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Jurnal Periodic Jurusan Kimia UNP
Published by Universitas Negeri Padang
ISSN : -     EISSN : 23391197     DOI : https://doi.org/10.24036/p.v11i2.113715
Core Subject : Science, Engineering,
Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Energy Materials Science & Nanotechnology
Periodic adalah jurnal nasional yang berisi artikel-artikel bidang ilmu kimia, seperti bidang Kimia Analitik, Kimia Fisika, Kimia Anorganik, Kimia Organik dan Biokimia. Jurnal ini mempublikasikan hasil penelitian original, komunikasi singkat, dan artikel review. Artikel yang telah diterbitkan dalam jurnal ini berarti bahwa kegiatan penelitian yang diterbitkan adalah belum, dan tidak akan diterbitkan di tempat lain. Periodic (e-ISSN 2339-1197) diterbitkan oleh Jurusan Kimia dan mulai tahun 2022 disebut Departemen Kimia, Fakultas Matematika dan Ilmu Pengetahuan Alam, Universitas Negeri Padang, Indonesia. Periodic terbit berdasarkan berdasarkan surat edaran Direktorat Jenderal Pendidikan Tinggi No. 152/E/T/2012 tentang publikasi karya tulis ilmiah dan terbit sejak Oktober 2012.
Arjuna Subject : Kimia(semua kategori) - Kimia (Lain-Lain)
Articles 21 Documents
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Search results for , issue "Vol 12, No 3 (2023): PERIODIC" : 21 Documents clear
Studi Kompleks Asosiasi Logam Berat Timbal (Pb) dengan Menggunakan KI dan Methyl Green R, Yoanatul Hasanah; Nasra, Edi; Nizar, Umar Kalmar; Etika, Sri Benti
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.v12i3.118451

Abstract

The measurement methods in this study used are UV-Vis and AAS ( Atomic Absorption Spectrophotometer). The Pb(NO3)2 solution is dissolved with excess iodide so that it forms a PbI42- anion complex. This anion complex is then reacted with the cationic dye methyl green forming an association complex [PbI4][MG].The result of this study is that the maximum wavelength of the PbI42- anion complex is at 267 nm with stability time of 2 hours. Then the iodide concentration is 0,333 M with an absorbance 0.795 then the maximum wavelength of the association complex [PbI4][MG] is 636 nm at pH 5 and methyl green concentration is 0.00013% and has a concentration factor 20,39 times.
Pengujian Aproksimat Karbon Pelepah Kelapa Sawit (Elaeis guineensis Jacq) Farras, Muhammad Sadiq; Putra, Ananda
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.v12i3.118338

Abstract

The carbon approximation test of palm frond has been successfully carried out. Carbon made at a temperature of 370 oC with variations in the length of time of 45, 60, 75 and 90 minutes was found to meet the test levels of SNI No. 06-3720-1995 and the best carbonization time for 75 minutes. Palm fronds are waste from palm plants that have no economic value and are even left to become garbage after being cut down. Therefore, proper handling is needed to manage palm fronds so that they are more useful in the environment and can have economic value later. That is to process palm fronds into activated carbon because they contain the main composition, namely cellulose, hemicellulose and lignin.
Adsorpsi Zat Warna Methylene Blue Menggunakan Karbon Aktif Kulit Kelengkeng (Euphoria longan lour) Dengan Metode Batch Harmaiyani, Risky; Amran, Ali; Oktavia, Budhi; Kurniawati, Desy
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.v12i3.118807

Abstract

In Indonesia, longan skin has not been widely used. Longan skin contains lignin which has good absorption ability. The cause of this research is to calculate the finest absorption capability of longan peel activated carbon against methylene blue dye using the batch method. The results confirmed that the optimum absorption ability for the absorption of methylene blue at pH 4, concentration of 600 ppm, and contact time of 120 minutes at a stirring speed of 200 rpm, and a mass of 0.2 grams was 69.0679 mg/g.
Efektifitas ZnO doping TiO2 Dalam Mendegradasi Zat Warna Metil Hijau dengan Metode Fotolisis Alfarisi, Fadil; Sanjaya, Hary; Beri, Deski; Etika, Sri Benti
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.v12i3.118598

Abstract

The textile industry sector in Indonesia is progressing. This progress is not followed by good and effective waste management. Methyl green dye waste is one example. Methyl green is organic waste that is difficult to decompose and is toxic. Therefore, an effective method is needed to decompose organic waste into environmentally friendly compounds using the photolysis method. This study aims to obtain the optimum time and the optimum concentration of TiO2 doping on the degradation of Methyl green by photolysis. The percentage of degradation of Methyl green was obtained from the measurement of the absorbance value using a UV-Vis spectrophotometer at the maximum wavelength of Methyl green (λmax) and the maximum wavelength was obtained at 640 nm. The results are the optimum time of degradation of Methyl green dye at radiation time of 150 minutes with a degradation percentage of 97.5%. In the variation of TiO2 dopant concentration, the optimum concentration of TiO2 dopant was found at 10% ZnO-TiO2 with 95% degradation.
Pengaruh Konsentrasi Monomer Terhadap Pembentukan Poli Kuersetin Sebagai Zat Warna pada Dye Sensitized Solar Cell Putri, Yollanda Prissila; Hardeli, Hardeli
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.v12i3.118555

Abstract

Dye-Sensitized Solar Cell (DSSC) is a type of dye-based third-generation solar cell that functions as a photon absorber. Modifications were made to the quercetin dye to increase the double bonds, and the semiconductor used was done with TiO2 – ZnO doping. Doping can reduce the energy gap, thereby increasing the conductivity of TiO2. The TiO2 – ZnO layer was made by the doctor blade method on ITO glass and the dye was immersed in poly quercetin. The DSSC circuit is arranged to form a sandwich facing each other, between the working electrode and the counter electrode. DSSC efficiency can be tested from the results of resistance and voltage measurements on UV light with a power of 24 watt/m2 using a digital multimeter. The highest efficiency was produced at a monomer concentration of 2.5 grams of 9.4% from a long polymer chain.
Pengukuran Anion Anorganik Secara Simultan dalam Sampel Air Tanah dan Air Ledeng Menggunakan Kromatografi Ion Amin, Muhammad; Oktavia, Budhi
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.v12i3.126222

Abstract

Ion chromatography is an advanced and highly sensitive form of ion exchange chromatography that can effectively detect ion species, whether organic or inorganic ions. This research study utilized ion chromatography with a suppressed conductivity detection system to separate and measure the concentration of fluoride, chloride, nitrite, bromide, nitrate, phosphate, and sulfate ions in groundwater and tap water samples. The eluent solution used in this separation contained 6.0 mmol/L Na2CO3 and 0.25 mmol/L NaHCO3, which was crucial in ensuring the accuracy and selectivity of the detections. The samples were collected in 3 sub-districts in Ternate City, and the study's findings shed light on the water quality in the area.
Pengaruh pH Terhadap Rendemen Silika Gel dari Kulit Tebu Tibarau (Saccharum spontaneum Linn) Menggunakan Metode Sol-Gel Ramadhani, Rini; Aini, Syamsi
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.v12i3.118870

Abstract

Several natural materials containing silica have been widely used to synthesize silica nanoparticles such as bagasse, rice husks, which can be in the form of dry and non consumable strands that function as inner protectors in the form of endospermium and embryos. Tibarau sugarcane is one of the renewable organic materials. The synthesis of silica nanoparticles from sudden sugarcane skin tibarau using the sol-gel method has been carried out, therefore we need to synthesize them from renewable materials as well. One of the renewable materials is organic. Different base materials require different reactions. One of the different synthesis is husk ash wherein, husk ash has amorphous phase characteristics ranging from 20-25o. The results of the synthesis of silica nanoparticles the effect of pH on the yield of silica gel, obtained the optimum pH at pH 8 and the results of the synthesis were characterized by FTIR to determine the functional groups containing silanol and siloxane functional groups and XRD to determine the crystallinity and the formed phase at 2θ = 31,7. Silica nanoparticles from sugarcane husk suddenly have a crystalline phase as well as an amorphous phase.
Identifikasi Senyawa Metabolit Sekunder pada Daun Salam (Syzygium polyanthum) Erwan, Meriska Octavia; Parbuntari, Hesty
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.v12i3.118432

Abstract

Syzygium polyanthum or bay leaf is a plant that belongs to the Myrataceae family. Almost all parts of this plant can be used, such as roots, bark, leaves, flowers, fruit, and young shoots. But the part that is most often consumed is the leaves, which are widely used traditionally as a remedy for stomach aches, overcoming gout, high cholesterol, stroke, stomach ulcers, and improving blood circulation. In this study, identification of secondary metabolites contained in Syzygium polyanthum was carried out. The results of the identification indicate that Syzygium polyanthum contains secondary metabolites such as flavonoids, alkaloids, terpenoids, and saponins.
Pengaruh Kulit Langsat (Lansium Domesticum) Yang Diimobilisasi Dengan Natrium Silikat Terhadap Penyerapan Ion Logam Zn2+ Dalam Larutan Addawiyah, Nadiyatul; Kurniawati, Desy
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.v12i3.118479

Abstract

Zinc is the fourth most used metal after iron, aluminum and copper and and it pollutes terrestrial and aquatic ecosystems. The primary issue with zinc is that it is non-biodegradable and will build up in water. To overcome this Zn metal, biosorption employs a batch method by using langsat peel immobilized with sodium silicate as a biosorbent, which is more efficient, environmentally friendly, and improves the adsorbent performance in the adsorption process. In this study, the parameters tested were variations in pH, solution concentration, particle size, contact time, and variations in stirring speed. The results showed that the maximum absorption capacity of the metal ion Zn2+ using sodium silicate immobilized langsat peel obtained through the Langmuir isotherm equation was 20.4081 mg/g in optimum state of the adsorption process at pH 4, solution concentration 300 ppm, particle size 150 m, time contact for 90 minutes and the stirring speed of 200 rpm.
Pengaruh Variasi NaOH Pada Polimerasi Kuersetin Terhadap Efisiensi DSSC Hijri, Fadhillah; Hardeli, Hardeli
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.v12i3.118622

Abstract

Dye-sensitive solar cells are third-generation solar cells that convert photon energy into electrical energy. DSC solar cells use dyes to increase efficiency. The dye used is polymerized first to increase the amount of π -π* so that more photons are absorbed and efficiency increases. The dye used in this research is quercetin which is polymerized with a glutaraldehyde crosslinking agent. Quercetin polymerization can be influenced by several factors, one of which is NaOH which acts as an initiator. NaOH plays a role in opening the epoxy ring so that the polymer chain gets longer. ITO glass is coated with TiO2 electrodeposited with ZnO. The results of the measurement of the highest efficiency were found in the 1% NaOH of 8.33% with a density of 0.52 g/cm3 and a degree of polymerization of 3.05

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