DataVXACS Applied Nano MaterialsPaper
journal article·2023-03-24

Palladium/Rhodium/Iridium Trimetallic Octahedral Nanozymes Exhibiting Enhanced Peroxidase-like Activity for Detecting Total Antioxidant Capacity in Food

Lin Yang, ZeHua Yang, Jian He, Qianqian Cao, Ruilin Zhang, Qiao Wang, Zhixi Chen, Weiwei Chen, Weiguo Wang

ACS Applied Nano Materials· Volume 6· Issue 6
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Source abstract

Abstract

Nanozymes are widely used in detecting biomarkers. However, designing nanozymes exhibiting high peroxidase-like activity is challenging. This study aimed to synthesize two types of nanozymes, Pd–Rh–Ir nanozyme (PRI nanozyme) and Pd–Ir nanozyme (PI nanozyme), exhibiting similar morphologies and enhanced activities. The first nanozyme comprised palladium, rhodium, and iridium (PRI nanozyme), while the second nanozyme comprised palladium and iridium (PI nanozyme). The PRI nanozyme exhibited a higher peroxidase-like activity than the PI nanozyme. Rhodium in the subsurface of the PRI nanozyme can lower the hydrogen peroxide decomposition energy and increase the hydroxyl radical (•OH) content in a catalytic system. As a proof of concept, the PRI nanozyme was used to detect ascorbic acid, cysteine, and glutathione, with limits of detection (LODs) being 0.14, 0.18, and 0.21 μM, respectively. Finally, the PRI nanozyme-based method was applied to determine the total antioxidant capacities (TACs) of different beverages, fruits, and vegetables. Among the tested samples, Actinidia Chinensis Planch exhibited the highest TAC. This study broadens the application of multimetallic nanozymes in the field of food quality and safety.
Source: openalex_inverted_index · Quality: baseline

Research context

NanomaterialsCatalysis & surfaces

OpenAlex topics: Advanced Nanomaterials in Catalysis · Electrochemical sensors and biosensors · Advanced biosensing and bioanalysis techniques

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Institute of Pharmacy and Pharmacology, University of South China, Hengyang 421000, Hunan, China

Hunan Province Cooperative Innovation Center for Molecular Target New Drug Study, Hengyang 421000, Hunan, China

Hunan Xinhexin Biological Medicine Co., Ltd., Pharmacy Graduate Education Innovation Base, Hengyang 421000, Hunan, China

Department of Ultrasound Imaging, The First Affiliated Hospital of Hengyang Medical College, University of South China, Hengyang 421001, Hunan, China

Blood Transfusion Department, The First Affiliated Hospital of Hengyang Medical College, University of South China, Hengyang 421001, Hunan, China

Hengyang Medical College, University of South China, Hengyang 421000, Hunan, China

Funding

Hengyang Science and Technology Board · Ministry of Science and Technology of the People's Republic of China · Natural Science Foundation of Hunan Province · Education Department of Hunan Province · Postgraduate Scientific Research Innovation Project of Hunan Province · Research learning and innovative experimental program for college students

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