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All Journal Jurnal Periodic Jurusan Kimia UNP Sainstek Jurnal Riset Kimia Fakultas Pertanian JURNAL PENDIDIKAN TAMBUSAI Sainstek : Jurnal Sains dan Teknologi MASALIQ: Jurnal Pendidikan dan Sains Molekul: Jurnal Ilmiah Kimia Asian Journal of Science, Technology, Engineering, and Art
Hary Sanjaya
Jurusan Kimia, Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Negeri Padang, Jl. Prof. Dr.Hamka, Padang
Religion Agriculture, Biological Sciences & Forestry Arts Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Education Energy Engineering Materials Science & Nanotechnology Social Sciences Other

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Perbandingan Pengaruh Lampu UV dan Sinar Matahari Pada Degradasi Zat Warna Congo Red Menggunakan Metode Fotolisis Dengan Bantuan Katalis TiO2 Julizen, Rofilian; Sanjaya, Hary
Periodic Vol 12, No 3 (2023): PERIODIC
Publisher : Departemen Kimia FMIPA UNP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/periodic.v12i3.118506

Abstract

Research conducted by photolysis method to degrade Congo Red dye produced from textile industry waste that has a negative impact on the environment using a TiO2 catalyst aims to determine the optimal degradation percentage on the effect of radiation time and the effect of UV lamp power on the degradation of Congo Red. UV-VIS spectrophotometer measurement results obtained a wavelength of 497nm. The results showed that the percentage of degradation of the optimum radiation time was 92% at 180 minutes, and under the influence of UV lamp power the highest percentage of degradation was 95.21% at 20 watt UV lamp. This study showed that the hydroxyl radical (∙OH) was the main control in degrading Congo Red.
Optimasi Adsorpsi Ion Tembaga (II) Menggunakan Silika Gel-GPTMS Termodifikasi Sulfonat Setiowati, Fiqih Sekar; Oktavia, Budhi; Sanjaya, Hary; Putra, Ananda
Periodic Vol 13, No 1 (2024): PERIODIC
Publisher : Departemen Kimia FMIPA UNP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/periodic.v13i1.124286

Abstract

Adsorption is a process of sorption onto a specific substance that occurs at the surface of a solid material due to intermolecular forces or the penetration of a substance into the solid material surface. Adsorption involves an adsorbent as the sorbent material and an adsorbate as the component being sorbed. Silica gel is a commonly employed adsorbent for the sorption of Cu2+ ions. It is utilized as an adsorbent due to the presence of silanol and siloxane groups, which serve as active sites that can be modified. The modification aims to enhance the adsorption capacity of silica gel for Cu2+ metal ions. In aquatic environments, Cu metal ions are highly toxic to living organisms, posing significant hazards. The modifying compound employed in this study is monosodium salt of 4 – amino – 5 – hydorxy – 2,7 – naphthalenedisulfonic acid. However, prior to the sulfonate compound modification, a linking compound, γ-glycidoxypropyltrimethoxysilane (GPTMS), is required. The purpose of this study was to determine the effect of variations in pH and contact time on the adsorption of Cu2+ metal ions on sulfonate modified silica gel – GPTMS. The modified silica gel was characterized using Fourier-transform infrared (FTIR). The adsorption of Cu2+ ions was characterized by specific surface area (SSA), and the optimal adsorption conditions were determined as pH 4 and  contact time of 60 minutes.
Biosorpsi Ion Logam Cd(II) Menggunakan Ekstrak Selulosa Kulit Durian (Durio zibethinus Murr) Fitria, Fadhila; Nasra, Edi; Sanjaya, Hary; Riga, Riga
Periodic Vol 13, No 1 (2024): PERIODIC
Publisher : Departemen Kimia FMIPA UNP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/periodic.v13i1.124433

Abstract

Heavy metals are produced from various industries whose existence is very dangerous for the environment and human life. Cadmium is an example of a heavy metal that is dangerous and meeds to be addresses. Biosorption is one method that can be used to absorb heavy metal. The purpose of this study was to determine the optimum conditions of ansorption and ansorption capacity of durian shell cellulose the absorption of Cd metal. In this study using a batch method and the test is measured using the Atomic Absorption Spectrophotometer (AAS) instrument and characterized by FTIR. In this study the parameters tested were variations in pH (2, 3, 4, 5, 6) and concentration (50, 100, 150, 200, 250) ppm. The optimum conditions obtained in each variation were pH 4, concentration 200 ppm and contact time with a maximum adsorption capacity of 4,1 mg/g. The modeling of the isotherm that is close to equilibrium is the Langmuir isotherm with R2= 0,9499.
Degradasi Zat Warna Malachite Green Menggunakan Katalis TiO2 dengan Metode Fotolisis Miftahurrahmi, Miftahurrahmi; Sanjaya, Hary; Oktavia, Budhi; Nizar, Umar Kalmar
Periodic Vol 12, No 3 (2023): PERIODIC
Publisher : Departemen Kimia FMIPA UNP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/periodic.v12i3.118388

Abstract

The research that has been done on the photolysis of the degradation of Malachite Green using TiO2 catalyst aims to determine the effect of the percentage degradation of the Malachite Green solution. The results of UV-Vis spectrophotometer measurements obtained a wavelength of 617nm. The results showed that the highest percentage of degradation was 99.05% at 210 minutes using TiO2 catalyst, while 65.45% with TiO2 catalyst mass of 0.25 grams. This study shows that the hydroxyl radical (∙OH) is the main control in degrading Malachite Green.
Pengaruh Variasi Ukuran Ketebalan Material Terhadap Karakteristik Termoelektrik Sistem C/CuO Sari, Putri Manda; Putra, Ananda; Zainul, Rahadian; Sanjaya, Hary
Periodic Vol 13, No 3 (2024): PERIODIC
Publisher : Departemen Kimia FMIPA UNP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/periodic.v13i3.125603

Abstract

One of the factors that can affect the quality and characteristics of thermoelectric materials is the size of the material.. This study aims to determine how the effect of material size is varied in width and thickness. The material used is activated carbon obtained from previous research that has met the SNI No. 06-3720-1995 content test. The activated carbon is then composited with Copper (II) Oxide. Based on the tests that have been carried out, the best material obtained is the material with a thickness size variation of 0.5 cm. With a high electrical conductivity value of 0.9507 MΩ-.cm-, low thermal conductivity of 0.1805 J/s and has a high Seebeck coefficient of 0.020 mV/K. Thermoelectricity offers sustainable energy to maintain energy needs, namely by converting wasted heat energy into electrical energy that can overcome the current global warming problem.
Pengaruh Temperatur Kalsinasi pada Sintesis Copper Tin Oxide (CuSnO3) Menggunakan Metode Sol-Gel Fauzi, Muhammad; Sanjaya, Hary; Mawardi, Mawardi; Aini, Syamsi
Periodic Vol 13, No 3 (2024): PERIODIC
Publisher : Departemen Kimia FMIPA UNP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/periodic.v13i3.125585

Abstract

Synthesis of Copper Tin Oxide (CuSnO3) was carried out using the sol-gel method with varying calcination temperatures (400; 500; 600) oC. The aim of this research is to find out how the calcination temperature affects the synthesis results of the CuSnO3 semiconductor. Then characterization was carried out using the UV-Drs instrument to obtain band gap values and SEM to determine the morphological structure. The CuSnO3 solution was made by dissolving SnCl2.2H2O and CuCl2.2H2O with a molar ratio of 1:1 in 50 mL of methanol solvent and homogenizing then adding 1 mL of the additive Diethylamine (DEA). The gel can be calcined at various temperatures to produce CuSnO3 powder. The research results explain that increasing temperature during calcination can reduce the band gap value of the synthesized CuSnO3 semiconductor material. The surface morphology of CuSnO3 powder at 1000x magnification shows clearly that the surface has cavities (hollows) with a chunk diameter of 7-11 nm.
Pengaruh Ukuran Partikel dan Laju Alir Terhadap Biosorpsi Ion Cu(II) Menggunakan Biosorben Kulit Langsat (Lansium domesticum) Hardianti, Amirah Salsabila; Kurniawati, Desy; Etika, Sri Benti; Sanjaya, Hary
Periodic Vol 13, No 3 (2024): PERIODIC
Publisher : Departemen Kimia FMIPA UNP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/periodic.v13i3.125611

Abstract

Cu2+ ion is a dangerous metal ion produced from various industrial wastes that need to be addressed. Excess and high concentrasions of absorbed Cu2+ ions can disrupt health and ecosystems because they are difficult to degrade and easily accumulate in the body. This study aims to determine the optimum conditions for the absorption of Cu2+ ions using langsat fruit peel on the effect of particle size and flow rate by column method. Adsorption of Cu metal ions with langsat fruit peel biosorbent obtained optimum conditions at adsorbent particle size of 150 micrometers with adsorption capacity of 13,963 mg/g and flow rate of 1 mL/minute with adsorption capacity of 13,442 mg/g. This shows that langsat fruit peel is one of the best biosorbents in absorbing metals with large absorption capacity data.
Metode Sintesis Nanopartikel-TiO2 : A Review Karlina, Lilis; Sanjaya, Hary; Budiman, Septian
MASALIQ Vol 3 No 6 (2023): NOVEMBER
Publisher : Lembaga Yasin AlSys

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58578/masaliq.v3i6.1756

Abstract

Titanium dioxide is an important type of material that has been widely researched by experts. TiO2 can be used as a catalyst and in various other applications because it has unique electronic and optical properties. TiO2 compounds have been synthesized using various synthesis methods. The aim of this review is to summarize various types of TiO2 synthesis methods, morphology and crystallization of nanostructured TiO2. The research method used is literature study or literature study. The results of the reviews show that TiO2 can be synthesized by various methods, namely hydrothermal, solvothermal, sol-gel, direct oxidation, chemical vapor deposition, electrodeposition, sonochemistry and microwaves. The crystal structure phase that is often found is the anatase phase.
Pengaruh DEA dan Waktu Dipping terhadap Nilai Band Gap Lapisan Tipis CuSnO3 Rizka, Futtyhat; Sanjaya, Hary
MASALIQ Vol 3 No 6 (2023): NOVEMBER
Publisher : Lembaga Yasin AlSys

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58578/masaliq.v3i6.2083

Abstract

CuSnO3 is one of the semiconductor materials that can be used in the manufacture of thin film. CuSnO3 is an amorphous semiconductor with a band gap of 2.0-2.5 eV. Dip-coating is one method that can be used to synthesize a thin film of CuSnO3. This study aims to see the effect of DEA additives and dipping time on the band gap value of a thin film of CuSnO3. The results of a thin film of CuSnO3 using the dip-coating method with DEA variations of 1 ml, 1.5 ml, and 2 ml as additives, obtained band gap values of 2.55 eV, 2.41 eV, and 2.31 eV. The larger the volume of DEA, the smaller the band gap value produced. At dipping times of 10 minutes, 15 minutes, and 20 minutes, band gap values of 2.58 eV, 2.31 eV, and 2.26 eV were recorded. The longer the time it takes to dye, the smaller the band gap value produced.
Pengaruh Aditif MEA terhadap Sifat Listrik Lapisan Tipis Sefriyani, Sefriyani; Sanjaya, Hary; Budiman, Septian
MASALIQ Vol 4 No 1 (2024): JANUARI
Publisher : Lembaga Yasin AlSys

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58578/masaliq.v4i1.2134

Abstract

This research discusses the effect of adding MEA additives on the synthesis of CuSnO3 thin films using the dipcoating method. This type of research uses experimental.. Based on UV-DRS analysis, the optimum bandgap data was obtained at 1.8034 eV. The addition of additives greatly influenced the reduction of the bandgap. With FPP, a good resistance of 38.59 Ω was obtained at 6x immersion, with a resistivity of 0.000330 Ωm with a conductivity value of 3030.30 Ω-1m-1. From the resulting data it can be concluded that the thicker the layer, the lower the resistance value, and the lower the resistivity, the better the electrical conductivity.
Co-Authors Abdul Razak Admin Alif Agdisti, Nurul Fadilah Agnes Quartina Pudjiastuti Aini, Syamsi Alfarisi, Fadil Amelia, Reza Amsyar, Nadhilah Auzakiyah, Sabella Budhi Oktavia Deski Beri Desy Kurniawati Dwiputri, Yumanda Edi Nasra Eri Barlian Faizah, Suci Hanim Fatma, Sakina Cahaya Filiandini, Nadya Fitria, Fadhila Harahap, Riri Indah Nitami Hardeli Hardeli Hardianti, Amirah Salsabila Hermansyah Aziz Indang Dewata Izanel, Rezi Ananta Jayawarsa, A.A. Ketut Julianti, Sri Rara Julizen, Rofilian Karsa, Dion Randi Khaliq, Feni Kurnia Laksono Trisnantoro Lilis karlina, Lilis Luli, Rahmaneta Miftahul Jannah Miftahurrahmi, Miftahurrahmi Mifthahul Jannah, Nurul Mulia, Melindra Nengsi, Suharti Nizar, Umar Kalmar Novel, Dheo Shalsabilla Novita, Indri Panca Nurul Husna Nurwijayanti Patriela, Miftah Putra, Ananda Putri Permatasari, Putri Putri Rahayu, Nanda Putri, Natasya Alya Putri, Sinta Eka Putri, Tiara Jelita Rahadian Zainul Rahmatika, Aljumaatul Reflia, Tiwi Retno Damayanti Riga, Riga Rindiani, Maiyola Rizka, Futtyhat Rizki, Olga Tiara Rofiatin, Umi Sari, Putri Manda Sefriyani, Sefriyani Septian Budiman Setiowati, Fiqih Sekar Soviah, Sadri Sri Benti Etika Sukma, Vira Ananda Syafrian, Syafrian Syukri Arief Syukri UNP Viony Anjelina Yulfitrianti, Marlina Yunita, Lasmi