Performance of metal free g-C3N4 reinforced graphene oxide bio-composite for the removal of persistent dyes

Graphitic carbon nitride/graphene oxide (g-C3N4@GO/ Carboxy methylcellulose) based bio-composite was prepared, characterized and tested for the degradation of toxic dyes. Cellulose was extracted from coconut coir/spathe through acid hydrolysis and ultrasonication method. Followed by modification usi...

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Autores principales:	E. Jackcina Stobel Christy, Anitha Pius
Formato:	article
Lenguaje:	EN
Publicado:	KeAi Communications Co., Ltd. 2021
Materias:	Biomass G-C3N4 Cellulose Organic pollutants Photocatalysis Environmental technology. Sanitary engineering TD1-1066
Acceso en línea:	https://doaj.org/article/4991bf1ad94a4bd68921bb6aa627893b
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spelling	oai:doaj.org-article:4991bf1ad94a4bd68921bb6aa627893b2021-11-16T04:11:17ZPerformance of metal free g-C3N4 reinforced graphene oxide bio-composite for the removal of persistent dyes2590-182610.1016/j.enceco.2021.06.003https://doaj.org/article/4991bf1ad94a4bd68921bb6aa627893b2021-01-01T00:00:00Zhttp://www.sciencedirect.com/science/article/pii/S2590182621000163https://doaj.org/toc/2590-1826Graphitic carbon nitride/graphene oxide (g-C3N4@GO/ Carboxy methylcellulose) based bio-composite was prepared, characterized and tested for the degradation of toxic dyes. Cellulose was extracted from coconut coir/spathe through acid hydrolysis and ultrasonication method. Followed by modification using the carboxymethylation process and subsequently loaded with graphene oxide and g-C3N4. The prepared carboxy methylcellulose (CMC), g-C3N4@GO, g-C3N4@GO/CMC biocomposite were analyzed by Fourier transform infrared spectrometer (FTIR), scanning electron microscope (SEM) with energy dispersive X-ray analysis (EDX), X-ray diffractometer (XRD) and thermogravimetric analyzer (TGA). The photocatalytic activity of synthesized biocomposite was investigated for the degradation of basic green 4 (BG 4) and basic blue 9 (BB 9) dyes from aqueous solution using batch experiments under sunlight irradiation. The percentage of degradation of BG4 and BB9 was 94 and 98% under sunlight irradiation for 60 and 50 min in basic medium respectively. The photodegradation process is well described by the Langmuir- Hinshelwood and pseudo-first-order kinetic models. From the active species trapping experiment, it was found that the hole (h+), superoxide radical (O2·−), and hydroxyl radical (OH.) played a significant role in the degradation of dyes and a possible degradation path is discussed with the results obtained from LC-MS. Moreover, the biocomposite showed higher stability and reusability for the degradation of dyes upto five cycles. Thus, the prepared g-C3N4@GO/CMC biocomposite can serve as a sustianable material in the current scenario for removing dyes.E. Jackcina Stobel ChristyAnitha PiusKeAi Communications Co., Ltd.articleBiomassG-C3N4CelluloseOrganic pollutantsPhotocatalysisEnvironmental technology. Sanitary engineeringTD1-1066ENEnvironmental Chemistry and Ecotoxicology, Vol 3, Iss , Pp 220-233 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Biomass G-C3N4 Cellulose Organic pollutants Photocatalysis Environmental technology. Sanitary engineering TD1-1066
spellingShingle	Biomass G-C3N4 Cellulose Organic pollutants Photocatalysis Environmental technology. Sanitary engineering TD1-1066 E. Jackcina Stobel Christy Anitha Pius Performance of metal free g-C3N4 reinforced graphene oxide bio-composite for the removal of persistent dyes
description	Graphitic carbon nitride/graphene oxide (g-C3N4@GO/ Carboxy methylcellulose) based bio-composite was prepared, characterized and tested for the degradation of toxic dyes. Cellulose was extracted from coconut coir/spathe through acid hydrolysis and ultrasonication method. Followed by modification using the carboxymethylation process and subsequently loaded with graphene oxide and g-C3N4. The prepared carboxy methylcellulose (CMC), g-C3N4@GO, g-C3N4@GO/CMC biocomposite were analyzed by Fourier transform infrared spectrometer (FTIR), scanning electron microscope (SEM) with energy dispersive X-ray analysis (EDX), X-ray diffractometer (XRD) and thermogravimetric analyzer (TGA). The photocatalytic activity of synthesized biocomposite was investigated for the degradation of basic green 4 (BG 4) and basic blue 9 (BB 9) dyes from aqueous solution using batch experiments under sunlight irradiation. The percentage of degradation of BG4 and BB9 was 94 and 98% under sunlight irradiation for 60 and 50 min in basic medium respectively. The photodegradation process is well described by the Langmuir- Hinshelwood and pseudo-first-order kinetic models. From the active species trapping experiment, it was found that the hole (h+), superoxide radical (O2·−), and hydroxyl radical (OH.) played a significant role in the degradation of dyes and a possible degradation path is discussed with the results obtained from LC-MS. Moreover, the biocomposite showed higher stability and reusability for the degradation of dyes upto five cycles. Thus, the prepared g-C3N4@GO/CMC biocomposite can serve as a sustianable material in the current scenario for removing dyes.
format	article
author	E. Jackcina Stobel Christy Anitha Pius
author_facet	E. Jackcina Stobel Christy Anitha Pius
author_sort	E. Jackcina Stobel Christy
title	Performance of metal free g-C3N4 reinforced graphene oxide bio-composite for the removal of persistent dyes
title_short	Performance of metal free g-C3N4 reinforced graphene oxide bio-composite for the removal of persistent dyes
title_full	Performance of metal free g-C3N4 reinforced graphene oxide bio-composite for the removal of persistent dyes
title_fullStr	Performance of metal free g-C3N4 reinforced graphene oxide bio-composite for the removal of persistent dyes
title_full_unstemmed	Performance of metal free g-C3N4 reinforced graphene oxide bio-composite for the removal of persistent dyes
title_sort	performance of metal free g-c3n4 reinforced graphene oxide bio-composite for the removal of persistent dyes
publisher	KeAi Communications Co., Ltd.
publishDate	2021
url	https://doaj.org/article/4991bf1ad94a4bd68921bb6aa627893b
work_keys_str_mv	AT ejackcinastobelchristy performanceofmetalfreegc3n4reinforcedgrapheneoxidebiocompositefortheremovalofpersistentdyes AT anithapius performanceofmetalfreegc3n4reinforcedgrapheneoxidebiocompositefortheremovalofpersistentdyes
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Performance of metal free g-C3N4 reinforced graphene oxide bio-composite for the removal of persistent dyes

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