1
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Shi Q, Yu T, de Vries J, Peterson BW, Ren Y, Wu R, Liu J, Busscher HJ, van der Mei HC. Nano-architectonics of Pt single-atoms and differently-sized nanoparticles supported by manganese-oxide nanosheets and impact on catalytic and anti-biofilm activities. J Colloid Interface Sci 2024; 672:224-235. [PMID: 38838630 DOI: 10.1016/j.jcis.2024.05.241] [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: 04/12/2024] [Revised: 05/30/2024] [Accepted: 05/31/2024] [Indexed: 06/07/2024]
Abstract
Hybrid-nanozymes are promising in various applications, but comprehensive comparison of hybrid-nanozymes composed of single-atoms or nanoparticles on the same support has never been made. Here, manganese-oxide nanosheets were loaded with Pt-single-atoms or differently-sized nanoparticles and their oxidase- and-peroxidase activities compared. High-resolution Transmission-Electron-Microscopy and corresponding Fast Fourier Transform imaging showed that Pt-nanoparticles (1.5 nm diameter) had no clear (111) crystal-planes, while larger nanoparticles had clear (111) crystal-planes. X-ray Photo-electron Spectroscopy demonstrated that unloaded nanosheets were composed of MnO2 with a high number of oxygen vacancies (Vo/Mn 0.4). Loading with 7.0 nm Pt-nanoparticles induced a change to Mn2O3, while loading with 1.5 nm nanoparticles increased the number of vacancies (Vo/Mn 1.2). Nanosheets loaded with 3.0 nm Pt-nanoparticles possessed similarly high catalytic activities as Pt-single-atoms. However, loading with 1.5 nm or 7.0 nm Pt-nanoparticles yielded lower catalytic activities. A model is proposed explaining the low catalytic activity of under- and over-sized Pt-nanoparticles as compared with intermediately-sized (3.0 nm) Pt-nanoparticles and single-atoms. Herewith, catalytic activities of hybrid-nanozymes composed of single-atoms and intermediately-sized nanoparticles are put a par, as confirmed here with respect to bacterial biofilm eradication. This conclusion facilitates a balanced choice between using Pt-single-atoms or nanoparticles in further development and application of hybrid-nanozymes.
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Affiliation(s)
- Qiaolan Shi
- Institute of Functional Nano & Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Soochow University, 199 Ren'ai Rd, Suzhou 215123, Jiangsu, PR China; University of Groningen and University Medical Center Groningen, Department of Biomaterials & Biomedical Technology, Antonius Deusinglaan 1, 9713 AV Groningen, the Netherlands
| | - Tianrong Yu
- Institute of Functional Nano & Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Soochow University, 199 Ren'ai Rd, Suzhou 215123, Jiangsu, PR China; University of Groningen and University Medical Center Groningen, Department of Biomaterials & Biomedical Technology, Antonius Deusinglaan 1, 9713 AV Groningen, the Netherlands
| | - Joop de Vries
- University of Groningen and University Medical Center Groningen, Department of Biomaterials & Biomedical Technology, Antonius Deusinglaan 1, 9713 AV Groningen, the Netherlands
| | - Brandon W Peterson
- University of Groningen and University Medical Center Groningen, Department of Biomaterials & Biomedical Technology, Antonius Deusinglaan 1, 9713 AV Groningen, the Netherlands
| | - Yijin Ren
- University of Groningen and University Medical Center of Groningen, Department of Orthodontics, Hanzeplein 1, 9700 RB, Groningen, the Netherlands
| | - Renfei Wu
- Institute of Functional Nano & Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Soochow University, 199 Ren'ai Rd, Suzhou 215123, Jiangsu, PR China; University of Groningen and University Medical Center Groningen, Department of Biomaterials & Biomedical Technology, Antonius Deusinglaan 1, 9713 AV Groningen, the Netherlands
| | - Jian Liu
- Institute of Functional Nano & Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Soochow University, 199 Ren'ai Rd, Suzhou 215123, Jiangsu, PR China.
| | - Henk J Busscher
- University of Groningen and University Medical Center Groningen, Department of Biomaterials & Biomedical Technology, Antonius Deusinglaan 1, 9713 AV Groningen, the Netherlands.
| | - Henny C van der Mei
- University of Groningen and University Medical Center Groningen, Department of Biomaterials & Biomedical Technology, Antonius Deusinglaan 1, 9713 AV Groningen, the Netherlands.
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2
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Zhong X, Qin Y, Liang C, Liang Z, Nong Y, Luo S, Guo Y, Yang Y, Wei L, Li J, Zhang M, Tang S, Liang Y, Wu J, Lam YM, Su Z. Smartphone-Assisted Nanozyme Colorimetric Sensor Array Combined "Image Segmentation-Feature Extraction" Deep Learning for Detecting Unsaturated Fatty Acids. ACS Sens 2024. [PMID: 39298721 DOI: 10.1021/acssensors.4c01142] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/22/2024]
Abstract
Conventional methods for detecting unsaturated fatty acids (UFAs) pose challenges for rapid analyses due to the need for complex pretreatment and expensive instruments. Here, we developed an intelligent platform for facile and low-cost analysis of UFAs by combining a smartphone-assisted colorimetric sensor array (CSA) based on MnO2 nanozymes with "image segmentation-feature extraction" deep learning (ISFE-DL). Density functional theory predictions were validated by doping experiments using Ag, Pd, and Pt, which enhanced the catalytic activity of the MnO2 nanozymes. A CSA mimicking mammalian olfactory system was constructed with the principle that UFAs competitively inhibit the oxidization of the enzyme substrate, resulting in color changes in the nanozyme-ABTS substrate system. Through linear discriminant analysis coupled with the smartphone App "Quick Viewer" that utilizes multihole parallel acquisition technology, oleic acid (OA), linoleic acid (LA), α-linolenic acid (ALA), and their mixtures were clearly discriminated; various edible vegetable oils, different camellia oils (CAO), and adulterated CAOs were also successfully distinguished. Furthermore, the ISFE-DL method was combined in multicomponent quantitative analysis. The sensing elements of the CSA (3 × 4) were individually segmented for single-hole feature extraction containing information from 38,868 images of three UFAs, thereby allowing for the extraction of more features and augmenting sample size. After training with the MobileNetV3 small model, the determination coefficients of OA, LA, and ALA were 0.9969, 0.9668, and 0.7393, respectively. The model was embedded in the smartphone App "Intelligent Analysis Master" for one-click quantification. We provide an innovative approach for intelligent and efficient qualitative and quantitative analysis of UFAs and other compounds with similar characteristics.
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Affiliation(s)
- Xinyu Zhong
- Pharmaceutical College, Guangxi Medical University, Nanning 530021, China
| | - Yuelian Qin
- Pharmaceutical College, Guangxi Medical University, Nanning 530021, China
| | - Caihong Liang
- School of Materials Science and Engineering, Nanyang Technological University, Singapore 639798, Singapore
| | - Zhenwu Liang
- Pharmaceutical College, Guangxi Medical University, Nanning 530021, China
| | - Yunyuan Nong
- Pharmaceutical College, Guangxi Medical University, Nanning 530021, China
| | - Sanshan Luo
- Pharmaceutical College, Guangxi Medical University, Nanning 530021, China
| | - Yue Guo
- School of Pharmaceutical Sciences, Zhejiang Chinese Medical University, Hangzhou 310053, China
| | - Ying Yang
- Pharmaceutical College, Guangxi Medical University, Nanning 530021, China
| | - Liuyan Wei
- Pharmaceutical College, Guangxi Medical University, Nanning 530021, China
| | - Jinfeng Li
- Pharmaceutical College, Guangxi Medical University, Nanning 530021, China
| | - Meiling Zhang
- Pharmaceutical College, Guangxi Medical University, Nanning 530021, China
| | - Siqi Tang
- Pharmaceutical College, Guangxi Medical University, Nanning 530021, China
| | - Yonghong Liang
- Pharmaceutical College, Guangxi Medical University, Nanning 530021, China
| | - Jinxia Wu
- Pharmaceutical College, Guangxi Medical University, Nanning 530021, China
| | - Yeng Ming Lam
- School of Materials Science and Engineering, Nanyang Technological University, Singapore 639798, Singapore
- Facility for Analysis, Characterisation, Testing and Simulation (FACTS), Nanyang Technological University, Singapore 639798, Singapore
| | - Zhiheng Su
- Pharmaceutical College, Guangxi Medical University, Nanning 530021, China
- Guangxi Key Laboratory of Bioactive Molecules Research and Evaluation, Nanning 530021, China
- Guangxi Beibu Gulf Marine Biomedicine Precision Development and High-value Utilization Engineering Research Center, Nanning 530021, China
- Guangxi Health Commission Key Laboratory of Basic Research on Antigeriatric Drugs, Nanning 530021, China
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3
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Li T, Liu Y, Huang Y, Yu Z, Huang L. Aqueous Synthesis of Au 10Pt 1 Nanorods Decorated with MnO 2 Nanosheets for the Enhanced Electrocatalytic Oxidation of Methanol. Molecules 2024; 29:3753. [PMID: 39202832 PMCID: PMC11357038 DOI: 10.3390/molecules29163753] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2024] [Revised: 07/29/2024] [Accepted: 08/02/2024] [Indexed: 09/03/2024] Open
Abstract
Developing novel catalysts with high activity and high stability for the methanol oxidation reaction (MOR) is of great importance for the ever-broader applications of methanol fuel cells. Herein, we present a facile technique for synthesizing Au10Pt1@MnO2 catalysts using a wet chemical method and investigate their catalytic performance for the MOR. Notably, the Au10Pt1@MnO2-M composite demonstrated a significantly high peak mass activity of 15.52 A mg(Pt)-1, which is 35.3, 57.5, and 21.9 times greater than those of the Pt/C (0.44 A mg(Pt)-1), Pd/C (0.27 A mg(Pt)-1), and Au10Pt1 (0.71 A mg(Pt)-1) catalysts, respectively. Comparative analysis with commercial Pt/C and Pd/C catalysts, as well as Au10Pt1 HSNRs, revealed that the Au10Pt1@MnO2-M composite exhibited the lowest initial potential, the highest peak current density, and superior CO anti-poisoning capability. The results demonstrate that the introduction of MnO2 nanosheets, with excellent oxidation capability, not only significantly increases the reactive sites, but also promotes the reaction kinetics of the catalyst. Furthermore, the high surface area of the MnO2 nanosheets facilitates charge transfer and induces modifications in the electronic structure of the composite. This research provides a straightforward and effective strategy for the design of efficient electrocatalytic nanostructures for MOR applications.
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Affiliation(s)
- Ting Li
- Jiangxi Province Key Laboratory of Applied Optical Technology (2024SSY03051), School of Physical Science and Intelligent Education, Shangrao Normal University, Shangrao 334001, China
| | - Yidan Liu
- International Institute of Silk, College of Textile Science and Engineering, Zhejiang Sci-Tech University, Hangzhou 310018, China
| | - Yibin Huang
- Jiangxi Province Key Laboratory of Applied Optical Technology (2024SSY03051), School of Physical Science and Intelligent Education, Shangrao Normal University, Shangrao 334001, China
| | - Zhong Yu
- Jiangxi Province Key Laboratory of Applied Optical Technology (2024SSY03051), School of Physical Science and Intelligent Education, Shangrao Normal University, Shangrao 334001, China
| | - Lei Huang
- Research Center of Nano Science and Technology, College of Sciences, Shanghai University, Shanghai 200444, China
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4
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Zhu TT, Zhao Y, Li QK, Gao SS, Chi CL, Tang SL, Chen XB. High-Throughput Screening Strategy for Electrocatalysts for Selective Catalytic Oxidation of Formaldehyde to Formic Acid. J Phys Chem Lett 2024; 15:6183-6189. [PMID: 38836642 DOI: 10.1021/acs.jpclett.4c01081] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/06/2024]
Abstract
Electrocatalytic oxidation of formaldehyde (FOR) is an effective way to prevent the damage caused by formaldehyde and produce high-value products. A screening strategy of a single-layer MnO2-supported transition metal catalyst for the selective oxidation of formaldehyde to formic acid was designed by high-throughput density functional calculation. N-MnO2@Cu and MnO2@Cu are predicted to be potential FOR electrocatalysts with potential-limiting steps (PDS) of 0.008 and -0.009 eV, respectively. Electronic structure analysis of single-atom catalysts (SACs) shows that single-layer MnO2 can regulate the spin density of loaded transition metal and thus regulate the adsorption of HCHO (Ead), and Ead is volcanically distributed with the magnetic moment descriptor -|mM - mH|. In addition, the formula quantifies Ead and |mM - mH| to construct a volcano-type descriptor α describing the PDS [ΔG(*CHO)]. Other electronic and structural properties of SACs and α are used as input features for the GBR method to construct machine learning models predicting the PDS (R2 = 0.97). This study hopes to provide some insights into FOR electrocatalysts.
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Affiliation(s)
| | - Ying Zhao
- Shandong Laboratory of Advanced Materials and Green Manufacturing at Yantai, Yantai 264000, P. R. China
| | - Qing-Kai Li
- Shandong Laboratory of Advanced Materials and Green Manufacturing at Yantai, Yantai 264000, P. R. China
| | - Shuai-Shuai Gao
- Shandong Laboratory of Advanced Materials and Green Manufacturing at Yantai, Yantai 264000, P. R. China
| | - Chun-Lei Chi
- Shandong Laboratory of Advanced Materials and Green Manufacturing at Yantai, Yantai 264000, P. R. China
| | - Shuang-Ling Tang
- School of Environmental and Biological Engineering, Nanjing University of Science and Technology, Nanjing, Jiangsu 210094, P. R. China
| | - Xue-Bo Chen
- Shandong Laboratory of Advanced Materials and Green Manufacturing at Yantai, Yantai 264000, P. R. China
- College of Chemistry, Beijing Normal University, Beijing 100091, P. R. China
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5
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Duan C, Zhou Y, Meng M, Huang H, Ding H, Zhang Q, Huang R, Yan M. Research on the elimination of low-concentration formaldehyde by Ag loaded onto Mn/CeO 2 catalyst at room temperature. Phys Chem Chem Phys 2023; 25:24495-24507. [PMID: 37655797 DOI: 10.1039/d3cp01612a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/02/2023]
Abstract
Formaldehyde (HCHO) is one of the major air pollutants, and its effective removal at room temperature has proven to be a great challenge. In this study, an Ag/Mn/CeO2 catalyst for the catalytic oxidation of low-concentration HCHO at room temperature was prepared by a hydrothermal-calcination method. The removal performance of the Ag/Mn/CeO2 catalyst for HCHO was systematically studied, and its surface chemical properties and microstructure were analyzed. The incorporation of Ag did not change the mesoporous structure of the Mn/CeO2 catalyst but reduced the pore size and specific surface area. The Ag species included metallic Ag as the main component and part of Ag+. The well-dispersed Ag species on the catalyst provided sufficient active sites for the catalytic oxidation of HCHO. The more the Ag active sites, the more the lattice defects and oxygen vacancies generated from the interaction of Ag with Mn/CeO2. Precisely because of this, the Ag/Mn/CeO2 catalyst exhibited high catalytic activity for HCHO at room temperature with a removal efficiency of 96.76% within 22 h, which is 22.91% higher than that of the Mn/CeO2 catalyst. Moreover, the Ag/Mn/CeO2 catalyst showed good cycling stability and the removal efficiency reached 85.77% after five cycles. Therefore, the as-prepared catalyst is an effective and sustainable material that can be used to remove HCHO from actual indoor polluted air. This paper provides ideas for the research and development of efficient catalysts.
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Affiliation(s)
- Chaomin Duan
- College of Environment and Resources, Guangxi Normal University, Guilin, Guangxi 541004, China
| | - Yanlin Zhou
- College of Environment and Resources, Guangxi Normal University, Guilin, Guangxi 541004, China
| | - Mianwu Meng
- Key Laboratory of Ecology of Rare and Endangered Species and Environmental Protection, Ministry of Education, Guilin, Guangxi 541004, China.
- College of Environment and Resources, Guangxi Normal University, Guilin, Guangxi 541004, China
| | - Huang Huang
- Guilin Huayue Entech Limited Company, Guilin, Guangxi 541805, China.
| | - Hua Ding
- College of Environment and Resources, Guangxi Normal University, Guilin, Guangxi 541004, China
| | - Qi Zhang
- College of Environment and Resources, Guangxi Normal University, Guilin, Guangxi 541004, China
| | - Renyuan Huang
- College of Environment and Resources, Guangxi Normal University, Guilin, Guangxi 541004, China
| | - Mengjuan Yan
- College of Environment and Resources, Guangxi Normal University, Guilin, Guangxi 541004, China
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6
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Wei H, Li L, Zhang T, Seidi F, Xiao H. Platinum-loaded dendritic mesoporous silica as novel ethylene scavenger to extend shelf life of banana (Musa nana). Food Chem 2023; 424:136415. [PMID: 37257279 DOI: 10.1016/j.foodchem.2023.136415] [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: 02/08/2023] [Revised: 05/15/2023] [Accepted: 05/16/2023] [Indexed: 06/02/2023]
Abstract
Ethylene, released from fruits and vegetables (F&V) after harvest and during storage, often accelerates the ripening or over-ripening and may be caused decay, leading to substantial economic loss. Dendritic mesoporous silica supported (DMS) platinum (Pt/DMS) catalyst as ethylene scavenger was prepared and various characterization results indicated that the as-prepared Pt/DMS with ultra-low Pt loading exhibited excellent ethylene scavenging performance, which could maintain the complete ethylene conversion (100%) over 50 h at 25 °C and even 0 °C for 100 min with superior consecutive cycles by repeating the use of Pt/DMS. The presence of Pt/DMS delayed banana softening, and browning, reduced weight loss and kept the freshness for 14 days. In conclusion, the active packaging incorporated with Pt/DMS catalysts with high ethylene scavenging efficiency is expected to be extremely beneficial to the post-harvest storage life of other fruits and vegetables that needs further related investigation.
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Affiliation(s)
- Haiying Wei
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources and International Innovation Center for Forest Chemicals and Materials, Nanjing Forestry University, Nanjing 210037, China; Department of Chemical Engineering, University of New Brunswick, Fredericton, NB E3B 5A3, Canada
| | - Licheng Li
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources and International Innovation Center for Forest Chemicals and Materials, Nanjing Forestry University, Nanjing 210037, China
| | - Tingwei Zhang
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources and International Innovation Center for Forest Chemicals and Materials, Nanjing Forestry University, Nanjing 210037, China
| | - Farzad Seidi
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources and International Innovation Center for Forest Chemicals and Materials, Nanjing Forestry University, Nanjing 210037, China
| | - Huining Xiao
- Department of Chemical Engineering, University of New Brunswick, Fredericton, NB E3B 5A3, Canada.
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7
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Wang Y, Dai J, Wang M, Qi F, Jin X, Zhang L. Enhanced toluene oxidation by photothermal synergetic catalysis on manganese oxide embedded with Pt single-atoms. J Colloid Interface Sci 2023; 636:577-587. [PMID: 36669451 DOI: 10.1016/j.jcis.2023.01.053] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2022] [Revised: 01/11/2023] [Accepted: 01/11/2023] [Indexed: 01/15/2023]
Abstract
The degradation of volatile organic compounds (VOCs) at low temperature remains a big challenge. Photothermal catalysis coupling the advantages of photocatalysis and thermocatalysis is promising to address this issue. However, there is still a long way to construct highly active catalysts and deeply understand the mechanism of photothermal catalysis. Herein, maganese oxide (MnO2)catalysts embedded with Pt single-atoms (0.11 wt% Pt) have achieved greatly enhanced toluene conversion of 95%, far surpassing most supported Pt photothermal catalysts. The excellent catalytic activity has been disclosed to derive from the synergetic effect oflight-driven thermocatalysis and photocatalysis. The light-driven thermocatalysis predominates and the strong electron transfer from Pt single-atoms to MnO2 improves the activity of surface lattice oxygen to boost the generation of benzoic acid and the mineralization of toluene. Meanwhile, in photocatalytic process, Pt single-atoms accelerate the generation of superoxide radicals (O2-), which facilitate the ring-opening and deep oxidation of toluene. This understanding on the photothermal synergetic mechanism will inspire the design of highly efficient catalysts for VOCs oxidation.
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Affiliation(s)
- Yang Wang
- State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, 1295 Ding-xi Road, Shanghai 200050, PR China; Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, 19A Yuquan Road, Beijing 100049, PR China
| | - Jinyu Dai
- State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, 1295 Ding-xi Road, Shanghai 200050, PR China
| | - Min Wang
- State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, 1295 Ding-xi Road, Shanghai 200050, PR China; Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, 19A Yuquan Road, Beijing 100049, PR China
| | - Fenggang Qi
- State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, 1295 Ding-xi Road, Shanghai 200050, PR China; Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, 19A Yuquan Road, Beijing 100049, PR China
| | - Xixiong Jin
- State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, 1295 Ding-xi Road, Shanghai 200050, PR China; Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, 19A Yuquan Road, Beijing 100049, PR China
| | - Lingxia Zhang
- State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, 1295 Ding-xi Road, Shanghai 200050, PR China; Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, 19A Yuquan Road, Beijing 100049, PR China; School of Chemistry and Materials Science, Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, Hangzhou 310024, PR China.
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8
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Semagina N, Tam R, Sawada J. Kinetics of low‐temperature catalytic combustion of ethylene at wet conditions for postharvest storage applications. AIChE J 2022. [DOI: 10.1002/aic.17718] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Natalia Semagina
- Department of Chemical and Materials Engineering University of Alberta Edmonton Alberta Canada
| | - Rosanne Tam
- Department of Chemical and Materials Engineering University of Alberta Edmonton Alberta Canada
| | - James Sawada
- Climacteric Controls Solutions, Inc. Edmonton Alberta Canada
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9
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Mei J, Shen Y, Li Y, Zhang S, Shen Y, Li W, Cheng Z, Zhao J, Chen J. Combined experimental and theoretical study of o-xylene elimination on Fe-Mn oxides catalysts. CHEMOSPHERE 2022; 292:133442. [PMID: 34971626 DOI: 10.1016/j.chemosphere.2021.133442] [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: 09/12/2021] [Revised: 12/01/2021] [Accepted: 12/23/2021] [Indexed: 06/14/2023]
Abstract
The development of low-cost and easily accessible catalysts to realize the practical applications of catalytic combustion of volatile organic compounds remains a challenge. In this work, a series of Fe-Mn oxides catalysts were prepared via a facile redox-precipitation route for the elimination of o-xylene. Among the synthesized catalysts, Fe3Mn1-RP exhibited excellent activity for o-xylene elimination with a T50 and T90 of 223 °C and 236 °C, respectively (o-xylene concentration = 500 ppm, WHSV = 36,000 mL g-1 h-1). Characterization results demonstrated that superior catalytic activity could be achieved from large specific surface area, good reducibility and high proportion of Mn4+. Besides, high Fe contents proved beneficial in generating additional oxygen vacancies, thereby improving the performance of the catalyst. The stable crystal structures and surface electron density distributions of the catalysts, and adsorption sites of o-xylene on the catalyst surface, were also determined through density functional theory (DFT) calculations to provide an in-depth mechanism on how the o-xylene oxidation occurred. Moreover, analysis of the energy barrier during the oxidation process proved that the ring-opening reaction on the surface of Fe3Mn1-RP with an activation energy as low as 2.46 eV would more likely occur via oxygen vacancies.
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Affiliation(s)
- Ji Mei
- College of Geography and Environmental Sciences, Zhejiang Normal University, Jinhua, 321004, China
| | - Yao Shen
- Key Laboratory of Microbial Technology for Industrial Pollution Control of Zhejiang Province, College of Environment, Zhejiang University of Technology, Hangzhou, 310014, China; Key Laboratory of Biomass Chemical Engineering of Ministry of Education, Institute of Industrial Ecology and Environment, College of Chemical and Biological Engineering, Zhejiang University, Yuquan Campus, Hangzhou, 310027, China
| | - Yuanming Li
- College of Geography and Environmental Sciences, Zhejiang Normal University, Jinhua, 321004, China
| | - Shihan Zhang
- Key Laboratory of Microbial Technology for Industrial Pollution Control of Zhejiang Province, College of Environment, Zhejiang University of Technology, Hangzhou, 310014, China
| | - Yi Shen
- Key Laboratory of Microbial Technology for Industrial Pollution Control of Zhejiang Province, College of Environment, Zhejiang University of Technology, Hangzhou, 310014, China
| | - Wei Li
- Key Laboratory of Biomass Chemical Engineering of Ministry of Education, Institute of Industrial Ecology and Environment, College of Chemical and Biological Engineering, Zhejiang University, Yuquan Campus, Hangzhou, 310027, China
| | - Zhuowei Cheng
- Key Laboratory of Microbial Technology for Industrial Pollution Control of Zhejiang Province, College of Environment, Zhejiang University of Technology, Hangzhou, 310014, China
| | - Jingkai Zhao
- Key Laboratory of Microbial Technology for Industrial Pollution Control of Zhejiang Province, College of Environment, Zhejiang University of Technology, Hangzhou, 310014, China.
| | - Jianrong Chen
- College of Geography and Environmental Sciences, Zhejiang Normal University, Jinhua, 321004, China.
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10
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Mori T, Shigyo T, Nomura T, Osanai Y, Nakajima K, Fukuoka A. Ethylene oxidation activity of silica-supported platinum catalysts for the preservation of perishables. Catal Sci Technol 2022. [DOI: 10.1039/d2cy00335j] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Silica-supported platinum catalysts can remove trace amounts of ethylene from perishables and extend their shelf-lives.
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Affiliation(s)
- Takeshi Mori
- Industrial Research Institute, Hokkaido Research Organization, Kita 19 Nishi 11, Kita-ku, Sapporo, Hokkaido 060-0819, Japan
| | - Tatsuhiro Shigyo
- Industrial Research Institute, Hokkaido Research Organization, Kita 19 Nishi 11, Kita-ku, Sapporo, Hokkaido 060-0819, Japan
| | - Takafumi Nomura
- Industrial Research Institute, Hokkaido Research Organization, Kita 19 Nishi 11, Kita-ku, Sapporo, Hokkaido 060-0819, Japan
| | - Yuki Osanai
- Institute for Catalysis, Hokkaido University, Kita 21 Nishi 10, Kita-ku, Sapporo, Hokkaido 001-0021, Japan
- Graduate School of Chemical Sciences and Engineering, Hokkaido University, Kita 13 Nishi 8, Kita-ku, Sapporo, Hokkaido 060-8628, Japan
| | - Kiyotaka Nakajima
- Institute for Catalysis, Hokkaido University, Kita 21 Nishi 10, Kita-ku, Sapporo, Hokkaido 001-0021, Japan
| | - Atsushi Fukuoka
- Institute for Catalysis, Hokkaido University, Kita 21 Nishi 10, Kita-ku, Sapporo, Hokkaido 001-0021, Japan
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11
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Li C, Yang H, Qi Y, Li H. Synergistic effect of metal oxidation states and surface acidity enhanced the trace ethylene adsorption of Ag/ZSM-5. NEW J CHEM 2022. [DOI: 10.1039/d2nj00373b] [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
The regulation of trace ethylene adsorption performance through changing zeolite Si/Al ratios improved the performance of zeolite-based adsorbents.
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Affiliation(s)
- Chunli Li
- National-Local Joint Engineering Laboratory for Energy Conservation in Chemical Process Integration and Resources Utilization, School of Chemical Engineering and Technology, Hebei University of Technology, Tianjin 300130, China
| | - Huaming Yang
- National-Local Joint Engineering Laboratory for Energy Conservation in Chemical Process Integration and Resources Utilization, School of Chemical Engineering and Technology, Hebei University of Technology, Tianjin 300130, China
| | - Ying Qi
- National-Local Joint Engineering Laboratory for Energy Conservation in Chemical Process Integration and Resources Utilization, School of Chemical Engineering and Technology, Hebei University of Technology, Tianjin 300130, China
| | - Hao Li
- National-Local Joint Engineering Laboratory for Energy Conservation in Chemical Process Integration and Resources Utilization, School of Chemical Engineering and Technology, Hebei University of Technology, Tianjin 300130, China
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12
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Lee S, Lin C, Kim S, Mao X, Kim T, Kim SJ, Gorte RJ, Jung W. Manganese Oxide Overlayers Promote CO Oxidation on Pt. ACS Catal 2021. [DOI: 10.1021/acscatal.1c04214] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
- Siwon Lee
- Department of Materials Science and Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Republic of Korea
- Department of Chemical and Biomolecular Engineering, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
| | - Chao Lin
- Department of Chemical and Biomolecular Engineering, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
| | - Seunghyun Kim
- Department of Materials Science and Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Republic of Korea
| | - Xinyu Mao
- Department of Chemical and Biomolecular Engineering, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
| | - Taeho Kim
- Center for Environment and Sustainable Resources, Korea Research Institute of Chemical Technology (KRICT), Daejeon 34114, Republic of Korea
- Department of Advanced Materials & Chemical Engineering, University of Science and Technology (UST), Daejeon 34113, Republic of Korea
| | - Sang-Joon Kim
- Center for Environment and Sustainable Resources, Korea Research Institute of Chemical Technology (KRICT), Daejeon 34114, Republic of Korea
- Department of Advanced Materials & Chemical Engineering, University of Science and Technology (UST), Daejeon 34113, Republic of Korea
| | - Raymond J. Gorte
- Department of Chemical and Biomolecular Engineering, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
| | - WooChul Jung
- Department of Materials Science and Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Republic of Korea
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13
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Wang Y, He J, Li X, Wang M, Zhou Y, Xiao J, Chen D, Lu J. Low Temperature Combustion of VOCs with Enhanced Catalytic Activity Over MnO 2 Nanotubes Loaded with Pt and Ni-Fe Spinel. ACS APPLIED MATERIALS & INTERFACES 2021; 13:46830-46839. [PMID: 34547206 DOI: 10.1021/acsami.1c15372] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
MnO2 nanotubes loaded with Pt and Ni-Fe spinel were synthesized using simple hydrothermal and sol-gel techniques. After loading with Ni-Fe spinel, the specific surface area of the material increases 3-fold. This change helped to provide more active sites and facilitated the association between the catalyst and volatile organic compounds (VOCs). X-ray photoelectron spectroscopy determined that the adsorbed oxygen concentrations were all greatly increased after Pt loading, indicating that Pt promoted the adsorption of oxygen and so accelerated the combustion process. The performance of the catalyst after loading with 2 wt % Pt was greatly improved, such that the T90 for benzene decomposition was decreased to 113 °C. In addition, the 2% Pt/2Mn@NFO exhibited excellent low-temperature catalytic activity when reacting with low concentrations of toluene and ethyl acetate. This work therefore demonstrates a viable new approach to the development of Mn-based catalysts for the low temperature catalytic remediation of VOCs.
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Affiliation(s)
- Yaru Wang
- College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University, Suzhou 215123, China
| | - Jiaqin He
- College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University, Suzhou 215123, China
| | - Xunxun Li
- College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University, Suzhou 215123, China
| | - Mengmeng Wang
- College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University, Suzhou 215123, China
| | - Yuanbo Zhou
- College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University, Suzhou 215123, China
| | - Jun Xiao
- College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University, Suzhou 215123, China
| | - Dongyun Chen
- College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University, Suzhou 215123, China
| | - Jianmei Lu
- College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University, Suzhou 215123, China
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14
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Qi Y, Li C, Li H, Yang H, Guan J. Elimination or Removal of Ethylene for Fruit and Vegetable Storage via Low-Temperature Catalytic Oxidation. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2021; 69:10419-10439. [PMID: 34463513 DOI: 10.1021/acs.jafc.1c02868] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Ethylene acts as an important hormone to trigger the ripening and senescence of fruits and vegetables (F&V). Thus, it is essential to eliminate trace ethylene and prevent F&V losses effectively. There are several technologies currently applying to control the ethylene concentration in the storage and transportation environment, including adsorption, gene modification, oxidation, etc. These protocols will be compared, and special attention will be paid to the low-temperature catalytic oxidation that has already been applied to practical production in this review. The active sites, supports, and reaction and deactivation mechanism of the catalysts for the low-temperature ethylene oxidation will be discussed and evaluated systematically to provide new insights for the development of effective catalysts, along with the suggestion of some perspectives for future research on this important catalytic system for F&V preservation.
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Affiliation(s)
- Ying Qi
- National-Local Joint Engineering Laboratory for Energy Conservation in Chemical Process Integration and Resources Utilization, Tianjin Key Laboratory of Chemical Process Safety, School of Chemical Engineering and Technology, Hebei University of Technology, Tianjin 300130, People's Republic of China
| | - Chunli Li
- National-Local Joint Engineering Laboratory for Energy Conservation in Chemical Process Integration and Resources Utilization, Tianjin Key Laboratory of Chemical Process Safety, School of Chemical Engineering and Technology, Hebei University of Technology, Tianjin 300130, People's Republic of China
| | - Hao Li
- National-Local Joint Engineering Laboratory for Energy Conservation in Chemical Process Integration and Resources Utilization, Tianjin Key Laboratory of Chemical Process Safety, School of Chemical Engineering and Technology, Hebei University of Technology, Tianjin 300130, People's Republic of China
| | - Huaming Yang
- National-Local Joint Engineering Laboratory for Energy Conservation in Chemical Process Integration and Resources Utilization, Tianjin Key Laboratory of Chemical Process Safety, School of Chemical Engineering and Technology, Hebei University of Technology, Tianjin 300130, People's Republic of China
| | - Junfeng Guan
- Institute of Genetics and Physiology, Hebei Academy of Agriculture and Forestry Sciences, Shijiazhuang, Hebei 050051, People's Republic of China
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15
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Ling J, Dong Y, Cao P, Wang Y, Li Y. Preparation of Mn-Fe Oxide by a Hydrolysis-Driven Redox Method and Its Application in Formaldehyde Oxidation. ACS OMEGA 2021; 6:23274-23280. [PMID: 34549127 PMCID: PMC8444290 DOI: 10.1021/acsomega.1c02994] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/08/2021] [Accepted: 08/18/2021] [Indexed: 06/13/2023]
Abstract
Homogeneous distribution of Mn-Fe oxides (xMn1Fe) with different Mn/Fe ratios was synthesized by a hydrolysis-driven redox method, and their catalytic activities in HCHO oxidation were investigated. The results showed that HCHO conversion was significantly improved after doping iron due to the synergistic effect between manganese and iron. The 5Mn1Fe catalyst exhibits excellent catalytic activity, achieving >90% HCHO conversion at 80 °C and nearly 100% conversion at 100 °C. The physicochemical properties of catalysts were characterized by BET, XRD, H2-TPR, O2-TPD, and XPS techniques. Experimental results revealed that the introduction of Fe into MnO x resulted in a large surface area, a high ratio of Mn4+, abundant lattice oxygen species and oxygen vacancy, and uniform distribution of Mn and Fe, thus facilitating the oxidation of HCHO to CO2 and H2O.
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Affiliation(s)
- Jie Ling
- College
of Coal and Chemical Industry, Shaanxi Energy
Institute, Hsienyang 712000, China
| | - Yaxin Dong
- College
of Chemistry and Chemical Engineering, Xi’an
Shiyou University, Xi’an 710065, China
| | - Pan Cao
- College
of Chemistry and Chemical Engineering, Xi’an
Shiyou University, Xi’an 710065, China
| | - Yixiang Wang
- College
of Chemistry and Chemical Engineering, Xi’an
Shiyou University, Xi’an 710065, China
| | - YingYing Li
- College
of Chemistry and Chemical Engineering, Xi’an
Shiyou University, Xi’an 710065, China
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16
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Li J, Wu L, Wang N, Li X, Cen C. Promotion of TiO 2 Nanotube-Confined Pt Nanoparticles via Surface Modification with Fe 2O 3 for Ethylene Oxidation at Low Temperature. ACS OMEGA 2021; 6:11529-11536. [PMID: 34056308 PMCID: PMC8153978 DOI: 10.1021/acsomega.1c00665] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/04/2021] [Accepted: 04/06/2021] [Indexed: 06/12/2023]
Abstract
A modified confined catalyst with Pt nanoparticles on the interior and Fe2O3 on the exterior surface of TiO2 nanotubes (Pt-in/Fe2O3-TNTs) was prepared and investigated for catalyzing the oxidation of ethylene. Compared with the Pt-in/TNTs without Fe2O3 modification, the Pt-in/Fe2O3-TNTs exhibited a significantly enhanced activity, and the complete conversion temperature of ethylene decreased from 170 to 95 °C. X-ray photoelectron spectroscopy analysis indicated that the Pt nanoparticles were stabilized at higher oxidation states in the Pt-in/Fe2O3-TNT catalyst. It was proposed that the modification of Fe2O3 on the outer surface can tune the electronic state of the encapsulated Pt particles and accelerate the electrons transferred from Pt to Fe species via TiO2 nanotubes, thus improving the catalytic oxidation performance of the confined catalyst.
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Affiliation(s)
- Juan Li
- Key
Laboratory of Renewable Energy, Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou 510640, China
| | - Liangpeng Wu
- Key
Laboratory of Renewable Energy, Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou 510640, China
| | - Nan Wang
- Key
Laboratory of Renewable Energy, Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou 510640, China
| | - Xinjun Li
- Key
Laboratory of Renewable Energy, Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou 510640, China
| | - Chaoping Cen
- South
China Institute of Environmental Science, Ministry of Environmental Protection, Guangzhou 510655, China
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17
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Sun Y, Fan J, Cheng H, Mo S, Ke Y, Ren Q, Fu M, Chen P, Wu J, Ye D. Investigation into the roles of different oxygen species in toluene oxidation over manganese-supported platinum catalysts. MOLECULAR CATALYSIS 2021. [DOI: 10.1016/j.mcat.2021.111569] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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18
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Cremonezzi JMDO, Tiba DY, Domingues SH. Fast synthesis of δ-MnO2 for a high-performance supercapacitor electrode. SN APPLIED SCIENCES 2020. [DOI: 10.1007/s42452-020-03488-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022] Open
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19
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Biogenic synthesis, antioxidant and antimicrobial activity of silver and manganese dioxide nanoparticles using Cussonia zuluensis Strey. CHEMICAL PAPERS 2020. [DOI: 10.1007/s11696-020-01244-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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20
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Cu doped MnO2/γ-Al2O3: a facile and efficient catalyst for the degradation of Na2S in waste water under ambient conditions. REACTION KINETICS MECHANISMS AND CATALYSIS 2020. [DOI: 10.1007/s11144-020-01755-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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21
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Husnain SM, Asim U, Yaqub A, Shahzad F, Abbas N. Recent trends of MnO2-derived adsorbents for water treatment: a review. NEW J CHEM 2020. [DOI: 10.1039/c9nj06392g] [Citation(s) in RCA: 45] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Over the years, manganese dioxide (MnO2) and its different allotropes have gained significant research attention in the field of wastewater treatment because of their exciting physicochemical properties.
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Affiliation(s)
- Syed M. Husnain
- Chemistry Division
- Directorate of Science
- Pakistan Institute of Nuclear Science and Technology (PINSTECH)
- Islamabad
- Pakistan
| | - Umar Asim
- Institute of Chemical Sciences
- Bahauddin Zakariya University
- Multan 60800
- Pakistan
| | - Azra Yaqub
- Chemistry Division
- Directorate of Science
- Pakistan Institute of Nuclear Science and Technology (PINSTECH)
- Islamabad
- Pakistan
| | - Faisal Shahzad
- National Center for Nanotechnology
- Department of Metallurgy and Materials Engineering
- Pakistan Institute of Engineering and Applied Sciences (PIEAS)
- Islamabad 45650
- Pakistan
| | - Naseem Abbas
- Institute of Chemical Sciences
- Bahauddin Zakariya University
- Multan 60800
- Pakistan
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22
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Lu S, Zhu Q, Dong Y, Zheng Y, Wang X, Li K, Huang F, Peng B, Chen Y. Influence of MnO2 Morphology on the Catalytic Performance of Ag/MnO2 for the HCHO Oxidation. CATALYSIS SURVEYS FROM ASIA 2019. [DOI: 10.1007/s10563-019-09272-6] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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23
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Chen JJ, Zhang T, Zhang MQ, Liu QY, Li XN, He SG. Size-Dependent Reactivity of Nano-Sized Neutral Manganese Oxide Clusters toward Ethylene. Chemistry 2017; 23:15820-15826. [PMID: 28925004 DOI: 10.1002/chem.201703745] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2017] [Indexed: 11/09/2022]
Abstract
Neutral manganese oxide clusters with the general composition Mn2 N O3 N+x (N=2-22; x=-1, 0, 1) with dimensions up to a nanosize were prepared by laser ablation and reacted with C2 H4 in a fast flow reactor. The size-dependent reactivity of C2 H4 adsorption on these clusters was experimentally identified and the adsorption reactivity decreases generally with an increase of the cluster size. Density functional theory calculations were performed to study the geometrical and electronic structures of the Mn2 N O3 N (N=1-6) clusters. The calculated results indicated that the coordination number and the charge distribution of the metal centers are responsible for the experimentally observed size-dependent reactivity. The highly charged Mn atoms with low coordination are preferential to adsorb C2 H4 . In contrast, the neutral manganese oxide clusters are completely inert toward the saturated hydrocarbon molecule C2 H6 . This work provides new perspectives to design related materials in the separation of hydrocarbon molecules.
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Affiliation(s)
- Jiao-Jiao Chen
- State Key Laboratory for Structural Chemistry of Unstable and Stable Species, CAS Research/Education Center of Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, P.R. China.,Beijing National Laboratory for Molecular Sciences, Beijing, 100190, P.R. China.,University of Chinese Academy of Sciences, Beijing, 100049, P.R. China
| | - Ting Zhang
- State Key Laboratory for Structural Chemistry of Unstable and Stable Species, CAS Research/Education Center of Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, P.R. China.,Beijing National Laboratory for Molecular Sciences, Beijing, 100190, P.R. China.,University of Chinese Academy of Sciences, Beijing, 100049, P.R. China
| | - Mei-Qi Zhang
- State Key Laboratory for Structural Chemistry of Unstable and Stable Species, CAS Research/Education Center of Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, P.R. China.,Beijing National Laboratory for Molecular Sciences, Beijing, 100190, P.R. China.,University of Chinese Academy of Sciences, Beijing, 100049, P.R. China
| | - Qing-Yu Liu
- State Key Laboratory for Structural Chemistry of Unstable and Stable Species, CAS Research/Education Center of Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, P.R. China.,Beijing National Laboratory for Molecular Sciences, Beijing, 100190, P.R. China
| | - Xiao-Na Li
- State Key Laboratory for Structural Chemistry of Unstable and Stable Species, CAS Research/Education Center of Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, P.R. China.,Beijing National Laboratory for Molecular Sciences, Beijing, 100190, P.R. China
| | - Sheng-Gui He
- State Key Laboratory for Structural Chemistry of Unstable and Stable Species, CAS Research/Education Center of Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, P.R. China.,Beijing National Laboratory for Molecular Sciences, Beijing, 100190, P.R. China.,University of Chinese Academy of Sciences, Beijing, 100049, P.R. China
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