孙琼
+
其他联系方式
暂无内容
论文成果
Effect of contact interface between TiO<inf>2</inf>and g-C<inf>3</inf>N<inf>4</inf>on the photoreactivity of g-C<inf>3</inf>N<inf>4</inf>/TiO<inf>2</inf>photocatalyst: (001) vs (101) facets of TiO<inf>2</inf>
- 发布时间：2023-10-19
- 点击次数：
- 关键字：Titanium dioxide;Electrons - Fourier transform infrared spectroscopy - Image enhancement - Irradiation - Photocatalysis - Photocatalysts - Photodegradation - Photoreactivity - Scanning electron microscopy - Spectrometers - Transmission electron microscopy - X ray diffraction;Diffuse reflectance spectroscopy - Fourier transform infra red (FTIR) spectroscopy - G-C3N4 - High-energy TiO2 - Photo catalytic degradation - Photocatalytic activities - Photogenerated electrons - X ray photoelectron spectrometers
- 摘要：In this paper, effect of contact interfaces of high-energy TiO<inf>2</inf>, (101) and (001) facets, with g-C<inf>3</inf>N<inf>4</inf>on the photocatalytic activity of g-C<inf>3</inf>N<inf>4</inf>/TiO<inf>2</inf>hybrid was studied using TiO<inf>2</inf>hollow nanobox (TiO<inf>2</inf>-HNB) assembly from high-energy TiO<inf>2</inf>nanosheets (TiO<inf>2</inf>-NS) as model. The prepared photocatalyst was characterized by X-ray diffraction (XRD), transmission electron microscope (TEM), scanning electron microscopy (SEM), nitrogen sorption, Fourier transform infrared spectroscopy (FT-IR), diffuse reflectance spectroscopy (DRS) and X-ray photoelectron spectrometer (XPS). The photoreactivity of the photocatalyst was evaluated by measure the formation rate of photo-induced hydroxyl radicals (OH) using coumarin as a probe molecule and photocatalytic degradation of Brilliant Red X3B (an anionic dye) under UV irradiation (λ=365±10nm). It was found that g-C<inf>3</inf>N<inf>4</inf>/TiO<inf>2</inf>-HNB forms direct Z-scheme photocatalytic system, which shows superior enhancement on the photocatalytic activity of TiO<inf>2</inf>than g-C<inf>3</inf>N<inf>4</inf>/TiO<inf>2</inf>-NS. It is by contacting g-C<inf>3</inf>N<inf>4</inf>with (101) facets, g-C<inf>3</inf>N<inf>4</inf>can efficient remove the photo-generated electrons accumulated on (101) facets of high-energy TiO<inf>2</inf>, which results in spatially isolated photo-generated electrons and holes, enhancing the photocatalytic activity.<br/> © 2014 Elsevier B.V.
- 卷号：164
- 期号：期
- 是否译文：否