Sintesis Nanopartikel TiO2-SiO2 Berpori Sebagai Fotokatalis untuk Penjernihan Air Limbah Rumah Tangga

Authors

  • Mieke Wulandari Laboratorium Fisika Material, Jurusan Fisika, FMIPA, Universitas Andalas
  • Astuti Astuti Laboratorium Fisika Material, Jurusan Fisika, FMIPA, Universitas Andalas
  • Mulda Muldarisnur Laboratorium Fisika Material, Jurusan Fisika, FMIPA, Universitas Andalas

DOI:

https://doi.org/10.25077/jfu.7.1.33-38.2018

Abstract

Sintesis nanopartikel TiO2-SiO2 berpori dilakukan menggunakan metode pemanasan sederhana dalam larutan polimer. Polimer yang digunakan adalah polietilen glikol (PEG 6000). Sintesis dilakukan pada suhu 400 áµ’C dengan waktu tahan 0 jam, 0,5 jam, dan 1 jam. Hasil karakterisasi XRD dan SEM menunjukkan bahwa ukuran kristal adalah 53,1 nm, sedangkan rata-rata diameter partikel adalah 101,7 nm, 114,8 nm, dan 119,8 nm untuk waktu tahan 0 jam, 0,5 jam, dan 1 jam. Ukuran kristal tidak dipengaruhi oleh waktu tahan, sedangkan diameter partikel semakin besar dengan semakin lamanya waktu tahan. Penambahan SiO2 pada TiO2 menyebabkan partikel mengalami sedikit aglomerasi. Nanopartikel TiO2-SiO2 dapat menurunkan nilai pH air limbah rumah tangga dari 8,8 menjadi 7,5 dan menurunkan nilai TDS dari 208 mg/L menjadi 161 mg/L. Penurunan nilai pH dan TDS lebih tinggi diperoleh untuk nanopartikel TiO2-SiO2 dengan waktu tahan 0 jam yang memiliki ukuran kristal paling kecil. Nanopartikel TiO2-SiO2 lebih efisien menurunkan nilai pH dan TDS air limbah rumah tangga dibandingkan TiO2 tanpa silika.

Kata kunci : TiO2-SiO2, TDS, fotokatalis, PEG 6000, air limbah rumah tangga

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Published

2018-01-03

Issue

Vol. 7 No. 1 (2018)

Section

Articles

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Copyright (c) 2018 Mieke Wulandari, Astuti Astuti, Mulda Muldarisnur

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