Koyappayil, Aneesh Seok, Hyunho Choi, Gwan Hyun Chavan, Sachin Yeon, Sangho Son, Sihoon Go, Anna Lee, Jinhyoung Kim, Keon-Woo Lee, Dongho Choi, Hyun-Bin Kim, Hyeong-U Kim, Jin Kon Kim, Taesung Lee, Min-Ho 2024-11-30T06:00:33Z 2024-11-30T06:00:33Z 2024-11-30 2025-03 https://pubs.kist.re.kr/handle/201004/151211 This study demonstrates the fabrication of mesoporous tungsten trioxide (WO3)-decorated flexible polyimide (PI) electrodes for the highly sensitive detection of catechol (CC) and hydroquinone (HQ), two environmental pollutants. Organic-inorganic composite dots are formed on flexible PI electrodes using evaporation-induced self-assembly (EISA) and electrospray methods. The EISA process is induced by a temperature gradient during electrospray, and the heated substrate partially decomposes the organic parts etched by O-2 plasma, creating mesoporous structures. Differential pulse voltammetry and cyclic voltammetry demonstrate a linear correlation between analyte concentration and the electrochemical response. Computational studies support the spontaneous adsorption of CC and HQ molecules on model WO3 surfaces. The proposed sensor shows high sensitivity, a wide linear range, and a low detection limit for both individual and simultaneous determination of CC and HQ. Real sample analysis on river water confirms practical applicability. The WO3-decorated PI electrode presents an efficient and reliable approach for detecting these pollutants, contributing to environmental safety measures. English WILEY Mesoporous WO3-Dot-Decorated Flexible Electrodes for the Determination of Industrial Pollutants Article 10.1002/eem2.12842 1 Energy & Environmental Materials, v.8, no.2 Energy & Environmental Materials 8 2 Y scie scopus 001358351400001 2-s2.0-85208109369 Materials Science, Multidisciplinary Materials Science Article SPECTROPHOTOMETRIC DETERMINATION ELECTROCHEMICAL DETECTION HYDROQUINONE CATECHOL NANOPARTICLES INDUCTION PHENOL SENSOR CELLS catechol flexible sensor hydroquinone mesoporous WO3 simultaneous determination