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Rice husk derived graphene-like material: Activation with phosphoric acid in the absence of inert gas for hydrogen gas storage

In this study, the effect of concentration of phosphoric acid (H3PO4) towards the physicochemical properties of rice husk derived graphene (GRHA) in the absence of inert gas was investigated. From TGA analysis, it was found that GRHA 1:3 possessed the highest weight loss (24.66%) due to the highest...

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Main Authors: Tajul Arifin, Nur Fatihah, Yusof, Norhaniza, Wan Salleh, Wan Norhayati
Format: Article
Published: Elsevier Ltd 2021
Subjects:
TP Chemical technology
Online Access:http://eprints.utm.my/id/eprint/95119/
http://dx.doi.org/10.1016/j.ijhydene.2021.02.051
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spelling my.utm.951192022-04-29T22:24:16Z http://eprints.utm.my/id/eprint/95119/ Rice husk derived graphene-like material: Activation with phosphoric acid in the absence of inert gas for hydrogen gas storage Tajul Arifin, Nur Fatihah Yusof, Norhaniza Wan Salleh, Wan Norhayati TP Chemical technology In this study, the effect of concentration of phosphoric acid (H3PO4) towards the physicochemical properties of rice husk derived graphene (GRHA) in the absence of inert gas was investigated. From TGA analysis, it was found that GRHA 1:3 possessed the highest weight loss (24.66%) due to the highest reactivity towards H3PO4. The FTIR shows that graphene-like material was obtained as the –OH groups were vanished in GRHA structure after activation. Raman spectroscopy and XRD analysis indicated that the produced GRHA is in amorphous state and has few layers of graphene. GRHA 1:3 showed the greatest improvement in their porous structure including the highest surface area (315.07 m2/g) with the largest pore volume (0.2069 cm3/g) as compared to other samples. From the static adsorption test, it was confirmed that GRHA 1:3 stored the highest amount of hydrogen compared to other samples with 1.95 wt % contributed by its excellent porosity and surface area. To further understand the kinetics of hydrogen adsorption on GRHA, pseudo-first model and pseudo-second model was plotted. Pseudo second model was the best fitted model which indicated that the gas molecule adsorbed in the GRHA material via chemisorption. Additionally, from the kinetic study it was found that the adsorption process of GRHA 1:3 was controlled by multi-step adsorption process. Elsevier Ltd 2021 Article PeerReviewed Tajul Arifin, Nur Fatihah and Yusof, Norhaniza and Wan Salleh, Wan Norhayati (2021) Rice husk derived graphene-like material: Activation with phosphoric acid in the absence of inert gas for hydrogen gas storage. International Journal of Hydrogen Energy, 46 (60). pp. 31084-31095. ISSN 0360-3199 http://dx.doi.org/10.1016/j.ijhydene.2021.02.051
institution Universiti Teknologi Malaysia
building UTM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Teknologi Malaysia
content_source UTM Institutional Repository
url_provider http://eprints.utm.my/
topic TP Chemical technology
spellingShingle TP Chemical technology
Tajul Arifin, Nur Fatihah
Yusof, Norhaniza
Wan Salleh, Wan Norhayati
Rice husk derived graphene-like material: Activation with phosphoric acid in the absence of inert gas for hydrogen gas storage
description In this study, the effect of concentration of phosphoric acid (H3PO4) towards the physicochemical properties of rice husk derived graphene (GRHA) in the absence of inert gas was investigated. From TGA analysis, it was found that GRHA 1:3 possessed the highest weight loss (24.66%) due to the highest reactivity towards H3PO4. The FTIR shows that graphene-like material was obtained as the –OH groups were vanished in GRHA structure after activation. Raman spectroscopy and XRD analysis indicated that the produced GRHA is in amorphous state and has few layers of graphene. GRHA 1:3 showed the greatest improvement in their porous structure including the highest surface area (315.07 m2/g) with the largest pore volume (0.2069 cm3/g) as compared to other samples. From the static adsorption test, it was confirmed that GRHA 1:3 stored the highest amount of hydrogen compared to other samples with 1.95 wt % contributed by its excellent porosity and surface area. To further understand the kinetics of hydrogen adsorption on GRHA, pseudo-first model and pseudo-second model was plotted. Pseudo second model was the best fitted model which indicated that the gas molecule adsorbed in the GRHA material via chemisorption. Additionally, from the kinetic study it was found that the adsorption process of GRHA 1:3 was controlled by multi-step adsorption process.
format Article
author Tajul Arifin, Nur Fatihah
Yusof, Norhaniza
Wan Salleh, Wan Norhayati
author_facet Tajul Arifin, Nur Fatihah
Yusof, Norhaniza
Wan Salleh, Wan Norhayati
author_sort Tajul Arifin, Nur Fatihah
title Rice husk derived graphene-like material: Activation with phosphoric acid in the absence of inert gas for hydrogen gas storage
title_short Rice husk derived graphene-like material: Activation with phosphoric acid in the absence of inert gas for hydrogen gas storage
title_full Rice husk derived graphene-like material: Activation with phosphoric acid in the absence of inert gas for hydrogen gas storage
title_fullStr Rice husk derived graphene-like material: Activation with phosphoric acid in the absence of inert gas for hydrogen gas storage
title_full_unstemmed Rice husk derived graphene-like material: Activation with phosphoric acid in the absence of inert gas for hydrogen gas storage
title_sort rice husk derived graphene-like material: activation with phosphoric acid in the absence of inert gas for hydrogen gas storage
publisher Elsevier Ltd
publishDate 2021
url http://eprints.utm.my/id/eprint/95119/
http://dx.doi.org/10.1016/j.ijhydene.2021.02.051
_version_ 1732945434478903296
score 13.211869

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