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Flowerlike CuO/Au Nanoparticle Heterostructures for Nonenzymatic Glucose Detection
ACS Applied Nano Materials ( IF 5.3 ) Pub Date : 2021-05-04 , DOI: 10.1021/acsanm.1c00607 ShaoZhen Wang 1 , Mi Zheng 1 , Xue Zhang 1 , MingPeng Zhuo 2 , Qingqing Zhou 1 , Yang Su 1 , Min Zheng 3, 4 , Guotao Yuan 3 , ZuoShan Wang 1, 4
ACS Applied Nano Materials ( IF 5.3 ) Pub Date : 2021-05-04 , DOI: 10.1021/acsanm.1c00607 ShaoZhen Wang 1 , Mi Zheng 1 , Xue Zhang 1 , MingPeng Zhuo 2 , Qingqing Zhou 1 , Yang Su 1 , Min Zheng 3, 4 , Guotao Yuan 3 , ZuoShan Wang 1, 4
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The controlled preparation of two-dimensional (2D) nanomaterials exhibiting heterojunction structures based on nontoxic and economical transition metal oxides represents breakthroughs in the electrochemistry field. Herein, flowerlike CuO/Au nanoparticles that have 2D nanomaterial characteristics and excellent glucose sensing performance were prepared by microwave hydrothermal synthesis of sea urchinlike CuO and subsequent self-generated acid etching of the sea urchinlike CuO in the presence of HAuCl4 and NaBH4. HAuCl4 was not only the reactant for the authigenic acid etching, but also the raw material for the heterojunction structure. Upon the acid etching, Au nanoparticles with an average size of 15 nm were uniformly distributed on the surface of CuO nanoflakes. Benefiting from a large specific surface area and low electron transfer resistance, the flowerlike CuO/Au nanoparticles were excellent electrode modification materials: glucose sensors based on the glassy carbon electrodes modified by the flowerlike CuO/Au nanoparticles demonstrated high sensitivity (2455 μA·mM–1·cm–2), wide detection range (0.01–12 mM), low detection limit (0.53 μM), good stability, good reproducibility, and good selectivity. The green and economical authigenic acid etching method presented in this study exemplifies the controlled preparation of 2D nanomaterials with specific properties.
中文翻译：
用于非酶促葡萄糖检测的花状 CuO/Au 纳米颗粒异质结构
基于无毒且经济的过渡金属氧化物呈现异质结结构的二维 (2D) 纳米材料的可控制备代表了电化学领域的突破。在此，通过微波水热合成海胆状CuO，随后在HAuCl 4和NaBH 4存在下自生酸蚀刻海胆状CuO，制备了具有二维纳米材料特性和优异葡萄糖传感性能的花状CuO/Au纳米颗粒。氯化铝4不仅是自生酸蚀刻的反应物，也是异质结结构的原料。在酸蚀刻后，平均尺寸为 15 nm 的 Au 纳米颗粒均匀分布在 CuO 纳米薄片的表面。受益于大比表面积和低电子转移电阻，花状 CuO/Au 纳米粒子是极好的电极修饰材料：基于花状 CuO/Au 纳米粒子修饰的玻碳电极的葡萄糖传感器表现出高灵敏度（2455 μA·mM - 1 ·cm –2)、检测范围宽(0.01-12 mM)、检测限低(0.53 μM)、稳定性好、重现性好、选择性好。本研究中提出的绿色和经济的自生酸蚀刻方法举例说明了具有特定特性的二维纳米材料的受控制备。
更新日期：2021-06-25
中文翻译：
用于非酶促葡萄糖检测的花状 CuO/Au 纳米颗粒异质结构
基于无毒且经济的过渡金属氧化物呈现异质结结构的二维 (2D) 纳米材料的可控制备代表了电化学领域的突破。在此，通过微波水热合成海胆状CuO，随后在HAuCl 4和NaBH 4存在下自生酸蚀刻海胆状CuO，制备了具有二维纳米材料特性和优异葡萄糖传感性能的花状CuO/Au纳米颗粒。氯化铝4不仅是自生酸蚀刻的反应物，也是异质结结构的原料。在酸蚀刻后，平均尺寸为 15 nm 的 Au 纳米颗粒均匀分布在 CuO 纳米薄片的表面。受益于大比表面积和低电子转移电阻，花状 CuO/Au 纳米粒子是极好的电极修饰材料：基于花状 CuO/Au 纳米粒子修饰的玻碳电极的葡萄糖传感器表现出高灵敏度（2455 μA·mM - 1 ·cm –2)、检测范围宽(0.01-12 mM)、检测限低(0.53 μM)、稳定性好、重现性好、选择性好。本研究中提出的绿色和经济的自生酸蚀刻方法举例说明了具有特定特性的二维纳米材料的受控制备。
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