We report the well-designed active {1 1 0} and {1 1 1} faceted Cu2O hollow nanospheres (Cu2O-HNs) for the quick removal of the high concentration pollutants in water. For the first time, these Cu2O-HNs combine the advantages of the active facets, hollow structure and nanostructures. The abundance of dangling Cu atoms in two active facets results in positively charged surface to effectively react with the negatively charged pollutants. The hollow structure provides the opportunity to take full use of these active sites. Consequently, the active faceted Cu2O-HNs demonstrate excellent adsorption and photodegradation capacities for high concentrated anionic dyes. The smallest Cu2O-HNs (~100 nm) can adsorb ~90% of methyl blue (MB) (100 mg L-1) in 10 min and degrade ~92% of MB (100 mg L-1) in 10 min under visible-light. In particular, a film consisting of the smallest Cu2O-HNs can quickly remove high concentrated organic dyes and be reused after solar light irradiation for 10 min in air, showing the promising practical application for the removal of organic pollutants.

中文翻译：

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活性多面Cu2O空心纳米球可实现前所未有的吸附和可见光降解污染物。

我们报告了精心设计的活性{1 1 0}和{1 1 1}刻面Cu2O空心纳米球（Cu2O-HNs），用于快速去除水中的高浓度污染物。这些Cu2O-HN首次结合了活性小面，中空结构和纳米结构的优点。两个活动面中大量的悬空的Cu原子会导致带正电的表面有效地与带负电的污染物发生反应。中空结构提供了充分利用这些活性部位的机会。因此，活性多面Cu2O-HNs对高浓度阴离子染料表现出出色的吸附和光降解能力。最小的Cu2O-HNs（〜100 nm）在可见光下可在10分钟内吸附约90％的甲基蓝（MB）（100 mg L-1），并在10分钟内降解约92％的MB（100 mg L-1）。 -光。特别是，