Photocatalytic degradation of direct green & fast orange red dyes: Electrochemical sensor of lead using cupric oxide nanoparticles synthesized via sonochemical route

Sensors International Pub Date : 2022-01-01 DOI:10.1016/j.sintl.2022.100204

D.A. Raghupathy , G. Ramgopal , C.R. Ravikumar

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引用次数: 2

Abstract

In this study, nanocrystalline cupric oxide was produced using a basic, low-cost sonochemical method (CuO). Through powder X-ray diffraction, the phase and nanocrystalline nature of CuO nanoparticles (NPs) were determined. The Kubelka-Monk function revealed that the band gap of CuO in diffuse reflectance spectra (DRS) is 1.75 eV. Ingenious photocatalysts for the removal of the dyes Direct green (DG) and Fast orange red (F-OR) have been demonstrated to work with CuO NPs. To examine the photocatalytic characteristics of NPs under UV light and sunlight irradiation, Direct Green (DG) and Fast Orange Red (F-OR) dyes were utilised as traditional dyes. Direct green dye was found to be excited at 624.1 and 623.8 nm in UV and sunlight, while Fast orange red dye is excited at 496.8 and 495.1 nm. Lead in 0.1 N HCl solution was detected using the cyclic voltammetry (CV) method with a modified carbon paste electrode (MCPE). According to electrochemical performance, CuO is an advantageous sensing electrode material for an element like lead.

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光催化降解直接绿色和耐晒橙红色染料:声化学合成氧化铜纳米颗粒铅的电化学传感器

在这项研究中，使用一种基本的，低成本的声化学方法(CuO)生产纳米晶氧化铜。通过粉末x射线衍射，确定了CuO纳米颗粒(NPs)的物相和纳米晶性质。Kubelka-Monk函数表明，CuO在漫反射光谱(DRS)中的带隙为1.75 eV。直接绿(DG)和快速橙红(F-OR)光催化剂已被证明可用于CuO NPs。为了研究NPs在紫外光和日光照射下的光催化特性，采用直接绿(DG)和快橙红(F-OR)染料作为传统染料。直接绿色染料在紫外线和日光下的激发波长分别为624.1和623.8 nm，而快速橙红色染料的激发波长分别为496.8和495.1 nm。采用碳浆电极(MCPE)对0.1 N HCl溶液中的铅进行了循环伏安法(CV)检测。从电化学性能来看，氧化铜是铅等元素的一种有利的传感电极材料。

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Sensors International

CiteScore

17.40

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