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Díez AM, Pazos M, Sanromán MÁ, Naranjo HV, Mayer J, Kolen'ko YV. Photocatalytic solid-phase degradation of polyethylene with fluoride-doped titania under low consumption ultraviolet radiation. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2023; 329:117044. [PMID: 36584507 DOI: 10.1016/j.jenvman.2022.117044] [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: 10/03/2022] [Revised: 12/02/2022] [Accepted: 12/13/2022] [Indexed: 06/17/2023]
Abstract
Photodegradation of plastic in solid-phase requires the polymer to be composited with an efficient photocatalyst. We report herein the successful synthesis and characterization of fluoride-doped-TiO2 and its applicability, for the first time, on solid-phase photodegradation of polyethylene films. Nearly half weight loss of polyethylene, containing only 2% of the photocatalyst, is eliminated after three weeks of ultraviolet A radiation using a low consumption light emitting diode lamp, defeating previously reported data. The half-life time of the plastic was around 3 weeks, highlighting the viability of this process for real applications. Results were compared to raw PE and PE composite with well-known TiO2, resulting in, respectively, 0 and 26% of weight loss. The degradation process was monitored by optical microscopy, scanning electron microscopy, X-ray diffraction, thermogravimetric analysis, Fourier transform infrared and X-ray photoelectron spectroscopy, which revealed the formation of plastic cracks, loss of polyethylene crystallinity and thus stability, the oxidation of C-H bonds and the oxidized state of the surface compounds during photodegradation. The obtained results open a path for the future production of cleaner and self-photodegradable plastics, where the photocatalyst would be introduced in all the manufactured plastics, making possible the quicker photodegradation of the plastics that end up on the environment and the plastics reaching wastewater treatment plants.
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Affiliation(s)
- Aida M Díez
- Nanochemistry Research Group, International Iberian Nanotechnology Laboratory (INL), Braga, Portugal; CINTECX, Universidade de Vigo, Grupo de Bioingeniería y Procesos Sostenibles, Departamento de Ingeniería Química, Campus Lagoas-Marcosende, 36310 Vigo, Spain.
| | - Marta Pazos
- CINTECX, Universidade de Vigo, Grupo de Bioingeniería y Procesos Sostenibles, Departamento de Ingeniería Química, Campus Lagoas-Marcosende, 36310 Vigo, Spain
| | - M Ángeles Sanromán
- CINTECX, Universidade de Vigo, Grupo de Bioingeniería y Procesos Sostenibles, Departamento de Ingeniería Química, Campus Lagoas-Marcosende, 36310 Vigo, Spain
| | - Helen Valencia Naranjo
- Central Facility for Electron Microscopy (GFE), RWTH Aachen University, D-52074 Aachen, Germany
| | - Joachim Mayer
- Central Facility for Electron Microscopy (GFE), RWTH Aachen University, D-52074 Aachen, Germany
| | - Yury V Kolen'ko
- Nanochemistry Research Group, International Iberian Nanotechnology Laboratory (INL), Braga, Portugal
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Zheng K, Wu Y, Hu Z, Wang S, Jiao X, Zhu J, Sun Y, Xie Y. Progress and perspective for conversion of plastic wastes into valuable chemicals. Chem Soc Rev 2023; 52:8-29. [PMID: 36468343 DOI: 10.1039/d2cs00688j] [Citation(s) in RCA: 28] [Impact Index Per Article: 28.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/09/2022]
Abstract
Today, discarded plastics in nature have caused serious "white pollution", however these plastic wastes contain abundant carbon resources that could serve as the feedstock to produce commodities. Because of this, it is requisite to convert these plastic wastes into valuable chemicals. Herein, the state-of-the-art techniques for plastic conversion are divided into two categories, those performed under violent conditions and mild conditions, in which the conversion mechanisms are discussed. The strategies under violent conditions are closer to practical application thanks to their excellent conversion efficiencies, while the strategies under mild conditions are more environmentally friendly, showing enormous development potential in the future. We summarize in detail the pyrolysis, hydropyrolysis, solvolysis and microwave-initiated catalysis for bond cleavage in plastic wastes at temperatures ranging from 448 to 973 K. Also, we overview the photocatalysis, electrocatalysis and biocatalysis for bond cleavage in plastic wastes at near and even normal temperature and pressure. Finally, we present some suggestions and outlooks concerning the improvement of current techniques and in-depth mechanisms of investigation for conversion of plastics into valuable chemicals.
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Affiliation(s)
- Kai Zheng
- Hefei National Research Center for Physical Sciences at Microscale, University of Science and Technology of China, Hefei, 230026, P. R. China.
| | - Yang Wu
- Hefei National Research Center for Physical Sciences at Microscale, University of Science and Technology of China, Hefei, 230026, P. R. China.
| | - Zexun Hu
- Hefei National Research Center for Physical Sciences at Microscale, University of Science and Technology of China, Hefei, 230026, P. R. China.
| | - Shumin Wang
- Hefei National Research Center for Physical Sciences at Microscale, University of Science and Technology of China, Hefei, 230026, P. R. China.
| | - Xingchen Jiao
- Hefei National Research Center for Physical Sciences at Microscale, University of Science and Technology of China, Hefei, 230026, P. R. China. .,Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, Wuxi 214122, China
| | - Juncheng Zhu
- Hefei National Research Center for Physical Sciences at Microscale, University of Science and Technology of China, Hefei, 230026, P. R. China.
| | - Yongfu Sun
- Hefei National Research Center for Physical Sciences at Microscale, University of Science and Technology of China, Hefei, 230026, P. R. China.
| | - Yi Xie
- Hefei National Research Center for Physical Sciences at Microscale, University of Science and Technology of China, Hefei, 230026, P. R. China.
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Golmohammadi M, Fatemeh Musavi S, Habibi M, Maleki R, Golgoli M, Zargar M, Dumée LF, Baroutian S, Razmjou A. Molecular mechanisms of microplastics degradation: A review. Sep Purif Technol 2022. [DOI: 10.1016/j.seppur.2022.122906] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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4
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Rex M C, Mukherjee A. Prospects of TiO2-based photocatalytic degradation of microplastic leachates related disposable facemask, a major COVID-19 waste. FRONTIERS IN NANOTECHNOLOGY 2022. [DOI: 10.3389/fnano.2022.1072227] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Abstract
COVID-19 is one of the serious catastrophes that have a substantial influence on human health and the environment. Diverse preventive actions were implemented globally to limit its spread and transmission. Personnel protective equipment (PPE) was an important part of these control approaches. But unfortunately, these types of PPE mainly comprise plastics, which sparked challenges in the management of plastic waste. Disposable face masks (DFM) are one of the efficient strategies used across the world to ward off disease transmission. DFMs can contribute to micro and nano plastic pollution as the plastic present in the mask may degrade when exposed to certain environmental conditions. Microplastics (MPs) can enter the food chain and devastate human health. Recognizing the possible environmental risks associated with the inappropriate disposal of masks, it is crucial to avert it from becoming the next plastic crisis. To address this environmental threat, titanium dioxide (TiO2)-based photocatalytic degradation (PCD) of MPs is one of the promising approaches. TiO2-based photocatalysts exhibit excellent plastic degradation potential due to their outstanding photocatalytic ability, cost efficiency, chemical, and thermal stability. In this review, we have discussed the reports on COVID-19 waste generation, the limitation of current waste management techniques, and the environmental impact of MPs leachates from DFMs. Mainly, the prominence of TiO2 in the PCD and the applications of TiO2-based photocatalysts in MPs degradation are the prime highlights of this review. Additionally, various synthesis methods to enhance the photocatalytic performance of TiO2 and the mechanism of PCD are also discussed. Furthermore, current challenges and the future research perspective on the improvement of this approach have been proposed.
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5
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Fabrication and characterizations of graphene/(Si, Mo)-codoped TiO2 hybrid thin films for architecture environment self-cleaning application. CHEMICAL PAPERS 2022. [DOI: 10.1007/s11696-022-02229-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Wang X, Zhang R, Li Z, Yan B. Adsorption properties and influencing factors of Cu(II) on polystyrene and polyethylene terephthalate microplastics in seawater. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 812:152573. [PMID: 34954173 DOI: 10.1016/j.scitotenv.2021.152573] [Citation(s) in RCA: 28] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/24/2021] [Revised: 12/14/2021] [Accepted: 12/16/2021] [Indexed: 06/14/2023]
Abstract
As an emerging contamination in the ocean, microplastics can act as effective vectors of pollutants, the ecological risks caused by the combined pollution of microplastics and other pollutants have attracted growing attention. In this work, Copper (Cu(II)) was chosen as the classic pollutant, polystyrene (PS) and polyethylene terephthalate (PET) pellets were used as the typical marine microplastics, the adsorption performance of Cu(II) on PS and PET beads was investigated by adsorption kinetics and isotherm experiments, and other influencing conditions, such as pH, salinity, coexisting heavy metals ions and aging treatment, were evaluated. The results indicated that the adsorption behavior of Cu(II) on PS and PET was spontaneous and endothermic in the simulated seawater environment, and the batch experimental data can be effectively described by pseudo-second-order model and Freundlich isothermal model. Besides, the adsorption capacity of microplastics for Cu(II) was the best at pH 7, the change of salinity had no obvious effect on the adsorption in the natural marine environment. Moreover, co-existence of lead (Pb(II)) exhibited evident impacts on Cu(II) sorption onto PS and PET, which confirmed the adsorption competition effect between them. Additionally, high temperature aging treatment of microplastics in different environments for different duration time could obviously affect the properties of microplastics. It was found that the microplastics after being exposed to high temperature environment in the air for 168 h showed relatively stronger adsorption amount for Cu(II). In summary, these findings suggested that electrostatic interaction and distributed diffusion mechanisms may be the main mechanisms of adsorption, while no new functional groups were generated after the adsorption, indicating that physisorption may dominate the adsorption performance of PS and PET pellets for Cu(II). This study provides supplementary insights into the role of microplastics as carriers of heavy metals in the marine environment.
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Affiliation(s)
- Xingxing Wang
- College of Marine and Environmental Sciences, Tianjin University of Science and Technology, Tianjin 300457, PR China
| | - Ruixin Zhang
- College of Marine and Environmental Sciences, Tianjin University of Science and Technology, Tianjin 300457, PR China
| | - Zhaoying Li
- College of Marine and Environmental Sciences, Tianjin University of Science and Technology, Tianjin 300457, PR China
| | - Bo Yan
- College of Marine and Environmental Sciences, Tianjin University of Science and Technology, Tianjin 300457, PR China; Key Laboratory of Marine Resource Chemistry and Food Technology (TUST), Ministry of Education, Tianjin 300457, PR China; Tianjin Marine Environmental Protection and Restoration Technology Engineering Center, Tianjin 300457, PR China; Tianjin Key Laboratory of Marine Resources and Chemistry, Tianjin 300457, PR China.
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7
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Degradation of Tetracycline on SiO2-TiO2-C Aerogel Photocatalysts under Visible Light. MATERIALS 2022; 15:ma15051963. [PMID: 35269195 PMCID: PMC8911664 DOI: 10.3390/ma15051963] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/06/2022] [Revised: 02/19/2022] [Accepted: 02/21/2022] [Indexed: 02/04/2023]
Abstract
SiO2-TiO2-C aerogel photocatalysts with different carbon loadings were synthesized by using sol-gel chemistry. The anatase crystal and nonmetal carbon dopant were introduced during the sol preparation and formed by hydrothermal treatment, which can simultaneously enhance the adsorption ability and visible light photo-activity. A high surface area (759 g cm−3) SiO2-TiO2-C aerogel composite can remove up to 80% tetracycline hydrochloride within 180 min under visible light. The characterization of the gel structures shows that the homogeneous dispersion of O, Si, Ti and C in the skeleton, indicating that hydrothermal synthesis could provide a very feasible way for the preparation of composite materials. n(C):n(Ti) molar ratio of 3.5 gives the best catalytic performance of the hybrid aerogel, and the cyclic test still confirms over 60% degradation activity after seven use cycles. All catalysis reaction followed the pseudo-first-order rate reaction with high correlation coefficient. The electrons and holes in the compound could be effectively restrained with doping proper amount of C, and ESR results indicate that the oxidation process was dominated by the hydroxyl radical (•OH) and superoxide radical (•O2−) generated in the system.
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Fakhri LA, Ghanbarzadeh B, Dehghannya J, Hosseini M, Dadashi S. Photo-catalytic and biotic degradation of polystyrene packaging film: Effect of zinc oxide photocatalyst nanoparticles and nanoclay. CHEMOSPHERE 2021; 283:130972. [PMID: 34467948 DOI: 10.1016/j.chemosphere.2021.130972] [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: 12/14/2020] [Revised: 04/26/2021] [Accepted: 05/19/2021] [Indexed: 06/13/2023]
Abstract
Synergistic effect of zinc oxide nanoparticles (ZnO-NPs) as photocatalyst and organonanoclay (ONC) as biodegradable promoter on the degradation of polystyrene (PS) film was investigated. The films were exposed to ultraviolet irradiation under ambient air at room temperature for photo-catalytic degradation and then submitted to biodegradation test in soil using respirometric procedure. Fourier-transform infrared and ultraviolet-visible spectroscopy, thermogravimetric analysis, colorimeter technique, contact angle measurement, and the carbon dioxide evolution results showed higher photo- and biodegradation efficiency of PS-ONC-ZnO nanocomposite compared to the neat PS, PS-ONC and PS-ZnO nanocomposites. Thermal stability, optical band gap, and water contact angle of photo-degraded PS-ONC-ZnO nanocomposite decreased by 11.37, 18.33 and 63.99%, respectively, while that of PS film was only 6.20, 6.44 and 5.84%, respectively. The photo-degraded PS-ONC-ZnO and PS-ZnO film indicated a biodegradation percentage value of 3.3 and 2.1%, respectively, over 16 weeks of incubation in soil. The possible degradation mechanism of nanocomposites was briefly discussed.
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Affiliation(s)
- Leila Abolghasemi Fakhri
- Department of Food Science and Technology, Faculty of Agriculture, University of Tabriz, P. O. Box 51666-16471, Iran
| | - Babak Ghanbarzadeh
- Department of Food Science and Technology, Faculty of Agriculture, University of Tabriz, P. O. Box 51666-16471, Iran; Department of Food Engineering, Faculty of Engineering, Near East University, P. O. Box 99138, Nicosia, Cyprus, Mersin 10, Turkey.
| | - Jalal Dehghannya
- Department of Food Science and Technology, Faculty of Agriculture, University of Tabriz, P. O. Box 51666-16471, Iran
| | - Mohammadyar Hosseini
- Department of Food Science and Technology, Faculty of Agriculture, University of Ilam, Iran
| | - Saeed Dadashi
- Department of Food Science and Technology, Faculty of Agriculture, University of Tabriz, P. O. Box 51666-16471, Iran
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Nabi I, Bacha AUR, Ahmad F, Zhang L. Application of titanium dioxide for the photocatalytic degradation of macro- and micro-plastics: A review. JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING 2021; 9:105964. [DOI: 10.1016/j.jece.2021.105964] [Citation(s) in RCA: 37] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/02/2023]
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10
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Aubriet F. Investigation of polymer-based composites by laser desorption/ionization study of their photo-oxidative aging. RAPID COMMUNICATIONS IN MASS SPECTROMETRY : RCM 2020; 34 Suppl 2:e8708. [PMID: 31883272 DOI: 10.1002/rcm.8708] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/25/2019] [Revised: 11/26/2019] [Accepted: 12/17/2019] [Indexed: 06/10/2023]
Abstract
RATIONALE Polybutadiene (PB) is one of the most widely used polymers. Its aging occurs by reaction with oxygen under illumination and may modify its mechanical and/or aesthetic properties. To modify its properties, organic and/or inorganic compounds are generally added to PB. The aging of such composite materials is poorly known. METHODS PB and its mixtures with TiO2 and/or the Orange 13 pigment are subjected to an accelerated photo-oxidative aging step for one week. The analysis of PB and its composites with regard to their composition and the aging time is carried out by 266 nm and/or 355 nm laser desorption/ionization Fourier transform ion cyclotron resonance mass spectrometry (LDI-FTICR-MS). RESULTS Both PB and its degradation products are detected by (+) LDI-FTICR-MS. The oxidation mechanism of PB is not significantly affected by the used organic or inorganic fillers, which results from the cleavage of the polymer chain and the formation of carbonyl compounds. The crosslinking of PB is significantly reduced by the two investigated fillers. Analysis in negative mode [(-) LDI-FTICR-MS] ensures the specific detection of the Orange 13 pigment. CONCLUSIONS LDI-FTICR-MS has demonstrated its ability to provide relevant information on the degradation of polymer-based composites. The main advantages of this approach are its ability to probe the surface, which is specifically affected by photo-oxidation aging processes, and to access the insoluble degradation compounds.
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Affiliation(s)
- Frédéric Aubriet
- Laboratoire de Chimie et de Physique - Approches Multi-échelles des Milieux Complexes (LCP-A2MC), FR 2843 Institut Jean Barriol de Chimie et Physique Moléculaires et Biomoléculaires, FR 3624 Réseau National de Spectrométrie de Masse FT-ICR à très haut champ, Université de Lorraine, ICPM, 1 boulevard Arago, 57070, Metz Cedex 03, France
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11
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Complete Photocatalytic Mineralization of Microplastic on TiO 2 Nanoparticle Film. iScience 2020; 23:101326. [PMID: 32659724 PMCID: PMC7358720 DOI: 10.1016/j.isci.2020.101326] [Citation(s) in RCA: 103] [Impact Index Per Article: 25.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2020] [Revised: 06/11/2020] [Accepted: 06/26/2020] [Indexed: 12/02/2022] Open
Abstract
Recently, the environmental impacts of microplastics have received extensive attention owing to their accumulation in the environment. However, developing efficient technology for the control and purification of microplastics is still a big challenge. Herein, we investigated the photocatalytic degradation of typical microplastics such as polystyrene (PS) microspheres and polyethylene (PE) over TiO2 nanoparticle films under UV light irradiation. TiO2 nanoparticle film made with Triton X-100 showed complete mineralization (98.40%) of 400-nm PS in 12 h, while degradation for varying sizes of PS was also studied. PE degradation experiment presented a high photodegradation rate after 36 h. CO2 was found as the main end product. The degradation mechanism and intermediates were studied by in situ DRIFTS and HPPI-TOFMS, showing the generation of hydroxyl, carbonyl, and carbon-hydrogen groups during the photodegradation of PS. This study provides a green and cost-efficient strategy for the control of microplastics contamination in the environment. Efficient degradation of microplastics under UV light by TiO2 film Triton-based TiO2 film showed higher photocatalytic performance The role of radical species during microplastics degradation was elucidated Degradation mechanism and reaction intermediates were explored
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Ding L, Mao R, Ma S, Guo X, Zhu L. High temperature depended on the ageing mechanism of microplastics under different environmental conditions and its effect on the distribution of organic pollutants. WATER RESEARCH 2020; 174:115634. [PMID: 32113014 DOI: 10.1016/j.watres.2020.115634] [Citation(s) in RCA: 206] [Impact Index Per Article: 51.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/30/2019] [Revised: 02/13/2020] [Accepted: 02/18/2020] [Indexed: 05/16/2023]
Abstract
Microplastics, as an emerging class of pollutants has become a global concern, and is receiving increasing attention. Interestingly, microplastics are always in their ageing process when they enter the real environment. Our study investigated the ageing properties of polystyrene (PS) plastics in air, pure water and seawater environments at 75 °C. A two-dimensional (2D) Fourier transform infrared (FTIR) correlation spectroscopy (COS) analysis was used to better understand the ageing mechanism of the PS plastics. Based on the 2D-COS analysis, different ageing mechanisms were identified under different ageing conditions, such as an ageing sequence of aged-PS particle functional groups in air: 1601(CC) > 1050(C-O)>1453(C-H)>1493(C-H)>1375(C-OH)>1666(CO). Among the functional group changes, O-functional groups (C-O, C-OH and CO) were introduced during the ageing process. Moreover, for pristine PS particles, hydrophobicity was a major factor for the interaction between the microplastics and organic pollutants. For aged-PS particles, their adsorption capacities were significantly enhanced as the degree of ageing increased. The ageing degree of PS was highly responsible for increasing of the specific surface area and the increase in oxygen-containing surface groups. Furthermore, there was a significant enhancement in the adsorption affinity for antibiotic contaminants than for polycyclic aromatic hydrocarbon contaminants. Aged PS particles had little adsorption of polycyclic aromatic hydrocarbons, because the presence of oxygen-containing surface groups on the aged PS plastics might allow the formation of hydrogen bonds with the surrounding water molecules. Overall, a 2D-COS analysis was an effective method for understanding the ageing process of microplastics under different environmental conditions at high temperature. These results also clearly demonstrated the characteristics and mechanisms of the interaction between aged-microplastics and organic pollutants, which could be useful for understanding the environmental behavior of co-existing pollutants.
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Affiliation(s)
- Ling Ding
- College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi, 712100, China
| | - Ruofan Mao
- College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi, 712100, China
| | - Sirui Ma
- College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi, 712100, China
| | - Xuetao Guo
- College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi, 712100, China; Key Laboratory of Plant Nutrition and the Agro-environment in Northwest China, Ministry of Agriculture, Yangling, Shaanxi, 712100, China.
| | - Lingyan Zhu
- College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi, 712100, China; Key Laboratory of Plant Nutrition and the Agro-environment in Northwest China, Ministry of Agriculture, Yangling, Shaanxi, 712100, China
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Performance of photo-degradation and thermo-degradation of polyethylene with photo-catalysts and thermo-oxidant additives. Polym Bull (Berl) 2019. [DOI: 10.1007/s00289-019-02813-z] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
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Abstract
In this study, polymer composites based on polyvinyl borate (PVB) with titanium dioxide (TiO2) nanoparticles were prepared through the condensation reaction of polyvinyl alcohol and boric acid in the presence of TiO2 nanoparticles. The solid-phase photocatalytic degradation of the polymer composites under UV light irradiation was investigated and compared with that of the pure PVB with the aid of weight loss measurements. The introduction of the photocatalyst nanoparticles in PVB enhanced the solid-phase photocatalytic degradation of the polymer matrix under UV light irradiation. The structural and morphological properties of PVB/TiO2 composites were analyzed by transmission electron microscopy (TEM), scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FTIR), thermogravimetric analysis (TGA), and UV-Vis spectroscopy, respectively. FTIR analysis revealed that PVB synthesis was successfully carried out in the presence of the photocatalyst nanoparticles. According to the morphological analyses, TiO2 nanoparticles were well dispersed in the PVB matrix.
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15
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Wang LL, He HY, Li Q, Ren ZQ. Photocatalytic activities of SnS-reduced graphene oxide by the photodegradation of malachite green in water. ACTA ACUST UNITED AC 2016. [DOI: 10.1179/1433075x15y.0000000056] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
Affiliation(s)
- L.-L. Wang
- Key Laboratory of Auxiliary Chemistry & Technology for Chemical Industry, Ministry of Education, Shaanxi University of Science & Technology, Xi'an, Shaanxi, 710021, China
| | - H.-Y. He
- Key Laboratory of Auxiliary Chemistry & Technology for Chemical Industry, Ministry of Education, Shaanxi University of Science & Technology, Xi'an, Shaanxi, 710021, China
| | - Q. Li
- Key Laboratory of Auxiliary Chemistry & Technology for Chemical Industry, Ministry of Education, Shaanxi University of Science & Technology, Xi'an, Shaanxi, 710021, China
| | - Z.-Q. Ren
- Key Laboratory of Auxiliary Chemistry & Technology for Chemical Industry, Ministry of Education, Shaanxi University of Science & Technology, Xi'an, Shaanxi, 710021, China
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Difference in polystyrene oxo-biodegradation behavior between copper phthalocyanine modified TiO2 and ZnO paint photocatalyst systems. Polym Degrad Stab 2015. [DOI: 10.1016/j.polymdegradstab.2015.06.002] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Fathi R. Degradation of Asphaltene on TiO 2Nanospherical Particles Under UV Illumination and Verification via Variation in Wettability and FTIR Spectroscopy. J DISPER SCI TECHNOL 2015. [DOI: 10.1080/01932691.2014.985314] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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18
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Singh S, Singh PK, Mahalingam H. Novel Floating Ag+-Doped TiO2/Polystyrene Photocatalysts for the Treatment of Dye Wastewater. Ind Eng Chem Res 2014. [DOI: 10.1021/ie502911a] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Seema Singh
- Jaypee University of Engineering and Technology (JUET), A.B. Road, Raghogarh, Guna, Madhya Pradesh 473226, India
| | - Pramod Kumar Singh
- Jaypee University of Engineering and Technology (JUET), A.B. Road, Raghogarh, Guna, Madhya Pradesh 473226, India
| | - Hari Mahalingam
- Jaypee University of Engineering and Technology (JUET), A.B. Road, Raghogarh, Guna, Madhya Pradesh 473226, India
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