Controlled synthesis of magnetic iron oxides@SnO2 quasi-hollow core–shell heterostructures: formation mechanism, and enhanced photocatalytic activity

Nanoscale ◽  
2011 ◽  
Vol 3 (11) ◽  
pp. 4676 ◽  
Author(s):  
Wei Wu ◽  
Shaofeng Zhang ◽  
Feng Ren ◽  
Xiangheng Xiao ◽  
Juan Zhou ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Iron Oxides ◽  
Formation Mechanism ◽  
Core Shell ◽  
Controlled Synthesis ◽  
Hollow Core

Synthesis and Characterization of Hollow Core-Shell ZrO2@void@BiVO4 Visible-Light Photocatalyst

2010 ◽  
Vol 148-149 ◽  
pp. 1331-1338
Author(s):  
Bing Hua Yao ◽  
Liu Min ◽  
Zhan Ying Ma ◽  
Cheng Wang
Keyword(s):  
Photocatalytic Activity ◽  
Gas Phase ◽  
Carbon Layer ◽  
Synthesis And Characterization ◽  
Core Shell ◽  
Hollow Core ◽  
Void Space ◽  
Visible Light Photocatalyst ◽  
Pure Phase

Monoclinic scheelite BiVO4 was synthesized from a mixture of aqueous Bi(NO3)3 and NH4VO3 solutions by hydrothermal method. Then using successive coating of BiVO4 with a carbon layer and a ZrO2 layer followed by heat treatment to remove the carbon layer prepared a core-shell(ZrO2@void@BiVO4) nanoparticles with a void layer between the BiVO4 core and the ZrO2 shell. TG-DTA and IR suggest that BiVO4 was coated with ZrO2. TEM shows that there was a void space between the BiVO4 core and the ZrO2 shell. The samples were characterized by XRD and the peaks of ZrO2@void@BiVO4 suits well with the pure phase monoclinic scheelite BiVO4. And its visble-light photocatalytic activity was evaluated by the photodegradation of methylene blue(MB). The results indicated that the photocatalytic activity of ZrO2@void@BiVO4 is similar to that of pure phase BiVO4, which makes it can be used for preparing liquid-gas phase boundary visble-light photocatalyst.

Morphology-controlled synthesis of SnO2/C hollow core–shell nanoparticle aggregates with improved lithium storage

2013 ◽  
Vol 1 (11) ◽  
pp. 3652 ◽  
Author(s):  
Hong Guo ◽  
Rui Mao ◽  
Dongxue Tian ◽  
Wei Wang ◽  
Depeng Zhao ◽  
...  
Keyword(s):  
Core Shell ◽  
Controlled Synthesis ◽  
Hollow Core ◽  
Lithium Storage ◽  
Nanoparticle Aggregates

Synthesis of hollow core-shell ZnCo2O4 spheres and their formation mechanism

2014 ◽  
Vol 40 (1) ◽  
pp. 1599-1603 ◽  
Author(s):  
Yixin Sun ◽  
Lixin Zhang ◽  
Jia Zhang ◽  
Peng Chen ◽  
Shuxiang Xin ◽  
...  
Keyword(s):  
Formation Mechanism ◽  
Core Shell ◽  
Hollow Core

scholarly journals Preparation of Hollow Core–Shell Fe3O4/Nitrogen-Doped Carbon Nanocomposites for Lithium-Ion Batteries

Molecules ◽  
2022 ◽  
Vol 27 (2) ◽  
pp. 396
Author(s):  
Jie Wang ◽  
Qin Hu ◽  
Wenhui Hu ◽  
Wei Zhu ◽  
Ying Wei ◽  
...  
Keyword(s):  
Lithium Ion Batteries ◽  
Iron Oxides ◽  
Electrode Materials ◽  
Low Cost ◽  
Lithium Ion ◽  
Cycle Performance ◽  
Etching Time ◽  
Core Shell ◽  
Hollow Core ◽  
Carbon Nanocomposites

Iron oxides are potential electrode materials for lithium-ion batteries because of their high theoretical capacities, low cost, rich resources, and their non-polluting properties. However, iron oxides demonstrate large volume expansion during the lithium intercalation process, resulting in the electrode material being crushed, which always results in poor cycle performance. In this paper, to solve the above problem, iron oxide/carbon nanocomposites with a hollow core–shell structure were designed. Firstly, an Fe2O3@polydopamine nanocomposite was prepared using an Fe2O3 nanocube and dopamine hydrochloride as precursors. Secondly, an Fe3O4@N-doped C composite was obtained by means of further carbonization treatment. Finally, Fe3O4@void@N-Doped C-x composites with core–shell structures with different void sizes were obtained by means of Fe3O4 etching. The effect of the etching time on the void size was studied. The electrochemical properties of the composites when used as lithium-ion battery materials were studied in more detail. The results showed that the sample that was obtained via etching for 5 h using 2 mol L−1 HCl solution at 30 °C demonstrated better electrochemical performance. The discharge capacity of the Fe3O4@void@N-Doped C-5 was able to reach up to 1222 mA g h−1 under 200 mA g−1 after 100 cycles.

scholarly journals Erratum: Growth rate controlled synthesis of hierarchical Bi2S3/In2S3 core/shell microspheres with enhanced photocatalytic activity

2014 ◽  
Vol 4 (1) ◽  
Author(s):  
Juan Zhou ◽  
Guohui Tian ◽  
Yajie Chen ◽  
Yunhan Shi ◽  
Chungui Tian ◽  
...  
Keyword(s):  
Growth Rate ◽  
Photocatalytic Activity ◽  
Core Shell ◽  
Controlled Synthesis ◽  
Rate Controlled

scholarly journals Morphology-controlled Synthesis of Hollow Core-shell Structuralalpha-MoO$lt;inf$gt;3$lt;/inf$gt;-SnO$lt;inf$gt;2$lt;/inf$gt; with Superior Lithium Storage

2015 ◽  
Vol 30 (9) ◽  
pp. 919
Author(s):  
WANG Ya-Peng ◽  
LIU Jia-Jia ◽  
LIU Chun-Xiao ◽  
CHEN Wei-Wei ◽  
LI Ting-Ting ◽  
...  
Keyword(s):  
Core Shell ◽  
Controlled Synthesis ◽  
Hollow Core ◽  
Lithium Storage

Core-Shell Molecularly Imprinted Polymer Nanocomposites for Biomedical and Environmental Applications

2019 ◽  
Vol 25 (34) ◽  
pp. 3633-3644
Author(s):  
Nasrullah Shah ◽  
Saba Gul ◽  
Mazhar Ul-Islam
Keyword(s):  
Food Processing ◽  
Selective Adsorption ◽  
Environmental Applications ◽  
Core Shell ◽  
Template Molecule ◽  
Hollow Core ◽  
Imprinted Polymer ◽  
Adsorption Selectivity ◽  
Molecularly Imprinting Polymers ◽  
Relative Adsorption

: Core-shell polymers represent a class of composite particles comprising of minimum two dissimilar constituents, one at the center known as a core which is occupied by the other called shell. Core-shell molecularly imprinting polymers (CSMIPs) are composites prepared via printing a template molecule (analyte) in the coreshell assembly followed by their elimination to provide the everlasting cavities specific to the template molecules. Various other types of CSMIPs with a partial shell, hollow-core and empty-shell are also prepared. Numerous methods have been reported for synthesizing the CSMIPs. CSMIPs composites could develop the ability to identify template molecules, increase the relative adsorption selectivity and offer higher adsorption capacity. Keen features are measured that permits these polymers to be utilized in numerous applications. It has been developed as a modern technique with the probability for an extensive range of uses in selective adsorption, biomedical fields, food processing, environmental applications, in utilizing the plant's extracts for further applications, and sensors. This review covers the approaches of developing the CSMIPs synthetic schemes, and their application with special emphasis on uses in the biomedical field, food care subjects, plant extracts analysis and in environmental studies.

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