Direct synthesis of high quality cubic Ia3d mesoporous material under organosilane assisted

2010 ◽  
Vol 130 (1-3) ◽  
pp. 266-273 ◽  
Author(s):  
Feng Wei ◽  
Jing Yang ◽  
Fang Na Gu ◽  
Ling Gao ◽  
Jian Hua Zhu
Keyword(s):  
Mesoporous Material ◽  
Direct Synthesis ◽  
High Quality

Direct Synthesis of Al-B-SBA-15 and its Application in Рreparing of Bifunctional Platinum Catalyst for Hydrogenation of Tetralin

2018 ◽  
Vol 18 (5) ◽  
pp. 31-36
Author(s):  
Ngo Thi Thanh Hien ◽  
Pham Trung Kien ◽  
Nguyen Anh Vu ◽  
Pham Thanh Huyen
Keyword(s):  
Mesoporous Material ◽  
Hydrogen Pressure ◽  
Platinum Catalyst ◽  
Direct Synthesis ◽  
Synthesis Method ◽  
Nitrogen Adsorption ◽  
Bifunctional Catalyst ◽  
Adsorption Desorption

In this work, the mesoporous material Al-B-SBA-15 has been obtained by direct synthesis method with Si : B : Al ratio of 10 : 0.5 : 0.5. Wetness impregnation (WI) method was used to load platinum on Al-B-SBA-15. The prepared support and catalyst were characterized by nitrogen adsorption-desorption measurement (BET), XRD, TEM, and TPD-NH3 to investigate the influence of aluminium and boron on characteristics of the catalyst. The activity of the bifunctional catalyst was tested for hydrogenation of tetralin at 180–220 °C, hydrogen pressure of 1.5–2.5 MPa for 3 h.

ONE-POT SYNTHESIS OF HYDROPHILIC AND HYDROPHOBIC FERROFLUID

2009 ◽  
Vol 08 (01n02) ◽  
pp. 65-69 ◽  
Author(s):  
DIPAK MAITY ◽  
JUN DING ◽  
JUN-MIN XUE
Keyword(s):  
Magnetic Properties ◽  
Ethylene Glycol ◽  
Direct Synthesis ◽  
Blocking Temperature ◽  
High Quality ◽  
One Pot ◽  
Single Crystalline ◽  
Stabilizing Agent ◽  
One Pot Synthesis ◽  
Tga Analysis

High-quality hydrophobic or hydrophilic ferrofluid based on magnetite ( Fe 3 O 4) nanoparticles can be synthesized by one-pot direct synthesis which involves thermolysis of Iron(III) acetylacetonate, Fe ( acac )3 in hydrophobic or hydrophilic stabilizing agent, respectively. The structure of the nanoparticles dispersed in the ferrofluid was studied using XRD, FTIR, XPS, and TGA analysis, while morphology and size of the nanoparticles were determined by TEM. The magnetic properties of the samples were measured using VSM and SQUID measurement. The results show that oleylamine (OM) and tri(ethylene glycol) (TREG) coated Fe 3 O 4 nanoparticles which are well stabilized in hydrophobic and hydrophilic ferrofluid, respectively, are relatively monodisperse, single crystalline and superparamagnetic in nature with the blocking temperature at around 100 K.

Direct synthesis of high-quality perovskite nanocrystals on a flexible substrate and deterministic transfer

2018 ◽  
Vol 63 (23) ◽  
pp. 1576-1582 ◽  
Author(s):  
Yilun Wang ◽  
Xing Cheng ◽  
Kai Yuan ◽  
Yi Wan ◽  
Pan Li ◽  
...  
Keyword(s):  
Flexible Substrate ◽  
Direct Synthesis ◽  
High Quality ◽  
Perovskite Nanocrystals

Direct Synthesis of High-Quality Water-Soluble CdTe:Zn2+Quantum Dots

2012 ◽  
Vol 51 (17) ◽  
pp. 9208-9213 ◽  
Author(s):  
Qisui Wang ◽  
Tingting Fang ◽  
Peng Liu ◽  
Bohua Deng ◽  
Xinmin Min ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Direct Synthesis ◽  
Water Soluble ◽  
High Quality ◽  
Quality Water

Direct synthesis of high-quality nitrogen-doped graphene via ion implantation

Carbon ◽  
2018 ◽  
Vol 139 ◽  
pp. 732-739 ◽  
Author(s):  
Yunbiao Zhao ◽  
Xu Wang ◽  
Engang Fu ◽  
Dong Han ◽  
Peipei Wang ◽  
...  
Keyword(s):  
Ion Implantation ◽  
Direct Synthesis ◽  
High Quality ◽  
Nitrogen Doped ◽  
Nitrogen Doped Graphene ◽  
Doped Graphene

scholarly journals Copper acetate-facilitated transfer-free growth of high-quality graphene advancing hydrovoltaic electricity generators

2021 ◽  
Author(s):  
Jingyuan Shan ◽  
Sunmiao Fang ◽  
Wendong Wang ◽  
Wen Zhao ◽  
Rui Zhang ◽  
...  
Keyword(s):  
Direct Synthesis ◽  
Copper Acetate ◽  
Poor Performance ◽  
Electrical Performance ◽  
High Quality ◽  
Dielectric Substrates ◽  
Promising Solution ◽  
Free Growth ◽  
Grown Graphene ◽  
Gaseous Form

ABSTRACT Direct synthesis of high-quality graphene on dielectric substrates without a transfer process is of vital importance to aim at a variety of applications. Current strategies for boosting high-quality graphene growth, such as remote metal catalyzation otherwise are limited by poor performance with respect to the release of metal catalysts and hence suffer from the problem of metal residues. Herein, we report an effective approach that utilizes a metal-containing species, copper acetate, to continuously supply copper clusters in a gaseous form to aid transfer-free growth of graphene over a wafer scale. The thus-derived graphene films were found to show reduced multilayer density and improved electrical performance and exhibited a carrier mobility of 8500 cm2 V−1 s−1. Furthermore, droplet-based hydrovoltaic electricity generator devices based on directly grown graphene were found to exhibit robust voltage output and long cyclic stability, in stark contrast to their counterpart based on transferred graphene, demonstrating its potential for emerging energy harvesting applications. The work presented here offers a promising solution to organize the metal catalytic booster toward the transfer-free synthesis of high-quality graphene and enable smart energy generation.

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