1
|
Wu J, Chen J, Chen X, Liu Y, Hu Z, Lou F, Chou S, Qiao Y. Cross-linked K 0.5MnO 2 nanoflower composites for high rate and low overpotential Li-CO 2 batteries. Chem Sci 2024; 15:9591-9598. [PMID: 38939144 PMCID: PMC11206224 DOI: 10.1039/d4sc01799d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2024] [Accepted: 05/14/2024] [Indexed: 06/29/2024] Open
Abstract
Rechargeable Li-CO2 batteries are deemed to be attractive energy storage systems, as they can effectively inhale and fix carbon dioxide and possess an extremely high energy density. Unfortunately, the irreversible decomposition of the insoluble and insulating Li2CO3 results in awful electrochemical performance and inferior energy efficiency of Li-CO2 batteries. Furthermore, the low energy efficiency will exacerbate the extra waste of resources. Therefore, it is vital to design novel and efficient catalysts to enhance the battery performance. Herein, a facile, one-step strategy is introduced to design cross-linked, ultrathin K0.5MnO2 nanoflowers combined with CNTs (K0.5MnO2/CNT) as a highly efficient cathode for Li-CO2 batteries. Impressively, the Li-CO2 battery based on the K0.5MnO2/CNT cathode achieves a low overpotential (1.05 V) and a high average energy efficiency (87.95%) at a current density of 100 mA g-1. Additionally, the K0.5MnO2/CNT cathode can steadily run for over 100 cycles (overpotential < 1.20 V). Moreover, a low overpotential of 1.47 V can be obtained even at a higher current density of 1000 mA g-1, indicating the superior rate performance of K0.5MnO2/CNT. This strategy offers new insight and guidance for the development of low-cost and high-performance Li-CO2 batteries.
Collapse
Affiliation(s)
- Jiawei Wu
- School of Chemistry and Chemical Engineering, Henan Normal University Xinxiang Henan 453007 China
- Sinopec Petroleum Engineering Zhongyuan Co. Ltd, Natural Gas Technology Center Zhengzhou Henan 450000 China
| | - Jian Chen
- School of Environment and Chemical Engineering, Shanghai University Shanghai 200444 China
| | - Xiaoyang Chen
- School of Environment and Chemical Engineering, Shanghai University Shanghai 200444 China
| | - Yang Liu
- School of Chemistry and Chemical Engineering, Henan Normal University Xinxiang Henan 453007 China
- School of Environment and Chemical Engineering, Shanghai University Shanghai 200444 China
| | - Zhe Hu
- College of Materials Science and Engineering, Shenzhen University Shenzhen 518055 China
| | - Feijian Lou
- School of Chemistry and Chemical Engineering, Henan Normal University Xinxiang Henan 453007 China
| | - Shulei Chou
- Institute for Carbon Neutralization, College of Chemistry and Materials Engineering, Wenzhou University Wenzhou Zhejiang 325035 China
| | - Yun Qiao
- School of Chemistry and Chemical Engineering, Henan Normal University Xinxiang Henan 453007 China
- School of Environment and Chemical Engineering, Shanghai University Shanghai 200444 China
| |
Collapse
|
2
|
Hu X, Liao Y, Wu M, Zheng W, Long M, Chen L. Mesoporous copper-doped δ-MnO 2 superstructures to enable high-performance aqueous zinc-ion batteries. J Colloid Interface Sci 2024; 674:297-305. [PMID: 38936086 DOI: 10.1016/j.jcis.2024.06.152] [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: 03/21/2024] [Revised: 06/20/2024] [Accepted: 06/21/2024] [Indexed: 06/29/2024]
Abstract
Aqueous zinc-ion batteries (AZIBs) are competitive alternatives for large-scale energy-storage devices owing to the abundance of zinc and low cost, high theoretical specific capacity, and high safety of these batteries. High-performance and stable cathode materials in AZIBs are the key to storing Zn2+. Manganese-based cathode materials have attracted considerable attention because of their abundance, low toxicity, low cost, and abundant valence states (Mn2+, Mn3+, Mn4+, and Mn7+). However, as a typical cathode material, birnessite-MnO2 (δ-MnO2) has low conductivity and structural instability. The crystal structure may undergo severe distortion, disorder, and structural damage, leading to severe cyclic instability. In addition, its energy-storage mechanism is still unclear, and most of the reported manganese oxide-based materials do not have excellent electrochemical performance. Herein, we propose a copper-doped Cu0.05K0.11Mn0.84O2·0.54H2O (Cu2-KMO) cathode, which exhibits a large interlayer spacing, a stable structure, and accelerated reaction kinetics. This cathode was prepared using a simple hydrothermal method. The AZIB assembled using Cu2-KMO showed high specific capacity (600 mA h g-1 at 0.1 A g-1 after 75 cycles). The dissolution-deposition energy storage mechanism of Cu-KMO in AZIBs with double electron transfer was revealed using ex situ tests. The good electrochemical performance of the Cu2-KMO cathode fabricated by the doping strategy in this study provides ideas for the subsequent preparation of manganese dioxide using other strategies.
Collapse
Affiliation(s)
- Xi Hu
- Department of Applied Chemistry, School of Chemistry and Chemical Engineering, Chongqing University, Chongqing 401331, China
| | - Yanxin Liao
- Department of Applied Chemistry, School of Chemistry and Chemical Engineering, Chongqing University, Chongqing 401331, China
| | - Mengcheng Wu
- Department of Applied Chemistry, School of Chemistry and Chemical Engineering, Chongqing University, Chongqing 401331, China
| | - Wanying Zheng
- Department of Applied Chemistry, School of Chemistry and Chemical Engineering, Chongqing University, Chongqing 401331, China
| | - Mujun Long
- Laboratory of Materials and Metallurgy, College of Materials Science and Engineering, Chongqing University, Chongqing 400044, China.
| | - Lingyun Chen
- Department of Applied Chemistry, School of Chemistry and Chemical Engineering, Chongqing University, Chongqing 401331, China.
| |
Collapse
|
3
|
Ma C, Pan J, Chen C, Dong Y, Yao F, Wang F, Song M. Investigation into the roles of interfacial H 2O structure in catalytic oxidation of HCHO and CO over CuMnO 2 catalysts. J Environ Sci (China) 2024; 137:310-320. [PMID: 37980018 DOI: 10.1016/j.jes.2022.10.044] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2022] [Revised: 10/26/2022] [Accepted: 10/28/2022] [Indexed: 11/20/2023]
Abstract
The rapid deactivation of cost-effective MnO2-based catalysts in humid air limits their application in practice, and the identification of the role of water in an oxidation process is significant for developing water-resistant MnO2-based catalysts. Here, CuMnO2 showed a 20.3% HCHO conversion in 10 hr at room temperature in humid air with relative humidity of 40%, but deactivated in 3 hr in dry air. The excellent activity and stability of HCHO oxidation in humid air were attributed to the positive effect of H2O on HCHO oxidation to the H2O-HOCH2OH supermolecule assemblies via hydrogen bonds formed on CuMnO2. H2O-HOCH2OH supermolecule assemblies tend to be oxidized to carbonate, which is further oxidized to CO2. Furthermore, CuMnO2 exhibited a much poorer activity of CO oxidation in humid air, but the CO conversion was still 100% in 10 hr in dry air. H2O showed a competitive adsorption effect to CO on CuMnO2. CuMnO2 could be applied in HCHO elimination in humid air and CO elimination in dry air.
Collapse
Affiliation(s)
- Chunyan Ma
- Key Laboratory of Environmental Nanotechnology and Health Effects, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Jushuang Pan
- Key Laboratory of Environmental Nanotechnology and Health Effects, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Cheng Chen
- Key Laboratory of Environmental Nanotechnology and Health Effects, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Yuanyuan Dong
- No. 52 Institute of China North Industries Group Yantai Branch Co. Ltd., Yantai 264000, China
| | - Feng Yao
- Key Laboratory of Environmental Nanotechnology and Health Effects, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Fengbang Wang
- Key Laboratory of Environmental Nanotechnology and Health Effects, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Maoyong Song
- Key Laboratory of Environmental Nanotechnology and Health Effects, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; University of Chinese Academy of Sciences, Beijing 100049, China.
| |
Collapse
|
4
|
Li Q, Deng C, Zhou W, Huang P, Lu C, Feng H, Dong L, Tan L, Zhang YW, Zhou C, Qin Y, Xia D. Ultrathin La yCoO x Nanosheets with High Porosity Featuring Boosted Catalytic Oxidation of Benzene: Mechanism Elucidation via an Experiment-Theory Combined Paradigm. Inorg Chem 2024; 63:3974-3985. [PMID: 38346714 DOI: 10.1021/acs.inorgchem.3c04621] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/27/2024]
Abstract
Designing transition-metal oxides for catalytically removing the highly toxic benzene holds significance in addressing indoor/outdoor environmental pollution issues. Herein, we successfully synthesized ultrathin LayCoOx nanosheets (thickness of ∼1.8 nm) with high porosity, using a straightforward coprecipitation method. Comprehensive characterization techniques were employed to analyze the synthesized LayCoOx catalysts, revealing their low crystallinity, high surface area, and abundant porosity. Catalytic benzene oxidation tests demonstrated that the La0.029CoOx-300 nanosheet exhibited the most optimal performance. This catalyst enabled complete benzene degradation at a relatively low temperature of 220 °C, even under a high space velocity (SV) of 20,000 h-1, and displayed remarkable durability throughout various catalytic assessments, including SV variations, exposure to water vapor, recycling, and long time-on-stream tests. Characterization analyses confirmed the enhanced interactions between Co and doped La, the presence of abundant adsorbed oxygen, and the extensive exposure of Co3+ species in La0.029CoOx-300 nanosheets. Theoretical calculations further revealed that La doping was beneficial for the formation of oxygen vacancies and the adsorption of more hydroxyl groups. These features strongly promoted the adsorption and activation of oxygen, thereby accelerating the benzene oxidation processes. This work underscores the advantages of doping rare-earth elements into transition-metal oxides as a cost-effective yet efficient strategy for purifying industrial exhausts.
Collapse
Affiliation(s)
- Qun Li
- School of Chemistry and Chemical Engineering, Chongqing University, Chongqing 400044, China
| | - Chunyan Deng
- School of Chemistry and Chemical Engineering, Chongqing University, Chongqing 400044, China
| | - Wenyu Zhou
- School of Chemistry and Chemical Engineering, Chongqing University, Chongqing 400044, China
- Institute of High Performance Computing (IHPC), Agency of Science, Technology and Research (A*STAR), Singapore 138632, Singapore
| | - Peng Huang
- Henry Royce Institute, The University of Manchester, Manchester M13 9PL, U.K
| | - Chenyang Lu
- School of Chemistry and Chemical Engineering, Chongqing University, Chongqing 400044, China
| | - Haisong Feng
- Institute of High Performance Computing (IHPC), Agency of Science, Technology and Research (A*STAR), Singapore 138632, Singapore
- State Key Laboratory of Chemical Resource Engineering, Beijing Advanced Innovation Center for Soft Matter Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China
| | - Lichun Dong
- School of Chemistry and Chemical Engineering, Chongqing University, Chongqing 400044, China
| | - Luxi Tan
- School of Chemistry and Chemical Engineering, Chongqing University, Chongqing 400044, China
| | - Yong-Wei Zhang
- Institute of High Performance Computing (IHPC), Agency of Science, Technology and Research (A*STAR), Singapore 138632, Singapore
| | - Cailong Zhou
- School of Chemistry and Chemical Engineering, Chongqing University, Chongqing 400044, China
| | - Yi Qin
- Department of Engineering Science, University of Oxford, Oxford OX1 3PJ, U.K
| | - Dong Xia
- Department of Engineering Science, University of Oxford, Oxford OX1 3PJ, U.K
| |
Collapse
|
5
|
Xie Z, Hei J, Li C, Yin X, Wu F, Cheng L, Meng S. Constructing carbon supported copper-based catalysts for efficient CO 2 hydrogenation to methanol. RSC Adv 2023; 13:14554-14564. [PMID: 37188247 PMCID: PMC10177214 DOI: 10.1039/d3ra01502e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2023] [Accepted: 05/08/2023] [Indexed: 05/17/2023] Open
Abstract
An activated carbon-supported Cu/ZnO catalyst (CCZ-AE-ox) was successfully obtained by the ammonia evaporation method for the hydrogenation of carbon dioxide to methanol, and the surface properties of the catalyst post-calcination and reduction were investigated. Activated carbon facilitated the increased dispersion of the loaded metals, which promote the CO2 space-time yield (STY) of methanol and turnover frequency (TOF) on the active sites. Furthermore, the factors affecting the catalyst in the hydrogenation of CO2 to methanol were in-depth investigated. The larger surface area and higher CO2 adsorption capacity are found to make possible the main attributions of the superior activity of the CCZ-AE-ox catalyst.
Collapse
Affiliation(s)
- Zhong Xie
- Engineering Technology Research Center of Preparation and Application of Industrial Ceramics of Anhui Province, School of Chemistry and Material Engineering, Chaohu University 1 Bantang Road Chaohu 238000 P. R. China
| | - Jinpei Hei
- Engineering Technology Research Center of Preparation and Application of Industrial Ceramics of Anhui Province, School of Chemistry and Material Engineering, Chaohu University 1 Bantang Road Chaohu 238000 P. R. China
| | - Chuan Li
- Engineering Technology Research Center of Preparation and Application of Industrial Ceramics of Anhui Province, School of Chemistry and Material Engineering, Chaohu University 1 Bantang Road Chaohu 238000 P. R. China
| | - Xiaojie Yin
- Engineering Technology Research Center of Preparation and Application of Industrial Ceramics of Anhui Province, School of Chemistry and Material Engineering, Chaohu University 1 Bantang Road Chaohu 238000 P. R. China
| | - Fengyi Wu
- Engineering Technology Research Center of Preparation and Application of Industrial Ceramics of Anhui Province, School of Chemistry and Material Engineering, Chaohu University 1 Bantang Road Chaohu 238000 P. R. China
| | - Lei Cheng
- Engineering Technology Research Center of Preparation and Application of Industrial Ceramics of Anhui Province, School of Chemistry and Material Engineering, Chaohu University 1 Bantang Road Chaohu 238000 P. R. China
| | - Sugang Meng
- Key Laboratory of Green and Precise Synthetic Chemistry and Applications, Ministry of Education, Huaibei Normal University Huaibei Anhui 235000 P. R. China
| |
Collapse
|
6
|
Liu X, Zhou J, Xia Q, Li B, Gao Q, Zhao S, Khan A, Xu A, Li X. Modified birnessite MnO 2 as efficient Fenton-like catalysts through electron transfer process between the simultaneously surface-activated peroxymonosulfate and pollutants. JOURNAL OF HAZARDOUS MATERIALS 2023; 443:130178. [PMID: 36252404 DOI: 10.1016/j.jhazmat.2022.130178] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/09/2022] [Revised: 09/23/2022] [Accepted: 10/09/2022] [Indexed: 06/16/2023]
Abstract
The development of efficient and eco-friendly Mn-based hybrids for the degradation of biorefractory organic pollutants via peroxymonosulfate (PMS) activation is highly desired. In this study, a novel graphite nanosheet (GNs)-based Fe-Mn bimetallic oxide (Fe doped birnessite MnO2, FeMn/GNs) was synthesized under mild conditions. Compared with monometallic Fe or Mn oxide on GNs, FeMn/GNs exhibited a higher surface area, decreased Mn oxidation states, stronger interaction with GNs, and more active sites for PMS adsorption. Among different Fe/Mn ratios, Fe2Mn1/GNs showed the optimum performance for bisphenol A (BPA) degradation with the first-order rate constant of 0.22 min-1, which was about 8.5 and 12.9 times higher than that of Mn/GNs and Fe/GNs, respectively. Different from the pollutant-catalyst-PMS electron transfer mechanism for Mn/GNs, the direct two-electron transfer in FeMn/GNs+PMS system, was mainly processed between the simultaneously activated BPA and PMS. This was probably based on the double adsorption sites of Fe and Mn species on the same catalyst: PMS was adsorbed by Fe species through hydroxyl groups, while BPA was mainly coordinated with Mn species due to the layered structure and hydrophobicity of the Mn oxide. This study is expected to provide the rational design of efficient Mn-based hybrids for PMS activation.
Collapse
Affiliation(s)
- Xiuying Liu
- School of Chemistry and Chemical Engineering, Wuhan Textile University, Wuhan 430200, PR China
| | - Jiao Zhou
- School of Chemistry and Chemical Engineering, Wuhan Textile University, Wuhan 430200, PR China
| | - Qianna Xia
- School of Chemistry and Chemical Engineering, Wuhan Textile University, Wuhan 430200, PR China
| | - Bowen Li
- School of Chemistry and Chemical Engineering, Wuhan Textile University, Wuhan 430200, PR China
| | - Qiaohui Gao
- School of Chemistry and Chemical Engineering, Wuhan Textile University, Wuhan 430200, PR China
| | - Shuaiqi Zhao
- School of Chemistry and Chemical Engineering, Wuhan Textile University, Wuhan 430200, PR China
| | - Aimal Khan
- School of Chemistry and Chemical Engineering, Wuhan Textile University, Wuhan 430200, PR China
| | - Aihua Xu
- School of Chemistry and Chemical Engineering, Wuhan Textile University, Wuhan 430200, PR China
| | - Xiaoxia Li
- School of Chemistry and Chemical Engineering, Wuhan Textile University, Wuhan 430200, PR China; Hubei Provincial Engineering Laboratory for Clean Production and High Value Utilization of Bio-Based Textile Materials, Wuhan Textile University, Wuhan 430200, PR China.
| |
Collapse
|
7
|
Zhao H, Zhang Z, Han Y, Yang W, Tang W, Yue T, Li Z. Visual detection of vitamin C in fruits and vegetables using UiO-66 loaded Ce-MnO 2 mimetic oxidase. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2023; 285:121900. [PMID: 36170775 DOI: 10.1016/j.saa.2022.121900] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/06/2022] [Revised: 09/07/2022] [Accepted: 09/14/2022] [Indexed: 06/16/2023]
Abstract
A nanocomposite (UiO-66/Ce-MnO2) was fabricated by combining UiO-66 with cerium-doped manganese dioxide (Ce-MnO2) for colorimetric detecting vitamin C (Vc). Compared with traditional artificial enzymes, the as-synthesized UiO-66/Ce-MnO2 were simple to prepare and did not require the participation of other active substances. The doping of cerium increased the oxygen vacancies and the UiO-66 as a carrier improved the dispersibility. The formation of superoxide anion (O2-) and the inside Ce4+/Ce3+ and Mn4+/Mn3+ redox couples of UiO-66/Ce-MnO2 endowed UiO-66/Ce-MnO2 with a high catalytic capability, which could catalytically oxidize 3, 3', 5, 5'-tetramethylbenzidine (TMB) into oxidation state TMB (oxTMB) without H2O2, accompanying with color change and a prominent peak at 652 nm in UV-vis spectra. Based on the inhibitory effects of Vc on catalytic oxidation of TMB, detection of Vc can be achieved, exhibiting a linear relationship in the concentration of 1.13-17.01 μmol L-1 with a low detection limit of 65.82 nmol L-1. This system can also be detected by smartphone, the linear detection range is 12.47-22.67 μmol L-1. Vc contents in fruits and vegetables detected by the sensor were in good agreement with the 2, 4-Dinitrophenylhydrazine colorimetry method (P > 0.05), indicating a reliable sensor for Vc detection.
Collapse
Affiliation(s)
- Haiping Zhao
- College of Food Science and Engineering, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Ziyi Zhang
- College of Food Science and Engineering, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Yong Han
- College of Food Science and Engineering, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Weixia Yang
- College of Food Science and Engineering, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Wenzhi Tang
- College of Food Science and Engineering, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Tianli Yue
- College of Food Science and Engineering, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Zhonghong Li
- College of Food Science and Engineering, Northwest A&F University, Yangling, Shaanxi 712100, China; Laboratory of Quality & Safety Risk Assessment for Agro-products (Yangling), Ministry of Agriculture, Yangling, Shaanxi 712100, China.
| |
Collapse
|
8
|
Li R, Rao Y, Huang Y. Advances in catalytic elimination of atmospheric pollutants by two-dimensional transition metal oxides. CHINESE CHEM LETT 2022. [DOI: 10.1016/j.cclet.2022.108000] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
|
9
|
Chen R, Zhang H, Wang J, Xu D, Tang X, Gong W, Liang H. Insight into the role of biogenic manganese oxides-assisted gravity-driven membrane filtration systems toward emerging contaminants removal. WATER RESEARCH 2022; 224:119111. [PMID: 36122447 DOI: 10.1016/j.watres.2022.119111] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/24/2022] [Revised: 09/10/2022] [Accepted: 09/12/2022] [Indexed: 06/15/2023]
Abstract
Effective water purification technologies are required to remove emerging contaminants (ECs) and prevent their extensive occurrence in rural areas. In this work, coupling gravity-driven membrane (GDM) filtration with biogenic manganese oxides (BioMnOx) in the biofouling layer was utilized for treating water containing SMX. Comparisons between BioMnOx-GDM (with BioMnOx) and Control-GDM (without BioMnOx) indicated that BioMnOx could significantly promote the removal of DOC, NH4+-N, and fluorescent pollutants due to its strong oxidating capacity and high biological activity. The formation of BioMnOx increased the abundance of SMX-degrading bacteria, enriched the metabolic pathway and mineralization rate of SMX, and effectively promoted the remove of SMX. More importantly, BioMnOx facilitated the removal of antibiotic resistance genes (ARGs) in the GDM, because it increased the link between microorganisms and reduced the concentration of SMX, thus reduced the expression of ARGs. LB-EPS played an important role in the membrane fouling. Compared with the Control-GDM, the concentration of LB-EPS in BioMnOx-GDM decreased, which was beneficial to alleviate membrane fouling. Although a thicker biofouling layer (1774.88 μm vs.775.54 μm) was formed in BioMnOx-GDM, the biofilm with higher porosity (64.93% vs. 41.24%) had a more positive effect on the flux. Overall, BioMnOx could improve the pollutant removal and stable flux level of the GDM system. BioMnOx-GDM effectively avoided the risks brought by ECs and ensured water safety in rural areas.
Collapse
Affiliation(s)
- Rui Chen
- National Engineering Research Centre for Bioenergy, Harbin Institute of Technology, Harbin, 150090, PR China; State Key Laboratory of Urban Water Resource and Environment (SKLUWRE), School of Environment, Harbin Institute of Technology, Harbin, 150090, PR China
| | - Han Zhang
- National Engineering Research Centre for Bioenergy, Harbin Institute of Technology, Harbin, 150090, PR China; State Key Laboratory of Urban Water Resource and Environment (SKLUWRE), School of Environment, Harbin Institute of Technology, Harbin, 150090, PR China
| | - Jinlong Wang
- National Engineering Research Centre for Bioenergy, Harbin Institute of Technology, Harbin, 150090, PR China; State Key Laboratory of Urban Water Resource and Environment (SKLUWRE), School of Environment, Harbin Institute of Technology, Harbin, 150090, PR China
| | - Daliang Xu
- National Engineering Research Centre for Bioenergy, Harbin Institute of Technology, Harbin, 150090, PR China; State Key Laboratory of Urban Water Resource and Environment (SKLUWRE), School of Environment, Harbin Institute of Technology, Harbin, 150090, PR China
| | - Xiaobin Tang
- National Engineering Research Centre for Bioenergy, Harbin Institute of Technology, Harbin, 150090, PR China; State Key Laboratory of Urban Water Resource and Environment (SKLUWRE), School of Environment, Harbin Institute of Technology, Harbin, 150090, PR China
| | - Weijia Gong
- School of Engineering, Northeast Agricultural University, 600 Changjiang Street, Xiangfang District, Harbin, 150030, PR China
| | - Heng Liang
- National Engineering Research Centre for Bioenergy, Harbin Institute of Technology, Harbin, 150090, PR China; State Key Laboratory of Urban Water Resource and Environment (SKLUWRE), School of Environment, Harbin Institute of Technology, Harbin, 150090, PR China.
| |
Collapse
|
10
|
Dong N, Ye Q, Zhang D, Xiao Y, Dai H. Reduced graphene oxide as an effective promoter to the layered manganese oxide-supported Ag catalysts for the oxidation of ethyl acetate and carbon monoxide. JOURNAL OF HAZARDOUS MATERIALS 2022; 431:128518. [PMID: 35219061 DOI: 10.1016/j.jhazmat.2022.128518] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/11/2021] [Revised: 02/09/2022] [Accepted: 02/17/2022] [Indexed: 06/14/2023]
Abstract
The layered manganese oxide (δ-MnO2)-supported reduced graphene oxide (rGO)-promoted silver catalysts (xAg- yrGO/δ-MnO2; x and y are the Ag and rGO contents (wt%), respectively) were prepared via a polyvinyl alcohol-protected reduction route. Physicochemical properties of these materials were determined using the numerous techniques, and their catalytic activities were evaluated for the oxidation of CO and ethyl acetate. It is found that the loading of rGO as an electron transfer promoter could significantly strengthen the metal-support interaction (SMSI) between Ag and δ-MnO2 and increase specific surface area of the sample, hence improving catalytic performance of the sample. Activity evaluation reveals that 1Ag- 1.0rGO/δ-MnO2 showed the best catalytic activity and the lowest apparent activation energy (Ea), giving a T90% of 140 °C and an Ea of 42.7 kJ/mol for CO oxidation, and a T90% of 160 °C and an Ea of 39.8 kJ/mol for ethyl acetate oxidation at space velocity (SV) = 60,000 mL/(g h). The good performance of 1Ag- 1.0rGO/δ-MnO2 was associated with its high Mn3+/Mn4+ or Oads/Olatt molar ratio, good low-temperature reducibility, and strong SMSI between Ag and δ-MnO2. The in situ DRIFTS characterization demonstrates that the carbonate and acetate species were the main intermediate products in CO and ethyl acetate oxidation over 1Ag- 1.0rGO/δ-MnO2, respectively. The 1Ag- 1.0rGO/δ-MnO2 sample was not significantly altered in physicochemical property after 55 h of stability test, but its activity decreased in the presence of water vapor, especially such an effect on ethyl acetate oxidation was more obvious, which was possibly due to the competitive adsorption of water and reactants on the catalyst surface.
Collapse
Affiliation(s)
- Ning Dong
- Key Laboratory of Beijing on Regional Air Pollution Control, Department of Environmental Science, School of Environmental and Chemical Engineering, Faculty of Environment and Life, Beijing University of Technology, Beijing 100124, China
| | - Qing Ye
- Key Laboratory of Beijing on Regional Air Pollution Control, Department of Environmental Science, School of Environmental and Chemical Engineering, Faculty of Environment and Life, Beijing University of Technology, Beijing 100124, China.
| | - Dan Zhang
- Key Laboratory of Beijing on Regional Air Pollution Control, Department of Environmental Science, School of Environmental and Chemical Engineering, Faculty of Environment and Life, Beijing University of Technology, Beijing 100124, China
| | - Yang Xiao
- Key Laboratory of Beijing on Regional Air Pollution Control, Department of Environmental Science, School of Environmental and Chemical Engineering, Faculty of Environment and Life, Beijing University of Technology, Beijing 100124, China
| | - Hongxing Dai
- Beijing Key Laboratory for Green Catalysis and Separation, Key Laboratory of Beijing on Regional Air Pollution Control, Key Laboratory of Advanced Functional Materials, Education Ministry of China, Beijing 100124, China; Laboratory of Catalysis Chemistry and Nanoscience, Department of Environmental Chemical Engineering, School of Environmental and Chemical Engineering, Faculty of Environment and Life, Beijing University of Technology, Beijing 100124, China.
| |
Collapse
|
11
|
Shi DD, Wang SZ, Li Y, Di YW, Wang T. The adsorption mechanism of Zn 2+ by triclinic birnessite and the mechanism. ENVIRONMENTAL TECHNOLOGY 2022; 43:927-934. [PMID: 32791892 DOI: 10.1080/09593330.2020.1811393] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/26/2020] [Accepted: 08/07/2020] [Indexed: 06/11/2023]
Abstract
In this paper, the reaction mechanism for the adsorption of Zn2+ by synthetic triclinic Na-birnessite was studied by reacting synthetic triclinic Na-birnessite with Zn2+ in solution, thereby providing a theoretical basis for the purification of heavy metal ions in acid soil and water by triclinic birnessite. The adsorption effect of Zn2+ on Na-birnessite enhances with an increase in either reaction time or Na-birnessite dosage, as well as decrease of pH. Na-birnessite can effectively adsorb Zn2+ in acidic solutions without any secondary pollution, and the stronger the acidity, the better the treatment effect. In acidic conditions, H+ in solution exchanges with Na+ in the interlayer of triclinic Na-birnessite, then a small part of Zn2+ in solution exchanges with the Mn2+ produced during the triclinic-to-hexagonal phase transformation, and most of the Zn2+ forms a complex with OH- on the octahedral layer, which loses protons due to the consumption of H+ ions. Finally, Zn2+ adsorbs above and below octahedral vacancies in hexagonal birnessite in either an octahedral or tetrahedral coordination.
Collapse
Affiliation(s)
- Dong-Dong Shi
- Institute of Earth Sciences, China University of Geosciences, Beijing, People's Republic of China
| | - Shu-Zhi Wang
- College of Mining Engineering, North China University of Science and Technology, Tangshan, Hebei, People's Republic of China
| | - Ye Li
- College of Mining Engineering, North China University of Science and Technology, Tangshan, Hebei, People's Republic of China
| | - Ying-Wei Di
- Department of Resource Management, Tangshan Normal University, Tangshan, Hebei, People's Republic of China
| | - Tao Wang
- Chinese Academy of Geological Sciences, Beijing, People's Republic of China
| |
Collapse
|
12
|
Yang W, Zhao X, Wang Y, Wang X, Liu H, Yang W, Zhou H, Wu YA, Sun C, Peng Y, Li J. Atomically dispersed Ag on δ-MnO 2via cation vacancy trapping for toluene catalytic oxidation. Catal Sci Technol 2022. [DOI: 10.1039/d2cy01102f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Atomic dispersion of Ag on δ-MnO2 was achieved via H2O2-induced Mn vacancy trapping. Single-atom Ag could activate adjacent lattice oxygen, facilitating methyl oxidation and benzene ring cleavage to improve toluene oxidation activity.
Collapse
Affiliation(s)
- Wenhao Yang
- State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing 100084, China
| | - Xiaoguang Zhao
- Sinopec Research Institute of Petroleum Processing, Beijing 100083, China
| | - Ya Wang
- State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing 100084, China
| | - Xiyang Wang
- Department of Mechanical and Mechatronics Engineering, and Waterloo Institute for Nanotechnology, University of Waterloo, ON, N2L 3G1, Canada
| | - Hao Liu
- State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing 100084, China
| | - Weinan Yang
- State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing 100084, China
| | - Hua Zhou
- Advanced Photon Source, Argonne National Laboratory, Lemont, IL, 60439, USA
| | - Yimin A. Wu
- Department of Mechanical and Mechatronics Engineering, and Waterloo Institute for Nanotechnology, University of Waterloo, ON, N2L 3G1, Canada
| | - Chengjun Sun
- Advanced Photon Source, Argonne National Laboratory, Lemont, IL, 60439, USA
| | - Yue Peng
- State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing 100084, China
| | - Junhua Li
- State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing 100084, China
| |
Collapse
|
13
|
González-Morán S, González B, Vicente MA, Trujillano R, Rives V, Gil A, Korili SA. Application of birnessite-type solids prepared by sol-gel and oxidation methods in photocatalytic degradation of 4-nitrophenol. ENVIRONMENTAL TECHNOLOGY 2022; 43:402-410. [PMID: 32619385 DOI: 10.1080/09593330.2020.1791968] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/29/2020] [Accepted: 06/23/2020] [Indexed: 06/11/2023]
Abstract
Potassium birnessites were prepared using two methods, sol-gel or oxidation. The solids were characterised by element chemical analysis, powder X-ray diffraction, FT-IR spectroscopy, thermal analyses, and nitrogen adsorption. The evolution of the properties as a function of the preparation method was discussed. The photocatalytic performance of these solids was preliminarily tested for the degradation of 4-nitrophenol. The degradation pathway and the nature of the by-products were investigated by mass spectrometry. The solids showed good catalytic behaviour, although their preparation must be improved, mainly concerning the calcination step involved in sol-gel synthesis, which led to the formation of Mn2O3 that worsened the catalytic behaviour.
Collapse
Affiliation(s)
- S González-Morán
- GIR QUESCAT-Departamento de Química Inorgánica, Universidad de Salamanca, Salamanca, Spain
| | - B González
- GIR QUESCAT-Departamento de Química Inorgánica, Universidad de Salamanca, Salamanca, Spain
| | - M A Vicente
- GIR QUESCAT-Departamento de Química Inorgánica, Universidad de Salamanca, Salamanca, Spain
| | - R Trujillano
- GIR QUESCAT-Departamento de Química Inorgánica, Universidad de Salamanca, Salamanca, Spain
| | - V Rives
- GIR QUESCAT-Departamento de Química Inorgánica, Universidad de Salamanca, Salamanca, Spain
| | - A Gil
- INAMAT-Departamento de Ciencias, Universidad Pública de Navarra, Pamplona, Spain
| | - S A Korili
- INAMAT-Departamento de Ciencias, Universidad Pública de Navarra, Pamplona, Spain
| |
Collapse
|
14
|
Dong N, Ye Q, Xiao Y, Zhang D, Dai H. Enhancement in catalytic performance of birnessite-type MnO2-supported Pd nanoparticles by the promotional role of reduced graphene oxide for toluene oxidation. Catal Sci Technol 2022. [DOI: 10.1039/d1cy02267a] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The birnessite-type MnO2 (δ-MnO2) supported reduced graphene oxide (rGO)-promoted palladium (xPdyrGO/δ-MnO2) samples were prepared using the polyvinyl alcohol-protected reduction method. Physicochemical properties of the catalysts were determined by means of...
Collapse
|
15
|
Tran GS, Vo TG, Chiang CY. Earth-abundant manganese oxide nanoneedle as highly efficient electrocatalyst for selective glycerol electro-oxidation to dihydroxyacetone. J Catal 2021. [DOI: 10.1016/j.jcat.2021.09.005] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
|
16
|
Song H, Xu L, Chen M, Cui Y, Wu CE, Qiu J, Xu L, Cheng G, Hu X. Recent progresses in the synthesis of MnO 2 nanowire and its application in environmental catalysis. RSC Adv 2021; 11:35494-35513. [PMID: 35493136 PMCID: PMC9043261 DOI: 10.1039/d1ra06497e] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2021] [Accepted: 10/27/2021] [Indexed: 12/27/2022] Open
Abstract
Nanostructured MnO2 with various morphologies exhibits excellent performance in environmental catalysis owing to its large specific surface area, low density, and adjustable chemical properties. The one-dimensional MnO2 nanowire has been proved to be the dominant morphology among various nanostructures, such as nanorods, nanofibers, nanoflowers, etc. The syntheses and applications of MnO2-based nanowires also have become a research hotspot in environmental catalytic materials over the last two decades. With the continuous deepening of the research, the control of morphology and crystal facet exposure in the synthesis of MnO2 nanowire materials have gradually matured, and the catalytic performance also has been greatly improved. Differences in the crystalline phase structure, preferably exposed crystal facets, and even the length of the MnO2 nanowires will evidently affect the final catalytic performances. Besides, the modifications by doping or loading will also significantly affect their catalytic performances. This review carefully summarizes the synthesis strategies of MnO2 nanowires developed in recent years as well as the influences of the phase structure, crystal facet, morphology, dopant, and loading amount on the catalytic performance. Besides, the cutting-edge applications of MnO2 nanowires in the field of environmental catalysis, such as CO oxidation, the removal of VOCs, denitrification, etc., have been also summarized. The application of MnO2 nanowire in environmental catalysis is still in the early exploratory stage. The gigantic gap between theoretical investigation and industrial application is still a great challenge. Compared with noble metal based traditional environmental catalytic materials, the lower cost of MnO2 has injected new momentum and promising potential into this research field.
Collapse
Affiliation(s)
- Huikang Song
- Collaborative Innovation Centre of the Atmospheric Environment and Equipment Technology, School of Environmental Science and Engineering, Nanjing University of Information Science & Technology, Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control Nanjing 210044 P. R. China
| | - Leilei Xu
- Collaborative Innovation Centre of the Atmospheric Environment and Equipment Technology, School of Environmental Science and Engineering, Nanjing University of Information Science & Technology, Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control Nanjing 210044 P. R. China
| | - Mindong Chen
- Collaborative Innovation Centre of the Atmospheric Environment and Equipment Technology, School of Environmental Science and Engineering, Nanjing University of Information Science & Technology, Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control Nanjing 210044 P. R. China
| | - Yan Cui
- Collaborative Innovation Centre of the Atmospheric Environment and Equipment Technology, School of Environmental Science and Engineering, Nanjing University of Information Science & Technology, Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control Nanjing 210044 P. R. China
| | - Cai-E Wu
- College of Light Industry and Food Engineering, Nanjing Forestry University Nanjing 210037 P. R. China
| | - Jian Qiu
- Jiangsu ShuangLiang Environmental Technology Co., Ltd Jiangyin 214400 P. R. China
| | - Liang Xu
- Jiangsu ShuangLiang Environmental Technology Co., Ltd Jiangyin 214400 P. R. China
| | - Ge Cheng
- Collaborative Innovation Centre of the Atmospheric Environment and Equipment Technology, School of Environmental Science and Engineering, Nanjing University of Information Science & Technology, Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control Nanjing 210044 P. R. China
| | - Xun Hu
- School of Material Science and Engineering, University of Jinan Jinan 250022 P. R. China
| |
Collapse
|
17
|
Dong C, Wang H, Ren Y, Qu Z. Effect of alkaline earth metal promoter on catalytic activity of MnO 2 for the complete oxidation of toluene. J Environ Sci (China) 2021; 104:102-112. [PMID: 33985713 DOI: 10.1016/j.jes.2020.11.003] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2020] [Revised: 11/17/2020] [Accepted: 11/21/2020] [Indexed: 06/12/2023]
Abstract
Herein, Na+ and Ca2+ are introduced to MnO2 through cation-exchange method. The presence of Na+ and Ca2+ significantly enhance the catalytic activity of MnO2 in toluene oxidation. Among them, the Ca-MnO2 catalyst exhibits the best catalytic activity (T50 = 194°C, T90 = 215°C, Ea = 57.2 kJ/mol, reaction rate 8.40 × 10-10 mol/(sec⋅m2) at 210°C. T50 and T90: the temperature of 50% and 90% toluene conversion; Ea: apparent activation energy) and possess high tolerance against 2.0 vol.% water vapor. Results reveal that the increased acidic sites of the MnO2 sample can enhance the adsorption of gaseous toluene, and the mobility of oxygen species and the content of reactive oxygen species in the catalyst are significantly improved due to the formed oxygen vacancy. Thus these two factors result in excellent catalytic performance for toluene oxidation combining with the weak CO2 adsorption ability.
Collapse
Affiliation(s)
- Cui Dong
- Key Laboratory of Industrial Ecology and Environmental Engineering, School of Environmental Science and Technology, Dalian University of Technology, Dalian 116024, China
| | - Hui Wang
- Key Laboratory of Industrial Ecology and Environmental Engineering, School of Environmental Science and Technology, Dalian University of Technology, Dalian 116024, China
| | - Yewei Ren
- Key Laboratory of Industrial Ecology and Environmental Engineering, School of Environmental Science and Technology, Dalian University of Technology, Dalian 116024, China
| | - Zhenping Qu
- Key Laboratory of Industrial Ecology and Environmental Engineering, School of Environmental Science and Technology, Dalian University of Technology, Dalian 116024, China.
| |
Collapse
|
18
|
Performance of ion intercalation materials in capacitive deionization/electrochemical deionization: A review. J Electroanal Chem (Lausanne) 2020. [DOI: 10.1016/j.jelechem.2020.114588] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
|
19
|
Liu Y, Gao W, Zhou H, Yi X, Bao Y. Highly reactive bulk lattice oxygen exposed by simple water treatment of LiCoO2 for catalytic oxidation of airborne benzene. MOLECULAR CATALYSIS 2020. [DOI: 10.1016/j.mcat.2020.111003] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
|
20
|
Dong C, Qu Z, Jiang X, Ren Y. Tuning oxygen vacancy concentration of MnO 2 through metal doping for improved toluene oxidation. JOURNAL OF HAZARDOUS MATERIALS 2020; 391:122181. [PMID: 32036307 DOI: 10.1016/j.jhazmat.2020.122181] [Citation(s) in RCA: 62] [Impact Index Per Article: 15.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/30/2019] [Revised: 12/31/2019] [Accepted: 01/22/2020] [Indexed: 06/10/2023]
Abstract
Oxygen vacancy acts an important role in adjusting the chemical properties of MnO2. In this paper, two-dimensional MnO2 catalysts with different oxygen vacancy concentration are obtained by doping Cu2+. It is researched that the K+ species in the interlayer of birnessite-type MnO2 can be substituted during the Cu2+ doping process. Meanwhile, this process will generate the oxygen vacancy. Interestingly, the formation of an appropriate numbers of oxygen vacancy in MnO2 distinctly enhances the low-temperature reducibility and oxygen species activity, which improves the catalytic activity for the toluene oxidation (T100 = 220 °C, Ea=43.6 kJ/mol). However, an excessive concentration of oxygen vacancy in MnO2 sample performs against the activity improvement for toluene oxidation. In situ DRIFTS are applied to elucidate the main intermediates and conversion pathway on MnO2-OV3 with moderate concentration of oxygen vacancy. The results demonstrate that the adsorbed toluene can interact with oxygen species of catalyst to form physisorbed benzaldehyde, aldehydic adsorbate and benzoate species. In addition, it is found that the oxygen vacancy concentration plays an important effect on the oxidation of benzoate species owing to the acceleration effect of oxygen vacancy in the activation of gaseous oxygen.
Collapse
Affiliation(s)
- Cui Dong
- Key Laboratory of Industrial Ecology and Environmental Engineering (MOE), School of Environmental Science and Technology, Dalian University of Technology, Linggong Road 2, Dalian, 116024, China
| | - Zhenping Qu
- Key Laboratory of Industrial Ecology and Environmental Engineering (MOE), School of Environmental Science and Technology, Dalian University of Technology, Linggong Road 2, Dalian, 116024, China.
| | - Xiao Jiang
- Key Laboratory of Industrial Ecology and Environmental Engineering (MOE), School of Environmental Science and Technology, Dalian University of Technology, Linggong Road 2, Dalian, 116024, China
| | - Yewei Ren
- Key Laboratory of Industrial Ecology and Environmental Engineering (MOE), School of Environmental Science and Technology, Dalian University of Technology, Linggong Road 2, Dalian, 116024, China
| |
Collapse
|
21
|
Luo Z, Tian S, Wang Z. Enhanced Activity of Cu/ZnO/C Catalysts Prepared by Cold Plasma for CO2 Hydrogenation to Methanol. Ind Eng Chem Res 2020. [DOI: 10.1021/acs.iecr.9b06996] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Affiliation(s)
- Zhao Luo
- State Key Laboratory of Chemical Engineering, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China
| | - Shoushuai Tian
- State Key Laboratory of Chemical Engineering, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China
| | - Zhao Wang
- State Key Laboratory of Chemical Engineering, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China
| |
Collapse
|
22
|
Su J, Cheng C, Guo Y, Xu H, Ke Q. OMS-2-based catalysts with controllable hierarchical morphologies for highly efficient catalytic oxidation of formaldehyde. JOURNAL OF HAZARDOUS MATERIALS 2019; 380:120890. [PMID: 31325698 DOI: 10.1016/j.jhazmat.2019.120890] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/23/2019] [Revised: 06/05/2019] [Accepted: 07/11/2019] [Indexed: 06/10/2023]
Abstract
Cryptomelane-type octahedral molecular sieve (OMS-2) catalysts are currently attracting tremendous attention due to their low-cost and remarkable thermo-catalytic activity. However, it is still difficult for OMS-2 catalysts to completely degrade formaldehyde at relatively low or even ambient temperature. In this work, OMS-2 catalysts with different ratios of length to diameter were prepared and the OMS-2-s with the minim ratio of length to diameter (1-3) exhibited the best catalytic performance than the other samples. Then, the optimized OMS-2-s nanorods were loaded on the SiO2 nanofibers via a simultaneous electrospining-spray strategy. The evaluation for the dynamic catalytic activities of the samples showed that, the T50 (HCHO conversion reached to 50%) for the OMS-2/SiO2 nanofibrous membranes was decreased by 24 °C than the OMS-2-s nanorods. Furthermore, in the static experiment of HCHO decomposition, the composite membrane could achieve a catalytic efficiency of 52.3% at 25 °C, much higher than that of the OMS-2-s nanorods (45.9%). This work offers a new strategy to improve the catalytic efficiency of OMS-2 by controlling the morphology and loading of OMS-2 nanorods, and also designs a kind of advanced nano OMS-2-based nanofibrous membranes with hierarchical nanostructures for the highly efficient formaldehyde elimination during the practical application.
Collapse
Affiliation(s)
- Jiafei Su
- College of Life and Environmental Sciences, Shanghai Normal University, No. 100 Guilin Road, Shanghai 200234, China
| | - Cuilian Cheng
- College of Life and Environmental Sciences, Shanghai Normal University, No. 100 Guilin Road, Shanghai 200234, China
| | - Yaping Guo
- College of Life and Environmental Sciences, Shanghai Normal University, No. 100 Guilin Road, Shanghai 200234, China
| | - He Xu
- College of Life and Environmental Sciences, Shanghai Normal University, No. 100 Guilin Road, Shanghai 200234, China.
| | - Qinfei Ke
- College of Life and Environmental Sciences, Shanghai Normal University, No. 100 Guilin Road, Shanghai 200234, China.
| |
Collapse
|
23
|
Jiang W, Feng Y, Zeng Y, Yao Y, Gu L, Sun H, Ji W, Arandiyan H, Au CT. Establishing high-performance Au/cobalt oxide interfaces for low-temperature benzene combustion. J Catal 2019. [DOI: 10.1016/j.jcat.2019.05.012] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
|