High-yield exfoliation of MoS2 (WS2) monolayers towards efficient photocatalytic hydrogen evolution
High-yield exfoliation of MoS2 (WS2) monolayers towards efficient photocatalytic hydrogen evolution
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MoS2（WS2）单层的高产率剥离可实现高效光催化析氢
DOI：
10.1016/j.cej.2021.133286
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发表时间：
2021-11
影响因子：
15.1
通讯作者：
Xiaobin Fan
中科院分区：
文献类型：
--
作者：
Jiapeng Liu;Huibin Liu;Xiaobin Fan;Yang Li;Fengbao Zhang;Xiaobin Fan
部分刻蚀可以提高MoS 2（WS 2）的边缘分数。·采用液相剥离法制备了高收率的MoS 2（WS 2）单分子膜。·半导体2 H相保留在MoS 2（WS 2）单分子膜中。剥离的MoS 2（WS 2）单分子膜表现出上级的助催化性能。单层MoS 2（WS 2）纳米片由于其独特的性质引起了人们极大的兴趣，但高产率制备单层MoS 2（WS 2）仍然是一个巨大的挑战和极大的兴趣。在此，我们报道了一种简单有效的部分刻蚀策略，通过调整MoS 2（WS 2）的厚度和横向尺寸来增加边缘的比例，从而显著提高了液相剥离法制备单层MoS 2（20%）和WS 2（12%）纳米片的产率。作为一个概念的证明，剥离的单层二硫化钼（WS 2）纳米片作为光催化析氢的助催化剂。优化后的杂化材料具有优异的析氢性能，其析氢性能分别是CdS的31倍（MoS 2 /CdS）和47倍（WS 2 /CdS）.因此，本工作不仅为液相剥离法制备高收率的过渡金属双硫族化合物单层膜开辟了新的途径，而且为进一步高效剥离其他二维层状材料提供了可能。
• The fraction of edges of MoS 2 (WS 2 ) can be increased by partial etching strategy. • High-yield MoS 2 (WS 2 ) monolayers were obtained by liquid phase exfoliation. • The semiconducting 2H phase was retained in the MoS 2 (WS 2 ) monolayers. • Exfoliated MoS 2 (WS 2 ) monolayers exhibited superior cocatalytic performance. Monolayer MoS 2 (WS 2 ) nanosheets have triggered tremendous interest due to their fascinating unique properties, but high-yield production of single-layer MoS 2 (WS 2 ) still remains an enormous challenge and of great interest. Herein, we report a facile efficient partial etching strategy to tailor thickness and lateral size of MoS 2 (WS 2 ) so as to increase the fraction of edges, which remarkably enhanced the yield of monolayer MoS 2 (20%) and WS 2 (12%) nanosheets by liquid phase exfoliation. As a proof of concept, the exfoliated monolayer MoS 2 (WS 2 ) nanosheets were applied as the cocatalysts for photocatalytic hydrogen evolution. Notably, the optimized hybrids exhibit excellent hydrogen evolution performance, which are over 31-fold (MoS 2 /CdS) and 47-fold (WS 2 /CdS) higher that of bare CdS counterpart, respectively. Hence, this work not only may pave the new way for the high-yield production of transition-metal dichalcogenides monolayers by liquid phase exfoliation, but also provide the possibility for the further efficiently exfoliating other two-dimension layered materials.
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影响因子：
--
作者：
Kai-Ge Zhou;Nan-nan Mao;Hang-Xing Wang;Yong Peng;Hao‐Li Zhang
通讯作者：
Kai-Ge Zhou;Nan-nan Mao;Hang-Xing Wang;Yong Peng;Hao‐Li Zhang
有序双连续介孔高分子半导体光催化剂
影响因子：
17.1
作者：
Li, Qian;Chen, Chuanshuang;Mai, Yiyong
通讯作者：
Mai, Yiyong
影响因子：
17.1
作者：
Che, Ali Jawaid Justin;Drummy, Lawrence F.;Vaia, Richard A.
通讯作者：
Vaia, Richard A.
影响因子：
15
作者：
Li, Guoqing;Zhang, Du;Cao, Linyou
通讯作者：
Cao, Linyou
影响因子：
8.6
作者：
Jawaid, Ali;Nepal, Dhriti;Vaia, Richard A.
通讯作者：
Vaia, Richard A.