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Avadaiappan A, Antony SJPS, Franci B, Mahalingam U, Ramasamy P, Conchalish H, Sath V. Environmental photochemistry with thiol- and silica-modified plasmonic nanocomposites: SERS sensing of municipal solid waste and tannery waste leachate from groundwater. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:90023-90033. [PMID: 35861900 DOI: 10.1007/s11356-022-22058-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/16/2022] [Accepted: 07/12/2022] [Indexed: 06/15/2023]
Abstract
Mismanagement of obsolete solid waste generates a massive deteriorating effect on the environment. There is a high level of open trash disposal contaminating its neighboring water bodies. This despoliation trash causes an endangerment to the living environment. The waste management act is to hinder harmful effects on human beings, animals, plants, and their natural environment through the principles of waste prevention, waste processing, and waste disposal. Surface-enhanced Raman scattering (SERS) enhances the hazardous chemical sensing of environmental pollutants. To vigorously focus on the leaching of a couple of landfills in groundwater and surface water, an unusual combination of SERS-based poly vinyl thiol and silica-modified silver nanocomposites (PVT/SiO2@Ag NCs) was synthesized. The optical, crystalline, and structural properties of PVT/SiO2@Ag NCs were described with UV-visible spectroscopy (UV-Vis), X-ray diffractometer (XRD), transmission electron microscope (TEM), and energy-dispersive X-ray analysis (EDX). The surface plasmon resonance (SPR) is detected at 403 nm from the PVT/SiO2@Ag NPs. The average crystallite size of PVT/SiO2 @ Ag NCs is estimated using the Scherrer formula as 11 nm. The calculated specific surface area (SSA), strains, and dislocation densities demonstrate the improved mechanical properties of the substrate. The well-separated spherical shape of NPs is also observed, and the composition of silica and sulfur element in addition of Ag was confirmed by EDAX. Negatively charged SiO2 were bound strongly with the SH group and Ag NPs through electrostatic interaction mechanism as S-Ag-O-Si-O-Ag-S. SERS sensitivity is demonstrated by the prepared nanoparticles using an environmentally ignored leachate of municipal solid waste (MSW) and tannery waste (TW) landfill. PVT/SiO2@Ag NCs has detected the presence of innards of MSW leachate viz., aromatic hydrocarbon, phenols, phthalates, and pesticide from the groundwater. Furthermore, the TW leachate compositions of benzenes, hydrocarbons, amines, and chromium VI were analytically identified. Also, the leaching of TW leachate was confirmed in the water samples referred. Hence, this study provides a novel SERS sensor of PVT/SiO2@Ag NCs in the tile to detect and analyze environmentally ignored organic and inorganic compounds.
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Affiliation(s)
- Aarthi Avadaiappan
- Department of Physics, Mother Teresa Women's University, Kodaikanal, 624102, India
| | | | - Bindhu Franci
- Department of Physics, Sree Devi Kumari Women's College, Kuzhithurai, 629163, India
| | - Umadevi Mahalingam
- Department of Physics, Mother Teresa Women's University, Kodaikanal, 624102, India.
| | | | | | - Vasant Sath
- UGC - DAE Consortium for Scientific Research, Indore, India
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Huang XJ, Mo WL, Ma YY, He XQ, Syls Y, Wei XY, Fan X, Yang XQ, Zhang SP. Pyrolysis Kinetic Analysis of Sequential Extract Residues from Hefeng Subbituminous Coal Based on the Coats-Redfern Method. ACS OMEGA 2022; 7:21397-21406. [PMID: 35785316 PMCID: PMC9245098 DOI: 10.1021/acsomega.2c00307] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/15/2022] [Accepted: 03/03/2022] [Indexed: 06/15/2023]
Abstract
Sequential extract residues (R i , i = 1, 2, 3, 4, and 5) were obtained from Hefeng acid-washing coal (HFAC) by petroleum ether, carbon disulfide, methanol, acetone, and isometric carbon disulfide/acetone mixture, sequentially. Pyrolysis behavior of the residues was determined using thermogravimetry analysis. The Coats-Redfern method with different reaction orders was used to analyze the pyrolysis kinetic of each sample, and the kinetic parameters, including correlation coefficient (R 2), activation energy (E), and pre-exponential factor (A), were calculated. Results showed that the weight loss of extract residues was higher than HFAC, and pyrolysis behavior varies greatly for residues, which is related to the unstable structure after extraction. From conversion-temperature (α-T) curves, the pyrolysis process was divided into three stages: low-temperature stage (150-350 °C), medium-temperature stage (350-550 °C), and high-temperature stage (550-950 °C). The medium-temperature stage made great contribution to the process of pyrolysis, which was dominated by depolymerization and decomposition reaction. The relationship between kinetic parameters and reaction order showed that the swelling effect is an important reason for the discrepancy of E for each sample in the process of pyrolysis.
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Affiliation(s)
- Xian-Jin Huang
- State
Key Laboratory of Chemistry and Utilization of Carbon-Based Energy
Resources and Key Laboratory of Coal Clean Conversion & Chemical
Engineering Process (Xinjiang Uyghur Autonomous Region), College of
Chemical Engineering, Xinjiang University, Urumqi, Xinjiang 830046, China
| | - Wen-Long Mo
- State
Key Laboratory of Chemistry and Utilization of Carbon-Based Energy
Resources and Key Laboratory of Coal Clean Conversion & Chemical
Engineering Process (Xinjiang Uyghur Autonomous Region), College of
Chemical Engineering, Xinjiang University, Urumqi, Xinjiang 830046, China
| | - Ya-Ya Ma
- State
Key Laboratory of Chemistry and Utilization of Carbon-Based Energy
Resources and Key Laboratory of Coal Clean Conversion & Chemical
Engineering Process (Xinjiang Uyghur Autonomous Region), College of
Chemical Engineering, Xinjiang University, Urumqi, Xinjiang 830046, China
| | - Xiao-Qiang He
- State
Key Laboratory of Chemistry and Utilization of Carbon-Based Energy
Resources and Key Laboratory of Coal Clean Conversion & Chemical
Engineering Process (Xinjiang Uyghur Autonomous Region), College of
Chemical Engineering, Xinjiang University, Urumqi, Xinjiang 830046, China
| | - Yelixiati Syls
- State
Key Laboratory of Chemistry and Utilization of Carbon-Based Energy
Resources and Key Laboratory of Coal Clean Conversion & Chemical
Engineering Process (Xinjiang Uyghur Autonomous Region), College of
Chemical Engineering, Xinjiang University, Urumqi, Xinjiang 830046, China
| | - Xian-Yong Wei
- State
Key Laboratory of Chemistry and Utilization of Carbon-Based Energy
Resources and Key Laboratory of Coal Clean Conversion & Chemical
Engineering Process (Xinjiang Uyghur Autonomous Region), College of
Chemical Engineering, Xinjiang University, Urumqi, Xinjiang 830046, China
- Key
Laboratory of Coal Processing and Efficient Utilization, Ministry
of Education, China University of Mining
& Technology, Xuzhou 221116, Jiangsu, China
| | - Xing Fan
- State
Key Laboratory of Chemistry and Utilization of Carbon-Based Energy
Resources and Key Laboratory of Coal Clean Conversion & Chemical
Engineering Process (Xinjiang Uyghur Autonomous Region), College of
Chemical Engineering, Xinjiang University, Urumqi, Xinjiang 830046, China
- College
of Chemical and Biological Engineering, Shandong University of Science and Technology, Qingdao, Shandong 266590, China
| | - Xiao-Qin Yang
- Xinjiang
Yihua Chemical Industry Co., Ltd., Changji 831700, China
| | - Shu-Pei Zhang
- Xinjiang
Yihua Chemical Industry Co., Ltd., Changji 831700, China
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Fu M, Yang W, Yang C, Zhang Y, Shen C. Mechanistic insights into CoOx–Ag/CeO2 catalysts for the aerobic oxidation of 5-hydroxymethylfurfural to 2,5-furandicarboxylic acid. Catal Sci Technol 2022. [DOI: 10.1039/d1cy01599k] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
CoOx–Ag/CeO2 catalysts achieve satisfactory FDCA yield from HMF, and a fundamental understanding about the reaction mechanism is provided.
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Affiliation(s)
- Mengchen Fu
- Beijing Key Laboratory of Bioprocess, College of Life Science and Technology, Beijing University of Chemical Technology, No. 15 of North Three-Ring East Road, Chaoyang District, Beijing 100029, P.R. China
| | - Weiyao Yang
- Beijing Key Laboratory of Bioprocess, College of Life Science and Technology, Beijing University of Chemical Technology, No. 15 of North Three-Ring East Road, Chaoyang District, Beijing 100029, P.R. China
| | - Chenyu Yang
- Beijing Key Laboratory of Bioprocess, College of Life Science and Technology, Beijing University of Chemical Technology, No. 15 of North Three-Ring East Road, Chaoyang District, Beijing 100029, P.R. China
| | - Yiwen Zhang
- Beijing Key Laboratory of Bioprocess, College of Life Science and Technology, Beijing University of Chemical Technology, No. 15 of North Three-Ring East Road, Chaoyang District, Beijing 100029, P.R. China
| | - Chun Shen
- Beijing Key Laboratory of Bioprocess, College of Life Science and Technology, Beijing University of Chemical Technology, No. 15 of North Three-Ring East Road, Chaoyang District, Beijing 100029, P.R. China
- The State Key Laboratory of Chemical Engineering, Department of Chemical Engineering, Tsinghua University, Beijing 100084, P.R. China
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Complex compounds of transition metals with hydroxyaromatic carboxylic acids as precursors for the synthesis of nanosized metal oxides. Russ Chem Bull 2020. [DOI: 10.1007/s11172-020-2851-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Qin C, Bai W, Liu P, Huang J, Guo H, Huang X, Dang X, Yan D. Enhanced plasma mineralization of adsorbed toluene by optimization the hybrid support of Ag–Mn catalysts. J IND ENG CHEM 2019. [DOI: 10.1016/j.jiec.2019.08.043] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Mamontov G, Gorbunova A, Vyshegorodtseva E, Zaikovskii V, Vodyankina O. Selective oxidation of CO in the presence of propylene over Ag/MCM-41 catalyst. Catal Today 2019. [DOI: 10.1016/j.cattod.2018.05.015] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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Abstract
Nowadays catalytic technologies are widely used to purify indoor and outdoor air from harmful compounds. Recently, Ag–CeO2 composites have found various applications in catalysis due to distinctive physical-chemical properties and relatively low costs as compared to those based on other noble metals. Currently, metal–support interaction is considered the key factor that determines high catalytic performance of silver–ceria composites. Despite thorough investigations, several questions remain debating. Among such issues, there are (1) morphology and size effects of both Ag and CeO2 particles, including their defective structure, (2) chemical and charge state of silver, (3) charge transfer between silver and ceria, (4) role of oxygen vacancies, (5) reducibility of support and the catalyst on the basis thereof. In this review, we consider recent advances and trends on the role of silver–ceria interactions in catalytic performance of Ag/CeO2 composites in low-temperature CO oxidation, soot oxidation, and volatile organic compounds (VOCs) abatement. Promising photo- and electrocatalytic applications of Ag/CeO2 composites are also discussed.
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Ostroushko AA, Adamova LV, Koveza EV, Russkikh OV, Kuznetsov MV. Effect of Silver Nanoparticles on the Sorption Characteristics of La1 − xAgxMnO3 ± y. RUSSIAN JOURNAL OF PHYSICAL CHEMISTRY A 2018. [DOI: 10.1134/s0036024418030214] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Grabchenko MV, Mamontov GV, Zaikovskii VI, Vodyankina OV. Effect of the metal−support interaction in Ag/CeO2 catalysts on their activity in ethanol oxidation. KINETICS AND CATALYSIS 2017. [DOI: 10.1134/s0023158417050056] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Rana PH, Parikh PA. Bioethanol selective oxidation to acetaldehyde over Ag–CeO2: role of metal–support interactions. NEW J CHEM 2017. [DOI: 10.1039/c6nj03853k] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Inserted Ag creates oxygen vacancy on the surface of CeO2, leading to enhanced catalytic activity.
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Affiliation(s)
- Paresh H. Rana
- Department of Chemical Engineering
- Government Engineering College
- Bhuj 370001
- India
| | - Parimal A. Parikh
- Department of Chemical Engineering
- S.V. National Institute of Technology
- Surat
- India
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Dutov V, Mamontov G, Zaikovskii V, Vodyankina O. The effect of support pretreatment on activity of Ag/SiO 2 catalysts in low-temperature CO oxidation. Catal Today 2016. [DOI: 10.1016/j.cattod.2016.05.033] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Qin C, Huang X, Dang X, Huang J, Teng J, Kang Z. Toluene removal by sequential adsorption-plasma catalytic process: Effects of Ag and Mn impregnation sequence on Ag-Mn/γ-Al2O3. CHEMOSPHERE 2016; 162:125-130. [PMID: 27494312 DOI: 10.1016/j.chemosphere.2016.07.085] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/12/2016] [Revised: 06/22/2016] [Accepted: 07/26/2016] [Indexed: 06/06/2023]
Abstract
A series of Ag-Mn/γ-Al2O3 were prepared under different Ag/Mn impregnation sequence and tested in the sequential adsorption-plasma catalytic removal of toluene. When Mn was impregnated first, the resulting catalyst, Ag-Mn(F)/γ-Al2O3, had longer breakthrough time, gave less emission of toluene, had higher CO2 selectivity, and had better carbon balance and COx yield compared to catalysts prepared via other impregnation sequences. After 120 min of NTP treatment, the carbon balance of Ag-Mn(F)/γ-Al2O3 was 91%, with 87% as COx contributions. A Brunauer-Emmett-Teller (BET) analysis and X-ray photoelectron spectroscopy (XPS) results show that, the impregnation sequence impacts the BET surface area and the ratio and existing state of Ag on the surface of the catalysts. The longer breakthrough time when using Ag-Mn(F)/γ-Al2O3 as catalyst is attributed to the large amount of Ag(+) on the surface. Ag(+) is a new active site for toluene adsorption. When Ag was impregnated first (Ag(F)-Mn/γ-Al2O3) or Ag and Mn co-impregnated (Ag-Mn-C/γ-Al2O3), the predominant specie was Ag(+). Both Ag(0) and Ag(+) species were detected on Ag-Mn(F)/γ-Al2O3. Ag(0) cooperation with MnOx may promote the migration of surface active oxygen. This would facilitate the oxidation of adsorbed toluene with CC bond already weakened by Ag(+) and would result in higher CO2 selectivity and better carbon balance as seen in the Ag-Mn(F)/γ-Al2O3 system.
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Affiliation(s)
- Caihong Qin
- School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, No. 13 Yanta Road, Xi'an, Shaanxi 710055, PR China
| | - Xuemin Huang
- School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, No. 13 Yanta Road, Xi'an, Shaanxi 710055, PR China
| | - Xiaoqing Dang
- School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, No. 13 Yanta Road, Xi'an, Shaanxi 710055, PR China.
| | - Jiayu Huang
- Research Center of Air Pollution Control Technology, Chinese Research Academy of Environmental Science, Beijing, 100012, PR China
| | - Jingjing Teng
- School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, No. 13 Yanta Road, Xi'an, Shaanxi 710055, PR China
| | - Zhongli Kang
- School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, No. 13 Yanta Road, Xi'an, Shaanxi 710055, PR China
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Bondarchuk IS, Mamontov GV. Role of PdAg interface in Pd-Ag/SiO2 bimetallic catalysts in low-temperature oxidation of carbon monoxide. KINETICS AND CATALYSIS 2015. [DOI: 10.1134/s0023158415030027] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Trinh QH, Lee SB, Mok YS. Removal of ethylene from air stream by adsorption and plasma-catalytic oxidation using silver-based bimetallic catalysts supported on zeolite. JOURNAL OF HAZARDOUS MATERIALS 2015; 285:525-34. [PMID: 25576654 DOI: 10.1016/j.jhazmat.2014.12.019] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/18/2014] [Revised: 11/14/2014] [Accepted: 12/09/2014] [Indexed: 05/20/2023]
Abstract
Dynamic adsorption of ethylene on 13X zeolite-supported Ag and Ag-M(x)O(y) (M: Co, Cu, Mn, and Fe), and plasma-catalytic oxidation of the adsorbed ethylene were investigated. The experimental results showed that the incorporation of Ag into zeolite afforded a marked enhancement in the adsorptivity for ethylene. The addition of transition metal oxides was found to have a positive influence on the ethylene adsorption, except Fe(x)O(y). The presence of the additional metal oxides, however, appeared to somewhat interrupt the diffusion of ozone into the zeolite micro-pores, leading to a decrease in the plasma-catalytic oxidation efficiency of the ethylene adsorbed there. Among the second additional metal oxides, Fe(x)O(y) was able to reduce the emission of ozone during the plasma-catalytic oxidation stage while keeping a high effectiveness for the oxidative removal of the adsorbed ethylene. The periodical treatment consisting of adsorption followed by plasma-catalytic oxidation may be a promising energy-efficient ethylene abatement method.
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Affiliation(s)
- Quang Hung Trinh
- Department of Chemical and Biological Engineering, Jeju National University, Jeju 690-756, South Korea
| | - Sang Baek Lee
- Department of Chemical and Biological Engineering, Jeju National University, Jeju 690-756, South Korea
| | - Young Sun Mok
- Department of Chemical and Biological Engineering, Jeju National University, Jeju 690-756, South Korea.
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