1
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D'Andria M, Krumeich F, Yao Z, Wang FR, Güntner AT. Structure-Function Relationship of Highly Reactive CuO x Clusters on Co 3 O 4 for Selective Formaldehyde Sensing at Low Temperatures. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2024; 11:e2308224. [PMID: 38143268 PMCID: PMC10933674 DOI: 10.1002/advs.202308224] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/30/2023] [Revised: 12/08/2023] [Indexed: 12/26/2023]
Abstract
Designing reactive surface clusters at the nanoscale on metal-oxide supports enables selective molecular interactions in low-temperature catalysis and chemical sensing. Yet, finding effective material combinations and identifying the reactive site remains challenging and an obstacle for rational catalyst/sensor design. Here, the low-temperature oxidation of formaldehyde with CuOx clusters on Co3 O4 nanoparticles is demonstrated yielding an excellent sensor for this critical air pollutant. When fabricated by flame-aerosol technology, such CuOx clusters are finely dispersed, while some Cu ions are incorporated into the Co3 O4 lattice enhancing thermal stability. Importantly, infrared spectroscopy of adsorbed CO, near edge X-ray absorption fine structure spectroscopy and temperature-programmed reduction in H2 identified Cu+ and Cu2+ species in these clusters as active sites. Remarkably, the Cu+ surface concentration correlated with the apparent activation energy of formaldehyde oxidation (Spearman's coefficient ρ = 0.89) and sensor response (0.96), rendering it a performance descriptor. At optimal composition, such sensors detected even the lowest formaldehyde levels of 3 parts-per-billion (ppb) at 75°C, superior to state-of-the-art sensors. Also, selectivity to other aldehydes, ketones, alcohols, and inorganic compounds, robustness to humidity and stable performance over 4 weeks are achieved, rendering such sensors promising as gas detectors in health monitoring, air and food quality control.
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Affiliation(s)
- Matteo D'Andria
- Human‐centered Sensing Laboratory, Department of Mechanical and Process Engineering, ETH ZurichZurichCH‐8092Switzerland
| | - Frank Krumeich
- Department of Chemistry and Applied BiosciencesLaboratory of Inorganic Chemistry, ETH ZurichZurichCH‐8093Switzerland
| | - Zhangyi Yao
- Department of Chemical EngineeringUniversity College LondonLondonWC1E 7JEUK
| | - Feng Ryan Wang
- Department of Chemical EngineeringUniversity College LondonLondonWC1E 7JEUK
| | - Andreas T. Güntner
- Human‐centered Sensing Laboratory, Department of Mechanical and Process Engineering, ETH ZurichZurichCH‐8092Switzerland
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2
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Li B, Duan X, Zhao T, Niu B, Li G, Zhao Z, Yang Z, Liu D, Zhang F, Cheng J, Hao Z. Boosting N 2O Catalytic Decomposition by the Synergistic Effect of Multiple Elements in Cobalt-Based High-Entropy Oxides. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2024; 58:2153-2161. [PMID: 38244211 DOI: 10.1021/acs.est.3c09741] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/22/2024]
Abstract
Nitrous oxide (N2O) has a detrimental impact on the greenhouse effect, and its efficient catalytic decomposition at low temperatures remains challenging. Herein, the cobalt-based high-entropy oxide with a spinel-type structure (Co-HEO) is successfully fabricated via a facile coprecipitation method for N2O catalytic decomposition. The obtained Co-HEO catalyst displays more remarkable catalytic performance and higher thermal stability compared with single and binary Co-based oxides, as the temperature of 90% N2O decomposition (T90) is 356 °C. A series of characterization results reveal that the synergistic effect of multiple elements enhances the reducibility and augments oxygen vacancy in the high-entropy system, thus boosting the activity of the Co-HEO catalyst. Moreover, density functional theory (DFT) calculations and the temperature-programmed surface reaction (TPSR) with isotope labeling demonstrate that N2O decomposition on the Co-HEO catalyst follows the Langmuir-Hinshelwood (L-H) mechanism with the promotion of abundant oxygen vacancies. This work provides a fundamental understanding of the synergistic catalytic effect in N2O decomposition and paves the way for the novel environmental catalytic applications of HEO.
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Affiliation(s)
- Bingzhi Li
- National Engineering Laboratory for VOCs Pollution Control Material & Technology, Research Center for Environmental Material and Pollution Control Technology, University of Chinese Academy of Sciences, Beijing 101408, P.R. China
| | - Xiaoxiao Duan
- National Engineering Laboratory for VOCs Pollution Control Material & Technology, Research Center for Environmental Material and Pollution Control Technology, University of Chinese Academy of Sciences, Beijing 101408, P.R. China
| | - Ting Zhao
- National Engineering Laboratory for VOCs Pollution Control Material & Technology, Research Center for Environmental Material and Pollution Control Technology, University of Chinese Academy of Sciences, Beijing 101408, P.R. China
| | - Ben Niu
- National Engineering Laboratory for VOCs Pollution Control Material & Technology, Research Center for Environmental Material and Pollution Control Technology, University of Chinese Academy of Sciences, Beijing 101408, P.R. China
| | - Ganggang Li
- National Engineering Laboratory for VOCs Pollution Control Material & Technology, Research Center for Environmental Material and Pollution Control Technology, University of Chinese Academy of Sciences, Beijing 101408, P.R. China
| | - Zeyu Zhao
- National Engineering Laboratory for VOCs Pollution Control Material & Technology, Research Center for Environmental Material and Pollution Control Technology, University of Chinese Academy of Sciences, Beijing 101408, P.R. China
| | - Zhenwen Yang
- National Engineering Laboratory for VOCs Pollution Control Material & Technology, Research Center for Environmental Material and Pollution Control Technology, University of Chinese Academy of Sciences, Beijing 101408, P.R. China
| | - Dongmei Liu
- National Engineering Laboratory for VOCs Pollution Control Material & Technology, Research Center for Environmental Material and Pollution Control Technology, University of Chinese Academy of Sciences, Beijing 101408, P.R. China
| | - Fenglian Zhang
- National Engineering Laboratory for VOCs Pollution Control Material & Technology, Research Center for Environmental Material and Pollution Control Technology, University of Chinese Academy of Sciences, Beijing 101408, P.R. China
| | - Jie Cheng
- National Engineering Laboratory for VOCs Pollution Control Material & Technology, Research Center for Environmental Material and Pollution Control Technology, University of Chinese Academy of Sciences, Beijing 101408, P.R. China
| | - Zhengping Hao
- National Engineering Laboratory for VOCs Pollution Control Material & Technology, Research Center for Environmental Material and Pollution Control Technology, University of Chinese Academy of Sciences, Beijing 101408, P.R. China
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3
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Lei S, Li Q, Luo Y, Zhao Z, Cheng M, Deng Y, Li H, Xu L. Efficient electrocatalyst for solar-driven electrolytic water splitting: Phosphorus (P) and niobium (Nb) co-doped NiFe 2O 4 nanosheet. J Colloid Interface Sci 2023; 651:818-828. [PMID: 37572617 DOI: 10.1016/j.jcis.2023.07.204] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2023] [Revised: 07/27/2023] [Accepted: 07/31/2023] [Indexed: 08/14/2023]
Abstract
In the context of hydrogen production through water electrolysis, the development of efficient and stable electrocatalysts is of paramount importance. However, the creation of cost-effective electrocatalysts poses a significant challenge. In this study, a P and Nb co-doped NiFe2O4 nanosheet is designed and grown on Fe foam (referred to as P, Nb-NiFe2O4/FF). The P, Nb-NiFe2O4/FF exhibits a distinctive crystalline/amorphous heterostructure, and the co-doping of P and Nb in the material leads to the exposure of additional catalytic active sites, optimization of the electronic structure, and enhancement of charge conductivity. Additionally, the P, Nb-NiFe2O4/FF possesses a superhydrophilic surface for the enhancement of charge/mass transfer at interface and a superaerophobic surface, facilitating the efficient release of gas. The P, Nb-NiFe2O4/FF demonstrates remarkable oxygen evolution reaction (OER) and hydrogen evolution reaction (HER) activities, achieving overpotential as low as 247 mV and 127 mV, respectively, to attain the current density response of 100 mA cm-2. Based on the high bifunctional activities, the P, Nb-NiFe2O4/FF requires only a working voltage of 1.56 V to obtain the current density of 10 mA cm-2 in overall water splitting. Furthermore, the overall water splitting device of P, Nb-NiFe2O4/FF is integrated with a commercial solar cell to simulate a solar-powered water splitting system, resulting in as superior solar-to-hydrogen conversion efficiency of 15.11%.
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Affiliation(s)
- Sufen Lei
- Institute for Energy Research, School of Chemistry and Chemical Engineering, Jiangsu University, No. 301, Xuefu Road, Zhenjiang, Jiangsu Province 212013, PR China
| | - Qian Li
- Institute for Energy Research, School of Chemistry and Chemical Engineering, Jiangsu University, No. 301, Xuefu Road, Zhenjiang, Jiangsu Province 212013, PR China
| | - Yuanning Luo
- Institute for Energy Research, School of Chemistry and Chemical Engineering, Jiangsu University, No. 301, Xuefu Road, Zhenjiang, Jiangsu Province 212013, PR China
| | - Zhenxiao Zhao
- Institute for Energy Research, School of Chemistry and Chemical Engineering, Jiangsu University, No. 301, Xuefu Road, Zhenjiang, Jiangsu Province 212013, PR China
| | - Ming Cheng
- Institute for Energy Research, School of Chemistry and Chemical Engineering, Jiangsu University, No. 301, Xuefu Road, Zhenjiang, Jiangsu Province 212013, PR China
| | - Yilin Deng
- Institute for Energy Research, School of Chemistry and Chemical Engineering, Jiangsu University, No. 301, Xuefu Road, Zhenjiang, Jiangsu Province 212013, PR China
| | - Henan Li
- Institute for Energy Research, School of Chemistry and Chemical Engineering, Jiangsu University, No. 301, Xuefu Road, Zhenjiang, Jiangsu Province 212013, PR China.
| | - Li Xu
- Institute for Energy Research, School of Chemistry and Chemical Engineering, Jiangsu University, No. 301, Xuefu Road, Zhenjiang, Jiangsu Province 212013, PR China.
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4
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Gan Y, Ye Y, Dai X, Yin X, Cao Y, Cai R, Feng B, Wang Q, Zhang X. La and S Co-Doping Induced the Synergism of Multiphase Nickel-Iron Nanosheets with Rich Oxygen Vacancies to Trigger Large-Current-Density Oxygen Evolution and Urea Oxidation Reactions. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2023; 19:e2303250. [PMID: 37464564 DOI: 10.1002/smll.202303250] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/17/2023] [Revised: 06/15/2023] [Indexed: 07/20/2023]
Abstract
The development of cost-effective electrocatalysts for oxygen evolution reaction (OER) and urea oxidation reaction (UOR) is of great significance for hydrogen production. Herein, La and S co-doped multiphase electrocatalyst (LSFN-63) is fabricated by metal-corrosion process. FeOOH can reduce the formation energy of NiOOH, and enhance the stability of NiOOH as active sites for OER/UOR. The rich oxygen vacancies can increase the number of active sites, optimize the adsorption of intermediates, and improve electrical conductivity. Beyond, La and S co-doping can also regulate the electronic structure of FeOOH. As a result, LSFN-63 presents a low overpotential of 210/450 mV at 100/1000 mA cm-2 , small Tafel slope (32 mV dec-1 ), and outstanding stability under 1000 mA cm-2 @60 h, and can also display excellent OER activity with 180 mV at 250 mA cm-2 and long-term catalytic durability at 250 mA cm-2 @135 h in 30 wt% KOH under 60 °C. Moreover, LSFN-63 demonstrates remarkable UOR performance in 1 m KOH + 0.5 m urea, which just requires an ultra-small overpotential of 140 mV at 100 mA cm-2 , and maintain long-term durability over 120 h. This work opens up a promising avenue for the development of high-efficiency electrocatalysts by a facile metal-corrosion strategy.
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Affiliation(s)
- Yonghao Gan
- College of Chemical Engineering and Environment, China University of Petroleum-Beijing, State Key Laboratory of Heavy Oil Processing, Beijing, 102249, China
| | - Ying Ye
- College of Chemical Engineering and Environment, China University of Petroleum-Beijing, State Key Laboratory of Heavy Oil Processing, Beijing, 102249, China
| | - Xiaoping Dai
- College of Chemical Engineering and Environment, China University of Petroleum-Beijing, State Key Laboratory of Heavy Oil Processing, Beijing, 102249, China
| | - Xueli Yin
- College of Chemical Engineering and Environment, China University of Petroleum-Beijing, State Key Laboratory of Heavy Oil Processing, Beijing, 102249, China
| | - Yihua Cao
- College of Chemical Engineering and Environment, China University of Petroleum-Beijing, State Key Laboratory of Heavy Oil Processing, Beijing, 102249, China
| | - Run Cai
- College of Chemical Engineering and Environment, China University of Petroleum-Beijing, State Key Laboratory of Heavy Oil Processing, Beijing, 102249, China
| | - Bo Feng
- College of Chemical Engineering and Environment, China University of Petroleum-Beijing, State Key Laboratory of Heavy Oil Processing, Beijing, 102249, China
| | - Qi Wang
- College of Chemical Engineering and Environment, China University of Petroleum-Beijing, State Key Laboratory of Heavy Oil Processing, Beijing, 102249, China
| | - Xin Zhang
- College of Chemical Engineering and Environment, China University of Petroleum-Beijing, State Key Laboratory of Heavy Oil Processing, Beijing, 102249, China
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5
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Feng X, Zhai B, Cheng R, Yin L, Wen Y, Jiang J, Wang H, Li Z, Zhu Y, He J. Phase Engineering of 2D Spinel-Type Manganese Oxides. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2023; 35:e2304118. [PMID: 37437137 DOI: 10.1002/adma.202304118] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/03/2023] [Revised: 07/10/2023] [Accepted: 07/10/2023] [Indexed: 07/14/2023]
Abstract
2D magnetic materials have been of interest due to their unique long-range magnetic ordering in the low-dimensional regime and potential applications in spintronics. Currently, most studies are focused on strippable van der Waals magnetic materials with layered structures, which typically suffer from a poor stability and scarce species. Spinel oxides have a good environmental stability and rich magnetic properties. However, the isotropic bonding and close-packed nonlayered crystal structure make their 2D growth challenging, let alone the phase engineering. Herein, a phase-controllable synthesis of 2D single-crystalline spinel-type oxides is reported. Using the van der Waals epitaxy strategy, the thicknesses of the obtained tetragonal and hexagonal manganese oxide (Mn3 O4 ) nanosheets can be tuned down to 7.1 nm and one unit cell (0.7 nm), respectively. The magnetic properties of these two phases are evaluated using vibrating-sample magnetometry and first-principle calculations. Both structures exhibit a Curie temperature of 48 K. Owing to its ultrathin geometry, the Mn3 O4 nanosheet exhibits a superior ultraviolet detection performance with an ultralow noise power density of 0.126 pA Hz-1/2 . This study broadens the range of 2D magnetic semiconductors and highlights their potential applications in future information devices.
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Affiliation(s)
- Xiaoqiang Feng
- Key Laboratory of Artificial Micro- and Nanostructures of Ministry of Education, and School of Physics and Technology, Wuhan University, Wuhan, 430072, China
| | - Baoxing Zhai
- Key Laboratory of Artificial Micro- and Nanostructures of Ministry of Education, and School of Physics and Technology, Wuhan University, Wuhan, 430072, China
| | - Ruiqing Cheng
- Key Laboratory of Artificial Micro- and Nanostructures of Ministry of Education, and School of Physics and Technology, Wuhan University, Wuhan, 430072, China
| | - Lei Yin
- Key Laboratory of Artificial Micro- and Nanostructures of Ministry of Education, and School of Physics and Technology, Wuhan University, Wuhan, 430072, China
| | - Yao Wen
- Key Laboratory of Artificial Micro- and Nanostructures of Ministry of Education, and School of Physics and Technology, Wuhan University, Wuhan, 430072, China
| | - Jian Jiang
- Key Laboratory of Artificial Micro- and Nanostructures of Ministry of Education, and School of Physics and Technology, Wuhan University, Wuhan, 430072, China
| | - Hao Wang
- Key Laboratory of Artificial Micro- and Nanostructures of Ministry of Education, and School of Physics and Technology, Wuhan University, Wuhan, 430072, China
| | - Zhongwei Li
- Key Laboratory of Artificial Micro- and Nanostructures of Ministry of Education, and School of Physics and Technology, Wuhan University, Wuhan, 430072, China
| | - Yushan Zhu
- Key Laboratory of Artificial Micro- and Nanostructures of Ministry of Education, and School of Physics and Technology, Wuhan University, Wuhan, 430072, China
| | - Jun He
- Key Laboratory of Artificial Micro- and Nanostructures of Ministry of Education, and School of Physics and Technology, Wuhan University, Wuhan, 430072, China
- Wuhan Institute of Quantum Technology, Wuhan, 430206, China
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6
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Wang F, Gu Y, Tian B, Sun Y, Zheng L, Liu S, Wang Y, Tang L, Han X, Ma J, Ding M. Spinel-Derived Formation and Amorphization of Bimetallic Oxyhydroxides for Efficient Electrocatalytic Biomass Oxidation. J Phys Chem Lett 2023; 14:2674-2683. [PMID: 36892265 DOI: 10.1021/acs.jpclett.3c00103] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
Replacing the oxygen evolution reaction (OER) with water-assisted oxidation of organic molecules represents a promising approach for achieving sustainable electrochemical biomass utilization. Among numerous OER catalysts, spinels have received substantial attention due to their manifold compositions and valence states, yet their application in biomass conversions remains rare. Herein, a series of spinels were investigated for the selective electrooxidation of furfural and 5-hydroxymethylfurfural, two model substrates for versatile value-added chemical products. Spinel sulfides universally exhibit superior catalytic performance compared to that of spinel oxides, and further investigations show that the replacement of oxygen with sulfur led to the complete phase transition of spinel sulfides into amorphous bimetallic oxyhydroxides during electrochemical activation, serving as the active species. Excellent values of conversion rate (100%), selectivity (100%), faradaic efficiency (>95%), and stability were achieved via sulfide-derived amorphous CuCo-oxyhydroxide. Furthermore, a volcano-like correlation was established between their BEOR and OER activities based on an OER-assisted organic oxidation mechanism.
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Affiliation(s)
- Fangyuan Wang
- Key Laboratory of Mesoscopic Chemistry, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China
| | - Yuming Gu
- Key Laboratory of Mesoscopic Chemistry, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China
| | - Bailin Tian
- Key Laboratory of Mesoscopic Chemistry, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China
| | - Yuxia Sun
- Key Laboratory of Mesoscopic Chemistry, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China
| | - Lifeng Zheng
- Key Laboratory of Mesoscopic Chemistry, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China
| | - Shengtang Liu
- Key Laboratory of Mesoscopic Chemistry, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China
| | - Yiqi Wang
- Key Laboratory of Mesoscopic Chemistry, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China
| | - Lingyu Tang
- Key Laboratory of Mesoscopic Chemistry, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China
| | - Xiao Han
- Key Laboratory of Mesoscopic Chemistry, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China
| | - Jing Ma
- Key Laboratory of Mesoscopic Chemistry, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China
| | - Mengning Ding
- Key Laboratory of Mesoscopic Chemistry, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China
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7
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Ho PH, Świrk K, de Luna GS, Jabłońska M, Ospitali F, Di Renzo F, Delahay G, Fornasari G, Vaccari A, Palkovits R, Benito P. Facile coating of Co3O4 on open-cell metallic foam for N2O catalytic decomposition. Chem Eng Res Des 2022. [DOI: 10.1016/j.cherd.2022.09.046] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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8
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Yang Y, Fu W, Chen X, Chen L, Hou C, Tang T, Zhang X. Ceramic nanofiber membrane anchoring nanosized Mn 2O 3 catalytic ozonation of sulfamethoxazole in water. JOURNAL OF HAZARDOUS MATERIALS 2022; 436:129168. [PMID: 35617732 DOI: 10.1016/j.jhazmat.2022.129168] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/03/2022] [Revised: 05/11/2022] [Accepted: 05/14/2022] [Indexed: 06/15/2023]
Abstract
Catalytic ceramic nanofiber membranes (Mn@CNMs) were prepared by anchoring Mn2O3 nanoparticles on the pits of attapulgite (APT) nanofibers via an impregnation and in-situ precipitation method. An integrated catalytic ozonation/membrane filtration process applying Mn@CNM was employed to degrade sulfamethoxazole (SMX) and the removal achieved up to 81.3% during a 7-h continuous filtration. The reactive oxygen species (ROS) quenching and radical detection experiments were conducted to determine the contribution of 1O2, ·OH and O2·- towards the catalytic degradation of SMX. Moreover, Mn@CNM exhibited wide applicability for real water matrix and the total removal of various kinds of emerging contaminants in real hospital wastewater reached up to 98.5%. The excellent performances of Mn@CNM were attributed to the nano-confinement effect in the membrane layer. First, anchoring Mn2O3 nanoparticles on the pits of the APT surface suppressed the growth and aggregation of nanosized Mn2O3, providing abundant reactive sites for catalytic ozonation. Second, the interlaced APT nanofibers formed nano-sized network structures, where ROS and SMX were confined in close vicinity and ROS have more chances to attack SMX. This work provides a promising strategy for the preparation of catalytic ceramic membrane with high catalytic efficiency for degradation of emerging contaminants in water.
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Affiliation(s)
- Yulong Yang
- Institute of Environment and Ecology, Tsinghua Shenzhen International Graduate School, Tsinghua University, Shenzhen 518055, China; School of Environment, Tsinghua University, Beijing 100083, China
| | - Wanyi Fu
- School of Environment, Nanjing University, Nanjing 210023, China.
| | - Xixi Chen
- Institute of Environment and Ecology, Tsinghua Shenzhen International Graduate School, Tsinghua University, Shenzhen 518055, China
| | - Li Chen
- Institute of Environment and Ecology, Tsinghua Shenzhen International Graduate School, Tsinghua University, Shenzhen 518055, China; School of Environment, Tsinghua University, Beijing 100083, China
| | - Congyu Hou
- Institute of Environment and Ecology, Tsinghua Shenzhen International Graduate School, Tsinghua University, Shenzhen 518055, China; School of Environment, Tsinghua University, Beijing 100083, China
| | - Tianhao Tang
- Institute of Environment and Ecology, Tsinghua Shenzhen International Graduate School, Tsinghua University, Shenzhen 518055, China
| | - Xihui Zhang
- Institute of Environment and Ecology, Tsinghua Shenzhen International Graduate School, Tsinghua University, Shenzhen 518055, China; School of Environment, Tsinghua University, Beijing 100083, China.
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9
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Methanol Oxidation Catalytic Performance Enhancement via Constructing Pd-MgAl2O4 Interface and its Reaction Mechanism Investigation. Catal Letters 2022. [DOI: 10.1007/s10562-022-04107-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
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10
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Cohen A, Harpak N, Juhl Y, Shekhter P, Remennik S, Patolsky F. Three-Dimensional Monolithically Self-Grown Metal Oxide Highly Dense Nanonetworks as Free-Standing High-Capacity Anodes for Lithium-Ion Batteries. ACS APPLIED MATERIALS & INTERFACES 2022; 14:28911-28923. [PMID: 35700692 PMCID: PMC9247978 DOI: 10.1021/acsami.2c05902] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/04/2022] [Accepted: 06/03/2022] [Indexed: 06/15/2023]
Abstract
Transition metal oxides (TMOs) have been widely studied as potential next-generation anode materials, owing to their high theoretical gravimetric capacity. However, to date, these anodes syntheses are plagued with time-consuming preparation processes, two-dimensional electrode fabrication, binder requirements, and short operational cycling lives. Here, we present a scalable single-step reagentless process for the synthesis of highly dense Mn3O4-based nanonetwork anodes based on a simple thermal treatment transformation of low-grade steel substrates. The monolithic solid-state chemical self-transformation of the steel substrate results in a highly dense forest of Mn3O4 nanowires, which transforms the electrochemically inactive steel substrate into an electrochemically highly active anode. The proposed method, beyond greatly improving the current TMO performance, surpasses state-of-the-art commercial silicon anodes in terms of capacity and stability. The three-dimensional self-standing anode exhibits remarkably high capacities (>1500 mA h/g), a stable cycle life (>650 cycles), high Coulombic efficiencies (>99.5%), fast rate performance (>1.5 C), and high areal capacities (>2.5 mA h/cm2). This novel experimental paradigm acts as a milestone for next-generation anode materials in lithium-ion batteries, and pioneers a universal method to transform different kinds of widely available, low-cost, steel substrates into electrochemically active, free-standing anodes and allows for the massive reduction of anode production complexity and costs.
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Affiliation(s)
- Adam Cohen
- Department
of Materials Science and Engineering, the Iby and Aladar Fleischman
Faculty of Engineering, Tel Aviv University, Tel Aviv 69978, Israel
| | - Nimrod Harpak
- School
of Chemistry, Faculty of Exact Sciences, Tel Aviv University, Tel Aviv 69978, Israel
| | - Yonatan Juhl
- Department
of Materials Science and Engineering, the Iby and Aladar Fleischman
Faculty of Engineering, Tel Aviv University, Tel Aviv 69978, Israel
| | - Pini Shekhter
- Wolfson
Applied Materials Research Centre, Tel Aviv
University, Tel Aviv 69978, Israel
| | - Sergei Remennik
- The
Center for Nanoscience & Nanotechnology, Edmond J. Safra Campus, The Hebrew University of Jerusalem, Jerusalem 91904, Israel
| | - Fernando Patolsky
- Department
of Materials Science and Engineering, the Iby and Aladar Fleischman
Faculty of Engineering, Tel Aviv University, Tel Aviv 69978, Israel
- School
of Chemistry, Faculty of Exact Sciences, Tel Aviv University, Tel Aviv 69978, Israel
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11
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Mechanistic Studies of Oxygen-Atom Transfer (OAT) in the Homogeneous Conversion of N2O by Ru Pincer Complexes. INORGANICS 2022. [DOI: 10.3390/inorganics10060069] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
As the overall turnover-limiting step (TOLS) in the homogeneous conversion of N2O, the oxygen-atom transfer (OAT) from an N2O to an Ru-H complex to generate an N2 and Ru-OH complex has been comprehensively investigated by density functional theory (DFT) computations. Theoretical results show that the proton transfer from Ru-H to the terminal N of endo N2O is most favorable pathway, and the generation of N2 via OAT is accomplished by a three-step mechanism [N2O-insertion into the Ru-H bond (TS-1-2, 24.1 kcal mol−1), change of geometry of the formed (Z)-O-bound oxyldiazene intermediate (TS-2-3, 5.5 kcal mol−1), and generation of N2 from the proton transfer (TS-3-4, 26.6 kcal mol−1)]. The Gibbs free energy of activation (ΔG‡) of 29.0 kcal mol−1 for the overall turnover-limiting step (TOLS) is determined. With the participation of potentially existing traces of water in the THF solvent serving as a proton shuttle, the Gibbs free energy of activation in the generation of N2 (TS-3-4-OH2) decreases to 15.1 kcal mol−1 from 26.6 kcal mol−1 (TS-3-4). To explore the structure–activity relationship in the conversion of N2O to N2, the catalytic activities of a series of Ru-H complexes (C1–C10) are investigated. The excellent linear relationships (R2 > 0.91) between the computed hydricities (ΔGH−) and ΔG‡ of TS-3-4, between the computed hydricities (ΔGH−) and the ΔG‡ of TOLS, were obtained. The utilization of hydricity as a potential parameter to predict the activity is consistent with other reports, and the current results suggest a more electron-donating ligand could lead to a more active Ru-H catalyst.
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12
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Magnesium-Modified Co3O4 Catalyst with Remarkable Performance for Toluene Low Temperature Deep Oxidation. Catalysts 2022. [DOI: 10.3390/catal12040411] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
Co3O4, MgCo2O4 and MgO materials have been synthesized using a simple co-precipitation approach and systematically characterized. The total conversion of toluene to CO2 and H2O over spinel MgCo2O4 with wormlike morphology has been investigated. Compared with single metal oxides (Co3O4 and MgO), MgCo2O4 with the highest activity has exhibited almost 100% oxidation of toluene at 255 °C. The obtained results are analogous to typical precious metal supported catalysts. The activation energy of toluene over MgCo2O4 (38.5 kJ/mol) is found to be much lower than that of Co3O4 (68.9 kJ/mol) and MgO ((87.8 kJ/mol)). Compared with the single Co and Mg metal oxide, the as-prepared spinel MgCo2O4 exhibits a larger surface area, highest absorbed oxygen and more oxygen vacancies, thus highest mobility of oxygen species due to its good redox capability. Furthermore, the samples specific surface area, low-temperature reducibility and surface adsorbed oxygenated species ratio decreased as follows: MgCo2O4 > Co3O4 > MgO; which is completely in line with the catalytic performance trends and constitute the reasons for MgCo2O4 high excellent activity towards toluene total oxidation. The overall finding supported by ab initio molecular dynamics simulations of toluene oxidation on the Co3O4 and MgCo2O4 suggest that the catalytic process follows a Mars–van Krevelen mechanism.
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Kulyukhin SA, Gorbacheva MP. Joint Removal of N2O and CH3I from Air Flow through Ag-Containing Inorganic Composites. RADIOCHEMISTRY 2022. [DOI: 10.1134/s1066362221060060] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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14
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Topka P, Jirátová K, Dvořáková M, Balabánová J, Koštejn M, Kovanda F. Hydrothermal deposition as a novel method for the preparation of Co-Mn mixed oxide catalysts supported on stainless steel meshes: application to VOC oxidation. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:5172-5183. [PMID: 34417699 DOI: 10.1007/s11356-021-15906-y] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/31/2021] [Accepted: 08/06/2021] [Indexed: 06/13/2023]
Abstract
The aim of this work was to develop a novel method for the preparation of structured Co-Mn mixed oxide catalysts: deposition on stainless steel meshes by hydrothermal synthesis. The use of meshes enabled the deposition of a thin layer of the active phase, which significantly suppressed the influence of internal diffusion. Consequently, the prepared catalysts exhibited from 48 to 114 times higher catalytic activity in ethanol oxidation than the commercial pelleted Co-Mn-Al catalyst. Moreover, we have shown that their catalytic activity correlated with the proportion of surface oxygen vacancies determined by XPS. Finally, the outstanding activity of the catalyst with Co:Mn ratio of 0.5 was ascribed to the mutual effect of high number of oxygen vacancies and exceptional redox properties.
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Affiliation(s)
- Pavel Topka
- Institute of Chemical Process Fundamentals of the Czech Academy of Sciences, Rozvojová 135, 165 02, Prague, Czech Republic.
| | - Květuše Jirátová
- Institute of Chemical Process Fundamentals of the Czech Academy of Sciences, Rozvojová 135, 165 02, Prague, Czech Republic
| | - Michaela Dvořáková
- Department of Solid State Chemistry, University of Chemistry and Technology, Prague, Technická 5, 166 28, Prague, Czech Republic
| | - Jana Balabánová
- Institute of Chemical Process Fundamentals of the Czech Academy of Sciences, Rozvojová 135, 165 02, Prague, Czech Republic
| | - Martin Koštejn
- Institute of Chemical Process Fundamentals of the Czech Academy of Sciences, Rozvojová 135, 165 02, Prague, Czech Republic
| | - František Kovanda
- Department of Solid State Chemistry, University of Chemistry and Technology, Prague, Technická 5, 166 28, Prague, Czech Republic
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First principle study of optoelectronic and thermoelectric properties of magnesium based MgX2O4 (X = Sb, Bi) spinels. J SOLID STATE CHEM 2021. [DOI: 10.1016/j.jssc.2021.122480] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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16
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Carrillo AJ, Chinchilla LE, Iglesias-Juez A, Gutiérrez-Rubio S, Sastre D, Pizarro P, Hungría AB, Coronado JM. Determining the Role of Fe-Doping on Promoting the Thermochemical Energy Storage Performance of (Mn 1- x Fe x ) 3 O 4 Spinels. SMALL METHODS 2021; 5:e2100550. [PMID: 34927936 DOI: 10.1002/smtd.202100550] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/25/2021] [Revised: 08/12/2021] [Indexed: 06/14/2023]
Abstract
Mn oxides are promising materials for thermochemical heat store, but slow reoxidation of Mn3 O4 to Mn2 O3 limits efficiency. In contrast, (Mn1- x Fex )3 O4 oxides show an enhanced transformation rate, but fundamental understanding of the role played by Fe cations is lacking. Here, nanoscale characterization of Fe-doped Mn oxides is performed to elucidate how Fe incorporation influences solid-state transformations. X-ray diffraction reveals the presence of two distinct spinel phases, cubic jacobsite and tetragonal hausmannite for samples with more than 10% of Fe. Chemical mapping exposes wide variation of Fe content between grains, but an even distribution within crystallites. Due to the similarities of spinels structures, high-resolution scanning transmission electron microscopy cannot discriminate unambiguously between them, but Fe-enriched crystallites likely correspond to jacobsite. In situ X-ray absorption spectroscopy confirms that increasing Fe content up to 20% boosts the reoxidation rate, leading to the transformation of Mn2+ in the spinel phase to Mn3+ in bixbyite. Extended X-ray absorption fine structure shows that FeO length is larger than MnO, but both electron energy loss spectroscopy and X-ray absorption near edge structure indicate that iron is always present as Fe3+ in octahedral sites. These structural modifications may facilitate ionic diffusion during bixbyite formation.
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Affiliation(s)
- Alfonso J Carrillo
- Instituto de Tecnología Química, Universitat Politècnica de València - CSIC, 46022, Valencia, Spain
| | - Lidia E Chinchilla
- Departamento de Ciencia de Materiales, Ingeniería Metalúrgica y Química Inorgánica, Universidad de Cádiz, Campus Río San Pedro, 11510, Puerto Real, Spain
| | - Ana Iglesias-Juez
- Instituto de Catálisis y Petroleoquímica, CSIC, 28049, Madrid, Spain
| | | | | | - Patricia Pizarro
- IMDEA Energy Institute, 28935, Madrid, Spain
- Chemical and Environmental Engineering Group, ESCET, Universidad Rey Juan Carlos, 28933, Madrid, Spain
| | - Ana B Hungría
- Departamento de Ciencia de Materiales, Ingeniería Metalúrgica y Química Inorgánica, Universidad de Cádiz, Campus Río San Pedro, 11510, Puerto Real, Spain
| | - Juan M Coronado
- Instituto de Catálisis y Petroleoquímica, CSIC, 28049, Madrid, Spain
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Yu X, Ren Y, Yu D, Chen M, Wang L, Wang R, Fan X, Zhao Z, Cheng K, Chen Y, Gryboś J, Kotarba A, Sojka Z, Wei Y, Liu J. Hierarchical Porous K-OMS-2/3DOM-m Ti 0.7Si 0.3O 2 Catalysts for Soot Combustion: Easy Preparation, High Catalytic Activity, and Good Resistance to H 2O and SO 2. ACS Catal 2021. [DOI: 10.1021/acscatal.1c00748] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Xuehua Yu
- Institute of Catalysis for Energy and Environment, College of Chemistry and Chemical Engineering, Shenyang Normal University, Shenyang, Liaoning 110034, China
| | - Yu Ren
- State Key Laboratory of Heavy Oil Processing, China University of Petroleum, 18# Fuxue Road, Chang Ping, Beijing 102249, China
| | - Di Yu
- Institute of Catalysis for Energy and Environment, College of Chemistry and Chemical Engineering, Shenyang Normal University, Shenyang, Liaoning 110034, China
| | - Maozhong Chen
- Institute of Catalysis for Energy and Environment, College of Chemistry and Chemical Engineering, Shenyang Normal University, Shenyang, Liaoning 110034, China
| | - Lanyi Wang
- Institute of Catalysis for Energy and Environment, College of Chemistry and Chemical Engineering, Shenyang Normal University, Shenyang, Liaoning 110034, China
- State Key Laboratory of Heavy Oil Processing, China University of Petroleum, 18# Fuxue Road, Chang Ping, Beijing 102249, China
| | - Ruidan Wang
- Institute of Catalysis for Energy and Environment, College of Chemistry and Chemical Engineering, Shenyang Normal University, Shenyang, Liaoning 110034, China
| | - Xiaoqiang Fan
- Institute of Catalysis for Energy and Environment, College of Chemistry and Chemical Engineering, Shenyang Normal University, Shenyang, Liaoning 110034, China
| | - Zhen Zhao
- Institute of Catalysis for Energy and Environment, College of Chemistry and Chemical Engineering, Shenyang Normal University, Shenyang, Liaoning 110034, China
- State Key Laboratory of Heavy Oil Processing, China University of Petroleum, 18# Fuxue Road, Chang Ping, Beijing 102249, China
| | - Kai Cheng
- Energy and Catalysis Laboratory, Department of Mechanical and Automation Engineering, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong SAR, China
| | - Yongsheng Chen
- Energy and Catalysis Laboratory, Department of Mechanical and Automation Engineering, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong SAR, China
| | - Joanna Gryboś
- Faculty of Chemistry, Jagiellonian University, ul. Gronostajowa 2, 30-387 Kraków, Poland
| | - Andrzej Kotarba
- Faculty of Chemistry, Jagiellonian University, ul. Gronostajowa 2, 30-387 Kraków, Poland
| | - Zbigniew Sojka
- Faculty of Chemistry, Jagiellonian University, ul. Gronostajowa 2, 30-387 Kraków, Poland
| | - Yuechang Wei
- State Key Laboratory of Heavy Oil Processing, China University of Petroleum, 18# Fuxue Road, Chang Ping, Beijing 102249, China
| | - Jian Liu
- State Key Laboratory of Heavy Oil Processing, China University of Petroleum, 18# Fuxue Road, Chang Ping, Beijing 102249, China
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Amrute AP, De Bellis J, Felderhoff M, Schüth F. Mechanochemical Synthesis of Catalytic Materials. Chemistry 2021; 27:6819-6847. [PMID: 33427335 PMCID: PMC8248068 DOI: 10.1002/chem.202004583] [Citation(s) in RCA: 70] [Impact Index Per Article: 23.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2020] [Indexed: 12/02/2022]
Abstract
The mechanochemical synthesis of nanomaterials for catalytic applications is a growing research field due to its simplicity, scalability, and eco-friendliness. Besides, it provides materials with distinct features, such as nanocrystallinity, high defect concentration, and close interaction of the components in a system, which are, in most cases, unattainable by conventional routes. Consequently, this research field has recently become highly popular, particularly for the preparation of catalytic materials for various applications, ranging from chemical production over energy conversion catalysis to environmental protection. In this Review, recent studies on mechanochemistry for the synthesis of catalytic materials are discussed. Emphasis is placed on the straightforwardness of the mechanochemical route-in contrast to more conventional synthesis-in fabricating the materials, which otherwise often require harsh conditions. Distinct material properties achieved by mechanochemistry are related to their improved catalytic performance.
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Affiliation(s)
- Amol P. Amrute
- Department of Heterogeneous CatalysisMax-Planck-Institut für KohlenforschungKaiser-Wilhelm-Platz 145470Mülheim an der RuhrGermany
- Current address: Institute of Chemical and Engineering SciencesA*STAR1 Pesek RoadJurong Island627833 SingaporeSingapore
| | - Jacopo De Bellis
- Department of Heterogeneous CatalysisMax-Planck-Institut für KohlenforschungKaiser-Wilhelm-Platz 145470Mülheim an der RuhrGermany
| | - Michael Felderhoff
- Department of Heterogeneous CatalysisMax-Planck-Institut für KohlenforschungKaiser-Wilhelm-Platz 145470Mülheim an der RuhrGermany
| | - Ferdi Schüth
- Department of Heterogeneous CatalysisMax-Planck-Institut für KohlenforschungKaiser-Wilhelm-Platz 145470Mülheim an der RuhrGermany
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Muñoz Gil D, Boulahya K, Santamaria Santoyo M, Azcondo MT, Amador U. Superior Performance as Cathode Material for Intermediate-Temperature Solid Oxide Fuel Cells of the Ruddlesden-Popper n = 2 Member Eu 2SrCo 0.50Fe 1.50O 7-δ with Low Cobalt Content. Inorg Chem 2021; 60:3094-3105. [PMID: 33586955 DOI: 10.1021/acs.inorgchem.0c03391] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The effects of the contents of iron and cobalt on the crystal structure, oxygen content, thermal expansion coefficient, and electrical-electrochemical properties of materials Eu2SrCoxFe2-xO7-δ (x = 0.50 and 1.00) are reported. These oxides are well-ordered new members of the Ruddlesden-Popper series (Eu,Sr)n+1(Co,Fe)nO3n+1 system with n = 2 as determined by selected area electron diffraction and high-resolution transmission electron microscopy and X-ray diffraction studies. The two materials are semiconductors of p-type, with much higher total conductivity under working conditions for the low cobalt compound, Eu2SrCo0.50Fe1.50O7-δ. Composite cathodes prepared with this oxide present much lower area-specific resistance values (0.08 Ω·cm2 at 973 K in air) than composites containing Eu2SrCo1.00Fe1.00O7-δ (1.15 Ω·cm2). This significant difference is related to the much higher total conductivity and a sufficiently high content of oxygen vacancies in the Fe-rich phase. The excellent electrochemical performance of Eu2SrCo0.50Fe1.50O7-δ with low cobalt content, which shows one of the lowest area-specific resistance reported so far for a Ruddlesden-Popper oxide, makes it a good candidate for application as a cathode material for solid oxide fuel cells at intermediate temperatures in real devices.
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Affiliation(s)
- Daniel Muñoz Gil
- Instituto de Cerámica y Vidrio, CSIC, Cantoblanco, 28049 Madrid, Spain
| | - Khalid Boulahya
- Departamento de Química Inorgánica, Facultad Ciencias Químicas, Universidad Complutense, E-28040 Madrid, Spain
| | - María Santamaria Santoyo
- Departamento de Química Inorgánica, Facultad Ciencias Químicas, Universidad Complutense, E-28040 Madrid, Spain
| | - M Teresa Azcondo
- Facultad de Farmacia, Departamento de Química y Bioquímica, Urbanización Montepríncipe, Universidad San Pablo-CEU, CEU Universities, Boadilla del Monte, E-28668 Madrid, Spain
| | - Ulises Amador
- Facultad de Farmacia, Departamento de Química y Bioquímica, Urbanización Montepríncipe, Universidad San Pablo-CEU, CEU Universities, Boadilla del Monte, E-28668 Madrid, Spain
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20
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Li Y, Tang F, Wang D, Wang X. A key step for preparing highly active Mg–Co composite oxide catalysts for N 2O decomposition. Catal Sci Technol 2021. [DOI: 10.1039/d1cy00137j] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The hydrothermal treatment accelerates the Mg2+ substitution for Co2+ at tetrahedral sites and thus greatly increases the activity of the catalyst.
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Affiliation(s)
- Ye Li
- State Key Laboratory of Fine Chemicals
- School of Chemical Engineering
- Dalian University of Technology
- Dalian 116024
- China
| | - Fan Tang
- State Key Laboratory of Fine Chemicals
- School of Chemical Engineering
- Dalian University of Technology
- Dalian 116024
- China
| | - Dongqi Wang
- State Key Laboratory of Fine Chemicals
- School of Chemical Engineering
- Dalian University of Technology
- Dalian 116024
- China
| | - Xinping Wang
- State Key Laboratory of Fine Chemicals
- School of Chemical Engineering
- Dalian University of Technology
- Dalian 116024
- China
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21
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Aranifard S, Bell AT, Keil FJ, Heyden A. Kinetic modeling of nitrous oxide decomposition on Fe-ZSM-5 in the presence of nitric oxide based on parameters obtained from first-principles calculations. Catal Sci Technol 2021. [DOI: 10.1039/d1cy00252j] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A variety of experiments for the N2O decomposition over Fe-ZSM-5 catalysts have been simulated in the presence and absence of small amounts of nitric oxide and water vapor.
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Affiliation(s)
- Sara Aranifard
- Department of Chemical Engineering
- University of South Carolina
- Columbia
- USA
| | - Alexis T. Bell
- Department of Chemical and Biomolecular Engineering
- University of California Berkeley
- Berkeley
- USA
| | - Frerich J. Keil
- Department of Chemical Reaction Engineering
- Hamburg University of Technology
- 21073 Hamburg
- Germany
| | - Andreas Heyden
- Department of Chemical Engineering
- University of South Carolina
- Columbia
- USA
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23
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Coudercy C, L'hospital V, Checa R, Le Valant A, Afanasiev P, Loridant S. On the reaction mechanism of MnO x/SAPO-34 bifunctional catalysts for the conversion of syngas to light olefins. Catal Sci Technol 2021. [DOI: 10.1039/d1cy01673c] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Methanol is a key reaction intermediate formed on MnOx that synergistically reacts with SAPO-34 to produce light olefins.
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Affiliation(s)
- Christophe Coudercy
- Univ Lyon, CNRS, Université Claude Bernard-Lyon 1, IRCELYON-UMR 5256, 2 avenue A. Einstein, F-69626 Villeurbanne Cedex, France
| | - Valentin L'hospital
- IC2MP, UMR 7285 CNRS, Université de Poitiers, 4 Rue Michel Brunet, F-86022 Poitiers Cedex, France
| | - Ruben Checa
- Univ Lyon, CNRS, Université Claude Bernard-Lyon 1, IRCELYON-UMR 5256, 2 avenue A. Einstein, F-69626 Villeurbanne Cedex, France
| | - Anthony Le Valant
- IC2MP, UMR 7285 CNRS, Université de Poitiers, 4 Rue Michel Brunet, F-86022 Poitiers Cedex, France
| | - Pavel Afanasiev
- Univ Lyon, CNRS, Université Claude Bernard-Lyon 1, IRCELYON-UMR 5256, 2 avenue A. Einstein, F-69626 Villeurbanne Cedex, France
| | - Stéphane Loridant
- Univ Lyon, CNRS, Université Claude Bernard-Lyon 1, IRCELYON-UMR 5256, 2 avenue A. Einstein, F-69626 Villeurbanne Cedex, France
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K-Modified Co–Mn–Al Mixed Oxide—Effect of Calcination Temperature on N2O Conversion in the Presence of H2O and NOx. Catalysts 2020. [DOI: 10.3390/catal10101134] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
The effect of calcination temperature (500–700 °C) on physico-chemical properties and catalytic activity of 2 wt. % K/Co-Mn-Al mixed oxide for N2O decomposition was investigated. Catalysts were characterized by inductively coupled plasma spectroscopy (ICP), X-ray powder diffraction (XRD), temperature-programmed reduction by hydrogen (TPR-H2), temperature-programmed desorption of CO2 (TPD-CO2), temperature-programmed desorption of NO (TPD-NO), X-ray photoelectron spectrometry (XPS) and N2 physisorption. It was found that the increase in calcination temperature caused gradual crystallization of Co-Mn-Al mixed oxide, which manifested itself in the decrease in Co2+/Co3+ and Mn3+/Mn4+ surface molar ratio, the increase in mean crystallite size leading to lowering of specific surface area and poorer reducibility. Higher surface K content normalized per unit surface led to the increase in surface basicity and adsorbed NO per unit surface. The effect of calcination temperature on catalytic activity was significant mainly in the presence of NOx, as the optimal calcination temperature of 500 °C is necessary to ensure sufficient low surface basicity, leading to the highest catalytic activity. Observed NO inhibition was caused by the formation of surface mononitrosyl species bonded to tetrahedral metal sites or nitrite species, which are stable at reaction temperatures up to 450 °C and block active sites for N2O decomposition.
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Kulyukhin SA, Rumer IA, Gorbacheva MP, Bessonov AA. Catalytic Decomposition of N2O in Air Flows of Gas-Purification Systems in Radiochemical Industries. RADIOCHEMISTRY 2020. [DOI: 10.1134/s1066362220020058] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Wójcik S, Indyka P, Sojka Z, Kotarba A. Development of structured Co3O4-based catalyst for N2O removal from hospital ventilation systems. Catal Today 2020. [DOI: 10.1016/j.cattod.2019.08.052] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
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Redox effects in Cu, Co or Fe in oxides nanocrystals with high catalytic activity for the acetonitrile combustion. SN APPLIED SCIENCES 2020. [DOI: 10.1007/s42452-020-2476-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022] Open
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Atomic-Level Dispersion of Bismuth over Co3O4 Nanocrystals—Outstanding Promotional Effect in Catalytic DeN2O. Catalysts 2020. [DOI: 10.3390/catal10030351] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
A series of cobalt spinel catalysts doped with bismuth in a broad range of 0–15.4 wt % was prepared by the co-precipitation method. The catalysts were thoroughly characterized by several physicochemical methods (X-ray fluorescence spectroscopy (XRF), X-ray diffraction (XRD), Raman spectroscopy (µRS), X-ray photoelectron spectroscopy (XPS), nitrogen adsorption analyzed with Brunaer-Emmett-Teller theory (N2-BET), work function measurements (WF)), as well as aberration-corrected scanning transmission electron microscopy (STEM) coupled with energy-dispersive X-ray spectroscopy (EDX) and electron energy-loss spectroscopy (EELS). The optimal bismuth promoter content was found to be 6.6 wt %, which remarkably enhanced the performance of the cobalt spinel catalyst, shifting the N2O decomposition (deN2O) temperature window (T50%) down from approximately 400 °C (for Co3O4) to 240 °C (for the 6.6 wt % Bi-Co3O4 catalyst). The high-resolution STEM images revealed that the high activity of the 6.6 wt % Bi-Co3O4 catalyst can be associated with an even, atomic-level dispersion (3.5 at. nm−2) of bismuth over the surface of cobalt spinel nanocrystals. The improvement in catalytic activity was accompanied by an observed increase in the work function. We concluded that Bi promoted mostly the oxygen recombination step of a deN2O reaction, thus demonstrating for the first time the key role of the atomic-level dispersion of a surface promoter in deN2O reactions.
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Isupova LA, Ivanova YA. Removal of Nitrous Oxide in Nitric Acid Production. KINETICS AND CATALYSIS 2020. [DOI: 10.1134/s0023158419060041] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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30
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Anke S, Falk T, Bendt G, Sinev I, Hävecker M, Antoni H, Zegkinoglou I, Jeon H, Knop-Gericke A, Schlögl R, Roldan Cuenya B, Schulz S, Muhler M. On the reversible deactivation of cobalt ferrite spinel nanoparticles applied in selective 2-propanol oxidation. J Catal 2020. [DOI: 10.1016/j.jcat.2019.12.007] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Effect of Water Molecule on Photo-Assisted Nitrous Oxide Decomposition over Oxotitanium Porphyrin: A Theoretical Study. Catalysts 2020. [DOI: 10.3390/catal10020157] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
Abstract
Water vapor has generally been recognized as an inhibitor of catalysts in nitrous oxide (N2O) decomposition because it limits the lifetime of catalytic reactors. Oxygen produced in reactions also deactivates the catalytic performance of bulk surface catalysts. Herein, we propose a potential catalyst that is tolerant of water and oxygen in the process of N2O decomposition. By applying density functional theory calculations, we investigated the reaction mechanism of N2O decomposition into N2 and O2 catalyzed by oxotitanium(IV) porphyrin (TiO-por) with interfacially bonded water. The activation energies of reaction Path A and B are compared under thermal and photo-assisted conditions. The obtained calculation results show that the photo-assisted reaction in Path B is highly exothermic and proceeds smoothly with the low activation barrier of 27.57 kcal/mol at the rate determining step. The produced O2 is easily desorbed from the surface of the catalyst, requiring only 4.96 kcal/mol, indicating the suppression of catalyst deactivation. Therefore, TiO-por is theoretically proved to have the potential to be a desirable catalyst for N2O decomposition with photo-irradiation because of its low activation barrier, water resistance, and ease of regeneration.
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Yu H, Wang X, Li Y. Strong impact of cobalt distribution on the activity for Co3O4/CaCO3 catalyzing N2O decomposition. Catal Today 2020. [DOI: 10.1016/j.cattod.2018.10.036] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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33
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Bulk, Surface and Interface Promotion of Co3O4 for the Low-Temperature N2O Decomposition Catalysis. Catalysts 2019. [DOI: 10.3390/catal10010041] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
Nanocrystalline cobalt spinel has been recognized as a very active catalytic material for N2O decomposition. Its catalytic performance can be substantially modified by proper doping with alien cations with precise control of their loading and location (spinel surface, bulk, and spinel-dopant interface). Various doping scenarios for a rational design of the optimal catalyst for low-temperature N2O decomposition are analyzed in detail and the key reactivity descriptors are identified (content and topological localization of dopants, their redox vs. non-redox nature and catalyst work function). The obtained results are discussed in the broader context of the available literature data to establish general guidelines for the rational design of the N2O decomposition catalyst based on a cobalt spinel platform.
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Zasada F, Gryboś J, Budiyanto E, Janas J, Sojka Z. Oxygen species stabilized on the cobalt spinel nano-octahedra at various reaction conditions and their role in catalytic CO and CH4 oxidation, N2O decomposition and oxygen isotopic exchange. J Catal 2019. [DOI: 10.1016/j.jcat.2019.02.010] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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35
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Must the Best Laboratory Prepared Catalyst Also Be the Best in an Operational Application? Catalysts 2019. [DOI: 10.3390/catal9020160] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Three cobalt mixed oxide deN2O catalysts, with optimal content of alkali metals (K, Cs), were prepared on a large scale, shaped into tablets, and tested in a pilot plant reactor connected to the bypassed tail gas from the nitric production plant, downstream from the selective catalytic reduction of NOx by ammonia (SCR NOx/NH3) catalyst. High efficiency in N2O removal (N2O conversion of 75–90% at 450 °C, VHSV = 11,000 m3 mbed−3 h−1) was achieved. However, a different activity order of the commercially prepared catalyst tablets compared to the laboratory prepared catalyst grains was observed. Catalytic experiments in the kinetic regime using laboratory and commercial prepared catalysts and characterization methods (XRD, TPR-H2, physisorption, and chemical analysis) were utilized to explain this phenomenon. Experimentally determined internal effectiveness factors and their general dependency on kinetic constants were evaluated to discuss the relationship between the catalyst activity in the kinetic regime and the internal diffusion limitation in catalyst tablets as well as their morphology. The theoretical N2O conversion as a function of the intrinsic kinetic constants and diffusion rate, expressed as effective diffusion coefficients, was evaluated to estimate the final catalyst performance on a large scale and to answer the question of the above article title.
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Performance of C2H4 Reductant in Activated-Carbon- Supported MnOx-based SCR Catalyst at Low Temperatures. ENERGIES 2018. [DOI: 10.3390/en12010123] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Hydrocarbons as reductants show promising results for replacing NH3 in SCR technology. Therefore, considerable interest exists for developing low-temperature (<200 °C) and environmentally friendly HC-SCR catalysts. Hence, C2H4 was examined as a reductant using activated-carbon-supported MnOx-based catalyst in low-temperature SCR operation. Its sensitivity to Mn concentration and operating temperature was parametrically studied, the results of which showed that the catalyst activity followed the order of 130 °C > 150 °C > 180 °C with an optimized Mn concentration near 3.0 wt.%. However, rapid deactivation of catalytic activity also occurred when using C2H4 as the reductant. The mechanism of deactivation was explored and is discussed herein in which deactivation is attributed to two factors. The manganese oxide was reduced to Mn3O4 during reaction testing, which contained relatively low activity compared to Mn2O3. Also, increased crystallinity of the reduced manganese and the formation of carbon black occurred during SCR reaction testing, and these constituents on the catalyst’s surface blocked pores and active sites from participating in catalytic activity.
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Fan S, Li X, Zeng L, Zhang M, Yin Z, Lian T, Chen A. Relationships Between Crystal, Internal Microstructures, and Physicochemical Properties of Copper-Zinc-Iron Multinary Spinel Hierarchical Nano-microspheres. ACS APPLIED MATERIALS & INTERFACES 2018; 10:35919-35931. [PMID: 30252434 DOI: 10.1021/acsami.8b11382] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Rational design and fabrication of high quality complex multicomponent spinel ferrite with specific microstructures and solar light harvestings toward CO2 reduction and antibiotic degradation to future energetic and catalytic applications are highly desirable. In this study, novel copper-zinc-iron multinary spinel hierarchical nano-microspheres (MSHMs) with different internal structures (solid nano-microspheres, yolk-shell hollow nano-microspheres, and double-shelled hollow nano-microspheres) have been successfully developed by a facile self-templated solvothermal strategy. The morphology and structure, optical, as well as photoinduced redox reactions including interfacial charge carrier behaviors and the intrinsic relationship of structure-property between intrinsic nano-microstructures and physicochemical performance of copper-zinc-iron ferrite MSHMs composites were systematically investigated with the assistance of various on- and/or off- line physical-chemical means and deeply elucidated in terms of the research outcomes. It is demonstrated that the modification of the interior microstructures can be applied to tune the catalytic properties of multinary spinel by tailoring the temperature programming to fine control the two opposite forces of contraction (Fc) and adhesion (Fa). Among various internal microstructures, the obtained double-shelled copper-zinc-iron MSHMs exhibited the superior catalytic performance toward 8.8 and 38 μmol for H2 and CO productions as well as 80.4% removal of sulfamethoxazole antibiotics. As evidenced from primary characterizations, for example, combined steady-state PL, ns-TAS, and Mössbauer and sequential investigations, the remarkable improvements in the catalytic activity can be primarily attributed to several crucial factors, for example, the more effective e--h+ spatial separations and interfacial transfers, multiple internal light scattering, higher photonic energy harvesting and effective reactive oxygen species generation with long radical lifetimes. The current research provides new insights into the molecular design of novel copper-zinc-iron multinary spinels and the intrinsic relationship of structure-property between interior structures (e.g., different crystal texture, morphologies structures) and the physicochemical performance of the aforementioned multinary spinels.
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Affiliation(s)
- Shiying Fan
- State Key Laboratory of Fine Chemicals, Key Laboratory of Industrial Ecology and Environmental Engineering, School of Environmental Science and Technology , Dalian University of Technology , Dalian 116024 , China
| | - Xinyong Li
- State Key Laboratory of Fine Chemicals, Key Laboratory of Industrial Ecology and Environmental Engineering, School of Environmental Science and Technology , Dalian University of Technology , Dalian 116024 , China
| | - Libin Zeng
- State Key Laboratory of Fine Chemicals, Key Laboratory of Industrial Ecology and Environmental Engineering, School of Environmental Science and Technology , Dalian University of Technology , Dalian 116024 , China
| | - Mingmei Zhang
- State Key Laboratory of Fine Chemicals, Key Laboratory of Industrial Ecology and Environmental Engineering, School of Environmental Science and Technology , Dalian University of Technology , Dalian 116024 , China
| | - Zhifan Yin
- State Key Laboratory of Fine Chemicals, Key Laboratory of Industrial Ecology and Environmental Engineering, School of Environmental Science and Technology , Dalian University of Technology , Dalian 116024 , China
| | - Tingting Lian
- State Key Laboratory of Fine Chemicals, Key Laboratory of Industrial Ecology and Environmental Engineering, School of Environmental Science and Technology , Dalian University of Technology , Dalian 116024 , China
| | - Aicheng Chen
- Electrochemical Technology Centre, Department of Chemistry , University of Guelph , 50 Stone Road E , Guelph , Ontario N1G 2W1 , Canada
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38
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Yu H, Wang X. Apparent activation energies and reaction rates of N2O decomposition via different routes over Co3O4. CATAL COMMUN 2018. [DOI: 10.1016/j.catcom.2017.12.004] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022] Open
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Shahid MM, Rameshkumar P, Basirunc WJ, Wijayantha U, Chiu WS, Khiew PS, Huang NM. An electrochemical sensing platform of cobalt oxide@gold nanocubes interleaved reduced graphene oxide for the selective determination of hydrazine. Electrochim Acta 2018. [DOI: 10.1016/j.electacta.2017.10.157] [Citation(s) in RCA: 47] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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40
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Zhao Q, Yan Z, Chen C, Chen J. Spinels: Controlled Preparation, Oxygen Reduction/Evolution Reaction Application, and Beyond. Chem Rev 2017; 117:10121-10211. [DOI: 10.1021/acs.chemrev.7b00051] [Citation(s) in RCA: 854] [Impact Index Per Article: 122.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Affiliation(s)
- Qing Zhao
- Key Laboratory of Advanced
Energy Materials Chemistry (Ministry of Education), Collaborative
Innovation Center of Chemical Science and Engineering, College of
Chemistry, Nankai University, Tianjin 300071, China
| | - Zhenhua Yan
- Key Laboratory of Advanced
Energy Materials Chemistry (Ministry of Education), Collaborative
Innovation Center of Chemical Science and Engineering, College of
Chemistry, Nankai University, Tianjin 300071, China
| | - Chengcheng Chen
- Key Laboratory of Advanced
Energy Materials Chemistry (Ministry of Education), Collaborative
Innovation Center of Chemical Science and Engineering, College of
Chemistry, Nankai University, Tianjin 300071, China
| | - Jun Chen
- Key Laboratory of Advanced
Energy Materials Chemistry (Ministry of Education), Collaborative
Innovation Center of Chemical Science and Engineering, College of
Chemistry, Nankai University, Tianjin 300071, China
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41
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Carabineiro S, Papista E, Marnellos G, Tavares P, Maldonado-Hódar F, Konsolakis M. Catalytic decomposition of N 2 O on inorganic oxides: Εffect of doping with Au nanoparticles. MOLECULAR CATALYSIS 2017. [DOI: 10.1016/j.mcat.2017.04.009] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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42
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Tan P, Li G, Fang R, Chen L, Luque R, Li Y. Controlled Growth of Monodisperse Ferrite Octahedral Nanocrystals for Biomass-Derived Catalytic Applications. ACS Catal 2017. [DOI: 10.1021/acscatal.6b02853] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- Ping Tan
- State
Key Laboratory of Pulp and Paper Engineering, School of Chemistry
and Chemical Engineering, South China University of Technology, Guangzhou 510640, China
| | - Guanna Li
- Catalysis
Engineering, Department of Chemical Engineering, Delft University of Technology, Van der Maasweg 9, 2629 HZ Delft, The Netherlands
| | - Ruiqi Fang
- State
Key Laboratory of Pulp and Paper Engineering, School of Chemistry
and Chemical Engineering, South China University of Technology, Guangzhou 510640, China
| | - Liyu Chen
- State
Key Laboratory of Pulp and Paper Engineering, School of Chemistry
and Chemical Engineering, South China University of Technology, Guangzhou 510640, China
| | - Rafael Luque
- Departamento
de Química Orgánica, Universidad de Córdoba, Edif.
Marie Curie, Ctra Nnal IV-A, Km 396, E14014, Córdoba, Spain
| | - Yingwei Li
- State
Key Laboratory of Pulp and Paper Engineering, School of Chemistry
and Chemical Engineering, South China University of Technology, Guangzhou 510640, China
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Zasada F, Janas J, Piskorz W, Gorczyńska M, Sojka Z. Total Oxidation of Lean Methane over Cobalt Spinel Nanocubes Controlled by the Self-Adjusted Redox State of the Catalyst: Experimental and Theoretical Account for Interplay between the Langmuir–Hinshelwood and Mars–Van Krevelen Mechanisms. ACS Catal 2017. [DOI: 10.1021/acscatal.6b03139] [Citation(s) in RCA: 86] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Filip Zasada
- Faculty of Chemistry, Jagiellonian University, ul. Ingardena 3, 30-060 Krakow, Poland
| | - Janusz Janas
- Faculty of Chemistry, Jagiellonian University, ul. Ingardena 3, 30-060 Krakow, Poland
| | - Witold Piskorz
- Faculty of Chemistry, Jagiellonian University, ul. Ingardena 3, 30-060 Krakow, Poland
| | - Magdalena Gorczyńska
- Faculty of Chemistry, Jagiellonian University, ul. Ingardena 3, 30-060 Krakow, Poland
| | - Zbigniew Sojka
- Faculty of Chemistry, Jagiellonian University, ul. Ingardena 3, 30-060 Krakow, Poland
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Nguyen XS, Zhang G, Yang X. Mesocrystalline Zn-Doped Fe 3O 4 Hollow Submicrospheres: Formation Mechanism and Enhanced Photo-Fenton Catalytic Performance. ACS APPLIED MATERIALS & INTERFACES 2017; 9:8900-8909. [PMID: 28233986 DOI: 10.1021/acsami.6b16839] [Citation(s) in RCA: 62] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
Uniform and magnetic recyclable mesocrystalline Zn-doped Fe3O4 hollow submicrospheres (HSMSs) were successfully synthesized via a simple one-pot solvothermal route and were used for efficient heterogeneous photo-Fenton catalyst. XRD, XPS, Raman spectroscopy, Mössbauer spectroscopy, SEM, HRTEM, and EDX analyses revealed that the shell of HSMSs is highly porous and assembled by oriented attachment of magnetite nanocrystal building blocks with Zn-rich surfaces. Furthermore, a possible formation mechanism of mesocrystalline hollow materials was proposed. First, Fe3O4 mesocrystals were assembled by oriented nanocrystals, and a Zn-rich amorphous shell grew on the surfaces. Then, Zn gradually diffused into Fe3O4 crystals to form Zn-doped Fe3O4 due to the Kirkendall effect with increasing the reaction time. Meanwhile, the inner nanocrystals would be dissolved, and outer particles would grow larger owing to the Ostwald ripening process, leading to the formation of a hollow structure with porous shell. The Zn-doped Fe3O4 HSMSs exhibited high and stable photo-Fenton activity for degradation of rhodamine B (RhB) and cephalexin under visible-light irradiation in the presence of H2O2, which results from their hollow mesocrystal structure and Zn doping. It could be easily separated and reused by an external magnetic field. The results suggested that the as-obtained magnetite hollow mesocrystals could be a promising catalyst in the photo-Fenton process.
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Affiliation(s)
- Xuan Sang Nguyen
- Hubei Key Laboratory of Mineral Resources Processing and Environment, School of Resources and Environmental Engineering, Wuhan University of Technology , 122 Luoshi Road, Wuhan 430070, China
- Environmental Engineering Institute, Viet Nam Maritime University , Haiphong, Vietnam
| | - Gaoke Zhang
- Hubei Key Laboratory of Mineral Resources Processing and Environment, School of Resources and Environmental Engineering, Wuhan University of Technology , 122 Luoshi Road, Wuhan 430070, China
| | - Xianfeng Yang
- Analytical and Testing Centre, South China University of Technology , Guangzhou 510640, China
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45
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Jiang Y, Song N, Wang C, Pinna N, Lu X. A facile synthesis of Fe3O4/nitrogen-doped carbon hybrid nanofibers as a robust peroxidase-like catalyst for the sensitive colorimetric detection of ascorbic acid. J Mater Chem B 2017; 5:5499-5505. [DOI: 10.1039/c7tb01058c] [Citation(s) in RCA: 58] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
We describe a facile synthesis of Fe3O4/nitrogen-doped carbon hybrid nanofibers as a robust peroxidase-like catalyst for the sensitive colorimetric detection of ascorbic acid.
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Affiliation(s)
- Yanzhou Jiang
- Alan G. MacDiarmid Institute
- College of Chemistry
- Jilin University
- Changchun
- P. R. China
| | - Na Song
- Alan G. MacDiarmid Institute
- College of Chemistry
- Jilin University
- Changchun
- P. R. China
| | - Ce Wang
- Alan G. MacDiarmid Institute
- College of Chemistry
- Jilin University
- Changchun
- P. R. China
| | - Nicola Pinna
- Institut für Chemie and IRIS Adlershof
- Humboldt-Universität zu Berlin
- 12489 Berlin
- Germany
| | - Xiaofeng Lu
- Alan G. MacDiarmid Institute
- College of Chemistry
- Jilin University
- Changchun
- P. R. China
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47
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Surface oxygen dynamics and H2 oxidation on cobalt spinel surface probed by 18O/16O isotopic exchange and accounted for by DFT molecular modeling: facile interfacial oxygen atoms flipping through transient peroxy intermediate. RESEARCH ON CHEMICAL INTERMEDIATES 2016. [DOI: 10.1007/s11164-016-2798-y] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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48
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Legutko P, Jakubek T, Kaspera W, Stelmachowski P, Sojka Z, Kotarba A. Strong Enhancement of deSoot Activity of Transition Metal Oxides by Alkali Doping: Additive Effects of Potassium and Nitric Oxide. Top Catal 2016. [DOI: 10.1007/s11244-016-0727-3] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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