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首页> 外文期刊>Catalysis science & technology >Titania supported MOF-199 derived Cu-Cu2O nanoparticles: highly efficient non-noble metal photocatalysts for hydrogen production from alcohol-water mixtures
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Titania supported MOF-199 derived Cu-Cu2O nanoparticles: highly efficient non-noble metal photocatalysts for hydrogen production from alcohol-water mixtures

机译：二氧化钛支持财政部- 199 Cu-Cu2O派生而来纳米粒子:高效的非贵金属对制氢的催化剂alcohol-water混合物

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摘要

Fabrication of cheap and efficient photocatalysts is pivotal for practical applications of solar energy devices. Here, we illustrate a novel trend in generating Cu-Cu2O nanoparticles over TiO2 for water splitting systems. Titanium.IV) isopropoxide was hydrolysed in the presence of various wt% of MOF-199 ([Cu-3(BTC)(2)(H2O)(3)](n)) to obtain TiO2 -MOF-199 composite materials. These composite materials are then calcined at various temperatures in air to produce highly dispersed Cu-Cu2O nanoparticles over TiO2; these nanoparticles were tested as photocatalyts for hydrogen generation from alcohol-water mixtures. The photocatalyst 1 wt% Cu/TiO2-400 was found to exhibit a hydrogen production rate some 2.5 times higher than that of CuO prepared by conventional precipitation methods. The calcination temperature of the TiO2-MOF composite was found to affect the oxidation state of Cu and the photocatalytic activity, with an optimum performance achieved at 400 degrees C. Calcination beyond this temperature led to oxidation and agglomeration of Cu-Cu2O nanoparticles into larger CuO deposits, which reduce the H-2 production activity (ca. 80%).
机译：制造的廉价、高效的催化剂关键的是实际应用的太阳能吗能源设备。在生成Cu-Cu2O纳米颗粒二氧化钛水分离系统。异丙醇盐的水解各种wt %的财政部- 199([Cu-3 (BTC) (2) (H2O) (3)] (n))获得二氧化钛财政部- 199复合材料。材料然后在不同煅烧温度在空气中产生高度分散Cu-Cu2O纳米二氧化钛;纳米粒子作为photocatalyts得以验证根据alcohol-water混合物生成氢气。光催化剂1 wt %铜/二氧化钛- 400被发现展示一个氢产量的2.5倍高于措由传统沉淀的方法。温度TiO2-MOF复合被发现影响铜的氧化态和光催化活性,最佳性能达到400摄氏度。煅烧超过这个温度了氧化和Cu-Cu2O集聚纳米颗粒进入大措存款,减少2生产活动(ca。80%)。

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