CAS OpenIR  > 中科院上海应用物理研究所2011-2020年
A "competitive occupancy" strategy toward Co-N-4 single-atom catalysts embedded in 2D TiN/rGO sheets for highly efficient and stable aromatic nitroreduction
Gu, Y; Wu, AP; Wang, L; Wang, DX; Yan, HJ; Yu, P; Xie, Y; Tian, CG; Sun, FF; Fu, HG
2020
Source PublicationJOURNAL OF MATERIALS CHEMISTRY A
ISSN2050-7488
Volume8Issue:9Pages:4807-4815
Subtype期刊论文
AbstractSingle-atom catalysts (SACs) have been promising in various catalytic fields, but the controllable synthesis of SACs with high stability remains challenging. Here, we show a robust strategy toward the fabrication of highly efficient and stable SACs based on the "competitive occupancy" of two metal (M) species on graphene oxide (GO). The abundant M-1 (Ti) species predominantly occupy more groups of GO, thereby leaving a tiny number of groups in the gaps of the M-1 species to combine with M-2 (Co2+, etc.) species. Consequently, this guarantees the formation of Co-N-4 SACs embedded in 2D TiN/rGO sheets during nitridation. Further, TiN can act as a "spacer" to prevent Co-N-4 from aggregation, thereby improving catalyst stability. Co-N-4/TiN-rGO exhibits outstanding catalytic performance for the fast conversion of highly concentrated aromatic nitro compounds (similar to 0.3-2 mM) into amino compounds and excellent recyclability, which is the best among reported catalysts. In contrast, TiN/rGO has no obvious activity, and Co4N-rGO prepared without Ti competition shows poor activity and stability, which indicates the vital role of Co-N-4 and TiN for obtaining the remarkable catalytic ability of Co-N-4/TiN-rGO. The reaction mechanism is also proposed based on theoretical calculations. The strategy can be used to design Ni (Fe, Cr, Cu)-based SACs.
KeywordMETAL HETEROSTRUCTURES HYDROGENATION GRAPHENE
DOI10.1039/c9ta13615k
Indexed BySCI
Language英语
Citation statistics
Document Type期刊论文
Identifierhttp://ir.sinap.ac.cn/handle/331007/32669
Collection中科院上海应用物理研究所2011-2020年
Affiliation1.Harbin Engn Univ, Coll Mat Sci & Chem Engn, Minist Educ, Key Lab Superlight Mat & Surface Technol, Harbin 150001, Peoples R China
2.Heilongjiang Univ, Key Lab Funct Inorgan Mat Chem, Minist Educ Peoples Republ China, Harbin 150080, Peoples R China
3.Chinese Acad Sci, Shanghai Inst Appl Phys, SSRF, Shanghai 201204, Peoples R China
Recommended Citation
GB/T 7714
Gu, Y,Wu, AP,Wang, L,et al. A "competitive occupancy" strategy toward Co-N-4 single-atom catalysts embedded in 2D TiN/rGO sheets for highly efficient and stable aromatic nitroreduction[J]. JOURNAL OF MATERIALS CHEMISTRY A,2020,8(9):4807-4815.
APA Gu, Y.,Wu, AP.,Wang, L.,Wang, DX.,Yan, HJ.,...&Fu, HG.(2020).A "competitive occupancy" strategy toward Co-N-4 single-atom catalysts embedded in 2D TiN/rGO sheets for highly efficient and stable aromatic nitroreduction.JOURNAL OF MATERIALS CHEMISTRY A,8(9),4807-4815.
MLA Gu, Y,et al."A "competitive occupancy" strategy toward Co-N-4 single-atom catalysts embedded in 2D TiN/rGO sheets for highly efficient and stable aromatic nitroreduction".JOURNAL OF MATERIALS CHEMISTRY A 8.9(2020):4807-4815.
Files in This Item: Download All
File Name/Size DocType Version Access License
A competitive occupa(3560KB)期刊论文出版稿开放获取CC BY-NC-SAView Download
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Gu, Y]'s Articles
[Wu, AP]'s Articles
[Wang, L]'s Articles
Baidu academic
Similar articles in Baidu academic
[Gu, Y]'s Articles
[Wu, AP]'s Articles
[Wang, L]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Gu, Y]'s Articles
[Wu, AP]'s Articles
[Wang, L]'s Articles
Terms of Use
No data!
Social Bookmark/Share
File name: A competitive occupancystrategy toward Co-N-4 single-atom catalysts embedded in 2D TiN-rGO sheets for highly efficient and stable aromatic nitroreduction.pdf
Format: Adobe PDF
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.