نتایج جستجو برای: mesoporous silica kit 6

تعداد نتایج: 1021345  

Journal: :Chemistry 2015
Winfried Nickel Martin Oschatz Soledad Rico-Francés Stefan Klosz Tim Biemelt Giovanni Mondin Alexander Eychmüller Joaquín Silvestre-Albero Stefan Kaskel

A novel synthesis method for ordered mesoporous carbons is presented. The inverse replication of a silica template was achieved using the carbonization of sucrose within mesoporous KIT-6. Instead of liquid acid etching, as in classical nanocasting, a novel dry chlorine etching procedure for template removal is presented for the first time. The resultant ordered mesostructured carbon material ou...

1998
Limin Qi Jiming Ma Humin Cheng Zhenguo Zhao

Mesoporous silica spheres ranging from 2 to 6 μm in size were synthesized under static acidic conditions by mixed cationic-nonionic surfactant templating. The mesoporous structure of the calcined silica microspheres was characterized by X-ray diffraction (XRD) and nitrogen sorption, whereas the morphology and size of the microspheres were revealed by scanning electron microscopy (SEM). It was s...

2013
Mohamad Hassan Amin James Tardio Suresh K. Bhargava

The activity of Ni supported on mesoporous SBA-15, MCM-41, KIT-6, and a sol-gel prepared Ni/γAl2O3, for catalysing methane dry reforming was investigated. The chemical and physical characteristics of the catalysts before and after catalytic testing were investigated using X-Ray diffraction, X-ray Photoemission Spectroscopy, Transmission Electron Microscopy, Scanning Electron Microscopy / Energy...

2017
Qing Qu Jian-Hua Zhang Jing Wang Qing-Yu Li Chang-Wei Xu Xihong Lu

Considerable efforts have been devoted recently to design and fabrication of high performance and low cost electrocatalysts for oxygen evolution reaction (OER). However, catalytic activity of current electrocatalysts is usually restricted by high onset potential and limited active sites. Herein, we fabricated three-dimensional (3D) highly ordered mesoporous Pd-Co3O4 composite materials as excel...

Journal: :Langmuir : the ACS journal of surfaces and colloids 2017
Silo Meoto Niall Kent Michael M Nigra Marc-Olivier Coppens

Hierarchically structured membranes composed of mesoporous silica embedded inside the channels of anodic alumina (MS-AAM) were synthesized using the aspiration method. Ethanol is shown to have a significant effect on the type and organization of the mesoporous silica phase. Detailed textural analysis revealed that the pore size distribution of the mesoporous silica narrows and the degree of ord...

2013
Ying Wang Qinfu Zhao Yanchen Hu Lizhang Sun Ling Bai Tongying Jiang Siling Wang

The goal of the present study was to compare the drug release properties and stability of the nanoporous silica with different pore architectures as a matrix for improved delivery of poorly soluble drugs. For this purpose, three dimensional ordered macroporous (3DOM) silica with 3D continuous and interconnected macropores of different sizes (200 nm and 500 nm) and classic mesoporous silica (ie,...

Journal: :analytical and bioanalytical chemistry research 0
mohadeseh sojoudi department of chemistry, rasht branch, islamic azad university, rasht, iran shahab shariati islamic azad university, rasht branch, rasht, iran maryam khabazipour department of chemistry, rasht branch, islamic azad university, rasht, iran

in this study, amine functionalized kit-6 silica mesoporous magnetite nanocomposite (nh2-mmnc) was synthesized by chemical methods and used as an efficient and recoverable adsorbent for removal of ponceau 4r, as a toxic dye, from aqueous solutions. the synthesized nanocomposites were characterized by xrd, ft-ir, bet and sem instruments. the effect of various experimental parameters on the dye r...

2017
Wenxing Wang Peiyuan Wang Xueting Tang Ahmed A. Elzatahry Shuwen Wang Daifallah Al-Dahyan Mengyao Zhao Chi Yao Chin-Te Hung Xiaohang Zhu Tiancong Zhao Xiaomin Li Fan Zhang Dongyuan Zhao

The low-efficiency cellular uptake property of current nanoparticles greatly restricts their application in the biomedical field. Herein, we demonstrate that novel virus-like mesoporous silica nanoparticles can easily be synthesized, showing greatly superior cellular uptake property. The unique virus-like mesoporous silica nanoparticles with a spiky tubular rough surface have been successfully ...

Journal: :Chemical and Biological Technologies in Agriculture 2022

Abstract Background Wheat is one of the main food for around 2 billion people worldwide. Among biological stressors, Eurygaster integriceps Puton a damaging insect in wheat and barley fields, which harms them both quantitatively (by overwintered adults) qualitatively instar nymphs). The ovipositional new generation’s production control are pivotal approaches to severe damages Sunn-pest. Methods...

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