Welegergs Giday G, Ambaye Abera D, Jokazi Mbulelo, Nwahara Nnamdi, Nyokong Tebello
Institute for Nanotechnology Innovation, Rhodes University Makhanda 6140 South Africa
Debre Berhan University, Department of Chemistry P. O. Box 445 Debre Berhan Ethiopia.
RSC Adv. 2024 Aug 27;14(37):27122-27131. doi: 10.1039/d4ra05199h. eCollection 2024 Aug 22.
Herein, a novel and facile eco-friendly green chemistry approach has been devised at room temperature for synthesis of 1D hierarchical CuS hollow nanotubes on Cu substrate volatile organosulfur compounds from L for non-enzymatic glucose detection. Field emission scanning electron microscopy (FESEM), transmission electron microscopy (TEM), X-ray diffraction (XRD), energy dispersive X-ray spectroscopy (EDX), and X-ray spectroscopy (XPS) were employed to characterize the surface morphology, structural phase, compositional, and chemical states of the obtained samples, respectively. The SEM results confirm the formation of 1D hierarchical CuS hollow nanotubes. The XRD patterns are indexed to orthogonal anilite CuS crystal planes and the EDX spectra clearly reveal the presence of Cu and S elements. XPS spectra confirms peaks of Cu 2p and S 1s core levels, which are typical characteristics of Cu(i) and S(ii), respectively. The Brunauer-Emmett-Teller (BET) specific surface area for obtained CuS hollow nanotubes is 2.07 m g with a pore size distribution of 27.90 nm. Using CuS hollow nanotubes, the detection of non-enzymatic glucose was conducted over a dynamic range of concentrations from 0.5 to 100 μmol L and reveals a high sensitivity of 1058.33 μA mMcm and a limit of detection (LOD) of 0.127 μmol L. The obtained results indicated that CuS hollow nanotubes are promising candidates for non-enzymatic glucose detection.
在此，我们设计了一种新颖、简便且环保的绿色化学方法，可在室温下于铜基底上合成一维分级结构的硫化铜（CuS）中空纳米管，用于非酶法葡萄糖检测，该方法利用挥发性有机硫化合物。采用场发射扫描电子显微镜（FESEM）、透射电子显微镜（TEM）、X射线衍射（XRD）、能量色散X射线光谱（EDX）和X射线光电子能谱（XPS）分别对所得样品的表面形貌、结构相、组成和化学状态进行表征。扫描电子显微镜结果证实了一维分级结构CuS中空纳米管的形成。X射线衍射图谱对应于正交辉铜矿CuS晶面，能量色散X射线光谱清楚地显示了铜和硫元素的存在。X射线光电子能谱证实了Cu 2p和S 1s核心能级的峰，分别是Cu(i)和S(ii)的典型特征。所得CuS中空纳米管的布鲁诺尔-埃米特-泰勒（BET）比表面积为2.07 m²/g，孔径分布为27.90 nm。使用CuS中空纳米管，在0.5至100 μmol/L的动态浓度范围内进行非酶法葡萄糖检测，显示出1058.33 μA mM⁻¹cm⁻²的高灵敏度和0.127 μmol/L的检测限（LOD）。所得结果表明，CuS中空纳米管是用于非酶法葡萄糖检测的有前途的候选材料。
