Phase Transformation in Titania Nanocrystals by the Oriented Attachment Mechanism: The Role of the pH Value

2009 ◽  
Vol 15 (9) ◽  
pp. 2217-2222 ◽  
Author(s):  
Caue Ribeiro ◽  
Cristiano M. Barrado ◽  
Emerson R. de Camargo ◽  
Elson Longo ◽  
Edson R. Leite
Keyword(s):  
Phase Transformation ◽  
Ph Value ◽  
Oriented Attachment ◽  
Attachment Mechanism

scholarly journals Role of the Oriented Attachment Mechanism in the Phase Transformation of Oxide Nanocrystals

2007 ◽  
Vol 13 (20) ◽  
pp. 5798-5803 ◽  
Author(s):  
Caue Ribeiro ◽  
Cristiane Vila ◽  
José Milton Elias de Matos ◽  
Jefferson Bettini ◽  
Elson Longo ◽  
...  
Keyword(s):  
Phase Transformation ◽  
Oriented Attachment ◽  
Attachment Mechanism

Self-Assembly of KxWO3 Nanowires into Nanosheets by an Oriented Attachment Mechanism

2013 ◽  
Vol 5 (20) ◽  
pp. 10346-10351 ◽  
Author(s):  
Shuangfeng Jia ◽  
He Zheng ◽  
Hongqian Sang ◽  
Wenjing Zhang ◽  
Han Zhang ◽  
...  
Keyword(s):  
Self Assembly ◽  
Oriented Attachment ◽  
Attachment Mechanism

scholarly journals Ultrathin SnO2 Nanosheets: Oriented Attachment Mechanism, Nonstoichiometric Defects, and Enhanced Lithium-Ion Battery Performances

2012 ◽  
Vol 116 (6) ◽  
pp. 4000-4011 ◽  
Author(s):  
Cen Wang ◽  
Gaohui Du ◽  
Kenny Ståhl ◽  
Haixiao Huang ◽  
Yijun Zhong ◽  
...  
Keyword(s):  
Lithium Ion Battery ◽  
Lithium Ion ◽  
Oriented Attachment ◽  
Attachment Mechanism

scholarly journals The role of TLR-4 in the immunomodulatory effects of recombinant BCG expressing MSP-1C of Plasmodium falciparum

2019 ◽  
Vol 13 (11) ◽  
pp. 1057-1061
Author(s):  
Muhammad Adamu Abbas ◽  
Rapeah Suppian
Keyword(s):  
Nitric Oxide ◽  
Plasmodium Falciparum ◽  
Inflammatory Responses ◽  
Peritoneal Macrophages ◽  
Significant Inhibition ◽  
Immunomodulatory Effects ◽  
Attachment Mechanism ◽  
Significant Production ◽  
Recombinant Bcg

Introduction: An earlier constructed recombinant BCG expressing the MSP-1C of Plasmodium falciparum, induced inflammatory responses leading to significant production of nitric oxide (NO) alongside higher expression of the enzyme inducible nitric oxide synthase (iNOS) and significant production of the regulatory cytokine, IL-10, indicating significant immunomodulatory effects of the construct. The mechanism of these responses had not been established but is thought to involve toll-like receptor 4 (TLR-4). Methodology: The present study was carried out to determine the role of TLR-4 on eliciting the immunomodulatory effects of recombinant BCG expressing MSP-1C of Plasmodium falciparum leading to the production of NO and IL-10, as well as the expression of iNOS. Six groups of mice (n = 6 per group) were immunised thrice, three weeks apart with intraperitoneal phosphate buffered saline T80 (PBS-T80), BCG or rBCG in the presence or absence of a TLR-4 inhibitor; TAK-242, given one hour prior to each immunisation. Peritoneal macrophages were harvested from the mice and cultured for the determination of NO, iNOS and IL-10 via Griess assay, ELISA and Western blot respectively. Results: The results showed significant inhibition of the production of NO and IL-10 and the expression of iNOS in all groups of mice in the presence of TAK-242. Conclusions: These results presented evidence of the role of TLR-4/rBCG attachment mechanism in modulating the production of NO and IL-10 and the expression of iNOS in response to our rBCG-based malaria vaccine candidate expressing MSP-1C of P. falciparum.

Oriented Attachment Mechanism in Anisotropic Nanocrystals: A “Polymerization” Approach

ChemPhysChem ◽  
2006 ◽  
Vol 7 (3) ◽  
pp. 664-670 ◽  
Author(s):  
Caue Ribeiro ◽  
Eduardo J. H. Lee ◽  
Elson Longo ◽  
Edson R. Leite
Keyword(s):  
Oriented Attachment ◽  
Attachment Mechanism

Bifunctional electrocatalytic CoNi-doped manganese oxide produced from microdumbbell manganese carbonate towards oxygen reduction and oxygen evolution reactions

2018 ◽  
Vol 2 (6) ◽  
pp. 1170-1177 ◽  
Author(s):  
Harnchana Gatemala ◽  
Soracha Kosasang ◽  
Montree Sawangphruk
Keyword(s):  
Manganese Oxide ◽  
Oxygen Reduction ◽  
Oxygen Evolution ◽  
Oriented Attachment ◽  
Manganese Carbonate ◽  
Attachment Mechanism

Manganese carbonate microdumbbells grown via an oriented attachment mechanism were employed as a template for producing a bifunctional Co/Ni-doped MnO2 electrocatalyst towards the ORR/OER.

scholarly journals Role of twinning on the omega-phase transformation and stability in zirconium

2020 ◽  
Vol 185 ◽  
pp. 211-217 ◽  
Author(s):  
M. Arul Kumar ◽  
N. Hilairet ◽  
R.J. McCabe ◽  
T. Yu ◽  
Y. Wang ◽  
...  
Keyword(s):  
Phase Transformation ◽  
Omega Phase

scholarly journals A Novel Process for the Synthesis of NaV2O5 Mesocrystals from Alkaline-Stripped Vanadium Solution via the Hydrothermal Hydrogen Reduction Method

Minerals ◽  
2019 ◽  
Vol 9 (5) ◽  
pp. 271
Author(s):  
Guobin Zhang ◽  
Yimin Zhang ◽  
Shenxu Bao ◽  
Liuhong Zhang
Keyword(s):  
Electron Microscopy ◽  
Hydrogen Reduction ◽  
Ph Value ◽  
Hydrothermal Process ◽  
Reduction Process ◽  
Oriented Attachment ◽  
Synthesis Process ◽  
Synthesis Mechanism ◽  
Time Saving ◽  
Synthesis Time

NaV2O5 mesocrystals were successfully synthesized from an alkaline-stripped pentavalent vanadium solution through a novel hydrothermal hydrogen reduction process. The optimal conditions for the hydrogen partial pressure, reaction temperature, initial solution pH value, and reaction time for the pure-phase NaV2O5 synthesis were ascertained to be 4 MPa, 200 °C, 4.0, and 2 h, respectively. The synthesis time (only 2 h) was greatly shortened, by nine times, compared with the most time-saving (18 h) hydrothermal process at present. X-ray diffraction (XRD) analysis revealed that the as-prepared powders demonstrated a typical layered orthorhombic structure of NaV2O5. The purity of the as-prepared NaV2O5 reached up to 99.98%. An electrochemical test showed that the as-prepared NaV2O5 has a potential application in sodium ion batteries. According to scanning electron microscopy (SEM) and transmission electron microscopy (TEM) analyses, the as-prepared NaV2O5 powders were identified to have rod-like mesocrystals consisting of small rods which preferentially grow along the (010) direction. Furthermore, the phase transformation mechanism and crystal growth mechanism in NaV2O5 preparation were discussed systematically, based on which the synthesis mechanism of NaV2O5 was proposed as pentavalent vanadates pre-sedimentation, hydrogen reduction with dehydration, sodium ions insertion, and finally self-assembly oriented attachment. The synthesis process is characterized as time-saving and low-cost, and thus it may have great application prospects.

Sign in / Sign up

Export Citation Format

Share Document