Abstract The design of the photocatalytic materials has made a great of remarkable progress in the area of the enhancement photocatalytic activity, but there are still lots of problems such as wide band gap, low utilization of sunlight, low quantum efficiency and poor stability, which further limit the extensive practical applications. Thus, it is a hot research topic and key scientific problem to be solved that how to design and prepare the catalysts, which can respond to visible and near-infrared light in sunlight. Inspired by efficient nonlinear optical upconversion materials, upconversion-based nanocomposites can indirectly broaden the absorption ranges of semiconductors by converting the captured long-band visible and near-infrared incident light into high-energy short-band visible or ultraviolet light, which can be adopted as the promising candidate in wide-spectral-light-activating photocatalytic materials coupling with conventional semiconductors. According to our recent works and literature reports, recent review summarizes the research progress of photocatalytic materials with upconversion effect on photolysis of water for hydrogen production, degradation of organic and inorganic pollutants, reduction of CO2 and photodynamic therapy. The prepared nanocomposites can suppress the recombination of electrons and holes, and greatly improve the photocatalytic efficiency by the synergistic effect. It maybe stimulates a great interest in rational design and preparation of efficient full-spectrum photocatalytic systems and their wide application in solar energy conversion.

中文翻译：

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高附加值荧光上转换剂辅助纳米半导体高效宽光谱响应光催化：发挥能量转移效应及应用

摘要 光催化材料的设计在提高光催化活性方面取得了很大的进步，但仍存在禁带宽度大、太阳光利用率低、量子效率低、稳定性差等问题，进一步加剧了光催化材料的发展。限制了广泛的实际应用。因此，如何设计和制备能够响应太阳光中可见光和近红外光的催化剂是一个研究热点和亟待解决的关键科学问题。受高效非线性光学上转换材料的启发，基于上转换的纳米复合材料可以通过将捕获的长波段可见光和近红外入射光转换为高能短波段可见光或紫外光，间接拓宽半导体的吸收范围，可作为与传统半导体耦合的广谱光活化光催化材料的有希望的候选者。根据我们近期的工作和文献报道，近期综述总结了具有上转换作用的光催化材料在光解水制氢、降解有机和无机污染物、减少CO2和光动力治疗方面的研究进展。制备的纳米复合材料可以抑制电子和空穴的复合，并通过协同效应大大提高光催化效率。它可能激发了人们对高效全光谱光催化体系的合理设计和制备及其在太阳能转换中的广泛应用的极大兴趣。