scholarly journals In situ coupling of Ti2O with rutile TiO2 as a core–shell structure and its photocatalysis performance

RSC Advances ◽  
2017 ◽  
Vol 7 (86) ◽  
pp. 54662-54667 ◽  
Author(s):  
Qingjie Wang ◽  
Jiajie Fan ◽  
Shilin Zhang ◽  
Yifan Yun ◽  
Jinhua Zhang ◽  
...  
Keyword(s):  
Visible Light ◽  
Shell Structure ◽  
Oxidation Behavior ◽  
Light Response ◽  
Core Shell ◽  
Rutile Tio2 ◽  
Visible Light Response ◽  
Core Shell Structure

The bimodal oxidation behavior of TiH2 generates a core–shell structure. The formation of Ti2O promotes visible-light response.

In situ synthesis of n–n Bi2MoO6 & Bi2S3 heterojunctions for highly efficient photocatalytic removal of Cr(vi)

2018 ◽  
Vol 6 (45) ◽  
pp. 22580-22589 ◽  
Author(s):  
Xiu-Qing Qiao ◽  
Zhen-Wei Zhang ◽  
Qiu-Hao Li ◽  
Dongfang Hou ◽  
Qichun Zhang ◽  
...  
Keyword(s):  
Visible Light ◽  
Visible Light Irradiation ◽  
Shell Structure ◽  
In Situ Synthesis ◽  
Light Irradiation ◽  
Core Shell ◽  
Two Dimensional ◽  
Photocatalytic Removal ◽  
Core Shell Structure

Two-dimensional (2D) n–n Bi2MoO6 & Bi2S3 heterojunction with core–shell structure exhibits unprecedented efficiency for photocatalytic reduction of Cr(vi) under visible light irradiation.

scholarly journals In Situ Synthesis of Core-Shell-Structured SiCp Reinforcements in Aluminium Matrix Composites by Powder Metallurgy

Metals ◽  
2021 ◽  
Vol 11 (8) ◽  
pp. 1201
Author(s):  
Xinghua Ji ◽  
Cheng Zhang ◽  
Shufeng Li
Keyword(s):  
Particle Size ◽  
Powder Metallurgy ◽  
Shell Structure ◽  
Ex Situ ◽  
Aluminium Matrix ◽  
Core Shell ◽  
Matrix Composites ◽  
Aluminium Matrix Composites ◽  
Core Shell Structure

SiCp reinforced aluminium matrix composites (AMCs), which are widely used in the aerospace, automotive, and electronic packaging fields along with others, are usually prepared by ex situ techniques. However, interfacial contamination and poor wettability of the ex situ techniques make further improvement in their comprehensive performance difficult. In this paper, SiCp reinforced AMCs with theoretical volume fractions of 15, 20, and 30% are prepared by powder metallurgy and in situ reaction via an Al-Si-C system. Moreover, a combined method of external addition and an in situ method is used to investigate the synergistic effect of ex situ and in situ SiCp on AMCs. SiC particles can be formed by an indirect reaction: 4Al + 3C → Al4C3 and Al4C3 + 3Si → 3SiC + 4Al. This reaction is mainly through the diffusion of Si, in which Si diffuses around Al4C3 and then reacts with Al4C3 to form SiCp. The in situ SiC particles have a smooth boundary, and the particle size is approximately 1–3 μm. A core-shell structure having good bonding with an aluminium matrix was generated, which consists of an ex situ SiC core and an in situ SiC shell with a thickness of 1–5 μm. The yield strength and ultimate tensile strength of in situ SiCp reinforced AMCs can be significantly increased with a constant ductility by adding 5% ex situ SiCp for Al-28Si-7C. The graphite particle size has a significant effect on the properties of the alloy. A criterion to determine whether Al4C3 is a complete reaction is achieved, and the forming mechanism of the core-shell structure is analysed.

Multi-component in situ and in-step formation of visible-light response C-dots composite TiO2 mesocrystals

RSC Advances ◽  
2016 ◽  
Vol 6 (17) ◽  
pp. 14306-14313 ◽  
Author(s):  
Dong Yan ◽  
Yun Liu ◽  
Chun-yan Liu ◽  
Zhi-ying Zhang ◽  
Shi-dong Nie
Keyword(s):  
Carbon Source ◽  
Visible Light ◽  
Light Response ◽  
Visible Light Response

Successful in situ and in-step formation of C-dots composited TiO2 mesocrystals is closely related to the complexation between carbon source and Ti ion.

Research of In Situ Polymerization and Core-Shell Structure Modified Emulsified Asphalt

2011 ◽  
Vol 71-78 ◽  
pp. 928-931
Author(s):  
Jin Liang Wu ◽  
Yong Xing Zhang ◽  
Chun Sun Zhang
Keyword(s):  
Shell Structure ◽  
In Situ Polymerization ◽  
Core Shell ◽  
Asphalt Emulsion ◽  
Sound Effect ◽  
Structure And Property ◽  
Modified Asphalt ◽  
Core Shell Structure ◽  
Emulsified Asphalt

Nowadays, there are dominantly two ways of producing modified emulsified asphalt ,one of which is to emulsify modified asphalt, the other to modify asphalt emulsion. But they have the same defect that modifier cannot be evenly mixed with asphalt emulsion, which has side effect on the performance of modified emulsified asphalt. The emulsified asphalt and modifier have different traits in structure and property. In order to make the modifier disperse in asphalt emulsion evenly to improve the performance of modified emulsified asphalt, a tentative idea is brought forward: we shall utilize in-situ polymerization and core-shell structure to enhance feature of emulsified asphalt. Core-shell structure is a method of synthesizing composite material, which can assist to achieve sound effect of the two kinds of materials. The point to emphasize is, in this paper, the introduction and feasibility of the method, its specialty against current mainly methods, the difficulties encountered in practice as well as its promising prospect and the anticipated target to achieve will all be illustrated.

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