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Du Y, Ye X, Hui Z, Jiao D, Xie Y, Chen S, Ding J. Synergistic effect of adsorption-photocatalytic reduction of Cr(VI) in wastewater with biochar/TiO 2 composite under simulated sunlight illumination. Phys Chem Chem Phys 2024; 26:15891-15901. [PMID: 38805238 DOI: 10.1039/d4cp01226g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/29/2024]
Abstract
Photocatalysis, which is an alternative technology to conventional methods, utilizes solar energy as the driving force to address environmental concerns and has attracted widespread attention from chemists worldwide. In this study, a series of photocatalytic materials composed of agricultural waste and titanium dioxide (TiO2) nanomaterial was prepared for the synergistic adsorption-photocatalytic reduction of hexavalent chromium in wastewater under mild conditions. The results showed that the TiO2 nanomaterial exhibited a higher photogenerated carrier separation efficiency and performance for the adsorption-photocatalytic reduction of Cr(VI) after loading straw biochar (BC). When the loading amount of BC was 0.025 g (i.e., TBC-3), the removal efficiency of Cr(VI) was as high as 99.9% under sunlight irradiation for 25 min, which was 2.9 and 3.5 times higher than that of pure TiO2 and BC samples, respectively. Additionally, after four cycles of experiments, the removal efficiency of Cr(VI) by TBC-3 remained at about 93.0%, proving its good chemical ability in our reaction system. Its excellent adsorption-photocatalytic performance is mainly attributed to the synergistic effect of the strong adsorption of BC and the outstanding photocatalytic performance of TiO2. Finally, the possible mechanism for the synergistic adsorption-photocatalytic reduction on BC/TiO2 to remove the highly toxic Cr(VI) in wastewater was proposed.
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Affiliation(s)
- Yadong Du
- College of Resources and Environment, Anhui Science and Technology University, Fengyang, Anhui 233100, P. R. China.
- College of Chemistry and Materials Engineering, Anhui Science and Technology University, Bengbu, Anhui 233030, P. R. China.
| | - Xiangju Ye
- College of Chemistry and Materials Engineering, Anhui Science and Technology University, Bengbu, Anhui 233030, P. R. China.
| | - Zhenzhen Hui
- College of Chemistry and Materials Engineering, Anhui Science and Technology University, Bengbu, Anhui 233030, P. R. China.
| | - Die Jiao
- College of Resources and Environment, Anhui Science and Technology University, Fengyang, Anhui 233100, P. R. China.
| | - Yue Xie
- College of Resources and Environment, Anhui Science and Technology University, Fengyang, Anhui 233100, P. R. China.
| | - Shifu Chen
- College of Chemistry and Materials Science, Huaibei Normal University, Huaibei, 235000, P. R. China.
| | - Jun Ding
- Anhui Haohong Biotechnology Co., Ltd, Hefei, Anhui 230026, P. R. China
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Michalik A, Napruszewska BD, Duraczyńska D, Walczyk A, Serwicka EM. Composites of Montmorillonite and Titania Nanoparticles Prepared by Inverse Microemulsion Method: Physico-Chemical Characterization. NANOMATERIALS (BASEL, SWITZERLAND) 2023; 13:686. [PMID: 36839054 PMCID: PMC9967158 DOI: 10.3390/nano13040686] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/31/2022] [Revised: 01/30/2023] [Accepted: 02/06/2023] [Indexed: 06/18/2023]
Abstract
TiO2/montmorillonite composites were synthesized using inverse micellar route for the preparation of titania nanoparticles (4-6 nm diameter) in 1-hexanol and for the dispersion of one of the clay components. Two series of composites were obtained: one derived from cetyltrimethylammonium organomontmorillonite (CTA-Mt), exfoliated in 1-hexanol, and the other from sodium form of montmorillonite (Na-Mt) dispersed by formation of an inverse microemulsion in 1-hexanol. The TiO2 content ranged from 16 to 64 wt.%. The composites were characterized with X-ray diffraction, scanning/transmission electron microscopy/energy dispersive X-ray spectroscopy, thermal analysis, and N2 adsorption-desorption isotherms. The Na-Mt-derived component was shown to undergo transformation to CTA-Mt, as indicated by basal spacing of 17.5 nm, due to the interaction with the CTABr surfactant in inverse microemulsion. It was also better dispersed and intermixed with TiO2 nanoparticles. As a result, the TiO2/Na-Mt series displayed superior textural properties, with specific surface area up to 256 m2g-1 and pore volume up to 0.247 cm3g-1 compared with 208 m2g-1 and 0.231 cm3g-1, respectively, for the TiO2/CTA-Mt counterpart. Members of both series were uniformly mesoporous, with the dominant pore size around 5 nm, i.e., comparable with the dimensions of titania nanoparticles. The advantage of the adopted synthesis method is discussed in the context of other preparative procedures used for manufacturing of titania-clay composites.
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Nouacer S, Djellabi R. Easy-handling semi-floating TiO 2-based aerogel for solar photocatalytic water depollution. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:22388-22395. [PMID: 36287366 DOI: 10.1007/s11356-022-23772-5] [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: 08/10/2022] [Accepted: 10/18/2022] [Indexed: 06/16/2023]
Abstract
One of the capital issues of photocatalytic technology is how to use photocatalytic materials in real world conditions. Suspension photocatalysts are the most effective, while the handling and recovery of nanoparticles are very challenging and costly. Herein, we report the design of semi-floating aerogel TiO2-based photocatalyst for the oxidation of dyes and photoreduction of Cr(VI). TiO2 aerogel-based photocatalyst was fabricated through in situ polymerization using borax, poly(vinyl alcohol) and polyvinylidene in the presence of H2O2 as a catalyst. Cubic TiO2 aerogel of few centimetres was designed for the photocatalytic tests under solar light irradiation. TiO2 aerogel showed a good photoactivity against the oxidation of three types of dyes and Cr(VI) photoreduction. In terms of dyes, the kinetics of methylene blue oxidation was the fastest as compared to rhodamine B and methyl red, while, a total reduction of Cr(VI) at 10 ppm was obtained within 30 min after the addition of tartaric acid as hole scavenger. TiO2 aerogel can be easily recovered, washed and recycled. TiO2 aerogel can move freely from the top to the deep solution. The semi-floating property could be an advantage to enhance the mass transfer along with bulk solution, as compared to totally floating-based photocatalysts.
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Affiliation(s)
- Sana Nouacer
- Laboratory of Water Treatment and Valorization of Industrial Wastes, Chemistry Department, Faculty of Sciences, Badji-Mokhtar University, BP12 2300, Annaba, Algeria
- École Nationale Supérieure Des Mines Et MétallurgieENSMM, Ex CEFOS Chaiba, BP 233 RP Annaba, W129, Sidi Amar, Algeria
| | - Ridha Djellabi
- Department of Chemical Engineering, Universitat Rovira I Virgili, 43007, Tarragona, Spain.
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Enhanced Photocatalytic Kinetics Using HDTMA Coated TiO2-Smectite Composite for the Oxidation of Diclofenac under Solar Light. Catalysts 2022. [DOI: 10.3390/catal13010051] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
Abstract
Slow kinetics is one of the capital issues of photocatalytic technology because of its heterogeneous nature, which involves multi-step processes. Herein, we show that the simple modification of the sol-gel-based TiO2-smectite composite by hexadecyltrimethylammonium bromide (HDTMA) significantly boosts adsorption and photocatalytic efficient sol-gel-based light towards the removal of diclofenac from water. Three photocatalysts were prepared, including TiO2, TiO2-smectite, and HDTMA-TiO2-smectite. The materials were characterized to understand the surface interaction and crystal characteristics. In terms of photoactivity, it was found that the addition of HDTMA to TiO2-smectite improved the removal rate by twice. HDTMA changes the functional groups to TiO2-smectite composite allowing enhanced adsorption and photoactivity through the so-called Adsorb and Shuttle process. The recycling tests show that HDTMA-TiO2-smectite can be used up to four times with good performance. This modification approach could intensify the removal of pollutants from water instead of using complicated and costly techniques.
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Haruna A, Chong FK, Ho YC, Merican ZMA. Preparation and modification methods of defective titanium dioxide-based nanoparticles for photocatalytic wastewater treatment-a comprehensive review. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:70706-70745. [PMID: 36044146 DOI: 10.1007/s11356-022-22749-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/18/2022] [Accepted: 08/22/2022] [Indexed: 06/15/2023]
Abstract
The rapid population growth and industrial expansion worldwide have created serious water contamination concerns. To curb the pollution issue, it has become imperative to use a versatile material for the treatment. Titanium dioxide (TiO2) has been recognized as the most-studied nanoparticle in various fields of science and engineering due to its availability, low cost, efficiency, and other fascinating properties with a wide range of applications in modern technology. Recent studies revealed the photocatalytic activity of the material for the treatment of industrial effluents to promote environmental sustainability. With the wide band gap energy of 3.2 eV, TiO2 can be activated under UV light; thus, many strategies have been proposed to extend its photoabsorption to the visible light region. In what follows, this has generated increasing attention to study its characteristics and structural modifications in different forms for photocatalytic applications. The present review provides an insight into the understanding of the synthesis methods of TiO2, the current progress in the treatment techniques for the degradation of wide environmental pollutants employing modified TiO2 nanoparticles, and the factors affecting its photocatalytic activities. Further, recent developments in using titania for practical applications, the approach for designing novel nanomaterials, and the prospects and opportunities in this exciting area have been discussed.
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Affiliation(s)
- Abdurrashid Haruna
- Department of Fundamental and Applied Sciences, Universiti Teknologi PETRONAS, 32610 Seri Iskandar, Perak Darul Ridzuan, Malaysia.
- Department of Chemistry, Ahmadu Bello University, Zaria, Nigeria.
- Centre of Innovative Nanostructures & Nanodevices (COINN), Institute of Autonomous System, Universiti Teknologi PETRONAS, 32610, Bandar Seri Iskandar, Perak, Malaysia.
| | - Fai-Kait Chong
- Department of Fundamental and Applied Sciences, Universiti Teknologi PETRONAS, 32610 Seri Iskandar, Perak Darul Ridzuan, Malaysia
- Centre of Innovative Nanostructures & Nanodevices (COINN), Institute of Autonomous System, Universiti Teknologi PETRONAS, 32610, Bandar Seri Iskandar, Perak, Malaysia
| | - Yeek-Chia Ho
- Civil and Environmental Engineering Department, Universiti Teknologi PETRONAS, 32610 Seri Iskandar, Perak Darul Ridzuan, Malaysia
- Centre for Urban Resource Sustainability, Institute for Self-Sustainable Building, Universiti Teknologi PETRONAS, 32610 Seri Iskandar, Perak Darul Ridzuan, Malaysia
| | - Zulkifli Merican Aljunid Merican
- Department of Fundamental and Applied Sciences, Universiti Teknologi PETRONAS, 32610 Seri Iskandar, Perak Darul Ridzuan, Malaysia
- Institute of Contaminant Management for Oil & Gas, Universiti Teknologi PETRONAS, 32610 Seri Iskandar, Perak Darul Ridzuan, Malaysia
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Li H, Yao Y, Yang X, Zhou X, Lei R, He S. Degradation of phenol by photocatalysis using TiO 2/montmorillonite composites under UV light. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:68293-68305. [PMID: 35536468 DOI: 10.1007/s11356-022-20638-8] [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: 09/02/2021] [Accepted: 05/01/2022] [Indexed: 06/14/2023]
Abstract
Composites of titanium (IV) oxide combined with montmorillonite (MMT) with various TiO2/MMT were prepared for photocatalysis application. The prepared samples were characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM), Fourier transform infrared spectroscopy (FTIR), diffuse reflectance UV-visible spectroscopy, and X-ray photoelectron spectroscopy (XPS). The main influential factors such as the TiO2/MMT dose, calcined temperature, and pH value of the solution were studied. The main intermediates of phenol degradation were determined by high performance liquid chromatography (HPLC). The results showed that the average size of TiO2 nanoparticles was decreased from 22.51 to 10.66 nm through the immobilization on MMT. The components in the interlayer domain were replaced by titanium pillars, and the pillaring reaction proceeded in the interlayer domain, the basic skeleton of MMT was unchanged, and TiO2 was dispersed on the surface of the MMT. When the initial concentration of phenol is 10 mg/L, the phenol solution pH is 6, and the UV light irradiation time is 240 min; the phenol degradation rate of 30%TiO2/MMT composite is 89.8%, which is better than MMT (11.5%) and pure TiO2 (58.8%). It shows that TiO2 loaded on MMT improves its photocatalytic activity. The phenol reaction process detected by HPLC showed that it had undergone through hydroquinone and benzoquinone, and finally converted into maleic acid and carbon dioxide and small molecules. The possible photocatalysis mechanism is presented.
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Affiliation(s)
- Huijuan Li
- Key Laboratory of State Forestry and Grassland Administration On Highly-Efficient Utilization of Forestry Biomass Resources in Southwest China (Southwest Forestry University), Kunming, 650224, People's Republic of China
| | - Yeting Yao
- Key Laboratory of State Forestry and Grassland Administration On Highly-Efficient Utilization of Forestry Biomass Resources in Southwest China (Southwest Forestry University), Kunming, 650224, People's Republic of China
| | - Xiaoyan Yang
- Key Laboratory of State Forestry and Grassland Administration On Highly-Efficient Utilization of Forestry Biomass Resources in Southwest China (Southwest Forestry University), Kunming, 650224, People's Republic of China
- Research Center for Analysis and Measurement, Kunming University of Science and Technology, 650093, Kunming, People's Republic of China
| | - Xusheng Zhou
- Key Laboratory of State Forestry and Grassland Administration On Highly-Efficient Utilization of Forestry Biomass Resources in Southwest China (Southwest Forestry University), Kunming, 650224, People's Republic of China
| | - Ran Lei
- Key Laboratory of State Forestry and Grassland Administration On Highly-Efficient Utilization of Forestry Biomass Resources in Southwest China (Southwest Forestry University), Kunming, 650224, People's Republic of China
| | - Sufang He
- Research Center for Analysis and Measurement, Kunming University of Science and Technology, 650093, Kunming, People's Republic of China.
- State Key Laboratory of Energy and Environmental Photocatalysis, Fuzhou University, 350108, Fuzhou, People's Republic of China.
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Dascalu M, Stoica AC, Bele A, Macsim AM, Bargan A, Varganici CD, Stiubianu GT, Racles C, Shova S, Cazacu M. Octakis(Carboxyalkyl-Thioethyl)Silsesquioxanes and Derived Metal Complexes: Synthesis, Characterization and Catalytic Activity Assessments. J Inorg Organomet Polym Mater 2022. [DOI: 10.1007/s10904-022-02408-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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Recent Review of Titania-Clay-Based Composites Emerging as Advanced Adsorbents and Photocatalysts for Degradation of Dyes over the Last Decade. ADSORPT SCI TECHNOL 2022. [DOI: 10.1155/2022/3823008] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/07/2022] Open
Abstract
Textile industry being one of the most flourishing industries keeps growing and developing every year, and the consequences are not very pleasant. Even though its contribution towards economy of a country is indisputable, there are many pros and cons associated with it that should not be brushed aside, one of them being textile dye waste which is also growing at alarming rate. Many techniques have been designed to deal with this environmental crisis including adsorption and photodegradation of dye waste by various substances, both natural and synthetic. TiO2 and clay both have gained immense popularity in this area. Over the last decade, many successful attempts have been made to design TiO2-clay-based composites to combine and make the most of their individual capabilities to degrade textile dye waste. While clay is an effective adsorbent, inexpensive, innocuous, and a great ion exchanger, TiO2 provides supplementary active sites and free radicals and speeds up the degradation rate of dyes. This review summarizes various features of TiO2-clay-based composites including their surface characteristics, their role as dye adsorbents and photocatalysts, challenges in their implementation, and modifications to overcome these challenges made over the last decade.
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One-Pot Synthesis of TiO2/Hectorite Composite and Its Photocatalytic Degradation of Methylene Blue. Catalysts 2022. [DOI: 10.3390/catal12030297] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
TiO2/hectorite composite photocatalysts with different molar ratios of lithium, magnesium, and silicon were synthesized by a one-pot hydrothermal method. The samples were characterized by X-ray diffraction (XRD), Fourier transform infrared (FTIR) spectroscopy, scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS), N2 adsorption-desorption isotherms, and ultraviolet-visible diffuse reflectance spectra (UV-Vis DRS). When the molar ratio of lithium, magnesium, and silicon was 1.32:5.34:8 (TH-2), the composite showed the highest UV photocatalytic degradation of methylene blue (MB). The apparent rate constant of TH-2 was 0.04361 min−1, which was about 3.12 times that of EVONIK Degussa commercial TiO2 of AEROXIDE P25. The improvement of photocatalytic efficiency of the composite was mainly due to its high specific surface area, light trapping ability, and effective separation of electrons (e−) and holes (h+). At the same time, the F element of hectorite is beneficial to the formation of Ti3+ in TiO2, thus enhancing the photocatalytic activity. After five cycles, the removal rate of MB with TH-2 still reached 87.9%, indicating its excellent reusability.
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Fatimah I, Fadillah G, Yanti I, Doong RA. Clay-Supported Metal Oxide Nanoparticles in Catalytic Advanced Oxidation Processes: A Review. NANOMATERIALS (BASEL, SWITZERLAND) 2022; 12:825. [PMID: 35269318 PMCID: PMC8912419 DOI: 10.3390/nano12050825] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/18/2022] [Revised: 02/22/2022] [Accepted: 02/27/2022] [Indexed: 11/29/2022]
Abstract
Advanced oxidation processes (AOPs) utilizing heterogeneous catalysts have attracted great attention in the last decade. The use of solid catalysts, including metal and metal oxide nanoparticle support materials, exhibited better performance compared with the use of homogeneous catalysts, which is mainly related to their stability in hostile environments and recyclability and reusability. Various solid supports have been reported to enhance the performance of metal and metal oxide catalysts for AOPs; undoubtedly, the utilization of clay as a support is the priority under consideration and has received intensive interest. This review provides up-to-date progress on the synthesis, features, and future perspectives of clay-supported metal and metal oxide for AOPs. The methods and characteristics of metal and metal oxide incorporated into the clay structure are strongly influenced by various factors in the synthesis, including the kind of clay mineral. In addition, the benefits of nanomaterials from a green chemistry perspective are key aspects for their further considerations in various applications. Special emphasis is given to the basic schemes for clay modifications and role of clay supports for the enhanced mechanism of AOPs. The scaling-up issue is suggested for being studied to further applications at industrial scale.
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Affiliation(s)
- Is Fatimah
- Department of Chemistry, Faculty of Mathematics and Natural Sciences, Universitas Islam Indonesia, Kampus Terpadu UII, Jl. Kaliurang Km 14, Yogyakarta 55112, Indonesia; (G.F.); (I.Y.)
| | - Ganjar Fadillah
- Department of Chemistry, Faculty of Mathematics and Natural Sciences, Universitas Islam Indonesia, Kampus Terpadu UII, Jl. Kaliurang Km 14, Yogyakarta 55112, Indonesia; (G.F.); (I.Y.)
| | - Ika Yanti
- Department of Chemistry, Faculty of Mathematics and Natural Sciences, Universitas Islam Indonesia, Kampus Terpadu UII, Jl. Kaliurang Km 14, Yogyakarta 55112, Indonesia; (G.F.); (I.Y.)
| | - Ruey-an Doong
- Institute of Analytical and Environmental Sciences, National Tsing Hua University, Hsinchu 30013, Taiwan
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Wang Z, Wu Z, Zhi X, Tu T, Nie J, Du X, Luo Y. TiO 2/CTS/ATP adsorbent modification and its application in adsorption-ultrafiltration process for dye wastewater purification. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2021; 28:59963-59973. [PMID: 34152543 DOI: 10.1007/s11356-021-13933-3] [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: 01/21/2021] [Accepted: 04/09/2021] [Indexed: 06/13/2023]
Abstract
Industrial dyeing produces highly polluting wastewater and threatens the environment. Effective treatment of dyeing wastewater is a crucial step to prevent toxic chemicals from entering receiving waters. This study aimed to assess a modified attapulgite (ATP)-based adsorbent for dyeing wastewater purification by introducing chitosan (CTS) and titanium dioxide (TiO2) into the adsorbent material named TiO2/CTS/ATP. It was found that after modification, the adsorbent showed a lower hydrophilicity, as demonstrated by an increase in the water contact angle from 9.1° to 42°, which could reduce the water adsorption tendency and potentially facilitate contaminants adherence. The modification also led to a significantly increased specific surface area of 79.111 m2/g from 3.791 m2/g and exhibited more uniform and smaller particle size (reduced from 3.99 to 2.52 μm). When the TiO2/CTS/ATP adsorbent was applied to the adsorption of Congo red solution, the adsorption efficiency was observed to reach to 97.6% at the dosage of 0.5 g/L. Furthermore, the combination of adsorption and ultrafiltration was able to achieve 99% Congo red removal. Adsorption pretreatment prior to the ultrafiltration also enabled to reduce membrane fouling, increased the reversible membrane fouling, and resulted in a considerably lower transmembrane pressure as compared with the direct ultrafiltration filtration system.
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Affiliation(s)
- Zhihong Wang
- School of Civil and Transportation Engineering, Guangdong University of Technology, Guangzhou, 510006, People's Republic of China
| | - Zekun Wu
- School of Civil and Transportation Engineering, Guangdong University of Technology, Guangzhou, 510006, People's Republic of China
| | - Xujun Zhi
- School of Civil and Transportation Engineering, Guangdong University of Technology, Guangzhou, 510006, People's Republic of China
| | - Tianfu Tu
- School of Civil and Transportation Engineering, Guangdong University of Technology, Guangzhou, 510006, People's Republic of China
| | - Jinxu Nie
- School of Civil and Transportation Engineering, Guangdong University of Technology, Guangzhou, 510006, People's Republic of China
| | - Xing Du
- School of Civil and Transportation Engineering, Guangdong University of Technology, Guangzhou, 510006, People's Republic of China.
| | - Yunlong Luo
- Global Centre for Environmental Remediation (GCER), University of Newcastle, Callaghan, NSW, 2308, Australia.
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Influence of Operational Parameters on Photocatalytic Degradation of Linuron in Aqueous TiO2 Pillared Montmorillonite Suspension. BULLETIN OF CHEMICAL REACTION ENGINEERING & CATALYSIS 2021. [DOI: 10.9767/bcrec.16.3.11108.673-685] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
TiO2 pillared clay was prepared by intercalation of titan polyoxocation into interlamelar space of an Algerian montmorillonite and used for the photocatalytic degradation of the linuron herbicide as a target pollutant in aqueous solution. The TiO2 pillared montmorillonite (Mont-TiO2) was characterized by X-ray photoelectron spectroscopy (XPS), X-Ray diffraction (XRD), X-Ray fluorescence (XRF), scanning electronic microscopy (SEM), thermogravimetry and differential thermal analysis (TG-DTA), Fourier transformed infra-red (FT-IR), specific area and porosity determinations. This physicochemical characterization pointed to successful TiO2 pillaring of the clay. The prepared material has porous structure and exhibit a good thermal stability as indicated by its surface area after calcination by microwave. The effects of operating parameters such as catalyst loading, initial pH of the solution and the pollutant concentration on the photocatalytic efficiency and COD removal were evaluated. Under initial pH of the solution around seven, pollutant concentration of 10 mg/L and 2.5 g/L of catalyst at room temperature, the degradation efficiency and COD removal of linuron was best then the other operating conditions. It was observed that operational parameters play a major role in the photocatalytic degradation process. Copyright © 2021 by Authors, Published by BCREC Group. This is an open access article under the CC BY-SA License (https://creativecommons.org/licenses/by-sa/4.0).
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Abstract
The use of titania-based composite materials in the field of heterogeneous catalysis and photocatalysis has a long and rich history. Hybrid structures combining titania nanoparticles with clay minerals have been extensively investigated for nearly four decades. The attractiveness of clay minerals as components of functional materials stems primarily from their compositional versatility and the possibility of using silicate lamellae as prefabricated building blocks ready to be fitted into the desired nanoconstruction. This review focuses on the evolution over the years of synthetic strategies employed for the manufacturing of titania–clay mineral composites with particular attention to the role of the adopted preparative approach in shaping the physical and chemical characteristics of the materials and enabling, ultimately, tuning of their catalytic and/or photocatalytic performance.
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Rashed MN, El Taher M, Fadlalla SMM. Photocatalytic degradation of Rhodamine‐B dye using composite prepared from drinking water treatment sludge and nano TiO
2. ENVIRONMENTAL QUALITY MANAGEMENT 2021. [DOI: 10.1002/tqem.21772] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
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15
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Li C, Zhu N, Yang S, He X, Zheng S, Sun Z, Dionysiou DD. A review of clay based photocatalysts: Role of phyllosilicate mineral in interfacial assembly, microstructure control and performance regulation. CHEMOSPHERE 2021; 273:129723. [PMID: 33524745 DOI: 10.1016/j.chemosphere.2021.129723] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/22/2020] [Revised: 01/01/2021] [Accepted: 01/16/2021] [Indexed: 06/12/2023]
Abstract
Over the past decades, inspired by the outstanding properties of clay minerals such as abundance, low-cost, environmental benignity, high stability, and regularly arranged silica-alumina framework, researchers put much efforts on the interface assembly and surface modification of natural minerals with bare photocatalysts, i.e. TiO2, g-C3N4, ZnO, MoS2, etc. The clay-based hybrid photocatalysts have resulted in a rich database for their tailor-designed microstructures, characterizations, and environmental-related applications. Therefore, in this study, we took a brief introduction of three representative minerals, i.e. kaolinite, montmorillonite and rectorite, and discussed their basic merits in photocatalysis applications. After that, we summarized the recent advances in construction of stable visible-light driven photocatalysts based on these minerals. The structure-activity relationships between the properties of clay types, pore structure, distribution/dispersion and light absorption, carrier separation efficiency as well as redox performance were illustrated in detail. Such representative information would provide theoretical basis and scientific support for the application of clay based photocatalysts. Finally, we pointed out the major challenges and future directions at the end of this review. Undoubtedly, control and preparation of novel photocatalysts based on clays will continue to witness many breakthroughs in the arena of solar-driven technologies.
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Affiliation(s)
- Chunquan Li
- School of Chemical and Environmental Engineering, China University of Mining and Technology (Beijing), Beijing, 100083, PR China
| | - Ningyuan Zhu
- Zigui Ecological Station for Three Gorges Dam Project, State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Sciences, Chinese Academy of Sciences, 71 East Beijing Road, Nanjing, 210008, China
| | - Shanshan Yang
- School of Earth and Space Sciences, Peking University, Beijing, 100871, PR China
| | - Xuwen He
- School of Chemical and Environmental Engineering, China University of Mining and Technology (Beijing), Beijing, 100083, PR China
| | - Shuilin Zheng
- School of Chemical and Environmental Engineering, China University of Mining and Technology (Beijing), Beijing, 100083, PR China
| | - Zhiming Sun
- School of Chemical and Environmental Engineering, China University of Mining and Technology (Beijing), Beijing, 100083, PR China.
| | - Dionysios D Dionysiou
- Department of Chemical and Environmental Engineering (DCEE), University of Cincinnati, Cincinnati, OH, 45221-0012, USA
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16
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Fellah M, Hezil N, Guerfi K, Djellabi R, Montagne A, Iost A, Borodin K, Obrosov A. Mechanistic pathways of cationic and anionic surfactants sorption by kaolinite in water. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2021; 28:7307-7321. [PMID: 33029773 DOI: 10.1007/s11356-020-11083-6] [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: 05/12/2020] [Accepted: 09/30/2020] [Indexed: 06/11/2023]
Abstract
Surfactants are widely used in many chemical industries and as primary components of cleaning detergents due to their specific characteristics, which in turn results in high pollution of domestic and industrial wastewaters by such substances. In this study, the mechanistic pathways of the adsorption of cationic benzyl-dimethyl-dodecyl ammonium bromide (BDDAB) and anionic sodium dodecyl sulfate (SDS) surfactants on kaolinite clay in water were investigated. The results showed that the adsorption of anionic surfactant (SDS) on kaolinite is better compared with cationic surfactant (BDDAB), wherein the ♦maximum adsorption capacity was found 161.4 μmol g-1 and 234 μmol g-1 for BDDAB and SDS, respectively. Adsorption kinetics were the best suited to pseudo-second-order model for both BDDAB and SDS with an adsorption rate constant of 0.028 g μmol-1 min-1 and 0.023 g μmol-1 min-1, respectively. Meanwhile, the adsorption of BDDAB by kaolinite showed that the isotherm adsorption tended to follow the Langmuir-Freundlich and Freundlich isotherm models. However, the SDS adsorption isotherm obeyed only the Langmuir-Freundlich model.
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Affiliation(s)
- Mamoun Fellah
- Mechanical Engineering Department, ABBES Laghrour-University, P.O 1252, 40004, Khenchela, Algeria.
- Tribology and Materials Group, Laboratory of Foundry, Badji Mokhtar University, B. O, 12 CP, 23000, Annaba, Algeria.
| | - Naouel Hezil
- Matter Sciences Department, ABBES Laghrour - University, P.O 1252, 40004, Khenchela, Algeria
- Advanced Materials Engineering and Sciences Laboraory, P.O 1252, 40004, Khenchela, Algeria
| | - Kamel Guerfi
- Laboratory of Water Treatment and valorization of the Industrial, Badji Mokhtar University, B. O, 12 CP, 23000, Annaba, Algeria
| | - Ridha Djellabi
- Department of Environmental Engineering, College of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen, 518055, People's Republic of China
| | - Alex Montagne
- Laboratory of Mechanics Surfaces and Materials Processing, ARTS ET METIERS ParisTech, 8, Boulevard Louis XIV, 59046, Lille Cedex, France
| | - Alain Iost
- Laboratory of Mechanics Surfaces and Materials Processing, ARTS ET METIERS ParisTech, 8, Boulevard Louis XIV, 59046, Lille Cedex, France
| | - Kirill Borodin
- M. N. Mikheev Institute of Metal Physics, Ural Branch of the Russian Academy of Sciences, 18 S. Kovalevskoi Str., Ekaterinburg, Russian Federation, 620108
- Ural Federal University, 19 Mira Str., Yekaterinburg, Russian Federation, 620002
| | - Aleksei Obrosov
- Department of Physical Metallurgy and Materials Technology, Brandenburg Technical University, 03046, Cottbus, Germany
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17
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Khataei MM, Yamini Y, Asiabi H, Shamsayei M. Covalent organic framework and montomorillonite nanocomposite as advanced adsorbent: synthesis, characterization, and application in simultaneous adsorption of cationic and anionic dyes. JOURNAL OF ENVIRONMENTAL HEALTH SCIENCE & ENGINEERING 2020; 18:1555-1567. [PMID: 33312661 PMCID: PMC7721761 DOI: 10.1007/s40201-020-00572-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/19/2020] [Accepted: 10/15/2020] [Indexed: 06/12/2023]
Abstract
In this work, Schiff base network-1 (SNW-1), as a new generation of covalent organic frameworks (COFs), was synthesized and modified by fabrication of a composite with clay mineral montomorillonite (Mt). It was used for simultaneous removal of anionic and cationic dyes from aqueous solutions. The fabricated composite was characterized successfully with various techniques. Tartrazine (TT) and methylene blue (MB) were selected as model anionic and cationic dyes, respectively. The effects of the percentage of each component in the composite, initial pH, and initial dye concentration were evaluated on the adsorption capacity. Adsorption reaction models and adsorption diffusion models were used to study the kinetic process of adsorption. Adsorption of both dyes reached equilibrium after 40 min. The obtained results were fitted to Langmuir, Freundlich, Temkin, and Dubinin-Radushkevich (D-R) models to predict the isotherms of adsorption. Under optimum conditions for removal of each dye with the composite, the maximum adsorption capacity of 519.2 and 602.7 mg g-1 were obtained for TT and MB, respectively. The used SNW-1/Mt composite could be regenerated by salty methanol. The high adsorption capacity and excellent reusability make SNW-1/Mt composite attractive for the simultaneous removal of anionic and cationic dyes from aqueous solutions.
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Affiliation(s)
| | - Yadollah Yamini
- Department of Chemistry, Tarbiat Modares University, P.O. Box 14115-175, Tehran, Iran
| | - Hamid Asiabi
- Department of Chemistry, Tarbiat Modares University, P.O. Box 14115-175, Tehran, Iran
| | - Maryam Shamsayei
- Department of Chemistry, Tarbiat Modares University, P.O. Box 14115-175, Tehran, Iran
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18
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Guzmán-Carrillo HR, Manzano-Ramírez A, Garcia Lodeiro I, Fernández-Jiménez A. ZnO Nanoparticles for Photocatalytic Application in Alkali-Activated Materials. Molecules 2020; 25:molecules25235519. [PMID: 33255643 PMCID: PMC7728076 DOI: 10.3390/molecules25235519] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2020] [Revised: 11/22/2020] [Accepted: 11/23/2020] [Indexed: 11/16/2022] Open
Abstract
This paper reports an Alkali-Activated Materials (AAM) using two different precursors, metakaolin and a metallurgical slag with photocatalytic zinc oxide nanoparticles, as novel photocatalytic composites. The photodegradation performance of the composites using methylene blue (MB) dye as a wastewater model was investigated by ultraviolet radiations (UV-vis) spectroscopy. Adsorption in dark conditions and photodegradation under UV irradiation are the mechanisms for removing MB dye. The pseudo-first-order kinetic and pseudo-second-order kinetic models were employed, and the experimental data agreed with the pseudo-second-order model in both cases with UV and without UV irradiations. As new photocatalytic materials, these composites offer an alternative for environmental applications.
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Affiliation(s)
- Hector R. Guzmán-Carrillo
- CINVESTAV-I.P.N. Unidad Querétaro, Querétaro 76230, Mexico;
- Correspondence: (H.R.G.-C.); (A.F.-J.); Tel.: +52-442-211-99-18 (H.R.G.-C.); +34-91-302-04-40 (A.F.-J.)
| | | | - Ines Garcia Lodeiro
- Eduardo Torroja Institute of Construction Sciences (IETcc–C.S.I.C.), E28033 Madrid, Spain;
| | - Ana Fernández-Jiménez
- Eduardo Torroja Institute of Construction Sciences (IETcc–C.S.I.C.), E28033 Madrid, Spain;
- Correspondence: (H.R.G.-C.); (A.F.-J.); Tel.: +52-442-211-99-18 (H.R.G.-C.); +34-91-302-04-40 (A.F.-J.)
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Gopinath KP, Madhav NV, Krishnan A, Malolan R, Rangarajan G. Present applications of titanium dioxide for the photocatalytic removal of pollutants from water: A review. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2020; 270:110906. [PMID: 32721341 DOI: 10.1016/j.jenvman.2020.110906] [Citation(s) in RCA: 112] [Impact Index Per Article: 28.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/22/2020] [Revised: 04/26/2020] [Accepted: 06/01/2020] [Indexed: 05/20/2023]
Abstract
The evolution of modern technology and industrial processes has been accompanied by an increase in the utilization of chemicals to derive new products. Water bodies are frequently contaminated by the presence of conventional pollutants such as dyes and heavy metals, as well as microorganisms that are responsible for various diseases. A sharp rise has also been observed in the presence of new compounds heretofore excluded from the design and evaluation of wastewater treatment processes, categorized as "emerging pollutants". While some are harmless, certain emerging pollutants possess the ability to cause debilitating effects on a wide spectrum of living organisms. Photocatalytic degradation has emerged as an increasingly popular solution to the problem of water pollution due to its effectiveness and versatility. The primary objective of this study is to thoroughly scrutinize recent applications of titanium dioxide and its modified forms as photocatalytic materials in the removal and control of several classes of water pollutants as reported in literature. Different structural modifications are used to enhance the performance of the photocatalyst such as doping and formation of composites. The principles of these modifications have been scrutinized and evaluated in this review in order to present their advantages and drawbacks. The mechanisms involved in the removal of different pollutants through photocatalysis performed by TiO2 have been highlighted. The factors affecting the mechanism of photocatalysis and those affecting the performance of different TiO2-based photocatalysts have also been thoroughly discussed, thereby presenting a comprehensive view of all aspects involved in the application of TiO2 to remediate and control water pollution.
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Affiliation(s)
| | - Nagarajan Vikas Madhav
- Department of Chemical Engineering, SSN College of Engineering, Kalavakkam, Chennai, 603110, Tamil Nadu, India
| | - Abhishek Krishnan
- Department of Chemical Engineering, SSN College of Engineering, Kalavakkam, Chennai, 603110, Tamil Nadu, India
| | - Rajagopal Malolan
- Department of Chemical Engineering, SSN College of Engineering, Kalavakkam, Chennai, 603110, Tamil Nadu, India
| | - Goutham Rangarajan
- Department of Chemical Engineering & Applied Chemistry, University of Toronto, 200 College Street, Ontario, M5S 3E5, Canada
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Morjène L, Tasbihi M, Schwarze M, Schomäcker R, Aloulou F, Seffen M. A composite of clay, cement, and wood as natural support material for the immobilization of commercial titania (P25, P90, PC500, C-TiO 2) towards photocatalytic phenol degradation. WATER SCIENCE AND TECHNOLOGY : A JOURNAL OF THE INTERNATIONAL ASSOCIATION ON WATER POLLUTION RESEARCH 2020; 81:1882-1893. [PMID: 32666943 DOI: 10.2166/wst.2020.244] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Different types of commercial titania (P25, P90, PC500, and C-TiO2) were immobilized as single or mixed photocatalyst onto the surface of a natural support material made of cement, clay, and wood fibers. The successful immobilization was studied by different techniques showing a composite material with the mechanical properties of the support material and the photocatalytic behavior of the immobilized titania. The supported photocatalyst showed high mechanical stability and was applied to the photocatalytic degradation of phenol as a model pollutant under UV light irradiation. As the most active photocatalytic material, a mixture PC500 and P90 (comp-PC500/P90) was identified with an apparent pseudo first-order kinetic rate constant (kapp) of 0.010 min-1 at a degradation efficiency of 100%. The catalyst was used several times and showed minor loss in activity during four runs due to degradation intermediates adsorbed to the surface, shown by a color change from white to yellow.
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Affiliation(s)
- L Morjène
- Department of Chemistry, Technische Universität Berlin, Straße des 17. Juni 124, 10623 Berlin, Germany E-mail: ; Laboratory of Energy and Materials, High School of Sciences and Technology of Hammam Sousse, University of Sousse, Rue Lamine Abassi 4011, Hammam Sousse, Tunisia
| | - M Tasbihi
- Department of Chemistry, Technische Universität Berlin, Straße des 17. Juni 124, 10623 Berlin, Germany E-mail:
| | - M Schwarze
- Department of Chemistry, Technische Universität Berlin, Straße des 17. Juni 124, 10623 Berlin, Germany E-mail:
| | - R Schomäcker
- Department of Chemistry, Technische Universität Berlin, Straße des 17. Juni 124, 10623 Berlin, Germany E-mail:
| | - F Aloulou
- Laboratory of Energy and Materials, High School of Sciences and Technology of Hammam Sousse, University of Sousse, Rue Lamine Abassi 4011, Hammam Sousse, Tunisia
| | - M Seffen
- Laboratory of Energy and Materials, High School of Sciences and Technology of Hammam Sousse, University of Sousse, Rue Lamine Abassi 4011, Hammam Sousse, Tunisia
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Sabouri MR, Sohrabi MR, Moghaddam AZ. A Novel and Efficient Dyes Degradation Using Bentonite Supported Zero‐Valent Iron‐Based Nanocomposites. ChemistrySelect 2020. [DOI: 10.1002/slct.201904174] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Affiliation(s)
- Mohammad Reza Sabouri
- Department of ChemistryIslamic Azad University, North Tehran Branch P.O. Box 1913674711 Tehran Iran
| | - Mahmood Reza Sohrabi
- Department of ChemistryIslamic Azad University, North Tehran Branch P.O. Box 1913674711 Tehran Iran
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22
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TiO2/clay as a heterogeneous catalyst in photocatalytic/photochemical oxidation of anionic reactive blue 19. ARAB J CHEM 2019. [DOI: 10.1016/j.arabjc.2014.11.006] [Citation(s) in RCA: 46] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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23
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Zeng L, Sun H, Peng T, Lv X. Comparison of the Phase Transition and Degradation of Methylene Blue of TiO 2, TiO 2/Montmorillonite Mixture and TiO 2/Montmorillonite Composite. Front Chem 2019; 7:538. [PMID: 31448258 PMCID: PMC6691041 DOI: 10.3389/fchem.2019.00538] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2019] [Accepted: 07/15/2019] [Indexed: 11/13/2022] Open
Abstract
Nano-TiO2 (T), TiO2/montmorillonite mixture (Mix), and TiO2/montmorillonite composite (Com) were prepared by using TiOSO4•2H2O as the precursor of TiO2 and montmorillonite as the matrix. The phase transition process of TiO2 and the degradation of methylene blue (MB) in T, Mix, and Com were studied by x-ray diffraction (XRD), infrared spectrum (IR), scanning electron microscopy with energy spectrum (SEM-EDS), and other methods. The results show that, except for the fact that the heating temperature has a great influence on the phase transition and grain growth of TiO2, the introduction of montmorillonite has an obvious inhibition effect on the phase transition and grain growth of TiO2, and the inhibition effect of the Com is obviously stronger than Mix. In Com, Ti–O–Si chemical bond was formed between TiO2 and oxygen atoms with negative charge on the bottom of the structure layer of montmorillonite, which is the main reason for inhibition effect. However, in Mix, TiO2 only covers the surface of montmorillonite without breaking the degree of order of montmorillonite and forming no chemical bond with montmorillonite, so the inhibition effect is small. From degradation of MB, it was found that before the structure of montmorillonite was destroyed (400–600°C), the total degradation percentage in Mix (85.3–99.5%) was higher than T and Com. At high temperature (above 700°C), because of the inhibition effect, the total degradation percentage of MB in Com is much larger than T and Mix, even above 1,100°C, the total degradation percentage can still reach at 47%. Therefore, in industrial applications, Mix and Com can be selected to degradation MB, according to the actual application temperature range.
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Affiliation(s)
- Li Zeng
- Key Laboratory of Solid Waste Treatment and Resource Recycle, Southwest University of Science and Technology, Ministry of Education, Mianyang, China.,School of Architecture and Civil Engineering, Chengdu University, Chengdu, China
| | - Hongjuan Sun
- Key Laboratory of Solid Waste Treatment and Resource Recycle, Southwest University of Science and Technology, Ministry of Education, Mianyang, China
| | - Tongjiang Peng
- Key Laboratory of Solid Waste Treatment and Resource Recycle, Southwest University of Science and Technology, Ministry of Education, Mianyang, China
| | - Xia Lv
- Key Laboratory of Solid Waste Treatment and Resource Recycle, Southwest University of Science and Technology, Ministry of Education, Mianyang, China
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24
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Novel Removal of Diazinon Pesticide by Adsorption and Photocatalytic Degradation of Visible Light-Driven Fe-TiO2/Bent-Fe Photocatalyst. J CHEM-NY 2019. [DOI: 10.1155/2019/2678927] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
In the study, Fe was used as a dopant to enhance photocatalytic activity of TiO2. Then, the Fe-doped TiO2 was deposited on bentonite, which was pillared by Fe. The synthesized materials were characterized by SEM, XRD, UV-Vis, BET, and point of zero charge (pHPZC). Then, the synthesized materials were used for diazinon removal under both dark and visible light conditions to investigate adsorption and photocatalytic degradation abilities of the synthesized materials. The maximum diazinon adsorption capacity of the synthesized Fe-TiO2/Bent-Fe was 27.03 mg/g. The obtained results indicated that the Fe-TiO2/Bent-Fe exhibited high photocatalytic degradation activity for removal of diazinon even under visible light. The diazinon removal experiments were also conducted using different photocatalyst dosages, under different pH and light sources to figure the optimal conditions for removal processes. The obtained results indicated that optimal photocatalyst dosage and pH were 0.5 g/L and 4.5, respectively. Finally, the natural light generated from solar could be suitable used for diazinon removal by the synthesized Fe-TiO2/Bent-Fe.
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Kartiko Widi R, Suciani I, Savitri E, Reynaldi R, Budhyantoro A. Photocatalytic decolorization of Basic Blue 41 using TiO2-Fe3O4-bentonite coating applied to ceramic in continuous system. CHEM ENG COMMUN 2019. [DOI: 10.1080/00986445.2019.1578756] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Affiliation(s)
- Restu Kartiko Widi
- Department of Chemical Engineering, University of Surabaya (UBAYA), Surabaya, Indonesia
| | - Inez Suciani
- Department of Chemical Engineering, University of Surabaya (UBAYA), Surabaya, Indonesia
| | - Emma Savitri
- Department of Chemical Engineering, University of Surabaya (UBAYA), Surabaya, Indonesia
| | - Rafael Reynaldi
- Department of Chemical Engineering, University of Surabaya (UBAYA), Surabaya, Indonesia
| | - Arief Budhyantoro
- Department of Chemical Engineering, University of Surabaya (UBAYA), Surabaya, Indonesia
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Huo M, Guo H, Jiang Y, Ju H, Xue B, Li F. A facile method of preparing sandwich layered TiO2 in between montmorillonite sheets and its enhanced UV-light photocatalytic activity. J Photochem Photobiol A Chem 2018. [DOI: 10.1016/j.jphotochem.2018.02.012] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Natarajan S, Bajaj HC, Tayade RJ. Recent advances based on the synergetic effect of adsorption for removal of dyes from waste water using photocatalytic process. J Environ Sci (China) 2018; 65:201-222. [PMID: 29548392 DOI: 10.1016/j.jes.2017.03.011] [Citation(s) in RCA: 252] [Impact Index Per Article: 42.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2016] [Accepted: 03/08/2017] [Indexed: 05/21/2023]
Abstract
The problem of textile dye pollution has been addressed by various methods, mainly physical, chemical, biological, and acoustical. These methods mainly separate and/or remove the dye present in water. Recently, advanced oxidation processes (AOP) have been focused for removal of dye from waste water due to their advantages such as ecofriendly, economic and capable to degrade many dyes or organic pollutant present in water. Photocatalysis is one of the advance oxidation processes, mainly carried out under irradiation of light and suitable photocatalytic materials. The photocatalytic activity of the photocatalytic materials mainly depends on the band gap, surface area, and generation of electron-hole pair for degradation dyes present in water. It has been observed that the surface area plays a major role in photocatalytic degradation of dyes, by providing higher surface area, which leads to the higher adsorption of dye molecule on the surface of photocatalyst and enhances the photocatalytic activity. This present review discusses the synergic effect of adsorption of dyes on the photocatalytic efficiency of various nanostructured high surface area photocatalysts. In addition, it also provides the properties of the water polluting dyes, their mechanism and various photocatalytic materials; and their morphology used for the dye degradation under irradiation of light along with the future prospects of highly adsorptive photocatalytic material and their application in photocatalytic removal of dye from waste water.
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Affiliation(s)
- Subramanian Natarajan
- Inorganic Materials and Catalysis Division (IMCD), CSIR-Central Salt and Marine Chemicals Research Institute (CSIR-CSMCRI), Council of Scientific and Industrial Research (CSIR), G.B. Marg, Bhavnagar 364 002, Gujarat, India.
| | - Hari C Bajaj
- Inorganic Materials and Catalysis Division (IMCD), CSIR-Central Salt and Marine Chemicals Research Institute (CSIR-CSMCRI), Council of Scientific and Industrial Research (CSIR), G.B. Marg, Bhavnagar 364 002, Gujarat, India
| | - Rajesh J Tayade
- Inorganic Materials and Catalysis Division (IMCD), CSIR-Central Salt and Marine Chemicals Research Institute (CSIR-CSMCRI), Council of Scientific and Industrial Research (CSIR), G.B. Marg, Bhavnagar 364 002, Gujarat, India.
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Baloyi J, Ntho T, Moma J. Synthesis and application of pillared clay heterogeneous catalysts for wastewater treatment: a review. RSC Adv 2018; 8:5197-5211. [PMID: 35542412 PMCID: PMC9078197 DOI: 10.1039/c7ra12924f] [Citation(s) in RCA: 77] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2017] [Accepted: 01/23/2018] [Indexed: 11/21/2022] Open
Abstract
The use of pillared interlayered clays (PILCs) as heterogenous catalysts in wastewater treatment technologies, particularly advanced oxidation processes (AOPs), is gaining popularity for the treatment of refractory wastewater effluents. The recent literature involving these solid materials is reviewed, with more focus on studies that aim at reducing the synthesis costs and escalating the synthesis process to industrial scale. Their role as active solid materials in the AOPs such as photocatalysis, catalytic wet peroxide oxidation (CWPO), the Fenton process and catalytic wet air oxidation (CWAO) of refractory organic compounds in polluted aqueous streams is also reviewed. These processes are evaluated to evidence their main direction for future research, particularly with reference to possible industrial use of these technologies to treat refractory organic wastewater using pillared clay-based catalysts. The pillared clay catalysts demonstrate good application prospects for the removal of refractory wastewater effluents using AOP technology. The reviewed studies suggest that the photocatalytic process is useful in low concentrations of these compounds, while CWPO, the Fenton process and CWAO are recommended for higher concentrations. However, catalyst development to reduce the severity of oxidation reaction conditions, with focus on the low cost, catalyst stability, reusability and environmental friendliness are the key aspects to be addressed by future research work.
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Affiliation(s)
- Jeffrey Baloyi
- Molecular Science Institute, School of Chemistry, University of the Witwatersrand P/Bag 3, WITS 2050 Johannesburg South Africa
- Advanced Materials Division Mintek, Private Bag X3015, Randburg 2125 South Africa
| | - Thabang Ntho
- Advanced Materials Division Mintek, Private Bag X3015, Randburg 2125 South Africa
| | - John Moma
- Molecular Science Institute, School of Chemistry, University of the Witwatersrand P/Bag 3, WITS 2050 Johannesburg South Africa
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Adsorption and photocatalytic performance of bentonite-titanium dioxide composites for methylene blue and rhodamine B decoloration. Heliyon 2018; 3:e00488. [PMID: 29387819 PMCID: PMC5772363 DOI: 10.1016/j.heliyon.2017.e00488] [Citation(s) in RCA: 56] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2017] [Revised: 10/10/2017] [Accepted: 12/07/2017] [Indexed: 11/25/2022] Open
Abstract
Bentonite − TiO2 composites were prepared by impregnation of TiO2 and bentonite, followed by microwave irradiation processes. The composites were characterized using FTIR, SEM, XRD, and nitrogen sorption methods. Anatase phase of TiO2 in all composites are observed through XRD diffraction peaks and surface morphology of the composites. The adsorption and photocatalytic capabilities of the composites were tested in liquid phase adsorption of methylene blue and Rhodamine B. The adsorption and photocatalytic degradation experiments were conducted in the presence or absence of UV light irradiation. Langmuir and Freundlich models were employed to correlate the experimental adsorption data, and it was found that Langmuir gave better performance in correlating the experimental data. Modification of Langmuir equation to accommodate photocatalytic degradation process was conducted, and the model could represent the experimental results very well.
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30
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Butman MF, Ovchinnikov NL, Karasev NS, Kochkina NE, Agafonov AV, Vinogradov AV. Photocatalytic and adsorption properties of TiO 2-pillared montmorillonite obtained by hydrothermally activated intercalation of titanium polyhydroxo complexes. BEILSTEIN JOURNAL OF NANOTECHNOLOGY 2018. [PMID: 29515950 PMCID: PMC5815293 DOI: 10.3762/bjnano.9.36] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/08/2023]
Abstract
We report on a new approach for the synthesis of TiO2-pillared montmorillonite, where the pillars exhibit a high degree of crystallinity (nanocrystals) representing a mixture of anatase and rutile phases. The structures exhibit improved adsorption and photocatalytic activity as a result of hydrothermally activated intercalation of titanium polyhydroxo complexes (i.e., TiCl4 hydrolysis products) in a solution with a concentration close to the sol formation limit. The materials, produced at various annealing temperatures from the intercalated samples, were characterized by infrared spectroscopy, differential scanning calorimetry (DSC)/thermogravimetric analysis (TGA), X-ray diffraction, dynamic light scattering (DLS) measurements, and liquefied nitrogen adsorption/desorption. The photocatalytic activity of the TiO2-pillared materials was studied using the degradation of anionic (methyl orange, MO) and cationic (rhodamine B, RhB) dyes in water under UV irradiation. The combined effect of adsorption and photocatalysis resulted in removal of 100% MO and 97.5% RhB (with an initial concentration of 40 mg/L and a photocatalyst-sorbent concentration of 1 g/L) in about 100 minutes. The produced TiO2-pillared montmorillonite showed increased photocatalytic activity as compared to the commercially available photocatalyst Degussa P25.
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Affiliation(s)
- Mikhail F Butman
- Ivanovo State University of Chemistry and Technology, Sheremetevsky Av. 7, Ivanovo 153000, Russian Federation
| | - Nikolay L Ovchinnikov
- Ivanovo State University of Chemistry and Technology, Sheremetevsky Av. 7, Ivanovo 153000, Russian Federation
| | - Nikita S Karasev
- Ivanovo State University of Chemistry and Technology, Sheremetevsky Av. 7, Ivanovo 153000, Russian Federation
| | - Nataliya E Kochkina
- G.A. Krestov Institute of Solution Chemistry, Russian Academy of Sciences, Akademicheskaya St. 1, Ivanovo 153045, Russian Federation
| | - Alexander V Agafonov
- G.A. Krestov Institute of Solution Chemistry, Russian Academy of Sciences, Akademicheskaya St. 1, Ivanovo 153045, Russian Federation
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Composition and Structure Evolution of Bi2O3 Coatings as Efficient Photocatalysts. COATINGS 2017. [DOI: 10.3390/coatings8010014] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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32
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Kim S, Sarkar D, Kim Y, Park MH, Yoon M, Kim Y, Kim M. Synthesis of functionalized titanium-carboxylate molecular clusters and their catalytic activity. J IND ENG CHEM 2017. [DOI: 10.1016/j.jiec.2017.04.022] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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33
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Javadi F, Tayebee R, Bahramian B. TiO
2
/nanoclinoptilolite as an efficient nanocatalyst in the synthesis of substituted 2‐aminothiophenes. Appl Organomet Chem 2017. [DOI: 10.1002/aoc.3779] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Farzad Javadi
- Department of Chemistry, School of SciencesHakim Sabzevari University Sabzevar 96179‐76487 Iran
| | - Reza Tayebee
- Department of Chemistry, School of SciencesHakim Sabzevari University Sabzevar 96179‐76487 Iran
| | - Bahram Bahramian
- Faculty of ChemistryShahrood University of Technology Shahrood Iran
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34
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Boutra B, Trari M. Solar photodegradation of a textile azo dye using synthesized ZnO/Bentonite. WATER SCIENCE AND TECHNOLOGY : A JOURNAL OF THE INTERNATIONAL ASSOCIATION ON WATER POLLUTION RESEARCH 2017; 75:1211-1220. [PMID: 28272050 DOI: 10.2166/wst.2016.597] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
The present work is devoted to the synthesis of a new photocatalyst ZnO (7.5%)/Bentonite prepared by impregnation method and its successful application for the degradation of Solophenyl Red 3BL (SR 3BL) under solar light (∼660 W/m2). The X-ray diffraction (XRD) indicates mixed phases of the nanocomposite catalyst (ZnO/Bentonite), characterized by scanning electron microscopy, X-ray fluorescence and attenuated total reflection. The optical properties confirm the presence of the Wurtzite ZnO phase with an optical gap of 3.27 eV. The catalyst dose (0.25-1 gL-1), pH solution (2.5-11) and initial dye concentration (5-75 mg/L) are optimized. The optimal pH (∼6.7) is close to the natural environment. The photodegradation yield increases with decreasing the SR 3BL concentration. The equilibrium is reached within 160 min and the data are well fitted by the Langmuir-Hinshelwood model; the SR 3BL disappearance obeys to a first-order kinetic with an apparent rate constant of 10-2 mn-1. The best yield of SR 3BL photodegradation (92%) is achieved for a concentration of 5 mg/L and a catalyst dose of 0.75 gL-1 at free pH.
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Affiliation(s)
- B Boutra
- Laboratory of Storage and Valorization of Renewable Energies, USTHB, Algiers BP 32, Algeria E-mail: ; ; Unité de Développement des Equipements Solaires, UDES/Centre de Développement des Energies Renouvelables, CDER, Bou Ismail, W. Tipaza 42415, Algeria and Laboratory of Reaction Engineering, Faculty of Mechanical Engineering and Process Engineering USTHB, Algiers BP 32, Algeria
| | - M Trari
- Laboratory of Storage and Valorization of Renewable Energies, USTHB, Algiers BP 32, Algeria E-mail: ;
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35
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Villa S, Caratto V, Locardi F, Alberti S, Sturini M, Speltini A, Maraschi F, Canepa F, Ferretti M. Enhancement of TiO₂ NPs Activity by Fe₃O₄ Nano-Seeds for Removal of Organic Pollutants in Water. MATERIALS 2016; 9:ma9090771. [PMID: 28773892 PMCID: PMC5457040 DOI: 10.3390/ma9090771] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/28/2016] [Revised: 08/30/2016] [Accepted: 09/05/2016] [Indexed: 11/16/2022]
Abstract
The enhancement of the photocatalytic activity of TiO₂ nanoparticles (NPs), synthesized in the presence of a very small amount of magnetite (Fe₃O₄) nanoparticles, is here presented and discussed. From X-ray diffraction (XRD) and differential scanning calorimetry (DSC) analyses, the crystallinity of TiO₂ nanoparticles (NPs) seems to be affected by Fe₃O₄, acting as nano-seeds to improve the tetragonal TiO₂ anatase structure with respect to the amorphous one. Photocatalytic activity data, i.e., the degradation of methylene blue and the Ofloxacin fluoroquinolone emerging pollutant, give evidence that the increased crystalline structure of the NPs, even if correlated to a reduced surface to mass ratio (with respect to commercial TiO₂ NPs), enhances the performance of this type of catalyst. The achievement of a relatively well-defined crystal structure at low temperatures (Tmax = 150 °C), preventing the sintering of the TiO₂ NPs and, thus, preserving the high density of active sites, seems to be the keystone to understand the obtained results.
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Affiliation(s)
- Silvia Villa
- Department of Chemistry and Industrial Chemistry, University of Genoa, Genoa 16146, Italy.
| | - Valentina Caratto
- Department of Chemistry and Industrial Chemistry, University of Genoa, Genoa 16146, Italy.
| | - Federico Locardi
- Department of Chemistry and Industrial Chemistry, University of Genoa, Genoa 16146, Italy.
| | - Stefano Alberti
- Department of Chemistry and Industrial Chemistry, University of Genoa, Genoa 16146, Italy.
| | - Michela Sturini
- Department of Chemistry, University of Pavia, Pavia 27100, Italy.
| | - Andrea Speltini
- Department of Chemistry, University of Pavia, Pavia 27100, Italy.
| | | | - Fabio Canepa
- Department of Chemistry and Industrial Chemistry, University of Genoa, Genoa 16146, Italy.
| | - Maurizio Ferretti
- Department of Chemistry and Industrial Chemistry, University of Genoa, Genoa 16146, Italy.
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36
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Zeghioud H, Khellaf N, Djelal H, Amrane A, Bouhelassa M. Photocatalytic Reactors Dedicated to the Degradation of Hazardous Organic Pollutants: Kinetics, Mechanistic Aspects, and Design – A Review. CHEM ENG COMMUN 2016. [DOI: 10.1080/00986445.2016.1202243] [Citation(s) in RCA: 43] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Affiliation(s)
- Hichem Zeghioud
- Department of Process Engineering, Faculty of Engineering, Badji Mokhtar University, Annaba, Algeria
- Laboratory of Organic Synthesis-Modeling and Optimization of Chemical Processes, Badji Mokhtar University, Annaba, Algeria
| | - Nabila Khellaf
- Department of Process Engineering, Faculty of Engineering, Badji Mokhtar University, Annaba, Algeria
- Laboratory of Organic Synthesis-Modeling and Optimization of Chemical Processes, Badji Mokhtar University, Annaba, Algeria
| | - Hayet Djelal
- Ecole des Métiers de l'Environnement, Campus de Ker Lann, Bruz, France
- Université Européenne de Bretagne, 5 Boulevard Laennec, Rennes, France
| | - Abdeltif Amrane
- Université Européenne de Bretagne, 5 Boulevard Laennec, Rennes, France
- Université de Rennes 1, ENSCR, CNRS, UMR, Allée de Beaulieu, Rennes Cedex, France
| | - Mohammed Bouhelassa
- LIPE, Faculty of Pharmaceutical Process Engineering, Constantine 3 University, Algeria
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37
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Bel Hadjltaief H, Ben Zina M, Galvez ME, Da Costa P. Photocatalytic degradation of methyl green dye in aqueous solution over natural clay-supported ZnO–TiO 2 catalysts. J Photochem Photobiol A Chem 2016. [DOI: 10.1016/j.jphotochem.2015.09.008] [Citation(s) in RCA: 127] [Impact Index Per Article: 15.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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38
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Pham TD, Lee BK, Pham-Cong D. Advanced removal of toluene in aerosol by adsorption and photocatalytic degradation of silver-doped TiO2/PU under visible light irradiation. RSC Adv 2016. [DOI: 10.1039/c5ra23786f] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
We synthesized a novel Ag–TiO2/PU material for the effective removal of gaseous toluene by both adsorption and photocatalytic degradation.
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Affiliation(s)
- Thanh-Dong Pham
- Department of Civil and Environmental Engineering
- University of Ulsan
- Ulsan 680-749
- Republic of Korea
| | - Byeong-Kyu Lee
- Department of Civil and Environmental Engineering
- University of Ulsan
- Ulsan 680-749
- Republic of Korea
| | - De Pham-Cong
- Department of Nano Fusion Technology
- Pusan National University
- Busan 609-735
- Republic of Korea
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39
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Oliveira TÍS, Zea-Redondo L, Moates GK, Wellner N, Cross K, Waldron KW, Azeredo HMC. Pomegranate peel pectin films as affected by montmorillonite. Food Chem 2015; 198:107-12. [PMID: 26769511 DOI: 10.1016/j.foodchem.2015.09.109] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2015] [Revised: 08/25/2015] [Accepted: 09/29/2015] [Indexed: 01/04/2023]
Abstract
The industrial production of pomegranate juice has been favored by its alleged health benefits derived from its antioxidant properties. The processing of pomegranate juice involves squeezing juice from the fruit with the seeds and the peels together, leaving a pomace consisting of approximately 73 wt% peels. In this study, pectin was extracted from pomegranate peels, and used to produce films with different contents of montmorillonite (MMT) as a nanoreinforcement material. The nanoreinforcement improved the tensile strength and modulus of films when added at up to 6 wt%, while the further addition of MMT (to 8 wt%) reduced the reinforcement effect, probably because of dispersion problems. The elongation was decreased with increasing MMT concentrations. The water vapor permeability decreased with increasing MMT contents up to 8 wt% MMT, indicating that the increased tortuosity of the permeant path was effective on barrier properties of the film.
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Affiliation(s)
| | - Luna Zea-Redondo
- Institute of Food Research, Norwich Research Park, Colney, Norwich NR4 7UA, UK.
| | - Graham K Moates
- Institute of Food Research, Norwich Research Park, Colney, Norwich NR4 7UA, UK
| | - Nikolaus Wellner
- Institute of Food Research, Norwich Research Park, Colney, Norwich NR4 7UA, UK
| | - Kathryn Cross
- Institute of Food Research, Norwich Research Park, Colney, Norwich NR4 7UA, UK
| | - Keith W Waldron
- Institute of Food Research, Norwich Research Park, Colney, Norwich NR4 7UA, UK
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40
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Lu Z, Xiang X, Zou L, Xie J. Fluffy-ball-shaped carbon nanotube–TiO2 nanorod nanocomposites for photocatalytic degradation of methylene blue. RSC Adv 2015. [DOI: 10.1039/c5ra05641a] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Fluffy-ball-shaped multiwalled CNT–TiO2 nanorod composites were fabricated via a facile hydrothermal approach for the photocatalytic degradation of methylene blue.
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Affiliation(s)
- Zhisong Lu
- Chongqing Key Laboratory for Advanced Materials & Technologies of Clean Energies
- Southwest University
- Chongqing 400715
- P. R. China
- Institute for Clean Energy & Advanced Materials
| | - Xiutao Xiang
- Chongqing Key Laboratory for Advanced Materials & Technologies of Clean Energies
- Southwest University
- Chongqing 400715
- P. R. China
- Institute for Clean Energy & Advanced Materials
| | - Long Zou
- Chongqing Key Laboratory for Advanced Materials & Technologies of Clean Energies
- Southwest University
- Chongqing 400715
- P. R. China
- Institute for Clean Energy & Advanced Materials
| | - Jiale Xie
- Chongqing Key Laboratory for Advanced Materials & Technologies of Clean Energies
- Southwest University
- Chongqing 400715
- P. R. China
- Institute for Clean Energy & Advanced Materials
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