Nitrogen-doped reduced graphene oxide-polyaniline composite materials: hydrothermal treatment, characterisation and supercapacitive properties

Mombeshora, Edwin T.; Muchuweni, Edigar; Davies, Matthew; Martincigh, Bice S.; Nyamori, Vincent O.

doi:10.1039/d2nj05112e

Journal article 352 views 29 downloads

Nitrogen-doped reduced graphene oxide-polyaniline composite materials: hydrothermal treatment, characterisation and supercapacitive properties

Edwin T. Mombeshora, Edigar Muchuweni

, Matthew Davies

, Bice S. Martincigh

, Vincent O. Nyamori

New Journal of Chemistry, Volume: 47, Issue: 7, Pages: 3502 - 3515

Swansea University Author: Matthew Davies

PDF | Version of Record

This article is licensed under a Creative Commons Attribution-NonCommercial 3.0 Unported Licence.
Download (3.85MB)

Check full text

DOI (Published version): 10.1039/d2nj05112e

Abstract

Among other factors, the electrochemical capacitor (EC) properties of graphene oxide (GO) are limited by conductivity issues emanating from high oxygen concentrations. Hence, innovative GO modifications, such as derivatisation and synthesising composites with conducting polymers, are required to boo...

Full description

Published in:	New Journal of Chemistry
ISSN:	1144-0546 1369-9261
Published:	Royal Society of Chemistry (RSC) 2023
Online Access:	Check full text
URI:	https://cronfa.swan.ac.uk/Record/cronfa62643
Tags:	Add Tag No Tags, Be the first to tag this record!

first_indexed	2023-02-10T08:49:38Z
last_indexed	2023-03-07T04:17:49Z
id	cronfa62643
recordtype	SURis
fullrecord	<?xml version="1.0"?><rfc1807><datestamp>2023-03-06T13:59:48.2338182</datestamp><bib-version>v2</bib-version><id>62643</id><entry>2023-02-10</entry><title>Nitrogen-doped reduced graphene oxide-polyaniline composite materials: hydrothermal treatment, characterisation and supercapacitive properties</title><swanseaauthors><author><sid>4ad478e342120ca3434657eb13527636</sid><ORCID>0000-0003-2595-5121</ORCID><firstname>Matthew</firstname><surname>Davies</surname><name>Matthew Davies</name><active>true</active><ethesisStudent>false</ethesisStudent></author></swanseaauthors><date>2023-02-10</date><deptcode>CHEG</deptcode><abstract>Among other factors, the electrochemical capacitor (EC) properties of graphene oxide (GO) are limited by conductivity issues emanating from high oxygen concentrations. Hence, innovative GO modifications, such as derivatisation and synthesising composites with conducting polymers, are required to boost the EC properties. This allows the exploitation of the low material cost associated with carbonaceous materials. Herein, the effect of temperature (70, 130 and 190 °C) on the hydrothermal treatment of a GO/urea mixture (to form nitrogen-doped reduced GO samples U70, U130 and U190 (N-RGO), respectively) was investigated in order to study the resulting physicochemical and EC properties of N-RGO in a K2SO4 electrolyte. Subsequently, the EC properties of the N-RGO obtained from the optimum temperature were investigated in composites with polyaniline (PANI). The functionality of the composites in the electrolytes, namely, K2SO4 (SO42− radius: 258 pm) versus KOH (OH− radius: 133 pm), was compared. The nitrogen at% in GO and N-RGO (U190) was 0.39 and 6.74%, respectively, with corresponding conductivities of 4.61 × 10−7 and 4.17 × 10−1 S cm−1. Compared with GO, U130 achieved the highest increase in specific capacitance (Cs) of 200 times at 10 mV s−1. The 5 wt% PANI composite displayed the highest enhancement of Cs of 14 032% at 50 mV s−1 and 4749% at 5 mV s−1 relative to N-RGO and PANI in K2SO4, respectively. The highest Cs values for NRGO-PANI composites in KOH were more than double those of K2SO4. This work demonstrates that the hydrothermal treatment temperature tailors the physicochemical properties of the doped GO and, together with the anion size of the electrolyte and PANI wt%, synergistically tunes the EC properties of the ultimate PANI-N-RGO composite.</abstract><type>Journal Article</type><journal>New Journal of Chemistry</journal><volume>47</volume><journalNumber>7</journalNumber><paginationStart>3502</paginationStart><paginationEnd>3515</paginationEnd><publisher>Royal Society of Chemistry (RSC)</publisher><placeOfPublication/><isbnPrint/><isbnElectronic/><issnPrint>1144-0546</issnPrint><issnElectronic>1369-9261</issnElectronic><keywords/><publishedDay>17</publishedDay><publishedMonth>1</publishedMonth><publishedYear>2023</publishedYear><publishedDate>2023-01-17</publishedDate><doi>10.1039/d2nj05112e</doi><url/><notes/><college>COLLEGE NANME</college><department>Chemical Engineering</department><CollegeCode>COLLEGE CODE</CollegeCode><DepartmentCode>CHEG</DepartmentCode><institution>Swansea University</institution><apcterm/><funders>This work is based on the research supported mainly by funding through the EPSRC GCRF SUNRISE project (grant number: EP/P032591/1) and partly by the National Research Foundation (NRF) of South Africa. MLD is grateful for the financial support of the EPSRC (EP/S001336/1) and the funding of the SPECIFIC Innovation and Knowledge Centre by the EPSRC [EP/N020863/1], Innovate UK [920036], and the European Regional Development Fund [c80892] through the Welsh Government. The authors wish to thank the University of KwaZulu-Natal (UKZN) and the UKZN Nanotechnology Platform forsupportingthisworkbyproviding the necessary research infrastructure. The authors are also grateful to James Mcgettrick for assistance in X-ray photoelectron spectroscopy analysis.</funders><projectreference/><lastEdited>2023-03-06T13:59:48.2338182</lastEdited><Created>2023-02-10T08:42:31.0693620</Created><path><level id="1">Faculty of Science and Engineering</level><level id="2">School of Engineering and Applied Sciences - Chemical Engineering</level></path><authors><author><firstname>Edwin T.</firstname><surname>Mombeshora</surname><order>1</order></author><author><firstname>Edigar</firstname><surname>Muchuweni</surname><orcid>0000-0002-7520-9154</orcid><order>2</order></author><author><firstname>Matthew</firstname><surname>Davies</surname><orcid>0000-0003-2595-5121</orcid><order>3</order></author><author><firstname>Bice S.</firstname><surname>Martincigh</surname><orcid>0000-0003-1426-5328</orcid><order>4</order></author><author><firstname>Vincent O.</firstname><surname>Nyamori</surname><orcid>0000-0002-8995-4593</orcid><order>5</order></author></authors><documents><document><filename>62643__26521__b9ca17e0e82d47729c16ae5a79169206.pdf</filename><originalFilename>62643.pdf</originalFilename><uploaded>2023-02-10T08:49:00.7089375</uploaded><type>Output</type><contentLength>4033642</contentLength><contentType>application/pdf</contentType><version>Version of Record</version><cronfaStatus>true</cronfaStatus><documentNotes>This article is licensed under a Creative Commons Attribution-NonCommercial 3.0 Unported Licence.</documentNotes><copyrightCorrect>true</copyrightCorrect><language>eng</language><licence>http://creativecommons.org/licenses/by-nc/3.0/</licence></document></documents><OutputDurs/></rfc1807>
spelling	2023-03-06T13:59:48.2338182 v2 62643 2023-02-10 Nitrogen-doped reduced graphene oxide-polyaniline composite materials: hydrothermal treatment, characterisation and supercapacitive properties 4ad478e342120ca3434657eb13527636 0000-0003-2595-5121 Matthew Davies Matthew Davies true false 2023-02-10 CHEG Among other factors, the electrochemical capacitor (EC) properties of graphene oxide (GO) are limited by conductivity issues emanating from high oxygen concentrations. Hence, innovative GO modifications, such as derivatisation and synthesising composites with conducting polymers, are required to boost the EC properties. This allows the exploitation of the low material cost associated with carbonaceous materials. Herein, the effect of temperature (70, 130 and 190 °C) on the hydrothermal treatment of a GO/urea mixture (to form nitrogen-doped reduced GO samples U70, U130 and U190 (N-RGO), respectively) was investigated in order to study the resulting physicochemical and EC properties of N-RGO in a K2SO4 electrolyte. Subsequently, the EC properties of the N-RGO obtained from the optimum temperature were investigated in composites with polyaniline (PANI). The functionality of the composites in the electrolytes, namely, K2SO4 (SO42− radius: 258 pm) versus KOH (OH− radius: 133 pm), was compared. The nitrogen at% in GO and N-RGO (U190) was 0.39 and 6.74%, respectively, with corresponding conductivities of 4.61 × 10−7 and 4.17 × 10−1 S cm−1. Compared with GO, U130 achieved the highest increase in specific capacitance (Cs) of 200 times at 10 mV s−1. The 5 wt% PANI composite displayed the highest enhancement of Cs of 14 032% at 50 mV s−1 and 4749% at 5 mV s−1 relative to N-RGO and PANI in K2SO4, respectively. The highest Cs values for NRGO-PANI composites in KOH were more than double those of K2SO4. This work demonstrates that the hydrothermal treatment temperature tailors the physicochemical properties of the doped GO and, together with the anion size of the electrolyte and PANI wt%, synergistically tunes the EC properties of the ultimate PANI-N-RGO composite. Journal Article New Journal of Chemistry 47 7 3502 3515 Royal Society of Chemistry (RSC) 1144-0546 1369-9261 17 1 2023 2023-01-17 10.1039/d2nj05112e COLLEGE NANME Chemical Engineering COLLEGE CODE CHEG Swansea University This work is based on the research supported mainly by funding through the EPSRC GCRF SUNRISE project (grant number: EP/P032591/1) and partly by the National Research Foundation (NRF) of South Africa. MLD is grateful for the financial support of the EPSRC (EP/S001336/1) and the funding of the SPECIFIC Innovation and Knowledge Centre by the EPSRC [EP/N020863/1], Innovate UK [920036], and the European Regional Development Fund [c80892] through the Welsh Government. The authors wish to thank the University of KwaZulu-Natal (UKZN) and the UKZN Nanotechnology Platform forsupportingthisworkbyproviding the necessary research infrastructure. The authors are also grateful to James Mcgettrick for assistance in X-ray photoelectron spectroscopy analysis. 2023-03-06T13:59:48.2338182 2023-02-10T08:42:31.0693620 Faculty of Science and Engineering School of Engineering and Applied Sciences - Chemical Engineering Edwin T. Mombeshora 1 Edigar Muchuweni 0000-0002-7520-9154 2 Matthew Davies 0000-0003-2595-5121 3 Bice S. Martincigh 0000-0003-1426-5328 4 Vincent O. Nyamori 0000-0002-8995-4593 5 62643__26521__b9ca17e0e82d47729c16ae5a79169206.pdf 62643.pdf 2023-02-10T08:49:00.7089375 Output 4033642 application/pdf Version of Record true This article is licensed under a Creative Commons Attribution-NonCommercial 3.0 Unported Licence. true eng http://creativecommons.org/licenses/by-nc/3.0/
title	Nitrogen-doped reduced graphene oxide-polyaniline composite materials: hydrothermal treatment, characterisation and supercapacitive properties
spellingShingle	Nitrogen-doped reduced graphene oxide-polyaniline composite materials: hydrothermal treatment, characterisation and supercapacitive properties Matthew Davies
title_short	Nitrogen-doped reduced graphene oxide-polyaniline composite materials: hydrothermal treatment, characterisation and supercapacitive properties
title_full	Nitrogen-doped reduced graphene oxide-polyaniline composite materials: hydrothermal treatment, characterisation and supercapacitive properties
title_fullStr	Nitrogen-doped reduced graphene oxide-polyaniline composite materials: hydrothermal treatment, characterisation and supercapacitive properties
title_full_unstemmed	Nitrogen-doped reduced graphene oxide-polyaniline composite materials: hydrothermal treatment, characterisation and supercapacitive properties
title_sort	Nitrogen-doped reduced graphene oxide-polyaniline composite materials: hydrothermal treatment, characterisation and supercapacitive properties
author_id_str_mv	4ad478e342120ca3434657eb13527636
author_id_fullname_str_mv	4ad478e342120ca3434657eb13527636_***_Matthew Davies
author	Matthew Davies
author2	Edwin T. Mombeshora Edigar Muchuweni Matthew Davies Bice S. Martincigh Vincent O. Nyamori
format	Journal article
container_title	New Journal of Chemistry
container_volume	47
container_issue	7
container_start_page	3502
publishDate	2023
institution	Swansea University
issn	1144-0546 1369-9261
doi_str_mv	10.1039/d2nj05112e
publisher	Royal Society of Chemistry (RSC)
college_str	Faculty of Science and Engineering
hierarchytype
hierarchy_top_id	facultyofscienceandengineering
hierarchy_top_title	Faculty of Science and Engineering
hierarchy_parent_id	facultyofscienceandengineering
hierarchy_parent_title	Faculty of Science and Engineering
department_str	School of Engineering and Applied Sciences - Chemical Engineering{{{_:::_}}}Faculty of Science and Engineering{{{_:::_}}}School of Engineering and Applied Sciences - Chemical Engineering
document_store_str	1
active_str	0
description	Among other factors, the electrochemical capacitor (EC) properties of graphene oxide (GO) are limited by conductivity issues emanating from high oxygen concentrations. Hence, innovative GO modifications, such as derivatisation and synthesising composites with conducting polymers, are required to boost the EC properties. This allows the exploitation of the low material cost associated with carbonaceous materials. Herein, the effect of temperature (70, 130 and 190 °C) on the hydrothermal treatment of a GO/urea mixture (to form nitrogen-doped reduced GO samples U70, U130 and U190 (N-RGO), respectively) was investigated in order to study the resulting physicochemical and EC properties of N-RGO in a K2SO4 electrolyte. Subsequently, the EC properties of the N-RGO obtained from the optimum temperature were investigated in composites with polyaniline (PANI). The functionality of the composites in the electrolytes, namely, K2SO4 (SO42− radius: 258 pm) versus KOH (OH− radius: 133 pm), was compared. The nitrogen at% in GO and N-RGO (U190) was 0.39 and 6.74%, respectively, with corresponding conductivities of 4.61 × 10−7 and 4.17 × 10−1 S cm−1. Compared with GO, U130 achieved the highest increase in specific capacitance (Cs) of 200 times at 10 mV s−1. The 5 wt% PANI composite displayed the highest enhancement of Cs of 14 032% at 50 mV s−1 and 4749% at 5 mV s−1 relative to N-RGO and PANI in K2SO4, respectively. The highest Cs values for NRGO-PANI composites in KOH were more than double those of K2SO4. This work demonstrates that the hydrothermal treatment temperature tailors the physicochemical properties of the doped GO and, together with the anion size of the electrolyte and PANI wt%, synergistically tunes the EC properties of the ultimate PANI-N-RGO composite.
published_date	2023-01-17T04:22:25Z
_version_	1763754477625540608
score	11.016235

Nitrogen-doped reduced graphene oxide-polyaniline composite materials: hydrothermal treatment, characterisation and supercapacitive properties

Similar Items