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All Journal EKSAKTA: Journal of Sciences and Data Analysis Reaktor JURNAL PIJAR Transformasi: Jurnal Pengabdian Masyarakat Acta Chimica Asiana Jurnal Warta Desa (JWD) Jurnal Pijar MIPA Jurnal Akademika Kimia Jurnal Pepadu Jurnal Pendidikan dan Pengabdian Masyarakat Jurnal Pengabdian Inovasi Masyarakat Indonesia Jurnal Akademika Kimia
Iwan Sumarlan
Program Studi Kimia FMIPA Universitas Mataram
Religion Agriculture, Biological Sciences & Forestry Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Control & Systems Engineering Earth & Planetary Sciences Economics, Econometrics & Finance Education Energy Environmental Science Materials Science & Nanotechnology Mathematics Physics Social Sciences Other

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Journal : Acta Chimica Asiana

 1 
Indonesian Modified Clay for Dye Waste Treatment Iwan Sumarlan; Is Fatimah; Karna Wijaya
Acta Chimica Asiana Vol. 3 No. 1 (2020)
Publisher : Chemistry Education Program, the University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (446.156 KB) | DOI: 10.29303/aca.v3i1.11

Abstract

Synthesis and Characterization of TiO2 Coated on Clay Pillared Alumina (PILC) for Methyl Orange Photodegradation Under UV Illumination. The synthesis included both pillarization the clay with alumina and TiO2 coated on PILC using impregnation method. Some characterizations also were employed to this research such as X-Ray Diffraction (XRD), Scanning Electron Microscopy (SEM), N2 Adsorption Isotherm and UV-Visible Diffuse Reflectance (DR UV). The photocatalyst was then used to decompose waste dye, methyl orange (MO). Among three photocatalysts that were successfully synthesized, PILC Ti 1.0% had the highest activity to decompose the waste dye.
Synthesis of Rice Husk Mesoporous Silica as pH Responsive Release Material Pidia Aulia; Saprini Hamdiani; Iwan Sumarlan
Acta Chimica Asiana Vol. 2 No. 2 (2019)
Publisher : Chemistry Education Program, the University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (392.026 KB) | DOI: 10.29303/aca.v2i2.21

Abstract

The synthesis of mesoporous silica as a delivery agent for the ethyl para-methoxycinnamate has been carried out. The study aims to determine the process of mesoporous silica synthesis from sodium silicate from the smelting of rice husk ash, determine the adsorption capacity of mesoporous silica in the ethyl para-methoxycinnamate and the pH responsive release of ethyl para-methoxycinnamate with mesoporous silica as a delivery agent in simulated intestinal and gastric fluids. It was found that mesoporous silica can be synthesized from rice husk ash with a 30% tartaric acid template. Characterization of mesoporous silica using FTIR spectroscopy showed the presence of silanol (Si-OH) and siloxane (Si-O-Si) functional groups. Mesoporous silica from rice husk ash is able as adsorbent for the ethyl para-methoxycinnamate with the adsorption capacity of 8.26 mg/g. The release test of gastric simulation fluid (pH 1.2) showed that the ethyl-para-methoxycinnamate was released from silica for a period of 12 hours. In the intestinal simulation fluid (pH 7.4), the release of the ethyl para-methoxycinnamate occurred slowly at the first hour, then gradually increased at 5 hour up to 12 hour.
Benzimidazole corrosion inhibition performance: A DFT Study Farid Wajdi; Saprizal Hadisaputra; Iwan Sumarlan
Acta Chimica Asiana Vol. 1 No. 2 (2018)
Publisher : Chemistry Education Program, the University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/aca.v1i2.27

Abstract

The corrosion inhibition performance of benzimidazole and its derivatives have been studied by density functional theory DFT in aqueous medium. For this investigation, the corrosion inhibition efficiencies of the protonated and non-protonated spesies of benzimidazole and its derivatives were investigated. The ionization potential of the inhibitors has a strong influence on the efficiency of corrosion inhibitors. The linear correlation was shown between electronic properties and corrosion inhibition efficiency. Electron donating substituents increase the corrosion inhibition efficiency, whereas electron withdrawing substituents give the opposite effect. The NH2 substituent contributes highest, whereas NO2 provides the weakest contribution to the corrosion inhibition efficiency for both non-protonated and protonated species of inhibitors.
Co-Authors Alaa, Siti Anshori, Mufid Arisanti, Ivon Azzauri, Supyan Dhony Hermanto Dian Wijaya Kurniawidi Dina Asnawati Emmy Yuanita Fahrurazi Fahrurazi Farid Wajdi Ganesh Darmayanti Hidayatullah, M. Riski I MADE SUDARMA Indriyatno Iriando, Mahadi Muhammad Gunadharma Is Fatimah Karna Wijaya Karna Wijaya Lala Ghina Aulia Lely Kurniawati Made Ganesh Darmayanti Maria Ulfa Murniati . Nurul Ismillayli Pidia Aulia Rona B. Mentari Saprini Hamdiani Saprizal Hadisaputra Sari, Ayu Purnama Siti Raudhatul Kamali Sri Seno Handayani Sudirman Sudirman Sudirman Sudirman Suhufa Alfarisa Susi Rahayu Tri Dharmayani, Ni Komang Tuty Alawiyah