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Wan Z, Zhang H, Niu M, Guo Y, Li H. Production of vanillin via oxidation depolymerization of lignin over Fe- and Mn-modified TS-1 zeolites. Int J Biol Macromol 2024; 272:132922. [PMID: 38844292 DOI: 10.1016/j.ijbiomac.2024.132922] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2024] [Revised: 05/10/2024] [Accepted: 06/03/2024] [Indexed: 06/16/2024]
Abstract
Converting lignin into specific aromatic chemicals for utilization through depolymerization of lignin is an effective way to achieve high-value applications. There are many depolymerization methods that can do this, but there are problems such as harsh reaction conditions, low depolymerization efficiency and uncontrollable target products that need to be solved. This study reports a novel system for the oxidative depolymerization of alkali lignin using Fe- and Mn- modified TS-1 as a catalyst to assist in the highly selective production of vanillin. We also proposed a possible reaction pathway for the oxidative depolymerization of alkali lignin to produce vanillin catalyzed by Fe-Mn/TS-1 catalyst. The catalytic effects of TS-1, Fe/TS-1, and Fe-Mn/TS-1 catalysts on the oxidative depolymerization of lignin to produce phenolic monomers and vanillin were investigated. The results show that the modified catalysts can effectively improve the efficiency of linkage bond breaking in lignin, especially the β-O-4 bond, in which the inter-band transitions of Fe and Mn play an important role. The synergistic effect of the bimetallic-loaded catalyst (Fe-Mn/TS-1) could catalyze the oxidative depolymerization of lignin more efficiently than the monometallic-loaded catalyst (Fe/TS-1). This lignin oxidative depolymerization system produced 40.59 wt% bio-oil including 12.24 wt% phenolic monomers and 16.17 wt% re-lignin after the addition of Fe-Mn/TS-1 catalyst, owning the highest phenolic monomer yield. Surprisingly, this lignin oxidative depolymerization system exhibited high yield for vanillin (8.36 wt%) production. These results demonstrated that the Fe-Mn/TS-1 catalytic system has potential to produce vanillin from lignin under mild conditions.
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Affiliation(s)
- Zhouyuanye Wan
- Liaoning Key Lab of Lignocellulose Chemistry and BioMaterials, Liaoning Collaborative Innovation Center for Lignocellulosic Biorefinery, College of Light Industry and Chemical Engineering, Dalian Polytechnic University, Dalian 116034, China
| | - Hongjie Zhang
- China National Pulp and Paper Research Institute Co. Ltd., Beijing 100102, China
| | - Meihong Niu
- Liaoning Key Lab of Lignocellulose Chemistry and BioMaterials, Liaoning Collaborative Innovation Center for Lignocellulosic Biorefinery, College of Light Industry and Chemical Engineering, Dalian Polytechnic University, Dalian 116034, China
| | - Yanzhu Guo
- Liaoning Key Lab of Lignocellulose Chemistry and BioMaterials, Liaoning Collaborative Innovation Center for Lignocellulosic Biorefinery, College of Light Industry and Chemical Engineering, Dalian Polytechnic University, Dalian 116034, China.
| | - Haiming Li
- Liaoning Key Lab of Lignocellulose Chemistry and BioMaterials, Liaoning Collaborative Innovation Center for Lignocellulosic Biorefinery, College of Light Industry and Chemical Engineering, Dalian Polytechnic University, Dalian 116034, China.
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Alharbi KH, Alharbi W, Alhayyani S, Roselin LS, Selvin R. Enhanced Oxidation of p-Toluidine Using Supported Zeolite Nanoparticles. Molecules 2023; 28:5737. [PMID: 37570707 PMCID: PMC10420039 DOI: 10.3390/molecules28155737] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2023] [Revised: 07/26/2023] [Accepted: 07/26/2023] [Indexed: 08/13/2023] Open
Abstract
Supported nanomaterials are becoming increasingly important in many industrial processes because of the need to improve both the efficiency and environmental acceptability of industrial processes. The unique properties of supported nanomaterials have attracted researchers to develop efficient catalytic materials in nanoscale. The extremely small size of the particles maximizes the surface area exposed to the reactant, allowing more reactions to occur. The environmental hazards resulting from the conventional manufacturing procedures for organic fine chemicals and intermediates by classical oxidation catalysis using mineral acids have forced chemical industries to seek less polluting processes. The present study aimed to oxidize p-toluidine by hydrogen peroxide in the presence of magnetite supported on nanocrystalline titanium silicalite-1 (M/NTS) zeolite at ambient temperature. The products detected are 4,4'-dimethylazobenzene as major product and 4,4'-dimethylazoxybenzene as minor product. Good selectivity, low cost, low wastage of materials and enhanced environmental friendliness of heterogeneous magnetite nanoparticle supported zeolite catalysts were observed. The effect of various reaction parameters such as mole ratio, catalyst weight and reusability of catalyst were studied. At the optimum reaction conditions, the oxidation activity of M/NTS catalyst was compared with M/NS catalyst, and it was found that titanium in the framework of M/NTS provided higher activity and selectivity.
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Affiliation(s)
- Khadijah H. Alharbi
- Department of Chemistry, Science and Arts College, King Abdulaziz University, Rabigh 21911, Saudi Arabia; (W.A.); (S.A.); (L.S.R.)
| | - Walaa Alharbi
- Department of Chemistry, Science and Arts College, King Abdulaziz University, Rabigh 21911, Saudi Arabia; (W.A.); (S.A.); (L.S.R.)
| | - Sultan Alhayyani
- Department of Chemistry, Science and Arts College, King Abdulaziz University, Rabigh 21911, Saudi Arabia; (W.A.); (S.A.); (L.S.R.)
| | - L. Selva Roselin
- Department of Chemistry, Science and Arts College, King Abdulaziz University, Rabigh 21911, Saudi Arabia; (W.A.); (S.A.); (L.S.R.)
| | - Rosilda Selvin
- Department of Basic Sciences and Humanities, Don Bosco Institute of Technology, Kurla (W), Mumbai 400 070, India;
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3
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Wu Q, Siddique MS, Wang H, Cui L, Wang H, Pan M, Yan J. Visible-light-driven iron-based heterogeneous photo-Fenton catalysts for wastewater decontamination: A review of recent advances. CHEMOSPHERE 2023; 313:137509. [PMID: 36495983 DOI: 10.1016/j.chemosphere.2022.137509] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/16/2022] [Revised: 11/23/2022] [Accepted: 12/06/2022] [Indexed: 06/17/2023]
Abstract
Visible-light-driven heterogeneous photo-Fenton process has emerged as the most promising Fenton-derived technology for wastewater decontamination, owing to its prominent superiorities including the potential utilization of clean energy (solar light), and acceleration of ≡Fe(II)/≡Fe(III) dynamic cycle. As the core constituent, catalysts play a pivotal role in the photocatalytic activation of H2O2 to yield reactive oxidative species (ROS). To date, all types of iron-based heterogeneous photo-Fenton catalysts (Fe-HPFCs) have been extensively reported by the scientific community, and exhibited satisfactory catalytic performance towards pollutants decomposition, sometimes even exceeding the homogeneous counterparts (Fe(II)/H2O2). However, the relevant reviews on Fe-HPFCs, especially from the viewpoint of catalyst-self design are extremely limited. Therefore, this state-of-the-art review focuses on the available Fe-HPFCs in literatures, and gives their classification based on their self-characteristics and modification strategies for the first time. Two classes of representative Fe-HPFCs, conventional inorganic semiconductors of Fe-containing minerals and newly emerging Fe-based metal-organic frameworks (Fe-MOFs) are comprehensively summarized. Moreover, three universal strategies including (i) transition metal (TMs) doping, (ii) construction of heterojunctions with other semiconductors or plasmonic materials, and (iii) combination with supporters were proposed to tackle their inherent defects, viz., inferior light-harvesting capacity, fast recombination of photogenerated carriers, slow mass transfer and low exposure and uneven dispersion of active sites. Lastly, a critical emphasis was also made on the challenges and prospects of Fe-HPFCs in wastewater treatment, providing valuable guidance to researchers for the reasonable construction of high-performance Fe-HPFCs.
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Affiliation(s)
- Qiangshun Wu
- School of Environmental Science and Engineering, Yancheng Institute of Technology, Yancheng, 224051, China.
| | - Muhammad Saboor Siddique
- Key Laboratory of Drinking Water Science and Technology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100086, China; University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Huijuan Wang
- School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang, 212013, China
| | - Liqiang Cui
- School of Environmental Science and Engineering, Yancheng Institute of Technology, Yancheng, 224051, China
| | - Hui Wang
- School of Environmental Science and Engineering, Yancheng Institute of Technology, Yancheng, 224051, China
| | - Mei Pan
- School of Environmental Science and Engineering, Yancheng Institute of Technology, Yancheng, 224051, China
| | - Jinlong Yan
- School of Environmental Science and Engineering, Yancheng Institute of Technology, Yancheng, 224051, China.
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4
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Cu-MOF for effectively organic pollutants degradation and E. coli inactivation via catalytic activation of peroxymonosulfate. J Taiwan Inst Chem Eng 2022. [DOI: 10.1016/j.jtice.2021.11.021] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
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5
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Application of pillared raw clay-base catalysts and natural solar radiation for water decontamination by the photo-Fenton process. Sep Purif Technol 2021. [DOI: 10.1016/j.seppur.2020.118167] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Wu Q, Siddique MS, Yu W. Iron-nickel bimetallic metal-organic frameworks as bifunctional Fenton-like catalysts for enhanced adsorption and degradation of organic contaminants under visible light: Kinetics and mechanistic studies. JOURNAL OF HAZARDOUS MATERIALS 2021; 401:123261. [PMID: 32629344 DOI: 10.1016/j.jhazmat.2020.123261] [Citation(s) in RCA: 56] [Impact Index Per Article: 18.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/26/2020] [Revised: 06/17/2020] [Accepted: 06/18/2020] [Indexed: 06/11/2023]
Abstract
Iron-nickel bimetallic organic frameworks (FeNiX-BDC, H2BDC: terephthalic acid) were developed as bifunctional materials for adsorption and photo-Fenton degradation of organic dyes with different charge properties. Significantly enhanced adsorption capacity of FeNi1/15-BDC towards methylene blue (MB) and methyl orange (MO) was achieved, 5.3 and 2.6 times higher than that of pristine Fe-BDC, which was attributed to enlarged specific surface area and pore volume and the decreased surface charges induced by Ni doping. The adsorption kinetics demonstrated that chemisorption was dominant and intra-particle diffusion was the rate-controlling step. Two-stage degradation including slow induction stage and rapid oxidation stage fitted with pseudo-zero-order kinetics well. The increased rate constants (2.472 vs. 1.188 min-1 for MB; 0.616 vs. 0.421 min-1 for MO) in the induction stage as well as the superior removal capability by asynchronism relative to synchronism jointly corroborating the improved adsorption performance was favor for subsequent degradation. Notably, this heterogeneous system not only exhibited obvious advantages like wider pH working range (3-9), better stability and reusability of catalysts, but also achieved the dual objectives of in-situ decontamination and adsorbent regeneration. The coupling of adsorption and degradation along with synergism between photocatalysis and Fenton-like process are responsible for the reinforced removal of organic contaminants.
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Affiliation(s)
- Qiangshun Wu
- Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes of Ministry of Education, College of Environment, Hohai University, Nanjing, 210098, China; Key Laboratory of Drinking Water Science and Technology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100086, China
| | - Muhammad Saboor Siddique
- Key Laboratory of Drinking Water Science and Technology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100086, China; University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Wenzheng Yu
- Key Laboratory of Drinking Water Science and Technology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100086, China; Department of Civil and Environmental Engineering, Imperial College London, South Kensington Campus, London, SW7 2AZ, UK.
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Mishra B, Varjani S, Pradhan I, Ekambaram N, Teixeira JA, Ngo HH, Guo W. Insights into Interdisciplinary Approaches for Bioremediation of Organic Pollutants: Innovations, Challenges and Perspectives. ACTA ACUST UNITED AC 2020. [DOI: 10.1007/s40011-020-01187-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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8
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Agrawal S, Nirwan N, Chohadia A. Degradation of acriflavine using environmentally benign process involving singlet-oxygen-photo-Fenton: A comparative study. J Photochem Photobiol A Chem 2020. [DOI: 10.1016/j.jphotochem.2020.112547] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Ren Y, Shi M, Zhang W, Dionysiou DD, Lu J, Shan C, Zhang Y, Lv L, Pan B. Enhancing the Fenton-like Catalytic Activity of nFe 2O 3 by MIL-53(Cu) Support: A Mechanistic Investigation. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2020; 54:5258-5267. [PMID: 32186173 DOI: 10.1021/acs.est.0c00203] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
A novel Fenton-like catalyst was synthesized by immobilizing nano-Fe2O3 (nFe2O3) on MIL-53(Cu). The pseudo-first-order rate constant of bisphenol A degradation in the nFe2O3/MIL-53(Cu)/H2O2 system reached 0.0123 min-1, while the values in MIL-53(Cu)/H2O2 and nFe2O3/H2O2 systems were only 0.0026 and 0.0040 min-1, respectively. The characterization of nFe2O3/MIL-53(Cu) reveals that the supreme catalytic activity of this material could be ascribed to iron-copper synergy, smaller size, and better dispersion of nFe2O3 particles. Moreover, a method of trapping Cu(I) by neocuproine was developed, which could shield Cu(I) from interacting with iron and H2O2, and thus allow quantitative differentiation of the contribution to the enhanced catalytic activity by each of the factors. Using this method, 19% of the enhancement was determined to be contributed by synergistic effect, while 24% of the enhancement was due to the smaller size and better dispersion of the nFe2O3 particles on MIL-53(Cu) support. In addition, the performance of nFe2O3/MIL-53(Cu) only dropped 10.7% after five treatment cycles in real wastewater, showing good potential in practical application. We believe this study sheds light on the tailored design of Fenton-like catalysts and elucidates the catalytic mechanisms of supported bimetallic catalysts.
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Affiliation(s)
- Yi Ren
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing 210023, China
| | - Mengqi Shi
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing 210023, China
| | - Weiming Zhang
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing 210023, China
- Research Center for Environmental Nanotechnology (ReCENT), Nanjing University, Nanjing 210023, China
| | - Dionysios D Dionysiou
- Environmental Engineering and Science Program, Department of Chemical and Environmental Engineering, University of Cincinnati, Cincinnati, Ohio 45221-0012, United States
| | - Junhe Lu
- Department of Environmental Science and Engineering, Nanjing Agricultural University, Nanjing 210095, China
| | - Chao Shan
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing 210023, China
- Research Center for Environmental Nanotechnology (ReCENT), Nanjing University, Nanjing 210023, China
| | - Yanyang Zhang
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing 210023, China
- Research Center for Environmental Nanotechnology (ReCENT), Nanjing University, Nanjing 210023, China
| | - Lu Lv
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing 210023, China
- Research Center for Environmental Nanotechnology (ReCENT), Nanjing University, Nanjing 210023, China
| | - Bingcai Pan
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing 210023, China
- Research Center for Environmental Nanotechnology (ReCENT), Nanjing University, Nanjing 210023, China
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10
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Yang J, Zhu H, Peng Y, Li P, Chen S, Yang B, Zhang J. Photocatalytic Performance and Degradation Pathway of Rhodamine B with TS-1/C 3N 4 Composite under Visible Light. NANOMATERIALS (BASEL, SWITZERLAND) 2020; 10:E756. [PMID: 32326608 PMCID: PMC7221997 DOI: 10.3390/nano10040756] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/08/2020] [Revised: 04/08/2020] [Accepted: 04/13/2020] [Indexed: 11/16/2022]
Abstract
TS-1/C3N4 composites were prepared by calcining the precursors with cooling crystallization method and were characterized by scanning electron microscopy (SEM), transmission electron microscopy (TEM), Fourier transform infrared spectroscopy (FTIR), X-ray diffraction analysis (XRD), UV-Vis diffuse reflection spectrum (DRS) and nitrogen adsorption-desorption isotherm. The photocatalytic performance of TS-1/C3N4 composites was investigated to degrade Rhodamine B (RhB) under visible light irradiation. The results showed that all composites exhibited better photocatalytic performance than pristine TS-1 and C3N4; TS-1/C3N4-B composite (the measured mass ratio of TS-1 to C3N4 is 1:4) had best performance, with a rate constant of 0.04166 min-1, which is about two and ten times higher than those of C3N4 and TS-1, respectively. We attributed the enhanced photocatalytic performance of TC-B to the optimized heterostructure formed by TS-1 and C3N4 with proper proportion. From the results of photoluminescence spectra (PL) and the enhanced photocurrent, it is concluded that photogenerated electrons and holes were separated more effectively in TS-1/C3N4 composites. The contribution of the three main active species for photocatalytic degradation followed a decreasing order of ·O2-, ·OH and h+. The degradation products of RhB were identified by liquid chromatography tandem mass spectrometry (LC-MS/MS), and the possible photocatalytic degradation pathways were proposed.
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Affiliation(s)
- Jingjing Yang
- Department of Environment and Quality Test, Chongqing Chemical Industry Vocational College, Chongqing 401228, China; (J.Y.); (P.L.); (S.C.)
| | - Hongqing Zhu
- College of Resources and Environment, Southwest University, Chongqing 400715, China;
| | - Yuan Peng
- College of Materials Science and Engineering, Yangtze Normal University, Chongqing 408100, China;
| | - Pengxi Li
- Department of Environment and Quality Test, Chongqing Chemical Industry Vocational College, Chongqing 401228, China; (J.Y.); (P.L.); (S.C.)
| | - Shuyan Chen
- Department of Environment and Quality Test, Chongqing Chemical Industry Vocational College, Chongqing 401228, China; (J.Y.); (P.L.); (S.C.)
| | - Bing Yang
- Department of Environment and Quality Test, Chongqing Chemical Industry Vocational College, Chongqing 401228, China; (J.Y.); (P.L.); (S.C.)
| | - Jinzhong Zhang
- College of Resources and Environment, Southwest University, Chongqing 400715, China;
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11
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Larralde AL, Onna D, Fuentes KM, Sileo EE, Hojamberdiev M, Aldabe Bilmes S. Heterogeneous photo-Fenton process mediated by Sn-substituted goethites with altered OH-surface density. J Photochem Photobiol A Chem 2019. [DOI: 10.1016/j.jphotochem.2019.111856] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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12
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Rojas-Mantilla HD, Ayala-Durán SC, Pupo Nogueira RF. Parameters affecting LED photoreactor efficiency in a heterogeneous photo-Fenton process using iron mining residue as catalyst. JOURNAL OF ENVIRONMENTAL SCIENCE AND HEALTH. PART A, TOXIC/HAZARDOUS SUBSTANCES & ENVIRONMENTAL ENGINEERING 2019; 54:1277-1286. [PMID: 31318311 DOI: 10.1080/10934529.2019.1640579] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/08/2019] [Revised: 06/21/2019] [Accepted: 06/25/2019] [Indexed: 06/10/2023]
Abstract
In this article, a light-emitting diode (LED)-based photoreactor was designed and evaluated for degradation of the antibiotic sulfathiazole (STZ), using heterogeneous photo-Fenton process with an iron ore residue as catalyst. The effects of the type of magnetic stirrer bar, use of baffles, rotation speed, and type and intensity of irradiation source were evaluated. The results showed that the degradation of STZ was strongly influenced by rotation speed (1100 rpm) and that the use of an octagonal stirrer bar favoured high dispersion and greater contact of the catalyst with the reaction medium. Although the presence of baffles had little influence on STZ degradation, their use enabled good dispersion of the catalyst (due to axial flow) and eliminated the vortex formed at high stirring speeds. It was found that the iron mining residue could be activated by UV LEDs, visible light LEDs, and black light irradiation, with similar degradation efficiencies achieved. Using the LEDs, STZ concentrations below the detection limit were obtained after 40 min, with power consumption 38-fold (UV LEDs) and 22-fold (visible light LEDs) lower than required for black light irradiation. The results demonstrated the advantages of the use of LED devices as irradiation systems in heterogeneous photo-Fenton processes.
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Affiliation(s)
- Hernán Dario Rojas-Mantilla
- Department of Analytical Chemistry, Institute of Chemistry, São Paulo State University (UNESP) , Araraquara , Brazil
- National Institute for Alternative Technologies of Detection, Toxicological Evaluation and Removal of Micropollutants and Radioactives (INCT-DATREM) , Araraquara , Brazil
| | - Saidy Cristina Ayala-Durán
- Department of Analytical Chemistry, Institute of Chemistry, São Paulo State University (UNESP) , Araraquara , Brazil
- National Institute for Alternative Technologies of Detection, Toxicological Evaluation and Removal of Micropollutants and Radioactives (INCT-DATREM) , Araraquara , Brazil
| | - Raquel Fernandes Pupo Nogueira
- Department of Analytical Chemistry, Institute of Chemistry, São Paulo State University (UNESP) , Araraquara , Brazil
- National Institute for Alternative Technologies of Detection, Toxicological Evaluation and Removal of Micropollutants and Radioactives (INCT-DATREM) , Araraquara , Brazil
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13
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Xue Y, Zuo G, Wen Y, Wei H, Liu M, Wang X, Li B. Seed-assisted synthesis of TS-1 crystals containing Al with high catalytic performances in cyclohexanone ammoximation. RSC Adv 2019; 9:2386-2394. [PMID: 35520480 PMCID: PMC9059887 DOI: 10.1039/c8ra10104c] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2018] [Accepted: 12/26/2018] [Indexed: 01/07/2023] Open
Abstract
In this study, titanium silicalite (TS-1) crystals containing Al were synthesized using aluminosilicate MFI zeolites as seeds in a tetrapropylammonium bromide (TPAB)–ethanolamine (EA) system. The TS-1 containing Al possessed large size, large Lb value and higher catalytic activity in cyclohexanone ammoximation. Larger Lb value would endow the TS-1 crystals with better mechanical strength and erosion resistance. The introduction of an Al atom into the TS-1 crystals resulted in the production of more acid sites and a bit strong Brönsted acid sites; these acid sites were more favorable to the catalytic performances in cyclohexanone ammoximation. Using aluminosilicate zeolites seeds, Al atoms are introduced into the TS-1 crystals, resulting in high Lbvalue and more acid sites, which improve the catalytic activity in cyclohexanone ammoximation.![]()
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Affiliation(s)
- Yan Xue
- Biological and Chemical Engineering College
- Nanyang Institute of Technology
- Nanyang 473004
- China
| | - Guangling Zuo
- Biological and Chemical Engineering College
- Nanyang Institute of Technology
- Nanyang 473004
- China
| | - Yiqiang Wen
- Institute of Industrial Catalysis
- School of Chemistry and Molecular Engineering
- Zhengzhou University
- Zhengzhou 450001
- China
| | - Huijuan Wei
- Institute of Industrial Catalysis
- School of Chemistry and Molecular Engineering
- Zhengzhou University
- Zhengzhou 450001
- China
| | - Meng Liu
- Institute of Industrial Catalysis
- School of Chemistry and Molecular Engineering
- Zhengzhou University
- Zhengzhou 450001
- China
| | - Xiangyu Wang
- Institute of Industrial Catalysis
- School of Chemistry and Molecular Engineering
- Zhengzhou University
- Zhengzhou 450001
- China
| | - Baojun Li
- Institute of Industrial Catalysis
- School of Chemistry and Molecular Engineering
- Zhengzhou University
- Zhengzhou 450001
- China
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