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Razavi Z, Mirghaffari N, Soleimani M. Reduction of CO 2 emission through a photocatalytic process using powder and coated zeolite-supported TiO 2 under concentrated sunlight irradiation. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:32524-32538. [PMID: 36469265 DOI: 10.1007/s11356-022-24498-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/17/2022] [Accepted: 11/27/2022] [Indexed: 06/17/2023]
Abstract
The efficiency of a novel synthetic zeolite (Ze) prepared from stone cutting sludge and a natural zeolite (clinoptilolite, Cp) as the support of TiO2 photocatalyst was examined for the CO2 removal under solar irradiation using a designed parabolic trough collector (PTC). The used samples were characterized using XRF, BET, SEM/EDS, and XPS analyses. The enhanced sunlight irradiation obtained by PTC increased the performance of CO2 photocatalytic removal. The maximum CO2 adsorption by TiO2-Ze and TiO2-Cp composites was 21.1% and 28.4% which increased to 61.8% and 78.9% under sunlight irradiation, respectively. The efficiency of zeolite-TiO2 composites for CO2 removal was approximately two times higher than zeolites and TiO2 alone. The performance of TiO2-Ze-coated composite with lower use of photocatalyst for CO2 adsorption and photocatalytic removal was better than that of powder one. Regeneration of TiO2-Ze using NaOH solution improved its removal efficiency. The adsorption behavior of CO2 on TiO2-Ze composite was well described by the Langmuir isotherm and the pseudo-first-order kinetic model. This work promises CO2 reduction using natural and synthetic zeolite as an efficient photocatalyst support under solar irradiation.
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Affiliation(s)
- Zahra Razavi
- Department of Natural Resources, Isfahan University of Technology, Isfahan, Iran
| | | | - Mohsen Soleimani
- Department of Natural Resources, Isfahan University of Technology, Isfahan, Iran
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2
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Conversion of Plastic Waste into Supports for Nanostructured Heterogeneous Catalysts: Application in Environmental Remediation. SURFACES 2021. [DOI: 10.3390/surfaces5010002] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Plastics are ubiquitous in our society and are used in many industries, such as packaging, electronics, the automotive industry, and medical and health sectors, and plastic waste is among the types of waste of higher environmental concern. The increase in the amount of plastic waste produced daily has increased environmental problems, such as pollution by micro-plastics, contamination of the food chain, biodiversity degradation and economic losses. The selective and efficient conversion of plastic waste for applications in environmental remediation, such as by obtaining composites, is a strategy of the scientific community for the recovery of plastic waste. The development of polymeric supports for efficient, sustainable, and low-cost heterogeneous catalysts for the treatment of organic/inorganic contaminants is highly desirable yet still a great challenge; this will be the main focus of this work. Common commercial polymers, like polystyrene, polypropylene, polyethylene therephthalate, polyethylene and polyvinyl chloride, are addressed herein, as are their main physicochemical properties, such as molecular mass, degree of crystallinity and others. Additionally, we discuss the environmental and health risks of plastic debris and the main recycling technologies as well as their issues and environmental impact. The use of nanomaterials raises concerns about toxicity and reinforces the need to apply supports; this means that the recycling of plastics in this way may tackle two issues. Finally, we dissert about the advances in turning plastic waste into support for nanocatalysts for environmental remediation, mainly metal and metal oxide nanoparticles.
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Preparation of Ag-TiO2/Sr4Al14O25:Eu2+,Dy3+ Photocatalyst on Phosphor Beads and Its Photoreaction Characteristics. Catalysts 2021. [DOI: 10.3390/catal11020261] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023] Open
Abstract
Long-lasting Sr4Al14O25:Eu2+,Dy3+ phosphor beads were prepared with inorganic sodium silicate binders and coated to support Ag-doped TiO2 catalyst by the sol–gel coating method. Energy dispersive spectroscopy and X-ray photoelectron spectroscopy confirmed that Ag and TiO2 were loaded on the bead surface. Photocatalytic degradation of toluene volatile organic compound was evaluated under ultraviolet and visible light through 410 nm filters. The photocatalyst/phosphor beads of Ag-TiO2/Sr4Al14O25:Eu2+,Dy3+ decorated with 0.035 M Ag in N2 and N2-H2 atmospheres exhibited higher photocatalytic efficiencies compared with beads heat treated in air. A low amount of Ag impregnation and the reducing atmosphere of N2/N2-H2 were beneficial for enhancing photocatalytic efficiency because Ag-doping in TiO2 imparted low energy levels for visible light sensitization. The synthesized powder-free beads possess compressive strength for possible applications, and easy recovery of the photocatalysts is beneficial for preventing any secondary pollution of nano-powders.
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Yang Z, Guo Z, Zhang J, Hu Y. The development and application of metal-organic frameworks in the field of photocatalysis. RESEARCH ON CHEMICAL INTERMEDIATES 2021. [DOI: 10.1007/s11164-020-04347-w] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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5
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Meroni D, Gasparini C, Di Michele A, Ardizzone S, Bianchi CL. Ultrasound-assisted synthesis of ZnO photocatalysts for gas phase pollutant remediation: Role of the synthetic parameters and of promotion with WO 3. ULTRASONICS SONOCHEMISTRY 2020; 66:105119. [PMID: 32252008 DOI: 10.1016/j.ultsonch.2020.105119] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/30/2020] [Revised: 03/12/2020] [Accepted: 03/30/2020] [Indexed: 05/24/2023]
Abstract
The synthesis of ZnO photocatalysts by ultrasound-assisted technique was here investigated. Several experimental parameters including the zinc precursor (acetate, chloride, nitrate), sonication conditions (amplitude, pulse) and post-synthetic thermal treatment (up to 500 °C) were studied. Crystalline ZnO samples were obtained without thermal treatments due to the adopted reactant ratios and synthesis temperature. Sonication plays a major role on the morphological oxide features in terms of particle size and surface area, the latter showing a 20-fold increase with respect to conventional synthesis. Interestingly, 1 and 3 s sonication pulses led to morphological properties similar to continuous sonication. A thermal treatment at moderate temperatures (400-450 °C) promoted the loss of surface hydroxylation and the formation of lattice defects, while higher temperatures were detrimental for the sample morphology. The prepared ZnO was decorated with WO3 particles comparing an ultrasound-assisted technique using 1 s pulses with a conventional approach, giving rise to composites with promoted visible light absorption. Samples were tested towards the photocatalytic degradation of nitrogen oxides (500-1000 ppb) in humidified air under both UV and visible light. By carefully controlling the synthetic procedure, better performance were observed with respect to the commercial benchmark. Samples from ultrasound-assisted syntheses, also in the case of pulsed sonication, showed consistently better results than conventional references, in particular for ZnO-WO3 composites. The composite by ultrasound-assisted synthesis showed > 95% degradation in 180 min and doubled NOx degradation under visible light with respect to the conventional composite.
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Affiliation(s)
- Daniela Meroni
- Department of Chemistry, Università degli Studi di Milano, Italy; Consorzio INSTM, Florence, Italy.
| | - Cinzia Gasparini
- Department of Chemistry, Università degli Studi di Milano, Italy
| | | | - Silvia Ardizzone
- Department of Chemistry, Università degli Studi di Milano, Italy; Consorzio INSTM, Florence, Italy
| | - Claudia L Bianchi
- Department of Chemistry, Università degli Studi di Milano, Italy; Consorzio INSTM, Florence, Italy
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6
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Bi Y, Li J, Dong C, Mu W, Han X. Rational Construction of MnCo
2
O
4.5
Deposited TiO
2
Nanotube Array Heterostructures with Enhanced Photocatalytic Degradation of Tetracycline. CHEMPHOTOCHEM 2020. [DOI: 10.1002/cptc.201900283] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Yajun Bi
- State Key Laboratory of Urban Water Resource and Environment School of Chemistry and Chemical EngineeringHarbin Institute of Technology 92 West Da-Zhi Street Harbin 150001 China
| | - Jiadong Li
- State Key Laboratory of Urban Water Resource and Environment School of Chemistry and Chemical EngineeringHarbin Institute of Technology 92 West Da-Zhi Street Harbin 150001 China
| | - Changchang Dong
- State Key Laboratory of Urban Water Resource and Environment School of Chemistry and Chemical EngineeringHarbin Institute of Technology 92 West Da-Zhi Street Harbin 150001 China
| | - Wei Mu
- State Key Laboratory of Urban Water Resource and Environment School of Chemistry and Chemical EngineeringHarbin Institute of Technology 92 West Da-Zhi Street Harbin 150001 China
| | - Xiaojun Han
- State Key Laboratory of Urban Water Resource and Environment School of Chemistry and Chemical EngineeringHarbin Institute of Technology 92 West Da-Zhi Street Harbin 150001 China
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Ao M, Liu K, Tang X, Li Z, Peng Q, Huang J. BiOCl/TiO 2/diatomite composites with enhanced visible-light photocatalytic activity for the degradation of rhodamine B. BEILSTEIN JOURNAL OF NANOTECHNOLOGY 2019; 10:1412-1422. [PMID: 31431853 PMCID: PMC6664401 DOI: 10.3762/bjnano.10.139] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/24/2019] [Accepted: 06/27/2019] [Indexed: 06/10/2023]
Abstract
A BiOCl/TiO2/diatomite (BTD) composite was synthesized via a modified sol-gel method and precipitation/calcination method for application as a photocatalyst and shows promise for degradation of organic pollutants in wastewater upon visible-light irradiation. In the composite, diatomite was used as a carrier to support a layer of titanium dioxide (TiO2) nanoparticles and bismuth oxychloride (BiOCl) nanosheets. The results show that TiO2 nanoparticles and BiOCl nanosheets uniformly cover the surface of diatomite and bring TiO2 and BiOCl into close proximity. Rhodamine B was used as the target degradation product and visible light (λ > 400 nm) was used as the light source for the evaluation of the photocatalytic properties of the prepared BTD composite. The results show that the catalytic performance of the BTD composite under visible-light irradiation is much higher than that of TiO2 or BiOCl alone. When the molar ratio of BiOCl to TiO2 is 1:1 and the calcination temperature is 400 °C, the composite was found to exhibit the best catalytic effect. Through the study of the photocatalytic mechanism, it is shown that the strong visible-light photocatalytic activity of the BTD composite results mainly from the quick migration of photoelectrons from the conduction band of TiO2/diatomite to the surface of BiOCl, which promotes the separation effect and reduces the recombination rate of the photoelectron-hole pair. Due to the excellent catalytic performance, the BTD composite shows great potential for wide application in the field of sewage treatment driven by solar energy.
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Affiliation(s)
- Minlin Ao
- School of Minerals Processing and Bioengineering, Central South University, Changsha 410083, China
- Hunan Key Laboratory of Mineral Materials and Application, Central South University, Changsha 410083, China
| | - Kun Liu
- School of Minerals Processing and Bioengineering, Central South University, Changsha 410083, China
- Hunan Key Laboratory of Mineral Materials and Application, Central South University, Changsha 410083, China
| | - Xuekun Tang
- School of Minerals Processing and Bioengineering, Central South University, Changsha 410083, China
- Hunan Key Laboratory of Mineral Materials and Application, Central South University, Changsha 410083, China
| | - Zishun Li
- School of Minerals Processing and Bioengineering, Central South University, Changsha 410083, China
- Hunan Key Laboratory of Mineral Materials and Application, Central South University, Changsha 410083, China
| | - Qian Peng
- School of Minerals Processing and Bioengineering, Central South University, Changsha 410083, China
- Hunan Key Laboratory of Mineral Materials and Application, Central South University, Changsha 410083, China
| | - Jing Huang
- School of Minerals Processing and Bioengineering, Central South University, Changsha 410083, China
- Hunan Key Laboratory of Mineral Materials and Application, Central South University, Changsha 410083, China
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Shvalagin V, Ermokhina N, Romanovska N, Barakov R, Manorik P, Sapsay V, Shcherbakov S, Poddubnaya O, Puziy A. Mesoporous TiO2 microspheres with improved efficiency for photooxidation of volatile organic compounds. RESEARCH ON CHEMICAL INTERMEDIATES 2019. [DOI: 10.1007/s11164-019-03896-z] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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9
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Jiang N, Shang R, Heijman SGJ, Rietveld LC. High-silica zeolites for adsorption of organic micro-pollutants in water treatment: A review. WATER RESEARCH 2018; 144:145-161. [PMID: 30025266 DOI: 10.1016/j.watres.2018.07.017] [Citation(s) in RCA: 167] [Impact Index Per Article: 27.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/22/2018] [Revised: 07/05/2018] [Accepted: 07/06/2018] [Indexed: 06/08/2023]
Abstract
High-silica zeolites have been found to be effective adsorbents for the removal of organic micro-pollutants (OMPs) from impaired water, including various pharmaceuticals, personal care products, industrial chemicals, etc. In this review, the properties and fundamentals of high-silica zeolites are summarised. Recent research on mechanisms and efficiencies of OMP adsorption by high-silica zeolites are reviewed to assess the potential opportunities and challenges for the application of high-silica zeolites for OMP adsorption in water treatment. It is concluded that the adsorption capacities are well-related to surface hydrophobicity/hydrophilicity and structural features, e.g. micropore volume and pore size of high-silica zeolites, as well as the properties of OMPs. By using high-silica zeolites, the undesired competitive adsorption of background organic matter (BOM) in natural water could potentially be prevented. In addition, oxidative regeneration could be applied on-site to restore the adsorption capacity of zeolites for OMPs and prevent the toxic residues from re-entering the environment.
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Affiliation(s)
- Nan Jiang
- Department of Water Management, Faculty of Civil Engineering and Geosciences, Delft University of Technology, P.O. Box 5048, 2600, GA Delft, The Netherlands.
| | - Ran Shang
- Department of Water Management, Faculty of Civil Engineering and Geosciences, Delft University of Technology, P.O. Box 5048, 2600, GA Delft, The Netherlands.
| | - Sebastiaan G J Heijman
- Department of Water Management, Faculty of Civil Engineering and Geosciences, Delft University of Technology, P.O. Box 5048, 2600, GA Delft, The Netherlands
| | - Luuk C Rietveld
- Department of Water Management, Faculty of Civil Engineering and Geosciences, Delft University of Technology, P.O. Box 5048, 2600, GA Delft, The Netherlands
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10
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Heterojunction of TiO2 nanoparticle embedded into ZSM5 to 2D and 3D layered-structures of MoS2 nanosheets fabricated by pulsed laser ablation and microwave technique in deionized water: structurally enhanced photocatalytic performance. APPLIED NANOSCIENCE 2018. [DOI: 10.1007/s13204-018-0902-x] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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11
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Tian M, Thind SS, Dondapati JS, Li X, Chen A. Electrochemical oxidation of 4-chlorophenol for wastewater treatment using highly active UV treated TiO 2 nanotubes. CHEMOSPHERE 2018; 209:182-190. [PMID: 29929124 DOI: 10.1016/j.chemosphere.2018.06.042] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/29/2018] [Revised: 05/24/2018] [Accepted: 06/04/2018] [Indexed: 06/08/2023]
Abstract
In the present work, we report on a facile UV treatment approach for enhancing the electrocatalytic activity of TiO2 nanotubes. The TiO2 nanotubes were prepared using an anodization oxidation method by applying a voltage of 40 V for 8 h in a DMSO + 2% HF solution, and further treated under UV light irradiation. Compared with Pt and untreated TiO2 nanotubes, the UV treated electrode exhibited a superior electrocatalytic activity toward the oxidation of 4-chlorophenol (4-ClPh). The effects of current density and temperature on the electrochemical oxidation of the 4-ClPh were also systematically investigated. The high electrocatalytic activity of the UV treated TiO2 nanotubes was further confirmed by the electrochemical oxidation of other persistent organic pollutants including phenol, 2-, 3-, 4-nitrophenol, and 4-aminophenol. The total organic carbon (TOC) analysis revealed that over 90% 4-ClPh was removed when the UV treated TiO2 electrode was employed and the rate constant was 16 times faster than that of the untreated TiO2 electrode; whereas only 60% 4-ClPh was eliminated at the Pt electrode under the same conditions. This dramatically improved electrocatalytic activity might be attributed to the enhanced donor density, conductivity, and high overpotential for oxygen evolution. Our results demonstrated that the application of the UV treatment to the TiO2 nanotubes enhanced their electrochemical activity and energy consumption efficiency significantly, which is highly desirable for the abatement of persistent organic pollutants.
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Affiliation(s)
- Min Tian
- Department of Chemistry, Lakehead University, 955 Oliver Road, Thunder Bay, Ontario, P7B 5E1, Canada
| | - Sapanbir S Thind
- Department of Chemistry, Lakehead University, 955 Oliver Road, Thunder Bay, Ontario, P7B 5E1, Canada
| | - Jesse S Dondapati
- Electrochemical Technology Centre, Department of Chemistry, University of Guelph, 50 Stone Road East, Guelph, Ontario, N1G 2W1, Canada
| | - Xinyong Li
- State Key Laboratory of Fine Chemicals, Key Laboratory of Industrial Ecology and Environmental Engineering (MOE), School of Environmental Science and Technology, Dalian University of Technology, Dalian, 116024, China
| | - Aicheng Chen
- Department of Chemistry, Lakehead University, 955 Oliver Road, Thunder Bay, Ontario, P7B 5E1, Canada; Electrochemical Technology Centre, Department of Chemistry, University of Guelph, 50 Stone Road East, Guelph, Ontario, N1G 2W1, Canada.
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12
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Facile synthesis of nano-TiO 2 /stellerite composite with efficient photocatalytic degradation of phenol. ADV POWDER TECHNOL 2018. [DOI: 10.1016/j.apt.2018.03.030] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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13
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Elghniji K, Elaloui E, Moussaoui Y. Coating of anatase titania on clinoptilolite by metal organic chemical vapor deposition method: enhanced mesoporosity and photocatalytic activity. CHEMICAL PAPERS 2017. [DOI: 10.1007/s11696-017-0350-1] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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14
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Abdel Salam M, Al-Johani H. Enhancement of visible light irradiation photocatalytic activity of
$$\hbox {SrTiO}_{3}$$
SrTiO
3
nanoparticles by Pt doping for oxidation of cyclohexane. J CHEM SCI 2017. [DOI: 10.1007/s12039-017-1369-0] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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15
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Latha P, Karuthapandian S. Novel, Facile and Swift Technique for Synthesis of CeO2 Nanocubes Immobilized on Zeolite for Removal of CR and MO Dye. J CLUST SCI 2017. [DOI: 10.1007/s10876-017-1292-z] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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16
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Involving CeVO4 in improving the photocatalytic activity of a Bi2WO6/allophane composite for the degradation of gaseous acetaldehyde under visible light. Colloids Surf A Physicochem Eng Asp 2017. [DOI: 10.1016/j.colsurfa.2017.06.047] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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17
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Bandara WRN, de Silva RM, de Silva KMN, Dahanayake D, Gunasekara S, Thanabalasingam K. Is nano ZrO2 a better photocatalyst than nano TiO2 for degradation of plastics? RSC Adv 2017. [DOI: 10.1039/c7ra08324f] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The environmental accumulation of plastic is a huge problem due to its low degradability.
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Affiliation(s)
| | - Rohini M. de Silva
- Department of Chemistry
- Faculty of Science
- University of Colombo
- Colombo 03
- Sri Lanka
| | - K. M. Nalin de Silva
- Department of Chemistry
- Faculty of Science
- University of Colombo
- Colombo 03
- Sri Lanka
| | - Damayanthi Dahanayake
- Sri Lanka Institute of Nanotechnology (SLINTEC)
- Nanotechnology and Science Park
- Homagama
- Sri Lanka
| | - Sunanda Gunasekara
- Sri Lanka Institute of Nanotechnology (SLINTEC)
- Nanotechnology and Science Park
- Homagama
- Sri Lanka
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