Rapid microwave-assisted synthesis of molybdenum trioxide nanoparticles

• Tác giả: Van Thang Thang Le, Anh Tien Nguyen, Thi Minh Nguyet Nguyen, Vinh Dat Vuong
• Ngôn ngữ: vie
• Thông tin xuất bản: Tạp chí Khoa học Trường Đại học Sư phạm Thành phố Hồ Chí Minh , 2019
• Bộ sưu tập: Metadata
• ID: 390593

Tóm tắt

In this paper, molybdenum trioxide (MoO3) nanoparticles were synthesized by rapid-microwave method using ammonium heptamolybdate (AHM) as a precursor in ethylene glycol (EG) solution with concentrated HNO3. This reaction was carried out in a short period of 30 min and the nanoparticles were then heat treated at 600°C. The structures of the products wereanalyzed by X-ray diffraction (XRD). Scanning electron microscopy (SEM) and transmission electron microscopy (TEM) were used to record the morphology and nanoparticle size of MoO3. The Raman spectrum of MoO3displays three well-defined peaks located at 989.2, 816.0 and 665.3 cm-1which are the fingerprints of the orthorhombic α-MoO3crystalline phase.