2023年4月10日 · Benefitting from the planar atomic arrangement of lamellar Nb 2 O 5, the frustrated Lewis pairs sites are highly exposed and accessible to reactants, which results in a superior methane...

2021年12月13日 · This review focus on the application of EPR in the observation of paramagnetic centers formed upon irradiation of titanium dioxide and niobium oxide photocatalysts. TiO2 and Nb2O5 are very well-known semiconductors that have been widely used for …

2024年6月5日 · In2O3/Nb2O5 S-scheme heterojunctions fabricated via a one-step electrospinning technique facilitate contact between two phases, fostering ultrafast interfacial electron transfer to prolong ...

结果表明，含氧缺陷的Nb2O5纳米片的CH4生成速率为19.14 μmol g-1 h-1，电子选择性高达94.1%。 这一调控提高了CH4生成的选择性，为有效地调整CO2光还原过程中的产物选择性提供了新的见解。 背景介绍. 如今，化石燃料的过度消耗导致大量二氧化碳（CO2）的释放，造成了全球变暖、酸雨、海平面上升等全球气候变化。 尽管有这些缺点，CO2仍然是在许多化学工业中应用的C1原料。 由于太阳能这一可再生能源，光催化CO2还原被认为是将CO2转化为增值化学品或 …

2021年12月13日 · 电子顺磁共振 (epr) 光谱是一种独特的分析工具，可用于监测固相和液相中发生的光致现象，并提供对不同实验条件下光催化剂的动力学和反应性的精确洞察。

2021年12月15日 · Oxygen vacancy and radical signals were tested by a Bruker EMX plus electron paramagnetic resonance (EPR) spectrometer. A JEOL JSM-7001F scanning electron microscopy (SEM) was used to characterize the morphology and element distribution.

2022年10月30日 · As can be seen in Fig. 2 c, Nb 2 O 5 exhibited a weak EPR signal with the g-factor value located at 2.0037, indicating a low concentration of native oxygen vacancy. However, the Nb 2 O 5-x showed a strong ESR signal, which was caused by the charge state of anion vacancies in Nb 2 O 5 after the H 2 /Ar annealing process [31] .

2021年12月5日 · Nb 2 O 5 with different states of oxygen vacancies (OVs) has been synthesized. Ce doped Nb 2 O 5 exhibits better photo-conversion of alcohols than Ti doped one under visible light. Ce dopant induces more available OVs than Ti …

2021年12月13日 · Electron paramagnetic resonance (EPR) spectroscopy is a unique analytical tool that can be employed to monitor the photoinduced phenomena occurring in the solid...

The overlooked role of reactive oxygen species (ROS), formed and stabilized on the surface of Nb2O5 after H2O2 treatment, was investigated in the adsorption and degradation of ciprofloxacin (CIP...