Hierarchical Porous Batio3 Nano-Hexagons as A Visible Light Photocatalyst

Abstract

Hierarchical porous BaTiO 3 nano-hexagons was synthesized via a simple hydrothermal route by using TiO 2 and Ba(OH) 2 .8H 2 O as starting materials under alkaline environment and its photocatalytic activity was evaluated under visible light by taking methylene blue (MB) as a model pollutant. The prepared BaTiO 3 was characterized by powder X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), field emission scanning electron microscopy (FESEM), energy dispersive X-rays analysis (EDX), high resolution transmission electron microscopy (HRTEM), Brunauer-Emmett-Teller (BET) analysis and diffused reflectance spectroscopy (DRS) techniques. It is noteworthy that the BaTiO 3 nano-hexagons exhibited significant photocatalytic activity towards the degradation of MB under visible light irradiation. This significant photocatalytic activity of BaTiO 3 under visible light is mainly attributed to the special morphology and formation of Ti 3+ defects.

Durable Thermoregulating, Antibacterial, and UV Protective Smart Cotton Embedded with Polyethylene Glycol and BaTiO3

“…The characterization of the BT particles and pure cotton fabric utilized for coating is shown in Figure . In the XRD of BT particles, peaks at 22.06, 31.43, 38.75, 45.05, 50.77, 56.03, 65.68, 70.28, 74.67, and 79.06° are assigned to (100), (110), (111), (200), (210), (211), (220), (300), (310), and (311) crystallographic planes of tetragonal BT . The FE-SEM of used particles (Figure b) revealed nanocrystalline BT.…”

“…The characterization of the BT particles and pure cotton fabric utilized for coating is shown in Figure 1 200), ( 210), ( 211), ( 220), (300), (310), and (311) crystallographic planes of tetragonal BT. 29 The FE-SEM of used particles (Figure 1b) revealed nanocrystalline BT. The UV absorption spectrum of BT-NPs was measured at wavelengths ranging from 200 to 800 nm.…”

Photocatalytic degradation of methylene blue from an aqueous solution using SnO₂/BaTiO₃ heterostructure

“…Trong đó, BaTiO3 là một trong những vật liệu đầy hứa hẹn cho các ứng dụng xúc tác quang. BaTiO3 là một chất bán dẫn chỉ thể hiện hoạt tính xúc tác quang mạnh trong vùng UV và hoạt tính giảm nhanh do tốc độ tái kết hợp giữa electron quang sinh và lỗ trống quang sinh mạnh [2]. Tin (IV) oxide (SnO2) là chất bán dẫn loại n với năng lượng vùng cấm rộng (3,6 eV) [3], chủ yếu hấp thụ mạnh ánh sáng vùng tử ngoại.…”