Synthesis of cuprous oxide with morphological evolution from truncated octahedral to spherical structures and their size and shape-dependent photocatalytic activities

2016 ◽  
Vol 461 ◽  
pp. 25-31 ◽  
Author(s):  
Deli Jiang ◽  
Chaosheng Xing ◽  
Ximeng Liang ◽  
Leqiang Shao ◽  
Min Chen
Keyword(s):  
Cuprous Oxide ◽  
Morphological Evolution ◽  
Size And Shape ◽  
Photocatalytic Activities ◽  
Spherical Structures

Concentration-directed morphological evolution of boronate ester-based dynamic covalent nanoparticles: a facile approach for size and shape control

2018 ◽  
Vol 9 (7) ◽  
pp. 815-819 ◽  
Author(s):  
Fuli Zhao ◽  
Anjie Dong ◽  
Jinfeng Ma ◽  
Liandong Deng ◽  
Jianhua Zhang
Keyword(s):  
Shape Control ◽  
Morphological Evolution ◽  
Formation Processes ◽  
Boronate Ester ◽  
Size And Shape ◽  
Facile Route

Precursor concentrations dictated the formation processes of dynamic boronate nanoparticles, thus providing a facile route for morphological and size manipulation.

Microwave Synthesis of Cuprous Oxide Micro-/Nanocrystals with Different Morphologies and Photocatalytic Activities

2011 ◽  
Vol 27 (4) ◽  
pp. 289-295 ◽  
Author(s):  
Qingwei Zhu ◽  
Yihe Zhang ◽  
Jiajun Wang ◽  
Fengshan Zhou ◽  
Paul K. Chu
Keyword(s):  
Microwave Synthesis ◽  
Cuprous Oxide ◽  
Photocatalytic Activities

Study of ZnO Nanoparticles-Decorated TiO2 {001} Facets Heterostructures and their Photocatalytic Activity

2019 ◽  
Vol 298 ◽  
pp. 175-180
Author(s):  
Ke Yue Wu ◽  
Jing Biao Cui
Keyword(s):  
Photocatalytic Activity ◽  
Hydrothermal Method ◽  
Zno Nanoparticles ◽  
Growth Temperature ◽  
Charge Recombination ◽  
Simple Hydrothermal Method ◽  
Size And Shape ◽  
Zno Nanocrystals ◽  
Photocatalytic Activities

ZnO decorated-TiO2 nanosheets with exposed {001} facets were achieved by a simple hydrothermal method. The size and shape of ZnO nanoparticles were controlled by tuning the growth temperature. SEM, HRTEM, and SAED measurements confirmed the formation of {001} TiO2 nanosheets with the decoration of ZnO nanoparticles. The ZnO/TiO2 {001} facets heterostructures show an improved efficient in photocatalytic activities due to the decreased charge recombination with the presence of ZnO nanocrystals.

Cuprous oxide nanostructures tuned by histidine-containing peptides and their photocatalytic activities

2018 ◽  
Vol 453 ◽  
pp. 173-181 ◽  
Author(s):  
Chengdong Wang ◽  
Liyan Zhang ◽  
Jingge Yang ◽  
Dong Wang ◽  
Yawei Sun ◽  
...  
Keyword(s):  
Cuprous Oxide ◽  
Oxide Nanostructures ◽  
Photocatalytic Activities

Comparative study of putative conspecific sponge populations from both sides of the Isthmus of Panama

1999 ◽  
Vol 79 (1) ◽  
pp. 39-50 ◽  
Author(s):  
N. Boury-Esnault ◽  
M. Klautau ◽  
C. Bézac ◽  
J. Wulff ◽  
A.M. Solé-Cava
Keyword(s):  
Morphological Evolution ◽  
Biological Species ◽  
Type I ◽  
Gene Divergence ◽  
Size And Shape ◽  
Isthmus Of Panama ◽  
The Pacific ◽  
The Caribbean ◽  
High Level ◽  
Two Populations

A morphological, cytological and genetic comparison of putative conspecific populations of Spirastrella sp. cf. mollis (Porifera: Demospongiae) from both sides of the Isthmus of Panama revealed a very high level of genetic differentiation together with morphological and cytological differences. The main differences were the distribution of the spirasters within the choanosome, the size and shape of spirasters 1, and the size and shape of inclusions within type I cells. Consequently these two populations clearly belong to different biological species. The Atlantic one, S. hartmani sp. nov. corresponds to what previous authors have called S. cunctatrix in the Caribbean. The finding of this new species raises to three the number of Spirastrella spp. known from the Caribbean Sea. The Pacific species is named here S. sabogae sp. nov. The levels of gene divergence found between S. hartmani and S. sabogae (Nei's genetic distance D=2.30) were as high as those found between different genera in other groups of invertebrates. Similarly exceptionally high values of gene divergence have been found between other congeneric sponge species and may be indicative either of a higher rate of molecular evolution or a very slow rate of morphological evolution in the Porifera compared to other metazoans.

Growth and morphological evolution of hexapod-shaped cuprous oxide microcrystals at room temperature

2004 ◽  
Vol 82 (9) ◽  
pp. 1341-1345 ◽  
Author(s):  
Xu Zhang ◽  
Yi Xie ◽  
Fen Xu ◽  
Di Xu ◽  
Huarong Liu
Keyword(s):  
Cuprous Oxide ◽  
Room Temperature ◽  
Morphological Evolution ◽  
Ambient Pressure ◽  
Reaction System ◽  
Γ Irradiation ◽  
Sem Images ◽  
Experimental Conditions ◽  
Thermal Disturbance ◽  
Xrd Patterns

Growth and morphological evolution of hexapod-shaped Cu2O microcrystals is carefully studied via a γ-irradiation reduction route at room temperature and under ambient pressure. The products are examined by means of XRD patterns and FE-SEM images. The as-obtained hexapod-shaped Cu2O microcrystal is composed of six legs, whose adjacent legs are perpendicular to each other and each leg is composed of two perpendicular cross blades. A simple reaction system, excluding the influence of surfactant and thermal disturbance, would favor revelation of the inherent growth habit of Cu2O microcrystals under relatively mild experimental conditions. Furthermore, the effects of several factors on the final product and morphology are investigated.Key words: hexapod-shaped, γ-irradiation, cuprous oxide, morphological evolution.

Size and shape in ontogeny and phylogeny

Paleobiology ◽  
1979 ◽  
Vol 5 (3) ◽  
pp. 296-317 ◽  
Author(s):  
Pere Alberch ◽  
Stephen Jay Gould ◽  
George F. Oster ◽  
David B. Wake
Keyword(s):  
Developmental Biology ◽  
Adaptive Radiation ◽  
Quantitative Method ◽  
Evolutionary Ecology ◽  
Morphological Evolution ◽  
Comparative Morphology ◽  
Logical Scheme ◽  
Size And Shape ◽  
Unified View

We present a quantitative method for describing how heterochronic changes in ontogeny relate to phyletic trends. This is a step towards creating a unified view of developmental biology and evolutionary ecology in the study of morphological evolution. Using this representation, we obtain a greatly simplified and logical scheme of classification. We believe that this scheme will be particularly useful in studying the data of paleontology and comparative morphology and in the analysis of processes leading to adaptive radiation. We illustrate this scheme by examples drawn from the literature and our own work.

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