Tailoring hollow silica spheres for enhanced hydrogen adsorption performance: Role of synthesis parameters
Herein, hollow silica spheres (HSS) are prepared using a sol–gel/emulsion (oil-in-water/ethanol) method where cetyltrimethylammonium bromide (CTAB) is used as a surfactant to stabilize the hydrolysis of tetraethoxysilane (TEOS) oil droplets. The adsorbents are characterized using various physicochem...
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| Format: | Article |
| Language: | English |
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Wiley-Blackwell
2025
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| Online Access: | https://umpir.ump.edu.my/id/eprint/45775/ |
| _version_ | 1848827508264271872 |
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| author | Saeid, Mohammed Faraj Abdulkadir, B. A. Herma Dina, Setiabudi |
| author_facet | Saeid, Mohammed Faraj Abdulkadir, B. A. Herma Dina, Setiabudi |
| author_sort | Saeid, Mohammed Faraj |
| building | UMP Institutional Repository |
| collection | Online Access |
| description | Herein, hollow silica spheres (HSS) are prepared using a sol–gel/emulsion (oil-in-water/ethanol) method where cetyltrimethylammonium bromide (CTAB) is used as a surfactant to stabilize the hydrolysis of tetraethoxysilane (TEOS) oil droplets. The adsorbents are characterized using various physicochemical characterization techniques. It is found that the hollow sphere diameters range from 250 to 400 nm, depending on the ethanol-to-water ratio (E/W), while shell thickness is tuned by CTAB concentration. The Brunauer–Emmett–Teller surface areas ranged from 816 to 1045 m2 g−1, with pore sizes around 3.1 nm according to the Barrett–Joyner–Halenda. Although silica materials show promise for hydrogen storage, their low adsorption capacity limits practical applications. Tailoring synthesis parameters, such as the ethanol-to-water ratio and CTAB concentrations, results in HSS with enhanced pore structures and surface areas, leading to improved hydrogen adsorption. The best hydrogen adsorption of 1.59 wt% is attained at an E/W ratio of 0.4 and a CTAB concentration of 5.3 mM. Post-adsorption analysis revealed a pore-filling mechanism with no structural degradation, confirming the material's stability and reversible hydrogen confinement. These results demonstrate that precise control of synthesis parameters can improve the hydrogen storage capacity of HSS materials, offering a promising strategy for efficient hydrogen adsorbents. |
| first_indexed | 2025-11-15T04:01:50Z |
| format | Article |
| id | ump-45775 |
| institution | Universiti Malaysia Pahang |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-15T04:01:50Z |
| publishDate | 2025 |
| publisher | Wiley-Blackwell |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | ump-457752025-09-30T04:32:26Z https://umpir.ump.edu.my/id/eprint/45775/ Tailoring hollow silica spheres for enhanced hydrogen adsorption performance: Role of synthesis parameters Saeid, Mohammed Faraj Abdulkadir, B. A. Herma Dina, Setiabudi TP Chemical technology Herein, hollow silica spheres (HSS) are prepared using a sol–gel/emulsion (oil-in-water/ethanol) method where cetyltrimethylammonium bromide (CTAB) is used as a surfactant to stabilize the hydrolysis of tetraethoxysilane (TEOS) oil droplets. The adsorbents are characterized using various physicochemical characterization techniques. It is found that the hollow sphere diameters range from 250 to 400 nm, depending on the ethanol-to-water ratio (E/W), while shell thickness is tuned by CTAB concentration. The Brunauer–Emmett–Teller surface areas ranged from 816 to 1045 m2 g−1, with pore sizes around 3.1 nm according to the Barrett–Joyner–Halenda. Although silica materials show promise for hydrogen storage, their low adsorption capacity limits practical applications. Tailoring synthesis parameters, such as the ethanol-to-water ratio and CTAB concentrations, results in HSS with enhanced pore structures and surface areas, leading to improved hydrogen adsorption. The best hydrogen adsorption of 1.59 wt% is attained at an E/W ratio of 0.4 and a CTAB concentration of 5.3 mM. Post-adsorption analysis revealed a pore-filling mechanism with no structural degradation, confirming the material's stability and reversible hydrogen confinement. These results demonstrate that precise control of synthesis parameters can improve the hydrogen storage capacity of HSS materials, offering a promising strategy for efficient hydrogen adsorbents. Wiley-Blackwell 2025 Article PeerReviewed pdf en https://umpir.ump.edu.my/id/eprint/45775/1/Tailoring%20hollow%20silica%20spheres%20for%20enhanced%20hydrogen%20adsorption%20performance.pdf Saeid, Mohammed Faraj and Abdulkadir, B. A. and Herma Dina, Setiabudi (2025) Tailoring hollow silica spheres for enhanced hydrogen adsorption performance: Role of synthesis parameters. Energy Technology (2500078). pp. 1-17. ISSN 2194-4288. (In Press / Online First) (In Press / Online First) https://doi.org/10.1002/ente.202500078 https://doi.org/10.1002/ente.202500078 https://doi.org/10.1002/ente.202500078 |
| spellingShingle | TP Chemical technology Saeid, Mohammed Faraj Abdulkadir, B. A. Herma Dina, Setiabudi Tailoring hollow silica spheres for enhanced hydrogen adsorption performance: Role of synthesis parameters |
| title | Tailoring hollow silica spheres for enhanced hydrogen adsorption performance: Role of synthesis parameters |
| title_full | Tailoring hollow silica spheres for enhanced hydrogen adsorption performance: Role of synthesis parameters |
| title_fullStr | Tailoring hollow silica spheres for enhanced hydrogen adsorption performance: Role of synthesis parameters |
| title_full_unstemmed | Tailoring hollow silica spheres for enhanced hydrogen adsorption performance: Role of synthesis parameters |
| title_short | Tailoring hollow silica spheres for enhanced hydrogen adsorption performance: Role of synthesis parameters |
| title_sort | tailoring hollow silica spheres for enhanced hydrogen adsorption performance: role of synthesis parameters |
| topic | TP Chemical technology |
| url | https://umpir.ump.edu.my/id/eprint/45775/ https://umpir.ump.edu.my/id/eprint/45775/ https://umpir.ump.edu.my/id/eprint/45775/ |