lebuhraya Tun Razak 26300 Gambang, Kuantan Pahang Malaysia
| | - Sim Yee Chin
- Universiti Malaysia Pahang Department of Chemical Engineering, College of Engineering Lebuhraya Tun Razak 26300 Gambang, Kuantan Pahang Malaysia
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Direct grafting of cellulose nanocrystals with poly(ionic liquids) via Gamma-ray irradiation and their utilization for adsorptive removal of CR. Int J Biol Macromol 2022; 194:1029-1037. [PMID: 34856214 DOI: 10.1016/j.ijbiomac.2021.11.175] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2021] [Revised: 11/23/2021] [Accepted: 11/24/2021] [Indexed: 12/11/2022]
Abstract
In this work, a simple but effective method based on Gamma-ray initiated polymerization was reported for the first time through direct irradiation of CNCs and ionic liquid monomer to obtain poly (ionic liquids) functionalized CNCs (IL@CNCs). The adsorptive removal of Congo red (CR) from aqueous solution by IL@CNCs was also examined and the influence of contact time, pH values, initial concentrations and temperature on adsorption behavior was investigated in detail. Under the same adsorption conditions, the adsorption capacity was increased from 59.72 mg/g (CNCs) to 195.83 mg/g (IL@CNCs). The results of the adsorption isotherm and adsorption kinetics showed that the experimental data were more suitable to be described by the Freundlich isotherm adsorption model and the pseudo-second-order model. The adsorption process of CR on the surface of the adsorbent was endothermic and spontaneous. When the aqueous solution was acidic, it was more conducive to the adsorption of CR. At 100% breakthrough, the value of adsorption capacity is 199.95 mg/g and the value of partition coefficient is 9.64. Moreover, the adsorption capacity is expected to be further improved through adjustment of polymerization parameters and this method can also be used for preparation other poly (ionic liquids) modified composites.
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Luo Y, Zhai F, Zhang Y, Chen Z, Ding M, Qin D, Yang J, Feng G, Li L. A superfine glass fibre air filter with rapid response to photocatalytic antibacterial properties under visible light by loading rGO/ZnO. ROYAL SOCIETY OPEN SCIENCE 2021; 8:202285. [PMID: 34457329 PMCID: PMC8371377 DOI: 10.1098/rsos.202285] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/08/2021] [Accepted: 07/22/2021] [Indexed: 05/14/2023]
Abstract
The development of high-performance air filter has become more and more important to public health. However, it has always been very challenging for developing a multifunctional air filter to simultaneously achieve excellent filtration and antibacterial properties. Herein, a versatile air filter was prepared with loading the reduced graphene (rGO) and zinc oxide on the superfine glass fibre (s-GF) with the three-dimensional network structure by in situ sol-gel process followed by calcination, which aims to achieve synergistic high-efficiency air filtration and rapid response to photocatalytic antibacterial properties under visible light. The air filter showed a three-dimensional network structure based on a rGO/ZnO/s-GF multilayer and exhibited the highest catalytic performance by achieving a 95% degradation effect on rhodamine B within 2 h and achieving 100% antibacterial inactivation of the Escherichia coli and Staphylococcus aureus within 4 h under visible light when the weight ratio of rGO in rGO/ZnO is 1.6%. The air filtration efficiency can also be maintained at 99% after loading ZnO and rGO photocatalytic particles. The spectrum of the photoluminescence (PL), UV-Vis diffuse reflectance spectra (DRS) and electron spin resonance (ESR) indicate that the combination of rGO and ZnO on the s-GF can increase the separation of photogenerated carriers and the specific surface area of the air filter, thereby increasing the photocatalytic response and antibacterial properties of the s-GF air filter under visible light in a short time.
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Affiliation(s)
- Yongyi Luo
- School of Materials and Energy, Southwest University, Chongqing 402160, People's Republic of China
| | - Fuqiang Zhai
- Micro/Nano Optoelectronic Materials and Devices International Science and Technology Cooperation Base of China, Chongqing University of Arts and Sciences, Chongqing 402160, People's Republic of China
| | - Yingchun Zhang
- College of Pharmaceutical Sciences, Southwest University, Chongqing 402160, People's Republic of China
| | - Zhiqian Chen
- School of Materials and Energy, Southwest University, Chongqing 402160, People's Republic of China
| | - Mingde Ding
- Micro/Nano Optoelectronic Materials and Devices International Science and Technology Cooperation Base of China, Chongqing University of Arts and Sciences, Chongqing 402160, People's Republic of China
| | - Dajiang Qin
- Chongqing Zisun Technology Co., Ltd., Chongqing 401120, People's Republic of China
| | - Jinming Yang
- Chongqing Zisun Technology Co., Ltd., Chongqing 401120, People's Republic of China
| | - Guang Feng
- Engineering Research Center of Optical Instrument and System, Chongqing Institute of East China Normal University, Chongqing 401120, People's Republic of China
| | - Lu Li
- Micro/Nano Optoelectronic Materials and Devices International Science and Technology Cooperation Base of China, Chongqing University of Arts and Sciences, Chongqing 402160, People's Republic of China
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Keerthana SP, Yuvakkumar R, Ravi G, Kumar P, Elshikh MS, Alkhamis HH, Alrefaei AF, Velauthapillai D. A strategy to enhance the photocatalytic efficiency of α-Fe 2O 3. CHEMOSPHERE 2021; 270:129498. [PMID: 33422995 DOI: 10.1016/j.chemosphere.2020.129498] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/09/2020] [Revised: 12/24/2020] [Accepted: 12/28/2020] [Indexed: 06/12/2023]
Abstract
The photocatalytic dye degradation of pure α-Fe2O3 and different concentration of Co doped α-Fe2O3 is explored. Facile hydrothermal method were employed to prepare pristine, 2% and 4% Co-Fe2O3 nanoparticles. Further, synthesized product confirmation studies were employed from X-ray diffraction, UV-vis spectrometry, Fourier-transform infrared, Raman, scanning electron microscope and transmission electron microscope studies. The rhombohedral nanoparticles developed were enhanced photocatalytic action. Photocatalytic dye degradation studies were analyzed for prepared three samples and the photocatalytic efficacy of the obtained photocatalysts was compared experimentally. Methylene blue dye was degraded under UV-light irradiation with 364 nm. The results showed that 4% Co doped α-Fe2O3 sample exhibited better dye degradation with 92% efficiency. The 4% doping of cobalt ions enhanced the photocatalytic property of Fe2O3 and is a good candidate for methylene blue dye degradation above 90%. In addition, strategy for photocatalytic efficiency enhancement was proposed.
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Affiliation(s)
- S P Keerthana
- Department of Physics, Alagappa University, Karaikudi, 630 003, Tamil Nadu, 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.
| | - P Kumar
- Department of Animal Health and Management, Alagappa University, Karaikudi, 630003, India
| | - Mohamed Soliman Elshikh
- Department of Botany and Microbiology, College of Science, King Saud University, Riyadh, 11451, Saudi Arabia
| | - Hussein H Alkhamis
- Department of Botany and Microbiology, College of Science, King Saud University, Riyadh, 11451, Saudi Arabia
| | - Abdulwahed F Alrefaei
- Department of Zoology, College of Science, King Saud University, P.O. Box 2455, Riyadh, 11451, Saudi Arabia
| | - Dhayalan Velauthapillai
- Faculty of Engineering and Science, Western Norway University of Applied Sciences, Bergen, 5063, Norway.
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Katoch V, Sharma N, Sharma M, Baghoria M, Panda JJ, Singh M, Prakash B. Microflow synthesis and enhanced photocatalytic dye degradation performance of antibacterial Bi 2O 3 nanoparticles. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2021; 28:19155-19165. [PMID: 33398764 DOI: 10.1007/s11356-020-11711-1] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/12/2020] [Accepted: 11/16/2020] [Indexed: 06/12/2023]
Abstract
Microreactors can play a crucial role in synthesis and rapid testing of various nanocatalyst to be used in addressing the issue of environmental contamination. We have reported the rapid fabrication of polydimethylsiloxane (PDMS) and poly(methyl methacrylate) (PMMA)-based microreactor for the flow synthesis and enhanced inline photocatalysis of bismuth oxide (Bi2O3) nanoparticles. A T-shaped microreactor with uniform circular cross-sectional channel having inner diameter of 450 μm was utilized for synthesizing Bi2O3 nanoparticles with narrow size distribution. Further, photocatalytic dye degradation efficiency for methyl orange (MO) was recorded by coating these Bi2O3 nanoparticles within the inner walls of PMMA-based serpentine microreactors under visible light. The enhanced dye degradation efficiency of as high as 96% within just 15 min of irradiation is reported. A comparative analysis has also been done for both conventional as well as the in-channel photocatalysis highlighting the advantages of microreactor based photocatalysis over the conventional method. Bi2O3 nanoparticles also showed excellent stability even after three cycles indicating reusability of coated microreactors in photocatalysis. The small concentration of as synthesized Bi2O3 nanoparticles also demonstrated high efficacy for the inhibition of Escherichia coli bacterial pathogens.
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Affiliation(s)
- Vibhav Katoch
- Institute of Nano Science and Technology, Phase-10, Sector-64, Mohali, Punjab, 160062, India
- Centre for Nanoscience & Nanotechnology, UIEAST, Panjab University, Chandigarh, 160014, India
| | - Nipun Sharma
- Institute of Nano Science and Technology, Phase-10, Sector-64, Mohali, Punjab, 160062, India
| | - Manju Sharma
- Institute of Nano Science and Technology, Phase-10, Sector-64, Mohali, Punjab, 160062, India
| | - Mayank Baghoria
- Institute of Nano Science and Technology, Phase-10, Sector-64, Mohali, Punjab, 160062, India
| | - Jiban Jyoti Panda
- Institute of Nano Science and Technology, Phase-10, Sector-64, Mohali, Punjab, 160062, India
| | - Manish Singh
- Institute of Nano Science and Technology, Phase-10, Sector-64, Mohali, Punjab, 160062, India
| | - Bhanu Prakash
- Institute of Nano Science and Technology, Phase-10, Sector-64, Mohali, Punjab, 160062, India.
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Khurram R, Wang Z, Ehsan MF. α-Fe 2O 3-based nanocomposites: synthesis, characterization, and photocatalytic response towards wastewater treatment. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2021; 28:17697-17711. [PMID: 33403627 DOI: 10.1007/s11356-020-11778-w] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/15/2020] [Accepted: 11/19/2020] [Indexed: 06/12/2023]
Abstract
Recently, rising distress over ecological pollution owing to water contamination by coloring effluents primarily due to dyes is of growing concern. The development of semiconductor/magnetic oxide-based nanomaterials has verified to be a potent remediation means for water pollution. In the present article, the fabrication of nanocomposites was carried out by the facile hydrothermal method. The ZnO and ZnSe nanoparticles were in situ formed on the α-Fe2O3 layer, thereby forming a heterojunction. The prepared α-Fe2O3/ZnSe nanocomposite possessed a degradation of 98.9% for a Congo red aqueous solution of 100 ppm. The α-Fe2O3/ZnO nanocomposite showed only 26% degradation of 100 ppm dye solution depicting a poor photocatalytic performance. This is attributed to the formation of recombination-enhanced configuration (type-I heterostructure) in the α-Fe2O3/ZnO nanocomposite (NC). In contrast, α-Fe2O3/ZnSe NC accomplished a higher and enhanced photocatalytic response. The key rationale for elevated photocatalytic response is the establishment of a recombination-free configuration (type-II heterostructure). Thus, α-Fe2O3/ZnSe NC known as one of outstanding nanoparticle-nanocomposite photocatalysts was synthesized under mild conditions exclusive of some multifaceted post-treatment, for dye abatement process.
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Affiliation(s)
- Rooha Khurram
- Beijing Key Laboratory for Green Catalysis and Separation, Department of Chemistry and Chemical Engineering, Beijing University of Technology, Beijing, 100124, People's Republic of China
| | - Zhan Wang
- Beijing Key Laboratory for Green Catalysis and Separation, Department of Chemistry and Chemical Engineering, Beijing University of Technology, Beijing, 100124, People's Republic of China.
| | - Muhammad Fahad Ehsan
- Department of Chemistry, School of Natural Sciences (SNS), National University Of Sciences And Technology (NUST), H-12, Islamabad, 44000, Pakistan.
- Department of Chemistry, Cape Breton University, 1250 Grand Lake Road, Sydney, NS, B1P 6L2, Canada.
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Selective Catalytic Oxidation of Toluene to Benzaldehyde: Effect of Aging Time and Calcination Temperature Using CuxZnyO Mixed Metal Oxide Nanoparticles. Catalysts 2021. [DOI: 10.3390/catal11030354] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Oxidation is an important organic transformation, and several catalysts have been reported for this conversion. In this study, we report the synthesis of mixed metal oxide CuxZnyO, which is prepared by a coprecipitation method by varying the molar ratio of Cu and Zn in the catalytic system. The prepared mixed metal oxide CuxZnyO was evaluated for catalytic performance for toluene oxidation. Various parameters of the catalytic evaluation were studied in order to ascertain the optimum condition for the best catalytic performance. The results indicate that aging time, calcination temperature, reaction temperature, and feed rate influence catalytic performance. It was found that the catalyst interfaces apparently enhanced catalytic activity for toluene oxidation. The XRD diffractograms reveal the crystalline nature of the mixed metal oxide formed and also confirm the coexistence of hexagonal and monoclinic crystalline phases. The catalyst prepared by aging for 4 h and calcined at 450 °C was found to be the best for the conversion of toluene to benzaldehyde while the reactor temperature was maintained at 250 °C with toluene fed into the reactor at 0.01 mL/min. The catalyst was active for about 13 h.
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Patidar R, Srivastava VC. Evaluation of the sono-assisted photolysis method for the mineralization of toxic pollutants. Sep Purif Technol 2021. [DOI: 10.1016/j.seppur.2020.117903] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/07/2022]
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16
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Chanikya P, Nidheesh P, Syam Babu D, Gopinath A, Suresh Kumar M. Treatment of dyeing wastewater by combined sulfate radical based electrochemical advanced oxidation and electrocoagulation processes. Sep Purif Technol 2021. [DOI: 10.1016/j.seppur.2020.117570] [Citation(s) in RCA: 58] [Impact Index Per Article: 19.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
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17
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Raza W, Faraz M. Novel g-C 3N 4/Fe-ZnO/RGO nanocomposites with boosting visible light photocatalytic activity for MB, Cr (VI), and outstanding catalytic activity toward para-nitrophenol reduction. NANOTECHNOLOGY 2020; 31:325603. [PMID: 32320969 DOI: 10.1088/1361-6528/ab8c07] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
A novel g-C3N4/Fe-ZnO/RGO nanocomposite has been synthesized using the facile solvothermal method to boost the catalytic efficiency of ZnO. The structure and morphology of nanocomposites were examined by a wide range of characterization methods. The obtained g-C3N4/Fe-ZnO/RGO nanocomposite (Z-scheme heterostructure) exhibits improved photocatalytic activity toward the photodegradation of MB, Cr (VI) under visible-light irradiation and 4-nitrophenol reduction. The enhancement in activity of nanocomposite is ascribed to a unique heterostructure system, which facilitates excellent transport and separation of the photogenerated charge carrier, resulting in prolonged lifetime leading to continuous generation of reactive species. Moreover, the synergistic effect on the interface of ZnO and g-C3N4 and the introduction of reduced graphene oxide (RGO) serve as a booster for charge separation at the Z-scheme, which ultimately speeds up the degradation of pollutants. The present study provides a novel and facile approach for establishing an efficient nanocomposite for environmental remediation.
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Affiliation(s)
- Waseem Raza
- Department of Chemical Engineering, Indian Institute of Technology Delhi, Hauz Khas, New Delhi 110016, India. Department of Chemistry, Indian Institute of Technology Delhi, Hauz Khas, New Delhi 110016, India
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Engineering the MxZn1−xO (M = Al3+, Fe3+, Cr3+) nanoparticles for visible light-assisted catalytic mineralization of methylene blue dye using Taguchi design. CHEMICAL PAPERS 2020. [DOI: 10.1007/s11696-020-01113-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Gupta D, Chauhan R, Kumar N, Singh V, Srivastava VC, Mohanty P, Mandal TK. Enhancing photocatalytic degradation of quinoline by ZnO:TiO 2 mixed oxide: Optimization of operating parameters and mechanistic study. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2020; 258:110032. [PMID: 31929067 DOI: 10.1016/j.jenvman.2019.110032] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/27/2019] [Revised: 11/05/2019] [Accepted: 12/21/2019] [Indexed: 06/10/2023]
Abstract
This study focuses on the photocatalytic degradation of quinoline, a recalcitrant heterocyclic nitrogenous aromatic organic compound, using the mixed oxide ZnO-TiO2 photo-catalyst. Photo-catalysts were synthesized by the solid-state reaction method at different calcination temperatures of 400 °C, 600 °C, and 800 °C. Different analytical methods, including Field emission scanning electron microscope, Brunauer-Emmett-Teller surface area, X-ray diffraction, UV-vis diffuse reflectance spectroscopy, Fourier-transform infrared spectroscopy, Raman spectroscopy, and X-ray photoelectron spectroscopy analysis were used for the catalyst characterization. The highest pore surface area of 57.9 m2g-1 was obtained for the photo-catalyst calcined at 400 °C. The effects of calcination temperature, solution pH, initial concentration, catalyst dose as well as irradiation time were studied. At the optimum condition, i.e., calcination temperature of 400 °C, pH ≈8 and catalyst dose of 2.5 gL-1, maximum quinoline degradation and total organic carbon (TOC) removal efficiency of ≈92% and ≈78% were obtained after 240 min for initial quinoline amount of 50 mgL-1. The 1st, 2nd, and nth-order kinetic models were applied to analyze the quinoline degradation rate. The photocatalytic mechanism was studied by drawing energy level diagram with the help of the band-gap structures of the ZnO and TiO2, potential of the free radicals like OH and O2 and HOMO-LUMO energy gap of the quinoline molecule. The proposed pathways of quinoline mineralization were suggested on the basis of the identified intermediates by the gas chromatograph-mass spectrometer analysis and scavenger study.
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Affiliation(s)
- Divya Gupta
- Department of Chemical Engineering, Indian Institute of Technology Roorkee, Roorkee, 247667, Uttarakhand, India.
| | - Rohit Chauhan
- Department of Chemical Engineering, Indian Institute of Technology Roorkee, Roorkee, 247667, Uttarakhand, India.
| | - Navneet Kumar
- Department of Chemical Engineering, Indian Institute of Technology Roorkee, Roorkee, 247667, Uttarakhand, India.
| | - Vikash Singh
- Department of Chemical Engineering, Indian Institute of Technology Roorkee, Roorkee, 247667, Uttarakhand, India.
| | - Vimal Chandra Srivastava
- Department of Chemical Engineering, Indian Institute of Technology Roorkee, Roorkee, 247667, Uttarakhand, India.
| | - Paritosh Mohanty
- Department of Chemistry, Indian Institute of Technology Roorkee, Roorkee, 247667, Uttarakhand, India.
| | - Tapas Kumar Mandal
- Department of Chemistry, Indian Institute of Technology Roorkee, Roorkee, 247667, Uttarakhand, India.
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Homaeigohar S. The Nanosized Dye Adsorbents for Water Treatment. NANOMATERIALS 2020; 10:nano10020295. [PMID: 32050582 PMCID: PMC7075180 DOI: 10.3390/nano10020295] [Citation(s) in RCA: 75] [Impact Index Per Article: 18.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/23/2019] [Revised: 02/02/2020] [Accepted: 02/04/2020] [Indexed: 01/14/2023]
Abstract
Clean water is a vital element for survival of any living creature and, thus, crucially important to achieve largely and economically for any nation worldwide. However, the astonishingly fast trend of industrialization and population growth and the arisen extensive water pollutions have challenged access to clean water across the world. In this regard, 1.6 million tons of dyes are annually consumed. Thereof, 10%–15% are wasted during use. To decolorize water streams, there is an urgent need for the advanced remediation approaches involving utilization of novel materials and technologies, which are cost and energy efficient. Nanomaterials, with their outstanding physicochemical properties, can potentially resolve the challenge of need to water treatment in a less energy demanding manner. In this review, a variety of the most recent (from 2015 onwards) opportunities arisen from nanomaterials in different dimensionalities, performances, and compositions for water decolorization is introduced and discussed. The state-of-the-art research studies are presented in a classified manner, particularly based on structural dimensionality, to better illustrate the current status of adsorption-based water decolorization using nanomaterials. Considering the introduction of many newly developed nano-adsorbents and their classification based on the dimensionality factor, which has never been employed for this sake in the related literature, a comprehensive review will be presented.
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Affiliation(s)
- Shahin Homaeigohar
- Nanochemistry and Nanoengineering, Department of Chemistry and Materials Science, School of Chemical Engineering, Aalto University, Kemistintie 1, 00076 Aalto, Finland
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21
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Shajahan S, Arumugam P, Rajendran R, Ponnusamy Munusamy A. Optimization and detailed stability study on Pb doped ceria nanocubes for enhanced photodegradation of several anionic and cationic organic pollutants. ARAB J CHEM 2020. [DOI: 10.1016/j.arabjc.2017.11.001] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022] Open
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22
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Alam U, Shah TA, Khan A, Muneer M. One-pot ultrasonic assisted sol-gel synthesis of spindle-like Nd and V codoped ZnO for efficient photocatalytic degradation of organic pollutants. Sep Purif Technol 2019. [DOI: 10.1016/j.seppur.2018.11.048] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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23
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Photocatalytic properties of solution combustion synthesized ZnO powders using mixture of CTAB and glycine and citric acid fuels. ADV POWDER TECHNOL 2019. [DOI: 10.1016/j.apt.2018.11.004] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
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24
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Mahajan BK, Kumar N, Chauhan R, Srivastava VC, Gulati S. Mechanistic evaluation of heterocyclic aromatic compounds mineralization by a Cu doped ZnO photo-catalyst. Photochem Photobiol Sci 2019; 18:1540-1555. [DOI: 10.1039/c8pp00580j] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
In this study, a Cu doped ZnO photo-catalyst was used for the degradation of the heterocyclic compounds, pyridine and quinoline.
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Affiliation(s)
- Bharat Kumar Mahajan
- Department of Chemical Engineering
- Indian Institute of Technology Roorkee
- Roorkee 247667
- India
| | - Navneet Kumar
- Department of Chemical Engineering
- Indian Institute of Technology Roorkee
- Roorkee 247667
- India
| | - Rohit Chauhan
- Department of Chemical Engineering
- Indian Institute of Technology Roorkee
- Roorkee 247667
- India
| | | | - Siddhant Gulati
- Department of Chemical Engineering
- National Institute of Technology Hamirpur
- Hamirpur 177005
- India
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25
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Das S, Ghosh S, Misra AJ, Tamhankar AJ, Mishra A, Lundborg CS, Tripathy SK. Sunlight Assisted Photocatalytic Degradation of Ciprofloxacin in Water Using Fe Doped ZnO Nanoparticles for Potential Public Health Applications. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2018; 15:E2440. [PMID: 30388857 PMCID: PMC6266230 DOI: 10.3390/ijerph15112440] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/25/2018] [Revised: 10/27/2018] [Accepted: 10/29/2018] [Indexed: 11/24/2022]
Abstract
Antibiotic residues in the aquatic environment have the potential to induce resistance in environmental bacteria, which ultimately might get transferred to pathogens making treatment of diseases difficult and poses a serious threat to public health. If antibiotic residues in the environment could be eliminated or reduced, it could contribute to minimizing antibiotic resistance. Towards this objective, water containing ciprofloxacin was treated by sunlight-assisted photocatalysis using Fe- doped ZnO nanoparticles for assessing the degradation potential of this system. Parameters like pH, temperature, catalytic dosage were assessed for the optimum performance of the system. To evaluate degradation of ciprofloxacin, both spectrophotometric as well as microbiological (loss of antibiotic activity) methods were employed. 100 mg/L Fe-doped ZnO nanoparticle catalyst and sunlight intensity of 120,000⁻135,000 lux system gave optimum performance at pH 9 at 30 °C and 40 °C. Under these conditions spectrophotometric analysis showed complete degradation of ciprofloxacin (10 mg/L) at 210 min. Microbiological studies showed loss of antibacterial activity of the photocatalytically treated ciprofloxacin-containing water against Staphylococcus aureus (10⁸ CFU) in 60 min and for Escherichia coli (10⁸ CFU) in 75 min. The developed system, thus possess a potential for treatment of antibiotic contaminated waters for eliminating/reducing antibiotic residues from environment.
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Affiliation(s)
- Sourav Das
- School of Biotechnology, Kalinga Institute of Industrial Technology (KIIT), Bhubaneswar 751024, India.
| | - Soumen Ghosh
- School of Biotechnology, Kalinga Institute of Industrial Technology (KIIT), Bhubaneswar 751024, India.
| | - Ananyo Jyoti Misra
- School of Biotechnology, Kalinga Institute of Industrial Technology (KIIT), Bhubaneswar 751024, India.
| | - Ashok J Tamhankar
- School of Biotechnology, Kalinga Institute of Industrial Technology (KIIT), Bhubaneswar 751024, India.
- Department of Public Health Sciences, Karolinska Institutet, SE 17177 Stockholm, Sweden.
| | - Amrita Mishra
- School of Biotechnology, Kalinga Institute of Industrial Technology (KIIT), Bhubaneswar 751024, India.
| | | | - Suraj K Tripathy
- School of Biotechnology, Kalinga Institute of Industrial Technology (KIIT), Bhubaneswar 751024, India.
- School of Chemical Technology, Kalinga Institute of Industrial Technology (KIIT), Bhubaneswar 751024, India.
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Enhanced visible light photodegradation activity of RhB/MB from aqueous solution using nanosized novel Fe-Cd co-modified ZnO. Sci Rep 2018; 8:10691. [PMID: 30013042 PMCID: PMC6048152 DOI: 10.1038/s41598-018-29025-1] [Citation(s) in RCA: 79] [Impact Index Per Article: 13.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2017] [Accepted: 06/19/2018] [Indexed: 11/17/2022] Open
Abstract
A series of novel Fe-Cd co-doped ZnO nanoparticle based photocatalysts are successfully synthesized by sol-gel route and characterized using scanning electron microscopy (SEM), energy dispersive X-ray emission (EDX), transmission electron microscopy (TEM), X-ray diffraction (XRD), UV-Vis spectroscopy, X-ray photoelectron spectroscopy (XPS), and Brunauer-Emmett-Teller (BET) techniques. The photocatalytic activity of ZnO nanoparticles doped with various atomic weight fraction of Fe and Cd has been investigated under visible light irradiation using the Methylene Blue and Rhodamine B dye in aqueous solution. The FeCd (2%):ZnO (ZFC-1) exhibit the highest photocatalytic activity in terms of rate constant as KMB = 0.01153 min−1 and KRhB = 0.00916 min−1). Further, the re-usability of the ZFC-1 photocatalyst is studied which confirms that it can be reused up to five times with nearly negligible loss of the photocatalytic efficiency. Moreover, the role of photoactive species investigated using a radical scavenger technique. The present investigations show that the doping concentration plays significant role in photocatalytic performance. The visible light absorption shown by Fe-Cd co-doped ZnO nanoparticles is much higher than that of undoped body probably due to co-doping, and the charge carrier recombination is decreased effectively which yields a higher photocatalytic performance. The mechanism for the enhancement of photocatalytic activity under visible light irradiation is also proposed.
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Diniz CV, da Fonseca ME, Binatti I, Ardisson JD, Lorençon E, Mambrini RV. Magnetic catalysts based on electric arc furnace dust used to remove pollutants. RESEARCH ON CHEMICAL INTERMEDIATES 2018. [DOI: 10.1007/s11164-018-3390-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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28
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Chang H, Chao Y, Pang J, Li H, Lu L, He M, Chen G, Zhu W, Li H. Advanced Overlap Adsorption Model of Few-Layer Boron Nitride for Aromatic Organic Pollutants. Ind Eng Chem Res 2018. [DOI: 10.1021/acs.iecr.7b05092] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
| | | | | | | | | | | | - Guangying Chen
- Key Laboratory of Tropical Medicinal Plant Chemistry of Education, Hainan Normal University, Haikou 571158, P. R. China
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29
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Ibrahim MM, Asal S. Physicochemical and photocatalytic studies of Ln 3+ - ZnO for water disinfection and wastewater treatment applications. J Mol Struct 2017. [DOI: 10.1016/j.molstruc.2017.08.007] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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30
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Ghosh A, Dutta S, Mukherjee I, Biswas S, Chatterjee S, Saha R. Template-free synthesis of flower-shaped zero-valent iron nanoparticle: Role of hydroxyl group in controlling morphology and nitrate reduction. ADV POWDER TECHNOL 2017. [DOI: 10.1016/j.apt.2017.06.006] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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31
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Das R, Bhaumik M, Giri S, Maity A. Sonocatalytic rapid degradation of Congo red dye from aqueous solution using magnetic Fe 0/polyaniline nanofibers. ULTRASONICS SONOCHEMISTRY 2017; 37:600-613. [PMID: 28427673 DOI: 10.1016/j.ultsonch.2017.02.022] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/21/2016] [Revised: 12/09/2016] [Accepted: 02/16/2017] [Indexed: 06/07/2023]
Abstract
Nano-sized magnetic Fe0/polyaniline (Fe0/PANI) nanofibers were used as an effective material for sonocatalytic degradation of organic anionic Congo red (CR) dye. Fe0/PANI, was synthesized via reductive deposition of nano-Fe0 onto the PANI nanofibers at room temperature. Prepared catalyst was characterized using HR-TEM, FE-SEM, XRD, FTIR instruments. The efficacy of catalyst in removing CR was assessed colorimetrically using UV-visible spectroscopy under different experimental conditions such as % of Fe0 loading into the composite material, solution pH, initial concentration of dye, catalyst dosage, temperature and ultrasonic power. The optimum conditions for sonocatalytic degradation of CR were obtained at catalyst concentrations=500mg.L-1, concentration of CR=200ppm, solution pH=neutral (7.0), temperature=30°C, % of Fe0 loading=30% and 500W ultrasonic power. The experimental results showed that ultrasonic process could remove 98% of Congo red within 30min with higher Qmax value (Qmax=446.4 at 25°C). The rate of degradation of CR dye was much faster in this ultrasonic technique rather than conventional adsorption process. The degradation efficiency declined with the addition of common inorganic salts (NaCl, Na2CO3, Na2SO4 and Na3PO4). The rate of degradation suppressed more with increasing salt concentration. Kinetic and isotherm studies indicated that the degradation of CR provides pseudo-second order rate kinetic and Langmuir isotherm model compared to all other models tested. The excellent high degradation capacity of Fe0/PANI under ultrasonic irradiation can be explained on the basis of the formation of active hydroxyl radicals (OH) and subsequently a series of free radical reactions.
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Affiliation(s)
- Raghunath Das
- Department of Civil and Chemical Engineering, University of South Africa (UNISA), South Africa
| | - Madhumita Bhaumik
- Department of Applied Chemistry, University of Johannesburg, Johannesburg, South Africa
| | - Somnath Giri
- Department of Civil and Chemical Engineering, University of South Africa (UNISA), South Africa
| | - Arjun Maity
- Department of Civil and Chemical Engineering, University of South Africa (UNISA), South Africa; DST/CSIR National Centre for Nanostructured Materials, Council for Scientific and Industrial Research, Pretoria 0001, South Africa.
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32
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Solar and Visible Light Illumination on Immobilized Nano Zinc Oxide for the Degradation and Mineralization of Orange G in Wastewater. Catalysts 2017. [DOI: 10.3390/catal7050164] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
An advanced oxidation process (AOP) utilizing immobilized zinc oxide (ZnO) photocatalyst was employed to decolorize and mineralize orange G (OG) azo dye in wastewater under solar and visible light irradiation. This AOP employed visible light and ZnO in a so-called Vis/ZnO process. Operating parameters, including ZnO dosage, initial OG concentration, pH, visible-light intensity, catalyst loaded area, and treatment volume were investigated to illustrate their influences on OG degradation and mineralization. From the results, neither visible light alone, nor the ZnO adsorption process could degrade or remove OG from wastewater. However, for the Vis/ZnO process, the higher ZnO dosage and visible light intensity are two major parameters to improve the OG degradation and total organic carbons (TOC) mineralization. The initial pH of 11 was the most effective pH condition on the OG degradation. The first-order rate constant is exponentially decreased from 0.025 to 0.0042 min−1 with the increase of the initial OG concentration and an empirical equation can be derived to estimate the first-order rate constant with a known initial OG concentration. In contrast, the first-order rate constant is linearly increased from 0.0027 to 0.0083 min−1 by increasing the visible light intensity. The results present that the Vis/ZnO process is an effective AOP for the degradation of OG in wastewater.
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Tabari T, Jamali SS, Jamali SK. Predominant role of grafted iron(III) Schiff-base complex in oxidation of gaseous and aqueous reactants: A visible light responsive photocatalyst. J Photochem Photobiol A Chem 2017. [DOI: 10.1016/j.jphotochem.2016.12.016] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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34
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Gong P, Li Y, Zhai C, Luo J, Tian X, Chen L, Zhao J. Syntheses, structural characterization and photophysical properties of two series of rare-earth-isonicotinic-acid containing Waugh-type manganomolybdates. CrystEngComm 2017. [DOI: 10.1039/c6ce02428a] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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35
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Chen F, Wu X, Bu R, Yang F. Co–Fe hydrotalcites for efficient removal of dye pollutants via synergistic adsorption and degradation. RSC Adv 2017. [DOI: 10.1039/c7ra07417d] [Citation(s) in RCA: 37] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Layered double hydroxides (LDHs) with hydrotalcite-like structures containing Co(ii) and Fe(iii) were prepared and used for the removal of direct red 23 (DR23) from water solution.
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Affiliation(s)
- Feifei Chen
- College of Chemistry and Chemical Engineering
- Wuhan Textile University
- Wuhan
- China
- Hubei Key Laboratory of Biomass Fibers and Eco-dyeing and Finishing
| | - Xi Wu
- College of Chemistry and Chemical Engineering
- Wuhan Textile University
- Wuhan
- China
| | - Ran Bu
- College of Chemistry and Chemical Engineering
- Wuhan Textile University
- Wuhan
- China
| | - Feng Yang
- College of Chemistry and Chemical Engineering
- Wuhan Textile University
- Wuhan
- China
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Singh S, Srivastava VC, Mandal TK, Mall ID, Lo SL. Synthesis and application of green mixed-metal oxide nano-composite materials from solid waste for dye degradation. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2016; 181:146-156. [PMID: 27341375 DOI: 10.1016/j.jenvman.2016.06.007] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/17/2015] [Revised: 05/26/2016] [Accepted: 06/05/2016] [Indexed: 06/06/2023]
Abstract
Present study demonstrates reutilization of electrochemical (EC) sludge as a potential low-cost green catalyst for dye degradation. Hexagonal Fe2O3 type phase with trevorite (NiFe2O4)-type cubic phase nanocomposite material (NCM) was synthesized from solid waste sludge generated during EC treatment of textile industry wastewater with stainless steel electrode. For NCM synthesis, sludge was heated at different temperatures under controlled condition. Various synthesized NCMs were characterized by powder X-ray diffraction (PXD), energy dispersive X-ray (EDX) spectroscopy and X-ray photoelectron spectroscopy (XPS) analysis. The synthesized NCMs were found to contain iron, chromium, nickel and oxygen in the form of α-Fe2O3 (metal: oxygen = 40:60), (Fe,Cr,Ni)2O3 and trevorite NiFe2O4, (Ni,Fe,Cr) (Fe,Cr,Ni)2O4 (metal: oxygen = 43:57). Field emission scanning electron microscopy (FE-SEM), transmission electron microscopy (TEM), pore size distribution, and atomic force microscope (AFM) analysis showed distribution of grains of different shapes and sizes. Catalytic activity of NCM was studied by the methylene red dye degradation by using the catalytic wet peroxidation process. Zeta potential study was performed under different pH so as to determine the performance of the NCMs during dye degradation.
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Affiliation(s)
- Seema Singh
- Department of Chemical Engineering, Indian Institute of Technology Roorkee, Roorkee 247667, Uttarakhand, India; Graduate Institute of Environmental Engineering, National Taiwan University, 71, Chou-Shan Rd., Taipei 106, Taiwan
| | - Vimal Chandra Srivastava
- Department of Chemical Engineering, Indian Institute of Technology Roorkee, Roorkee 247667, Uttarakhand, India.
| | - Tapas Kumar Mandal
- Department of Chemistry, Indian Institute of Technology, Roorkee, Roorkee 247667, Uttarakhand, India
| | - Indra Deo Mall
- Department of Chemical Engineering, Indian Institute of Technology Roorkee, Roorkee 247667, Uttarakhand, India; Department of Chemical Engineering, University of Petroleum & Energy Studies, Dehradun 248007, Uttarakhand, India
| | - Shang Lien Lo
- Graduate Institute of Environmental Engineering, National Taiwan University, 71, Chou-Shan Rd., Taipei 106, Taiwan
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Varma A, Mukasyan AS, Rogachev AS, Manukyan KV. Solution Combustion Synthesis of Nanoscale Materials. Chem Rev 2016; 116:14493-14586. [PMID: 27610827 DOI: 10.1021/acs.chemrev.6b00279] [Citation(s) in RCA: 273] [Impact Index Per Article: 34.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Solution combustion is an exciting phenomenon, which involves propagation of self-sustained exothermic reactions along an aqueous or sol-gel media. This process allows for the synthesis of a variety of nanoscale materials, including oxides, metals, alloys, and sulfides. This Review focuses on the analysis of new approaches and results in the field of solution combustion synthesis (SCS) obtained during recent years. Thermodynamics and kinetics of reactive solutions used in different chemical routes are considered, and the role of process parameters is discussed, emphasizing the chemical mechanisms that are responsible for rapid self-sustained combustion reactions. The basic principles for controlling the composition, structure, and nanostructure of SCS products, and routes to regulate the size and morphology of the nanoscale materials are also reviewed. Recently developed systems that lead to the formation of novel materials and unique structures (e.g., thin films and two-dimensional crystals) with unusual properties are outlined. To demonstrate the versatility of the approach, several application categories of SCS produced materials, such as for energy conversion and storage, optical devices, catalysts, and various important nanoceramics (e.g., bio-, electro-, magnetic), are discussed.
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Affiliation(s)
- Arvind Varma
- School of Chemical Engineering, Purdue University , West Lafayette, Indiana 47907, United States
| | | | - Alexander S Rogachev
- Institute of Structural Macrokinetics and Materials Science, RAS , Chernogolovka 142432, Russia.,National University of Science and Technology, MISiS , Moscow 119049, Russia
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Das S, Srivastava VC. Microfluidic-based photocatalytic microreactor for environmental application: a review of fabrication substrates and techniques, and operating parameters. Photochem Photobiol Sci 2016; 15:714-30. [DOI: 10.1039/c5pp00469a] [Citation(s) in RCA: 65] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
This article gives an overview of photocatalytic microreactors with an application in environmental science, in particular, the degradation of different toxic dyes within microchannels.
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Affiliation(s)
- Susmita Das
- Department of Chemical Engineering
- Indian Institute of Technology Roorkee
- Roorkee
- India
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Dutta S, Ghosh A, Kabir H, Saha R. Facile one pot synthesis of zinc oxide nanorods and statistical evaluation for photocatalytic degradation of a diazo dye. WATER SCIENCE AND TECHNOLOGY : A JOURNAL OF THE INTERNATIONAL ASSOCIATION ON WATER POLLUTION RESEARCH 2016; 74:698-713. [PMID: 27508375 DOI: 10.2166/wst.2016.248] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
In the present work zinc oxide nanorods (ZNRs) have been synthesized to estimate its photocatalytic degradation potential on an industrially used diazo dye and optimization of the total treatment process has been designed. Response surface methodology (RSM) has been used to model the operational parameters for this photocatalytic degradation. The crystallite size (101 plane) of the synthesized ZNR has been found to be 20.99 nm having a band gap energy of 3.45 eV. At elevated pH, the rate of degradation of the photocatalyst was found to be higher than that of acidic pH. The independent variables of the model are time (9.6-122 min), pH (2-12.2), catalyst dose (0.2-0.4 g/L) and dye concentration (88-512 mg/L). It was seen that the degradation efficiency was significantly affected by the initial dye concentration and the pH, the optimal values of the parameters being a pH of 10.67, an initial concentration of 150 mg/L and ZnO dose of 0.37 g/L, the time taken being 88.52 min. The actual degradation efficiency of the dye reached 96.9% at optimized condition, which is quite close to the predicted value of 98.07%.
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Affiliation(s)
- Suvanka Dutta
- Department of Chemistry, National Institute of Technology Durgapur, Durgapur 713209, India E-mail:
| | - Ananya Ghosh
- Department of Chemistry, National Institute of Technology Durgapur, Durgapur 713209, India E-mail:
| | - Humayun Kabir
- Department of Earth and Environmental Science, National Institute of Technology Durgapur, Durgapur 713209, India
| | - Rajnarayan Saha
- Department of Chemistry, National Institute of Technology Durgapur, Durgapur 713209, India E-mail:
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Lv H, Ji G, Yang Z, Liu Y, Zhang X, Liu W, Zhang H. Enhancement photocatalytic activity of the graphite-like C 3 N 4 coated hollow pencil-like ZnO. J Colloid Interface Sci 2015; 450:381-387. [DOI: 10.1016/j.jcis.2015.03.038] [Citation(s) in RCA: 78] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2014] [Revised: 03/13/2015] [Accepted: 03/20/2015] [Indexed: 10/23/2022]
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Chennakesavulu K, Reddy MM, Reddy GR, Rabel A, Brijitta J, Vinita V, Sasipraba T, Sreeramulu J. Synthesis, characterization and photo catalytic studies of the composites by tantalum oxide and zinc oxide nanorods. J Mol Struct 2015. [DOI: 10.1016/j.molstruc.2015.02.052] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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42
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Basturk E, Karatas M. Decolorization of antraquinone dye Reactive Blue 181 solution by UV/H2O2 process. J Photochem Photobiol A Chem 2015. [DOI: 10.1016/j.jphotochem.2014.11.003] [Citation(s) in RCA: 61] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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43
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Ramanjaneya Reddy G, Balasubramanian S. Synthesis, characterization and photocatalytic studies of mesoporous silica grafted Ni(ii) and Cu(ii) complexes. RSC Adv 2015. [DOI: 10.1039/c5ra07469j] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Synthesis of mesoporous silica grafted Ni(ii) and Cu(ii) complexes and their catalytic applications.
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Affiliation(s)
- G. Ramanjaneya Reddy
- Department of Inorganic Chemistry
- School of Chemical Sciences
- University of Madras
- Chennai-600 025
- India
| | - S. Balasubramanian
- Department of Inorganic Chemistry
- School of Chemical Sciences
- University of Madras
- Chennai-600 025
- India
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Wang W, Tadé MO, Shao Z. Research progress of perovskite materials in photocatalysis- and photovoltaics-related energy conversion and environmental treatment. Chem Soc Rev 2015; 44:5371-408. [DOI: 10.1039/c5cs00113g] [Citation(s) in RCA: 598] [Impact Index Per Article: 66.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Perovskite materials are shown to be active in the applications of photocatalysis- and photovoltaics-related energy conversion and environmental treatment.
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Affiliation(s)
- Wei Wang
- Department of Chemical Engineering
- Curtin University
- Perth
- Australia
| | - Moses O. Tadé
- Department of Chemical Engineering
- Curtin University
- Perth
- Australia
| | - Zongping Shao
- Department of Chemical Engineering
- Curtin University
- Perth
- Australia
- State Key Laboratory of Materials-Oriented Chemical Engineering
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Zhang Q, Liu JK, Wang JD, Luo HX, Lu Y, Yang XH. Atmospheric Self-induction Synthesis and Enhanced Visible Light Photocatalytic Performance of Fe3+ Doped Ag-ZnO Mesocrystals. Ind Eng Chem Res 2014. [DOI: 10.1021/ie502011h] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- Qi Zhang
- Key Laboratory
for Advanced Materials, East China University of Science and Technology, Shanghai, 200237 P.R. China
| | - Jin-Ku Liu
- Key Laboratory
for Advanced Materials, East China University of Science and Technology, Shanghai, 200237 P.R. China
| | - Jian-Dong Wang
- Key Laboratory
for Advanced Materials, East China University of Science and Technology, Shanghai, 200237 P.R. China
| | - Hong-Xi Luo
- Key Laboratory
for Advanced Materials, East China University of Science and Technology, Shanghai, 200237 P.R. China
| | - Yi Lu
- Key Laboratory
for Advanced Materials, East China University of Science and Technology, Shanghai, 200237 P.R. China
| | - Xiao-Hong Yang
- Department of Chemistry, Chizhou University, Chizhou, 247000 P.R. China
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Recent advances in heterogeneous photocatalytic decolorization of synthetic dyes. ScientificWorldJournal 2014; 2014:692307. [PMID: 25054183 PMCID: PMC4099358 DOI: 10.1155/2014/692307] [Citation(s) in RCA: 107] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2014] [Revised: 04/10/2014] [Accepted: 04/14/2014] [Indexed: 11/18/2022] Open
Abstract
During the process and operation of the dyes, the wastes produced were commonly found to contain organic and inorganic impurities leading to risks in the ecosystem and biodiversity with the resultant impact on the environment. Improper effluent disposal in aqueous ecosystems leads to reduction of sunlight penetration which in turn diminishes photosynthetic activity, resulting in acute toxic effects on the aquatic flora/fauna and dissolved oxygen concentration. Recently, photodegradation of various synthetic dyes has been studied in terms of their absorbance and the reduction of oxygen content by changes in the concentration of the dye. The advantages that make photocatalytic techniques superior to traditional methods are the ability to remove contaminates in the range of ppb, no generation of polycyclic compounds, higher speed, and lower cost. Semiconductor metal oxides, typically TiO2, ZnO, SnO, NiO, Cu2O, Fe3O4, and also CdS have been utilized as photocatalyst for their nontoxic nature, high photosensitivity, wide band gap and high stability. Various process parameters like photocatalyst dose, pH and initial dye concentrations have been varied and highlighted. Research focused on surface modification of semiconductors and mixed oxide semiconductors by doping them with noble metals (Pt, Pd, Au, and Ag) and organic matter (C, N, Cl, and F) showed enhanced dye degradation compared to corresponding native semiconductors. This paper reviews recent advances in heterogeneous photocatalytic decolorization for the removal of synthetic dyes from water and wastewater. Thus, the main core highlighted in this paper is the critical selection of semiconductors for photocatalysis based on the chemical, physical, and selective nature of the poisoning dyes.
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Wang X, Zhang Y, Hao C, Feng F, Yin H, Si N. Solid-Phase Synthesis of Mesoporous ZnO Using Lignin-Amine Template and Its Photocatalytic Properties. Ind Eng Chem Res 2014. [DOI: 10.1021/ie404179f] [Citation(s) in RCA: 57] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Affiliation(s)
- Xiaohong Wang
- School of Chemistry and Chemical Engineering and ‡School of Material Science & Engineering, Jiangsu University, Zhenjiang 212013, Jiangsu Province China
| | - Yike Zhang
- School of Chemistry and Chemical Engineering and ‡School of Material Science & Engineering, Jiangsu University, Zhenjiang 212013, Jiangsu Province China
| | - Chen Hao
- School of Chemistry and Chemical Engineering and ‡School of Material Science & Engineering, Jiangsu University, Zhenjiang 212013, Jiangsu Province China
| | - Feng Feng
- School of Chemistry and Chemical Engineering and ‡School of Material Science & Engineering, Jiangsu University, Zhenjiang 212013, Jiangsu Province China
| | - Henbo Yin
- School of Chemistry and Chemical Engineering and ‡School of Material Science & Engineering, Jiangsu University, Zhenjiang 212013, Jiangsu Province China
| | - Naichao Si
- School of Chemistry and Chemical Engineering and ‡School of Material Science & Engineering, Jiangsu University, Zhenjiang 212013, Jiangsu Province China
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Mary Jacob N, Madras G, Kottam N, Thomas T. Multivalent Cu-Doped ZnO Nanoparticles with Full Solar Spectrum Absorbance and Enhanced Photoactivity. Ind Eng Chem Res 2014. [DOI: 10.1021/ie404378z] [Citation(s) in RCA: 66] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Affiliation(s)
| | | | - Nagaraju Kottam
- Department of Chemistry, M.S. Ramaiah Institute of Technology, Bangalore-560012, Karnataka, India
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Ansari MO, Khan MM, Ansari SA, Lee J, Cho MH. Enhanced thermoelectric behaviour and visible light activity of Ag@TiO2/polyaniline nanocomposite synthesized by biogenic-chemical route. RSC Adv 2014. [DOI: 10.1039/c4ra02602k] [Citation(s) in RCA: 69] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Synthesis of an Ag@TiO2/Pani nanocomposite by a biogenic-chemical route.
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Affiliation(s)
- Mohd Omaish Ansari
- School of Chemical Engineering
- Yeungnam University
- Gyeongsan-si, South Korea
| | | | - Sajid Ali Ansari
- School of Chemical Engineering
- Yeungnam University
- Gyeongsan-si, South Korea
| | - Jintae Lee
- School of Chemical Engineering
- Yeungnam University
- Gyeongsan-si, South Korea
| | - Moo Hwan Cho
- School of Chemical Engineering
- Yeungnam University
- Gyeongsan-si, South Korea
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