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Chin SX, Lau KS, Ginting RT, Tan ST, Khiew PS, Chia CH, Wongchoosuk C. Facile Preparation of Carbon Nanotubes/Cellulose Nanofibrils/Manganese Dioxide Nanowires Electrode for Improved Solid-Sate Supercapacitor Performances. Polymers (Basel) 2023; 15:3758. [PMID: 37765612 PMCID: PMC10537227 DOI: 10.3390/polym15183758] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2023] [Revised: 09/06/2023] [Accepted: 09/11/2023] [Indexed: 09/29/2023] Open
Abstract
Wearable energy storage devices require high mechanical stability and high-capacitance flexible electrodes. In this study, we design a flexible supercapacitor electrode consisting of 1-dimensional carbon nanotubes (CNT), cellulose nanofibrils (CNF), and manganese dioxide nanowires (MnO2 NWs). The flexible and conductive CNT/CNF-MnO2 NWs suspension was first prepared via ultrasonic dispersion approach, followed by vacuum filtration and hot press to form the composite paper electrode. The morphological studies show entanglement between CNT and CNF, which supports the mechanical properties of the composite. The CNT/CNF-MnO2 NWs electrode exhibits lower resistance when subjected to various bending angles (-120-+120°) compared to the CNT/CNF electrode. In addition, the solid-state supercapacitor also shows a high energy density of 38 μWh cm-2 and capacitance retention of 83.2% after 5000 cycles.
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Affiliation(s)
- Siew Xian Chin
- Department of Physics, Faculty of Science, Kasetsart University, Chatuchak, Bangkok 10900, Thailand;
- ASASIpintar Program, Pusat GENIUS@Pintar Negara, Universiti Kebangsaan Malaysia, Bangi 43600, Selangor, Malaysia
| | - Kam Sheng Lau
- Materials Science Program, Faculty of Science and Technology, Universiti Kebangsaan Malaysia, Bangi 43600, Selangor, Malaysia;
| | - Riski Titian Ginting
- Department of Electrical Engineering, Universitas Prima Indonesia, Medan 20118, North Sumatra, Indonesia
- Nanomaterials for Renewable Energy (NRE) Laboratory, Medan 20133, North Sumatra, Indonesia
| | - Sin Tee Tan
- Department of Physics, Faculty of Science, Universiti Putra Malaysia, Serdang 43400, Selangor, Malaysia;
| | - Poi Sim Khiew
- Center of Nanotechnology and Advanced Materials, Faculty of Engineering, University of Nottingham Malaysia Campus, Jalan Broga, Semenyih 43500, Selangor, Malaysia;
| | - Chin Hua Chia
- Materials Science Program, Faculty of Science and Technology, Universiti Kebangsaan Malaysia, Bangi 43600, Selangor, Malaysia;
| | - Chatchawal Wongchoosuk
- Department of Physics, Faculty of Science, Kasetsart University, Chatuchak, Bangkok 10900, Thailand;
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Lau KS, Azmi NAS, Chin SX, Zakaria S, Chia CH. Chitosan-Bead-Encapsulated Polystyrene Sulfonate for Adsorption of Methylene Blue and Regeneration Studies: Batch and Continuous Approaches. Polymers (Basel) 2023; 15:polym15051269. [PMID: 36904513 PMCID: PMC10007044 DOI: 10.3390/polym15051269] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2023] [Revised: 02/24/2023] [Accepted: 02/27/2023] [Indexed: 03/06/2023] Open
Abstract
Textile industrialization causes water pollution due to the discharge of industrial effluents into the environment. To reduce the impact of industrial effluent, it must be treated in wastewater treatment plants before discharge into rivers. Among all wastewater treatment approaches, the adsorption process is one method to remove pollutants from wastewater, but it has some limitations in term of reusability and ionic selective adsorption properties. In this study, we prepared cationic poly (styrene sulfonate) (PSS)-incorporated anionic chitosan beads synthesized using the oil-water emulsion coagulation method. The produced beads were characterized using FESEM and FTIR analysis. In batch adsorption studies, the PSS-incorporated chitosan beads exhibited monolayer adsorption processes, that is, exothermic processes that occur spontaneously at low temperatures, which were analyzed based on the adsorption isotherms, adsorption kinetics, and thermodynamics model fittings. The presence of PSS enables cationic methylene blue dye to adsorb to the anionic chitosan structure via electrostatic interaction between the sulfonic group and the dye molecule. The maximum adsorption capacity of PSS-incorporated chitosan beads achieved 42.21 mg/g, as calculated from the Langmuir adsorption isotherm. Finally, the PSS-incorporated chitosan beads demonstrated good regeneration with different types of reagents, especially using sodium hydroxide as a regeneration reagent. With the use of sodium hydroxide regeneration of this adsorbent material, a continuous adsorption setup also demonstrated that PSS-incorporated chitosan beads can be reused for methylene blue adsorption for up to three cycle processes.
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Affiliation(s)
- Kam Sheng Lau
- Materials Science Program, Department of Applied Physics, Faculty of Science and Technology, Universiti Kebangsaan Malaysia, Bangi 43600, Selangor, Malaysia
| | - Nur Alia Sahira Azmi
- Materials Science Program, Department of Applied Physics, Faculty of Science and Technology, Universiti Kebangsaan Malaysia, Bangi 43600, Selangor, Malaysia
| | - Siew Xian Chin
- ASASIpintar Program, Pusat GENIUS@Pintar Negara, Universiti Kebangsaan Malaysia, Bangi 43600, Selangor, Malaysia
- Correspondence: (S.X.C.); (C.H.C.); Tel.: +603-8921-7552 (S.X.C.); +603-8921-5473 (C.H.C.)
| | - Sarani Zakaria
- Materials Science Program, Department of Applied Physics, Faculty of Science and Technology, Universiti Kebangsaan Malaysia, Bangi 43600, Selangor, Malaysia
| | - Chin Hua Chia
- Materials Science Program, Department of Applied Physics, Faculty of Science and Technology, Universiti Kebangsaan Malaysia, Bangi 43600, Selangor, Malaysia
- Correspondence: (S.X.C.); (C.H.C.); Tel.: +603-8921-7552 (S.X.C.); +603-8921-5473 (C.H.C.)
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Chin SX, Lau KS, Zakaria S, Chia CH, Wongchoosuk C. Chitosan Fibers Loaded with Limonite as a Catalyst for the Decolorization of Methylene Blue via a Persulfate-Based Advanced Oxidation Process. Polymers (Basel) 2022; 14:polym14235165. [PMID: 36501560 PMCID: PMC9736373 DOI: 10.3390/polym14235165] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2022] [Revised: 11/18/2022] [Accepted: 11/24/2022] [Indexed: 11/30/2022] Open
Abstract
Wastewater generated from industries seriously impacts the environment. Conventional biological and physiochemical treatment methods for wastewater containing organic molecules have some limitations. Therefore, identifying other alternative methods or processes that are more suitable to degrade organic molecules and lower chemical oxygen demand (COD) in wastewater is necessary. Heterogeneous Fenton processes and persulfate (PS) oxidation are advanced oxidation processes (AOPs) that degrade organic pollutants via reactive radical species. Therefore, in this study, limonite powder was incorporated into porous regenerated chitosan fibers and further used as a heterogeneous catalyst to decompose methylene blue (MB) via sulfate radical-based AOPs. Limonite was used as a heterogeneous catalyst in this process to generate the persulfate radicals (SO4-·) that initiate the decolorization process. Limonite-chitosan fibers were produced to effectively recover the limonite powder so that the catalyst can be reused repeatedly. The formation of limonite-chitosan fibers viewed under a field emission scanning electron microscope (FESEM) showed that the limonite powder was well distributed in both the surface and cross-section area. The effectiveness of limonite-chitosan fibers as a catalyst under PS activation achieved an MB decolorization of 78% after 14 min. The stability and reusability of chitosan-limonite fibers were evaluated and measured in cycles 1 to 10 under optimal conditions. After 10 cycles of repeated use, the limonite-chitosan fiber maintained its performance up to 86%, revealing that limonite-containing chitosan fibers are a promising reusable catalyst material.
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Affiliation(s)
- Siew Xian Chin
- Department of Physics, Faculty of Science, Kasetsart University, Chatuchak, Bangkok 10900, Thailand
- ASASIpintar Program, Pusat GENIUS@Pintar Negara, Universiti Kebangsaan Malaysia, Bangi 43600, Selangor, Malaysia
| | - Kam Sheng Lau
- Materials Science Program, Department of Applied Physics, Faculty of Science and Technology, Universiti Kebangsaan Malaysia, Bangi 43600, Selangor, Malaysia
- Correspondence: (K.S.L.); (C.H.C.); (C.W.)
| | - Sarani Zakaria
- Materials Science Program, Department of Applied Physics, Faculty of Science and Technology, Universiti Kebangsaan Malaysia, Bangi 43600, Selangor, Malaysia
| | - Chin Hua Chia
- Materials Science Program, Department of Applied Physics, Faculty of Science and Technology, Universiti Kebangsaan Malaysia, Bangi 43600, Selangor, Malaysia
- Correspondence: (K.S.L.); (C.H.C.); (C.W.)
| | - Chatchawal Wongchoosuk
- Department of Physics, Faculty of Science, Kasetsart University, Chatuchak, Bangkok 10900, Thailand
- Correspondence: (K.S.L.); (C.H.C.); (C.W.)
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Vincent J, Lau KS, Evyan YCY, Chin SX, Sillanpää M, Chia CH. Biogenic Synthesis of Copper-Based Nanomaterials Using Plant Extracts and Their Applications: Current and Future Directions. Nanomaterials (Basel) 2022; 12:3312. [PMID: 36234439 PMCID: PMC9565561 DOI: 10.3390/nano12193312] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/06/2022] [Revised: 09/19/2022] [Accepted: 09/19/2022] [Indexed: 06/16/2023]
Abstract
Plants have been used for multiple purposes over thousands of years in various applications such as traditional Chinese medicine and Ayurveda. More recently, the special properties of phytochemicals within plant extracts have spurred researchers to pursue interdisciplinary studies uniting nanotechnology and biotechnology. Plant-mediated green synthesis of nanomaterials utilises the phytochemicals in plant extracts to produce nanomaterials. Previous publications have demonstrated that diverse types of nanomaterials can be produced from extracts of numerous plant components. This review aims to cover in detail the use of plant extracts to produce copper (Cu)-based nanomaterials, along with their robust applications. The working principles of plant-mediated Cu-based nanomaterials in biomedical and environmental applications are also addressed. In addition, it discusses potential biotechnological solutions and new applications and research directions concerning plant-mediated Cu-based nanomaterials that are yet to be discovered so as to realise the full potential of the plant-mediated green synthesis of nanomaterials in industrial-scale production and wider applications. This review provides readers with comprehensive information, guidance, and future research directions concerning: (1) plant extraction, (2) plant-mediated synthesis of Cu-based nanomaterials, (3) the applications of plant-mediated Cu-based nanomaterials in biomedical and environmental remediation, and (4) future research directions in this area.
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Affiliation(s)
- Jei Vincent
- Materials Science Program, Department of Applied Physics, Faculty of Science and Technology, Universiti Kebangsaan Malaysia, Bangi 43600, Selangor, Malaysia
| | - Kam Sheng Lau
- Materials Science Program, Department of Applied Physics, Faculty of Science and Technology, Universiti Kebangsaan Malaysia, Bangi 43600, Selangor, Malaysia
| | - Yang Chia-Yan Evyan
- Faculty of Engineering, Science and Technology, Nilai University, Nilai 71800, Negeri Sembilan, Malaysia
| | - Siew Xian Chin
- ASASIpintar Program, Pusat GENIUS@Pintar Negara, Universiti Kebangsaan Malaysia, Bangi 43600, Selangor, Malaysia
| | - Mika Sillanpää
- Materials Science Program, Department of Applied Physics, Faculty of Science and Technology, Universiti Kebangsaan Malaysia, Bangi 43600, Selangor, Malaysia
- Department of Chemical Engineering, School of Mining, Metallurgy and Chemical Engineering, University of Johannesburg, P.O. Box 17011, Doornfontein 2028, South Africa
- Sustainable Membrane Technology Research Group (SMTRG), Chemical Engineering Department, Persian Gulf University, Bushehr P.O. Box 75169-13817, Iran
- Zhejiang Rongsheng Environmental Protection Paper Co. LTD, NO.588 East Zhennan Road, Pinghu Economic Development Zone, Zhejiang 314213, China
| | - Chin Hua Chia
- Materials Science Program, Department of Applied Physics, Faculty of Science and Technology, Universiti Kebangsaan Malaysia, Bangi 43600, Selangor, Malaysia
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Wong YP, Wagiman N, Tan JWD, Hanim BS, Rashidan MSH, Fong KM, Norhazli NN, Qrisha Y, Shah RNRA, Mustangin M, Zakaria H, Chin SX, Tan GC. Loss of CXC-Chemokine Receptor 1 Expression in Chorioamnionitis Is Associated with Adverse Perinatal Outcomes. Diagnostics (Basel) 2022; 12:diagnostics12040882. [PMID: 35453930 PMCID: PMC9028796 DOI: 10.3390/diagnostics12040882] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2022] [Revised: 03/30/2022] [Accepted: 03/30/2022] [Indexed: 02/04/2023] Open
Abstract
Background: Chorioamnionitis complicates about 1−5% of deliveries at term and causes about one-third of stillbirths. CXC-chemokine receptor 1 (CXCR1) binds IL-8 with high affinity and regulates neutrophil recruitment. We aimed to determine the immunoexpression of CXCR1 in placentas with chorioamnionitis, and its association with adverse perinatal outcomes. Methods: A total of 101 cases of chorioamnionitis and 32 cases of non-chorioamnionitis were recruited over a period of 2 years. CXCR1 immunohistochemistry was performed, and its immunoexpression in placentas was evaluated. The adverse perinatal outcomes included intrauterine death, poor APGAR score, early neonatal death, and respiratory complications. Results: Seventeen cases (17/101, 16.8%) with chorioamnionitis presented as preterm deliveries. Lung complications were more common in mothers who were >35 years (p = 0.003) and with a higher stage in the foetal inflammatory response (p = 0.03). Notably, 24 cases (23.8%) of histological chorioamnionitis were not detected clinically. Interestingly, the loss of CXCR1 immunoexpression in the umbilical cord endothelial cells (UCECs) was significantly associated with foetal death (p = 0.009). Conclusion: The loss of CXCR1 expression in UCECs was significantly associated with an increased risk of adverse perinatal outcomes and could be used as a biomarker to predict adverse perinatal outcomes in chorioamnionitis. Further study is warranted to study the pathophysiology involved in the failure of CXCR1 expression in these cells.
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Affiliation(s)
- Yin Ping Wong
- Department of Pathology, Faculty of Medicine, Universiti Kebangsaan Malaysia, Jalan Yaacob Latif, Bandar Tun Razak, Kuala Lumpur 56000, Malaysia; (Y.P.W.); (N.W.); (B.S.H.); (M.M.); (H.Z.)
| | - Noorhafizah Wagiman
- Department of Pathology, Faculty of Medicine, Universiti Kebangsaan Malaysia, Jalan Yaacob Latif, Bandar Tun Razak, Kuala Lumpur 56000, Malaysia; (Y.P.W.); (N.W.); (B.S.H.); (M.M.); (H.Z.)
- Department of Pathology, Hospital Sultanah Aminah, Johor Bahru 80100, Malaysia;
| | - Jonathan Wei De Tan
- ASASIpintar Programme, Pusat Genius@Pintar Negara, Universiti Kebangsaan Malaysia, Bangi 43600, Malaysia; (J.W.D.T.); (M.S.H.R.); (K.M.F.); (N.N.N.); (Y.Q.); (S.X.C.)
| | - Barizah Syahirah Hanim
- Department of Pathology, Faculty of Medicine, Universiti Kebangsaan Malaysia, Jalan Yaacob Latif, Bandar Tun Razak, Kuala Lumpur 56000, Malaysia; (Y.P.W.); (N.W.); (B.S.H.); (M.M.); (H.Z.)
| | - Muhammad Syamil Hilman Rashidan
- ASASIpintar Programme, Pusat Genius@Pintar Negara, Universiti Kebangsaan Malaysia, Bangi 43600, Malaysia; (J.W.D.T.); (M.S.H.R.); (K.M.F.); (N.N.N.); (Y.Q.); (S.X.C.)
| | - Kai Mun Fong
- ASASIpintar Programme, Pusat Genius@Pintar Negara, Universiti Kebangsaan Malaysia, Bangi 43600, Malaysia; (J.W.D.T.); (M.S.H.R.); (K.M.F.); (N.N.N.); (Y.Q.); (S.X.C.)
| | - Naufal Naqib Norhazli
- ASASIpintar Programme, Pusat Genius@Pintar Negara, Universiti Kebangsaan Malaysia, Bangi 43600, Malaysia; (J.W.D.T.); (M.S.H.R.); (K.M.F.); (N.N.N.); (Y.Q.); (S.X.C.)
| | - Yashini Qrisha
- ASASIpintar Programme, Pusat Genius@Pintar Negara, Universiti Kebangsaan Malaysia, Bangi 43600, Malaysia; (J.W.D.T.); (M.S.H.R.); (K.M.F.); (N.N.N.); (Y.Q.); (S.X.C.)
| | | | - Muaatamarulain Mustangin
- Department of Pathology, Faculty of Medicine, Universiti Kebangsaan Malaysia, Jalan Yaacob Latif, Bandar Tun Razak, Kuala Lumpur 56000, Malaysia; (Y.P.W.); (N.W.); (B.S.H.); (M.M.); (H.Z.)
| | - Haliza Zakaria
- Department of Pathology, Faculty of Medicine, Universiti Kebangsaan Malaysia, Jalan Yaacob Latif, Bandar Tun Razak, Kuala Lumpur 56000, Malaysia; (Y.P.W.); (N.W.); (B.S.H.); (M.M.); (H.Z.)
| | - Siew Xian Chin
- ASASIpintar Programme, Pusat Genius@Pintar Negara, Universiti Kebangsaan Malaysia, Bangi 43600, Malaysia; (J.W.D.T.); (M.S.H.R.); (K.M.F.); (N.N.N.); (Y.Q.); (S.X.C.)
| | - Geok Chin Tan
- Department of Pathology, Faculty of Medicine, Universiti Kebangsaan Malaysia, Jalan Yaacob Latif, Bandar Tun Razak, Kuala Lumpur 56000, Malaysia; (Y.P.W.); (N.W.); (B.S.H.); (M.M.); (H.Z.)
- Correspondence:
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Azmi A, Lau KS, Chin SX, Zakaria S, Chia CH. Regenerated cellulose membrane incorporating photocatalytic zinc oxide as a bifunctional membrane for decoloration of methylene blue. POLYM ADVAN TECHNOL 2021. [DOI: 10.1002/pat.5560] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Azima Azmi
- Materials Science Program, Department of Applied Physics, Faculty of Science and Technology Universiti Kebangsaan Malaysia Bangi Malaysia
| | - Kam Sheng Lau
- Materials Science Program, Department of Applied Physics, Faculty of Science and Technology Universiti Kebangsaan Malaysia Bangi Malaysia
| | - Siew Xian Chin
- ASASIpintar Program, Pusat GENIUS@Pintar Negara Universiti Kebangsaan Malaysia Bangi Malaysia
| | - Sarani Zakaria
- Materials Science Program, Department of Applied Physics, Faculty of Science and Technology Universiti Kebangsaan Malaysia Bangi Malaysia
| | - Chin Hua Chia
- Materials Science Program, Department of Applied Physics, Faculty of Science and Technology Universiti Kebangsaan Malaysia Bangi Malaysia
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Lau KS, Chin SX, Jaafar SNS, Chia CH. Conversion of glucose into levulinic acid in continuous segmented turbulent flow with enhanced chemical reaction. Tetrahedron Lett 2021. [DOI: 10.1016/j.tetlet.2021.153330] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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Daud N, Razak NF, Abd Rahman NN, Mohd Zahidi A, Chin SX, Tengku Muda TEA, Syono MI. Image Reversal Resist Photolithography of Silicon-Based Platinum and Silver Microelectrode Pattern. SAINS MALAYS 2021. [DOI: 10.17576/jsm-2021-5002-22] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Silicon-based platinum (Pt) and silver (Ag) microelectrodes are constructed using photolithography technique and used in detecting arsenic activity in different electrolytes. Pt and Ag have good properties either as a working, a counter, or a reference electrode due to their low electrical resistance, high melting point, and high chemical stability. This chemical sensor has the ability to detect the changes in the level or activity of arsenic in electrolytes. Patterning these metals by wet chemical or dry etching is not a feasible process as these metals cannot be etched properly. The lift-off process can be applied to ease the etching process, but it has a major problem whereby the metal particles or ears may remain at the edges at the end of the process. The process variables, particularly the resist slope, were investigated to reduce possible defects using an image reversal resist. The thickness and angle of the resist side wall were measured by SEM. The effects of many factors that may influence or resist steep angle formation were analyzed and optimized with the Design of Experiment (DOE) technique to achieve the target recipe of resist angle < 60°. The lower angle of the resist side wall resulted in a better percentage yield of good electrode pattern after the lift-off process. The ability of fabricated microelectrode and influence of supporting electrolytes in arsenic determination were discussed.
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Saad MJ, Sajab MS, Wan Busu WN, Misran S, Zakaria S, Chin SX, Chia CH. Comparative Adsorption Mechanism of Rice Straw Activated Carbon Activated with NaOH and KOH. SAINS MALAYS 2020. [DOI: 10.17576/jsm-2020-4911-11] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Hashimi AS, Nohan MANM, Chin SX, Khiew PS, Zakaria S, Chia CH. Copper Nanowires as Highly Efficient and Recyclable Catalyst for Rapid Hydrogen Generation from Hydrolysis of Sodium Borohydride. Nanomaterials (Basel) 2020; 10:nano10061153. [PMID: 32545513 PMCID: PMC7353277 DOI: 10.3390/nano10061153] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/27/2020] [Revised: 06/08/2020] [Accepted: 06/10/2020] [Indexed: 12/12/2022]
Abstract
Hydrogen (H2) is a clean energy carrier which can help to solve environmental issues with the depletion of fossil fuels. Sodium borohydride (NaBH4) is a promising candidate material for solid state hydrogen storage due to its huge hydrogen storage capacity and nontoxicity. However, the hydrolysis of NaBH4 usually requires expensive noble metal catalysts for a high H2 generation rate (HGR). Here, we synthesized high-aspect ratio copper nanowires (CuNWs) using a hydrothermal method and used them as the catalyst for the hydrolysis of NaBH4 to produce H2. The catalytic H2 generation demonstrated that 0.1 ng of CuNWs could achieve the highest volume of H2 gas in 240 min. The as-prepared CuNWs exhibited remarkable catalytic performance: the HGR of this study (2.7 × 1010 mL min−1 g−1) is ~3.27 × 107 times higher than a previous study on a Cu-based catalyst. Furthermore, a low activation energy (Ea) of 42.48 kJ mol−1 was calculated. Next, the retreated CuNWs showed an outstanding and stable performance for five consecutive cycles. Moreover, consistent catalytic activity was observed when the same CuNWs strip was used for four consecutive weeks. Based on the results obtained, we have shown that CuNWs can be a plausible candidate for the replacement of a costly catalyst for H2 generation.
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Affiliation(s)
- Aina Shasha Hashimi
- Materials Science Program, Department of Applied Physics, Faculty of Science and Technology, Universiti Kebangsaan Malaysia, Bangi 43600, Selangor, Malaysia; (A.S.H.); (M.A.N.M.N.); (S.Z.)
| | - Muhammad Amirul Nazhif Mohd Nohan
- Materials Science Program, Department of Applied Physics, Faculty of Science and Technology, Universiti Kebangsaan Malaysia, Bangi 43600, Selangor, Malaysia; (A.S.H.); (M.A.N.M.N.); (S.Z.)
| | - Siew Xian Chin
- ASASIpintar Program, Pusat GENIUS@Pintar Negara, Universiti Kebangsaan Malaysia, Bangi 43600, Selangor, Malaysia;
| | - Poi Sim Khiew
- Center of Nanotechnology and Advanced Materials, Faculty of Engineering, University of Nottingham Malaysia Campus, Jalan Broga, Semenyih 43500, Selangor, Malaysia;
| | - Sarani Zakaria
- Materials Science Program, Department of Applied Physics, Faculty of Science and Technology, Universiti Kebangsaan Malaysia, Bangi 43600, Selangor, Malaysia; (A.S.H.); (M.A.N.M.N.); (S.Z.)
| | - Chin Hua Chia
- Materials Science Program, Department of Applied Physics, Faculty of Science and Technology, Universiti Kebangsaan Malaysia, Bangi 43600, Selangor, Malaysia; (A.S.H.); (M.A.N.M.N.); (S.Z.)
- Correspondence: ; Tel.: +603-8921-5473
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Lau KS, Tan ST, Ginting RT, Khiew PS, Chin SX, Chia CH. A mechanistic study of silver nanostructure incorporating reduced graphene oxide via a flow synthesis approach. NEW J CHEM 2020. [DOI: 10.1039/c9nj04881b] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
An improved capacitive behaviour of reduced graphene oxide with the incorporation of silver nanoparticles and silver nanowires.
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Affiliation(s)
- Kam Sheng Lau
- Materials Science Program, Faculty of Science and Technology
- Universiti Kebangsaan Malaysia
- 43600 Bangi
- Malaysia
| | - Sin Tee Tan
- Department of Physics
- Faculty of Science
- Universiti Putra Malaysia
- 43400 UPM Serdang
- Malaysia
| | - Riski Titian Ginting
- Department of Electrical Engineering
- Universitas Prima Indonesia
- Medan 20118
- Indonesia
| | - Poi Sim Khiew
- Center of Nanotechnology and Advanced Materials
- Faculty of Engineering
- University of Nottingham Malaysia Campus
- Semenyih
- Malaysia
| | - Siew Xian Chin
- Materials Science Program, Faculty of Science and Technology
- Universiti Kebangsaan Malaysia
- 43600 Bangi
- Malaysia
- ASASIpintar Program, Pusat PERMATApintar®
| | - Chin Hua Chia
- Materials Science Program, Faculty of Science and Technology
- Universiti Kebangsaan Malaysia
- 43600 Bangi
- Malaysia
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Hashimi AS, Nohan MANM, Chin SX, Zakaria S, Chia CH. Rapid Catalytic Reduction of 4-Nitrophenol and Clock Reaction of Methylene Blue using Copper Nanowires. Nanomaterials (Basel) 2019; 9:E936. [PMID: 31261696 PMCID: PMC6669591 DOI: 10.3390/nano9070936] [Citation(s) in RCA: 42] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/10/2019] [Revised: 06/21/2019] [Accepted: 06/25/2019] [Indexed: 11/17/2022]
Abstract
Copper nanowires (CuNWs) with a high aspect ratio of ~2600 have been successfully synthesized by using a facile hydrothermal method. The reductions of 4-nitrophenol (4-NP) to 4-aminophenol (4-AP) and methylene blue (MB) to leucomethylene blue (LMB) by using sodium borohydride (NaBH4) were used as models to test the catalytic activity of CuNWs. We showed that by increasing the CuNWs content, the rate of reduction increased as well. The CuNWs showed an excellent catalytic performance where 99% reduction of 4-NP to 4-AP occurred in just 60 s by using only 0.1 pg of CuNWs after treatment with glacial acetic acid (GAA). The rate constant (kapp) and activity factor (K) of this study is 18 and ~1010 fold in comparison to previous study done with no GAA treatment applied, respectively. The CuNWs showed an outstanding catalytic activity for at least ten consecutive reusability tests with a consistent result in 4-NP reduction. In clock reaction of MB, approximately 99% of reduction of MB into LMB was achieved in ~5 s by using 2 μg CuNWs. Moreover, the addition of NaOH can improve the rate and degree of recolorization of LMB to MB.
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Affiliation(s)
- Aina Shasha Hashimi
- Materials Science Program, Faculty of Science and Technology, Universiti Kebangsaan Malaysia, 43600 Bangi, Selangor, Malaysia
| | | | - Siew Xian Chin
- ASASIpintar Program, Pusat GENIUS@Pintar Negara, Universiti Kebangsaan Malaysia, 43600 Bangi, Selangor, Malaysia.
| | - Sarani Zakaria
- Materials Science Program, Faculty of Science and Technology, Universiti Kebangsaan Malaysia, 43600 Bangi, Selangor, Malaysia
| | - Chin Hua Chia
- Materials Science Program, Faculty of Science and Technology, Universiti Kebangsaan Malaysia, 43600 Bangi, Selangor, Malaysia.
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Saad MJ, Chia CH, Zakaria S, Sajab MS, Misran S, Abdul Rahman MH, Chin SX. Physical and Chemical Properties of the Rice Straw Activated Carbon Produced from Carbonization and KOH Activation Processes. SAINS MALAYS 2019. [DOI: 10.17576/jsm-2019-4802-16] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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14
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Nazhif Mohd Nohan MA, Chia CH, Hashimi AS, Chin SX, Khiew PS, Zakaria S, Azmi A, Lau KS, Razali NF. Highly stable binder free CNTs/rGO aerogel electrode for decolouration of methylene blue & palm oil mill effluent via electro-Fenton oxidation process. RSC Adv 2019; 9:16472-16478. [PMID: 35516365 PMCID: PMC9064360 DOI: 10.1039/c9ra02364j] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2019] [Accepted: 05/21/2019] [Indexed: 12/22/2022] Open
Abstract
In this study, single wall carbon nanotubes (CNTs)/reduced graphene oxides (rGO) aerogels were prepared by a one-pot hydrothermal process without using a binder.
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Affiliation(s)
| | - Chin Hua Chia
- Materials Science Program
- Faculty of Science and Technology
- Universiti Kebangsaan Malaysia
- 43600 Bangi
- Malaysia
| | - Aina Shasha Hashimi
- Materials Science Program
- Faculty of Science and Technology
- Universiti Kebangsaan Malaysia
- 43600 Bangi
- Malaysia
| | - Siew Xian Chin
- ASASIpintar Program
- Pusat PERMATApintar
- Universiti Kebangsaan Malaysia
- 43600 Bangi
- Malaysia
| | - Poi Sim Khiew
- Center of Nanotechnology and Advanced Materials
- Faculty of Engineering
- University of Nottingham Malaysia Campus
- Semenyih
- Malaysia
| | - Sarani Zakaria
- Materials Science Program
- Faculty of Science and Technology
- Universiti Kebangsaan Malaysia
- 43600 Bangi
- Malaysia
| | - Azima Azmi
- Materials Science Program
- Faculty of Science and Technology
- Universiti Kebangsaan Malaysia
- 43600 Bangi
- Malaysia
| | - Kam Sheng Lau
- Materials Science Program
- Faculty of Science and Technology
- Universiti Kebangsaan Malaysia
- 43600 Bangi
- Malaysia
| | - Nur Fazlinda Razali
- Materials Science Program
- Faculty of Science and Technology
- Universiti Kebangsaan Malaysia
- 43600 Bangi
- Malaysia
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15
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Chong KY, Chia CH, Zakaria S, Pham TH, Lucas D, Chin SX. Puncture Resistance and Mechanical Properties of Graphene Oxide Reinforced Natural Rubber Latex. SAINS MALAYS 2018. [DOI: 10.17576/jsm-2018-4709-27] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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16
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Lau KS, Chia CH, Chin SX, Chook SW, Zakaria S, Juan JC. Conversion of glucose into lactic acid using silica-supported zinc oxide as solid acid catalyst. PURE APPL CHEM 2018. [DOI: 10.1515/pac-2017-1005] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
Abstract
Zinc oxide (ZnO) has been proven to be highly effective in converting biomass into fine chemicals. It possesses several limitations, such as leaching in hydrothermal reactions and difficulty with regard to its recovery. Supporting ZnO on silica improves its recovery, stability and recyclability. In this study, we produced silica-supported ZnO by incipient wetness impregnation (IWI) method for the conversion of glucose into lactic acid. The presence of the ZnO provided active sites for isomerization to occur. The highest yield of lactic acid was 39.2% at 180 °C for 60 min. Prolonged reaction time and higher reaction temperature promoted further degradation of lactic acid into acetic acid. The yield of lactic acid decreased after the first cycle and decreased slightly for the nine consecutive cycles.
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Affiliation(s)
- Kam Sheng Lau
- Faculty of Science and Technology, Bioresources and Biorefinery Laboratory , Materials Science Program , Universiti Kebangsaan Malaysia , 43600 Bangi, Selangor , Malaysia
| | - Chin Hua Chia
- Faculty of Science and Technology, Bioresources and Biorefinery Laboratory , Materials Science Program , Universiti Kebangsaan Malaysia , 43600 Bangi, Selangor , Malaysia
| | - Siew Xian Chin
- Faculty of Science and Technology, Bioresources and Biorefinery Laboratory , Materials Science Program , Universiti Kebangsaan Malaysia , 43600 Bangi, Selangor , Malaysia
- ASASIpintar Program, Pusat PERMATApintar™ , Universiti Kebangsaan Malaysia , 43600 Bangi , Selangor , Malaysia
| | - Soon Wei Chook
- Faculty of Science and Technology, Bioresources and Biorefinery Laboratory , Materials Science Program , Universiti Kebangsaan Malaysia , 43600 Bangi, Selangor , Malaysia
| | - Sarani Zakaria
- Faculty of Science and Technology, Bioresources and Biorefinery Laboratory , Materials Science Program , Universiti Kebangsaan Malaysia , 43600 Bangi, Selangor , Malaysia
| | - Joon Ching Juan
- Nanotechnology and Catalysis Research Centre (NanoCat), Institute of Postgraduate Studies , University Malaya , 50603 Kuala Lumpur , Malaysia
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Sajab MS, Chia CH, Chan CH, Zakaria S, Kaco H, Chook SW, Chin SX, Noor AM. Bifunctional graphene oxide–cellulose nanofibril aerogel loaded with Fe(iii) for the removal of cationic dye via simultaneous adsorption and Fenton oxidation. RSC Adv 2016. [DOI: 10.1039/c5ra26193g] [Citation(s) in RCA: 64] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A highly porous cellulose nanofibril aerogel loaded with graphene oxide–iron(iii) nanocomposites was produced and used for the treatment of methylene blue in aqueous solution.
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Affiliation(s)
- Mohd Shaiful Sajab
- Bioresources and Biorefinery Laboratory
- School of Applied Physics
- Faculty of Science and Technology
- Universiti Kebangsaan Malaysia
- 43600 Bangi
| | - Chin Hua Chia
- Bioresources and Biorefinery Laboratory
- School of Applied Physics
- Faculty of Science and Technology
- Universiti Kebangsaan Malaysia
- 43600 Bangi
| | - Chi Hoong Chan
- Bioresources and Biorefinery Laboratory
- School of Applied Physics
- Faculty of Science and Technology
- Universiti Kebangsaan Malaysia
- 43600 Bangi
| | - Sarani Zakaria
- Bioresources and Biorefinery Laboratory
- School of Applied Physics
- Faculty of Science and Technology
- Universiti Kebangsaan Malaysia
- 43600 Bangi
| | - Hatika Kaco
- Bioresources and Biorefinery Laboratory
- School of Applied Physics
- Faculty of Science and Technology
- Universiti Kebangsaan Malaysia
- 43600 Bangi
| | - Soon Wei Chook
- Bioresources and Biorefinery Laboratory
- School of Applied Physics
- Faculty of Science and Technology
- Universiti Kebangsaan Malaysia
- 43600 Bangi
| | - Siew Xian Chin
- Bioresources and Biorefinery Laboratory
- School of Applied Physics
- Faculty of Science and Technology
- Universiti Kebangsaan Malaysia
- 43600 Bangi
| | - An’Amt Mohamed Noor
- Fakulti Agro Industri dan Sumber Asli
- Universiti Malaysia Kelantan
- 16100 Kota Bharu
- Malaysia
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18
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Abstract
The effect of acid treatment towards the degree of defibrillation. Rapid uptake of cationic dye. Hemicellulose responsible for dye uptake.
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Affiliation(s)
- Chi Hoong Chan
- School of Applied Physics
- Faculty of Science and Technology
- Universiti Kebangsaan Malaysia
- 43600 Bangi
- Malaysia
| | - Chin Hua Chia
- School of Applied Physics
- Faculty of Science and Technology
- Universiti Kebangsaan Malaysia
- 43600 Bangi
- Malaysia
| | - Sarani Zakaria
- School of Applied Physics
- Faculty of Science and Technology
- Universiti Kebangsaan Malaysia
- 43600 Bangi
- Malaysia
| | - Mohd Shaiful Sajab
- School of Applied Physics
- Faculty of Science and Technology
- Universiti Kebangsaan Malaysia
- 43600 Bangi
- Malaysia
| | - Siew Xian Chin
- School of Applied Physics
- Faculty of Science and Technology
- Universiti Kebangsaan Malaysia
- 43600 Bangi
- Malaysia
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Chook SW, Chia CH, Chan CH, Chin SX, Zakaria S, Sajab MS, Huang NM. A porous aerogel nanocomposite of silver nanoparticles-functionalized cellulose nanofibrils for SERS detection and catalytic degradation of rhodamine B. RSC Adv 2015. [DOI: 10.1039/c5ra18806g] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Herein, cellulose nanofibrils (CNFs) were functionalised with silver nanoparticles (AgNPs) via a green in situ hydrothermal synthesis approach. The produced nanocomposites were used for the detection and catalytic degradation of rhodamine B.
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Affiliation(s)
- Soon Wei Chook
- Bioresources and Biorefinery Laboratory
- School of Applied Physics
- Faculty of Science and Technology
- Universiti Kebangsaan Malaysia
- 43600 Bangi
| | - Chin Hua Chia
- Bioresources and Biorefinery Laboratory
- School of Applied Physics
- Faculty of Science and Technology
- Universiti Kebangsaan Malaysia
- 43600 Bangi
| | - Chi Hoong Chan
- Bioresources and Biorefinery Laboratory
- School of Applied Physics
- Faculty of Science and Technology
- Universiti Kebangsaan Malaysia
- 43600 Bangi
| | - Siew Xian Chin
- Bioresources and Biorefinery Laboratory
- School of Applied Physics
- Faculty of Science and Technology
- Universiti Kebangsaan Malaysia
- 43600 Bangi
| | - Sarani Zakaria
- Bioresources and Biorefinery Laboratory
- School of Applied Physics
- Faculty of Science and Technology
- Universiti Kebangsaan Malaysia
- 43600 Bangi
| | - Mohd Shaiful Sajab
- Bioresources and Biorefinery Laboratory
- School of Applied Physics
- Faculty of Science and Technology
- Universiti Kebangsaan Malaysia
- 43600 Bangi
| | - Nay Ming Huang
- Low Dimensional Materials Research Centre
- Department of Physics
- Faculty of Science
- University Malaya
- Kuala Lumpur
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