NADPH-guided synthesis of iodide-responsive nanozyme: synergistic effects in nanocluster growth and peroxidase-like activity
NADPH-guided synthesis of iodide-responsive nanozyme: synergistic effects in nanocluster growth and peroxidase-like activity
复制标题
NADPH 引导的碘响应纳米酶的合成：纳米簇生长和过氧化物酶样活性的协同效应
DOI：
10.1007/s10853-020-05589-0
复制
发表时间：
2020-11
影响因子：
4.5
通讯作者：
Fu Yan
中科院分区：
文献类型：
--
作者：
Zheng Shanshan;Zhang Qianqian;Yin Danyang;Gu Hongzhi;Zhang Jinli;Li Wei;Fu Yan
在合适的 [K2Pd(NO2)4]/[AgNO3] 范围内，还原型辅酶 II 在 AgPd 纳米团簇的生长过程中充当还原剂和封端剂。相对于单金属 Pd 或 Ag，AgPd 纳米团簇的生长动力学显着加速。 AgPd 纳米团簇显示出从 Ag 到 Pd 的显着电子捐赠，从而有助于金属 Pd0 原子的增强。相对于单金属纳米团簇，AgPd 纳米团簇表现出更好的过氧化物酶模拟活性。添加碘离子显着抑制 Ag1Pd1 纳米酶的过氧化物酶模拟活性。因此，Ag1Pd1催化的H2O2氧化3,3',5,5'-四甲基联苯胺的反应被大大抑制。 Ag1Pd1 纳米酶的过氧化物酶样活性对 0.5~180 nM 范围内的碘离子表现出敏感的响应。 AgPd 纳米酶对碘离子相对于硫离子具有理想的选择性。这项工作将为生物传感、分离、纳米技术和绿色合成领域的仿生纳米材料的开发提供指导。图形摘要
Reduced coenzyme II acts as both reducing and capping agents in the growth of AgPd nanoclusters within a suitable range of [K2Pd(NO2)4]/[AgNO3]. A remarkable acceleration occurs in the growth kinetics of AgPd nanoclusters with respect to monometallic Pd or Ag. AgPd nanoclusters display a marked electron donation from Ag to Pd, thereby contributing to the enhancement of metallic Pd0atoms. The AgPd nanoclusters exhibit better peroxidase mimicking activities relative to their monometallic counterparts. Addition of iodide ions significantly inhibits the peroxidase mimicking activity of Ag1Pd1nanozyme. Hence, the Ag1Pd1-catalyzed oxidation of 3,3′,5,5′-tetramethylbenzidine by H2O2is greatly suppressed. The peroxidase-like activity of Ag1Pd1nanozyme exhibits a sensitive response to iodide ions in the range of 0.5 ~ 180 nM. AgPd nanozyme possesses a desirable selectivity toward iodide ions with respect to sulfide ions. This work would provide guidance for developing biomimetic nanomaterials in the areas of biosensing, separation, nanotechnology and green synthesis.Graphical abstract
登录
查看更多内容
影响因子：
9.9
作者：
N. V. S. Vallabani;A. Vinu;Sanjay Singh;Ajay S. Karakoti;Ajay S. Karakoti
通讯作者：
N. V. S. Vallabani;A. Vinu;Sanjay Singh;Ajay S. Karakoti;Ajay S. Karakoti
影响因子：
4.8
作者：
Brumaghim, JL;Li, Y;Linn, S
通讯作者：
Linn, S
影响因子：
7.4
作者：
P. Pienpinijtham;X. Han;S. Ekgasit;Y. Ozaki
通讯作者：
P. Pienpinijtham;X. Han;S. Ekgasit;Y. Ozaki
影响因子：
3.2
作者：
Yilin Zhao;Haotian Li;Anand Lopez;Haijia Su;Juewen Liu
通讯作者：
Yilin Zhao;Haotian Li;Anand Lopez;Haijia Su;Juewen Liu
影响因子：
--
作者：
Patricia Tegeder;M. Freitag;Kathryn M. Chepiga;Satoshi Muratsugu;Nadja Möller;Sebastian Lamping;Mizuki Tada;F. Glorius;B. Ravoo
通讯作者：
Patricia Tegeder;M. Freitag;Kathryn M. Chepiga;Satoshi Muratsugu;Nadja Möller;Sebastian Lamping;Mizuki Tada;F. Glorius;B. Ravoo