MXP(M = Co/Ni)@carbon core–shell nanoparticles embedded in 3D cross-linked graphene aerogel derived from seaweed biomass for hydrogen evolution reaction

Nanoscale ◽  
2018 ◽  
Vol 10 (20) ◽  
pp. 9698-9706 ◽  
Author(s):  
Wentong Zhao ◽  
Xiaoqing Lu ◽  
Manickam Selvaraj ◽  
Wei Wei ◽  
Zhifeng Jiang ◽  
...  
Keyword(s):  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Low Cost ◽  
Core Shell ◽  
Graphene Aerogel ◽  
Shell Nanoparticles ◽  
Seaweed Biomass ◽  
Carbon Core ◽  
Core Shell Nanoparticles

Low-cost electrocatalysts play an important role in the hydrogen evolution reaction (HER).

Engineering an effective noble-metal-free photocatalyst for hydrogen evolution: hollow hexagonal porous micro-rods assembled from In2O3@carbon core–shell nanoparticles

2018 ◽  
Vol 6 (32) ◽  
pp. 15747-15754 ◽  
Author(s):  
Rong Li ◽  
Liming Sun ◽  
Wenwen Zhan ◽  
Yan-An Li ◽  
Xiaojun Wang ◽  
...  
Keyword(s):  
Hydrogen Evolution ◽  
Noble Metal ◽  
Core Shell ◽  
Shell Nanoparticles ◽  
Metal Free ◽  
Carbon Core ◽  
Core Shell Nanoparticles

It is desirable but challenging to design noble-metal-free photocatalysts with improved activity for hydrogen (H2) evolution.

scholarly journals Bimetallic Core–Shell Nanoparticles of Gold and Silver via Bioinspired Polydopamine Layer as Surface-Enhanced Raman Spectroscopy (SERS) Platform

Nanomaterials ◽  
2020 ◽  
Vol 10 (4) ◽  
pp. 688 ◽  
Author(s):  
Asli Yilmaz ◽  
Mehmet Yilmaz
Keyword(s):  
Raman Spectroscopy ◽  
Low Cost ◽  
Silver Ions ◽  
Surface Enhanced Raman Spectroscopy ◽  
Core Shell ◽  
Silver Deposition ◽  
Shell Nanoparticles ◽  
Surface Enhanced ◽  
Surface Enhanced Raman ◽  
Core Shell Nanoparticles

Despite numerous attempts to fabricate the core–shell nanoparticles, novel, simple, and low-cost approaches are still required to produce these efficient nanosystems. In this study, we propose the synthesis of bimetallic core–shell nanoparticles of gold (AuNP) and silver (AgNP) nanostructures via a bioinspired polydopamine (PDOP) layer and their employment as a surface-enhanced Raman spectroscopy (SERS) platform. Herein, the PDOP layer was used as an interface between nanostructures as well as stabilizing and reducing agents for the deposition of silver ions onto the AuNPs. UV-vis absorption spectra and electron microscope images confirmed the deposition of the silver ions and the formation of core–shell nanoparticles. SERS activity tests indicated that both the PDOP thickness and silver deposition time are the dominant parameters that determine the SERS performances of the proposed core–shell system. In comparison to bare AuNPs, more than three times higher SERS signal intensity was obtained with an enhancement factor of 3.5 × 105.

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