Jurnal Periodic Jurusan Kimia UNP
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.
Articles
343 Documents
<![CDATA[Pengaruh Massa Surfaktan P104 terhadap Kristalinitas dan Ukuran Kristal Silika Mesopori ]]>
<![CDATA[Ahdiatun Nuri]]>;
<![CDATA[Syamsi Aini]]>
<![CDATA[ Jurnal Periodic Jurusan Kimia UNP Vol 10, No 1 (2021): PERIODIC ]]>
Publisher : <![CDATA[Departemen Kimia FMIPA UNP ]]>
Show Abstract
|
Download Original
|
Original Source
|
Check in Google Scholar
|
Full PDF (1311.824 KB)
|
DOI: 10.24036/p.v10i1.110481
<![CDATA[Mesoporous silica is a silka solid that has a pore size between 2-50 nm and can be used in various fields such as a catalyst, drug diluents, sensors, adsorption, stationary phase for chromatography and others. Mesoporous silica was synthesized using the precursor natrum silicate (Na2SiO3) from silica sand because it is more economical and easy to obtain. This study aims to determine the effect of Pluronic 104 (1g; 1.5g; and 2g) surfactant on particle size and crystallinity of mesoporous silica with Na2SiO3 as a base material synthesized from silica sand. Mesoporous silica was synthesized using the sol-gel method because it can be done at low temperature, then followed by calcination at 550 °C for 5 hours to remove the template. The synthesized Mesoporous silica was characterized using high angle X-Ray Diffraction (XRD) 2θ = 10°-80°. The results of XRD data measurements showed a diffraction pattern that appeared as wide and low peaks at 2θ = 22°; 21.9°; 22.7° for products SM01, SM02 and SM03 respectively indicate that the synthesized silica is amorphous. Mesoporous silica with the highest intensity and crystallinity was obtained in the SM03 sample with the addition of 2 grams of P104.]]>
<![CDATA[Degradasi Zat Warna Remazol Yellow Fg dengan Metode Fotosonolisis ]]>
<![CDATA[Fauziah Rahma Yasin]]>;
<![CDATA[Hary Sanjaya]]>
<![CDATA[ Jurnal Periodic Jurusan Kimia UNP Vol 9, No 1 (2020): PERIODIC ]]>
Publisher : <![CDATA[Departemen Kimia FMIPA UNP ]]>
Show Abstract
|
Download Original
|
Original Source
|
Check in Google Scholar
|
DOI: 10.24036/p.v9i1.108744
<![CDATA[This research was conducted on the degradation of Remazol Yellow FG by using the photosonolysis method with the aim of determining the optimum time and the amount of TiO2 used to doping optimum ZnO in degrading Remazol Yellow FG dyes. The degradation percentage results obtained from the absorbance value measured using UV-Vis Spectrophotometer. (Λmaks) Remazol Yellow FG obtained from UV-Vis spectrophotometer measurements were 415 nm. The results showed that the optimum irradiation and sonication time to degrade Remazol Yellow FG was 60 minutes with a degradation percentage of 74.24%. The effect of variations in the amount of TiO2 doping showed optimum results at 20% ZnO-TiO2, with a degradation percentage of 80.54%. The XRD analysis results obtained ZnO, TiO2 and ZnO-TiO2 crystal sizes respectively 48.50-80.70 nm, 48.96-83.81 nm and 48.57-96.58 nm. UV-DRS analysis obtained band gap values respectively 3.36 eV, 3.22 eV and 3.11 eV]]>
<![CDATA[Penentuan Limbah Mikroplastik Polyethylene Terephthalate (PET) dengan Metoda Glikolisis dalam Air Laut di Kota Padang ]]>
<![CDATA[Kasma Warni]]>;
<![CDATA[Indang Dewata]]>
<![CDATA[ Jurnal Periodic Jurusan Kimia UNP Vol 10, No 1 (2021): PERIODIC ]]>
Publisher : <![CDATA[Departemen Kimia FMIPA UNP ]]>
Show Abstract
|
Download Original
|
Original Source
|
Check in Google Scholar
|
Full PDF (588.594 KB)
|
DOI: 10.24036/p.v10i1.109582
<![CDATA[Polyethylene Terephthalate (PET) is a type of plastic waste commonly found in the sea especially disposable soft drink bottles. PET plastic waste can decompose into harmful microplastics if swallowed by marine life. This study aims to determine the microplastic content of PET type in seawater in the city of Padang by glycolysis method using ethylene glycol (EG) solvent with a sodium carbonate as catalyst (Na2CO3) for depolymerization of PET to be a monomer of bis (2-hydroxyethyl terephthalate) (BHET). Glycolysis is carried out for 1 hour at 1960C. In this study, the variation of sodium carbonate (Na2CO3) catalyst mass used are 0.02 gram, 0.04 gram, 0.06 gram, 0.08 gram, and 0.1 gram) and variation of ratio PET bottles: ethylene glycol (gram: mL) are 10 : 20, 10:30, 10:40 and 10:50. The result obtained is 72.22% BHET product under optimum condition with amount of EG of 30 mL and Na2CO3 catalyst mass of 0.06 grams. The BHET was identified using FTIR to confirm the OH-, C-O, and C = O groups. Seawater samples are taken from three locations namely Padang beach, Tabing beach and Gajah Padang beac. The result shows absence of PET type microplastic in these samples.]]>
<![CDATA[Pengaruh Konsentrasi Awal terhadap Penyerapan Ion Logam Cr+6 menggunakan Biomassa Alga Hijau Mougeotia Sp yang Diimobilisasi dengan Natrium Silika ]]>
<![CDATA[Mulya Dwi Arif]]>;
<![CDATA[Mawardi Anwar]]>
<![CDATA[ Jurnal Periodic Jurusan Kimia UNP Vol 9, No 2 (2020): PERIODIC ]]>
Publisher : <![CDATA[Departemen Kimia FMIPA UNP ]]>
Show Abstract
|
Download Original
|
Original Source
|
Check in Google Scholar
|
Full PDF (637.678 KB)
|
DOI: 10.24036/p.v9i2.110164
<![CDATA[Mougeotia Sp green algae biomass is a biosorbent used in the absorption of heavy metals in industrial waste, because of the presence of functional groups that bind to heavy metal ions. However, it has one disadvantage: it is easily damaged by other microorganisms. To improve the physical and chemical properties of algae it is necessary to immobilize the sodium silica. This study aims to determine the maximum absorption and absorption capacity of Cr+6 metal ions by immobilized green algae Mougeotia Sp using sodium silica with a contact technique using a column and measured by Atomic Absorption Spectrophotometer (AAS). The data obtained showed that the interaction between metal ions and the algal biomass of Mougeotia Sp immobilized on sodium silica obtained the optimum concentration at 250 mg /L. The maximum absorption capacity is 7.5815 mg / g with absorption efficiency of 52.0653%. Furthermore, characterization using FTIR shows that functional groups with active mean are silanol and siloxane which are the binding sites for functional groups such as cacbixyl, carbonyl and amines. The biosorption of Cr + 6 metal ions using Mougeotia Sp green algae biomass immobilized with sodium silica fulfills the Langmuir isotherm equation with a regression coefficient (R2) of 0.9294.]]>
<![CDATA[Degradasi Rhodamin B dengan Katalis ZnO-Fe Menggunakan Metode Fotosonolisis ]]>
<![CDATA[Wahyunita Wulandari]]>;
<![CDATA[Hary Sanjaya]]>;
<![CDATA[Yohandri Yohandri]]>
<![CDATA[ Jurnal Periodic Jurusan Kimia UNP Vol 10, No 2 (2021): PERIODIC ]]>
Publisher : <![CDATA[Departemen Kimia FMIPA UNP ]]>
Show Abstract
|
Download Original
|
Original Source
|
Check in Google Scholar
|
Full PDF (233.721 KB)
|
DOI: 10.24036/p.v10i2.112428
<![CDATA[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.]]>
<![CDATA[Kajian Pengaruh Konsentrasi Asam Nitrat Terhadap Kemurnian Silika dari Batu Rijang ]]>
<![CDATA[Nureztiti Azwar]]>;
<![CDATA[Syamsi Aini]]>
<![CDATA[ Jurnal Periodic Jurusan Kimia UNP Vol 9, No 1 (2020): PERIODIC ]]>
Publisher : <![CDATA[Departemen Kimia FMIPA UNP ]]>
Show Abstract
|
Download Original
|
Original Source
|
Check in Google Scholar
|
Full PDF (1503.612 KB)
|
DOI: 10.24036/p.v9i1.108839
<![CDATA[Chert is stone that contains silica (SiO2) ≥ 60%. High silica content in chert stones can be used as an alternative source of potential silica in synthesizing sodium silicate (Na2SiO3) or other industrial needs. Purification is used to separate silica from other metals contained in the chert stone using HNO3. The qualitative and quantitative analysis of chert stone with XRF reveal that it contained a small amount of impurity oxide such as Al2O3, Fe2O3, MgO, K2O, CaO with the highest contain is SiO2 about 79.99%. After several purification steps, silica percentage from the chert stone increased to 86.45%. With this increasing percentage of silica, its potential to use it as precursor Na2SiO3.]]>
<![CDATA[Pengaruh Konsentrasi Awal Larutan terhadap Penyerapan Ion Logam Berat Cr3+ Menggunakan Biomassa Alga Hijau Mougeotia sp. Yang Diimobilisasi Pada Natrium Silika ]]>
<![CDATA[Helmi Susanti]]>;
<![CDATA[Mawardi Anwar]]>
<![CDATA[ Jurnal Periodic Jurusan Kimia UNP Vol 9, No 2 (2020): PERIODIC ]]>
Publisher : <![CDATA[Departemen Kimia FMIPA UNP ]]>
Show Abstract
|
Download Original
|
Original Source
|
Check in Google Scholar
|
Full PDF (1523.256 KB)
|
DOI: 10.24036/p.v9i2.110117
<![CDATA[Excessive heavy metal contamination in the environment can have negative effects on the environment and human health, one of which is the metal ion Cr3+. To overcome the increase in heavy metal ions, a biosorption method was used. Efforts made to increase the stability of biomass absorption are immobilization with sodium silica. Immoblization is the process of binding cells into the supporting matrix. The purpose of this study was to determine the optimum conditions for the absorption of Cr3+ metal ions, the initial concentration of the solution and the ratio of absorption to immobilized biomass. The results showed that the optimum absorption of Cr3+ metal ions occurred at the initial concentration of 250 mg/L solution and decreased with increasing concentration. The maximum absorption capacity obtained is 6.7409 mg/g. The biosorption of Cr3+ ions fulfills the Langmuir Isotherm equation with R2 of 0.898.]]>
<![CDATA[Pengaruh Agen Pengikat Silang dan Waktu Polimerisasi Poli Asam Tanat pada Efisiensi Dye Sensitized Solar Cell (DSSC) ]]>
<![CDATA[Yusnita Pitri Mayenti]]>;
<![CDATA[Hardeli Hardeli]]>;
<![CDATA[Hary Sanjaya]]>;
<![CDATA[Sri Benti Etika]]>
<![CDATA[ Jurnal Periodic Jurusan Kimia UNP Vol 10, No 2 (2021): PERIODIC ]]>
Publisher : <![CDATA[Departemen Kimia FMIPA UNP ]]>
Show Abstract
|
Download Original
|
Original Source
|
Check in Google Scholar
|
Full PDF (642.657 KB)
|
DOI: 10.24036/p.v10i2.109623
<![CDATA[Abstract— Dye sensitized solar cell (DSSC) is a device that can convert light energy into electrical energy. Research on the DSSC continues to look for DSSCs with high efficiency values. The efficiency of DSSC is influenced by many things, one of which is the ability of the dye to absorb light energy. The dye used in this research is poly tannic acid obtained from the polymerization process of tannic acid. This polymerization is carried out to improve the ability of the dye to absorb sunlight. TiO2 / Cu paste was made using the sol gel method and coated on ITO glass using the doctor blade method. The formed layer is immersed in dye while the counter electrode is made with a candle flame. The DSSC was assembled to form a sandwich structure and electrolyte was dropped on the two electrodes. DSSC measured the voltage generated with a multimeter. The results of the UV-Vis analysis on the polymerized dye showed a bathochromic shift and an increase in the absorbance value. The results of FTIR analysis on polymerized dyes appeared ether groups in the range 1050–1250cm-1. The presence of this ether group indicates the formation of tannic acid poly. The highest DSSC efficiency found with the polymerized dye was 7.69% with polymerization time of 14 hours and the volume of crosslinking agent (TMPGDE) 115µL.Keywords: DSSC, Polymerization, Tannic Acid, Poly Tannic Acid, Efficiency]]>
<![CDATA[Degradasi Congo Red Secara Fotosonolisis Menggunakan Katalis ZnO-TiO2 ]]>
<![CDATA[Amelia, Reza]]>;
<![CDATA[Sanjaya, Hary]]>
<![CDATA[ Periodic Vol 8, No 2 (2019): PERIODIC ]]>
Publisher : <![CDATA[Jurusan Kimia FMIPA UNP ]]>
Show Abstract
|
Download Original
|
Original Source
|
Check in Google Scholar
|
Full PDF (23.431 KB)
|
DOI: 10.24036/p.v8i2.108767
<![CDATA[This study aims to determine the optimum time and amount of TiO2 used for doping the optimum ZnO in degrading Congo Red dye. The results of the percentage degradation were obtained from the absorbance value which was measured using a UV-Vis Spectrophotometer. (λmax) Congo Red obtained from measurements using a UV-Vis Spectrophotometer is 498 nm. The results showed that the optimum irradiation and sonication time to degrade Congo Red was 75 minutes with a degradation percentage of 98.11%. On the effect of variations in the amount of TiO2 doping showed optimum results at 20% ZnO-TiO2, with a degradation percentage of 96.85%. The results of XRD analysis showed that the crystal size of 20% ZnO-TiO2 was 48.57-96.58 nm. While analysis with UV-DRS obtained a band gap value of 20% ZnO-TiO2 which is 3.11 Ev.]]>
<![CDATA[Pembuatan Karbon Aktif Secara Kimia Hijau Dari Limbah Cangkang Kelapa Sawit (Elaeis guineensis) Dengan Aktivator Microwave ]]>
<![CDATA[Muhammad Taufik]]>;
<![CDATA[Tirta Suci Dian Kasih]]>;
<![CDATA[Miftahul Khair]]>
<![CDATA[ Jurnal Periodic Jurusan Kimia UNP Vol 10, No 1 (2021): PERIODIC ]]>
Publisher : <![CDATA[Departemen Kimia FMIPA UNP ]]>
Show Abstract
|
Download Original
|
Original Source
|
Check in Google Scholar
|
Full PDF (1547.834 KB)
|
DOI: 10.24036/p.v10i1.110580
<![CDATA[Activated carbon from palm kernel shell has been prepared by using microwave assisted activation. Carbonization was conducted at mild condition of 400ºC for 90 minutes heating time. Microwave irradiation 300 Watt for 2 minutes with frequency 2.45 GHz increase s the carbon iodine number from 452.4021 mg / g up to 829.4040 which is higher than SNI 06-3730-1995 requirement of 750 mg / g for activated carbon. FTIR spectra results show that activated carbon has - OH groups at wave numbers of 3000-3500 cm -1 , C = C at wave numbers of 1550-1650 cm -1 , C - O at wave numbers of 1000-1260 cm -1 and C - H at wave numbers of 810-770 cm -1 . Adsorption test results showed that the prepared activated carbon was able to absorb Pb+2 ion at the optimum concentration of 8 0 mg / L. Adsorption isotherms study conducted by the Langmuir equation produces a regression coefficient R 2 = 0.8903 with a maximum of adsorption capacity of 13.3868 mg / g.]]>
