Green, low-cost synthesis of photoluminescent carbon dots by hydrothermal treatment of willow bark and their application as an effective photocatalyst for fabricating Au nanoparticles-reduced graphene oxide nanocomposites for glucose detection

Xiaoyun Qin; Wenbo Lu; Abdullah M. Asiri

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Green, low-cost synthesis of photoluminescent carbon dots by hydrothermal treatment of willow bark and their application as an effective photocatalyst for fabricating Au nanoparticles-reduced graphene oxide nanocomposites for glucose detection

机译：绿色，低成本合成光致发光的碳点，通过对柳树树皮的热液处理，并将其作为制造Au纳米颗粒还原的有效光催化剂，以用于葡萄糖检测

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In this study, we demonstrate that hydrothermal carbonization of low-cost wastes of willow bark leads to water-soluble, photoluminescent carbon dots (CDs) with diameters ranging from 1 to 4 nm and a quantum yield of approximately 6.0%. We further demonstrate the proof of concept that such CDs can be used as an effective photocatalyst for the simultaneous reduction of Au(m) complex and graphene oxide to form Au nanoparticles decorated reduced graphene oxide (AuNPs-rGO) nanocomposites by UV irradiation of a mixture of GO and HAuCl4 aqueous solution in the presence of CDs. It is found that the resultant AuNPs-rGO nanocomposites exhibit notable catalytic performance for H2O2 reduction and oxidation. Furthermore, we fabricate a glucose biosensor by immobilizing glucose oxidase on the AuNPs-rGO-modified glassy carbon electrode for glucose detection. The linear response range and detection limit are estimated to be from 2 mM to 18 mM (r: 0.995) and 45 μM, respectively. The application of this glucose sensor in human blood serum has also been demonstrated successfully.

机译：在这项研究中，我们证明了柳树皮的低成本废物的热液碳化导致水溶性，光致发光的碳圆点（CD）（CD），直径范围为1至4 nm，量子产率为约为6.0％。我们进一步证明了这样的概念证明，这种CD可以用作同时还原Au（M）复合物和氧化石墨烯的有效光催化剂，以形成Au纳米颗粒，以通过UV辐射来装饰还原的石墨烯（AUNPS-RGO）纳米复合材料在CD存在下的GO和HauCl4水溶液的。发现所得的Aunps-RGO纳米复合材料表现出明显的H2O2还原和氧化催化性能。此外，我们通过将葡萄糖氧化酶固定在AuNPS-RGO修饰的玻璃碳电极上以进行葡萄糖检测来制造葡萄糖生物传感器。线性响应范围和检测极限估计分别为2 mm至18 mm（R：0.995）和45μm。该葡萄糖传感器在人血清中的应用也已成功证明。

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来源
《Catalysis science & technology》 |2013年第4期|1027-1035|共9页
作者
Xiaoyun Qin; Wenbo Lu; Abdullah M. Asiri;
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作者单位

State Key Lab of Electroanatyiical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, Jilin, P. R. China.;

Chemistry Department, Faculty of Science, KingAbdulaziz university, Jeddah 21589, Saudi Arabia;

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正文语种英语
中图分类汉语教学;
关键词
Hydrothermal treatment; Willow Bark; quantum yieldGlucose OxidaseGlucose sensorsNanocompositescarbon quantum dots;

机译：水热处理;柳树;量子屈服葡萄糖氧化酶葡萄糖传感器nanocompositescositescopositescartonum量子点;

Green, low-cost synthesis of photoluminescent carbon dots by hydrothermal treatment of willow bark and their application as an effective photocatalyst for fabricating Au nanoparticles-reduced graphene oxide nanocomposites for glucose detection

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