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Farhan A, Khalid A, Maqsood N, Iftekhar S, Sharif HMA, Qi F, Sillanpää M, Asif MB. Progress in layered double hydroxides (LDHs): Synthesis and application in adsorption, catalysis and photoreduction. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 912:169160. [PMID: 38086474 DOI: 10.1016/j.scitotenv.2023.169160] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/30/2023] [Revised: 11/23/2023] [Accepted: 12/05/2023] [Indexed: 12/17/2023]
Abstract
Layered double hydroxides (LDHs), also known as anionic clays, have attracted significant attention in energy and environmental applications due to their exceptional physicochemical properties. These materials possess a unique structure with surface hydroxyl groups, tunable properties, and high stability, making them highly desirable. In this review, the synthesis and functionalization of LDHs have been explored including co-precipitation and hydrothermal methods. Furthermore, extensive research on LDH application in toxic pollutant removal has shown that modifying or functionalizing LDHs using materials such as activated carbon, polymers, and inorganics is crucial for achieving efficient pollutant adsorption, improved cyclic performance, as well as effective catalytic oxidation of organics and photoreduction. This study offers a comprehensive overview of the progress made in the field of LDHs and LDH-based composites for water and wastewater treatment. It critically discusses and explains both direct and indirect synthesis and modification techniques, highlighting their advantages and disadvantages. Additionally, this review critically discusses and explains the potential of LDH-based composites as absorbents. Importantly, it focuses on the capability of LDH and LDH-based composites in heterogeneous catalysis, including the Fenton reaction, Fenton-like reactions, photocatalysis, and photoreduction, for the removal of organic dyes, organic micropollutants, and heavy metals. The mechanisms involved in pollutant removal, such as adsorption, electrostatic interaction, complexation, and degradation, are thoroughly explained. Finally, this study outlines future research directions in the field.
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Affiliation(s)
- Ahmad Farhan
- Department of Chemistry, University of Agriculture Faisalabad, Faisalabad, Pakistan
| | - Aman Khalid
- Department of Chemistry, University of Agriculture Faisalabad, Faisalabad, Pakistan
| | - Nimra Maqsood
- Department of Chemistry, University of Science and Technology, Hefei, China
| | - Sidra Iftekhar
- Department of Applied Physics, University of Eastern Finland, Kuopio, Finland
| | | | - Fei Qi
- Beijing Key Lab for Source Control Technology of Water Pollution, College of Environmental Science and Engineering, Beijing Forestry University, Beijing, China
| | - Mika Sillanpää
- Department of Chemical Engineering, School of Mining, Metallurgy and Chemical Engineering, University of Johannesburg, Doornfontein, South Africa; Sustainability Cluster, School of Advanced Engineering, UPES, Bidholi, Dehradun, Uttarakhand, India; Department of Civil Engineering, University Centre for Research & Development, Chandigarh University, Gharuan, Mohali, Punjab, India
| | - Muhammad Bilal Asif
- Advanced Membranes and Porous Materials Center (AMPMC), Physical Sciences and Engineering (PSE), King Abdullah University of Science and Technology (KAUST), Thuwal, Saudi Arabia.
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Sadeghi Rad T, Sevval Yazici E, Khataee A, Gengec E, Kobya M. Tuned CuCr layered double hydroxide/carbon-based nanocomposites inducing sonophotocatalytic degradation of dimethyl phthalate. ULTRASONICS SONOCHEMISTRY 2023; 95:106358. [PMID: 36913781 PMCID: PMC10024049 DOI: 10.1016/j.ultsonch.2023.106358] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/25/2023] [Revised: 03/01/2023] [Accepted: 03/03/2023] [Indexed: 06/18/2023]
Abstract
This study is the first to explore the possibility of utilizing CuCr LDH decorated on reduced graphene oxide (rGO) and graphene oxide (GO) as sonophotocatalysts for the degradation of dimethyl phthalate (DMP). CuCr LDH and its nanocomposites were successfully fabricated and characterized. Scanning electron microscopy (SEM) along with high-resolution transmission electron microscope (HRTEM) both evidenced the formation of randomly oriented nanosheet structures of CuCr LDH coupled with thin and folded sheets of GO and rGO. The impact of diverse processes on the degradation efficiency of DMP in the presence of the so-prepared catalysts was compared. Benefiting from the low bandgap and high specific surface area, the as-obtained CuCr LDH/rGO represented outstanding catalytic activity (100 %) toward 15 mg L-1 of DMP within 30 min when subjected to light and ultrasonic irradiations simultaneously. Radical quenching experiments and visual spectrophotometry using an O-phenylenediamine revealed the crucial role of hydroxyl radicals compared to holes and superoxide radicals. Overall, outcomes disclosed that CuCr LDH/rGO is a stable and proper sonophotocatalyst for environmental remediation.
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Affiliation(s)
- Tannaz Sadeghi Rad
- Department of Environmental Engineering, Faculty of Engineering, Gebze Technical University, 41400 Gebze, Turkey
| | - Emine Sevval Yazici
- Department of Environmental Engineering, Faculty of Engineering, Gebze Technical University, 41400 Gebze, Turkey
| | - Alireza Khataee
- Department of Environmental Engineering, Faculty of Engineering, Gebze Technical University, 41400 Gebze, Turkey; Research Laboratory of Advanced Water and Wastewater Treatment Processes, Department of Applied Chemistry, Faculty of Chemistry, University of Tabriz, 51666-16471 Tabriz, Iran.
| | - Erhan Gengec
- Department of Environmental Protection, University of Kocaeli, 41275 Izmit, Kocaeli, Turkey
| | - Mehmet Kobya
- Department of Environmental Engineering, Faculty of Engineering, Gebze Technical University, 41400 Gebze, Turkey; Department of Environmental Engineering, Kyrgyz-Turkish Manas University, 720038 Bishkek, Kyrgyzstan
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Insights into the Titania (TiO2) Photocatalysis on the Removal of Phthalic Acid Esters (PAEs) in Water. BULLETIN OF CHEMICAL REACTION ENGINEERING & CATALYSIS 2022. [DOI: 10.9767/bcrec.17.3.15385.608-626] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
In this era of globalization, plastic is regarded as one of the most versatile innovations, finding its uses ranging from packaging, automotive, agriculture, and construction to the medical and pharmaceutical industries. Unfortunately, the single-use nature of plastics leads to ecological and environmental problems. Among conventional disposal management of plastic waste are landfilling dumping, incineration, and recycling. However, not all plastic waste goes into disposal management and ends up accumulating in lakes, rivers, and seas. In the aquatic environment, the action of photochemical weathering plastics has resulted in the release of chemical additives such as phthalic acid esters (PAEs), an important plasticizer added to plastic products to improve their softness, flexibility, and durability. Nowadays, PAEs have been ubiquitously detected in our environment and numerous organisms are exposed to PAEs to some extent. As PAEs carry endocrine disruptive and carcinogenicity properties, an urgent search for the development of an efficient and effective method to remove PAEs from the environment is needed. As a viable option, titania (TiO2) photocatalysis is a promising tool to combat the PAEs contamination in our environment owing to its high photocatalytic activity, cost-effectiveness, and its ability to totally mineralize PAEs into carbon dioxide and water. Hence, this paper aims to highlight the concerning issue of the contamination of PAEs in our aquatic environments and the summary of the removal of PAEs by TiO2 photocatalysis. This review concerning the significance of knowledge on environmental PAEs would hopefully spark huge interest and future development to tackle this plastic-associated pollutant. Copyright © 2022 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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Hussaini M, Vohra M. LDH-TiO 2 Composite for Selenocyanate (SeCN -) Photocatalytic Degradation: Characterization, Treatment Efficiency, Reaction Intermediates and Modeling. NANOMATERIALS 2022; 12:nano12122035. [PMID: 35745375 PMCID: PMC9227849 DOI: 10.3390/nano12122035] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/20/2022] [Revised: 06/02/2022] [Accepted: 06/09/2022] [Indexed: 02/06/2023]
Abstract
Selenium as a nutrient has a narrow margin between safe and toxic limits. Hence, wastewater discharges from selenium-containing sources require appropriate treatment that considers health concerns and stringent selenium-related water treatment standards. This work examined the use of a photocatalysis-cum-adsorption system based on a layered double hydroxide coupled with TiO2 (LDH-TiO2) to remove aqueous phase selenocyanate (SeCN−), which is difficult to treat and requires specific treatment procedures. The synthesized LDH and LDH-TiO2 composite samples were characterized using the X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM), and thermogravimetry analysis (TGA) methods. The XRD results for the uncalcined LDH indicated a hydrotalcite mass with a rhombohedral structure, whereas increasing the calcination temperature indicated transition to an amorphous state. FESEM results for the LDH-TiO2 matrix indicated round titanium dioxide particles and LDH hexagonal layers. The TGA findings for uncalcined LDH showed a gradual decrease in weight up to 250 °C, followed by a short plateau and then a sharp decrease in LDH weight from 320 °C, with a net weight loss around 47%. Based on the characterization and initial selenocyanate adsorption results, the 250 °C calcined LDH-TiO2 matrix was used for the selenocyanate photocatalysis. A ~100% selenium removal was observed using LDH:TiO2 at a 1.5:1 w/w ratio with a 2 g/L dose, whereas up to 80% selenium removal was noted for LDH:TiO2 at a 0.5:1 w/w ratio. The respective difference in the efficiency of selenium treatment was attributed to enhanced LDH-based adsorption sites in the enhanced LDH:TiO2 w/w ratio. Furthermore, the selenite and selenate that occurred during SeCN− photocatalytic degradation (PCD) were also nearly completely removed via adsorption. An optimization exercise using response surface methodology (RSM) for total selenium removal showed R2 values of more than 0.95, with a prediction accuracy of more than 90%. In summary, the present findings show that the use of a photocatalysis-cum-adsorption system based on LDH-TiO2 is a promising technique to treat industrial wastewater discharges for selenocyanate and also remove the resulting intermediates.
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Affiliation(s)
- Minaam Hussaini
- Civil and Environmental Engineering Department, King Fahd University of Petroleum & Minerals (KFUPM), Dhahran 31261, Saudi Arabia;
| | - Muhammad Vohra
- Civil and Environmental Engineering Department, King Fahd University of Petroleum & Minerals (KFUPM), Dhahran 31261, Saudi Arabia;
- Interdisciplinary Research Center for Construction and Building Materials (IRC-CBM), King Fahd University of Petroleum & Minerals (KFUPM), Dhahran 31261, Saudi Arabia
- Correspondence: ; Tel.: +966-13-860-2854
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Zare EN, Iftekhar S, Park Y, Joseph J, Srivastava V, Khan MA, Makvandi P, Sillanpaa M, Varma RS. An overview on non-spherical semiconductors for heterogeneous photocatalytic degradation of organic water contaminants. CHEMOSPHERE 2021; 280:130907. [PMID: 34162104 DOI: 10.1016/j.chemosphere.2021.130907] [Citation(s) in RCA: 35] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/03/2021] [Revised: 05/01/2021] [Accepted: 05/12/2021] [Indexed: 06/13/2023]
Abstract
Because of their carcinogenicity and mutagenicity, the elimination of organic contaminants from surface and subsurface water is a subject of environmental significance. Conventional water decontamination approaches such as membrane separation, ultrafiltration, adsorption, reverse osmosis, coagulation, etc., have relatively higher operating costs and can generate highly toxic secondary contaminants. On the other hand, heterogeneous photocatalysis, an advanced oxidation process (AOP), is considered a clean and cost-effective process for organic pollutants degradation. Owing to their distinctive structure and physicochemical properties non-spherical semiconductors have gained considerable limelight in the photocatalytic degradation of organic contaminants. The current review briefly introduces a wide range of organic water contaminants. Recent advances in non-spherical semiconductor assembly and their photocatalytic degradation applications are highlighted. The underlying mechanism, fundamentals of photocatalytic reactions, and the factors affecting the degradation performance are also alluded including the current challenges and future research perspectives.
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Affiliation(s)
| | - Sidra Iftekhar
- Department of Applied Physics, University of Eastern Finland, Kuopio, 70210, Finland
| | - Yuri Park
- Department of Separation Science, Lappeenranta-Lahti University of Technology LUT, Sammonkatu 12, FI, 50130, Mikkeli, Finland
| | - Jessy Joseph
- Department of Separation Science, Lappeenranta-Lahti University of Technology LUT, Sammonkatu 12, FI, 50130, Mikkeli, Finland
| | - Varsha Srivastava
- Department of Separation Science, Lappeenranta-Lahti University of Technology LUT, Sammonkatu 12, FI, 50130, Mikkeli, Finland
| | - Moonis Ali Khan
- Chemistry Department, College of Science, King Saud University, Riyadh, 11451, Saudi Arabia
| | - Pooyan Makvandi
- Center for Materials Interfaces, Istituto Italiano di Tecnologia (IIT), Viale R. Piaggio 34, 56025, Pontedera, Pisa, Italy
| | - Mika Sillanpaa
- Environmental Engineering and Management Research Group, Ton Duc Thang University, Ho Chi Minh City, Viet Nam; Faculty of Environment and Labour Safety, Ton Duc Thang University, Ho Chi Minh City, Vietnam.
| | - Rajender S Varma
- Regional Centre of Advanced Technologies and Materials, Czech Advanced Technology and Research Institute, Palacký University in Olomouc, Šlechtitelů 27, 783 71, Olomouc, Czech Republic.
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Pang X, Skillen N, Gunaratne N, Rooney DW, Robertson PKJ. Removal of phthalates from aqueous solution by semiconductor photocatalysis: A review. JOURNAL OF HAZARDOUS MATERIALS 2021; 402:123461. [PMID: 32688192 DOI: 10.1016/j.jhazmat.2020.123461] [Citation(s) in RCA: 45] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/16/2020] [Revised: 07/08/2020] [Accepted: 07/09/2020] [Indexed: 06/11/2023]
Abstract
While phthalate esters are commonly used as plasticizers to improve the flexibility and workability of polymeric materials, their presence and detection in various environments has become a significant concern. Phthalate esters are known to have endocrine-disrupting effects, which affects reproductive health and physical development. As a result, there is now increased focus and urgency to develop effective and energy efficient technologies capable of removing these harmful compounds from the environment. This review explores the use of semiconductor photocatalysis as an efficient and promising solution towards achieving removal and degradation of phthalate esters. A comprehensive review of photocatalysts reported in the literature demonstrates the range of materials including commercial TiO2, solar activated catalysts and composite materials capable of enhancing adsorption and degradation. The degradation pathways and kinetics are also considered to provide the reader with an insight into the photocatalytic mechanism of removal. In addition, through the use of two key platforms (the technology readiness level scale and electrical energy per order), the crucial parameters associated with advancing photocatalysis for phthalate ester removal are discussed. These include enhanced surface interaction, catalyst platform development, improved light delivery systems and overall system energy requirements with a view towards pilot scale and industrial deployment.
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Affiliation(s)
- Xinzhu Pang
- School of Chemistry and Chemical Engineering, Queens University Belfast, David Keir Building, Stranmillis Road, Belfast, BT9 5AG, UK
| | - Nathan Skillen
- School of Chemistry and Chemical Engineering, Queens University Belfast, David Keir Building, Stranmillis Road, Belfast, BT9 5AG, UK.
| | - Nimal Gunaratne
- School of Chemistry and Chemical Engineering, Queens University Belfast, David Keir Building, Stranmillis Road, Belfast, BT9 5AG, UK
| | - David W Rooney
- School of Chemistry and Chemical Engineering, Queens University Belfast, David Keir Building, Stranmillis Road, Belfast, BT9 5AG, UK
| | - Peter K J Robertson
- School of Chemistry and Chemical Engineering, Queens University Belfast, David Keir Building, Stranmillis Road, Belfast, BT9 5AG, UK.
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Liang Y, Li J, He Y, Jiang Z, Shangguan W. Catalytic oxidation of dimethyl phthalate over titania-supported noble metal catalysts. JOURNAL OF HAZARDOUS MATERIALS 2021; 401:123274. [PMID: 32763674 DOI: 10.1016/j.jhazmat.2020.123274] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/16/2020] [Revised: 06/07/2020] [Accepted: 06/17/2020] [Indexed: 06/11/2023]
Abstract
Semi-volatile organic compounds (SVOCs) are organic compounds with the boiling point ranging between 240/260 ℃ and 380/400 ℃. Detailed knowledge regarding catalytic removal of SVOCs from indoor environment is very limited as it remains challenge to explore such reaction due to the viscosity nature of target contaminants. Here, we established a facile methodology to explore the heterogeneous catalytic oxidation reaction of dimethyl phthalate (DMP), a model SVOC, over the surface of supported catalyst. DMP was found to be gradually oxidized over the surface of titania supported catalysts including palladium (Pd), platinum and ruthenium with increasing temperature. The cleavage of side chain of DMP occurs at 75 ℃ over the surface of Pd/TiO2, which is significantly lower than that of the other two catalysts. Carbon dioxide was observed as the main product of the catalytic oxidation reaction. However, aromatic products and small molecule products were still observed as side-product in different temperature range. Density functional theory calculations further show that DMP can react with reactive oxygen species to form phthalic acid. While the cleavage of the DMP side chain occurs to form products such as methyl benzoate. This work thus provides basic knowledge about indoor SVOCs catalytic oxidation removal.
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Affiliation(s)
- Yuting Liang
- Research Center for Combustion and Environmental Technology, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Jiayi Li
- State Key Laboratory of Microbial Metabolism, Joint International Research Laboratory of Metabolic and Developmental Sciences, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Yaoyu He
- Research Center for Combustion and Environmental Technology, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Zhi Jiang
- Research Center for Combustion and Environmental Technology, Shanghai Jiao Tong University, Shanghai 200240, China.
| | - Wenfeng Shangguan
- Research Center for Combustion and Environmental Technology, Shanghai Jiao Tong University, Shanghai 200240, China
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Zhang H, Zhao C, Na H. Theoretical Design of Biodegradable Phthalic Acid Ester Derivatives in Marine and Freshwater Environments. ChemistryOpen 2020; 9:1033-1045. [PMID: 33101830 PMCID: PMC7570447 DOI: 10.1002/open.202000093] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2020] [Revised: 09/07/2020] [Indexed: 11/19/2022] Open
Abstract
The biodegradability of phtalic acid esters in marine and freshwater environments was characterized by their binding free energy with corresponding degrading enzymes. According to comprehensive biodegradation effects weights, the binding free energy values were converted into dimensionless efficacy coefficient using ratio normalization method. Then, considering comprehensive dual biodegradation effects value and the structural parameters of PAEs in both marine and freshwater environments, a 3D‐QSAR pharmacophore model was constructed, five PAE derivatives (DBP−COOH, DBP−CHO, DBP−OH, DINP−NH2, and DINP−NO2) were screened out based on their environmental friendliness, functionality and stability. The prediction of biodegradation effects on five PAE derivatives by biodegradation models in marine and freshwater environment increased by 15.90 %, 15.84 %, 27.21 %, 12.33 %, and 8.32 %, and 21.57 %, 15.21 %, 20.99 %, 15.10 %, and 9.74 %, respectively. By simulating the photodegradation path of the PAE derivative molecular, it was found that DBP−OH can generate .OH and provides free radicals for the photodegradation of microplastics in the environment.
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Affiliation(s)
- Haigang Zhang
- Alan G. MacDiarmid Institute, College of Chemistry, Jilin University, No. 2699 Qianjin Street, Changchun City, 130012, Jilin Province, PR China
| | - Chengji Zhao
- Alan G. MacDiarmid Institute, College of Chemistry, Jilin University, No. 2699 Qianjin Street, Changchun City, 130012, Jilin Province, PR China
| | - Hui Na
- Alan G. MacDiarmid Institute, College of Chemistry, Jilin University, No. 2699 Qianjin Street, Changchun City, 130012, Jilin Province, PR China
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Moreno JD, Poznyak T, Rodríguez JL, Chairez I, Dorantes-Rosales HJ. Experimental Validation of the Mathematical Model of the Dimethyl Phthalate Degradation by Ozone in the Solid Phase. Ind Eng Chem Res 2020. [DOI: 10.1021/acs.iecr.0c02484] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Jaime Dueñas Moreno
- Lab. Ing. Química Ambiental, SEPI-ESIQIE, Instituto Politécnico Nacional, Zacatenco, 07738 Ciudad de México, México
| | - Tatyana Poznyak
- Lab. Ing. Química Ambiental, SEPI-ESIQIE, Instituto Politécnico Nacional, Zacatenco, 07738 Ciudad de México, México
| | - Julia Liliana Rodríguez
- Lab. Ing. Química Ambiental, SEPI-ESIQIE, Instituto Politécnico Nacional, Zacatenco, 07738 Ciudad de México, México
| | - Isaac Chairez
- Departamento de Bioprocesos, UPIBI, Instituto Politécnico Nacional, Ticomán, 07340 Ciudad de México, México
- Instituto Tecnológico de Etdios Ssuperiores de Monterrey, Campus de Guadaljara, Escuela de Ciencia e Ingeniería, 45201 Guadalajara, Jalisco, México
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Mallakpour S, Hatami M, Hussain CM. Recent innovations in functionalized layered double hydroxides: Fabrication, characterization, and industrial applications. Adv Colloid Interface Sci 2020; 283:102216. [PMID: 32763493 DOI: 10.1016/j.cis.2020.102216] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2020] [Revised: 07/25/2020] [Accepted: 07/26/2020] [Indexed: 12/21/2022]
Abstract
Layered Double Hydroxides (LDHs) are a group of hydrotalcite-like nano-sized materials with cationic layers and exchangeable interlayer anions. The wide range of divalent and trivalent cationic metals and anionic compounds are employed in the synthesis of LDH materials, which have improved their importance among the researchers. Because of their high anion exchange property, memory effect, tunable behavior, bio-friendly, simple preparation, and their affordability, these nano-materials are essentially interested today. Modification of LDHs improves their behaviours to make them appropriate in industrial fields, including biological, adsorbent, mechanical, optical, thermal, electrical fields, etc. This review has critically discussed the structural features, main properties, and also clarified the most important methods of modification and intercalation of LDH nano-materials. Moreover, some novel reported researches related to the successful modification of LDH materials have been characterized and briefly the advantages, disadvantages, and applications are presented in the industrial fields.
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Synthesis and Photocatalytic Activity of Ni–Fe Layered Double Hydroxide Modified Sulphur Doped Graphitic Carbon Nitride (SGCN/Ni–Fe LDH) Photocatalyst for 2,4-Dinitrophenol Degradation. Top Catal 2020. [DOI: 10.1007/s11244-020-01359-z] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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Adsorption and photocatalytic reduction of aqueous Cr(VI) by Fe3O4-ZnAl-layered double hydroxide/TiO2 composites. J Colloid Interface Sci 2020; 562:493-501. [DOI: 10.1016/j.jcis.2019.11.088] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2019] [Revised: 11/18/2019] [Accepted: 11/19/2019] [Indexed: 02/06/2023]
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Photocatalytic degradation mechanisms of dimethyl phthalate esters by MWCNTs-anatase TiO2 nanocomposites using the UHPLC/Orbitrap/MS technique. ADV POWDER TECHNOL 2020. [DOI: 10.1016/j.apt.2019.11.010] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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Han S, Niu Q, Qin N, Gu X, Zhang YN, Zhao G. In situ growth of M-{001}TiO2/Ti photoelectrodes: synergetic dominant {001} facets and ratio-optimal surface junctions for the effective oxidation of environmental pollutants. Chem Commun (Camb) 2020; 56:1337-1340. [DOI: 10.1039/c9cc09296j] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Engineering synergetic dominated {001} facet and ratio-optimally surface junctions on TiO2 photoelectrode for effective oxidation of environment pollutants.
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Affiliation(s)
- Shengnan Han
- School of Chemical Science and Engineering
- Shanghai Key Lab of Chemical Assessment and Sustainability
- Key Laboratory of Yangtze River Water Environment
- Tongji University
- Shanghai 200092
| | - Qiongyan Niu
- School of Chemical Science and Engineering
- Shanghai Key Lab of Chemical Assessment and Sustainability
- Key Laboratory of Yangtze River Water Environment
- Tongji University
- Shanghai 200092
| | - Ning Qin
- Department of Mechanical Engineering
- City University of Hong Kong
- Kowloon
- People's Republic of China
- Department of Materials Science and Engineering
| | - Xiaotong Gu
- School of Chemical Science and Engineering
- Shanghai Key Lab of Chemical Assessment and Sustainability
- Key Laboratory of Yangtze River Water Environment
- Tongji University
- Shanghai 200092
| | - Ya-nan Zhang
- School of Chemical Science and Engineering
- Shanghai Key Lab of Chemical Assessment and Sustainability
- Key Laboratory of Yangtze River Water Environment
- Tongji University
- Shanghai 200092
| | - Guohua Zhao
- School of Chemical Science and Engineering
- Shanghai Key Lab of Chemical Assessment and Sustainability
- Key Laboratory of Yangtze River Water Environment
- Tongji University
- Shanghai 200092
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Wang C, Zeng T, Gu C, Zhu S, Zhang Q, Luo X. Photodegradation Pathways of Typical Phthalic Acid Esters Under UV, UV/TiO 2, and UV-Vis/Bi 2WO 6 Systems. Front Chem 2019; 7:852. [PMID: 31921775 PMCID: PMC6923729 DOI: 10.3389/fchem.2019.00852] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2019] [Accepted: 11/22/2019] [Indexed: 11/13/2022] Open
Abstract
Photolysis and photocatalysis of typical phthalic acid esters (dimethyl phthalate, DMP; diethyl phthalate, DEP; dibutyl phthalate, DBP) were carried out in UV, UV/TiO2, and UV-Vis/Bi2WO6 systems. All of the selected phthalic acid esters and their decomposition byproducts were subjected to qualitative and quantitative analysis through HPLC and GC-MS. The results of 300 min of photolysis and photodegradation reaction were that each system demonstrated different abilities to remove DMP, DEP, and DBP. The UV/TiO2 system showed the strongest degradation ability on selected PAEs, with removal efficiencies of up to 93.03, 92.64, and 92.50% for DMP, DEP, and DBP in 90 min, respectively. UV-Vis/Bi2WO6 had almost no ability to remove DMP and DEP. However, all of the systems had strong ability to degrade DBP. On the other hand, the different systems resulted in various byproducts and PAE degradation pathways. The UV system mainly attacked the carbon branch and produced o-hydroxybenzoates. No ring-opening byproducts were detected in the UV system. In the photocatalytic process, the hydroxyl radicals produced not only attacked the carbon branch but also the benzene ring. Therefore, hydroxylated compounds and ring-opening byproducts were detected by GC-MS in both the UV/TiO2 and UV-Vis/Bi2WO6 photocatalytic systems. However, there were fewer products due to direct hole oxidation in the UV-Vis/Bi2WO6 system compared with the UV/TiO2 system, which mainly reacted with the pollutants via hydroxyl radicals.
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Affiliation(s)
- Chunying Wang
- College of Resource and Environmental Engineering, Jiangxi University of Science and Technology, Ganzhou, China
| | - Ting Zeng
- College of Resource and Environmental Engineering, Jiangxi University of Science and Technology, Ganzhou, China
| | - Chuantao Gu
- College of Resource and Environmental Engineering, Jiangxi University of Science and Technology, Ganzhou, China
- School of Chemistry and Chemical Engineering, Xiamen University, Xiamen, China
| | - Sipin Zhu
- College of Resource and Environmental Engineering, Jiangxi University of Science and Technology, Ganzhou, China
| | - Qingqing Zhang
- College of Resource and Environmental Engineering, Jiangxi University of Science and Technology, Ganzhou, China
| | - Xianping Luo
- College of Resource and Environmental Engineering, Jiangxi University of Science and Technology, Ganzhou, China
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16
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An overview of semiconductors/layered double hydroxides composites: Properties, synthesis, photocatalytic and photoelectrochemical applications. J Mol Liq 2019. [DOI: 10.1016/j.molliq.2019.111114] [Citation(s) in RCA: 57] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
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17
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Qu W, He D, Guo Y, Tang Y, Song RJ. Characterization of modified Alternanthera philoxeroides by diethylenetriamine and its application in the adsorption of copper(II) ions in aqueous solution. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2019; 26:21189-21200. [PMID: 31119533 DOI: 10.1007/s11356-019-05472-9] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/22/2019] [Accepted: 05/14/2019] [Indexed: 06/09/2023]
Abstract
By a simple and convenient method of using epichlorohydrin as linkages, a novel Alternanthera philoxeroides (AP) derivative modified with diethylenetriamine (DAP) was synthesized, which can remove copper(II) ions (Cu(II)) in the water environment efficiently. The adsorption capacity of DAP for Cu(II) under various factors was measured using ultraviolet spectrophotometer. The adsorption capacity and removal ratio were 19.33 mg/g and 95.57% at pH 5.5 and 298 K. The kinetic and equilibrium study shows that pseudo-second-order kinetic (R2 = 0.9964) and Langmuir isotherm models (R2 > 0.982) could properly describe DAP adsorption behaviors, and thermodynamic parameters indicate a spontaneous endothermic process (ΔG = - 3.6636 kJ/mol). The combined results of SEM, XRD, FTIR, and XPS analyses reveal that the dominant contribution for enhancement in Cu(II) adsorption is made by the formation of an amino group. And the adsorption mechanism is mainly the complexation reaction. The adsorption efficiency of DAP remained above 72.06% after 6 cycles of adsorption-desorption, which indicated that DAP has good regenerability and stability. All the results suggest that DAP could serve as promising adsorbents for Cu(II) pollution minimization.
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Affiliation(s)
- Wei Qu
- College of Chemistry and Chemical Engineering, Hunan University, Changsha, 410082, China
| | - Deliang He
- College of Chemistry and Chemical Engineering, Hunan University, Changsha, 410082, China.
| | - Yanni Guo
- College of Chemistry and Chemical Engineering, Hunan University, Changsha, 410082, China
| | - Yining Tang
- College of Chemistry and Chemical Engineering, Hunan University, Changsha, 410082, China
| | - Ren-Jie Song
- Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle, Nanchang Hangkong University, Nanchang, 330063, China
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Huang Z, Dai X, Huang Z, Wang T, Cui L, Ye J, Wu P. Simultaneous and efficient photocatalytic reduction of Cr(VI) and oxidation of trace sulfamethoxazole under LED light by rGO@Cu 2O/BiVO 4p-n heterojunction composite. CHEMOSPHERE 2019; 221:824-833. [PMID: 30684780 DOI: 10.1016/j.chemosphere.2019.01.087] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/28/2018] [Revised: 12/29/2018] [Accepted: 01/13/2019] [Indexed: 06/09/2023]
Abstract
Antibiotics and heavy metals often coexist in polluted environment, and the harm of combined pollution is greater than that of single pollution. In this study, a series of graphene supported p-n heterojunction rGO@Cu2O/BiVO4 composites are synthesized with different Cu2O doping for simultaneous detoxification of Cr(VI) and antibiotics. The obtained photocatalysts (rGO@Cu2O/BiVO4) with proper loading amount of Cu2O shows the a high photocatalytic degradation activity for simultaneously efficient Cr(VI) reduction and sulfamethoxazole (SMZ) oxidation under LED light at neutral pH. The Cr(VI) was completely transformed to Cr(III) rather than simply Cr(VI) adsorbed on the surface of rGO@Cu2O/BiVO4. The photocatalytic activity of composites can be attributed to excellent electrical conductivity of rGO and the p-n heterojunction between Cu2O and BiVO4, which promotes the spatial separation of photogenerated charges at the heterojunction boundary and inhibits of the photogenerated h+ and e- recombination. It's confirmed that h+, O2- and OH are the main reactive species for the photocatalytic SMZ oxidation, and the most important reactive species is h+. Finally, the tentative degradation pathways of SMZ are proposed based on the liquid chromatography-triple quadrupole mass spectrometry analysis. This work provides an effective approach for the treatment of water that contains SMZ and Cr(VI) under LED light.
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Affiliation(s)
- Zhiyan Huang
- Key Laboratory of Agro-environments in Tropics (Ministry of Agriculture), College of Natural Resources and Environment, South China Agricultural University, Guangzhou, 510642, PR China; Guangdong Engineering and Technology Research Center for Environmental Nanomaterials, School of Environment and Energy, South China University of Technology, Guangzhou, 510006, PR China
| | - Xide Dai
- Key Laboratory of Agro-environments in Tropics (Ministry of Agriculture), College of Natural Resources and Environment, South China Agricultural University, Guangzhou, 510642, PR China; Zhongshan Puchuan Testing Technology Co., Ltd., Zhongshan, 528478, PR China
| | - Zhujian Huang
- Key Laboratory of Agro-environments in Tropics (Ministry of Agriculture), College of Natural Resources and Environment, South China Agricultural University, Guangzhou, 510642, PR China; Guangdong Engineering and Technology Research Center for Environmental Nanomaterials, School of Environment and Energy, South China University of Technology, Guangzhou, 510006, PR China.
| | - Tenglu Wang
- Key Laboratory of Agro-environments in Tropics (Ministry of Agriculture), College of Natural Resources and Environment, South China Agricultural University, Guangzhou, 510642, PR China
| | - Lihua Cui
- Key Laboratory of Agro-environments in Tropics (Ministry of Agriculture), College of Natural Resources and Environment, South China Agricultural University, Guangzhou, 510642, PR China
| | - Jiaer Ye
- Key Laboratory of Agro-environments in Tropics (Ministry of Agriculture), College of Natural Resources and Environment, South China Agricultural University, Guangzhou, 510642, PR China
| | - Pingxiao Wu
- Guangdong Engineering and Technology Research Center for Environmental Nanomaterials, School of Environment and Energy, South China University of Technology, Guangzhou, 510006, PR China
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Urban Watercourses in Peril: Implications of Phthalic Acid Esters on Aquatic Ecosystems Caused by Urban Sprawl. WATER 2019. [DOI: 10.3390/w11030519] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
Urban sprawl worldwide warrants the use of large quantities of industrial and household products containing phthalic acid esters (PAEs) resulting in adverse impacts on the quality of aquatic life in urban watercourses. The presence of six PAEs (dimethyl phthalate (DMP), diethyl phthalate (DEP), di(n-butyl) phthalate (DBP), benzyl butyl phthalate (BBP), bis(2-ethylhexyl) phthalate (DEHP), and di(n-octyl) phthalate (DnOP)) in 22 shallow urban watercourses in Colombo and suburbs of Sri Lanka was investigated. The average concentrations of DEP, DBP, BBP, and DEHP in all watercourses varied between 2.5–265.0, 1.0–32.0, 61–108, and 12–165 µg/L, respectively. DMP and DnOP were below the limits of quantification (DMP-0.5 µg/L, DnOP-1.0 µg/L) for all watercourses. DEHP was the most abundant PAE in many watercourses. The significant factors affecting the ubiquitous presence of PAEs in watercourses are the inherent properties of each PAE, presence of industrial and household products with great potential for the migration of PAEs in the sub-catchments, and quality of the receiving water. The contamination levels of PAEs in most of the watercourses are alarmingly high, as evidenced by higher concentrations of DEHP and DBP than those of Canadian permissible levels for the protection of aquatic life (16 and 19 µg/L). This study was the first effort in Sri Lanka to investigate the presence of PAEs in urban watercourses.
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Huang Z, Gong B, Huang CP, Pan SY, Wu P, Dang Z, Chiang PC. Performance evaluation of integrated adsorption-nanofiltration system for emerging compounds removal: Exemplified by caffeine, diclofenac and octylphenol. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2019; 231:121-128. [PMID: 30340131 DOI: 10.1016/j.jenvman.2018.09.092] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/27/2018] [Revised: 09/24/2018] [Accepted: 09/26/2018] [Indexed: 06/08/2023]
Abstract
Emerging pollutants introduced into surface water pose potential hazards to the safety of drinking water. In this study, the removal performance of three emerging compounds (exemplified by caffeine, diclofenac and octylphenol, with different physico-chemical properties) from synthetic water and source water by combining activated carbon (AC) adsorption and nanofiltration (NF) membrane processes was evaluated and analyzed. Results from synthetic water showed that the adsorption isotherms modeled well with the Langmuir equation. The removal performance of target compounds by AC-NF system was more remarkable than that of NF-AC combination. In the source water system, the integrated AC-NF process with coagulation pretreatment (the alum dosage of 60 mg/L) achieved satisfactory performance (the removal efficiencies of three target compounds reached > 95%). Results showed the electrostatic interaction and pollutant hydrophobicity determined the behavior and the fate of selected PPCPs/EDCs during the sequential treatment process of coagulation, activated carbon adsorption, and NF membrane separation. Finally, the AC and NF membranes were analyzed by Fourier transform infrared spectroscopy and scanning electron microscopy to understand the mechanisms, i.e. electrostatic and hydrophobic effects on the total removal process. It suggests that the integrated AC-NF process with coagulation pretreatment should be a feasible approach for removing emerging compounds in waterworks.
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Affiliation(s)
- Zhujian Huang
- College of Natural Resources and Environment, South China Agricultural University, Guangzhou 510642, China; Carbon Cycle Research Center, National Taiwan University, Taipei 10673, Taiwan; School of Environment and Energy, South China University of Technology, Guangzhou 510006, China
| | - Beini Gong
- College of Natural Resources and Environment, South China Agricultural University, Guangzhou 510642, China; School of Environment and Energy, South China University of Technology, Guangzhou 510006, China
| | - Chin-Pao Huang
- Department of Civil & Environmental Engineering, University of Delaware, Newark, DE 19716, United States
| | - Shu-Yuan Pan
- Energy Technologies Area, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, United States
| | - Pingxiao Wu
- School of Environment and Energy, South China University of Technology, Guangzhou 510006, China
| | - Zhi Dang
- School of Environment and Energy, South China University of Technology, Guangzhou 510006, China
| | - Pen-Chi Chiang
- Carbon Cycle Research Center, National Taiwan University, Taipei 10673, Taiwan.
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Wang L, Gao X, Cheng Y, Zhang X, Wang G, Zhang Q, Su J. TiO2@MgAl-layered double hydroxide with enhanced photocatalytic activity towards degradation of gaseous toluene. J Photochem Photobiol A Chem 2019. [DOI: 10.1016/j.jphotochem.2018.10.004] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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22
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Modified cellulose by polyethyleneimine and ethylenediamine with induced Cu(II) and Pb(II) adsorption potentialities. Carbohydr Polym 2018; 202:470-478. [DOI: 10.1016/j.carbpol.2018.08.136] [Citation(s) in RCA: 84] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2018] [Revised: 08/19/2018] [Accepted: 08/30/2018] [Indexed: 12/24/2022]
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23
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Aoudjit F, Cherifi O, Halliche D. Simultaneously efficient adsorption and photocatalytic degradation of sodium dodecyl sulfate surfactant by one-pot synthesized TiO2/layered double hydroxide materials. SEP SCI TECHNOL 2018. [DOI: 10.1080/01496395.2018.1527352] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Affiliation(s)
- Farid Aoudjit
- Laboratory of Petrochemical Synthesis, Faculty of Hydrocarbons and Chemistry, University of M’Hamed Bougara, Boumerdes, Algeria
| | - Ouiza Cherifi
- Laboratory of Petrochemical Synthesis, Faculty of Hydrocarbons and Chemistry, University of M’Hamed Bougara, Boumerdes, Algeria
- Laboratory of Natural Gas Chemistry, Faculty of Chemistry, University of Sciences and Technology, Houari Boumediene, Algiers, Algeria
| | - Djamilla Halliche
- Laboratory of Natural Gas Chemistry, Faculty of Chemistry, University of Sciences and Technology, Houari Boumediene, Algiers, Algeria
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24
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25
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Arcanjo GS, Mounteer AH, Bellato CR, Silva LMMD, Brant Dias SH, Silva PRD. Heterogeneous photocatalysis using TiO 2 modified with hydrotalcite and iron oxide under UV-visible irradiation for color and toxicity reduction in secondary textile mill effluent. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2018; 211:154-163. [PMID: 29408063 DOI: 10.1016/j.jenvman.2018.01.033] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/25/2017] [Revised: 01/05/2018] [Accepted: 01/09/2018] [Indexed: 06/07/2023]
Abstract
The objective of this study was to evaluate ADMI color removal from a biologically treated textile mill effluent by heterogeneous photocatalysis with UV-visible irradiation (UV-vis) using a novel catalyst composed of TiO2 supported on hydrotalcite and doped with iron oxide (HT/Fe/TiO2). Simulated biological treatment of solutions of the dyes (50 mg/L) used in the greatest amounts at the mill where the textile effluent was collected resulted in no color removal in reactive dye solutions and about 50% color removal in vat dye solutions, after 96 h, indicating that the secondary effluent still contained a large proportion of anionic reactive dyes. Photocatalytic treatments were carried out with TiO2 and HT/Fe/TiO2 of Fe:Ti molar ratios of 0.25, 0.5, 0.75 and 1, with varying catalyst doses (0-3 mg/L), initial pH values (4-10) and UV-vis times (0-6 h). The highest ADMI color removal with unmodified TiO2 was found at a dose of 2 g/L and pH 4, an impractical pH value for industrial application. The most efficient composite was HT/Fe/TiO2 1 at pH 10, also at a dose of 2 g/L, which provided more complete ADMI color removal, from 303 to 9 ADMI color units (96%), than unmodified TiO2, from 303 to 37 ADMI color units (88%), under the same conditions. Hydroxyl radicals were responsible for the color reduction, since when 2-propanol, an OH scavenger, was added color removal was very low. For this reason, the HT/Fe/TiO2 1 composite performed better at pH 10, because the higher concentration of hydroxide ions present at higher pH favored hydroxyl radical formation. COD reductions were relatively low and similar, approximately 20% for both catalysts after 6 h under UV-vis, because of the low initial COD (78 mg/L). Secondary effluent toxicity to Daphnia similis (EC50 = 70.7%) was reduced by photocatalysis with TiO2 (EC50 = 95.0%) and the HT/Fe/TiO2 1 composite (EC50 = 78.6%). HT/Fe/TiO2 1 was reused five times and still lowered secondary effluent ADMI color below local discharge limits. Benefits of the HT/Fe/TiO2 1 catalyst compared to TiO2 include its lower bandgap energy (2.34 eV vs 3.25 eV), higher ADMI color removal and its magnetic nature that facilitated its recovery and would reduce treatment costs.
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Affiliation(s)
- Gemima Santos Arcanjo
- Department of Civil Engineering, Universidade Federal de Viçosa, Av. P.H. Rolfs, s/n, 36570-900 Viçosa, MG, Brazil.
| | - Ann H Mounteer
- Department of Civil Engineering, Universidade Federal de Viçosa, Av. P.H. Rolfs, s/n, 36570-900 Viçosa, MG, Brazil
| | - Carlos Roberto Bellato
- Department of Chemistry, Universidade Federal de Viçosa, Av. P.H. Rolfs, s/n, 36570-900 Viçosa, MG, Brazil
| | | | - Santos Henrique Brant Dias
- Department of Agricultural Engineering, Universidade Federal de Viçosa, Av. P.H. Rolfs, s/n, 36570-900 Viçosa, MG, Brazil
| | - Priscila Romana da Silva
- Department of Civil Engineering, Universidade Federal de Viçosa, Av. P.H. Rolfs, s/n, 36570-900 Viçosa, MG, Brazil
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26
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Sarkar B, Daware AV, Gupta P, Krishnani KK, Baruah S, Bhattacharjee S. Nanoscale wide-band semiconductors for photocatalytic remediation of aquatic pollution. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2017; 24:25775-25797. [PMID: 28988306 DOI: 10.1007/s11356-017-0252-3] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/18/2017] [Accepted: 09/19/2017] [Indexed: 05/22/2023]
Abstract
Water pollution is a serious challenge to the public health. Among different forms of aquatic pollutants, chemical and biological agents create paramount threat to water quality when the safety standards are surpassed. There are many conventional remediatory strategies that are practiced such as resin-based exchanger and activated charcoal/carbon andreverse osmosis. Newer technologies using plants, microorganisms, genetic engineering, and enzyme-based approaches are also proposed for aquatic pollution management. However, the conventional technologies have shown impending inadequacies. On the other hand, new bio-based techniques have failed to exhibit reproducibility, wide specificity, and fidelity in field conditions. Hence, to solve these shortcomings, nanotechnology ushered a ray of hope by applying nanoscale zinc oxide (ZnO), titanium dioxide (TiO2), and tungsten oxide (WO3) particles for the remediation of water pollution. These nanophotocatalysts are active, cost-effective, quicker in action, and can be implemented at a larger scale. These nanoparticles are climate-independent, assist in complete mineralization of pollutants, and can act non-specifically against chemically and biologically based aquatic pollutants. Photocatalysis for environmental remediation depends on the availability of solar light. The mechanism of photocatalysis involves the formation of electron-hole pairs upon light irradiations at intensities higher than their band gap energies. In the present review, different methods of synthesis of nanoscale ZnO, TiO2, and WO3 as well as their structural characterizations have been discussed. Photodegradation of organic pollutants through mentioned nanoparticles has been reviewed with recent advancements. Enhancing the efficacy of photocatalysis through doping of TiO2 and ZnO nanoparticles with non-metals, metals, and metal ions has also been documented in this report.
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Affiliation(s)
- Biplab Sarkar
- ICAR-Indian Institute of Agricultural Biotechnology (IIAB), IINRG Campus, Namkum, Ranchi, Jharkhand, 834010, India.
| | - Akshay Vishnu Daware
- Department of Molecular Biology & Bioinformatics, Tripura University (A Central University), Suryamaninagar, Agartala, Tripura, 799022, India
| | - Priya Gupta
- Department of Molecular Biology & Bioinformatics, Tripura University (A Central University), Suryamaninagar, Agartala, Tripura, 799022, India
| | - Kishore Kumar Krishnani
- ICAR-National Institute of Abiotic Stress Management, Baramati, Pune, Maharashtra, 413115, India
| | - Sunandan Baruah
- Department of Electronics, Assam Don Bosco University, Azara, Guwahati, Assam, 781017, India
| | - Surajit Bhattacharjee
- Department of Molecular Biology & Bioinformatics, Tripura University (A Central University), Suryamaninagar, Agartala, Tripura, 799022, India.
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Xiao G, Zeng H, Xu S, Chen C, Zhao Q, Liu X. Preparation of Ti species coating hydrotalcite by chemical vapor deposition for photodegradation of azo dye. J Environ Sci (China) 2017; 60:14-23. [PMID: 29031441 DOI: 10.1016/j.jes.2017.03.031] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2016] [Revised: 01/17/2017] [Accepted: 03/08/2017] [Indexed: 06/07/2023]
Abstract
TiO2 in anatase crystal phase is a very effective catalyst in the photocatalytic oxidation of organic compounds in water. To improve its photocatalytic activity, the Ti-coating MgAl hydrotalcite (Ti-MgAl-LDH) was prepared by chemical vapor deposition (CVD) method. Response surface method (RSM) was employed to evaluate the effect of Ti species coating parameters on the photocatalytic activity, which was found to be affected by the furnace temperature, N2 flow rate and influx time of precursor gas. Application of RSM successfully increased the photocatalytic efficiency of the Ti-MgAl-LDH in methylene blue photodegradation under UV irradiation, leading to improved economy of the process. According to the results from X-ray diffraction, scanning electron microscopy, Brunner-Emmet-Teller and Barrett-Joyner-Hallender, thermogravimetric and differential thermal analysis, UV-vis diffuse reflectance spectra analyses, the Ti species (TiO2 or/and Ti4+) were successfully coated on the MgAl-LDH matrix. The Ti species on the surface of the Ti-MgAl-LDH lead to a higher photocatalytic performance than commercial TiO2-P25. The results suggested that CVD method provided a new approach for the industrial preparation of Ti-coating MgAl-LDH material with good photocatalytic performances.
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Affiliation(s)
- Gaofei Xiao
- College of Chemical Engineering, Xiangtan University, Xiangtan 411105, Hunan, China.
| | - HongYan Zeng
- College of Chemical Engineering, Xiangtan University, Xiangtan 411105, Hunan, China.
| | - Sheng Xu
- College of Chemical Engineering, Xiangtan University, Xiangtan 411105, Hunan, China
| | - ChaoRong Chen
- College of Chemical Engineering, Xiangtan University, Xiangtan 411105, Hunan, China
| | - Quan Zhao
- College of Chemical Engineering, Xiangtan University, Xiangtan 411105, Hunan, China
| | - XiaoJun Liu
- College of Chemical Engineering, Xiangtan University, Xiangtan 411105, Hunan, China
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28
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Bai Z, Yang Q, Wang J. Catalytic ozonation of dimethyl phthalate using Fe 3O 4/multi-wall carbon nanotubes. ENVIRONMENTAL TECHNOLOGY 2017; 38:2048-2057. [PMID: 27748641 DOI: 10.1080/09593330.2016.1245360] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/05/2016] [Accepted: 10/01/2016] [Indexed: 06/06/2023]
Abstract
In this paper, Fe3O4/multi-wall carbon nanotubes composites were prepared, characterized and used as a catalyst for enhancing the ozonation of dimethyl phthalate (DMP) in aqueous solution. The experimental results showed that DMP degradation and mineralization increased by 26% and 20%, respectively, in catalytic ozonation compared with single ozonation, and more H2O2 and organic acids were produced during catalytic ozonation process than single ozonation. The effect of pH, ozone concentration and catalyst dosage on DMP degradation was determined. The addition of tert-butanol and phosphates showed a negative effect on DMP degradation, suggesting that the acidic sites on the catalyst is favorable to ozone decomposition to produce hydroxyl radicals. The possible mechanism for catalytic ozonation of DMP was tentatively proposed. The adsorption of ozone and organics onto the surface of catalyst could improve the DMP degradation.
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Affiliation(s)
- Zhiyong Bai
- a School of Water Resources and Environment , China University of Geosciences , Beijing , People's Republic of China
- b Collaborative Innovation Center for Advanced Nuclear Energy Technology, INET , Tsinghua University , Beijing , People's Republic of China
| | - Qi Yang
- a School of Water Resources and Environment , China University of Geosciences , Beijing , People's Republic of China
| | - Jianlong Wang
- b Collaborative Innovation Center for Advanced Nuclear Energy Technology, INET , Tsinghua University , Beijing , People's Republic of China
- c Beijing Key Laboratory of Radioactive Waste Treatment, INET , Tsinghua University , Beijing , People's Republic of China
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29
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Mallakpour S, Hatami M. Condensation polymer/layered double hydroxide NCs: Preparation, characterization, and utilizations. Eur Polym J 2017. [DOI: 10.1016/j.eurpolymj.2017.03.015] [Citation(s) in RCA: 38] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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30
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Mallakpour S, Behranvand V. Application of recycled PET/carboxylated multi-walled carbon nanotube composites for Cd2+ adsorption from aqueous solution: a study of morphology, thermal stability, and electrical conductivity. Colloid Polym Sci 2017. [DOI: 10.1007/s00396-017-4022-z] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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31
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Barama S, Davidson A, Barama A, Boukhlouf H, Casale S, Calers C, Brouri D, Domingos C, Djadoun A. Dephosphatation under UV light of water by Ti-PILC with activation by secondary species (La, Se, and Rb). CR CHIM 2017. [DOI: 10.1016/j.crci.2016.05.017] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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32
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Wang G, Chen Q, Xin Y, Liu Y, Zang Z, Hu C, Zhang B. Construction of graphene-WO3/TiO2 nanotube array photoelectrodes and its enhanced performance for photocatalytic degradation of dimethyl phthalate. Electrochim Acta 2016. [DOI: 10.1016/j.electacta.2016.11.182] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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33
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Bai Z, Yang Q, Wang J. Catalytic ozonation of sulfamethazine antibiotics using Ce0.1Fe0.9OOH: Catalyst preparation and performance. CHEMOSPHERE 2016; 161:174-180. [PMID: 27424060 DOI: 10.1016/j.chemosphere.2016.07.012] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/31/2016] [Revised: 05/12/2016] [Accepted: 07/04/2016] [Indexed: 06/06/2023]
Abstract
Iron oxyhydroxides (FeOOH) are common crystalline forms of iron which play an important role in catalysis through a series of reduction-oxidation reactions. In this paper, Ce substituted goethite (Ce0.1Fe0.9OOH) was prepared by isomorphous substitution method, characterized by XRD, SEM, TEM-EDS, FTIR, and used for the catalytic ozonation of sulfamethazine (SMT). The results showed that the catalyst can significantly enhance the mineralization of SMT, and more than 42.1% SMT were mineralized in the presence of the catalyst, which is 1.74 times higher than ozonation alone. Moreover, with addition of catalyst, more ozone was dissolved into solution. The solution pH decreased due to small-molecule organic acids formation. The catalytic activity decreased slightly during the repeated batch experiments, due to the corrosion of the catalyst and the adsorption of the residual intermediates on the catalyst surface.
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Affiliation(s)
- Zhiyong Bai
- School of Water Resources and Environment, China University of Geosciences, Beijing 100083, PR China; Collaborative Innovation Center for Advanced Nuclear Energy Technology, INET, Tsinghua University, Beijing 100084, PR China
| | - Qi Yang
- School of Water Resources and Environment, China University of Geosciences, Beijing 100083, PR China
| | - Jianlong Wang
- Collaborative Innovation Center for Advanced Nuclear Energy Technology, INET, Tsinghua University, Beijing 100084, PR China; Beijing Key Laboratory of Radioactive Waste Treatment, INET, Tsinghua University, Beijing 100084, PR China.
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Pulido Melián E, Henríquez-Cárdenes E, González Díaz O, Doña Rodríguez J. Study of adsorption and degradation of dimethylphthalate on TiO2-based photocatalysts. Chem Phys 2016. [DOI: 10.1016/j.chemphys.2016.04.021] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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35
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Nguyen TKP, Beak MW, Huy BT, Lee YI. Adsorption and photodegradation kinetics of herbicide 2,4,5-trichlorophenoxyacetic acid with MgFeTi layered double hydroxides. CHEMOSPHERE 2016; 146:51-59. [PMID: 26706931 DOI: 10.1016/j.chemosphere.2015.12.008] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/01/2015] [Revised: 11/30/2015] [Accepted: 12/05/2015] [Indexed: 06/05/2023]
Abstract
The calcined layered double hydroxides (cLDHs) Ti-doped and undoped MgFe for this study were prepared by co-precipitation method followed by calcination at 500 °C. The as-prepared samples were characterized by scanning electron microscopy (SEM), X-ray diffraction (XRD), Brunauer Emmett Teller (BET) and UV-Vis diffuse reflectance spectrum (DRS) techniques and tested for adsorption and photodegradation (including photocatalytic and photo-Fenton-like) of 2,4,5-trichlorophenoxyacetic acid (2,4,5-T) in aqueous solutions under visible light irradiation. In the range of studied operating conditions, the as-prepared samples exhibited excellent photo-Fenton-like activity, leading to more than 80-95% degradation of 2,4,5-T at initial concentration of 100 mg L(-1) with 4 g calcined LDHs per liter, was accomplished in 360 min, while 2,4,5-T half-life time was as short as 99-182 min. The kinetics of adsorption and photodegradation of 2,4,5-T were also discussed. These results offered a green, low cost and high efficiency photocatalyst for environmental remediation.
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Affiliation(s)
- Thi Kim Phuong Nguyen
- Department of Chemistry, Changwon National University, Changwon 641-773, South Korea; Institute of Chemical Technology, Vietnam Academy of Science and Technology, 01 Mac Dinh Chi, District 1, Ho Chi Minh City, Vietnam
| | - Min-wook Beak
- Department of Chemistry, Changwon National University, Changwon 641-773, South Korea
| | - Bui The Huy
- Department of Chemistry, Changwon National University, Changwon 641-773, South Korea; NhaTrang Institute of Technology Research and Application, Vietnam Academy of Science and Technology, 2 Hungvuong, NhaTrang, Vietnam
| | - Yong-Ill Lee
- Department of Chemistry, Changwon National University, Changwon 641-773, South Korea.
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36
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Enhanced sunlight photocatalytic activity and recycled Ag–N co-doped TiO2 supported by expanded graphite C/C composites for degradation of organic pollutants. RESEARCH ON CHEMICAL INTERMEDIATES 2016. [DOI: 10.1007/s11164-015-2385-7] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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37
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Gaffour H, Mokhtari M. Photocatalytic degradation of 4-nitrophenol using TiO2 + Fe2O3 and TiO2/Fe2O3-supported bentonite as heterogeneous catalysts. RESEARCH ON CHEMICAL INTERMEDIATES 2016. [DOI: 10.1007/s11164-016-2436-8] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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38
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Cui H, Liang Z, Zhang J, Liu H, Shi J. Enhancement of the photocatalytic activity of a TiO2/carbon aerogel based on a hydrophilic secondary pore structure. RSC Adv 2016. [DOI: 10.1039/c6ra08074j] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The surface/interface synergy effect plays a positive role on the spatial separation and utilization of electrons and holes in photocatalytic process, which suggests a potential strategy for designing high efficiency photocatalysts.
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Affiliation(s)
- Hua'nan Cui
- Key Laboratory of Environment and Energy Chemistry of Guangdong Higher Education Institutes
- School of Chemistry and Chemical Engineering
- Sun Yat-sen University
- Guangzhou 510275
- China
| | - Zhenxing Liang
- Guangdong Provincial Key Laboratory of Fuel Cell Technology
- School of Chemistry and Chemical Engineering
- South China University of Technology
- Guangzhou 510641
- China
| | - JinZhong Zhang
- Department of Chemistry and Biochemistry
- University of California
- Santa Cruz
- USA
| | - Hong Liu
- Key Laboratory of Environment and Energy Chemistry of Guangdong Higher Education Institutes
- School of Chemistry and Chemical Engineering
- Sun Yat-sen University
- Guangzhou 510275
- China
| | - Jianying Shi
- Key Laboratory of Environment and Energy Chemistry of Guangdong Higher Education Institutes
- School of Chemistry and Chemical Engineering
- Sun Yat-sen University
- Guangzhou 510275
- China
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39
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Lee SH, Kim KW, Choi H, Takahashi Y. Simultaneous photooxidation and sorptive removal of As(III) by TiO2 supported layered double hydroxide. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2015; 161:228-236. [PMID: 26186550 DOI: 10.1016/j.jenvman.2015.06.049] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/23/2015] [Revised: 06/24/2015] [Accepted: 06/26/2015] [Indexed: 06/04/2023]
Abstract
The present study focused on the enhanced removal of As(III) by the simultaneous photooxidation and removal process using TiO2 nanoparticles supported layered double hydroxide (TiO2/LDH). The TiO2/LDH nanocomposites were synthesized using a flocculation method, and nanosized (30-50 nm) TiO2 particles were well-distributed on the LDH surface. The XPS and DLS data revealed that the TiO2/LDH nanocomposites were both chemically and physically stable in the aquatic system. The optimum ratio of TiO2 was 20 wt.% and the calcination process of LDH enhanced the removal capacity of As(III) by the reconstruction process. In the kinetic removal experiment, UV irradiation improved the removal rate of As(III), based on the continuous conversion of As(III) to As(V), and that the removal rate was faster under alkaline conditions than acidic and neutral conditions due to the abundance of oxidants and negative charged As(III) species (pKa: 9.2). The main mechanism of As(III) photooxidation is the direct oxidation by [Formula: see text] , which is generated by supported TiO2 nanoparticles. X-ray near edge structure results also confirmed that the As(III) was completely oxidized to As(V). Consequently, the simultaneous photooxidation and removal process of As(III) by TiO2/LDH nanocomposites may be the effective removal option in As(III) contaminated water.
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Affiliation(s)
- Sang-Ho Lee
- School of Environmental Science and Engineering, Gwangju Institute of Science and Technology, Gwangju, Republic of Korea
| | - Kyoung-Woong Kim
- School of Environmental Science and Engineering, Gwangju Institute of Science and Technology, Gwangju, Republic of Korea.
| | - Heechul Choi
- School of Environmental Science and Engineering, Gwangju Institute of Science and Technology, Gwangju, Republic of Korea
| | - Yoshio Takahashi
- Department of Earth and Planetary Science, Graduate School of Science, The University of Tokyo, Tokyo, Japan
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40
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Seftel E, Niarchos M, Mitropoulos C, Mertens M, Vansant E, Cool P. Photocatalytic removal of phenol and methylene-blue in aqueous media using TiO2@LDH clay nanocomposites. Catal Today 2015. [DOI: 10.1016/j.cattod.2014.10.030] [Citation(s) in RCA: 87] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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41
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Miranda LDL, Bellato CR, Milagres JL, Moura LG, Mounteer AH, de Almeida MF. Hydrotalcite-TiO2 magnetic iron oxide intercalated with the anionic surfactant dodecylsulfate in the photocatalytic degradation of methylene blue dye. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2015; 156:225-235. [PMID: 25846003 DOI: 10.1016/j.jenvman.2015.03.051] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/14/2014] [Revised: 03/15/2015] [Accepted: 03/29/2015] [Indexed: 06/04/2023]
Abstract
The new magnetic photocatalysts HT/TiO2/Fe and HT-DS/TiO2/Fe, modified with the anionic surfactant sodium dodecylsulfate (DS) were successfully synthesized in this work. Titanium dioxide (anatase) followed by iron oxide were deposited on the hydrotalcite support. Several catalyst samples were prepared with different amounts of titanium and iron. The photocatalysts were characterized by infrared and Raman spectroscopy, X-ray diffraction, scanning electron microscopy. Photocatalytic performance was analyzed by UV-visible radiation (filter cutoff, λ > 300 nm) of an aqueous solution (24 mg/L) of methylene blue (MB). The most efficient catalyst was obtained at an iron oxide:TiO2 molar ratio of 2:3. This catalyst showed high photocatalytic activity, removing 96% of the color and 61% of total organic carbon from the MB solution after 120 min. It was easily removed from solution after use because of its magnetic properties. The reuse of the HT-DS/TiO2/Fe23 catalyst was viable and the catalyst was structurally stable for at least four consecutive photocatalytic cycles.
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Affiliation(s)
- Liany D L Miranda
- Departamento de Química, Universidade Federal de Viçosa, Av. PH Holfs, s/n, 36571-000 Viçosa, Minas Gerais, Brazil
| | - Carlos R Bellato
- Departamento de Química, Universidade Federal de Viçosa, Av. PH Holfs, s/n, 36571-000 Viçosa, Minas Gerais, Brazil.
| | - Jaderson L Milagres
- Departamento de Química, Universidade Federal de Viçosa, Av. PH Holfs, s/n, 36571-000 Viçosa, Minas Gerais, Brazil
| | - Luciano G Moura
- Departamento de Física, Universidade Federal de Viçosa, Av. PH Holfs, s/n, 36571-000 Viçosa, Minas Gerais, Brazil
| | - Ann H Mounteer
- Departamento de Engenharia Civil, Universidade Federal de Viçosa, Av. PH Holfs, s/n, 36571-000 Viçosa, Minas Gerais, Brazil
| | - Marciano F de Almeida
- Departamento de Química, Universidade Federal de Viçosa, Av. PH Holfs, s/n, 36571-000 Viçosa, Minas Gerais, Brazil
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42
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Zhou Y, Hu W, Yu J, Jiao F. Effective photocatalytic degradation of methylene blue by Cu2O/MgAl layered double hydroxides. REACTION KINETICS MECHANISMS AND CATALYSIS 2015. [DOI: 10.1007/s11144-015-0856-x] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Xia S, Shao M, Zhou X, Pan G, Ni Z. Ti/ZnO–MxOy composites (M = Al, Cr, Fe, Ce): synthesis, characterization and application as highly efficient photocatalysts for hexachlorobenzene degradation. Phys Chem Chem Phys 2015; 17:26690-702. [DOI: 10.1039/c5cp04125b] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A series of novel organic–inorganic nanoscale layered materials were synthesized by intercalating the Ti-containing Schiff base complex into the interlayer of the ZnM layered double hydroxides (LDHs, M = Al, Cr, Fe, Ce).
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Affiliation(s)
- Shengjie Xia
- Department of Chemistry
- College of Chemical Engineering
- Zhejiang University of Technology
- Hangzhou 310032
- P. R. China
| | - Mengmeng Shao
- Department of Chemistry
- College of Chemical Engineering
- Zhejiang University of Technology
- Hangzhou 310032
- P. R. China
| | | | - Guoxiang Pan
- Department of Materials Chemistry
- School of Life Science
- Huzhou Teachers College
- Huzhou 313000
- P. R. China
| | - Zheming Ni
- Department of Chemistry
- College of Chemical Engineering
- Zhejiang University of Technology
- Hangzhou 310032
- P. R. China
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45
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Huang Y, Cui C, Zhang D, Li L, Pan D. Heterogeneous catalytic ozonation of dibutyl phthalate in aqueous solution in the presence of iron-loaded activated carbon. CHEMOSPHERE 2015; 119:295-301. [PMID: 25036944 DOI: 10.1016/j.chemosphere.2014.06.060] [Citation(s) in RCA: 79] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/18/2014] [Revised: 06/18/2014] [Accepted: 06/21/2014] [Indexed: 05/27/2023]
Abstract
Iron-loaded activated carbon was prepared and used as catalyst in heterogeneous catalytic ozonation of dibutyl phthalate (DBP). The catalytic activity of iron-loaded activated carbon was investigated under various conditions and the mechanisms of DBP removal were deduced. Characterization of catalyst indicated that the iron loaded on activated carbon was mainly in the form of goethite, which reduced its surface area, pore volume and pore diameter. The presence of metals on activated carbon positively contributed to its catalytic activity in ozonation of DBP. Iron loading content of 15% and initial water pH of 8 achieved highest DBP removal among all the tried conditions. Catalyst dosage of 10 mg L(-1) led to approximately 25% of increase in DBP (initial concentration 2 mg L(-1)) removal in 60 min as compared with ozone alone, and when catalyst dosage increased to 100 mg L(-1), the DBP removal was further improved by 46%. Based on a comparison of reaction rates for direct and indirect transformation of DBP, the increased removal of DBP in this study likely occurred via transformation of ozone into hydroxyl radicals on the catalyst surface.
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Affiliation(s)
- Yuanxing Huang
- School of Environment and Architecture, University of Shanghai for Science and Technology, Shanghai 200093, China
| | - Chenchen Cui
- School of Environment and Architecture, University of Shanghai for Science and Technology, Shanghai 200093, China
| | - Daofang Zhang
- School of Environment and Architecture, University of Shanghai for Science and Technology, Shanghai 200093, China
| | - Liang Li
- School of Environment and Architecture, University of Shanghai for Science and Technology, Shanghai 200093, China.
| | - Ding Pan
- School of Environment and Architecture, University of Shanghai for Science and Technology, Shanghai 200093, China
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46
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Zhao W, Zhang J, Zhang G, Xi L, Wu H, Hao Z. Controlled synthesis of Zn(1−1.5x)FexS nanoparticles via a microwave route and their photocatalytic properties. RSC Adv 2015. [DOI: 10.1039/c5ra20314g] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The crystallite size, band gap and structure for the Zn(1−1.5x)FexS samples have a strong influence on the degradation of DMP from wastewater.
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Affiliation(s)
- Weijie Zhao
- School of Biological and Chemical Engineering
- Taizhou Vocational & Technical College
- Taizhou 318000
- P. R. China
| | - Jing Zhang
- School of Biological and Chemical Engineering
- Taizhou Vocational & Technical College
- Taizhou 318000
- P. R. China
| | - Guangshan Zhang
- School of Municipal and Environmental Engineering
- Harbin Institute of Technology
- Harbin 150090
- P. R. China
| | - Limin Xi
- School of Biological and Chemical Engineering
- Taizhou Vocational & Technical College
- Taizhou 318000
- P. R. China
| | - Hangui Wu
- School of Biological and Chemical Engineering
- Taizhou Vocational & Technical College
- Taizhou 318000
- P. R. China
| | - Zhikui Hao
- School of Biological and Chemical Engineering
- Taizhou Vocational & Technical College
- Taizhou 318000
- P. R. China
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47
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Photocatalytic property and mechanism studies on acid red 14 by MxOy/ZnTi–layered double hydroxides (M=Fe, Sn, Ce). ACTA ACUST UNITED AC 2014. [DOI: 10.1016/j.molcata.2014.05.028] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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48
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Liu X, Xu H, Grabstanowicz LR, Gao S, Lou Z, Wang W, huang B, Dai Y, Xu T. Ti3+ self-doped TiO2−x anatase nanoparticles via oxidation of TiH2 in H2O2. Catal Today 2014. [DOI: 10.1016/j.cattod.2013.08.025] [Citation(s) in RCA: 87] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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49
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Liu J, Zhang G. Recent advances in synthesis and applications of clay-based photocatalysts: a review. Phys Chem Chem Phys 2014; 16:8178-92. [DOI: 10.1039/c3cp54146k] [Citation(s) in RCA: 144] [Impact Index Per Article: 14.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Clay-based photocatalysts with high adsorbability and special structures have attracted extensive attention because of their applications in environment and energy fields.
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Affiliation(s)
- Jin Liu
- School of Resources and Environmental Engineering
- Wuhan University of Technology
- Wuhan, P. R. China
| | - Gaoke Zhang
- School of Resources and Environmental Engineering
- Wuhan University of Technology
- Wuhan, P. R. China
- State Key Laboratory of Silicate Materials for Architectures
- Wuhan University of Technology
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50
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Huang Z, Wu P, Li H, Li W, Zhu Y, Zhu N. Synthesis and catalytic properties of La or Ce doped hydroxy-FeAl intercalated montmorillonite used as heterogeneous photo Fenton catalysts under sunlight irradiation. RSC Adv 2014. [DOI: 10.1039/c3ra46729e] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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