Effects of Crystallinity and Particle Size on Photocatalytic Performance of ZrTiO4 Nanostructured Powders

The crystallinity, surface morphology, optical property and photocatalytic performance of ZrTiO 4 nanostructured powders synthesized by sol-gel method at various calcining temperatures were investigated by XRD, FE-SEM, and absorption measurements, respectively. XRD analysis showed that ZrTiO4began crystallizing at about 600 °C. The crystallinity increased with increasing calcining temperature. According to FE-SEM images, amorphous particles of nearly 10 nm in size with relatively sphere morphology were formed after a heat treatment of the ZrTiO 4gel at 450 °C for 3 hours. The crystalline particle size increased gradually to 20, 50, and 100 nm when the calcining temperature increased to 800, 900, and 1000 °C, respectively. The UV-Vis absorption spectra indicated a slight broadening ofoptical band gap with increasing calcining temperature. Photodegradation performance of Rhodamine B (RhB) in aqueous solution via ZrTiO 4nanopowders which occurred under the illumination of a Xenon lamp have showed that the ZrTiO 4sample treated at 800 °C exhibited the largest efficiency of the photocatalytic performance.

Dữ liệu và nguồn dữ liệu

Thông tin khác

Miền Giá trị
Nguồn dữ liệu repository.vnu.edu.vn
Cơ quan cung cấp Le Thi Mai Oanh, Dang Thu Ha, Man Minh Hue, Lam Thi Hang, Dao Viet Thang, Nguyen Manh Hung, Doan Thuy Phuong, Nguyen Van Minh
Người cập nhật Đại học Quốc gia Hà Nội
Cập nhật lần cuối Tháng 6 2, 2020, 17:48 (ICT)
Ngày tạo Tháng 4 7, 2020, 13:34 (ICT)
Bộ mã utf8
Nguồn dữ liệu liên kết https://dulieu.itrithuc.vn/dataset/46636122-9a2e-47f7-b192-d19aae2cbd47