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Phase-controlled synthesis of Ni nanocrystals with high catalytic activity in 4-nitrophenol reduction

文献类型：期刊论文

作者Zhuang, Jiahao2,3; Liu, Xianglin4; Ji, Yongjun1,3; Gu, Fangna3,4; Xu, Jing4; Han, Yi-fan4; Xu, Guangwen6; Zhong, Ziyi7,8; Su, Fabing3,5,6
刊名JOURNAL OF MATERIALS CHEMISTRY A
出版日期2020-11-14
卷号8期号:42页码:22143-22154
ISSN号2050-7488
DOI10.1039/d0ta07985e
英文摘要Controlled-synthesis of metal nanocrystals (NCs) with well-defined crystal phases has been developed as a promising strategy to tune their functional properties. However, the phase-controlled synthesis of Ni NCs remains a great challenge due to their thermodynamic instability. Here, we report a facile solvothermal method to prepare two typical well-defined Ni NCs, a hexagonal prism with a hexagonal close-packed (hcp) phase and an icosahedron with a face-centered cubic (fcc) phase. Their morphology and structure are well characterized, and the formation mechanism is systemically investigated. It is found that hcp Ni NCs are formed via an unusual phase transformation process from the thermodynamically stable fcc phase to metastable hcp phase. Both the experimental study and density functional theory (DFT) calculations reveal that the initial reduction rate of Ni2+ could control the internal structure of Ni at the nucleation stage, while the preferential adsorption of polyethylenimine (PEI) on hcp Ni facets plays a key role in the phase transformation and facet evolution of Ni NCs at the growth stage. Moreover, hcp Ni NCs exhibit superior catalytic activity and reusability in the reduction of 4-nitrophenol by NaBH4 with a remarkably higher reaction constant (2.23 min(-1)) than other non-noble metal catalysts (0.09-0.13 min(-1)) and some noble metal catalysts (0.14-1.96 min(-1)). This work provides a new approach for phase- and morphology-controlled synthesis of Ni NCs and new insight into their catalytic functions.
WOS关键词CLOSE-PACKED NICKEL ; GENERALIZED GRADIENT APPROXIMATION ; TOTAL-ENERGY CALCULATIONS ; REDUCED GRAPHENE OXIDE ; MAGNETIC-PROPERTIES ; METAL NANOCRYSTALS ; NANOPARTICLES ; HCP ; HYDROGENATION ; PARTICLES
资助项目National Natural Science Foundation of China[21776286]
WOS研究方向Chemistry ; Energy & Fuels ; Materials Science
语种英语
出版者ROYAL SOC CHEMISTRY
WOS记录号WOS:000585127100020
资助机构National Natural Science Foundation of China
源URL[http://ir.ipe.ac.cn/handle/122111/42557]  
专题中国科学院过程工程研究所
通讯作者Gu, Fangna; Su, Fabing
作者单位1.Beijing Technol & Business Univ, Sch Light Ind, Beijing 100048, Peoples R China
2.Univ Chinese Acad Sci, Sch Chem Engn, Beijing 100049, Peoples R China
3.Chinese Acad Sci, State Key Lab Multiphase Complex Syst, Inst Proc Engn, Beijing 100190, Peoples R China
4.East China Univ Sci & Technol, Sch Chem Engn, State Key Lab Chem Engn, Shanghai 200237, Peoples R China
5.Zhongke Langfang Inst Proc Engn, Langfang Econ & Tech Dev Zone, Fenghua Rd 1, Langfang 065001, Hebei, Peoples R China
6.Shenyang Univ Chem Technol, Inst Ind Chem & Energy Technol, Sch Chem Engn, Shenyang 110142, Liaoning, Peoples R China
7.Guangdong Technion Israel Inst Technol GTIIT, Coll Engn, 241 Daxue Rd, Shantou 515063, Peoples R China
8.Technion Israel Inst Technol, IIT, IL-32000 Haifa, Israel
推荐引用方式
GB/T 7714		 Zhuang, Jiahao,Liu, Xianglin,Ji, Yongjun,et al. Phase-controlled synthesis of Ni nanocrystals with high catalytic activity in 4-nitrophenol reduction[J]. JOURNAL OF MATERIALS CHEMISTRY A,2020,8(42):22143-22154.
APA Zhuang, Jiahao.,Liu, Xianglin.,Ji, Yongjun.,Gu, Fangna.,Xu, Jing.,...&Su, Fabing.(2020).Phase-controlled synthesis of Ni nanocrystals with high catalytic activity in 4-nitrophenol reduction.JOURNAL OF MATERIALS CHEMISTRY A,8(42),22143-22154.
MLA Zhuang, Jiahao,et al."Phase-controlled synthesis of Ni nanocrystals with high catalytic activity in 4-nitrophenol reduction".JOURNAL OF MATERIALS CHEMISTRY A 8.42(2020):22143-22154.

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来源：过程工程研究所

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