With regard to the second option, down-converting nanoparticles have been demonstrated to efficiently absorb UV light and re-emit visible light that can be harvested by the sensitizer in DSSCs49,50. Developing such routes to harvest all of the light of shorter wavelengths than 435 nm before it...
The UV-DRS spectra show that the DP-TiO2 nanoparticles did not absorb in the visible region between 400 and 800 nm, whereas DCTN exhibited an extended absorbance in the visible light region (Fig. 4h), which indicates that DCTN has better photocatalytic activity under direct sunlight42. In ...
Titanium dioxide particles hardly absorb visible light. However, TiO2particles do absorb UV radiation, for example from sunlight. Chemical reactions take place at the surface of a TiO2particle when UV light is absorbed. It is said that titanium dioxide is photoactive. ...
另外, 由图3(d)可知, P500的发射波长发生红移, 这跟UV-vis DRS光谱得出 的结论保持一致, 光吸收范围增加有利于光催化反应 活性提高[42]. 2.5 光催化氧化性能 甲醛作为一种常见的空气污染物, 极易挥发, 对人 体和环境造成极大的伤害[2]. 鉴于其极强的毒害作用, 本研究选择流动相的甲醛作为模拟污染物并...
另外, 由图3(d)可知, P500的发射波长发生红移, 这跟UV-vis DRS光谱得出 的结论保持一致, 光吸收范围增加有利于光催化反应 活性提高[42]. 2.5 光催化氧化性能 甲醛作为一种常见的空气污染物, 极易挥发, 对人 体和环境造成极大的伤害[2]. 鉴于其极强的毒害作用, 本研究选择流动相的甲醛作为模拟污染物并...
Furthermore, a closer band gap allows the photocatalyst to absorb UV light photons more efficiently, leading to a greater generation of electron-hole pairs compared to composite counterparts [4]. For example, TiO2 IO exhibited better degradation of Rh6G compared to pristine ZnO IO, while pristine...
In general, anatase to rutile phase transformation in the pure TiO2 usually occurs in the temperature range of 600–700 °C, but it can only absorb UV light owing to its large bandgap energy of ~ 3.2 eV. Till date, researchers and industrialists have been trying to synthesize TiO2 wit...
Due to the high bandgap, the solar energy absorption of TiO2 based devices is restricted to the UV region. It is necessary to expand its capacity to absorb solar radiation by different methods, such as dye absorption or structural modifications for a better energy conversion [10,11]. Sensitizat...
The UV–Vis diffuse absorbance and reflectance features obtained for TiO2, TiO2/Sb2S3, TiO2/Sb2S3/5%RGO and TiO2/Sb2S3/10%RGO hybrids are presented in Figs. 1c and S1 (in the electronic supplementary information (ESI)) respectively. While pure TiO2 can only absorb light with λ < 400 ...
light activity of TiO2 can be further enhanced by codoping of suitable combination of metals and/or nonmetal ions.405,418,419,428–431 Nanocomposites of TiO2 with semiconductors hav- ing lower band-gap energy such as CdS, CdSe, CdTe, PbS, Bi2S3, CuInS2, and so on, which absorb light ...