Shape evolution of perovskite LaFeO3 nanostructures: a systematic investigation of growth mechanism, properties and morphology dependent photocatalytic activities

RSC Advances ◽  
2013 ◽  
Vol 3 (20) ◽  
pp. 7549 ◽  
Author(s):  
S. Thirumalairajan ◽  
K. Girija ◽  
Neha Y. Hebalkar ◽  
D. Mangalaraj ◽  
C. Viswanathan ◽  
...  
Keyword(s):  
Growth Mechanism ◽  
Systematic Investigation ◽  
Shape Evolution ◽  
Photocatalytic Activities

SHAPE EVOLUTION IN ONE-DIMENSIONAL ZnO NANOSTRUCTURES GROWN FROM ZnO NANOPOWDER SOURCE: VAPOR–LIQUID–SOLID VERSUS VAPOR–SOLID GROWTH MECHANISMS

2011 ◽  
Vol 10 (01n02) ◽  
pp. 75-79 ◽  
Author(s):  
SOUMEN DHARA ◽  
P. K. GIRI
Keyword(s):  
Growth Mechanism ◽  
Growth Temperature ◽  
Shape Evolution ◽  
Zno Nanostructures ◽  
Growth Mechanisms ◽  
Vapor Liquid Solid ◽  
One Dimensional ◽  
Zno Nanopowder ◽  
Simultaneous Growth ◽  
Vapor Liquid

Here we report on the growth and evolution of ZnO nanowires grown from ZnO nanopowder as a source material using a horizontal muffle furnace. The shape evolution has been studied with variation in growth temperature and zinc vapor pressure. The structural analysis on these nanostructures shows c-axis oriented aligned growth. Scanning electron microscopy imaging of these nanostructures revealed the shape evolution from nanowires to nanoribbons and then to nanorods as the growth temperature increases from 650°C to 870°C. At 650°C, only vertical nanowires have been observed and with increase in growth temperature nanowires transform to nanoribbons and then to nanorods at 870°C. And we also observed simultaneous growth of nanorods and nanoribbons under a specific growth condition. We believe that these nanowires and nanorods were formed by vapor–liquid–solid growth mechanism (catalyst-mediated growth), whereas nanoribbons were grown by vapor–solid growth mechanism (without the aid of a metal catalyst). We observed simultaneous occurrence of vapor–liquid–solid and vapor–solid growth mechanisms at a particular growth temperature. These ZnO nanowires exhibit bound exciton related UV emission at ~379 nm, and defect-emission band in the visible region. Possible growth mechanism, shape evolution, and simultaneous growth of two types of one-dimensional ZnO nanostructures under the same growth condition are discussed.

Calcite crystallization in the cement system: morphological diversity, growth mechanism and shape evolution

2018 ◽  
Vol 20 (20) ◽  
pp. 14174-14181 ◽  
Author(s):  
Jinyang Jiang ◽  
Qi Zheng ◽  
Dongshuai Hou ◽  
Yiru Yan ◽  
Heng Chen ◽  
...  
Keyword(s):  
Growth Mechanism ◽  
Calcium Silicate ◽  
Calcium Silicate Hydrate ◽  
Morphological Diversity ◽  
Low Ph ◽  
Shape Evolution ◽  
Engineering Construction ◽  
Cement System

Carbonation plays an indispensable role in engineering construction, embracing mineralization, CO2 sequestration and low pH induced corrosion, but the essential mechanism of carbonation occurring in calcium silicate hydrate or portlandite can hardly be interpreted.

Hydrothermal synthesized Bi2WO6 nanoplates: growth mechanism and photocatalytic activities

2019 ◽  
Vol 6 (11) ◽  
pp. 1150g6 ◽  
Author(s):  
Liang Bao ◽  
Qinyu Bao ◽  
Tongshuai Huangfu ◽  
Yifan Chen ◽  
Tao Yang ◽  
...  
Keyword(s):  
Growth Mechanism ◽  
Photocatalytic Activities

Low Temperature Synthesis of Cu2O Crystals: Shape Evolution and Growth Mechanism

2010 ◽  
Vol 10 (1) ◽  
pp. 99-108 ◽  
Author(s):  
Yongming Sui ◽  
Wuyou Fu ◽  
Haibin Yang ◽  
Yi Zeng ◽  
Yanyan Zhang ◽  
...  
Keyword(s):  
Low Temperature ◽  
Growth Mechanism ◽  
Shape Evolution ◽  
Low Temperature Synthesis ◽  
Temperature Synthesis

Polyol-Mediated Synthesis of PbS Crystals: Shape Evolution and Growth Mechanism

2008 ◽  
Vol 8 (7) ◽  
pp. 2384-2392 ◽  
Author(s):  
Zewei Quan ◽  
Chunxia Li ◽  
Xiaoming Zhang ◽  
Jun Yang ◽  
Piaoping Yang ◽  
...  
Keyword(s):  
Growth Mechanism ◽  
Shape Evolution

Controllable hydrothermal synthesis of manganese dioxide nanostructures: shape evolution, growth mechanism and electrochemical properties

CrystEngComm ◽  
2012 ◽  
Vol 14 (12) ◽  
pp. 4196 ◽  
Author(s):  
Xiaochuan Duan ◽  
Jiaqin Yang ◽  
Haiyan Gao ◽  
Jianmin Ma ◽  
Lifang Jiao ◽  
...  
Keyword(s):  
Hydrothermal Synthesis ◽  
Electrochemical Properties ◽  
Manganese Dioxide ◽  
Growth Mechanism ◽  
Shape Evolution

Single-Crystalline β-Ga2O3 Hexagonal Nanodisks: Synthesis, Growth Mechanism, and Photocatalytic Activities

2009 ◽  
Vol 113 (52) ◽  
pp. 21548-21554 ◽  
Author(s):  
Heqing Yang ◽  
Ruyu Shi ◽  
Jie Yu ◽  
Ruini Liu ◽  
Ruigang Zhang ◽  
...  
Keyword(s):  
Growth Mechanism ◽  
Single Crystalline ◽  
Photocatalytic Activities
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