{"title":"增强铂修饰石墨氮化碳氧化酶活性的比色法检测抗坏血酸","authors":"Priya Singh, Ravi Prakash Ojha, Subhajit Jana, Aniruddha Jaiswal, Rajiv Prakash","doi":"10.1007/s10854-025-14745-8","DOIUrl":null,"url":null,"abstract":"<div><p>We present a sensitive colorimetric sensor based on platinum (Pt) nanoparticle-decorated graphitic carbon nitride (Pt@g-C<sub>3</sub>N<sub>4</sub>) for the detection of ascorbic acid (AsA) in real samples. Pt@g-C<sub>3</sub>N<sub>4</sub> nanocomposites were synthesized through surface reduction of Pt ions on g-C<sub>3</sub>N<sub>4</sub> dispersions, with their synthesis confirmed by various characterization techniques. The nanocomposites exhibited enhanced oxidase-like activity, particularly in the oxidation of 3,3′,5,5′-tetramethylbenzidine (TMB). Utilizing AsA’s competitive inhibition of the oxidase activity, we developed a colorimetric assay for quantifying AsA in acetate buffer, commercially available tablets, and real samples such as orange and lemon juice. The sensor demonstrated a linear response in the 1–100 μM range, with a limit of detection of 0.28 μM. Additionally, we introduced a paper-based assay for on-site, naked-eye detection of AsA. This work offers a practical and cost-effective approach for monitoring AsA levels in various food and pharmaceutical products, with potential applications in health diagnostics and quality control.</p></div>","PeriodicalId":646,"journal":{"name":"Journal of Materials Science: Materials in Electronics","volume":"36 12","pages":""},"PeriodicalIF":2.8000,"publicationDate":"2025-04-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Enhanced oxidase activity of platinum decorated graphitic carbon nitride for the colorimetric detection of ascorbic acid\",\"authors\":\"Priya Singh, Ravi Prakash Ojha, Subhajit Jana, Aniruddha Jaiswal, Rajiv Prakash\",\"doi\":\"10.1007/s10854-025-14745-8\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>We present a sensitive colorimetric sensor based on platinum (Pt) nanoparticle-decorated graphitic carbon nitride (Pt@g-C<sub>3</sub>N<sub>4</sub>) for the detection of ascorbic acid (AsA) in real samples. Pt@g-C<sub>3</sub>N<sub>4</sub> nanocomposites were synthesized through surface reduction of Pt ions on g-C<sub>3</sub>N<sub>4</sub> dispersions, with their synthesis confirmed by various characterization techniques. The nanocomposites exhibited enhanced oxidase-like activity, particularly in the oxidation of 3,3′,5,5′-tetramethylbenzidine (TMB). Utilizing AsA’s competitive inhibition of the oxidase activity, we developed a colorimetric assay for quantifying AsA in acetate buffer, commercially available tablets, and real samples such as orange and lemon juice. The sensor demonstrated a linear response in the 1–100 μM range, with a limit of detection of 0.28 μM. Additionally, we introduced a paper-based assay for on-site, naked-eye detection of AsA. This work offers a practical and cost-effective approach for monitoring AsA levels in various food and pharmaceutical products, with potential applications in health diagnostics and quality control.</p></div>\",\"PeriodicalId\":646,\"journal\":{\"name\":\"Journal of Materials Science: Materials in Electronics\",\"volume\":\"36 12\",\"pages\":\"\"},\"PeriodicalIF\":2.8000,\"publicationDate\":\"2025-04-21\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Journal of Materials Science: Materials in Electronics\",\"FirstCategoryId\":\"5\",\"ListUrlMain\":\"https://link.springer.com/article/10.1007/s10854-025-14745-8\",\"RegionNum\":4,\"RegionCategory\":\"工程技术\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"ENGINEERING, ELECTRICAL & ELECTRONIC\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Materials Science: Materials in Electronics","FirstCategoryId":"5","ListUrlMain":"https://link.springer.com/article/10.1007/s10854-025-14745-8","RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"ENGINEERING, ELECTRICAL & ELECTRONIC","Score":null,"Total":0}
Enhanced oxidase activity of platinum decorated graphitic carbon nitride for the colorimetric detection of ascorbic acid
We present a sensitive colorimetric sensor based on platinum (Pt) nanoparticle-decorated graphitic carbon nitride (Pt@g-C3N4) for the detection of ascorbic acid (AsA) in real samples. Pt@g-C3N4 nanocomposites were synthesized through surface reduction of Pt ions on g-C3N4 dispersions, with their synthesis confirmed by various characterization techniques. The nanocomposites exhibited enhanced oxidase-like activity, particularly in the oxidation of 3,3′,5,5′-tetramethylbenzidine (TMB). Utilizing AsA’s competitive inhibition of the oxidase activity, we developed a colorimetric assay for quantifying AsA in acetate buffer, commercially available tablets, and real samples such as orange and lemon juice. The sensor demonstrated a linear response in the 1–100 μM range, with a limit of detection of 0.28 μM. Additionally, we introduced a paper-based assay for on-site, naked-eye detection of AsA. This work offers a practical and cost-effective approach for monitoring AsA levels in various food and pharmaceutical products, with potential applications in health diagnostics and quality control.
期刊介绍：
The Journal of Materials Science: Materials in Electronics is an established refereed companion to the Journal of Materials Science. It publishes papers on materials and their applications in modern electronics, covering the ground between fundamental science, such as semiconductor physics, and work concerned specifically with applications. It explores the growth and preparation of new materials, as well as their processing, fabrication, bonding and encapsulation, together with the reliability, failure analysis, quality assurance and characterization related to the whole range of applications in electronics. The Journal presents papers in newly developing fields such as low dimensional structures and devices, optoelectronics including III-V compounds, glasses and linear/non-linear crystal materials and lasers, high Tc superconductors, conducting polymers, thick film materials and new contact technologies, as well as the established electronics device and circuit materials.
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