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Facet-selective response of trigger molecule to CeO2 {110} for up-regulating oxidase-like activity
Huang, Lunjie1; Zhang, Wentao1; Chen, Kai1; Zhu, Wenxin1; Liu, Xinnan1; Wang, Rong1; Zhang, Xu1; Hu, Na2; Suo, Yourui2; Wang, Jianlong1
2017-12-15
发表期刊CHEMICAL ENGINEERING JOURNAL
卷号330页码:746-752
文章类型Article
摘要Nanozymes, as a robust alternative to natural enzyme, usually suffer from unsatisfactory catalytic efficiency and limited modulating flexibility. Herein, we proposed a novel strategy to conquer these disadvantages relying on the facet-selective response of external trigger molecule which boosts the oxidase-like catalysis of nanoceria. Results indicate that the trigger molecule (i.e., sulfate ion) prefers to bind to the rod-like nanoceria (on its unique {1 1 0} facets) rather than nanopolyhedra or nanocubes. Sulfate ion-treated CeO2 nanorods (SO42- /CeO2 NRs) became modulatable oxidase mimetics of high efficiency, and the catalytic efficiency (k(cat)/K-m) of SO42- /CeO2 NRs improved by nearly 20-fold (versus that of the naked CeO2 NRs) for 3,3 ',5,5 '-tetramethylbenzidine (TMB) oxidation. This modulating strategy, together with the mechanism behind, is finally applied to develop colorimetric biosensors, which paves the way for embedding the system in biological and environmental networks.
关键词Biocatalysis Colorimetric Biosensor Facet Dependence Modulating Strategy Nanoceria Oxidase Mimics
WOS标题词Science & Technology ; Technology
DOI10.1016/j.cej.2017.08.026
关键词[WOS]PEROXIDASE-LIKE ACTIVITY ; STRUCTURE DEPENDENCE ; CERIA NANOPARTICLES ; ARTIFICIAL ENZYMES ; CATALYTIC-ACTIVITY ; MIMETIC ACTIVITY ; NANOSCALE CERIA ; NANOCERIA ; NANOCRYSTALS ; NANOZYMES
收录类别SCI
语种英语
项目资助者National Natural Science Foundation of China(21675127) ; Fundamental Research Funds for the Northwest A&F University of China(2014YB093 ; 2452015257)
WOS研究方向Engineering
WOS类目Engineering, Environmental ; Engineering, Chemical
WOS记录号WOS:000414083300071
引用统计
文献类型期刊论文
条目标识符http://210.75.249.4/handle/363003/10368
专题中国科学院西北高原生物研究所
作者单位1.Northwest A&F Univ, Coll Food Sci & Engn, Yangling 712100, Shaanxi, Peoples R China
2.Chinese Acad Sci, Northwest Inst Plateau Biol, Qinghai Key Lab Qinghai Tibet Plateau Biol Resour, Xining 810008, Qinghai, Peoples R China
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Huang, Lunjie,Zhang, Wentao,Chen, Kai,et al. Facet-selective response of trigger molecule to CeO2 {110} for up-regulating oxidase-like activity[J]. CHEMICAL ENGINEERING JOURNAL,2017,330:746-752.
APA Huang, Lunjie.,Zhang, Wentao.,Chen, Kai.,Zhu, Wenxin.,Liu, Xinnan.,...&Wang, Jianlong.(2017).Facet-selective response of trigger molecule to CeO2 {110} for up-regulating oxidase-like activity.CHEMICAL ENGINEERING JOURNAL,330,746-752.
MLA Huang, Lunjie,et al."Facet-selective response of trigger molecule to CeO2 {110} for up-regulating oxidase-like activity".CHEMICAL ENGINEERING JOURNAL 330(2017):746-752.
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