Enticing 3D peony-like ZnGa2O4 microstructures for electrochemical detection of N, N-dimethylmethanamide chemical

Eun-Bi Kim; M Imran; M Shaheer Akhtar; Hyung-Shik Shin; Sadia Ameen

doi:10.1016/j.jhazmat.2020.124069

Enticing 3D peony-like ZnGa₂O₄ microstructures for electrochemical detection of N, N-dimethylmethanamide chemical

J Hazard Mater. 2021 Feb 15;404(Pt A):124069. doi: 10.1016/j.jhazmat.2020.124069. Epub 2020 Sep 22.

Authors

Eun-Bi Kim¹, M Imran², M Shaheer Akhtar³, Hyung-Shik Shin⁴, Sadia Ameen⁵

Affiliations

¹ Energy Materials & Surface Science Laboratory, Solar Energy Research Center, School of Chemical Engineering, Jeonbuk National University, Jeonju 54896, Republic of Korea; Advanced Materials and Devices Laboratory, Department of Bio-Convergence Science, Jeongeup Campus, Jeonbuk National University, 56212, Republic of Korea.
² Advanced Materials and Devices Laboratory, Department of Bio-Convergence Science, Jeongeup Campus, Jeonbuk National University, 56212, Republic of Korea.
³ New & Renewable Energy Material Development Center (NewREC), Jeonbuk National University, Jeonbuk, Republic of Korea.
⁴ Energy Materials & Surface Science Laboratory, Solar Energy Research Center, School of Chemical Engineering, Jeonbuk National University, Jeonju 54896, Republic of Korea; Korea Basic Science Institute (KBSI), 169-148 Gwahak-ro, Yuseong-gu, Daejeon 34133, Republic of Korea. Electronic address: hsshin@jbnu.ac.kr.
⁵ Advanced Materials and Devices Laboratory, Department of Bio-Convergence Science, Jeongeup Campus, Jeonbuk National University, 56212, Republic of Korea. Electronic address: sadiaameen@jbnu.ac.kr.

PMID: 33059249
DOI: 10.1016/j.jhazmat.2020.124069

Abstract

We demonstrate the hydrothermal synthesis of three dimension (3D) peony-like morphology of zinc gallate (ZnGa₂O₄), dominated by assembled nanosheets and applied as electrode material in electrochemical detection of N,N-dimethylmethanamide chemical. The crystalline, structural and compositional characterizations deduced the formation of high quality ZnGa₂O₄ with spinal crystal structure. Peony-like 3D ZnGa₂O₄ was benefited by a high surface area of ~62.3 m² g^-1, good pore distribution (mean pore diameter of ~23.3 nm) and large pore volume of ~0.3622 cm³ g^-1. N,N-dimethylmethanamide chemical sensor based on peony-like 3D ZnGa₂O₄ electrode presented a linear curve in the working dynamic range of 1 nM-10 mM. Significantly improved chemical sensitivity of ~154.2 mA mM^-1 cm^-2 with low detection limit value of ~0.14 μM were achieved. The fabricated sensor based on peony-like 3D ZnGa₂O₄ electrode endorsed real sample analysis and ascertained the selectivity towards N,N-dimethylmethanamide chemical by analyzing a range of interfering analytes, viz. ethanol, tetrahydrofuran, methyl amine chemical.

Keywords: Electrochemical properties; Electrode; Environment protection; Nanostructures; Ternary metal oxide.

Publication types

Research Support, Non-U.S. Gov't