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All Journal Jurnal Periodic Edukimia CHEDS: Journal of Chemistry, Education, and Science
Miftahul Khair
Universitas Negeri Padang
Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Education Energy Materials Science & Nanotechnology Other

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Rancang Bangun DATA MANIA sebagai Multimedia Interaktif Data Keselamatan Bahan Kimia Berbasis Augmented Reality Aruna Pradipta; Malik Aziz; Iqbal Aulia Fajri; Miftahul Khair
Edukimia Vol 2, No 2 (2020): Edukimia - Vol. 02, Issue 02
Publisher : Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (504.801 KB) | DOI: 10.24036/ekj.v2.i2.a115

Abstract

The Design of this Interactive Multimedia is motivated by the increasing number of work accidents that occur in chemical laboratories due to students lack of knowledge of properties about the properties of chemicals and work safety in the laboratory. Based on data obtained from research conducted at the existing SMAN in Temanggung sub-district, it was concluded that the level of student knowledge regarding the aspects of chemicals and work safety in the laboratory was not evenly distributed. Methods in making this application include collecting literature, designing and developing applications, trials and publications. The results of making this application can be used for practician especially students in experiments in chemical laboratories. With this interactive multimedia the Chemical Safety Data based on Augmented Reality can provide convenience in obtaining chemical information and can reduce the risk of work accidents in the Chemistry Laboratory.
Sintesis dan Karakterisasi Karbon Aktif dari Ampas Tebu Diaktivasi menggunakan Gelombang Mikro Hendra Zalmi; Miftahul Khair
Jurnal Periodic Jurusan Kimia UNP Vol 10, No 2 (2021): PERIODIC
Publisher : Departemen Kimia FMIPA UNP

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1245.592 KB) | DOI: 10.24036/p.v10i2.112388

Abstract

Synthesis of activated carbon and physical activation using microwaves. Sugarcane bagasse is carbonized at a temperature of 250 oC for ninety minutes and is activated using microwaves which refer to the principles of green chemistry. Microwave one of the electromagnetic waves that can be at a frequency of 2450 khz. Microwaves are able to work as activator of 450 watts of activated carbon for two minutes and the iodine number is from 203.0560 mg / g to 836.9365 mg / g which meets the indonesian national standard no 06-3730-1995 which is 750 mg / g. Activated carbon was characterized optimally using a FTIR spectrophotometer. The spectra results show the presence of a functional group -OH at wave number 3350-3252 cm-1, C=C at wave number 1570-1320 cm-1, C-O at wave number 1300-900 cm-1, and ch at wave number 995-670 cm-1. Adsorption of activated carbon against rhodamine dye obtained optimal conditions with a concentration of 350 mg / L, time of 120 minutes which has an adsorption capacity of 7.251724 mg / g.
Adsorpsi Anion Nitrat Menggunakan Silika Gel (SiO2) GPTMS Dimodifikasi dengan Dimetilamina Anisa Nahari; Budhi Oktavia; Miftahul Khair; Ananda Putra
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.v11i3.115920

Abstract

Silica or silicon dioxide is a chemical compound with the molecular formula SiO2 which can be obtained from the synthesis of crystals, silica minerals, and vegetables. Compounds resulting from the polymerization of silicic acid, which are composed of a tetrahedral SiO4 unit chain with the general formula SiO2. Each silica atom is surrounded by four oxygen atoms. Silica forms a polyhedral network, where the bonds between oxygen tetrahendral are one and the other. Silica will form a framework that has pores that are quite open and allow other molecules to enter and undergo adsorption on the surface of the silica. Modification of silica is done by adding heat at a certain temperature, adding reagents to the active site of silica will change the silica functional group. Silica with the addition of amine compounds reacted with GPTMS can be used as nitrate anion adsorption to see the absorption capacity of silica against nitrate anions using the batch method. The factors used to see this adsorption capacity include pH at pH 7 with an absorption of 1.931463 mg/g and the percentage of absorption is 79.5%. and contact time with a time of 90 minutes with an absorption of 0.32677 mg/g and the percentage of absorption is 67.28785%.
Impregnasi ZnO Karbon Aktif dari Sabut Kelapa (Cocos nucifera L) Fotokatalis Untuk Degradasi Rhodamin B Rahayu Hardiani; Miftahul Khair
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.v11i3.115842

Abstract

Research on increasing the degradation ability of AC-ZnO catalyst against Rhodamine B by impregnation on activated carbon from coconut fiber (Cocos nucifera L) has been carried out. Activated carbon is catalyzed by ZnO semiconductor catalyst by impregnation method. Impregnation was carried out by varying the addition of activated carbon (AC) 5%, 10%, 15%, 20% and 25% ZnO mass for 6 hours. The catalyst was calcined at 300 C for 105 minutes. For the results of the AC-ZnO adsorption test on Rhodamine B, the catalyst was tested on the degradation of Rhodamine B solution (10 ppm) with UV irradiation. obtained 89.76%. This shows that activated carbon from coconut fiber can support to increase the role of ZnO in the degradation of Rhodamine B. Characterization of the optimum degradation yield was carried out by FTIR. The characterization results showed that the ZnO catalyst was successfully formed.
Peningkatan Kemampuan Degradasi ZnO Terhadap Rhodamin B Dengan Impregnasinya Pada Karbon Aktif Dari Ampas Tebu Winda Anisa; Miftahul Khair
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.v11i3.115994

Abstract

Research has been carried out with the aim of knowing the characteristics of activated carbon made from bagasse waste to be used as a support for zinc oxide (ZnO) catalysts using the impregnation method and the ability of the catalyst to degrade Rhodamin B dyes. Activated carbon is impregnated with Zn(NO3)2.6H2O with variations activated carbon 5%, 10%, 15%, 20%, and 25% to 15 gram mass of Zn(NO3)2.6H2O. The impregnated KA/ZnO was then contacted with 10 ppm Rhodamine B dye with a degradation time of 120 minutes. The mass of KA/ZnO used was 25 mg, 50 mg and 75 mg. The FTIR (Fourier Transform Infra Red) results of the KA/ZnO catalyst show that Zn-O molecules have entered into the pores of the activated carbon marked by the appearance of absorption peaks at wavelengths of 426.28 cm-1, 419.52 cm-1, and 437.85 cm-1 . The results of UV-Vis spectrophotometer measurements obtained the highest degradation percentage of Rhodamin B dye, namely 88.23% at 10% KA/ZnO with a catalyst mass of 75 mg.
SINTESIS FOTOKATALIS ZnO/ZEOLIT DENGAN APLIKASINYA MENGURANGI KONSENTRASI RHODAMINE B DALAM LARUTAN BERAIR Ulfa Azarria; Miftahul Khair
CHEDS: Journal of Chemistry, Education, and Science Vol 6, No 2 (2022)
Publisher : Universitas Islam Sumatera Utara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30743/cheds.v6i2.6080

Abstract

Fotokatalis ZnO/zeolit memiliki keunggulan dalam menurunkan kadar Rhodamine B dalam air dengan jangkauan harga yang relatif murah. Sintesis Fotokatalis ZnO/zeolit telah dilakukan dengan metode impregnasi basah . hasil sintesis telah dikarakterisasi dengan XRD dan FTIR, kinerja adsorpsi dan dekomposisi fotodegradasi Rhodamine B 10 ppm dievaluasi dengan spektrofotometer UV-Vis. Dinamika adsorpsi ditinjau dari variasi massa yang telah berhasil mendegradasi Rhodamine B 10 ppm dengan persentase degradasi 97,5% dengan massa optimum katalis 0,6 g dan variasi massa yang telah berhasil mendegradasi Rhodamine B 10 ppm dengan persentase degradasi 98,29% dengan waktu optimum 75 menit. Fotokatalis terbukti menjadi bahan yang sangat efisien dan layak dalam pemurnian air.
SINTESIS DAN PENENTUAN CELAH PITA ZnO/SiO2 DARI PREKURSOR ZINC NITRATE YANG DIKALSINASI Ilma Zelvina; Miftahul Khair
CHEDS: Journal of Chemistry, Education, and Science Vol 7, No 1 (2023)
Publisher : Universitas Islam Sumatera Utara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30743/cheds.v7i1.6597

Abstract

Sintesis ZnO/SiO2 dengan metode pendispersi sonikasi telah dilakukan dengan beberapa variasi. Tujuan dari penelitian ini adalah untuk menentukan nilai celah pita dari ZnO/SiO2 yang diperoleh dengan UV-DRS. Hasil karakterisasi dengan UV-DRS menunjukkan nilai minimum celah pita ZnO/SiO2 sebesar 3,78 eV pada variasi 10% masssa Zn(NO3)2.6H2O untuk setiap 5 g silika dalam pelarut air dibantu sonikasi selama 15 menit.
SINTESIS ZEOLIT NaP MELALUI METODE SINTESIS ZEOLIT NaX, EFEK GELOMBANG MIKRO SEBAGAI AKTIVATOR Indah Pratiwi; Miftahul Khair
CHEDS: Journal of Chemistry, Education, and Science Vol 7, No 1 (2023)
Publisher : Universitas Islam Sumatera Utara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30743/cheds.v7i1.6579

Abstract

Penelitian ini bertujuan untuk mengetahui pengaruh penggunaan gelombang mikro pada proses sintesis zeolit. Kristal zeolit disintesis dengan bantuan gelombang mikro sebagai activator. Campuran dari larutan natrium silikat dengan natrium aluminat diaduk dengan kuat menggunakan magnetic stirrer pada suhu 50°C dan dilanjutkan dengan proses aktivasi selama 1, 2, 3, 4, 5 menit menggunakan microwave serta dilanjutkan waktu aging selama 12 jam, lalu dikeringkan dalam oven suhu 105 °C. Produk yang didapat kemudian dikarakterisasi dengan FTIR, XRD dan BET. Hasil penelitian dengan FTIR dan XRD menunjukkan bahwa prosedur sintesis yang di ikuti dengan aktivasi gelombang mikro memperlihatkan potensi pembentukan zeolit NaP serta menghasilkan luas permukaan yang meningkat hingga 125.797 m2/g.
SINTESIS ZEOLIT NaP MELALUI METODE SINTESIS ZEOLIT NaX, EFEK ULTRASONIK SEBAGAI AKTIVATOR Lara Triyuni; Miftahul Khair
CHEDS: Journal of Chemistry, Education, and Science Vol 7, No 1 (2023)
Publisher : Universitas Islam Sumatera Utara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30743/cheds.v7i1.6580

Abstract

Penelitian ini bertujuan mengetahui pengaruh penggunaan gelombang ultrasonik pada proses sintesis zeolit NaP menggunakan metode sintesis zeolit NaX. Pembuatan zeolit NaP melalui tahapan preparasi, aktivasi, aging, dan dehidrasi. Aktivasi menggunakan metode green chemistry yaitu gelombang ultrasonik, yang memiliki kelebihan yaitu sangat sederhana, reaksi cepat dan dapat mengoptimalkan penggunaan larutan kimia. Dengan variasi waktu masing-masing 10, 20, 30, 40 dan 60 menit dan waktu aging selama 12 jam, lalu dikeringkan dalam oven suhu 105 °C. Produk dikarakterisasi dengan FTIR, XRD dan BET. Hasilnya menunjukkan potensi pembentukan zeolit NaP. Produk setelah aktivasi melalui sonikasi mengurangi ukuran partikel menjadi 19,83 nm dan luas permukaan yang luas meningkat hingga 125.499 m2/g.
PENENTUAN CELAH PITA KATALIS ZnO/ZEOLIT YANG DISINTESIS DENGAN METODA SONIKASI Nabila Fikriandini; Miftahul Khair
CHEDS: Journal of Chemistry, Education, and Science Vol 7, No 1 (2023)
Publisher : Universitas Islam Sumatera Utara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30743/cheds.v7i1.6609

Abstract

This study aims to determine the ZnO/Zeolite photocatalyst synthesis process with variations of ZnO/Zeolite 5%, 10%, 15%, 20%, and 25%. This research aims to determine the band gap of the ZnO/Zeolite catalyst. The method used in synthesizing ZnO/Zeolite photocatalysts is the sonication method with time variations of 15 minutes, 30 minutes, 45 minutes, and 60 minutes. ZnO/Zeolite photocatalysts were characterized with FTIR instruments to determine functional groups and the band gap energy values of ZnO/Zeolite catalysts using UV-DRS (Ultraviolet Diffuse Reflectance Spectroscopy) instruments. Based on UV-DRS data analysis using the Kubelka-Munk method, the bandgap energy data for each catalyst were obtained as follows 2.34 eV; 2.32 eV; 2.13 eV; 2.21 eV; and 2.22 eV.
Co-Authors Ananda Putra Anisa Nahari Aruna Pradipta Budhi Oktavia Dipnorita Retno Hendra Zalmi Ilma Zelvina Indah Pratiwi Indang Dewata Iqbal Aulia Fajri Lara Triyuni Malik Aziz Mardiana Julita Muhandis Shiddiq Nabila Fikriandini Rahayu Hardiani Ulfa Azarria Winda Anisa