The rational design of Cu2−xSe@(Co,Cu)Se2 core–shell structures as bifunctional electrocatalysts for neutral-pH overall water splitting

Nanoscale ◽  
2021 ◽  
Author(s):  
Li Liu ◽  
Xiao Yang ◽  
Yuanqing Zhao ◽  
Bingbing Yao ◽  
Yanhua Hou ◽  
...  

Herein, we designed a Cu2−xSe@(Co,Cu)Se2 core–shell structure with ultrathin (Co,Cu)Se2 nanosheets anchored as a shell on an internal Cu2−xSe core as an effective bifunctional catalyst under neutral-pH conditions.

2009 ◽  
Vol 113 (23) ◽  
pp. 10151-10157 ◽  
Author(s):  
Masaaki Yoshida ◽  
Kazuhiro Takanabe ◽  
Kazuhiko Maeda ◽  
Akio Ishikawa ◽  
Jun Kubota ◽  
...  

2021 ◽  
Author(s):  
Esteban Gioria ◽  
Liseth Johana Duarte Correa ◽  
Najmeh Bashiri ◽  
Walid Hetaba ◽  
Reinhard Schomäcker ◽  
...  

A facile and rational approach to synthesize bimetallic heterogeneous tandem catalysts is presented. Using core-shell structures, it is possible to create spatially controlled ensembles of different nanoparticles and investigate coupled...


Nanomaterials ◽  
2021 ◽  
Vol 11 (4) ◽  
pp. 867
Author(s):  
Lin Guo ◽  
Zhu Mao ◽  
Sila Jin ◽  
Lin Zhu ◽  
Junqi Zhao ◽  
...  

Surface-enhanced Raman scattering (SERS) is a powerful tool in charge transfer (CT) process research. By analyzing the relative intensity of the characteristic bands in the bridging molecules, one can obtain detailed information about the CT between two materials. Herein, we synthesized a series of Au nanorods (NRs) with different length-to-diameter ratios (L/Ds) and used these Au NRs to prepare a series of core–shell structures with the same Cu2O thicknesses to form Au NR–4-mercaptobenzoic acid (MBA)@Cu2O core–shell structures. Surface plasmon resonance (SPR) absorption bands were adjusted by tuning the L/Ds of Au NR cores in these assemblies. SERS spectra of the core-shell structure were obtained under 633 and 785 nm laser excitations, and on the basis of the differences in the relative band strengths of these SERS spectra detected with the as-synthesized assemblies, we calculated the CT degree of the core–shell structure. We explored whether the Cu2O conduction band and valence band position and the SPR absorption band position together affect the CT process in the core–shell structure. In this work, we found that the specific surface area of the Au NRs could influence the CT process in Au NR–MBA@Cu2O core–shell structures, which has rarely been discussed before.


RSC Advances ◽  
2017 ◽  
Vol 7 (84) ◽  
pp. 53509-53515 ◽  
Author(s):  
Tao Li ◽  
ZhiChao Wang ◽  
YunRui Duan ◽  
Jie Li ◽  
Hui Li

An abnormal self-organized core/shell structure is formed in the liquid Al–Pb alloy, which can be controlled by confined conditions.


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