Highly efficient visible light-induced O₂ generation by self-assembled nanohybrids of inorganic nanosheets and polyoxometalate nanoclusters.
Highly efficient visible light-induced O₂ generation by self-assembled nanohybrids of inorganic nanosheets and polyoxometalate nanoclusters.
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DOI：
10.1038/srep02080
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发表时间：
2013
影响因子：
4.6
通讯作者：
Hwang, Seong-Ju
中科院分区：
文献类型：
--
作者：
Gunjakar, Jayavant L.;Kim, Tae Woo;Kim, In Young;Lee, Jang Mee;Hwang, Seong-Ju
剥离的Zn-Cr-LDH 2D纳米薄片与POM 0D纳米团簇(W7O246−和V10O286−)作为电子受体，通过静电自组装可以获得高的可见光诱导产生O2的光催化活性。这种自组装可以提供高度的灵活性来控制所得到的基于LDH的纳米杂化材料的化学成分和孔结构。与POM纳米团簇的杂化显著提高了纯锌-铬-乳酸脱氢酶的光催化活性，这归因于多孔结构的形成和电荷复合的抑制。值得注意的是，所制备的Zn-Cr-LDH-POM纳米杂化材料对可见光诱导产生O2的优异光催化活性可以通过200°C的焙烧进一步提高，从而在420 nm处获得非常高的表观量子产率75.2%。研究结果表明，LDH-POM的自组装在合成新型LDH基多孔纳米杂化光催化剂方面具有较强的应用前景。
Unusually high photocatalytic activity of visible light-induced O2 generation can be achieved by electrostatically-derived self-assembly between exfoliated Zn-Cr-LDH 2D nanosheets and POM 0D nanoclusters (W7O246− and V10O286−) acting as an electron acceptor. This self-assembly can provide a high flexibility in the control of the chemical composition and pore structure of the resulting LDH-based nanohybrids. The hybridization with POM nanoclusters remarkably enhances the photocatalytic activity of the pristine Zn-Cr-LDH, which is attributable to the formation of porous structure and depression of charge recombination. Of prime interest is that the excellent photocatalytic activity of the as-prepared Zn-Cr-LDH-POM nanohybrid for visible light-induced O2 generation can be further enhanced by calcination at 200 °C, leading to the very high apparent quantum yield of ∼75.2% at 420 nm. The present findings clearly demonstrate that the self-assembly of LDH–POM is fairly powerful in synthesizing novel LDH-based porous nanohybrid photocatalyst for visible light-induced O2 generation.
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影响因子：
19
作者：
Kim, Hyo Na;Kim, Tae Woo;Hwang, Seong-Ju
通讯作者：
Hwang, Seong-Ju
影响因子：
15
作者：
Gunjakar, Jayavant L.;Kim, Tae Woo;Hwang, Seong-Ju
通讯作者：
Hwang, Seong-Ju
影响因子：
29.4
作者：
Kim, Tae Woo;Hwang, Seong-Ju;Choy, Jin-Ho
通讯作者：
Choy, Jin-Ho
影响因子：
--
作者：
Kim, Tae Woo;Ha, Hyung-Wook;Hwang, Seong-Ju
通讯作者：
Hwang, Seong-Ju
影响因子：
3.7
作者：
Kim, Tae Woo;Hwang, Seong-Ju;Choy, Jin-Ho
通讯作者：
Choy, Jin-Ho