Synthesis and Characterisation of Carbon Aerogel Derived from Carboxymethyl Cellulose as a Hydrogen Storage Material
A direct, simple, and low-cost approach in synthesising carbon aerogel (CA) composites has been demonstrated in this research through the carbonisation of sodium carboxymethyl cellulose aerogels via sol-gel and freeze-drying processes. Magnesium ions are used as an enhancer for CA among several m...
Saved in:
| id |
my-usim-ddms-12646 |
|---|---|
| record_format |
uketd_dc |
| institution |
Universiti Sains Islam Malaysia |
| collection |
USIM Institutional Repository |
| language |
en_US |
| topic |
carbon aerogel carboxymethyl cellulose carbonisation hydrogen storage |
| spellingShingle |
carbon aerogel carboxymethyl cellulose carbonisation hydrogen storage Ahmad Solehi Ab Sabar Synthesis and Characterisation of Carbon Aerogel Derived from Carboxymethyl Cellulose as a Hydrogen Storage Material |
| description |
A direct, simple, and low-cost approach in synthesising carbon aerogel (CA)
composites has been demonstrated in this research through the carbonisation of sodium
carboxymethyl cellulose aerogels via sol-gel and freeze-drying processes. Magnesium
ions are used as an enhancer for CA among several metal ions including manganese,
nickel, and zinc in the preparation step. Magnesium ions shows the best characteristic
of CA enhancer as it does not lose during carbonisation at different concentration. The
structure and morphology of carbon aerogel-magnesium (CA-Mg) composites are
characterised using field emission scanning electron microscopy (FESEM), Fourier
transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), and Brunauer-
Emmett-Teller (BET) techniques. The ability of CA-Mg composites to act as a
hydrogen storage material is analysed using temperature programmed desorption
analysis. The FTIR spectra of CA-Mg composites show the completion of
carbonisation, because less peak is observed compared to pure CA, as the presence of
Mg2+ becomes the main factor in the completion of carbonisation. XRD analysis of
CA-Mg composites shows the diffraction peaks of MgO (Periclase) which indicate the
generation of MgO during carbonisation process of CA-Mg composites and become
the reason for the disappearing of OH peak in the FTIR spectra which means, MgCl2
has been fully decomposed into MgO. Thus, the composites exhibit the characteristic
features of CA and MgO. The CA-Mg composites are made up of porous structures
with a high specific surface area of 101.4407 m2/g and 0.002 mol of Mg2+ is the
optimum concentration for synthesising CA-Mg composites. As a potential candidate
for a hydrogen storage material, the CA-Mg composites showed an initial
dehydrogenation temperature of 377.22 °C where they desorbed the maximum amount
of hydrogen gas at 0.168%. This study emphasises the potential for using CA as a
hydrogen storage material, which fulfils the seventh goal of the Sustainable
Development Goals (SDG): Affordable and clean energy, as well as Department of
Energy (DOE)’s goal of using carbon-based materials |
| format |
Thesis |
| author |
Ahmad Solehi Ab Sabar |
| author_facet |
Ahmad Solehi Ab Sabar |
| author_sort |
Ahmad Solehi Ab Sabar |
| title |
Synthesis and Characterisation of Carbon Aerogel Derived from Carboxymethyl Cellulose as a Hydrogen Storage Material |
| title_short |
Synthesis and Characterisation of Carbon Aerogel Derived from Carboxymethyl Cellulose as a Hydrogen Storage Material |
| title_full |
Synthesis and Characterisation of Carbon Aerogel Derived from Carboxymethyl Cellulose as a Hydrogen Storage Material |
| title_fullStr |
Synthesis and Characterisation of Carbon Aerogel Derived from Carboxymethyl Cellulose as a Hydrogen Storage Material |
| title_full_unstemmed |
Synthesis and Characterisation of Carbon Aerogel Derived from Carboxymethyl Cellulose as a Hydrogen Storage Material |
| title_sort |
synthesis and characterisation of carbon aerogel derived from carboxymethyl cellulose as a hydrogen storage material |
| granting_institution |
Universiti Sains Islam Malaysia |
| url |
https://oarep.usim.edu.my/bitstreams/928597a9-4d6e-4ab5-8ade-1e757b158965/download https://oarep.usim.edu.my/bitstreams/d9996182-8584-42b1-b1c8-79aa51bb34cc/download https://oarep.usim.edu.my/bitstreams/6fd805b1-a132-4d2d-9ca1-ca33af2b5633/download https://oarep.usim.edu.my/bitstreams/c1ecf426-56ef-46ae-9ab0-6680da167111/download https://oarep.usim.edu.my/bitstreams/94488aa4-ab66-41ed-9f28-24aa8e0554c3/download https://oarep.usim.edu.my/bitstreams/bad4ebb0-5e69-421b-8b81-5067b31b3a63/download https://oarep.usim.edu.my/bitstreams/ca733174-bf55-44c4-ab1f-0ae9ab3432fd/download https://oarep.usim.edu.my/bitstreams/8724ae98-375b-490f-a1eb-71e9ea2a5482/download https://oarep.usim.edu.my/bitstreams/fb5b50b5-69d1-454d-a7c8-cece1e98e446/download https://oarep.usim.edu.my/bitstreams/5844ee00-4184-424b-91b6-865fbf408779/download |
| _version_ |
1812444722964201472 |
| spelling |
my-usim-ddms-126462024-05-29T19:03:00Z Synthesis and Characterisation of Carbon Aerogel Derived from Carboxymethyl Cellulose as a Hydrogen Storage Material Ahmad Solehi Ab Sabar A direct, simple, and low-cost approach in synthesising carbon aerogel (CA) composites has been demonstrated in this research through the carbonisation of sodium carboxymethyl cellulose aerogels via sol-gel and freeze-drying processes. Magnesium ions are used as an enhancer for CA among several metal ions including manganese, nickel, and zinc in the preparation step. Magnesium ions shows the best characteristic of CA enhancer as it does not lose during carbonisation at different concentration. The structure and morphology of carbon aerogel-magnesium (CA-Mg) composites are characterised using field emission scanning electron microscopy (FESEM), Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), and Brunauer- Emmett-Teller (BET) techniques. The ability of CA-Mg composites to act as a hydrogen storage material is analysed using temperature programmed desorption analysis. The FTIR spectra of CA-Mg composites show the completion of carbonisation, because less peak is observed compared to pure CA, as the presence of Mg2+ becomes the main factor in the completion of carbonisation. XRD analysis of CA-Mg composites shows the diffraction peaks of MgO (Periclase) which indicate the generation of MgO during carbonisation process of CA-Mg composites and become the reason for the disappearing of OH peak in the FTIR spectra which means, MgCl2 has been fully decomposed into MgO. Thus, the composites exhibit the characteristic features of CA and MgO. The CA-Mg composites are made up of porous structures with a high specific surface area of 101.4407 m2/g and 0.002 mol of Mg2+ is the optimum concentration for synthesising CA-Mg composites. As a potential candidate for a hydrogen storage material, the CA-Mg composites showed an initial dehydrogenation temperature of 377.22 °C where they desorbed the maximum amount of hydrogen gas at 0.168%. This study emphasises the potential for using CA as a hydrogen storage material, which fulfils the seventh goal of the Sustainable Development Goals (SDG): Affordable and clean energy, as well as Department of Energy (DOE)’s goal of using carbon-based materials Universiti Sains Islam Malaysia 2023-09 Thesis en_US https://oarep.usim.edu.my/handle/123456789/12646 https://oarep.usim.edu.my/bitstreams/928597a9-4d6e-4ab5-8ade-1e757b158965/download 93990568991a5e4a926b8d8c03a08b93 https://oarep.usim.edu.my/bitstreams/d9996182-8584-42b1-b1c8-79aa51bb34cc/download 2d61d2d8436621d24e851ccd76e96f89 https://oarep.usim.edu.my/bitstreams/6fd805b1-a132-4d2d-9ca1-ca33af2b5633/download 52e5535acd7a951a58c6e5798a3bd72f https://oarep.usim.edu.my/bitstreams/c1ecf426-56ef-46ae-9ab0-6680da167111/download 257c2f2d7a259f1b4eed7b6a0d5c9672 https://oarep.usim.edu.my/bitstreams/94488aa4-ab66-41ed-9f28-24aa8e0554c3/download 0ab90e1c41fc1911f8dc5a6544bc91e5 https://oarep.usim.edu.my/bitstreams/bad4ebb0-5e69-421b-8b81-5067b31b3a63/download 7bbfb7e0181240b2198f4cc3a5c5dbd0 https://oarep.usim.edu.my/bitstreams/ca733174-bf55-44c4-ab1f-0ae9ab3432fd/download 332fa3ed62f1e50c0e2b399d71b1f0e6 https://oarep.usim.edu.my/bitstreams/8724ae98-375b-490f-a1eb-71e9ea2a5482/download dfb16e81c06ebe6f6feaa02b5f4d98c9 https://oarep.usim.edu.my/bitstreams/fb5b50b5-69d1-454d-a7c8-cece1e98e446/download 31224b46f75c352f70ee3f2222302393 https://oarep.usim.edu.my/bitstreams/5844ee00-4184-424b-91b6-865fbf408779/download 6a256b997f215bb11978d57d8a5916b0 https://oarep.usim.edu.my/bitstreams/d028246d-b279-4498-9902-d8994e735a17/download 8a4605be74aa9ea9d79846c1fba20a33 https://oarep.usim.edu.my/bitstreams/c5571738-083d-4537-aa42-81ebbbf4f733/download 68b329da9893e34099c7d8ad5cb9c940 https://oarep.usim.edu.my/bitstreams/aa4416ed-4831-4ce5-ac20-25bda853e323/download c56e0b8d9741174001217ffad0088780 https://oarep.usim.edu.my/bitstreams/64f0a7b6-026b-4ba6-ae02-32b16c519a05/download b9ac3e320653da4128b594ba2d92ff48 https://oarep.usim.edu.my/bitstreams/7d61972f-9684-47f8-9e17-284dd39bab0d/download a49d488a35467c026a3fc971c0e1edc5 https://oarep.usim.edu.my/bitstreams/3e5a57ac-8be3-4e31-b3e8-cc0b68ca82cf/download 156167510350a7dce7df6ff7b9645f2e https://oarep.usim.edu.my/bitstreams/977ea7ac-f612-4337-b455-4d98ac3397cb/download 71ef308522966f681703d3b94303b633 https://oarep.usim.edu.my/bitstreams/cb7706dc-50da-4383-b602-eb6f1f34ad85/download 228f1e670ea7d675414631ead6aa3b66 https://oarep.usim.edu.my/bitstreams/1a2f83f4-a7dd-4f61-a0a2-24e32ea1518b/download ec628d80077085cfa61421ae0ac25da5 https://oarep.usim.edu.my/bitstreams/733de302-8b08-40ee-b4b8-4582b84199cb/download caae982ae354de95be2051753c1f81e9 https://oarep.usim.edu.my/bitstreams/ee9533bf-0b59-4b4b-97f1-9326d93fbba3/download e72a0ae2c8608c0d2916429a0c3d8288 carbon aerogel, carboxymethyl cellulose, carbonisation, hydrogen storage |