نتایج جستجو برای: mesoporous silica kit 6

تعداد نتایج: 1021345  

2011
Luciana M Hollanda Gisele CG Cury Rafaella FC Pereira Gracielle A Ferreira Andreza Sousa Edesia MB Sousa Marcelo Lancellotti

BACKGROUND This study aimed the use of mesoporous silica under the naturally transformable Neisseria meningitidis, an important pathogen implicated in the genetic horizontal transfer of DNA causing a escape of the principal vaccination measures worldwide by the capsular switching process. This study verified the effects of mesoporous silica under N. meningitidis transformation specifically unde...

   In this research, mesoporous silica was served as the host of molybdate (corrosion inhibitor). The loaded mesoporous silica was dispersed in a paint matrix. The composite was then coated on the carbon steel surface. Polarization and electrochemical impedance spectroscopy (EIS) tests showed that the corrosion resistance of the scratched paint containing molybdate loaded mesoporous silica ...

2017
Chuan Ming Tseng Hsin Liang Chen Sz Nian Lai Ming Shiung Chen Chien Jung Peng Chia Jui Li Wei Hsuan Hung

"Carbon-based material" has demonstrated a great potential on water purification due to its strong physical adsorption to organic pollutants in the water. Three-dimensional cubic ordered mesoporous carbon (CMK-8), one of the well-known ordered mesoporous carbons, was prepared by using nanocasting method with mesoporous silica (KIT-6) as the template. In this study, CMK-8 blended with Nafion pol...

Journal: :Chemical communications 2015
Tsuneomi Kawasaki Yuko Araki Kunihiko Hatase Kenta Suzuki Arimasa Matsumoto Toshiyuki Yokoi Yoshihiro Kubota Takashi Tatsumi Kenso Soai

Mesoporous silica has been used as a heterogeneous support for catalysts; however, asymmetric induction by the helicity of inorganic mesoporous silica itself has not yet been achieved. P- and M-helical mesoporous silica was found to act as a chiral inorganic trigger for asymmetric autocatalysis to afford (S) and (R)-pyrimidyl alkanol with >99.5% ee, respectively.

Journal: :Chemical communications 2011
Yu-Shen Lin Nardine Abadeer Christy L Haynes

In this work, sub-50 nm pegylated mesoporous silica nanoparticles prepared with hydrothermal treatment are shown to have long-term stability in various media at both room and physiological temperature. Compared to bare mesoporous silica nanoparticles, the highly pegylated mesoporous silica nanoparticles show significantly improved biocompatibility and decreased macrophage uptake, making these n...

2003
Oun-Ho Park Se-Young Seo Ji-In Jung Jae Young Bae Byeong-Soo Bae

Transparent mesoporous silica films were prepared by sol-gel spin coating on silicon wafers at room temperature. An erbium complex, erbium tris 8-hydroxyquinoline (ErQ), was homogeneously impregnated into the pores of the mesoporous silica films, and its concentration was easily controlled by using a solution immersing technique. The ErQ-impregnated mesoporous silica films show a room-temperatu...

Journal: :Chemical communications 2002
Min Kang Seung Hwan Yi Hyung Ik Lee Jae Eui Yie Ji Man Kim

Highly ordered mesoporous silica can be regenerated from a mesoporous carbon CMK-3 that is a negative replica of mesoporous silica SBA-15, indicating reversible replication between carbon and inorganic materials.

2010
Yuanhang Ren Bin Yue Min Gu Heyong He

Mesoporous silica molecular sieves are a kind of unique catalyst support due to their large pore size and high surface area. Several methods have been developed to immobilize heteropolyacids (HPAs) inside the channels of these mesoporous silicas. The mesoporous silica-supported HPA materials have been widely used as recyclable catalysts in heterogeneous systems. They have shown high catalytic a...

2009
Zhihong Gong Guangbin Ji Mingbo Zheng Xiaofeng Chang Weijie Dai Lijia Pan Yi Shi Youdou Zheng

Mesoporous silica nanofibers were synthesized within the pores of the anodic aluminum oxide template using a simple sol-gel method. Transmission electron microscopy investigation indicated that the concentration of the structure-directing agent (EO20PO70EO20) had a significant impact on the mesostructure of mesoporous silica nanofibers. Samples with alignment of nanochannels along the axis of m...

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