1
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Zhao X, Wang S, Yang K, Yang X, Liu X. Controlled gold-palladium cores in ceria hollow spheres as nanoreactor for plasmon-enhanced catalysis under visible light irradiation. J Colloid Interface Sci 2023; 633:11-23. [PMID: 36427425 DOI: 10.1016/j.jcis.2022.11.061] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2022] [Revised: 11/04/2022] [Accepted: 11/12/2022] [Indexed: 11/18/2022]
Abstract
Visible-light-driven organic transformations boosting by localized surface plasmon resonance (LSPR) have been attracting considerable interests. Gold-palladium (Au-Pd) bimetallic nanoparticles (NPs) are considered as ideal plasmonic catalysts realizing efficient light-driven catalysis. Nevertheless, stability and adjustability of plasmonic Au-Pd NPs remain to be a challenging task. Herein, we designed the controlled Au-Pd cores in ceria (CeO2) hollow spheres (Au-Pd@h-CeO2) as nanoreactor for Suzuki cross-coupling reactions. Under visible light irradiation, the Au-Pd@h-CeO2 exhibited remarkable photocatalytic performance with a turnover frequency (TOF) value as high as 797 h-1. More impressively, the coupling reactions of aryl chlorides bearing electron-withdrawing groups proceeded better and afforded the corresponding desired products in good yields. Detailed structural, optical and photoelectrochemical characterizations unraveled that the enhanced photocatalytic efficiency of Au-Pd@h-CeO2 was attributed to the LSPR effect of controllable Au-Pd cores and their synergetic effect of hollow CeO2 shells. The merits of this hollow sphere architecture lied on as followed: (I) Incident light could be reflected and refracted between the inner cores and outer shells, which extended the trapping of incident light, and then enhanced the light harvesting efficiency; (II) the mesoporous architecture of CeO2 hollow spheres provided a huge specific surface area and numerous mesoporous channels, which could enhance the absorption of reactants and provided more active sites; (III) LSPR excitation of Au-Pd NPs and band-gap excitation of CeO2 simultaneously occurred under visible light illumination, inducing a more efficient separation and transfer of charge carriers. Furthermore, due to the confinment effect of CeO2 shells, the Au-Pd@h-CeO2 exhibited an excellent reusability after six cycles without significant deactivation of yield. Our findings provided a facile way to design highly efficient plasmonic-enhanced photocatalysts utilized for catalytic organic reactions.
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Affiliation(s)
- Xiaohua Zhao
- School of Materials Science and Engineering, Jiangsu University, Zhenjiang 212013, China
| | - Siyao Wang
- School of Materials Science and Engineering, Jiangsu University, Zhenjiang 212013, China
| | - Kaixin Yang
- School of Materials Science and Engineering, Jiangsu University, Zhenjiang 212013, China
| | - Xinya Yang
- Zhenjiang Key Laboratory of Functional Chemistry, Institute of Medicine & Chemical Engineering, Zhenjiang College, Zhenjiang 212028, China
| | - Xiang Liu
- Zhenjiang Key Laboratory of Functional Chemistry, Institute of Medicine & Chemical Engineering, Zhenjiang College, Zhenjiang 212028, China.
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2
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Huang X, Lin D, Duan P, Chen H, Zhao Y, Yang W, Pan Q, Tian X. Space-confined growth of nanoscale metal-organic frameworks/Pd in hollow mesoporous silica for highly efficient catalytic reduction of 4-nitrophenol. J Colloid Interface Sci 2023; 629:55-64. [PMID: 36150248 DOI: 10.1016/j.jcis.2022.09.075] [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: 06/24/2022] [Revised: 08/26/2022] [Accepted: 09/13/2022] [Indexed: 11/23/2022]
Abstract
The development of confined growth of metal-organic frameworks (MOFs) in a nano-space remains a challenge mainly due to the spatial size randomness and inhomogeneity of host materials and the limitation of MOF species. In this study, we developed a general "stepwise vacuum evaporation" strategy, which allows the nano-confined growth of MOFs in hollow mesoporous silica nanospheres (HMSN) by the vacuum forces and the capillary effect. A series of nanoscale MOFs including ZIF-8, ZIF-90, HKUST-1, MIL-53(Cr) and UiO-66-NH2 were confinely synthesized inside the cavities of HMSN, resulting in hierarchically porous composites with core-shell structures. Further functionalization was studied by anchoring Pd to obtain UiO-66-NH2/Pd@HMSN catalyst, which exhibited excellent activity in the catalytic reduction of 4-nitrophenol to 4-aminophenol under ambient condition.
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Affiliation(s)
- Xiaojing Huang
- Key Laboratory of Advanced Materials of Tropical Island Resources, Ministry of Education, School of Chemical Engineering and Technology, Hainan University, Haikou 570228, China
| | - Duoyu Lin
- Key Laboratory of Advanced Materials of Tropical Island Resources, Ministry of Education, School of Chemical Engineering and Technology, Hainan University, Haikou 570228, China
| | - Pan Duan
- Key Laboratory of Advanced Materials of Tropical Island Resources, Ministry of Education, School of Chemical Engineering and Technology, Hainan University, Haikou 570228, China
| | - Huiping Chen
- Key Laboratory of Advanced Materials of Tropical Island Resources, Ministry of Education, School of Chemical Engineering and Technology, Hainan University, Haikou 570228, China
| | - Yujuan Zhao
- Key Laboratory of Advanced Materials of Tropical Island Resources, Ministry of Education, School of Chemical Engineering and Technology, Hainan University, Haikou 570228, China
| | - Weiting Yang
- Key Laboratory of Advanced Materials of Tropical Island Resources, Ministry of Education, School of Chemical Engineering and Technology, Hainan University, Haikou 570228, China.
| | - Qinhe Pan
- Key Laboratory of Advanced Materials of Tropical Island Resources, Ministry of Education, School of Chemical Engineering and Technology, Hainan University, Haikou 570228, China
| | - Xinlong Tian
- State Key Laboratory of Marine Resource Utilization in South China Sea, Hainan Provincial Key Lab of Fine Chemistry, School of Chemical Engineering and Technology, Hainan University, Haikou 570228, China
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3
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Yang D, Fan R, Luo F, Chen Z, Gerson AR. Facile and green fabrication of efficient Au nanoparticles catalysts using plant extract via a mesoporous silica-assisted strategy. Colloids Surf A Physicochem Eng Asp 2021. [DOI: 10.1016/j.colsurfa.2021.126580] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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4
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Chen Z, Huang Q, Zhang Y, Sheng P, Cui Z. Confined Generation of Homogeneously Dispersed Au and SnO 2 Nanoparticles in Layered Silicate as Synergistic Catalysts. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2021; 37:2341-2348. [PMID: 33560859 DOI: 10.1021/acs.langmuir.0c03216] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
With the aid of the confined conversion of layered silicate RUB-15, homogeneously dispersed Au and SnO2 nanoparticles (NPs) were generated in the confined layer space of RUB-15. The Au-SnO2/SiO2 composite was obtained with the structure that ultrafine Au and SnO2 NPs were supported on SiO2 lamellas. Benefited by the Sn(II)-assisted in situ reduction strategy, Au NPs were highly uniformed and evenly distributed in/on the RUB-15. This Au-SnO2/SiO2 composite was employed as a catalyst to the reduction of 4-nitrophenol showing excellent catalytic activity. The catalytic rate constant at room temperature was calculated to be 6.64 min-1, which was dramatically higher than that of Au/SiO2 composite produced by reduction with hydrazine hydrate on the same support of layered silicate RUB-15. The interaction between Au and SnO2 NPs increased the electron density around Au NPs, which was demonstrated to be an essential factor to the excellent catalytic activity of the Au-SnO2/SiO2 composite. The simple and universal synthesis method afforded precise control over the size/spatial arrangement of Au and SnO2 NPs on SiO2 lamellas. The high activity of the Au-SnO2/SiO2 composite demonstrated that the strategy used in this study has good potential application prospect. Furthermore, this work provided new perspective on the catalysis mechanism to the metal/semiconductor synergistic catalyst system.
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Affiliation(s)
- Zhe Chen
- MOE Key Laboratory of Resources and Environmental System Optimization, College of Environmental Science and Engineering, North China Electric Power University, Beijing 102206, PR China
| | - Qiang Huang
- MOE Key Laboratory of Resources and Environmental System Optimization, College of Environmental Science and Engineering, North China Electric Power University, Beijing 102206, PR China
| | - Yifei Zhang
- MOE Key Laboratory of Resources and Environmental System Optimization, College of Environmental Science and Engineering, North China Electric Power University, Beijing 102206, PR China
| | - Peng Sheng
- Material Laboratory of State Grid Corporation of China, State Key Laboratory of Advanced Transmission Technology, Global Energy Interconnection Research Institute Company, Ltd., Beijing 102209, PR China
| | - Zhimin Cui
- Key Laboratory of Bio-Inspired Smart Interfacial Science and Technology of Ministry of Education, School of Chemistry, Beihang University, Beijing 100191, PR China
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5
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Luo L, Bock L, Liang Y, Anwander R. Gold‐Loaded Mesoporous Organosilica‐Silica Core‐Shell Nanoparticles as Catalytic Nanoreactors. Eur J Inorg Chem 2020. [DOI: 10.1002/ejic.202000691] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Leilei Luo
- Institut für Anorganische Chemie Universität Tübingen Auf der Morgenstelle 18 72076 Tübingen Germany
| | - Lorenz Bock
- Institut für Anorganische Chemie Universität Tübingen Auf der Morgenstelle 18 72076 Tübingen Germany
| | - Yucang Liang
- Institut für Anorganische Chemie Universität Tübingen Auf der Morgenstelle 18 72076 Tübingen Germany
| | - Reiner Anwander
- Institut für Anorganische Chemie Universität Tübingen Auf der Morgenstelle 18 72076 Tübingen Germany
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6
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Biomimetic CoO@AuPt nanozyme responsive to multiple tumor microenvironmental clues for augmenting chemodynamic therapy. Biomaterials 2020; 257:120279. [DOI: 10.1016/j.biomaterials.2020.120279] [Citation(s) in RCA: 50] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2020] [Revised: 07/27/2020] [Accepted: 08/01/2020] [Indexed: 02/07/2023]
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7
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Wu Y, Zhang Y, Lv X, Mao C, Zhou Y, Wu W, Zhang H, Huang Z. Synthesis of polymeric ionic liquids mircrospheres/Pd nanoparticles/CeO2 core-shell structure catalyst for catalytic oxidation of benzyl alcohol. J Taiwan Inst Chem Eng 2020. [DOI: 10.1016/j.jtice.2019.11.006] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
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8
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Man Y, Li S, Diao Q, Lee YI, Liu HG. PS-b-PAA/Cu two-dimensional nanoflowers fabricated at the liquid/liquid interface: A highly active and robust heterogeneous catalyst. Colloids Surf A Physicochem Eng Asp 2019. [DOI: 10.1016/j.colsurfa.2019.03.033] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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9
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Highly active catalysts: Double‐shelled hollow nanospheres with tiny Pt NPs. Appl Organomet Chem 2019. [DOI: 10.1002/aoc.4858] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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10
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Zhang Z, Shi H, Wu Q, Bu X, Yang Y, Zhang J, Huang Y. MOF-derived CeO2/Au@SiO2 hollow nanotubes and their catalytic activity toward 4-nitrophenol reduction. NEW J CHEM 2019. [DOI: 10.1039/c8nj05745a] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A hollow CeO2/Au@SiO2 sandwiched nanocatalyst with enhanced catalytic activity was prepared by using Ce-MOF as a sacrificial template.
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Affiliation(s)
- Zewu Zhang
- School of Materials Science and Engineering
- Nanjing Institute of Technology
- Nanjing 21167
- P. R. China
- Jiangsu Key Laboratory of Advanced Structural Materials and Application Technology
| | - Haojun Shi
- School of Materials Science and Engineering
- Nanjing Institute of Technology
- Nanjing 21167
- P. R. China
- Jiangsu Key Laboratory of Advanced Structural Materials and Application Technology
| | - Qiong Wu
- School of Materials Science and Engineering
- Nanjing Institute of Technology
- Nanjing 21167
- P. R. China
- Jiangsu Key Laboratory of Advanced Structural Materials and Application Technology
| | - Xiaohai Bu
- School of Materials Science and Engineering
- Nanjing Institute of Technology
- Nanjing 21167
- P. R. China
- Jiangsu Key Laboratory of Advanced Structural Materials and Application Technology
| | - Yunfeng Yang
- School of Materials Science and Engineering
- Nanjing Institute of Technology
- Nanjing 21167
- P. R. China
- Jiangsu Key Laboratory of Advanced Structural Materials and Application Technology
| | - Jie Zhang
- School of Materials Science and Engineering
- Nanjing Institute of Technology
- Nanjing 21167
- P. R. China
- Jiangsu Key Laboratory of Advanced Structural Materials and Application Technology
| | - Yue Huang
- School of Materials Science and Engineering
- Nanjing Institute of Technology
- Nanjing 21167
- P. R. China
- Jiangsu Key Laboratory of Advanced Structural Materials and Application Technology
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11
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Fabricating highly catalytically active block copolymer/metal nanoparticle microstructures at the liquid/liquid interface. J Colloid Interface Sci 2018; 522:272-282. [DOI: 10.1016/j.jcis.2018.03.071] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2018] [Revised: 03/21/2018] [Accepted: 03/21/2018] [Indexed: 12/15/2022]
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12
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Yuan S, Gao Y, Bao J, Zhang Y, Chen W, Fang J, Zhou Y, Wang Y, Zhu W. Preparation of disk-like Pt/CeO2
-p-TiO2
catalyst derived from MIL-125(Ti) for excellent catalytic performance. Appl Organomet Chem 2018. [DOI: 10.1002/aoc.4395] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Shenhao Yuan
- School of Chemistry and Chemical Engineering; Southeast University, Jiangsu Optoelectronic Functional Materials and Engineering Laboratory; Nanjing 211189 China
| | - Yan Gao
- School of Chemistry and Chemical Engineering; Southeast University, Jiangsu Optoelectronic Functional Materials and Engineering Laboratory; Nanjing 211189 China
| | - Jiehua Bao
- School of Chemistry and Chemical Engineering; Southeast University, Jiangsu Optoelectronic Functional Materials and Engineering Laboratory; Nanjing 211189 China
| | - Yiwei Zhang
- School of Chemistry and Chemical Engineering; Southeast University, Jiangsu Optoelectronic Functional Materials and Engineering Laboratory; Nanjing 211189 China
| | - Wenxia Chen
- School of Chemistry and Chemical Engineering; Southeast University, Jiangsu Optoelectronic Functional Materials and Engineering Laboratory; Nanjing 211189 China
| | - Jiasheng Fang
- School of Chemistry and Chemical Engineering; Southeast University, Jiangsu Optoelectronic Functional Materials and Engineering Laboratory; Nanjing 211189 China
| | - Yuming Zhou
- School of Chemistry and Chemical Engineering; Southeast University, Jiangsu Optoelectronic Functional Materials and Engineering Laboratory; Nanjing 211189 China
| | - Yanyun Wang
- School of Chemistry and Chemical Engineering; Southeast University, Jiangsu Optoelectronic Functional Materials and Engineering Laboratory; Nanjing 211189 China
| | - Wenyu Zhu
- School of Chemistry and Chemical Engineering; Southeast University, Jiangsu Optoelectronic Functional Materials and Engineering Laboratory; Nanjing 211189 China
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13
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Zheng Y, Wang D, Li Z, Sun X, Gao T, Zhou G. Laccase biosensor fabricated on flower–shaped yolk–shell SiO2 nanospheres for catechol detection. Colloids Surf A Physicochem Eng Asp 2018. [DOI: 10.1016/j.colsurfa.2017.10.086] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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14
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Gao Y, Fang J, Zhang Y, Zhang C, Zhao S, Zhou Y, Huang M, Sheng X. Novel synthesis of Fe
2
O
3
–Pt ellipsoids coated by double‐shelled La
2
O
3
as a catalyst for the reduction of 4‐nitrophenol. Appl Organomet Chem 2018. [DOI: 10.1002/aoc.4208] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Yan Gao
- School of Chemistry and Chemical EngineeringSoutheast University, Jiangsu Optoelectronic Functional Materials and Engineering Laboratory Nanjing 211189 China
| | - Jiasheng Fang
- School of Chemistry and Chemical EngineeringSoutheast University, Jiangsu Optoelectronic Functional Materials and Engineering Laboratory Nanjing 211189 China
| | - Yiwei Zhang
- School of Chemistry and Chemical EngineeringSoutheast University, Jiangsu Optoelectronic Functional Materials and Engineering Laboratory Nanjing 211189 China
| | - Chao Zhang
- School of Chemistry and Chemical EngineeringSoutheast University, Jiangsu Optoelectronic Functional Materials and Engineering Laboratory Nanjing 211189 China
| | - Shuo Zhao
- School of Chemistry and Chemical EngineeringSoutheast University, Jiangsu Optoelectronic Functional Materials and Engineering Laboratory Nanjing 211189 China
| | - Yuming Zhou
- School of Chemistry and Chemical EngineeringSoutheast University, Jiangsu Optoelectronic Functional Materials and Engineering Laboratory Nanjing 211189 China
| | - Mengqiu Huang
- School of Chemistry and Chemical EngineeringSoutheast University, Jiangsu Optoelectronic Functional Materials and Engineering Laboratory Nanjing 211189 China
| | - Xiaoli Sheng
- School of Chemistry and Chemical EngineeringSoutheast University, Jiangsu Optoelectronic Functional Materials and Engineering Laboratory Nanjing 211189 China
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15
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Huang M, Fang J, Zhang Y, Zhang C, Zhou Y, Zhao S, Gao Y, Sheng X. Fabrication and characterization of double‐shelled CeO
2
‐La
2
O
3
/Au/Fe
3
O
4
hollow architecture as a recyclable and highly thermal stability nanocatalyst. Appl Organomet Chem 2017. [DOI: 10.1002/aoc.4201] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Mengqiu Huang
- School of Chemistry and Chemical EngineeringSoutheast University, Jiangsu Optoelectronic Functional Materials and Engineering Laboratory Nanjing 211189 China
| | - Jiasheng Fang
- School of Chemistry and Chemical EngineeringSoutheast University, Jiangsu Optoelectronic Functional Materials and Engineering Laboratory Nanjing 211189 China
| | - Yiwei Zhang
- School of Chemistry and Chemical EngineeringSoutheast University, Jiangsu Optoelectronic Functional Materials and Engineering Laboratory Nanjing 211189 China
| | - Chao Zhang
- School of Chemistry and Chemical EngineeringSoutheast University, Jiangsu Optoelectronic Functional Materials and Engineering Laboratory Nanjing 211189 China
| | - Yuming Zhou
- School of Chemistry and Chemical EngineeringSoutheast University, Jiangsu Optoelectronic Functional Materials and Engineering Laboratory Nanjing 211189 China
| | - Shuo Zhao
- School of Chemistry and Chemical EngineeringSoutheast University, Jiangsu Optoelectronic Functional Materials and Engineering Laboratory Nanjing 211189 China
| | - Yan Gao
- School of Chemistry and Chemical EngineeringSoutheast University, Jiangsu Optoelectronic Functional Materials and Engineering Laboratory Nanjing 211189 China
| | - Xiaoli Sheng
- School of Chemistry and Chemical EngineeringSoutheast University, Jiangsu Optoelectronic Functional Materials and Engineering Laboratory Nanjing 211189 China
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16
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Fang J, Zhang Y, Zhou Y, Zhao S, Zhang C, Chen W, Bao J. Novel heterostructural Fe 2 O 3 CeO 2 /Au/carbon yolk – shell magnetic ellipsoids assembled with ultrafine Au nanoparticles for superior catalytic performance. J Taiwan Inst Chem Eng 2017. [DOI: 10.1016/j.jtice.2017.10.006] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
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17
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Gao Y, Zhang Y, Zhou Y, Zhang C, Zhang H, Zhao S, Fang J, Huang M, Sheng X. Synthesis of ordered mesoporous La 2 O 3 -ZrO 2 composites with encapsulated Pt NPs and the effect of La-dopping on catalytic activity. J Colloid Interface Sci 2017; 503:178-185. [DOI: 10.1016/j.jcis.2017.05.023] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2017] [Revised: 05/08/2017] [Accepted: 05/09/2017] [Indexed: 01/25/2023]
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18
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Huang M, Zhang Y, Zhou Y, Zhang C, Zhao S, Fang J, Gao Y, Sheng X. Synthesis and characterization of hollow ZrO 2 –TiO 2 /Au spheres as a highly thermal stability nanocatalyst. J Colloid Interface Sci 2017; 497:23-32. [DOI: 10.1016/j.jcis.2017.02.052] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2017] [Revised: 02/20/2017] [Accepted: 02/22/2017] [Indexed: 01/20/2023]
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19
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Fang J, Zhang Y, Zhou Y, Zhao S, Zhang C, Zhang H, Sheng X, Wang K. Fabrication of Ellipsoidal Silica Yolk-Shell Magnetic Structures with Extremely Stable Au Nanoparticles as Highly Reactive and Recoverable Catalysts. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2017; 33:2698-2708. [PMID: 28248116 DOI: 10.1021/acs.langmuir.6b03873] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
A novel strategy was reported for the fabrication of yolk-shell magnetic MFSVmS-Au nanocomposites (NCs) consisting of double-layered ellipsoidal mesoporous silica shells, numerous sub-4 nm Au nanoparticles (NPs), and magnetic Fe central cores. The hierarchical FSVmS NCs with ellipsoidal α-Fe2O3@mSiO2/mSiO2 as yolks/shells were first prepared through the facile sol-gel template-assisted method, and plenty of extremely stable ultrafine Au NPs were postencapsulated within interlayer cavities through the unique deposition-precipitation method mediated with Au(en)2Cl3 compounds. Notably, ethylenediamine ligands were used to synthesize the stable cationic complexes, [Au(en)2]3+, that readily underwent the deprotonation reaction to chemically modify negatively charged mesoporous silica under alkaline conditions. The subsequent two-stage programmed hydrogen annealing initiated the in situ formation of Au NPs and the reduction of α-Fe2O3 to magnetic Fe, where the synthesized Au NPs were highly resistant to harsh thermal sintering even at 700 °C. Given its structural superiority and magnetic nature, the MFSVmS-Au was demonstrated to be a highly efficient and recoverable nanocatalyst with superior activity and reusability toward the reduction of 4-nitrophenol to 4-aminophenol, and the pristine morphology was retained after six recycling tests.
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Affiliation(s)
- Jiasheng Fang
- School of Chemistry and Chemical Engineering, Southeast University, Jiangsu Optoelectronic Functional Materials and Engineering Laboratory , Nanjing 211189, P. R. China
| | - Yiwei Zhang
- School of Chemistry and Chemical Engineering, Southeast University, Jiangsu Optoelectronic Functional Materials and Engineering Laboratory , Nanjing 211189, P. R. China
| | - Yuming Zhou
- School of Chemistry and Chemical Engineering, Southeast University, Jiangsu Optoelectronic Functional Materials and Engineering Laboratory , Nanjing 211189, P. R. China
| | - Shuo Zhao
- School of Chemistry and Chemical Engineering, Southeast University, Jiangsu Optoelectronic Functional Materials and Engineering Laboratory , Nanjing 211189, P. R. China
| | - Chao Zhang
- School of Chemistry and Chemical Engineering, Southeast University, Jiangsu Optoelectronic Functional Materials and Engineering Laboratory , Nanjing 211189, P. R. China
| | - Hongxing Zhang
- School of Chemistry and Chemical Engineering, Southeast University, Jiangsu Optoelectronic Functional Materials and Engineering Laboratory , Nanjing 211189, P. R. China
| | - Xiaoli Sheng
- School of Chemistry and Chemical Engineering, Southeast University, Jiangsu Optoelectronic Functional Materials and Engineering Laboratory , Nanjing 211189, P. R. China
| | - Kunpeng Wang
- School of Chemistry and Chemical Engineering, Southeast University, Jiangsu Optoelectronic Functional Materials and Engineering Laboratory , Nanjing 211189, P. R. China
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20
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Fang J, Zhang Y, Zhou Y, Zhao S, Zhang C, Huang M, Gao Y, Yang C. Synthesis of double-shell hollow magnetic Au-loaded ellipsoids as highly active and recoverable nanoreactors. NEW J CHEM 2017. [DOI: 10.1039/c7nj00275k] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A schematic for the synthesis of double-shell magnetic Au-loaded ellipsoids (Fe@MO2–Au@H–SiO2) and the reaction mechanism for the catalytic reduction of 4-NP.
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Affiliation(s)
- Jiasheng Fang
- School of Chemistry and Chemical Engineering
- Southeast University
- Jiangsu Optoelectronic Functional Materials and Engineering Laboratory
- Nanjing 211189
- P. R. China
| | - Yiwei Zhang
- School of Chemistry and Chemical Engineering
- Southeast University
- Jiangsu Optoelectronic Functional Materials and Engineering Laboratory
- Nanjing 211189
- P. R. China
| | - Yuming Zhou
- School of Chemistry and Chemical Engineering
- Southeast University
- Jiangsu Optoelectronic Functional Materials and Engineering Laboratory
- Nanjing 211189
- P. R. China
| | - Shuo Zhao
- School of Chemistry and Chemical Engineering
- Southeast University
- Jiangsu Optoelectronic Functional Materials and Engineering Laboratory
- Nanjing 211189
- P. R. China
| | - Chao Zhang
- School of Chemistry and Chemical Engineering
- Southeast University
- Jiangsu Optoelectronic Functional Materials and Engineering Laboratory
- Nanjing 211189
- P. R. China
| | - Mengqiu Huang
- School of Chemistry and Chemical Engineering
- Southeast University
- Jiangsu Optoelectronic Functional Materials and Engineering Laboratory
- Nanjing 211189
- P. R. China
| | - Yan Gao
- School of Chemistry and Chemical Engineering
- Southeast University
- Jiangsu Optoelectronic Functional Materials and Engineering Laboratory
- Nanjing 211189
- P. R. China
| | - Chenghan Yang
- School of Chemistry and Chemical Engineering
- Southeast University
- Jiangsu Optoelectronic Functional Materials and Engineering Laboratory
- Nanjing 211189
- P. R. China
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