Highly stable binder free CNTs/rGO aerogel electrode for decolouration of methylene blue & palm oil mill effluent via electro-Fenton oxidation process

Muhammad Amirul Nazhif Mohd Nohan, Chin Hua Chia, Aina Shasha Hashimi, Siew Xian Chin, Poi Sim Khiew, Sarani Zakaria, Azima Azmi, Kam Sheng Lau, Nur Fazlinda Razali

Research output: Contribution to journalArticle

Abstract

In this study, single wall carbon nanotubes (CNTs)/reduced graphene oxides (rGO) aerogels were prepared by a one-pot hydrothermal process without using a binder. The produced CNTs/rGO aerogel was used as cathode in electro-Fenton system for the decolouration of methylene blue (MB) and palm oil mill effluent (POME). The addition of CNTs increased the surface area, pore volume and conductivity of the rGO aerogel, which further enhanced their performance as cathode towards the decolouration of MB and POME via electro-Fenton reaction. Complete decolouration of MB using rGO aerogel without CNTs could not be achieved. The effect of electro-Fenton reaction parameters conducted using the aerogel samples including, current, electrolyte concentrations and pH, were investigated accordingly. The CNTs/rGO aerogel electrode also showed high stability and reusability for up to six consecutive treatment cycles for MB. Besides, the CNTs/rGO aerogel also showed good performance in treating POME with 69.8%, 47.6% and 58.1% of reduction in true colour, total organic carbon (TOC) and chemical oxygen demand (COD), respectively, via 60 minutes electro-Fenton reaction. This study showed that CNTs/rGO aerogels with high porosity and stability can be prepared using simple procedure without adding binder. This fully carbon-based aerogel can serve as effective cathode for decolouration of organic dye and effluent.

Original languageEnglish
Pages (from-to)16472-16478
Number of pages7
JournalRSC Advances
Volume9
Issue number29
DOIs
Publication statusPublished - 1 Jan 2019

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Carbon Nanotubes
Palm oil
Aerogels
Graphite
Electrooxidation
Methylene Blue
Oxides
Graphene
Binders
Effluents
Carbon nanotubes
Electrodes
Cathodes
palm oil
Chemical oxygen demand
Organic chemicals
Reusability
Organic carbon
Electrolytes
Coloring Agents

ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)

Cite this

Highly stable binder free CNTs/rGO aerogel electrode for decolouration of methylene blue & palm oil mill effluent via electro-Fenton oxidation process. / Nazhif Mohd Nohan, Muhammad Amirul; Chia, Chin Hua; Hashimi, Aina Shasha; Chin, Siew Xian; Khiew, Poi Sim; Zakaria, Sarani; Azmi, Azima; Lau, Kam Sheng; Razali, Nur Fazlinda.

In: RSC Advances, Vol. 9, No. 29, 01.01.2019, p. 16472-16478.

Research output: Contribution to journalArticle

Nazhif Mohd Nohan, Muhammad Amirul ; Chia, Chin Hua ; Hashimi, Aina Shasha ; Chin, Siew Xian ; Khiew, Poi Sim ; Zakaria, Sarani ; Azmi, Azima ; Lau, Kam Sheng ; Razali, Nur Fazlinda. / Highly stable binder free CNTs/rGO aerogel electrode for decolouration of methylene blue & palm oil mill effluent via electro-Fenton oxidation process. In: RSC Advances. 2019 ; Vol. 9, No. 29. pp. 16472-16478.
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AU - Hashimi, Aina Shasha

AU - Chin, Siew Xian

AU - Khiew, Poi Sim

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