In the present investigation, photocatalytic conversion of xylose by Copper (Cu) doped Zinc oxide (ZnO) was investigated under Ultraviolet Light emitting diode (UVA-LED) illumination. Photocatalysts were synthesized successfully by chemical precipitation method. The synergistic effect of 5 wt% Cu doped ZnO and addition of glycerol as oxygen scavenger improved conversion. The results from our study showed that %conversion of xylose, glycerol are 33.72%, 33.61% respectively and % product yield of 88.79% of Dihydroxyacetone(DHA), 19.87% of xylitol and 13.29% of erythritol were achieved when 1.66 g/L of catalyst were used in ambient conditions under 7 h of UVA-LED illumination. The varied temperature to 50 ± 2 °C had decreased effect on the product yield when compared to that of the reaction carried out at 30 ± 2 °C. High Resolution Mass spectrometry results confirmed the presence of the products xylitol, erythritol and DHA formed during the course of the photocatalytic reaction.

中文翻译：

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铜掺杂氧化锌光催化木糖转化为木糖醇

在本研究中，在紫外发光二极管 (UVA-LED) 照明下研究了铜 (Cu) 掺杂的氧化锌 (ZnO) 对木糖的光催化转化。采用化学沉淀法成功合成了光催化剂。5 wt% Cu 掺杂的 ZnO 和添加甘油作为除氧剂的协同作用提高了转化率。我们的研究结果表明，当 1.66 g/L 的二羟基丙酮 (DHA)、19.87% 的木糖醇和 13.29% 的赤藓糖醇时，木糖、甘油的转化率分别为 33.72%、33.61% 和 88.79% 的产物收率。催化剂在 7 小时的 UVA-LED 照明下在环境条件下使用。与在 30 ± 2 °C 下进行的反应相比，将温度变化至 50 ± 2 °C 对产物产率的影响降低。