Flexible design in controllable synthesis of Ru catalyst toward enzymatic and electrochemical hydrogen peroxide performance

作者全名：Hu, Xi; Yang, Yujun; Pu, Yaoyang; Zhang, Weiwei; Mao, Xiang

作者地址：[Hu, Xi; Pu, Yaoyang; Mao, Xiang] Chongqing Med Univ, Coll Biomed Engn, State Key Lab Ultrasound Med & Engn, Chongqing 400016, Peoples R China; [Hu, Xi; Pu, Yaoyang; Mao, Xiang] Chongqing Med Univ, Coll Biomed Engn, Chongqing Key Lab Biomed Engn, Chongqing 400016, Peoples R China; [Yang, Yujun] Chongqing Med Univ, Chongqing Med Lab Microfluid, Dept Lab Med, Key Lab Lab Med Diag,Minist Educ, Chongqing 400016, Peoples R China; [Yang, Yujun] Chongqing Med Univ, SPRi Engn Res Ctr, Chongqing 400016, Peoples R China; [Zhang, Weiwei] Chongqing Med Univ, Affiliated Hosp 2, Dept Endocrine & Metab Dis, Chongqing 400016, Peoples R China

通信作者：Mao, X (通讯作者)，Chongqing Med Univ, Coll Biomed Engn, State Key Lab Ultrasound Med & Engn, Chongqing 400016, Peoples R China.

来源：NEW JOURNAL OF CHEMISTRY

ESI学科分类：CHEMISTRY

WOS号：WOS:001238837500001

JCR分区：Q2

影响因子：2.7

年份：2024

卷号：48

期号：24

开始页：11079

结束页：11089

文献类型：Article

关键词：　

摘要：The ruthenium (Ru)-based functional structure has been well understood in catalytic performance due to its special particularity in structural fabrication. In this work, the controllable synthesis of core-shell Ru nanomaterials is first reported, which were not only realized via ice bath conditions with amorphous characterization but also showed a flexible design in the controllable synthesis of crystalline Ru after high intensity focused ultrasound (HIFU) treatment. The achieved amorphous Ru particles (similar to 115 +/- 3 nm) and crystalline Ru (similar to 5 +/- 0.5 nm) exhibit hydrogen peroxide catalytic performance and can be considered as an electrochemical sensing platform. The Km value of core-shell Ru for 3,3 ',5,5 '-tetramethylbenzidine (TMB) was 0.221 mM, which exhibits higher affinity for TMB and prominent catalytic performance than horseradish peroxidase (HRP). For selectivity and sensitivity towards the detection of H2O2 molecules, it expressed a wide linear range from 0.5 to 100 mM with an H2O2 detection limit of 1.45 mu M (S/N = 3) and a sensitivity of 2.07 mu A mu M-1. After HIFU treatment, the diameter of the achieved crystalline Ru was about one-twentieth that of the core-shell Ru structure. An enhancement in catalytic performance was observed as a sensor platform for detecting H2O2, its detection range was wider, from 0.5 to 110 mM, its limit of detection was 0.007 mu M (S/N = 3), and it exhibited a higher sensitivity of 443 mu A mu M-1. Hence, this flexible design in the synthesis of Ru NMs (amorphous and crystalline in status) could provide a novel synthetic strategy and make achievements in catalytic performance. Ru amorphous structure is synthesized in an ice-bath atmosphere with acceptable catalytic performance in electrochemical detection and POD-like activity. Physical HIFU induced amorphous to crystalline state with an enhancement in catalytic performance.

基金机构：National Natural Science Foundation of China [CSTB2022NSCQ-MSX0113]; Chongqing Municipal Natural Science Foundation [KJQN202100448, KJQN201900436]; Scientific Foundation Project of Chongqing Education Commission [82002256]; National Natural Science Foundation of China

基金资助正文：This work was supported by the Chongqing Municipal Natural Science Foundation: CSTB2022NSCQ-MSX0113; Scientific Foundation Project of Chongqing Education Commission: KJQN202100448, KJQN201900436; National Natural Science Foundation of China: 82002256.