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All Journal Jurnal Periodic Jurnal Zona MASALIQ: Jurnal Pendidikan dan Sains Asian Journal of Science, Technology, Engineering, and Art

Hary Sanjaya

Universitas Negeri Padang

Author-ID : 2585982

Religion Arts Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Earth & Planetary Sciences Education Energy Engineering Environmental Science Materials Science & Nanotechnology Social Sciences

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Pengaruh variasi konsentrasi terhadap sifat listrik lapisan tipis CoFe2O4 Hendra Anwar; Jepri Limbong; Hary Sanjaya
Jurnal Zona Vol 6, No 1 (2022)
Publisher : Pelantar Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52364/zona.v6i1.54

A thin layer is a very thin layer of material (organic, inorganic metal or a mixture of organic metals) which has the properties of a conductor, a semiconductor, a superconductor or an insulator. CoFe2O4 nanoparticles are very popular materials to be developed in the field of electricity and magnetism because they have cubic magnetocrystalline properties and high coercivity properties, as well as medium saturation magnetization. Sol-gel is one of the techniques in the manufacture of thin films that involves chemical processes in the form of hydrolysis and condensation reactions. Sol-gel dip coating is a technique for making a thin layer that has several advantages, namely a simple method, easy, few precursors so that it saves production costs and does not damage the environment. XRD test results of a 0.20 M CoFe2O4 thin layer found a peak in the 2Ө 18.1152 region with a diffraction pattern (111). The highest UV-Vis absorbance peak at a wavelength of 285 nm was 2.5423 A and the lowest bandgap value was 2.79 eV. The resistance value is 6.46 and the resistivity value is 0.00016225 m.

Degradation of Methyl Green Dyes with ZnO Catalyst using the Photosonolysis Method Muhammad Gani Ariski; Hary Sanjaya; Alizar Alizar; Deski Beri; Yohandri Yohandri
Jurnal Periodic Jurusan Kimia UNP Vol 11, No 2 (2022): PERIODIC
Publisher : Departemen Kimia FMIPA UNP

Textile and dyestuff industrial dye waste remain the most difficult wastewater to treat due to the complex aromatic molecular structure of industrial dyes, which are very difficult to decompose. This research was conducted on the degradation of methyl green using the photosonolysis method. The purpose of this study was to determine the optimum time and amount of ZnO used in degrading methyl green dye. The results of the percentage degradation were obtained from the absorbance value measured using a UV-Vis Spectrophotometer. (λmax) Methyl green obtained from the measurement of a UV-Vis spectrophotometer was 640 nm. The results showed that the optimum irradiation and sonication time to degrade methyl green was 60 minutes with a degradation percentage of 92.77%. For the effect of mass variation of ZnO catalyst obtained the optimum mass of 0.05 grams with a degradation percentage of 96.38%.

Kelarutan Zat Warna Organik dalam Gelasi Mikroemulsi Water In Oil Sistem Air, Surfaktan Nonionik Tween 60 dan Sikloheksana Aulia Rahmi; Hary Sanjaya; Fitri Amelia; Ananda Putra
Jurnal Periodic Jurusan Kimia UNP Vol 11, No 2 (2022): PERIODIC
Publisher : Departemen Kimia FMIPA UNP

Organic dyes can be dissolved in the gelation of water in oil (w/o) microemulsion of the system of water (pH=4,5 and pH=9,5), nonionic surfactan tween 60 and cyclohexane. The purpose of this study was to prepare microemulsion gels using the sol-gel method, determine the solubility of organic dyes (turmeric and telang flower) in gelation, determine the value of density, refractive index of organic dyes in gelation microemultion (w/o) of the system of water, nonionic surfactan tween 60 and cyclohexane. Gel preparation was carried out using the sol-gel method at a temperature low using TEOS and ethanol which is hidrolyzed with water to form gel. Tetra ethyl ortho silicate which is added 1: 8 mol comparison to the amount of water in microemilsion of water in oil. Determination of value of the refractive index in this study using an ABBE refractometer. The result showed that the solubility of dye organic matter from turmeric and telang flower was 1,376% and 0,498% at pH 4,5 and 1,292% and 0,468% at pH 9,5. The density can be seen by the density test with the result of greatest density density is tumeric 0,87744 g/cm3 at pH 4,5 and 0,86836 g/cm3 at pH 9,5. Then measure the refractive index value, namely turmeric 1,4154 at pH 4,5 and 1,4274 at pH 9,5.

Degradasi Zat Warna Methyl Orange dengan Katalis ZnO-Co Menggunakan Metode Fotosonolisis Laila Suryani; Hary Sanjaya; Yohandri Yohandri
Jurnal Periodic Jurusan Kimia UNP Vol 10, No 2 (2021): PERIODIC
Publisher : Departemen Kimia FMIPA UNP

Degradation of methyl orange was carried out with variations in time of 30, 60, 90, 120, 150, 180, 210, 240 minutes and variations in doped catalyst concentrations of 5%, 10%, 15%, 20%, 25% using the photosonolysis method. The results showed that the maximum degradation time of methyl orange was 210 minutes with a degradation percentage of 76.1216%. The variation in the concentration of catalyst for the degradation of methyl orange obtained a maximum concentration of 5% with a degradation percentage of 20.1045%. The band gap value of 5% ZnO-Co catalyst performed using UV-Vis Diffuse Reflectance Spectroscopy (DRS) was 3.21 eV.

Penentuan Kondisi Optimum Pembentukan Natrium Silikat (Na2SiO3) Menggunakan Material Dasar Silika Alam dan Natrium Hidroksida (NaOH) Illa Ramadhani; Budhi Oktavia; Ananda Putra; Hary Sanjaya
Jurnal Periodic Jurusan Kimia UNP Vol 10, No 2 (2021): PERIODIC
Publisher : Departemen Kimia FMIPA UNP

The purpose of this research are to investigate the effective synthesis of sodium silicate and knowing the optimum conditions of the sodium silicate from its solubility in water. Synthesis of sodium silicate was carried out by first activating silica using 1M HCl. The activated silica is then added with NaOH. Based on XRF analysis, it was found that the sodium silicate synthesis method is more effective at high temperatures. Determination of the optimum conditions was carried out at various concentrations of NaOH (2M, 3M, 4 M, 5M and 6M). Based on the research that has been done, the optimum conditions for sodium silicate were obtained by adding NaOH with a concentration of 4M.

Degradasi Zat Warna Methylene Blue dengan Katalis ZnO-CuO Menggunakan Metode Fotosonolisis Nilam Nilam; Hary Sanjaya; Yohandri Yohandri
Jurnal Periodic Jurusan Kimia UNP Vol 10, No 2 (2021): PERIODIC
Publisher : Departemen Kimia FMIPA UNP

Photosonolysis method has been done to degrade Methylene blue in the solution. This study aims to determine the effect of radiation time and concentration of doping CuO. The absorbance of the samples was measured with a UV-Vis spectrophotometer. The maximum time to degrade Methylene blue using a ZnO catalyst was obtained at 120 minutes with percentage degradation 87,95%. The maximum doping concentration of CuO on the ZnO catalyst for 120 minutes was obtained at ZnO-CuO 20% catalyst with percentage degradation 90,33%. Analysis of catalyst characterization with a UV-DRS spectrophotometer obtained a band gap value of 3.30 eV.

Degradasi Rhodamin B dengan Katalis ZnO-Fe Menggunakan Metode Fotosonolisis Wahyunita Wulandari; Hary Sanjaya; Yohandri Yohandri
Jurnal Periodic Jurusan Kimia UNP Vol 10, No 2 (2021): PERIODIC
Publisher : Departemen Kimia FMIPA UNP

Degradation of rhodamin B with ZnO-Fe impetus utilizing photosonolysis strategy has been finished with some variety. The objectives of this examination is to know impact of variety radiation times, groupings of doping Fe, and portrayal some spectrophotometer. The absorbance of tests when debasement was recognized by an UV-Visible spectrophotometer. The yield showed greatest season of irradation to degradate rhodamin B at 150 minutes, with the most rate debasement at any point is 91,19%. The occasions will used to figure out which the best fixation doping to degradate rhodamin B. For the variety of impetus fixation was acquired at ZnO-Fe 20% with a debasement level of 23,10%. Examination ZnO doping Fe utilizing UV-DRS(Diffuse Reflectance Spectroscopy) got the greatest band hole esteem is 3,24 eV.

Degradasi Zat Warna Metil Violet Menggunakan Metoda Sonolisis Dengan Katalis ZnO-Ag Abdul Rafi Jelani; Hary Sanjaya
Jurnal Periodic Jurusan Kimia UNP Vol 11, No 3 (2022): PERIODIC
Publisher : Departemen Kimia FMIPA UNP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/p.v11i3.116210

Methyl violet is a dye that is often used in the textile industry. Methyl violet contains aniline which is toxic, mutagenic, and carcinogenic. These compounds cause cancer and gene mutations in living tissue. In addition, methyl violet is also difficult to degrade in waste so it requires serious handling. This study aims to determine the optimum time and optimum mass of ZnO-Ag catalyst against Methyl violet degradation by the sonolysis method. The absorbance value was obtained using a UV-Vis spectrophotometer. The results stated that the Methyl violet solution had a maximum wavelength of 582 nm. The maximum time to degrade Methyl violet with ZnO catalyst was obtained at 90 minutes with %D 85.917% and the maximum mass of catalyst to degrade methyl violet with 10% ZnO-Ag catalyst was obtained at 87.97% mass.

Dedradasi Metilen Biru Secara Fotolisis Dengan Katalis Cdots Doping Au Septian Budiman; Hary Sanjaya; Isnaeni Isnaeni; Umar Kalmar Nizar; Edi Nasra
Jurnal Periodic Jurusan Kimia UNP Vol 11, No 3 (2022): PERIODIC
Publisher : Departemen Kimia FMIPA UNP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/p.v11i3.115918

The degradation of methylene blue was carried out by photolysis method with the help of a Cdots/Au catalyst. This study aims to determine the optimum concentration of dopen Au for Cdots and the optimum time for degradation of methylene blue with the help of a Cdots/Au catalyst. The photolysis method was carried out in a reactor equipped with 3 15 watt lamps with a UV wavelength of 254 nm. The absorption of methylene blue was measured using a spectrophotometer UV-Vis. The optimum Au dopen results were obtained at a concentration of 25 ppm with a degradation percentage of 39.94% and the optimum time for photolysis degradation was 6 hours of irradiation with a degradation percentage of 70.28%.

Degradasi Zat Warna Malachite Green Menggunakan Metode Sonolisis dengan Bantuan Katalis ZnO Yollanda Bunga Osya; Hary Sanjaya
Jurnal Periodic Jurusan Kimia UNP Vol 12, No 1 (2023): PERIODIC
Publisher : Departemen Kimia FMIPA UNP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/p.v12i1.116832

Malachite green is a dye that is widely used in the textile industry. Malachite green has toxic properties that can cause cancer, skin and eye irritation, and respiratory toxicity. Malachite green is difficult to degrade in waste so it requires serious handling. This study aims to determine the optimum time and optimum mass of ZnO catalyst for malachite green degradation by sonolysis method. The absorbance value was obtained using a UV-Vis spectrophotometer. The results of this study stated that the malachite green solution had a maximum wavelength of 617.2 nm. The optimum time to degrade malachite green with ZnO catalyst was obtained at 30 minutes with %D 85.04% and the optimum mass of catalyst to degrade malachite green with ZnO catalyst was obtained at 0.1 gram with %D 83.31%.

Co-Authors Abdul Rafi Jelani Ananda Putra Aulia Rahmi Budhi Oktavia Deski Beri Desy Kurniawati Edi Nasra Fauzan Aulia Akbar Fitri Amelia Hainunnisa Syafitriza Hardeli Hardeli Hendra Anwar Illa Ramadhani Indah Humaira Saragih Isnaeni Isnaeni Jepri Limbong Laila Suryani Lilis Karlina Marlina Yulfitrianti Muhammad Gani Ariski Nilam Nilam Santika Putri Septian Budiman Septian Budiman Suci Ramadhani Suharti Nengsi Ulianas, Alizar Umar Kalmar Nizar Vira Ananda Sukma Wahyunita Wulandari Wenti Aulia Yohandri Yollanda Bunga Osya

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