Article Per Year (5 Year)
p-Index From 2020 - 2025
0
P-Index
This Author published in this journals
All Journal Jurnal Zeolit Indonesia Jurnal Material dan Energi Indonesia
Diana Rakhmawaty
Department of Chemistry, Faculty of Mathematics and Natural Sciences, Universitas Padjajaran, Sumedang 45643
Education Energy Materials Science & Nanotechnology

Published : 2 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 2 Documents
Search

 1 
PHOTOCATALYTIC PRODUCTION OF TiO2-NATURAL ZEOLITE FROM TASIKMALAYA FOR PHOTODEGRADATION OF METHYLENE BLUE Arfan Sani A.; Atiek Rostika N.; Diana Rakhmawaty
Jurnal Zeolit Indonesia Vol. 8 No. 1 (2009)
Publisher : Jurnal Zeolit Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Photocatalyst is reaction process of one materials to another materials which aided by energy from ultraviolet radiation and solid catalyst. The study conducted by making a catalyst based on variation concentrates from natural zeolite Cikalong-Tasikmalaya with addition of TiO2. The test of photocatalytic activity was conducted on methylene blue. The purpose this study to obtain a new photocatalytic is modified of natural zeolite with TiO2 which expected had a high reactivity so able to used on waste fluid processing. The step was conducted were activated natural zeolite, than making of photocatalytic from TiO2 and natural zeolite, and the last is drying on the oven and calcination at 5000C. In the diffraction pattern of TiO2-zeolit (20%) there was a peak of TiO2 around of 2θ about 25,3o, it is indicated that TiO2 was surroundings on natural zeolite. TiO2-zeolit (20%) which was analyzed with SEM showed that active metal of TiO2 has been surroundings on surface of zeolite. Analysis of gas absorption (GSA) with BET methods showed an increase wide of 7,0 m2/g for zeolite and19,4 m2/g for TiO2-zeolit (20%). Best degradation of methylene blue was indicated by TiO2-zeolit (20%) with the value of 82,5% after the radiation with ultraviolet for 80 minutes and measured by visible UV spectrophotometer.
ELEKTROLIT APATIT LANTANUN SILIKAT BERBAHAN DASAR SILIKA SEKAM PADI ATIEK ROSTIKA NOVIYANTI; YATI B YULIYATI; DIANA RAKHMAWATY; S SOLIHUDIN; ROEKMIATI TJOKRONEGORO
Jurnal Material dan Energi Indonesia Vol 6, No 02 (2016)
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (374.3 KB) | DOI: 10.24198/jmei.v6i02.10952

Abstract

Silika komersil merupakan salah satu bahan yang digunakan untuk preparasi elektrolit padatan apatit lantanum silikat selama ini. Sekam padi mengandung silika (SiO2) dengan jumlah yang tinggi yaitu 87-98%.  Penelitian ini bertujuan menyintesis apatit lantanum silikat dengan sumber silikon dari silika sekam padi. Untuk mengetahui pengaruh penggunaan silikon dari sumber yang berbeda struktur dan morfologi kedua lantanum silikat apatit dikarakterisasi dengan XRD dan SEM.  Morfologi apatit lantanum silikat menggunakan silikat komersial nampak lebih kompak dengan densitas lebih tinggi. Struktur dihaluskan dengan menggunakan metode Le bail dari rietica kedua elektrolit apatit memiliki struktur dengan grup ruang P 63/m.
Co-Authors Arfan Sani A. Atiek Rostika N. Atiek Rostika Noviyanti Roekmiati Tjokronegoro S SOLIHUDIN YATI B YULIYATI