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All Journal Al-Fiziya: Journal of Materials Science, Geophysics, Instrumentation and Theoretical Physics Jurnal Sains Materi Indonesia IPTEK The Journal for Technology and Science JURNAL FISIKA Sainteknol : Jurnal Sains dan Teknologi Jurnal Spektra Jurnal Keramik dan Gelas Indonesia Omega: Jurnal Fisika dan Pendidikan Fisika Jurnal Teknologi Mineral dan Batubara INDONESIAN JOURNAL OF APPLIED PHYSICS Indonesian Mining Journal Indonesian Journal of Chemistry Jurnal Elektronika dan Telekomunikasi Jurnal Teknik Metalurgi Indonesian Physical Review Jurnal Riset Teknologi Industri Jurnal Keramik dan Gelas Indonesia Jurnal Ilmu Pengetahuan dan Teknologi (IPTEK) Makara Journal of Science Makara Journal of Technology Jurnal Teknologi Mineral dan Batubara Jurnal Polimesin Jurnal Sains Materi Indonesia Indonesian Mining Journal
Azwar Manaf
Departemen FMIPA, Universitas Indonesia
Agriculture, Biological Sciences & Forestry Astronomy Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Earth & Planetary Sciences Education Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Physics

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Journal : Indonesian Physical Review

 1 
ECO FRIENDLY CITRIC ACID-ASSISTED SOL-GEL SYNTHESIS OF HIGH-PURITY NANO SILICA FROM DIENG GEOTHERMAL SLAG: CHARACTERIZATION AND OPTIMIZATION METHOD Birawidha, David C; Manaf, Azwar; Astuti, Widi; Daulay, Amru; Haryono, Tri; Sari, Yuliana; Suprihatin, Suprihatin
Indonesian Physical Review Vol. 8 No. 2 (2025)
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/ipr.v8i2.486

Abstract

Geothermal slag is a by-product of the geothermal power generation process, but its added value is minimal. With a silica content of up to 70%, geothermal slag has potential as a secondary silicon source for battery silicon anode precursors. Usually, the synthesis of nano-silica was carried out through the sol-gel method, in which HCl is usually used as a modifier to regulate the physical and chemical properties of the material. But in this study chose citric acid for modifier agent because it is more environmentally friendly. The challenge of using citric acid is the formation of carbon-based salts that can cause silica blackening if not washed well. Therefore, optimization was done by adjusting the pH to produce high-purity nano-silica. The sol-gel process was carried out by adding 10% NaOH and 5N Citric Acid, with varying pH base conditions from 8 to 11. XRF analysis results showed the highest purity at pH 8. Impurities were still visible based on XRD data, and the formation of nanoparticles was confirmed through morphological analysis using FESEM and TEM where the average particle size formed is between 55 nm.
Co-Authors Abdul Jami Adi Ganda Putra Agus Sukarto Agus Sukarto Ahmad Royani Akmal Johan Andreas Andreas Arbi Dimyati Arie Fiandimas Arieko Abdillah Asep Yudi Hercuadi Asep Yudi Hercuadi, Asep Yudi Bahfie, Fathan Bambang Soegijono Birawidha, David C Budhy Kurniawan Cahaya, Adam Badra Daulay, Amru Dedi Dedi Diah Susanti Djoko HP Doansi Tarihoran Dwita Suastiyanti Eddy Siradj Edie Sasito, Edie Eko Sulistiyono, Eko Elda Rayhana Elfrida Ratnawati Elisabeth A. S. Elsa Krisanti Erfan Handoko Erik Prasetyo Fajar Nurjaman Fajar Nurjaman Fathan Bahfie firdiyono, F Hafni Lissa Nuri Handoko, Djati Hasan Fahad Idris Novianto Iskandar Muda Iskandar Muda Iskandar Muda Lingga Hermanto Mabe Siahaan Manawan, Maykel Manawan, Maykel Marliyadi Pancoko Mas Ayu Elita Hafizah Maykel Manawan Mujamilah Mujamilah Mulyaningsih, Neng Nenden Musfirah Cahya Fajrah, Musfirah Cahya Nanang Sudrajat Nelson Saksono Nelson Saksono Novizal Novizal, Novizal Novrita Idayanti Nurul Taufiqu Rochman Nurul Taufiqu Rochman Pontas Sialagan Priyono K. Priyono P Priyono Priyono Rafael F Maniur Ridwan Ridwan Roekmijati Soemantojo Roekmijati Soemantojo, Roekmijati Roekmijati W. Roekmijati W. Soemantojo, Roekmijati W. Roekmijati Widaningroem Roekmijati Widaningroem, Roekmijati Roekmijati Widaningrum Roekmijati Widaningrum, Roekmijati Rudi Subagja Saptari, Sitti Ahmiatri Setijo Bismo Setijo Bismo Setyo Purwanto Setyo Purwanto Sialagan, Pontas Sipahutar, Wahyu Solafide Sri Mulyaningsih Sri Mulyaningsih Sukmara, Sony Suprihatin Suprihatin Taufik A. Bonaedy Tito Prastyo Rahman Tito Prastyo Rahman, Tito Prastyo Tri Haryono Ulin Herlina Valency, Tiara Wakid Ali Muntoha Widi Astuti Widi Astuti Wisnu A. Adi Wisnu Ari Adi Wisnu Ari Adi Wisnu Ari Adi Wisnu Ari Adi Yana Taryana Yuliana Sari Yuliusman Yuliusman Yuliusman Yuliusman Yuyu Wahyu