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Journal IOP Conference Series: Materials Science and Engineering

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IOP Conference Series: Materials Science and Engineering, Volume 808; doi:10.1088/1757-899x/808/1/011002

Abstract:
All papers published in this volume of IOP Conference Series: Materials Science and Engineering have been peer reviewed through processes administered by the proceedings Editors. Reviews were conducted by expert referees to the professional and scientific standards expected of a proceedings journal published by IOP Publishing.
IOP Conference Series: Materials Science and Engineering, Volume 808; doi:10.1088/1757-899x/808/1/011001

Abstract:
The 8th Conference of Emerging Energy and Process technology (CONCEPT 2019) is an annual event organized by Institute of Future Energy of Universiti Teknologi Malaysia. The conference was successfully held in Kuala Lumpur, Malaysia in November 27-28, 2019. CONCEPT 2019 is an Energy and Chemical Process-based conference focus on three themes; Sustainable Energy, Process System, and Safety. The overarching objectives of this conference to stimulate a broader discussion of current technological innovation and invention and identify potential collaborative research among industry experts, academicians, or students. The conference also provides great opportunities for participants to meet experts, exchange ideas, share experiences and establish the ground for future research and business relations with local and global partners. CONCEPT 2019 Proceedings contains 42 selected papers that have been accepted for presentation in the conference. All articles had been reviewed by the researchers and experts in the field appointed by the conference technical committee. The guest editor would like to sincerely thank the publication team for their efforts in preparing this proceeding. Finally, the publication committee wishes to thank all the authors for their contributions to CONCEPT 2019 proceedings and we look forward to welcoming more of your contributions to the CONCEPT 2020. List of Conference Photographs are available in this pdf.
I Hussain, A A Jalil, N A A Fatah, M. Ibrahim, M S Azami, W Fadlun, M A H Aziz, Hu Hambali
IOP Conference Series: Materials Science and Engineering, Volume 808; doi:10.1088/1757-899x/808/1/012037

Abstract:
Catalytic CO2 methanation offers an attractive and sustainable way for the production of substituted natural gas (SNG), which may be used as a clean alternative energy source than fossil fuels. A metal-free fibrous silica ZSM-5 catalyst ([email protected]) was synthesized via the microemulsion technique to conduct catalytic CO2 methanation. The FESEM, BET, and FTIR characterization techniques were used to investigate the surface morphology, pore structure of the catalysts. It was noticed that the commercialized ZSM-5 showed 37% CH4 selectivity with a rate of methane formation 0.067 mmol m−2s−1. While [email protected] exhibited high CH4 selectivity of 66 % with rate of methane formation 0.108 mmol m−2s−1 using same conditions (T = 500 °C and GHSV = 36,000 mL h−1 g−1). Therefore, the [email protected] was proved an efficient and active catalyst for CO2 methanation activity.
A Masudi, N. W. C Jusoh, P Y Liew
IOP Conference Series: Materials Science and Engineering, Volume 808; doi:10.1088/1757-899x/808/1/012023

A A Fauzi, A A Jalil, M Mohamed, N A Naseri, C N C Hitam, N F Khusnun, N S Hassan, A F A Rahman, F F A Aziz, M S M Azmi
IOP Conference Series: Materials Science and Engineering, Volume 808; doi:10.1088/1757-899x/808/1/012016

Abstract:
Fibrous silica titania (FST) was synthesized via hydrothermal method and evaluated on photodegradation of methylene blue (MB). The catalyst was characterized using field emission scanning electron microscopy (FESEM), Fourier transform infrared (FTIR) spectroscopy, ultraviolet-visible diffuse reflectance spectroscopy (UV-Vis DRS) and N2 adsorption–desorption. The photocatalytic activity was performed under different reaction condition namely pH, catalyst dosage and MB initial concentration. FST demonstrated higher performance (99.9%) for 10 mg L−1 of MB initial concentration than titania (TiO2) using 0.25 g L−1 of catalyst dosage at pH 5 for 2 h. The superior performance towards photodegradation of MB under visible light demonstrated by synthesized FST was due to unique morphology of fibrous, high surface area, narrow band gap and more active site (Si-O-Ti). Kinetics study indicated that the photodegradation of MB was well fitted with pseudo-first order Langmuir-Hinshelwood model and adsorption was the rate-limiting step. The FST maintained its photocatalytic activities for up to five cycles reaction with slightly catalyst deactivation, suggesting that the FST is suitable to be implied in the photocatalytic reaction.
S S Sha’Rani, N. W. C. Jusoh, E Abouzari-Lotf, A Ahmad, R R Ali
IOP Conference Series: Materials Science and Engineering, Volume 808; doi:10.1088/1757-899x/808/1/012026

Abstract:
The performance and cost of the membranes have always been crucial for the utilization of electrochemical energy devices. This article presents the properties and the performance of two commercially available and low-cost perfluorinated sulfonic acid membranes of GN115 and GN212C for vanadium redox flow battery (VRFB) application in comparison with Nafion117 (N117) membrane. The vanadium (IV) permeability of GN115 membrane was found to be close to N117, unlike GN212C membrane which showed 4 times higher vanadium (IV) permeability than N117 under similar conditions. Both GN115 and GN212C membranes showed isotropic conductivity and higher values than N117. The battery test results indicated that the high coulombic efficiency (CE) and high voltage efficiency (VE) followed the vanadium (IV) permeability and proton conductivity trends. Both membranes revealed outstanding stability in long-term charge-discharge testing under various current densities. The energy efficiency was found to be higher than N117 with values of 76.6% and 76.8% for GN115 and GN212C, respectively. The overall results suggest that both lower-cost membranes have a strong potential for VRFB application as the single-cell performance results were close to N117. The high value of proton conductivity of GN212C membrane compensates its vanadium (IV) permeability leaving reasonable battery performance.
A A Abdulrasheed, A A Jalil, T J Siang, H U Hambali
IOP Conference Series: Materials Science and Engineering, Volume 808; doi:10.1088/1757-899x/808/1/012001

M N S Rahim, A A Jalil, C N C Hitam
IOP Conference Series: Materials Science and Engineering, Volume 808; doi:10.1088/1757-899x/808/1/012019

Abstract:
The photooxidative desulphurization (PODS) of dibenzothiophene (DBT) was examined under visible light using fibrous silica tantalum (FSTa), tantalum oxide doped fibrous silica (Ta/KCC-1) and commercial tantalum oxide (Ta2O5). FSTa was synthetized using hydrothermal method, while Ta/KCC-1 was obtained via a wet impregnation method. The catalysts were examined by field emission scanning electron microscopy (FESEM), X-ray Diffraction (XRD) and UV-Vis diffuse reflectance spectroscopy (UV-Vis DRS). It was shown that the FSTa possesses the highest photocatalytic performance (70.2%), due to its fibrous structure, well-dispersion of Ta, as well as its narrower band gap. These traits impact on the photocatalysis by promoting the deposition of the DBT on the catalyst, allowing the efficient transfer of charge carrier and preventing the electron-hole recombination.
Peter Abiodun Jeremiah, Sciprofile linkAishah Abdul Jalil, Moses Aderemi Olutoye
IOP Conference Series: Materials Science and Engineering, Volume 808; doi:10.1088/1757-899x/808/1/012013

Abstract:
Start your abstract here... Uses of heterogeneous catalyst in bio-energy production also refer to as green energy has been in existence and well researched. Majority of recent heterogeneous catalysts produced focus on optimizing yield of biodiesel from a single feedstock without concerted efforts been made to consider the cost of production. They are mostly developed and produced from synthetic chemicals with their attendants high cost of production. The present review summarizes the needs to produce heterogeneous solid catalyst from wastes and natural resources like clay which is available in all parts of the world.
Sciprofile linkN A Zubair, M M Nasef, T M Ting, E C Abdullah, A Ahmad
IOP Conference Series: Materials Science and Engineering, Volume 808; doi:10.1088/1757-899x/808/1/012028

Abstract:
Modification of polyethylene coated polypropylene by radiation-induced graft copolymerization (RIGP) of N-vinylformamide film followed by hydrolysis was studied to produce polyvinylamine (PVAm) containing adsorbent for CO2 adsorption. A number of grafting parameters such as irradiation dose, monomer concentration, and reaction temperature were investigated to obtain desired degree of grafting (DOG) prior to hydrolysis. The DOG was found to be a function of reaction parameters and achieved a desired value of 131% at 40 wt% NVF concentration in toluene, 300 kGy dose, 70°C temperature and 1h reaction time. Subsequently the hydrolysis of formamide groups in the grafted films into amine functionalities was carried out in basic medium. Fourier-transform infrared spectroscopy (FTIR) and scanning electron microscopy (SEM) confirmed the NVF monomer was successfully grafted on PE/PP and consequently the hydrolysis of amide into amine functionalities has occurred in the grafted substrates. The CO2 adsorption capacity of PVAm modified adsorbent was brought to be a function of DOG, which is corresponding to the amine content after hydrolysis. The adsorbent showed the highest CO2 adsorption capacity of 1.32 mmol/g when tested with gas composition of 40% CO2 and 60% nitrogen at room temperature.
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