Synthesis of zinc selenide/graphene oxide composite via direct and indirect hydrothermal method

Lee Han Kee, Josephine Liew Ying Chyi, Zainal Abidin Talib, Mohammad Shuhazlly Mamat, Janet Lim Hong Ngee, Fakhrurrazi Ashari, Leong Yong Jian, Chang Fu Dee, Burhanuddin Yeop Majlis

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

Zinc selenide/graphene oxide (ZnSe/GO) composite is synthesized using hydrothermal method. Two different methods such as direct and indirect route have been investigated to form the ZnSe/GO composite. In this research, the graphene oxide used was in sheet and liquid form. The synthesized composite was then characterized using X-ray diffraction (XRD) for phase identification, field emission scanning electron microscopy (FESEM) for morphology analysis and ultravioletvisible spectroscopy (U V-Vis) for optical properties. ZnSe/GO composite showed absorption peak ranging from 460 to 480 nm with the optical band gap obtained through Tauc equation. The optical band gap of the ZnSe/GO composite has been tuned down to a smaller value as compared to the bulk ZnSe compound. The optical band gap has been reduced to around 2.53 eV when liquid graphene oxide was used while around 2.23 to 2.32 eV when graphene oxide sheet was used. The purity of ZnSe/GO composite synthesis via indirect hydrothermal method is higher than those synthesized via direct hydrothermal method. The type of graphene oxide will affect the morphology of the composite where the ZnSe compound was either wrapped by tiny thorn-like substance or graphene oxide layer.

Original languageEnglish
Pages (from-to)1201-1206
Number of pages6
JournalSains Malaysiana
Volume45
Issue number8
Publication statusPublished - 1 Aug 2016

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Graphite
Oxides
Composite materials
Optical band gaps
zinc selenide
Liquids
Field emission
Optical properties
Spectroscopy
X ray diffraction
Scanning electron microscopy

Keywords

  • Band gap tuning
  • Morphology
  • UV-vis spectroscopy
  • X-ray diffraction

ASJC Scopus subject areas

  • General

Cite this

Kee, L. H., Chyi, J. L. Y., Talib, Z. A., Mamat, M. S., Ngee, J. L. H., Ashari, F., ... Yeop Majlis, B. (2016). Synthesis of zinc selenide/graphene oxide composite via direct and indirect hydrothermal method. Sains Malaysiana, 45(8), 1201-1206.

Synthesis of zinc selenide/graphene oxide composite via direct and indirect hydrothermal method. / Kee, Lee Han; Chyi, Josephine Liew Ying; Talib, Zainal Abidin; Mamat, Mohammad Shuhazlly; Ngee, Janet Lim Hong; Ashari, Fakhrurrazi; Jian, Leong Yong; Dee, Chang Fu; Yeop Majlis, Burhanuddin.

In: Sains Malaysiana, Vol. 45, No. 8, 01.08.2016, p. 1201-1206.

Research output: Contribution to journalArticle

Kee, LH, Chyi, JLY, Talib, ZA, Mamat, MS, Ngee, JLH, Ashari, F, Jian, LY, Dee, CF & Yeop Majlis, B 2016, 'Synthesis of zinc selenide/graphene oxide composite via direct and indirect hydrothermal method', Sains Malaysiana, vol. 45, no. 8, pp. 1201-1206.
Kee LH, Chyi JLY, Talib ZA, Mamat MS, Ngee JLH, Ashari F et al. Synthesis of zinc selenide/graphene oxide composite via direct and indirect hydrothermal method. Sains Malaysiana. 2016 Aug 1;45(8):1201-1206.
Kee, Lee Han ; Chyi, Josephine Liew Ying ; Talib, Zainal Abidin ; Mamat, Mohammad Shuhazlly ; Ngee, Janet Lim Hong ; Ashari, Fakhrurrazi ; Jian, Leong Yong ; Dee, Chang Fu ; Yeop Majlis, Burhanuddin. / Synthesis of zinc selenide/graphene oxide composite via direct and indirect hydrothermal method. In: Sains Malaysiana. 2016 ; Vol. 45, No. 8. pp. 1201-1206.
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