1
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Cybulski O, Quintana C, Siek M, Grzybowski BA. Stirring-Controlled Synthesis of Ultrastable, Fluorescent Silver Nanoclusters. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024:e2400306. [PMID: 38934325 DOI: 10.1002/smll.202400306] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/13/2024] [Revised: 06/09/2024] [Indexed: 06/28/2024]
Abstract
This paper describes how macroscopic stirring of a reaction mixture can be used to produce nanostructures exhibiting properties not readily achievable via other protocols. In particular, it is shown that by simply adjusting the stirring rate, a standard glutathione-based method-to date, used to produce only marginally stable fluorescent silver nanoclusters, Ag NCs-can be boosted to yield nanoclusters retaining fluorescence for unprecedented periods of over 2 years. This enhancement derives not simply from increased homogenization of the reaction mixture but mainly from an appropriately timed delivery of oxygen from above the reaction mixture. In effect, oxygen serves as a reagent that dictates size, structure, stability, and functional properties of the growing nanoobjects.
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Affiliation(s)
- Olgierd Cybulski
- Center for Algorithmic and Robotized Synthesis (CARS), Institute for Basic Science (IBS), Ulsan, 44919, South Korea
| | - Cristóbal Quintana
- Center for Algorithmic and Robotized Synthesis (CARS), Institute for Basic Science (IBS), Ulsan, 44919, South Korea
| | - Marta Siek
- Center for Algorithmic and Robotized Synthesis (CARS), Institute for Basic Science (IBS), Ulsan, 44919, South Korea
| | - Bartosz A Grzybowski
- Center for Algorithmic and Robotized Synthesis (CARS), Institute for Basic Science (IBS), Ulsan, 44919, South Korea
- Department of Chemistry, Ulsan National Institute of Science and Technology (UNIST), Ulsan, 44919, South Korea
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2
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Li J, Li K, Li Z, Wang C, Liang Y, Pang Y, Ma J, Wang F, Ning P, He H. Capture of single Ag atoms through high-temperature-induced crystal plane reconstruction. Nat Commun 2024; 15:3874. [PMID: 38719826 PMCID: PMC11078991 DOI: 10.1038/s41467-024-47836-x] [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: 10/14/2023] [Accepted: 04/10/2024] [Indexed: 05/12/2024] Open
Abstract
The "terminal hydroxyl group anchoring mechanism" has been studied on metal oxides (Al2O3, CeO2) as well as a variety of noble and transition metals (Ag, Pt, Pd, Cu, Ni, Fe, Mn, and Co) in a number of generalized studies, but there is still a gap in how to regulate the content of terminal hydroxyl groups to influence the dispersion of the active species and thus to achieve optimal catalytic performance. Herein, we utilized AlOOH as a precursor for γ-Al2O3 and induced the transformation of the exposed crystal face of γ-Al2O3 from (110) to (100) by controlling the calcination temperature to generate more terminal hydroxyl groups to anchor Ag species. Experimental results combined with AIMD and DFT show that temperature can drive the atomic rearrangement on the (110) crystal face, thereby forming a structure similar to the atomic arrangement of the (100) crystal face. This resulted in the formation of more terminal hydroxyl groups during the high-temperature calcination of the support (Al-900), which can capture Ag species to form single-atom dispersions, and ultimately develop a stable and efficient single-atom Ag-based catalyst.
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Affiliation(s)
- Jiaxin Li
- Faculty of Environmental Science and Engineering, Kunming University of Science and Technology, 650500, Kunming, China
| | - Kai Li
- Faculty of Environmental Science and Engineering, Kunming University of Science and Technology, 650500, Kunming, China
- National-Regional Engineering Center for Recovery of Waste Gases from Metallurgical and Chemical Industries, 650500, Kunming, China
| | - Zhao Li
- Faculty of Environmental Science and Engineering, Kunming University of Science and Technology, 650500, Kunming, China
| | - Chunxue Wang
- Faculty of Environmental Science and Engineering, Kunming University of Science and Technology, 650500, Kunming, China
| | - Yifei Liang
- Faculty of Environmental Science and Engineering, Kunming University of Science and Technology, 650500, Kunming, China
| | - Yatong Pang
- Faculty of Environmental Science and Engineering, Kunming University of Science and Technology, 650500, Kunming, China
| | - Jinzhu Ma
- State Key Joint Laboratory of Environment Simulation and Pollution Control, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, 100085, Beijing, China.
- Center for Excellence in Regional Atmospheric Environment, Institute of Urban Environment, Chinese Academy of Sciences, 361021, Xiamen, China.
- University of Chinese Academy of Sciences, 100049, Beijing, China.
| | - Fei Wang
- Faculty of Environmental Science and Engineering, Kunming University of Science and Technology, 650500, Kunming, China.
- National-Regional Engineering Center for Recovery of Waste Gases from Metallurgical and Chemical Industries, 650500, Kunming, China.
| | - Ping Ning
- Faculty of Environmental Science and Engineering, Kunming University of Science and Technology, 650500, Kunming, China
- National-Regional Engineering Center for Recovery of Waste Gases from Metallurgical and Chemical Industries, 650500, Kunming, China
| | - Hong He
- State Key Joint Laboratory of Environment Simulation and Pollution Control, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, 100085, Beijing, China
- Center for Excellence in Regional Atmospheric Environment, Institute of Urban Environment, Chinese Academy of Sciences, 361021, Xiamen, China
- University of Chinese Academy of Sciences, 100049, Beijing, China
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3
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Yang H, Li G, Liu Q, Cheng H, Wang X, Cheng J, Jiang G, Zhang F, Zhang Z, Hao Z. Tailoring the Electronic Metal-Support Interactions in Supported Silver Catalysts through Al modification for Efficient Ethylene Epoxidation. Angew Chem Int Ed Engl 2024; 63:e202400627. [PMID: 38390644 DOI: 10.1002/anie.202400627] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2024] [Revised: 02/11/2024] [Accepted: 02/22/2024] [Indexed: 02/24/2024]
Abstract
Metal-modified catalysts have attracted extraordinary research attention in heterogeneous catalysis due to their enhanced geometric and electronic structures and outstanding catalytic performances. Silver (Ag) possesses necessary active sites for ethylene epoxidation, but the catalyst activity is usually sacrificed to obtain high selectivity towards ethylene oxide (EO). Herein, we report that using Al can help in tailoring the unoccupied 3d state of Ag on the MnO2 support through strong electronic metal-support interactions (EMSIs), overcoming the activity-selectivity trade-off for ethylene epoxidation and resulting in a very high ethylene conversion rate (~100 %) with 90 % selectivity for EO under mild conditions (170 °C and atmospheric pressure). Structural characterization and theoretical calculations revealed that the EMSIs obtained by the Al modification tailor the unoccupied 3d state of Ag, modulating the adsorption of ethylene (C2H4) and oxygen (O2) and facilitating EO desorption, resulting in high C2H4 conversion. Meanwhile, the increased number of positively charge Ag+ lowers the energy barrier for C2H4(ads) oxidation to produce oxametallacycle (OMC), inducing the unexpectedly high EO selectivity. Such an extraordinary electronic promotion provides new promising pathways for designing advanced metal catalysts with high activity and selectivity in selective oxidation reactions.
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Affiliation(s)
- Hongling Yang
- National Engineering Laboratory for VOCs Pollution Control Material & Technology, Research Center for Environmental Material and Pollution Control Technology, University of the Chinese Academy of Sciences, Beijing, 101408, China
- Beijing Key Laboratory for VOCs Pollution Prevention and Treatment Technology and Application of Urban Air, Beijing Municipal Research Institute of Eco-Environmental Protection, Beijing, 100037, China
| | - Ganggang Li
- National Engineering Laboratory for VOCs Pollution Control Material & Technology, Research Center for Environmental Material and Pollution Control Technology, University of the Chinese Academy of Sciences, Beijing, 101408, China
| | - Qinggang Liu
- Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023, China
| | - Haixia Cheng
- Material Digital R&D Center, China Iron & Steel Research Institute Group, Beijing, 100081, China
| | | | - Jie Cheng
- National Engineering Laboratory for VOCs Pollution Control Material & Technology, Research Center for Environmental Material and Pollution Control Technology, University of the Chinese Academy of Sciences, Beijing, 101408, China
| | - Guoxia Jiang
- National Engineering Laboratory for VOCs Pollution Control Material & Technology, Research Center for Environmental Material and Pollution Control Technology, University of the Chinese Academy of Sciences, Beijing, 101408, China
| | - Fenglian Zhang
- National Engineering Laboratory for VOCs Pollution Control Material & Technology, Research Center for Environmental Material and Pollution Control Technology, University of the Chinese Academy of Sciences, Beijing, 101408, China
| | - Zhongshen Zhang
- National Engineering Laboratory for VOCs Pollution Control Material & Technology, Research Center for Environmental Material and Pollution Control Technology, University of the Chinese Academy of Sciences, Beijing, 101408, China
| | - Zhengping Hao
- National Engineering Laboratory for VOCs Pollution Control Material & Technology, Research Center for Environmental Material and Pollution Control Technology, University of the Chinese Academy of Sciences, Beijing, 101408, China
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4
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Luo X, Wu B, Li J, Wang Y, Tang X, Li C, Shao M, Wei Z. Benzoic Acid: Electrode-Regenerated Molecular Catalyst to Boost Cycloolefin Epoxidation. J Am Chem Soc 2023; 145:20665-20671. [PMID: 37672764 DOI: 10.1021/jacs.3c08227] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/08/2023]
Abstract
Stoichiometric oxidants are always consumed in organic oxidation reactions. For example, olefins react with peroxy acids to be converted to epoxy, while the oxidant, peroxy acid, is downgraded to carboxylic acid. In this paper, we aim to regenerate carboxylic acid into peroxy acid through electric water splitting at the anode, in order to construct an electrochemical catalytic cycle to accomplish the cycloolefin epoxidation reaction. Benzoic acid, which can be strongly adsorbed onto the anode and rapidly converted to peroxy acid, was selected to catalyze the cycloolefin epoxidation. Furthermore, the peroxybenzoic acid will be further activated on the electrode to fulfill the epoxidation and release the benzoic acid to complete the catalytic cycle. In this designed reaction cycle, benzoic acid acts as a molecular catalyst with the assistance of the electrode-generated reactive oxygen species (ROS). This method can successfully reform the consumable oxidants to molecular catalysts, which can be generalized to other green organic syntheses.
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Affiliation(s)
- Xiaoxue Luo
- College of Chemistry and Chemical Engineering, Chongqing University, Chongqing, 400044, China
| | - Baijing Wu
- College of Chemistry and Chemical Engineering, Chongqing University, Chongqing, 400044, China
| | - Jinrui Li
- College of Chemistry and Chemical Engineering, Chongqing University, Chongqing, 400044, China
| | - Yufeng Wang
- College of Chemistry and Chemical Engineering, Chongqing University, Chongqing, 400044, China
| | - Xiaoxia Tang
- College of Chemistry and Chemical Engineering, Chongqing University, Chongqing, 400044, China
| | - Cunpu Li
- College of Chemistry and Chemical Engineering, Chongqing University, Chongqing, 400044, China
| | - Minhua Shao
- Department of Chemical and Biological Engineering, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong
| | - Zidong Wei
- College of Chemistry and Chemical Engineering, Chongqing University, Chongqing, 400044, China
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5
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Yang H, Wang X, Liu Q, Huang A, Zhang X, Yu Y, Zhuang Z, Li G, Li Y, Peng Q, Chen X, Xiao H, Chen C. Heterogeneous Iridium Single-Atom Molecular-like Catalysis for Epoxidation of Ethylene. J Am Chem Soc 2023; 145:6658-6670. [PMID: 36802612 DOI: 10.1021/jacs.2c11380] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/23/2023]
Abstract
Developing efficient and simple catalysts to reveal the key scientific issues in the epoxidation of ethylene has been a long-standing goal for chemists, whereas a heterogenized molecular-like catalyst is desirable which combines the best aspects of homogeneous and heterogeneous catalysts. Single-atom catalysts can effectively mimic molecular catalysts on account of their well-defined atomic structures and coordination environments. Herein, we report a strategy for selective epoxidation of ethylene, which exploits a heterogeneous catalyst comprising iridium single atoms to interact with the reactant molecules that act analogously to ligands, resulting in molecular-like catalysis. This catalytic protocol features a near-unity selectivity (99%) to produce value-added ethylene oxide. We investigated the origin of the improvement of selectivity for ethylene oxide for this iridium single-atom catalyst and attributed the improvement to the π-coordination between the iridium metal center with a higher oxidation state and ethylene or molecular oxygen. The molecular oxygen adsorbed on the iridium single-atom site not only helps to strengthen the adsorption of ethylene molecule by iridium but also alters its electronic structure, allowing iridium to donate electrons into the double bond π* orbitals of ethylene. This catalytic strategy facilitates the formation of five-membered oxametallacycle intermediates, leading to the exceptionally high selectivity for ethylene oxide. Our model of single-atom catalysts featuring remarkable molecular-like catalysis can be utilized as an effective strategy for inhibiting the overoxidation of the desired product. Implementing the concepts of homogeneous catalysis into heterogeneous catalysis would provide new perspectives for the design of new advanced catalysts.
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Affiliation(s)
- Hongling Yang
- Engineering Research Center of Advanced Rare Earth Materials, Department of Chemistry, Tsinghua University, Beijing 100084, China.,Beijing Key Laboratory for VOCs Pollution Prevention and Treatment Technology and Application of Urban Air, Beijing Municipal Research Institute of Eco-Environmental Protection, Beijing 100037, China
| | | | - Qinggang Liu
- Engineering Research Center of Advanced Rare Earth Materials, Department of Chemistry, Tsinghua University, Beijing 100084, China
| | - Aijian Huang
- Engineering Research Center of Advanced Rare Earth Materials, Department of Chemistry, Tsinghua University, Beijing 100084, China
| | - Xun Zhang
- School of Physical Science and Technology, Shanghai Tech University, Shanghai 201210, China
| | - Yi Yu
- School of Physical Science and Technology, Shanghai Tech University, Shanghai 201210, China
| | - Zewen Zhuang
- Engineering Research Center of Advanced Rare Earth Materials, Department of Chemistry, Tsinghua University, Beijing 100084, China.,College of Materials Science and Engineering, Fuzhou University, Fuzhou 350108, China
| | - Ganggang Li
- National Engineering Laboratory for VOCs Pollution Control Material & Technology, Research Center for Environmental Material and Pollution Control Technology, University of Chinese Academy of Sciences, Beijing 101408, China
| | - Yang Li
- Beijing Single-Atom Catalysis Technology Co., Ltd., Beijing 100094, China
| | - Qing Peng
- Engineering Research Center of Advanced Rare Earth Materials, Department of Chemistry, Tsinghua University, Beijing 100084, China
| | - Xin Chen
- Beijing Advanced Innovation Center for Materials Genome Engineering, Institute of Solid State Chemistry, University of Science and Technology Beijing, Beijing 100083, China
| | - Hai Xiao
- Engineering Research Center of Advanced Rare Earth Materials, Department of Chemistry, Tsinghua University, Beijing 100084, China
| | - Chen Chen
- Engineering Research Center of Advanced Rare Earth Materials, Department of Chemistry, Tsinghua University, Beijing 100084, China
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6
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Particle size dependence of ethylene epoxidation rates on Ag/α-Al2O3 catalysts: Why particle size distributions matter. J Catal 2023. [DOI: 10.1016/j.jcat.2023.02.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/18/2023]
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7
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Fan Y, Wang F, Li R, Liu C, Fu Q. Surface Hydroxyl-Determined Migration and Anchoring of Silver on Alumina in Oxidative Redispersion. ACS Catal 2023. [DOI: 10.1021/acscatal.2c05453] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Affiliation(s)
- Yamei Fan
- Department of Chemical Physics, University of Science and Technology of China, Hefei 230026, China
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China
| | - Fei Wang
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China
- Faculty of Environmental Science and Engineering, Kunming University of Science and Technology, Kunming 650500, China
| | - Rongtan Li
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China
| | - Conghui Liu
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China
| | - Qiang Fu
- Department of Chemical Physics, University of Science and Technology of China, Hefei 230026, China
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China
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8
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Alzahrani HA, Bravo-Suárez JJ. In Situ Raman Spectroscopy Study of Silver Particle Size Effects on Unpromoted Ag/α-Al2O3 During Ethylene Epoxidation with Molecular Oxygen. J Catal 2023. [DOI: 10.1016/j.jcat.2023.01.016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
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9
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In situ discovery on the formation of supported silver catalysts for ethylene epoxidation. ADV POWDER TECHNOL 2022. [DOI: 10.1016/j.apt.2022.103732] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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10
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Ramos BG, Castriciones EV. Adhesion and bonding at the Ag(110)/Au(110) interface, a DFT study. J Mol Graph Model 2022; 118:108342. [DOI: 10.1016/j.jmgm.2022.108342] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2022] [Revised: 09/14/2022] [Accepted: 09/21/2022] [Indexed: 11/29/2022]
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11
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Wen QX, Xu H, Nan Y, Xie Y, Cheng D. Design of CuCs-doped Ag-based catalyst for ethylene epoxidation. CHINESE J CHEM PHYS 2022. [DOI: 10.1063/1674-0068/cjcp2111246] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
Abstract
Our recent theoretical studies have screened out CuCs-doped Ag-based promising catalysts for ethylene epoxidation [ACS Catal. 11, 3371 (2021)]. The theoretical results were based on surface modeling, while in the actual reaction process Ag catalysts are particle shaped. In this work, we combine density functional theory (DFT), Wulff construction theory, and micro kinetic analysis to study the catalytic performance of Ag catalysts at the particle model. It demonstrates that the CuCs-doped Ag catalysts are superior to pure Ag catalysts in terms of selectivity and activity, which is further proved by experimental validation. The characterization analysis finds that both Cu and Cs dopant promote particle growth as well as particle dispersion, resulting in a grain boundary-rich Ag particle. Besides, CuCs also facilitate electrophilic atomic oxygen formation on catalyst surface, which is benefitial for ethylene oxide formation and desorption. Our work provides a case study for catalyst design by combining theory and experiment.
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Affiliation(s)
- Qi-xing Wen
- State Key Laboratory of Organic-Inorganic Composites, Beijing Key Laboratory of Energy Environmental Catalysis, Beijing University of Chemical Technology, Beijing 100029, China
| | - Haoxiang Xu
- State Key Laboratory of Organic-Inorganic Composites, Beijing Key Laboratory of Energy Environmental Catalysis, Beijing University of Chemical Technology, Beijing 100029, China
| | - Yang Nan
- Lanzhou Petrochemical Research Center, Petrochemical Research Institute, PetroChina, LanZhou 730060, China
| | - Yuan Xie
- Lanzhou Petrochemical Research Center, Petrochemical Research Institute, PetroChina, LanZhou 730060, China
| | - Daojian Cheng
- State Key Laboratory of Organic-Inorganic Composites, Beijing Key Laboratory of Energy Environmental Catalysis, Beijing University of Chemical Technology, Beijing 100029, China
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12
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Egelske BT, Xiong W, Zhou H, Monnier JR. Effects of the method of active site characterization for determining structure-sensitivity in Ag-catalyzed ethylene epoxidation. J Catal 2022. [DOI: 10.1016/j.jcat.2022.03.021] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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13
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Jing W, Yang C, Luo S, Lin X, Tang M, Zheng R, Lian D, Luo X. One-Pot Method to Synthesize Silver Nanoparticle-Modified Bamboo-Based Carbon Aerogels for Formaldehyde Removal. Polymers (Basel) 2022; 14:polym14050860. [PMID: 35267682 PMCID: PMC8912511 DOI: 10.3390/polym14050860] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2022] [Revised: 02/16/2022] [Accepted: 02/20/2022] [Indexed: 02/04/2023] Open
Abstract
The present study demonstrated a freeze-drying-carbonization method to synthesize silver nanoparticle-modified bamboo-based carbon aerogels to remove formaldehyde. The bamboo-based carbon aerogel (BCA) has the advantages of controllable pore size and rich oxygen-containing groups, which can provide a good foundation for surface modification. BCA can greatly enhance the purification of formaldehyde by loading silver nanoparticles. The maximum adsorption capacity of 5% Ag/BCA for formaldehyde reached 42 mg/g under 25 ppm formaldehyde concentration, which is 5.25 times more than that of BCA. The relevant data were fitted by the Langmuir model and the pseudo 2nd-order model and good results were obtained, indicating that chemical absorption occurred between the carbonyl of formaldehyde and the hydroxyl of BCA. Therefore, silver nanoparticle-modified bamboo-based carbon aerogels play a positive role in the selective removal of formaldehyde. Silver nanoparticles promoted the activation of oxygen and strengthened the effect of BCA on HCHO adsorption.
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Affiliation(s)
- Wenxiang Jing
- Engineering Research Center of Biomass Materials, Ministry of Education, Southwest University of Science and Technology, Mianyang 621002, China; (W.J.); (X.L.)
- Yibin Industrial Academy of Forestry and Bamboo, Yibin 644005, China; (C.Y.); (M.T.); (R.Z.); (D.L.)
| | - Chai Yang
- Yibin Industrial Academy of Forestry and Bamboo, Yibin 644005, China; (C.Y.); (M.T.); (R.Z.); (D.L.)
| | - Shuang Luo
- Sichuan Tea College, Yibin University, Yibin 644000, China;
| | - Xiaoyan Lin
- Engineering Research Center of Biomass Materials, Ministry of Education, Southwest University of Science and Technology, Mianyang 621002, China; (W.J.); (X.L.)
- Correspondence:
| | - Min Tang
- Yibin Industrial Academy of Forestry and Bamboo, Yibin 644005, China; (C.Y.); (M.T.); (R.Z.); (D.L.)
| | - Renhong Zheng
- Yibin Industrial Academy of Forestry and Bamboo, Yibin 644005, China; (C.Y.); (M.T.); (R.Z.); (D.L.)
| | - Dongming Lian
- Yibin Industrial Academy of Forestry and Bamboo, Yibin 644005, China; (C.Y.); (M.T.); (R.Z.); (D.L.)
| | - Xuegang Luo
- Engineering Research Center of Biomass Materials, Ministry of Education, Southwest University of Science and Technology, Mianyang 621002, China; (W.J.); (X.L.)
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14
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Computational and experimental insights into reactive forms of oxygen species on dynamic Ag surfaces under ethylene epoxidation conditions. J Catal 2022. [DOI: 10.1016/j.jcat.2021.11.031] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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15
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Makaudi R, Paumo HK, Pone BK, Katata-Seru L. In Situ Stabilisation of Silver Nanoparticles at Chitosan-Functionalised Graphene Oxide for Reduction of 2,4-Dinitrophenol in Water. Polymers (Basel) 2021; 13:3800. [PMID: 34771356 PMCID: PMC8587642 DOI: 10.3390/polym13213800] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2021] [Revised: 10/20/2021] [Accepted: 10/22/2021] [Indexed: 11/29/2022] Open
Abstract
This investigation reports the in situ growth of silver nanoparticles onto covalently bonded graphene oxide-chitosan, which serve as supported nanocatalysts for the NaBH4 reduction of 2,4-dinitrophenol in aqueous systems. Fumaryl chloride reacted with chitosan in an acidic environment to yield a tailored polymeric material. The latter was, in turn, treated with the pre-synthesised graphene oxide sheets under acidic conditions to generate the GO-functionalised membrane (GO-FL-CS). The adsorption of Ag+ from aqueous media by GO-FL-CS yielded a set of membranes that were decorated with silver nanoparticles (Ag NPs@GO-FL-CS) without any reducing agent. Various analytical tools were used to characterise these composites, including Fourier transform infrared spectroscopy, Brunauer-Emmett-Teller surface area analysis, X-ray diffraction, scanning electron microscopy/energy-dispersive X-ray analysis, inductively coupled plasma-mass spectrometry, and transmission electron microscopy. The silver-loaded materials were further used for the remediation of 2,4-dinitrophenol from aqueous solutions under batch operation. The BET analysis revealed that the functionalisation of GO with chitosan and Ag NPs (average size 20-60 nm) resulted in a three-fold increased surface area. The optimised catalyst (Ag mass loading 16.95%) displayed remarkable activity with an apparent pseudo-first-order rate constant of 13.5 × 10-3 min-1. The cyclic voltammetry experiment was conducted to determine the nitro-conversion pathway. The reusability/stability test showed no significant reduction efficiency of this metal-laden composite over six cycles. Findings from the study revealed that Ag NPs@GO-FL-CS could be employed as a low-cost and recyclable catalyst to convert toxic nitroaromatics in wastewater.
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Affiliation(s)
- Rebaone Makaudi
- Department of Chemistry, Faculty of Natural and Agricultural Sciences, North-West University, Mmabatho 2735, South Africa;
| | - Hugues Kamdem Paumo
- Department of Chemistry, Faculty of Natural and Agricultural Sciences, North-West University, Mmabatho 2735, South Africa;
| | - Boniface Kamdem Pone
- Department of Pharmacy, Faculty of Pharmaceutical Sciences, University of Sao Paulo, Sao Paulo 05508-900, Brazil;
| | - Lebogang Katata-Seru
- Department of Chemistry, Faculty of Natural and Agricultural Sciences, North-West University, Mmabatho 2735, South Africa;
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16
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Salaev M, Salaeva A, Vodyankina O. Towards the understanding of promoting effects of Re, Cs and Cl promoters for silver catalysts of ethylene epoxidation: A computational study. Catal Today 2021. [DOI: 10.1016/j.cattod.2020.04.057] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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17
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Tomboc GM, Park Y, Lee K, Jin K. Directing transition metal-based oxygen-functionalization catalysis. Chem Sci 2021; 12:8967-8995. [PMID: 34276926 PMCID: PMC8261717 DOI: 10.1039/d1sc01272j] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2021] [Accepted: 06/07/2021] [Indexed: 11/21/2022] Open
Abstract
This review presents the recent progress of oxygen functionalization reactions based on non-electrochemical (conventional organic synthesis) and electrochemical methods. Although both methods have their advantages and limitations, the former approach has been used to synthesize a broader range of organic substances as the latter is limited by several factors, such as poor selectivity and high energy cost. However, because electrochemical methods can replace harmful terminal oxidizers with external voltage, organic electrosynthesis has emerged as greener and more eco-friendly compared to conventional organic synthesis. The progress of electrochemical methods toward oxygen functionalization is presented by an in-depth discussion of different types of electrically driven-chemical organic synthesis, with particular attention to recently developed electrochemical systems and catalyst designs. We hope to direct the attention of readers to the latest breakthroughs of traditional oxygen functionalization reactions and to the potential of electrochemistry for the transformation of organic substrates to useful end products.
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Affiliation(s)
- Gracita M Tomboc
- Department of Chemistry and Research Institute for Natural Sciences, Korea University Seoul 02841 Republic of Korea
| | - Yeji Park
- Department of Chemistry and Research Institute for Natural Sciences, Korea University Seoul 02841 Republic of Korea
| | - Kwangyeol Lee
- Department of Chemistry and Research Institute for Natural Sciences, Korea University Seoul 02841 Republic of Korea
| | - Kyoungsuk Jin
- Department of Chemistry and Research Institute for Natural Sciences, Korea University Seoul 02841 Republic of Korea
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Salaev M. Computational insights into promoting effects of alkali metals, Re, and Cl for silver catalysts of ethylene epoxidation. MOLECULAR CATALYSIS 2021. [DOI: 10.1016/j.mcat.2021.111574] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Lamoth M, Jones T, Plodinec M, Machoke A, Wrabetz S, Krämer M, Karpov A, Rosowski F, Piccinin S, Schlögl R, Frei E. Nanocatalysts Unravel the Selective State of Ag. ChemCatChem 2020. [DOI: 10.1002/cctc.202000035] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Maximilian Lamoth
- Fritz Haber Institute of the Max Planck Society Department of Inorganic Chemistry Faradayweg 4–6 14195 Berlin Germany
| | - Travis Jones
- Fritz Haber Institute of the Max Planck Society Department of Inorganic Chemistry Faradayweg 4–6 14195 Berlin Germany
| | - Milivoj Plodinec
- Fritz Haber Institute of the Max Planck Society Department of Inorganic Chemistry Faradayweg 4–6 14195 Berlin Germany
| | - Albert Machoke
- Max Planck Institute for Chemical Energy Conversion Department Heterogeneous Reactions Stiftstraße 34-36 45470 Mülheim an der Ruhr Germany
| | - Sabine Wrabetz
- Fritz Haber Institute of the Max Planck Society Department of Inorganic Chemistry Faradayweg 4–6 14195 Berlin Germany
| | - Michael Krämer
- Process Research and Chemical Engineering Process Catalysis Research BASF SE 67063 Ludwigshafen Germany
| | - Andrey Karpov
- Process Research and Chemical Engineering Process Catalysis Research BASF SE 67063 Ludwigshafen Germany
| | - Frank Rosowski
- Process Research and Chemical Engineering Process Catalysis Research BASF SE 67063 Ludwigshafen Germany
- BasCat-UniCat BASF Joint Lab Technical University Berlin Hardenbergstraße 36 10623 Berlin Germany
| | - Simone Piccinin
- Istituto Officina dei Materiali (CNR-IOM) Area Science Park Basovizza S.S. 14, Km. 163,5 34149 Trieste Italy
| | - Robert Schlögl
- Fritz Haber Institute of the Max Planck Society Department of Inorganic Chemistry Faradayweg 4–6 14195 Berlin Germany
- Max Planck Institute for Chemical Energy Conversion Department Heterogeneous Reactions Stiftstraße 34-36 45470 Mülheim an der Ruhr Germany
| | - Elias Frei
- Fritz Haber Institute of the Max Planck Society Department of Inorganic Chemistry Faradayweg 4–6 14195 Berlin Germany
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