Stability investigation of water based exfoliated graphene nanofluids
Until now stability is a crucial technical challenge to prepare a homogeneous dispersion. The main purpose of this work is to experimentally investigate the suspension stability of the exfoliated Graphene (Gr) suspension in deionized water (DW) (Gr/DW). Five different samples were prepared by var...
| Main Authors: | , , , , |
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| Format: | Proceeding Paper |
| Language: | English English |
| Published: |
IOP Publishing Ltd
2019
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| Subjects: | |
| Online Access: | http://irep.iium.edu.my/72442/ http://irep.iium.edu.my/72442/1/72442%20Stability%20investigation%20of%20water%20based.pdf http://irep.iium.edu.my/72442/2/72442%20Stability%20investigation%20of%20water%20based%20SCOPUS.pdf |
| _version_ | 1848787615278432256 |
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| author | Arifutzzaman, A. Ismail, Ahmad Faris Yaacob, Iskandar Idris Alam, Md Zahangir Khan, Ahsan Ali |
| author_facet | Arifutzzaman, A. Ismail, Ahmad Faris Yaacob, Iskandar Idris Alam, Md Zahangir Khan, Ahsan Ali |
| author_sort | Arifutzzaman, A. |
| building | IIUM Repository |
| collection | Online Access |
| description | Until now stability is a crucial technical challenge to prepare a homogeneous
dispersion. The main purpose of this work is to experimentally investigate the suspension
stability of the exfoliated Graphene (Gr) suspension in deionized water (DW) (Gr/DW). Five
different samples were prepared by varying the exfoliated Gr volume fraction from 0.11 to 0.30
% in deionized water. For the observation of sedimentation photo capturing was used as a
primary technique. Finally stability of the exfoliated Gr/DW nanofluids were monitored
quantitatively with the aid of optical absorbance measurements using ultra violet-visible
absorbance spectroscopy. The wavelength range of light was varied from 200 to 800 nm.
Digital photographs of Gr/DW nanofluid samples after preparation of about 25 days shown
homogeneous and visibly there was no sedimentation in the suspensions. The peak absorbance
of Gr/DW nanofluids was appeared at the wavelength of 280 nm. For a certain volume fraction,
absorbance was decreased monotonically with the increasing wavelength. The relative
concentration of the Gr/DW samples was decreased due to slight agglomeration by the
increasing concentration of precipitation with time. After 600 hours (~25 days), the lowest and
maximum precipitation rate were appeared ~ 6 and ~ 10 % for the Gr/DW samples with the
volume fraction of 0.11 and 0.30 % respectively. Different amount of exfoliated Gr loading
affect the rate of sedimentations of exfoliated Gr/DW nanofluids. |
| first_indexed | 2025-11-14T17:27:45Z |
| format | Proceeding Paper |
| id | iium-72442 |
| institution | International Islamic University Malaysia |
| institution_category | Local University |
| language | English English |
| last_indexed | 2025-11-14T17:27:45Z |
| publishDate | 2019 |
| publisher | IOP Publishing Ltd |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | iium-724422019-05-31T03:06:48Z http://irep.iium.edu.my/72442/ Stability investigation of water based exfoliated graphene nanofluids Arifutzzaman, A. Ismail, Ahmad Faris Yaacob, Iskandar Idris Alam, Md Zahangir Khan, Ahsan Ali T Technology (General) Until now stability is a crucial technical challenge to prepare a homogeneous dispersion. The main purpose of this work is to experimentally investigate the suspension stability of the exfoliated Graphene (Gr) suspension in deionized water (DW) (Gr/DW). Five different samples were prepared by varying the exfoliated Gr volume fraction from 0.11 to 0.30 % in deionized water. For the observation of sedimentation photo capturing was used as a primary technique. Finally stability of the exfoliated Gr/DW nanofluids were monitored quantitatively with the aid of optical absorbance measurements using ultra violet-visible absorbance spectroscopy. The wavelength range of light was varied from 200 to 800 nm. Digital photographs of Gr/DW nanofluid samples after preparation of about 25 days shown homogeneous and visibly there was no sedimentation in the suspensions. The peak absorbance of Gr/DW nanofluids was appeared at the wavelength of 280 nm. For a certain volume fraction, absorbance was decreased monotonically with the increasing wavelength. The relative concentration of the Gr/DW samples was decreased due to slight agglomeration by the increasing concentration of precipitation with time. After 600 hours (~25 days), the lowest and maximum precipitation rate were appeared ~ 6 and ~ 10 % for the Gr/DW samples with the volume fraction of 0.11 and 0.30 % respectively. Different amount of exfoliated Gr loading affect the rate of sedimentations of exfoliated Gr/DW nanofluids. IOP Publishing Ltd 2019-03-20 Proceeding Paper PeerReviewed application/pdf en http://irep.iium.edu.my/72442/1/72442%20Stability%20investigation%20of%20water%20based.pdf application/pdf en http://irep.iium.edu.my/72442/2/72442%20Stability%20investigation%20of%20water%20based%20SCOPUS.pdf Arifutzzaman, A. and Ismail, Ahmad Faris and Yaacob, Iskandar Idris and Alam, Md Zahangir and Khan, Ahsan Ali (2019) Stability investigation of water based exfoliated graphene nanofluids. In: 4th International Conference on Mechanical, Automotive and Aerospace Engineering (ICMAAE 2018), 19th-20th September 2018, Kuala Lumpur, Malaysia. https://iopscience.iop.org/article/10.1088/1757-899X/488/1/012002/pdf 10.1088/1757-899X/488/1/012002 |
| spellingShingle | T Technology (General) Arifutzzaman, A. Ismail, Ahmad Faris Yaacob, Iskandar Idris Alam, Md Zahangir Khan, Ahsan Ali Stability investigation of water based exfoliated graphene nanofluids |
| title | Stability investigation of water based exfoliated graphene
nanofluids |
| title_full | Stability investigation of water based exfoliated graphene
nanofluids |
| title_fullStr | Stability investigation of water based exfoliated graphene
nanofluids |
| title_full_unstemmed | Stability investigation of water based exfoliated graphene
nanofluids |
| title_short | Stability investigation of water based exfoliated graphene
nanofluids |
| title_sort | stability investigation of water based exfoliated graphene
nanofluids |
| topic | T Technology (General) |
| url | http://irep.iium.edu.my/72442/ http://irep.iium.edu.my/72442/ http://irep.iium.edu.my/72442/ http://irep.iium.edu.my/72442/1/72442%20Stability%20investigation%20of%20water%20based.pdf http://irep.iium.edu.my/72442/2/72442%20Stability%20investigation%20of%20water%20based%20SCOPUS.pdf |