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Moja MM, Mapossa AB, Chirwa EMN, Tichapondwa S. Photocatalytic degradation of 2,4-dichlorophenol using nanomaterials silver halide catalysts. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2024; 31:11857-11872. [PMID: 38224437 PMCID: PMC10869396 DOI: 10.1007/s11356-024-31921-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/20/2023] [Accepted: 01/04/2024] [Indexed: 01/16/2024]
Abstract
In this study, the photocatalytic activity of nanomaterials Ag/AgX (X = Cl, Br, I) is reported. Highly efficient silver halide (Ag/AgX where X = Cl, Br, I) photocatalysts were synthesized through a hydrothermal method. The samples were characterized using a range of techniques such as X-ray diffraction (XRD), scanning electron microscopy (SEM), and Brunauer-Emmett-Teller (BET) to check their structural, morphology, textural and optical properties. In addition, the photocatalytic activity of photocatalysts was evaluated through the degradation of 2,4-dichlorophenol (2,4-DCP) under UV and visible light irradiation. XRD analysis confirmed the presence of a single-phase structure (pure phase) in the synthesized photocatalysts. SEM micrographs showed agglomeration with a non-uniform distribution of particles, which is a characteristic of surfactant-free precipitation reactions in aqueous media. The Ag/AgBr photocatalyst exhibited the best degradation efficiency, resulting in 83.37% and 89.39% photodegradation after 5 h of UV and visible light irradiation, respectively. The effect of catalyst loading, initial solution pH, and 2,4-DCP concentration was investigated for the best-performing Ag/AgBr photocatalyst. The degradation kinetics were best described by the pseudo-first-order Langmuir-Hinshelwood model. The photocatalytic capacity of Ag/AgBr decreased by 50% after five reuse cycles. SEM images revealed heightened levels of photodegradation on the catalyst surface. The study proved the feasibility of using simple synthesis methods to produce visible light active photocatalysts capable of degrading refractory phenolic pollutants in aqueous systems.
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Affiliation(s)
- Mahlako Mary Moja
- Department of Chemical Engineering, University of Pretoria, Pretoria, 0002, South Africa
| | - António Benjamim Mapossa
- Department of Chemical Engineering, University of Pretoria, Pretoria, 0002, South Africa.
- Department of Chemical and Petroleum Engineering, University of Calgary, 2500 University Drive NW, Calgary, AB, T2N 1N4, Canada.
| | | | - Shepherd Tichapondwa
- Department of Chemical Engineering, University of Pretoria, Pretoria, 0002, South Africa
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Santos LMM, Nascimento MM, Borges SDS, Bomfim E, Macedo VDJ, Silva LA. Green photocatalytic remediation of Fenthion using composites with natural red clay and non-toxic metal oxides with visible light irradiation. ENVIRONMENTAL TECHNOLOGY 2023; 44:118-129. [PMID: 34344269 DOI: 10.1080/09593330.2021.1964611] [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: 05/26/2021] [Accepted: 07/29/2021] [Indexed: 06/13/2023]
Abstract
In the present work, composites with non-toxic metal oxides, such as TiO2 and ZnO, and a natural red clay (taua) reach in hematite were used in the photocatalytic degradation of Fenthion. The composite TiO2/Taua (0.5:1 wt. ratio) and pure TiO2 were prepared by sol-gel method while ZnO/Taua (0.5:1 wt. ratio) and pure ZnO were prepared by Pechini method. The materials were characterized by XRD, SEM, EDX, and DRS. The anatase phase was formed in both pure TiO2 and TiO2/Taua, while the hexagonal phase was formed in pure ZnO and ZnO/Taua. The bandgap energies for the two composites were narrowed compared to the respective pure oxides as consequence of the hematite (α-Fe2O3, Eg = 2.1 eV) in the red clay, reaching 2.1 eV for TiO2/Taua and 2.0 eV for ZnO/Taua, while the bandgap energies for pure TiO2 and ZnO were 3.2 and 3.0 eV, respectively. Fenthion was not degraded in the dark, but the concentration droped 20% after 180 min under visible light irradiation without photocatalyst and 60% after 210 min in the presence of the pure red clay. Both TiO2/Taua and ZnO/Taua composites were also photocatalytic active to degrade Fenthion (λ > 420 nm), with degradation of 78% (in 180 min) and 85% (in 210 min) respectively. In the optimized conditions (pH 2, 100 mg L-1 of H2O2 and 30 mg L-1 of Fenthion), the ZnO/Taua composite was the most efficient, reaching 89% degradation in up to 30 min, with Fenthion sulfoxide as the degradation product.
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Affiliation(s)
| | - Madson M Nascimento
- Instituto de Química, Universidade Federal da Bahia, Salvador, Bahia, Brazil
- Instituto Nacional de Ciência e Tecnologia, INCT, de Energia e Ambiente, Universidade Federal da Bahia, Salvador, Bahia, Brazil
| | | | - Elton Bomfim
- Instituto de Química, Universidade Federal da Bahia, Salvador, Bahia, Brazil
| | | | - Luciana Almeida Silva
- Instituto de Química, Universidade Federal da Bahia, Salvador, Bahia, Brazil
- Instituto Nacional de Ciência e Tecnologia, INCT, de Energia e Ambiente, Universidade Federal da Bahia, Salvador, Bahia, Brazil
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Su Z, Li X, Xi Y, Xie T, Liu Y, Liu B, Liu H, Xu W, Zhang C. Microbe-mediated transformation of metal sulfides: Mechanisms and environmental significance. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 825:153767. [PMID: 35157862 DOI: 10.1016/j.scitotenv.2022.153767] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/29/2021] [Revised: 02/05/2022] [Accepted: 02/05/2022] [Indexed: 06/14/2023]
Abstract
Microorganisms play a key role in the natural circulation of various constituent elements of metal sulfides. Some microorganisms (such as Thiobacillus ferrooxidans) can promote the oxidation of metal sulfides to increase the release of heavy metals. However, other microorganisms (such as Desulfovibrio vulgaris) can transform heavy metals into metal sulfides crystals. Therefore, insight into the metal sulfides transformation mediated by microorganisms is of great significance to environmental protection. In this review, first, we discuss the mechanism and influencing factors of microorganisms transforming heavy metals into metal sulfides crystals in different environments. Then, we explore three microbe-mediated transformation forms of heavy metals to metal sulfides and their environmental applications: (1) transformation to metal sulfides precipitation for metal resource recovery; (2) transformation to metal sulfides nanoparticles (NPs) for pollutant treatment; (3) transformation to "metal sulfides-microbe" biohybrid system for clean energy production and pollutant remediation. Finally, we further provide critical views on the application of microbe-mediated metal sulfides transformation in the environmental field and discuss the need for future research.
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Affiliation(s)
- Zhu Su
- College of Environmental Science and Engineering, Hunan University, Changsha 410082, PR China; Key Laboratory of Environmental Biology and Pollution Control, Hunan University, Ministry of Education, Changsha 410082, PR China
| | - Xin Li
- College of Environmental Science and Engineering, Hunan University, Changsha 410082, PR China; Key Laboratory of Environmental Biology and Pollution Control, Hunan University, Ministry of Education, Changsha 410082, PR China.
| | - Yanni Xi
- College of Environmental Science and Engineering, Hunan University, Changsha 410082, PR China; Key Laboratory of Environmental Biology and Pollution Control, Hunan University, Ministry of Education, Changsha 410082, PR China
| | - Tanghuan Xie
- College of Environmental Science and Engineering, Hunan University, Changsha 410082, PR China; Key Laboratory of Environmental Biology and Pollution Control, Hunan University, Ministry of Education, Changsha 410082, PR China
| | - Yanfen Liu
- College of Environmental Science and Engineering, Hunan University, Changsha 410082, PR China; Key Laboratory of Environmental Biology and Pollution Control, Hunan University, Ministry of Education, Changsha 410082, PR China
| | - Bo Liu
- College of Environmental Science and Engineering, Hunan University, Changsha 410082, PR China; Key Laboratory of Environmental Biology and Pollution Control, Hunan University, Ministry of Education, Changsha 410082, PR China
| | - Huinian Liu
- College of Environmental Science and Engineering, Hunan University, Changsha 410082, PR China; Key Laboratory of Environmental Biology and Pollution Control, Hunan University, Ministry of Education, Changsha 410082, PR China
| | - Weihua Xu
- College of Environmental Science and Engineering, Hunan University, Changsha 410082, PR China; Key Laboratory of Environmental Biology and Pollution Control, Hunan University, Ministry of Education, Changsha 410082, PR China
| | - Chang Zhang
- College of Environmental Science and Engineering, Hunan University, Changsha 410082, PR China; Key Laboratory of Environmental Biology and Pollution Control, Hunan University, Ministry of Education, Changsha 410082, PR China
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Abstract
Nano-zeolite is an innovative class of materials that received recognition for its potential use in water and tertiary wastewater treatment. These applications include ion-exchange/sorption, photo-degradation, and membrane separation. The aim of this work is to summarize and analyze the current knowledge about the utilization of nano-zeolite in these applications, identify the gaps in this field, and highlight the challenges that face the wide scale applications of these materials. Within this context, an introduction to water quality, water and wastewater treatment, utilization of zeolite in contaminant removal from water was addressed and linked to its structure and the advances in zeolite preparation techniques were overviewed. To have insights into the trends of the scientific interest in this field, an in-depth analysis of the variation in annual research distribution over the last decade was performed for each application. This analysis covered the research that addressed the potential use of both zeolites and nano-zeolites. For each application, the characterization, experimental testing schemes, and theoretical analysis methodologies were overviewed. The results of the most advanced research were collected, summarized, and analyzed to allow an easy visualization and comparison of these research results. Finally, the gaps and challenges that face these applications are concluded.
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Luhar I, Luhar S, Abdullah MMAB, Razak RA, Vizureanu P, Sandu AV, Matasaru PD. A State-of-the-Art Review on Innovative Geopolymer Composites Designed for Water and Wastewater Treatment. MATERIALS (BASEL, SWITZERLAND) 2021; 14:7456. [PMID: 34885611 PMCID: PMC8658912 DOI: 10.3390/ma14237456] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 10/27/2021] [Revised: 11/17/2021] [Accepted: 11/29/2021] [Indexed: 11/16/2022]
Abstract
There is nothing more fundamental than clean potable water for living beings next to air. On the other hand, wastewater management is cropping up as a challenging task day-by-day due to lots of new additions of novel pollutants as well as the development of infrastructures and regulations that could not maintain its pace with the burgeoning escalation of populace and urbanizations. Therefore, momentous approaches must be sought-after to reclaim fresh water from wastewaters in order to address this great societal challenge. One of the routes is to clean wastewater through treatment processes using diverse adsorbents. However, most of them are unsustainable and quite costly e.g. activated carbon adsorbents, etc. Quite recently, innovative, sustainable, durable, affordable, user and eco-benevolent Geopolymer composites have been brought into play to serve the purpose as a pretty novel subject matter since they can be manufactured by a simple process of Geopolymerization at low temperature, lower energy with mitigated carbon footprints and marvellously, exhibit outstanding properties of physical and chemical stability, ion-exchange, dielectric characteristics, etc., with a porous structure and of course lucrative too because of the incorporation of wastes with them, which is in harmony with the goal to transit from linear to circular economy, i.e., "one's waste is the treasure for another". For these reasons, nowadays, this ground-breaking inorganic class of amorphous alumina-silicate materials are drawing the attention of the world researchers for designing them as adsorbents for water and wastewater treatment where the chemical nature and structure of the materials have a great impact on their adsorption competence. The aim of the current most recent state-of-the-art and scientometric review is to comprehend and assess thoroughly the advancements in geo-synthesis, properties and applications of geopolymer composites designed for the elimination of hazardous contaminants viz., heavy metal ions, dyes, etc. The adsorption mechanisms and effects of various environmental conditions on adsorption efficiency are also taken into account for review of the importance of Geopolymers as most recent adsorbents to get rid of the death-defying and toxic pollutants from wastewater with a view to obtaining reclaimed potable and sparkling water for reuse offering to trim down the massive crisis of scarcity of water promoting sustainable water and wastewater treatment for greener environments. The appraisal is made on the performance estimation of Geopolymers for water and wastewater treatment along with the three-dimensional printed components are characterized for mechanical, physical and chemical attributes, permeability and Ammonium (NH4+) ion removal competence of Geopolymer composites as alternative adsorbents for sequestration of an assortment of contaminants during wastewater treatment.
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Affiliation(s)
- Ismail Luhar
- Department of Civil Engineering, Shri Jagdishprasad Jhabarmal Tibrewala University, Rajasthan 333001, India;
| | - Salmabanu Luhar
- Center of Excellence Geopolymer and Green Technology (CEGeoGTech), Universiti Malaysia Perlis (UniMAP), Perlis 01000, Malaysia;
- Frederick Research Center, P.O. Box 24729, Nicosia 1303, Cyprus
- Department of Civil Engineering, Frederick University, Nicosia 1036, Cyprus
| | - Mohd Mustafa Al Bakri Abdullah
- Center of Excellence Geopolymer and Green Technology (CEGeoGTech), Universiti Malaysia Perlis (UniMAP), Perlis 01000, Malaysia;
| | - Rafiza Abdul Razak
- Center of Excellence Geopolymer and Green Technology (CEGeoGTech), Universiti Malaysia Perlis (UniMAP), Perlis 01000, Malaysia;
| | - Petrica Vizureanu
- Faculty of Materials Science and Engineering, Gheorghe Asachi Technical University of Iasi, D. Mangeron 41, 700050 Iasi, Romania
| | - Andrei Victor Sandu
- Faculty of Materials Science and Engineering, Gheorghe Asachi Technical University of Iasi, D. Mangeron 41, 700050 Iasi, Romania
- Romanian Inventors Forum, St. P. Movila 3, 700089 Iasi, Romania
- National Institute for Research and Development in Environmental Protection INCDPM, Splaiul Independentei 294, 060031 Bucuresti, Romania
| | - Petre-Daniel Matasaru
- Faculty of Electronics, Telecommunications and Information Technology, Technical University “Gheorghe Asachi”, Carol I Bvd, nr. 11 A, 700506 Iasi, Romania;
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Sheikhsamany R, Faghihian H, Fazaeli R. One-pot synthesis of BaTi0.85Zr0.15O3/MOF-199 (HKUST-1) as a highly efficient photocatalytic nanocomposite for tetracycline degradation under UV irradiation. INORG CHEM COMMUN 2021. [DOI: 10.1016/j.inoche.2021.109048] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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Pourshirband N, Nezamzadeh-Ejhieh A. An efficient Z-scheme CdS/g-C3N4 nano catalyst in methyl orange photodegradation: Focus on the scavenging agent and mechanism. J Mol Liq 2021. [DOI: 10.1016/j.molliq.2021.116543] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Zong MY, Fan CZ, Yang XF, Wang DH. Promoting Ni-MOF with metallic Ni for highly-efficient p-nitrophenol hydrogenation. MOLECULAR CATALYSIS 2021. [DOI: 10.1016/j.mcat.2021.111609] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
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Iazdani F, Nezamzadeh-Ejhieh A. Supported cuprous oxide-clinoptilolite nanoparticles: Brief identification and the catalytic kinetics in the photodegradation of dichloroaniline. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2021; 250:119348. [PMID: 33401177 DOI: 10.1016/j.saa.2020.119348] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/15/2020] [Revised: 12/06/2020] [Accepted: 12/14/2020] [Indexed: 06/12/2023]
Abstract
The supported CuO onto the ball-mill prepared clinoptilolite nanoparticles (CNPs) was prepared via an ion exchange process in Cu(II) aqueous solution followed by the calcination process. The CuO-CNP samples with various CuO loading were briefly characterized by XRD, FTIR, and DRS. pHpzc was varied in the range of 6.3 to 6.8 depending on the amount of loaded CuO in the samples. The band gap energy was estimated by applying the Kubelka-Munk equation on the DRS results that varied from 2.41 to 2.50 eV depending on the CuO loading. Based on the Scherrer equation nano-sized CuO-CNP at about 50 nm was estimated. The CuO-CNP contained 3.9% CuO showed the highest photocatalytic activity toward dichloroaniline (DCA). The effects of the experimental variables on DCA photodegradation were studied by using the Hinshelwood model. The optimal conditions for obtaining a higher rate for DCA photodegradation were the catalyst dose of 0.5 g/L, CDCA: 5 ppm, and the initial pH: 3. HPLC analysis of the photodegraded DCA solutions for 180 and 300 min gave the degradation extents 71% and 90%, respectively.
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Affiliation(s)
- Fereshteh Iazdani
- Department of Chemistry, Shahreza Branch, Islamic Azad University, P.O. Box 311-86145, Shahreza, Isfahan, Iran; Young Researchers and Elite Club, Shahreza Branch, Islamic Azad University, Shahreza, Iran
| | - Alireza Nezamzadeh-Ejhieh
- Department of Chemistry, Shahreza Branch, Islamic Azad University, P.O. Box 311-86145, Shahreza, Isfahan, Iran; Young Researchers and Elite Club, Shahreza Branch, Islamic Azad University, Shahreza, Iran; Razi Chemistry Research Center (RCRC), Shahreza Branch, Islamic Azad University, Isfahan, Iran.
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Iazdani F, Nezamzadeh-Ejhieh A. Photocatalytic kinetics of 2,4-dichloroaniline degradation by NiO-clinoptilolite nanoparticles. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2021; 250:119228. [PMID: 33257250 DOI: 10.1016/j.saa.2020.119228] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/03/2020] [Revised: 11/04/2020] [Accepted: 11/10/2020] [Indexed: 06/12/2023]
Abstract
The ball-mill clinoptilolite nanoparticles (CNP) was ion-exchanged in Ni(II) solutions and calcined to obtain NiO-CNP catalysts with various NiO loadings. The resultant CNP was ion-exchanged in 0.1, 0.2, 0.3, and 0.4 M Ni(II) solutions and then calcined at 450 °C. The resultant NiO-CNPs contained 1.9, 2.3, 3.0, and 3.2% NiO, respectively. The XRD, FTIR, and DRS characterization techniques were applied. By applying the Scherrer equation on the XRD results, the average crystallite size for the NiO-CNP samples was estimated in the range of 42-65 nm. The pHpzc of the NiO-CNP species was slightly changed from 6.8 to 7.6 by an increase in the loaded NiO. The band gap energy of the samples was calculated by applying the Kubelka-Munk equation on the DRS results. The band gap energies of 3.81, 4.05, and 3.63 eV were estimated for the direct electronic transitions of the CN2, CN2.3, and CN3.2 samples, respectively. The boosted photoactivity was obtained in 2,4-dichloroanilyne (DCA) degradation when NiO supported onto both micronized clinoptilolite and its nanoparticles. The effects of the most important experimental variables on DCA photodegradation rate were kinetically studied by applying the Hinshelwood model on the results. The faster rate for the DCA photodegradation was achieved at the optimal conditions, including the catalyst dose: 0.5 g/L, CDCA: 5 ppm, and the initial pH: 3. Some new peaks were observed in the HPLC chromatograms for the photodegraded DCA solutions after 180 min and 300 min, which showed 84% and 95% DCA photodegradation.
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Affiliation(s)
- Fereshteh Iazdani
- Department of Chemistry, Shahreza Branch, Islamic Azad University, P.O. Box 311-86145, Shahreza, Isfahan, Iran; Young Researchers and Elite Club, Shahreza Branch, Islamic Azad University, Shahreza, Iran
| | - Alireza Nezamzadeh-Ejhieh
- Department of Chemistry, Shahreza Branch, Islamic Azad University, P.O. Box 311-86145, Shahreza, Isfahan, Iran; Young Researchers and Elite Club, Shahreza Branch, Islamic Azad University, Shahreza, Iran; Razi Chemistry Research Center (RCRC), Shahreza Branch, Islamic Azad University, Isfahan, Iran.
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Jafarizadeh T, Hayati P, Neyrizi HZ, Mehrabadi Z, Farjam MH, Gutiérrez A, Adarsh NN. Synthesis and structural characterization of a novel Zn(II) metal organic complex (Zn-MOC) and elimination of highly consumed antibiotic; tetracycline from aqueous solution by their nanostructures photocatalyst under visible light. J Mol Struct 2021. [DOI: 10.1016/j.molstruc.2020.129448] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Improved photocatalytic reduction of mercuric cations over g-C3N4 nanosheets decorated by mesoporous Bi2S3 nanoparticles under visible light illumination. APPLIED NANOSCIENCE 2021. [DOI: 10.1007/s13204-020-01662-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Qiu Y, Xing Z, Guo M, Zhao T, Wang Y, Chen P, Li Z, Pan K, Zhou W. Cadmium sulfide quantum dots/dodecahedral polyoxometalates/oxygen-doped mesoporous graphite carbon nitride with Z-scheme and Type-II as tandem heterojunctions for boosting visible-light-driven photocatalytic performance. J Colloid Interface Sci 2021; 582:752-763. [PMID: 32911419 DOI: 10.1016/j.jcis.2020.08.079] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2020] [Revised: 08/05/2020] [Accepted: 08/22/2020] [Indexed: 12/14/2022]
Abstract
It is known that fabrication of tandem heterojunctions between different types of heterojunctions can promote the charge separation. Herein, novel cadmium sulfide quantum dots (CdS QDs)/dodecahedral phosphotungstic acid potassium K3PW12O40 (KPW)/oxygen-doped mesoporous graphite carbon nitride (meso-g-C3N4) nanosheets tandem heterojunctions are prepared by the hydrothermal method combined with direct template calcination and in-situ chemical sedimentation strategy. The results show that tandem heterojunctions formed by the Z-Scheme heterojunction between CdS QDs and KPW and the type-II heterojunction between CdS QDs and meso-g-C3N4 can extend the optical response into visible light region. Importantly, under visible light irradiation, photocatalytic hydrogen production rate and photocatalytic Cr6+ removal rate over CdS/KPW/meso-g-C3N4 is higher than that of KPW and CdS/KPW. This remarkable photocatalytic performance is due to the effective charge separation and transfer of the special tandem heterojunction structure. This novel tandem heterojunction will offer new insights for fabricating other high-performance photocatalytic systems.
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Affiliation(s)
- Yalu Qiu
- Department of Environmental Science, School of Chemistry and Materials Science, Key Laboratory of Functional Inorganic Material Chemistry, Ministry of Education of the People's Republic of China, Heilongjiang University, Harbin 150080, PR China
| | - Zipeng Xing
- Department of Environmental Science, School of Chemistry and Materials Science, Key Laboratory of Functional Inorganic Material Chemistry, Ministry of Education of the People's Republic of China, Heilongjiang University, Harbin 150080, PR China.
| | - Meijun Guo
- Department of Environmental Science, School of Chemistry and Materials Science, Key Laboratory of Functional Inorganic Material Chemistry, Ministry of Education of the People's Republic of China, Heilongjiang University, Harbin 150080, PR China
| | - Tianyu Zhao
- Department of Environmental Science, School of Chemistry and Materials Science, Key Laboratory of Functional Inorganic Material Chemistry, Ministry of Education of the People's Republic of China, Heilongjiang University, Harbin 150080, PR China
| | - Yu Wang
- Department of Environmental Science, School of Chemistry and Materials Science, Key Laboratory of Functional Inorganic Material Chemistry, Ministry of Education of the People's Republic of China, Heilongjiang University, Harbin 150080, PR China
| | - Peng Chen
- Department of Environmental Science, School of Chemistry and Materials Science, Key Laboratory of Functional Inorganic Material Chemistry, Ministry of Education of the People's Republic of China, Heilongjiang University, Harbin 150080, PR China
| | - Zhenzi Li
- Shandong Provincial Key Laboratory of Molecular Engineering, School of Chemistry and Chemical Engineering, Qilu University of Technology (Shandong Academy of Sciences), Jinan, Shandong 250353, PR China.
| | - Kai Pan
- Department of Environmental Science, School of Chemistry and Materials Science, Key Laboratory of Functional Inorganic Material Chemistry, Ministry of Education of the People's Republic of China, Heilongjiang University, Harbin 150080, PR China
| | - Wei Zhou
- Department of Environmental Science, School of Chemistry and Materials Science, Key Laboratory of Functional Inorganic Material Chemistry, Ministry of Education of the People's Republic of China, Heilongjiang University, Harbin 150080, PR China.
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Abdelrahman EA, Abou El-Reash YG, Youssef HM, Kotp YH, Hegazey RM. Utilization of rice husk and waste aluminum cans for the synthesis of some nanosized zeolite, zeolite/zeolite, and geopolymer/zeolite products for the efficient removal of Co(II), Cu(II), and Zn(II) ions from aqueous media. JOURNAL OF HAZARDOUS MATERIALS 2021; 401:123813. [PMID: 33113742 DOI: 10.1016/j.jhazmat.2020.123813] [Citation(s) in RCA: 58] [Impact Index Per Article: 19.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/19/2020] [Revised: 08/05/2020] [Accepted: 08/22/2020] [Indexed: 05/12/2023]
Abstract
In this paper, rice husk and waste aluminum cans were exploited as silicon and aluminum sources, respectively for the low-cost synthesis of some nanosized zeolite, zeolite/zeolite, and geopolymer/zeolite products. XRD confirmed that the synthesized geopolymer/zeolite products are geopolymer/zeolite A (has a crystallite size of 58.44 nm & abbreviated as G1) and geopolymer/faujasite (has a crystallite size of 25.58 and 20.26 nm & abbreviated as G2 and G3, respectively). Also, the synthesized zeolite products are sodium aluminum silicate hydrate (has a crystallite size of 27.65 and 41.85 nm & abbreviated as H1 and H2, respectively). Besides, the synthesized zeolite/zeolite product is sodium aluminum silicate hydrate/zeolite A (has a crystallite size of 66.01 nm and abbreviated as H3). Moreover, the synthesized products were characterized using other tools such as HR-TEM, FE-SEM, EDX, and FT-IR. The synthesized products were efficiently applied for removing Co(II), Cu(II), and Zn(II) ions from aqueous media and wastewater which was taken from Abuzaabal- Qalyubiyah-Egypt. The maximum uptake capacity of G3 sample toward Co(II), Cu(II), and Zn(II) ions is 134.24 ± 1.26, 126.26 ± 0.32, and 131.93 ± 0.87 mg/g, respectively. The uptake of the studied metal ions is spontaneous, chemical, exothermic, and fitted well with the Langmuir isotherm and pseudo-2nd-order kinetic model.
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Affiliation(s)
- Ehab A Abdelrahman
- Chemistry Department, Faculty of Science, Benha University, Benha, 13518, Egypt.
| | - Y G Abou El-Reash
- Department of Chemistry, Faculty of Science, Mansoura University, Mansoura, 35516, Egypt
| | - Hany M Youssef
- Department of Chemistry, Faculty of Science, Mansoura University, Mansoura, 35516, Egypt; Department of Chemistry, College of Science and Humanities in Al-Kharj, Prince Sattam Bin Abdulaziz University, Al-Kharj, 11942, Saudi Arabia
| | - Yousra H Kotp
- Hydrogeochemistry Dept., Desert Research Center, El Mataryia Cairo, 11753, Egypt
| | - R M Hegazey
- Egyptian Petroleum Research Institute, Ahmed El Zumer Street, Nasr City, Hai Al-Zehour, Cairo, 11727, Egypt
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Ghattavi S, Nezamzadeh-Ejhieh A. A double-Z-scheme ZnO/AgI/WO3 photocatalyst with high visible light activity: Experimental design and mechanism pathway in the degradation of methylene blue. J Mol Liq 2021. [DOI: 10.1016/j.molliq.2020.114563] [Citation(s) in RCA: 28] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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16
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Omrani N, Nezamzadeh-Ejhieh A. BiVO 4/WO 3 nano-composite: characterization and designing the experiments in photodegradation of sulfasalazine. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2020; 27:44292-44305. [PMID: 32767008 DOI: 10.1007/s11356-020-10278-1] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/20/2019] [Accepted: 07/27/2020] [Indexed: 06/11/2023]
Abstract
A BiVO4-WO3 nano-composite (NC) was hydrothermally prepared and characterized by different techniques including X-ray diffraction (XRD), scanning electron microscope equipped with an energy-dispersive X-ray (EDX) analyzer, X-ray mapping, UV-Vis reflectance spectroscopy (DRS), and photoluminescence spectroscopy (PL). The average crystallite size of 8.5 nm was estimated for the composite by the Williamson-Hall equation. The band gap energies of 2.46, 3.02, and 2.95 eV were obtained for the direct electronic transitions of BiVO4, WO3, and the composite, respectively. The point of zero charges (pHpzc) of the composite was also estimated at 5. The composite was then used in the photodegradation of sulfasalazine (SSZ). When the moles of WO3 was four times greater than BiVO4, the best photocatalytic activity and the lowest PL intensity were obtained. The simultaneous effects of the experimental variables on the boosted photocatalytic activity of the composite (to the single semiconductors) were studied by the response surface methodology (RSM). A significant quadratic model was confirmed for processing the data based on the F value of a model F value of 63.55 > F0.05, 14, 13 = 2.55. This was also confirmed by LOF F value of 2.56 < F0.05, 10, 3 = 8.79. Besides, the multiple correlation coefficients R2 (R2 = 0.9856), adjusted R2 (adj-R2 = 0.9701), and predicted R2 (pred-R2 = 0.9098) confirm the goodness of the model. The optimal run included CSSZ 9 mg/L, pH 4, 40 min irradiation time, and 0.8 g/L of the composite under the visible light irradiation.
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Affiliation(s)
- Narges Omrani
- Department of Chemistry, Shahreza Branch, Islamic Azad University, P.O. Box 311-86145, Shahreza, Isfahan, Iran
- Young Researchers and Elite Club, Shahreza Branch, Islamic Azad University, Shahreza, Iran
| | - Alireza Nezamzadeh-Ejhieh
- Department of Chemistry, Shahreza Branch, Islamic Azad University, P.O. Box 311-86145, Shahreza, Isfahan, Iran.
- Young Researchers and Elite Club, Shahreza Branch, Islamic Azad University, Shahreza, Iran.
- Razi Chemistry Research Center (RCRC), Shahreza Branch, Islamic Azad University, Shahreza, Isfahan, Iran.
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17
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Focus on the photocatalytic pathway of the CdS-AgBr nano-catalyst by using the scavenging agents. Sep Purif Technol 2020. [DOI: 10.1016/j.seppur.2020.117235] [Citation(s) in RCA: 43] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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18
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Kadi MW, Mohamed RM, Ismail AA, Bahnemann DW. Decoration of g-C3N4 nanosheets by mesoporous CoFe2O4 nanoparticles for promoting visible-light photocatalytic Hg(II) reduction. Colloids Surf A Physicochem Eng Asp 2020. [DOI: 10.1016/j.colsurfa.2020.125206] [Citation(s) in RCA: 57] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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19
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Preparation, characterization, and investigation of the catalytic property of α-Fe2O3-ZnO nanoparticles in the photodegradation and mineralization of methylene blue. Chem Phys Lett 2020. [DOI: 10.1016/j.cplett.2020.137587] [Citation(s) in RCA: 52] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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20
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Li J, Li M, Song Q, Wang S, Cui X, Liu F, Liu X. Efficient recovery of Cu(II) by LTA-zeolites with hierarchical pores and their resource utilization in electrochemical denitrification: Environmentally friendly design and reutilization of waste in water. JOURNAL OF HAZARDOUS MATERIALS 2020; 394:122554. [PMID: 32240901 DOI: 10.1016/j.jhazmat.2020.122554] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/10/2020] [Revised: 03/14/2020] [Accepted: 03/16/2020] [Indexed: 06/11/2023]
Abstract
Water pollution seriously endangers human health and the environment. Here we prepared and tested mesoporous LTA zeolites for the adsorption of Cu(II) from aqueous media and the captured copper was further used for electrochemical nitrate reduction. The prepared hierarchically porous LTA exhibited a high capacity (341.5 mg g-1) for Cu(II) adsorption, following the pseudo-second-order kinetic and Freundlich adsorption isotherm models well. The Cu-LTA sample was characterised by various analytical methods, and Cu(I) species were identified as the active sites for nitrate electrochemical reduction. Based on the spectral characterization and reducibility, strong metal-support interaction was found between copper and LTA, which is beneficial to the dispersion of active sites and their contacts with nitrates. In total, 10.1 g-N-NO3 g-1-Cu was reduced over the Cu-LTA-modified cathode in a three-electrode system with high N2 selectivity (92.1 %). Compared to purely microporous zeolites, mesoporous LTA has a higher capacity for Cu(II) removal and nitrate reduction. The mesoporous structure allows easy access to the inner active sites with low diffusion resistance. The low Tafel slope and high current density confirm the high activity of the mesoporous Cu-LTA, making it a promising and efficient material for the removal and reuse of heavy metal ions.
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Affiliation(s)
- Jiacheng Li
- Scholl of Environment, Tsinghua University, 30# Shuangqing Road, Hai Dian Distract, Beijing, 100086, China
| | - Miao Li
- Scholl of Environment, Tsinghua University, 30# Shuangqing Road, Hai Dian Distract, Beijing, 100086, China.
| | - Qinan Song
- Scholl of Environment, Tsinghua University, 30# Shuangqing Road, Hai Dian Distract, Beijing, 100086, China
| | - Sai Wang
- Scholl of Environment, Tsinghua University, 30# Shuangqing Road, Hai Dian Distract, Beijing, 100086, China
| | - Xiaofeng Cui
- Scholl of Environment, Tsinghua University, 30# Shuangqing Road, Hai Dian Distract, Beijing, 100086, China
| | - Fang Liu
- Scholl of Environment, Tsinghua University, 30# Shuangqing Road, Hai Dian Distract, Beijing, 100086, China
| | - Xiang Liu
- Scholl of Environment, Tsinghua University, 30# Shuangqing Road, Hai Dian Distract, Beijing, 100086, China
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21
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Mendiratta S, Ali AAA. Recent Advances in Functionalized Mesoporous Silica Frameworks for Efficient Desulfurization of Fuels. NANOMATERIALS (BASEL, SWITZERLAND) 2020; 10:E1116. [PMID: 32516988 PMCID: PMC7353462 DOI: 10.3390/nano10061116] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/29/2020] [Revised: 05/29/2020] [Accepted: 06/03/2020] [Indexed: 11/22/2022]
Abstract
Considerable health and climate benefits arising from the use of low-sulfur fuels has propelled the research on desulfurization of fossil fuels. Ideal fuels are urgently needed and are expected to be ultra-low in sulfur (10-15 ppm), with no greater than 50 ppm sulfur content. Although several sulfur removal techniques are available in refineries and petrochemical units, their high operational costs, complex operational needs, low efficiencies, and higher environmental risks render them unviable and challenging to implement. In recent years, mesoporous silica-based materials have emerged as promising desulfurizing agents, owing to their high porosity, high surface area, and easier functionalization compared to conventional materials. In this review, we report on recent progress in the synthesis and chemistry of new functionalized mesoporous silica materials aiming to lower the sulfur content of fuels. Additionally, we discuss the role of special active sites in these sorbent materials and investigate the formulations capable of encapsulating and trapping the sulfur-based molecules, which are challenging to remove due to their complexity, for example the species present in JP-8 jet fuels.
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Affiliation(s)
- Shruti Mendiratta
- Department of Chemical and Petroleum Engineering, University of Calgary, Calgary, AB T2N1N4, Canada
| | - Ahmed Atef Ahmed Ali
- Department of Chemical and Petroleum Engineering, University of Calgary, Calgary, AB T2N1N4, Canada
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22
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Ghribi F, Sehailia M, Aoudjit L, Touahra F, Zioui D, Boumechhour A, Halliche D, Bachari K, Benmaamar Z. Solar-light promoted photodegradation of metronidazole over ZnO-ZnAl2O4 heterojunction derived from 2D-layered double hydroxide structure. J Photochem Photobiol A Chem 2020. [DOI: 10.1016/j.jphotochem.2020.112510] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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23
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Ultrasensitive determination of mercury ions using a glassy carbon electrode modified with nanocomposites consisting of conductive polymer and amino-functionalized graphene quantum dots. Mikrochim Acta 2020; 187:210. [PMID: 32152671 DOI: 10.1007/s00604-020-4191-1] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2019] [Accepted: 02/24/2020] [Indexed: 10/24/2022]
Abstract
A one-pot method based on cyclic voltammetric scan was used to fabricate a glassy carbon electrode modified with nanocomposites consisting of poly(thionine) and amino-functionalized graphene quantum dots (afGQDs). Under near-neutral conditions, the dye polymer was effectively oxidized by hydroxyl radicals (·OH) that were derived from the copper-catalyzed Fenton-like reaction, and the cathodic peak current on the modified electrode greatly increased. The reaction of Cu2+ with thiourea (TU) and the generation of a complex, CuTU2+, led to the decrease of Cu2+/Cu+ species, which inhibited the Fenton-like reaction and reduced the electrochemical response change. Due to a displacement reaction, the addition of Hg2+ into the H2O2-Cu2+-TU system resulted in the release of cuprous ions that benefited the Fenton-like reaction. Under the following optimal conditions: 6 mg mL-1 afGQDs and the 25-cycle potential cycling for the fabrication of the modified electrode, pH 6.5, and the [Formula: see text] ratio of 1.0, the increasing extent of the cathodic peak current exhibited a good linear response to the logarithm of the Hg2+ concentration in the range of 1 pM-1 μM with a detection limit of 0.6 pM. Mercury ions in a water sample were determined with good recovery, ranging from 97 to 103%. The investigation on the uptake of Hg2+ into human vascular endothelial cells, HUVEC, shows that the cells incubated in the high-concentration glucose medium absorbed more mercury ions than HUVEC incubated in the normal medium. As a result, Hg2+ could lead to the greater damage to the former. Graphical abstract.
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24
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Pereira Costa G, Rafael RA, Soares JCS, Gaspar AB. Synthesis and characterization of ZnO-Nb2O5 catalysts for photodegradation of bromophenol blue. Catal Today 2020. [DOI: 10.1016/j.cattod.2019.04.059] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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25
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Omrani N, Nezamzadeh-Ejhieh A. Focus on scavengers’ effects and GC-MASS analysis of photodegradation intermediates of sulfasalazine by Cu2O/CdS nanocomposite. Sep Purif Technol 2020. [DOI: 10.1016/j.seppur.2019.116228] [Citation(s) in RCA: 92] [Impact Index Per Article: 23.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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26
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Das S, Mahalingam H. Novel immobilized ternary photocatalytic polymer film based airlift reactor for efficient degradation of complex phthalocyanine dye wastewater. JOURNAL OF HAZARDOUS MATERIALS 2020; 383:121219. [PMID: 31546218 DOI: 10.1016/j.jhazmat.2019.121219] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/08/2019] [Revised: 09/10/2019] [Accepted: 09/11/2019] [Indexed: 06/10/2023]
Abstract
Reduced graphene oxide (rGO) as well as graphitic carbon nitride (g-C3N4) catalysts were synthesized and a physical admixture of rGO and g-C3N4 along with TiO2 in the ratio of 1:1:1 by weight was immobilized in a polystyrene film using the facile solvent casting method. An internal loop airlift reactor with a working volume of 1.2 litres incorporating the prepared polymer-based photocatalytic film was designed and tested for the photocatalytic degradation of remazol turquoise blue dye synthetic wastewater. The reactor parameters affecting the photocatalytic activity such as airflow rate and Di/Do (ratio of draft tube diameter to outer tube diameter) were evaluated. The successful operation of the reactor obtained using the ternary immobilized catalyst mixture film gave 92.25% total organic carbon reduction and 94% decolourization within 140 min, compared to 91% decolourization by the slurry form within 40 min. Complete and quicker decolourization of the dye was also demonstrated under the influence of O3 or H2O2. The immobilized catalyst was successfully reused four times. The ternary catalyst admixture employed in this work and the unique design of the photocatalytic reactor helps to increase the degradation rate of toxic textile effluents thus making it suitable for larger scales of treatment.
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Affiliation(s)
- Suman Das
- Department of Chemical Engineering, National Institute of Technology Karnataka (NITK) Surathkal, Mangalore, 575025, Karnataka, India
| | - Hari Mahalingam
- Department of Chemical Engineering, National Institute of Technology Karnataka (NITK) Surathkal, Mangalore, 575025, Karnataka, India.
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27
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Liu Q, Liu B, Liu Q, Xu R, Xia H. Lattice substitution and desulfurization kinetic analysis of Zn-based spinel sorbents loading onto porous silicoaluminophosphate zeolites. JOURNAL OF HAZARDOUS MATERIALS 2020; 383:121151. [PMID: 31678744 DOI: 10.1016/j.jhazmat.2019.121151] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/15/2019] [Revised: 09/02/2019] [Accepted: 09/03/2019] [Indexed: 06/10/2023]
Abstract
Green Zn-based spinel sorbents for hot coal gas desulfurization have been developed with the assistance of optimization procedures. The pilot study highlights an outstanding ordered mesoporous support (SBET = 323 m2 g-1, Da = 4.3 nm) of SAPO-34@as-prepared SBA-15 (SS) for loading active metal oxides. ZnCo2O4 spinel loaded onto SS (ZnCo2/SS) exhibits a prominent desulfurization performance compared to other sorbents whose partial Co is substituted by Mn or Fe in spinel B-site, owing to the slight effect of PO43- in SS. After systematic evaluation on role of sulfidation condition, 50 wt% ZnCo2/SS sorbent possesses the sulfur storage capacity of 138.08 mg g-1at550 °C and little loss of active species in 5 desulfurization-regeneration cycles. Results of high resolution transmission electron microscopy (HRTEM), Brunauer-Emmett-Teller (BET), X-ray photoelectron spectroscopy (XPS) etc. demonstrate that 70.42% of initial sulfur capacity of ZnCo2/SS presented in the 2nd utilization is associated with zinc evaporation, existence of high stable sulfides and partial sintering. The improved deactivation kinetic model suitably describes that the H2S concentration distribution relates with the spatial position of fixed-bed reactor and desulfurization time.
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Affiliation(s)
- Qiang Liu
- Department of Chemistry, Tianjin University, and The National Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin 300072, People's Republic of China
| | - Bingsi Liu
- Department of Chemistry, Tianjin University, and The National Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin 300072, People's Republic of China.
| | - Qinze Liu
- School of Materials Science and Engineering, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250353, People's Republic of China
| | - Rongnian Xu
- State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, People's Republic of China
| | - Hong Xia
- Department of Chemistry, Tianjin University, and The National Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin 300072, People's Republic of China
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28
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Luo M, Li M, Jiang S, Shao H, Razal J, Wang D, Fang J. Supported growth of inorganic-organic nanoflowers on 3D hierarchically porous nanofibrous membrane for enhanced enzymatic water treatment. JOURNAL OF HAZARDOUS MATERIALS 2020; 381:120947. [PMID: 31394395 DOI: 10.1016/j.jhazmat.2019.120947] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/10/2019] [Revised: 07/16/2019] [Accepted: 07/28/2019] [Indexed: 06/10/2023]
Abstract
Organic-inorganic nanoflower is a new type of functional material that can effectively immobilize a wide range of enzymes to form flower-like structures for various enzymatic applications with enhanced catalytic performance and stability. In order to avoid the processing inconvenience and flower structure damage caused by the particular form of these hybrid nanoflowers during material fabrication and catalytic application, different substrates have been used to carry out supported growth of hybrid nanoflowers. However, all previously used substrates have only 2-dimensional feature and only incorporate hybrid nanoflowers on surface with limited nanoflower loading. In this study, three-dimensional (3D) hierarchically porous nanofibrous PVA-co-PE membranes (HPNM) are prepared by a simple template method for effectively immobilizing laccase-Cu2(PO4)3•3H2O hybrid nanoflowers. Compared with dense nanofibre membrane with only small sized pores (<1 micron), the coexistence of both small and large sized (30-80 microns) pores of HPNM could significantly increase the nanoflower density and allow the penetrated growth of hybrid nanoflowers into the inner structure of the membrane. The hybrid nanoflower containing hierarchically porous nanofibrous membranes (HNF-HPNM) show excellent catalytic performance in degrading different types of textile dyes (reactive blue 2, acid blue 25, acid yellow 76 and indigo carmine), with a degradation efficiency of ˜99.5% for indigo carmine. In addition, the HNF-HPNM could be reused at least 14 times for indigo carmine degradation, with a negligible degradation efficiency drop from 99.48% to 98.52%. These results indicate that hierarchically porous nanofibrous membrane can be a promising type of materials for supported hybrid nanoflower growth for practical applications such as waste water treatment, dye degradation and biosensing.
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Affiliation(s)
- Mengying Luo
- Institute of Science and Technology, Wuhan Textile University, Wuhan 430200, China; Deakin University, Institute for Frontier Materials, Geelong, VIC, 3216, Australia
| | - Mufang Li
- Institute of Science and Technology, Wuhan Textile University, Wuhan 430200, China; Hebei Key Laboratory of Advanced Textile Materials & Application, Wuhan 430200, China.
| | - Shan Jiang
- Deakin University, Institute for Frontier Materials, Geelong, VIC, 3216, Australia
| | - Hao Shao
- Deakin University, Institute for Frontier Materials, Geelong, VIC, 3216, Australia
| | - Joselito Razal
- Deakin University, Institute for Frontier Materials, Geelong, VIC, 3216, Australia
| | - Dong Wang
- Institute of Science and Technology, Wuhan Textile University, Wuhan 430200, China; Hebei Key Laboratory of Advanced Textile Materials & Application, Wuhan 430200, China
| | - Jian Fang
- Deakin University, Institute for Frontier Materials, Geelong, VIC, 3216, Australia.
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29
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Behera A, Kandi D, Martha S, Parida K. Constructive Interfacial Charge Carrier Separation of a p-CaFe2O4@n-ZnFe2O4 Heterojunction Architect Photocatalyst toward Photodegradation of Antibiotics. Inorg Chem 2019; 58:16592-16608. [DOI: 10.1021/acs.inorgchem.9b02610] [Citation(s) in RCA: 45] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Arjun Behera
- Centre for Nano Science and Nano Technology, Siksha ‘O’ Anusandhan (Deemed to be University), Bhubaneswar 751030, India
| | - Debasmita Kandi
- Centre for Nano Science and Nano Technology, Siksha ‘O’ Anusandhan (Deemed to be University), Bhubaneswar 751030, India
| | - Satyabadi Martha
- Centre for Nano Science and Nano Technology, Siksha ‘O’ Anusandhan (Deemed to be University), Bhubaneswar 751030, India
| | - Kulamani Parida
- Centre for Nano Science and Nano Technology, Siksha ‘O’ Anusandhan (Deemed to be University), Bhubaneswar 751030, India
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30
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Yao T, Qi Y, Mei Y, Yang Y, Aleisa R, Tong X, Wu J. One-step preparation of reduced graphene oxide aerogel loaded with mesoporous copper ferrite nanocubes: A highly efficient catalyst in microwave-assisted Fenton reaction. JOURNAL OF HAZARDOUS MATERIALS 2019; 378:120712. [PMID: 31203127 DOI: 10.1016/j.jhazmat.2019.05.105] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/18/2018] [Revised: 03/14/2019] [Accepted: 05/30/2019] [Indexed: 06/09/2023]
Abstract
Heterogeneous Fenton reaction is an attractive method for degradation of organic pollutants due to its high efficiency and non-selectivity and it also causes no secondary pollution. However, low degradation rate and poor recyclability of the catalysts limit its applications for water purification. To overcome this, herein, copper ferrite/reduced graphene oxide (CF/rGO) aerogel was prepared by a one-step hydrothermal method, as a highly efficient catalyst for the microwave-assisted Fenton reaction (MAFR). Under optimal conditions (500 W of microwave power, 600 μL of H2O2, 15 mg of catalyst, and 30 mg/L of RhB), the degradation efficiency of CF/rGO aerogel at 1.0 min (95.7%) was higher than that of reference samples at 3.0 min. Thermodynamical study showed the activation energy, enthalpy change, entropy change, and Gibbs free energy change were 0.73 kJ/mol, -49.5 kJ/mol, -0.135 kJ/mol·K, and -6.8 kJ/mol, respectively, indicating that MAFR was an endothermic and non-spontaneous process.Radical trapping experiments showed that OH, O2-, and h+ played a combined role in RhB degradation. Besides high catalytic activity, CF/rGO aerogel also displayed good reusability, showing removal efficiency of 87.4% after 5 cycles. The high efficiency, good reusability, and simple process make CF/rGO aerogel a promising catalyst for wastewater treatment.
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Affiliation(s)
- Tongjie Yao
- MIIT Key Lab of Critical Materials Technology for New Energy Conversion and Storage, School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin, 150001, China.
| | - Yi Qi
- Key Laboratory of Functional Inorganic Material Chemistry, Ministry of Education, School of Chemistry and Materials Science, Heilongjiang University, Harbin 150080, China
| | - Yuqing Mei
- Key Laboratory of Functional Inorganic Material Chemistry, Ministry of Education, School of Chemistry and Materials Science, Heilongjiang University, Harbin 150080, China
| | - Yang Yang
- MIIT Key Lab of Critical Materials Technology for New Energy Conversion and Storage, School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin, 150001, China
| | - Rashed Aleisa
- Department of Chemistry, University of California, Riverside, CA, 92521, USA
| | - Xin Tong
- Key Laboratory of Functional Inorganic Material Chemistry, Ministry of Education, School of Chemistry and Materials Science, Heilongjiang University, Harbin 150080, China
| | - Jie Wu
- Key Laboratory of Functional Inorganic Material Chemistry, Ministry of Education, School of Chemistry and Materials Science, Heilongjiang University, Harbin 150080, China.
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31
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Cheng D, Li Y, Yang L, Luo S, Yang L, Luo X, Luo Y, Li T, Gao J, Dionysiou DD. One-step reductive synthesis of Ti 3+ self-doped elongated anatase TiO 2 nanowires combined with reduced graphene oxide for adsorbing and degrading waste engine oil. JOURNAL OF HAZARDOUS MATERIALS 2019; 378:120752. [PMID: 31229881 DOI: 10.1016/j.jhazmat.2019.120752] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/15/2019] [Revised: 04/13/2019] [Accepted: 06/07/2019] [Indexed: 05/27/2023]
Abstract
A sustainable photocatalyst of Ti3+ self-doped elongated anatase nanowires combined with reduced graphene oxide (TiO2 NWs@rGO) was prepared via a facile one-step reductive synthesis process using NaBH4 as reductant for the first time. The obtained optimal TiO2 NWs@rGO composite has a large surface area,182 m2 g-1, which demonstrates strong adsorption capacity due to the multilayered structure built by highly crystallized nanowires of TiO2 and ultrathin rGO layers. When the photocatalyst was applied in removing waste engine oil (100 mL, 50 mg L-1), it exhibited outstanding performance with up to COD 98.6% removal extent (from 145 initial to 2 mg L-1 final COD) after 5 h, which is 34.1% higher than that of TiO2 NWs (64.5% COD removal extent). Gas chromatography-mass spectrometry analyses of residual waste engine oil after photocatalysis shows significant reductions of C6-C19 chemicals as well as total disappear of C15,C16, C17, C18 chemicals. The outstanding photocatalytic activity of TiO2 NWs@rGO benefits from sensitive response to visible light, improved surface reactivity and high electron flux enabled by rGO and Ti3+ in TiO2. In addition, this composite catalyst can be self-cleaned, and recycled for reuse, which suggests promising potential for waste engine oil treatment.
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Affiliation(s)
- Dandan Cheng
- High Level Laboratory of Jiangxi Province for Persistent Pollutants Control, Recycle and Reuse, Nanchang Hangkong University, Nanchang, 330063, PR China; College of Environmental and Chemical Engineering, Nanchang Hangkong University, Nanchang, 330063, PR China
| | - Yaobang Li
- High Level Laboratory of Jiangxi Province for Persistent Pollutants Control, Recycle and Reuse, Nanchang Hangkong University, Nanchang, 330063, PR China; College of Environmental and Chemical Engineering, Nanchang Hangkong University, Nanchang, 330063, PR China
| | - Lixia Yang
- High Level Laboratory of Jiangxi Province for Persistent Pollutants Control, Recycle and Reuse, Nanchang Hangkong University, Nanchang, 330063, PR China; College of Environmental and Chemical Engineering, Nanchang Hangkong University, Nanchang, 330063, PR China.
| | - Shenglian Luo
- High Level Laboratory of Jiangxi Province for Persistent Pollutants Control, Recycle and Reuse, Nanchang Hangkong University, Nanchang, 330063, PR China; College of Environmental and Chemical Engineering, Nanchang Hangkong University, Nanchang, 330063, PR China.
| | - Liming Yang
- High Level Laboratory of Jiangxi Province for Persistent Pollutants Control, Recycle and Reuse, Nanchang Hangkong University, Nanchang, 330063, PR China; College of Environmental and Chemical Engineering, Nanchang Hangkong University, Nanchang, 330063, PR China
| | - Xubiao Luo
- High Level Laboratory of Jiangxi Province for Persistent Pollutants Control, Recycle and Reuse, Nanchang Hangkong University, Nanchang, 330063, PR China; College of Environmental and Chemical Engineering, Nanchang Hangkong University, Nanchang, 330063, PR China
| | - Yan Luo
- High Level Laboratory of Jiangxi Province for Persistent Pollutants Control, Recycle and Reuse, Nanchang Hangkong University, Nanchang, 330063, PR China; College of Environmental and Chemical Engineering, Nanchang Hangkong University, Nanchang, 330063, PR China
| | - Tingting Li
- High Level Laboratory of Jiangxi Province for Persistent Pollutants Control, Recycle and Reuse, Nanchang Hangkong University, Nanchang, 330063, PR China; College of Environmental and Chemical Engineering, Nanchang Hangkong University, Nanchang, 330063, PR China
| | - Jiong Gao
- Environmental Engineering and Science Program, Department of Chemical and Environmental Engineering (DChEE), 705 Engineering Research Center, University of Cincinnati, Cincinnati, OH, USA
| | - Dionysios D Dionysiou
- Environmental Engineering and Science Program, Department of Chemical and Environmental Engineering (DChEE), 705 Engineering Research Center, University of Cincinnati, Cincinnati, OH, USA
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In situ formation of small-scale Ag2S nanoparticles in carbonaceous aerogel for enhanced photodegradation performance. J Mol Liq 2019. [DOI: 10.1016/j.molliq.2019.111476] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Taourati R, Khaddor M, El Kasmi A. Stable ZnO nanocatalysts with high photocatalytic activity for textile dye treatment. ACTA ACUST UNITED AC 2019. [DOI: 10.1016/j.nanoso.2019.100303] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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Guan J, Li J, Ye Z, Wu D, Liu C, Wang H, Ma C, Huo P, Yan Y. La2O3 media enhanced electrons transfer for improved CeVO4@halloysite nanotubes photocatalytic activity for removing tetracycline. J Taiwan Inst Chem Eng 2019. [DOI: 10.1016/j.jtice.2018.10.030] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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Shokrollahi A, Sharifnia S. Optimization of Aqueous NH4+/NH3 Photodegradation by ZnO/Zeolite Y Composites Using Response Surface Modeling. INTERNATIONAL JOURNAL OF CHEMICAL REACTOR ENGINEERING 2019. [DOI: 10.1515/ijcre-2018-0042] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
In this study, ZnO/Zeolite Y composites were synthesized by the solid state dispersion method and employed in order to investigate their photocatalytic performance in NH4+/NH3 removal from an aqueous solution. FTIR spectroscopy, UV-vis diffuse reflectance spectroscopy, SEM and EDX analyses were applied to characterize these composites. The three-factor, three-level Box-Behnken experimental design (BBD), as one of the response surface methodology (RSM), was used to achieve maximum removal of aqueous NH4+/NH3 under optimum conditions by ZnO/Zeolite Y composites. The effects of parameters such as ZnO loading (10–50 wt %), initial pollutant concentration (25–315 mg/L) and solution pH (3–11) as well as their interactions were determined on removal of NH4+/NH3 by the mentioned method. It was found that pH of the solution with the percentage contribution of 86.79 %, was the most important parameter among the others. A second-order polynomial equation was well fitted on the experimental data with the determination coefficient value of 0.9932 and the adjusted determination coefficient value of 0.9864. It could not describe only 0.68 % of observed changes in the response. The predicted removal percentage of NH4+/NH3 at the optimal conditions (pH = 11, NH4+/NH3 initial concentration (207.21 mg/L) and ZnO loading (45.02 wt %)) was achieved 62.26 %, which was in agreement with its experimental value (65 %) obtained in similar conditions.
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Deep-red emitting zinc and aluminium co-doped copper indium sulfide quantum dots for luminescent solar concentrators. J Colloid Interface Sci 2019; 534:509-517. [DOI: 10.1016/j.jcis.2018.09.065] [Citation(s) in RCA: 36] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2018] [Revised: 09/17/2018] [Accepted: 09/18/2018] [Indexed: 01/06/2023]
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Visible-light driven photocatalyst of CdTe/CdS homologous heterojunction on N-rGO photocatalyst for efficient degradation of 2,4-dichlorophenol. J Taiwan Inst Chem Eng 2018. [DOI: 10.1016/j.jtice.2018.09.005] [Citation(s) in RCA: 39] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
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Che H, Che G, Jiang E, Liu C, Dong H, Li C. A novel Z-Scheme CdS/Bi3O4Cl heterostructure for photocatalytic degradation of antibiotics: Mineralization activity, degradation pathways and mechanism insight. J Taiwan Inst Chem Eng 2018. [DOI: 10.1016/j.jtice.2018.05.004] [Citation(s) in RCA: 79] [Impact Index Per Article: 13.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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39
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Bera KK, Majumdar R, Chakraborty M, Bhattacharya SK. Phase control synthesis of α, β and α/β Bi 2O 3 hetero-junction with enhanced and synergistic photocatalytic activity on degradation of toxic dye, Rhodamine-B under natural sunlight. JOURNAL OF HAZARDOUS MATERIALS 2018; 352:182-191. [PMID: 29609150 DOI: 10.1016/j.jhazmat.2018.03.029] [Citation(s) in RCA: 80] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/08/2017] [Revised: 03/14/2018] [Accepted: 03/15/2018] [Indexed: 06/08/2023]
Abstract
Nano particles of a few α/β Bi2O3 hetero-junctions of various compositions synthesized by one- pot hydrothermal method, exhibit exceptional and synergistic photo-catalytic activity for the degradation of Rhodamine-B in aqueous solution under natural sunlight. Pure α and pure β Bi2O3 are also synthesized by control post heating of synthesized hetero-junction. The nano-materials were characterized by diffraction (XRD), microscopic and spectroscopic techniques. The XRD reveals α-β phase hetero-junctions of Bi2O3 are made of α-Bi2O3 and β-Bi2O3 with average dimensions within 13-113 and 5-71 nm respectively and having band gap range of 2.4- 2.9 eV. The spectrophotometrically determined % degradation of the dye and associated rate constant on the best hetero-junction are increased by 4.5(/2.1) and 3.3(/1.2) times than these on pure α (/β). The effects of operational parameters and trapping agents have been analyzed. The maximum removal of the dye was achieved up to 99.6% in 3 h using 0.5 g/L photo-catalyst at pH 3. The reusability test shows that the photo-catalytic activity is retained excellently due to change in chemical nature of the catalyst from α -Bi2O3 to β-Bi2O3, Bi2O2CO3 and BiOCl. A suitable mechanism is proposed.
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Affiliation(s)
- Kamal Kanti Bera
- Physical Chemistry Section, Department of Chemistry, Jadavpur University, Kolkata, 700032, India
| | - Rituparna Majumdar
- Physical Chemistry Section, Department of Chemistry, Jadavpur University, Kolkata, 700032, India
| | - Malay Chakraborty
- Physical Chemistry Section, Department of Chemistry, Jadavpur University, Kolkata, 700032, India
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Guan DL, Niu CG, Wen XJ, Guo H, Deng CH, Zeng GM. Enhanced Escherichia coli inactivation and oxytetracycline hydrochloride degradation by a Z-scheme silver iodide decorated bismuth vanadate nanocomposite under visible light irradiation. J Colloid Interface Sci 2018; 512:272-281. [DOI: 10.1016/j.jcis.2017.10.068] [Citation(s) in RCA: 59] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2017] [Revised: 10/15/2017] [Accepted: 10/16/2017] [Indexed: 11/26/2022]
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Yao K, Li J, Shan S, Jia Q. One-step synthesis of urchinlike SnS/SnS2 heterostructures with superior visible-light photocatalytic performance. CATAL COMMUN 2017. [DOI: 10.1016/j.catcom.2017.07.019] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023] Open
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42
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Thiol Functionalized Cross-Linked Chitosan Polymer Supporting Palladium for Oxidative Heck Reaction and Reduction of p-Nitrophenol. Catal Letters 2017. [DOI: 10.1007/s10562-017-2174-6] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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43
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Nosuhi M, Nezamzadeh-Ejhieh A. High catalytic activity of Fe(II)-clinoptilolite nanoparticales for indirect voltammetric determination of dichromate: Experimental design by response surface methodology (RSM). Electrochim Acta 2017. [DOI: 10.1016/j.electacta.2016.12.011] [Citation(s) in RCA: 101] [Impact Index Per Article: 14.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Derikvandi H, Nezamzadeh-Ejhieh A. Synergistic effect of p-n heterojunction, supporting and zeolite nanoparticles in enhanced photocatalytic activity of NiO and SnO 2. J Colloid Interface Sci 2016; 490:314-327. [PMID: 27914330 DOI: 10.1016/j.jcis.2016.11.069] [Citation(s) in RCA: 70] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2016] [Revised: 11/15/2016] [Accepted: 11/19/2016] [Indexed: 11/25/2022]
Abstract
Increased photocatalytic activity of NiO and SnO2 was achieved by coupling and supporting of them onto clinoptilolite nanoparticles (NC) via calcination of Ni(II)-Sn(IV) - exchanged NC in photocatalytic degradation of metronidazole (MZ) aqueous solution. XRD, XRF, FTIR, SEM, X-ray mapping, DRS, TEM, BET Cyclic voltammetry and electrochemical impedance spectroscopy techniques (EIS) were used for characterization of samples. Red shift occurred in bang gap energies of the coupled semiconductors with respect to monocomponent one. This p-n hetero-junction forms a depletion layer in the semiconductors interface with negative and positive charges, causing considerable enhancement in the photocatalytic activity. The calcined catalyst at 600°C for 4h showed the best photocatalytic activity and charge transfer efficiency (in EIS results). The mole ratio of SnO2/NiO affects the degradation activity of the catalysts and the best activity were was obtained for the NiO1.1-SnO2(6.7)/NC (NS5-NC) catalyst at pH 3, 1.2gL-1 of the catalyst and 2mgL-1 of MZ. SnO2 played electron sink role and the photogenerated electrons migrate from more negative Cb-NiO (E=-3.0V) to Cb-SnO2 (E=-0.3V vs SHE). Initial pH of MZ solution was changed from 6.20 to 4.73 during 180min that confirms formation of Oxalic acid and Maleic acid.
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Affiliation(s)
- Hadis Derikvandi
- Department of Chemistry, Shahreza Branch, Islamic Azad University, P.O. Box 311-86145, Shahreza, Isfahan, Iran; Young Researchers and Elite Club, Shahreza Branch, Islamic Azad University, Shahreza, Iran
| | - Alireza Nezamzadeh-Ejhieh
- Department of Chemistry, Shahreza Branch, Islamic Azad University, P.O. Box 311-86145, Shahreza, Isfahan, Iran; Young Researchers and Elite Club, Shahreza Branch, Islamic Azad University, Shahreza, Iran; Razi Chemistry Research Center (RCRC), Shahreza Branch, Islamic Azad University, Isfahan, Iran.
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