Flower-like Bi2S3 nanostructures grown on nitrogen-doped reduced graphene oxide for electrochemical determination of hydrogen peroxide

Deivasigamani Ranjith Kumar; Srinivasan Kesavan; Marjorie Lara Baynosa; Van Quang Nguyen; Jae-Jin Shim

doi:10.1016/j.jcis.2018.06.069

Flower-like Bi₂S₃ nanostructures grown on nitrogen-doped reduced graphene oxide for electrochemical determination of hydrogen peroxide

J Colloid Interface Sci. 2018 Nov 15:530:361-371. doi: 10.1016/j.jcis.2018.06.069. Epub 2018 Jun 25.

Authors

Deivasigamani Ranjith Kumar¹, Srinivasan Kesavan², Marjorie Lara Baynosa¹, Van Quang Nguyen¹, Jae-Jin Shim³

Affiliations

¹ School of Chemical Engineering, Yeungnam University, 280 Daehak-ro, Gyeongsan, Gyeongbuk 38541, Republic of Korea.
² School of Chemical Engineering, Yeungnam University, 280 Daehak-ro, Gyeongsan, Gyeongbuk 38541, Republic of Korea; Electrodics and Electrocatalysis Division, CSIR-Central Electrochemical Research Institute, Karaikudi 630 003, India.
³ School of Chemical Engineering, Yeungnam University, 280 Daehak-ro, Gyeongsan, Gyeongbuk 38541, Republic of Korea. Electronic address: jjshim@yu.ac.kr.

PMID: 29982029
DOI: 10.1016/j.jcis.2018.06.069

Abstract

This paper reports a facile solvothermal method for the synthesis of Bi₂S₃ flower-like nanostructures grown in situ on a nitrogen-doped reduced graphene oxide (Bi₂S₃@N-G) surface. Thiourea was used as the nitrogen source and reducing agent for graphene oxide. The surface morphology of the as-prepared Bi₂S₃@N-G composites was analyzed by field emission scanning electron microscopy and transmission electron microscopy. The crystalline structure and surface chemical states were examined by X-ray diffraction and X-ray photoelectron spectroscopy, respectively. The as-prepared Bi₂S₃@N-G composite was deposited on a glassy carbon (GC) electrode, and the modified electrode was employed for the electrocatalytic detection of H₂O₂. The calculated diffusion coefficient and catalytic rate constant of the Bi₂S₃@N-G modified electrode were 4.9 × 10^-6 cm² s^-1 and 5671 M^-1 s^-1, respectively. The Bi₂S₃@N-G/GC electrode demonstrated a wide concentration range for H₂O₂, from 10 to 42,960 μM, with a sensitivity of 0.1535 μA μM^-1 and an obtained limit of detection of 1.9 μM.

Keywords: Amperometry; Bi(2)S(3); Hydrogen peroxide; X-ray photoelectron spectroscopy.