Preparasi Dan Karakterisasi Nanosilika Dari Jerami Padi

Abstract

PREPARASI DAN KARAKTERISASI NANOSILIKA DARI JERAMI PADIABSTRAKPenelitian ini dilakukan untuk mengetahui karakteristik silika yang diekstraksi dari jerami padi yang diperoleh dari wilayah usaha tani padi Pekalongan. Silika diperoleh dengan metode sol-gel, yang melibatkan ekstraksi silika dengan larutan alkali dan gelasi silika menggunakan larutan asam. Ditemukan bahwa hasil tertinggi diperoleh dari ekstraksi menggunakan larutan KOH 5% dengan waktu ekstraksi 60 menit, dan pH gelasi 7.0. Persiapan berhasil diproduksi dengan memanaskan jerami padi pada suhu 10 °C/menit dan menahannya pada suhu 500°C untuk memudahkan penguraian dan pengadopsian bahan organik sambil menghindari pengapian otomatis. Komposisi kimia SiO2 diperkuat oleh EDS dan FTIR dan sifat amorf oleh XRD.Serbuk nanosilika dengan ukuran pori rata – rata 45,3869 nm dan memiliki permukaan spesifik (94,761 m2/g).Kata kunci: Jerami padi; Nanopartikel silika, Sol gel PREPAPARATION AND CHARACTERIZATION NANOSILICAFROM RICE STAWABSTRACTThis study was carried out to investigate the characteristics of silica extracted from rice straw obtained from rice farming region of Pekalongan. The silica was obtained using sol-gel method, which involves extraction of silica using alkalis solution and gelation of the silica using acid solution. It was found that the highest yield was obtained from the extraction using 5% KOH solution with the extraction time of 60 minutes, and gelation pH of 7.0. Preparation was successfully produced by heating rice straw at 10 °C/min and holding at 500°C to facilitate decomposition and gasification of the organics while avoiding auto-ignition. The SiO2 chemical composition was confirmed by EDS and FTIR and the amorphous nature by XRD. Nanosilica powders with a 45,3869 nm average pore size and have specific surface (94,761 m2/g).Keywords: Rice straw; Silica nanoparticles, Sol gel

Analisis Kandungan Mineral Pasir Pantai Bajul Mati Kabupaten Malang Menggunakan XRF dan XRD

“…Bahan mineral oksida seperti ZnO, SiO2, MgO, Al2O3, TiO2 berpotensi untuk nanoteknologi sehingga diperlukan usaha untuk memaksimalkan penggunaan bahan tersebut. Hasil nanoteknologi dapat berupa nanomaterial, salah satunya adalah sintesis nanosilika dalam jumlah besar untuk dimanfaatkan di bidang elektronika kimia, elektronika, kesehatan, dan bioteknologi [2]. Diketahui, silika banyak terkandung dalam pasir pantai sebanyak >50% wt [3].…”

SYNTHESIS AND CHARACTERIZATION OF NANOSILICA (SiO2) VOLCANIC ROCK OF MOUNT BATUR IN BALI

“…Therefore, this provides opportunities for the development of new research related to advanced materials that meet the demands of high-tech applications. The rapid development of various applications of nanomaterials in several fields has been observed in recent years [2]. Among several applications, nanosilica is a widely used nanomaterial with applications in adhesive polymers, optical fiber strands, inks, paints, coatings, cosmetics, food additives, and cement-based building materials [3].…”

“…The resulting silica products are generally classified based on their properties including nanosilica, fumed silica, precipitated silica, colloidal silica, and silica gel [4]. Nanosilica applications ultimately depend on surface chemistry, molecular structure, morphology, and porosity [2]. Therefore, modification of silica nanoparticles to improve surface chemical and physical properties is the key to successful application of the material.…”