Green synthesis of Au coated on ZnO nanoparticles using orange peel extract and its application for electrochemical detection of formaldehyde

Authors

  • Wiyogo Prio Wicaksono Department of Chemistry, Universitas Islam Indonesia
  • Nabilla Dinnia Department of Chemistry, Faculty of Mathematics and Natural Sciences, Universitas Islam Indonesia
  • Ika Yanti Department of Chemistry, Faculty of Mathematics and Natural Sciences, Universitas Islam Indonesia
  • Gani Purwiandono Department of Chemistry, Faculty of Mathematics and Natural Sciences, Universitas Islam Indonesia
  • Ganjar Fadillah Diploma Program in Analytical Chemistry, Faculty of Mathematics and Natural Sciences, Universitas Islam Indonesia

DOI:

https://doi.org/10.5614/jrdn.2022.2.1.18306

Abstract

We report the facile preparation of Au coated ZnO nanoparticles via a two-step green synthesis route. The aqueous of orange peel extract (OPE) was used both as biocomplexing and bioreducing agents, while the Zn(NO3)2 and HAuCl4 were employed as precursors. Initially, OPE was prepared to synthesize the ZnONPs, followed by the reduction of HAuCl4, generating Au coated on ZnO nanoparticles (Au/ZnONPs). The IR spectra at around 438.95 cm-1 confirmed the presence of Zn-O absorption in the nanoparticles, while it was not observed in the OPE. Further characterization using XRD and SEM-EDX indicated that the spherical of Au was successfully coated on the sponge-like structure of ZnO with the crystalline size of ZnONPs and Au/ZnONPs were 21.30 and 26.67 nm, respectively.  The modified Au/ZnONPs on graphite paste electrode showed the excellent electrochemical detection of formaldehyde solution by the linearity range from 1 to 100 mM (R2=0.9945) with LOD of 10.27 mM and RSD of 0.39%. In addition, the modified electrode showed high selectivity toward formaldehyde, instead of ethanol.

Author Biographies

Nabilla Dinnia, Department of Chemistry, Faculty of Mathematics and Natural Sciences, Universitas Islam Indonesia

Chemistry

Ika Yanti, Department of Chemistry, Faculty of Mathematics and Natural Sciences, Universitas Islam Indonesia

Chemistry

Gani Purwiandono, Department of Chemistry, Faculty of Mathematics and Natural Sciences, Universitas Islam Indonesia

Chemistry

Ganjar Fadillah, Diploma Program in Analytical Chemistry, Faculty of Mathematics and Natural Sciences, Universitas Islam Indonesia

Diploma Program in Analytical Chemistry

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Published

2022-04-12

How to Cite

Wicaksono, W. P., Dinnia, N. ., Yanti, I., Purwiandono, G., & Fadillah, G. (2022). Green synthesis of Au coated on ZnO nanoparticles using orange peel extract and its application for electrochemical detection of formaldehyde . Journal of Research and Development on Nanotechnology, 2(1). https://doi.org/10.5614/jrdn.2022.2.1.18306