نتایج جستجو برای: synergistic catalytic effect

تعداد نتایج: 1733227  

Journal: :Chemical communications 2013
Ya Yan Baoyu Xia Xiaoying Qi Haibo Wang Rong Xu Jing-Yuan Wang Hua Zhang Xin Wang

A novel electrocatalyst of layered MoS2 supported on reduced graphene oxide (RGO) decorated with nano-sized tungsten carbide (WC) shows an enhanced catalytic performance in the hydrogen evolution reaction, which could be attributed to the presence of a conductive and electrocatalytically-active nano-WC dispersant and the positive synergistic effect between nano-WC/RGO and layered MoS2.

Journal: :Chemical communications 2008
Jitendra N Tiwari Fu-Ming Pan Rajanish N Tiwari S K Nandi

A two-dimensional continuous Pt island network was successfully synthesized by pulse-potentiostatic electrodeposition on a flat silicon substrate, which showed markedly enhanced catalytic activity toward methanol electrooxidation and high CO tolerance, probably due to the synergistic effect of the Pt island catalyst and surrounding SiO(2) surface layer.

Journal: :analytical and bioanalytical chemistry research 0
ramin m.a.tehrani department of chemistry, yadegar imam khomeini (rah), islamic azad university hanieh ghadimi department of chemistry, faculty of science, university of malaya, 50603 kualalumpur, malaysia. department of chemistry, the university of akron, akron, oh 44325-3601, usa

this study demonstrates the use of a selective and sensitive voltammetric sensor for determination of acetaminophen (ac). this was  performed by modifying a glassy carbon electrode with composite film of poly(4-vinylpyridine) and graphene sheet (p4vp/gr-gce). the redox peak currents of ac increased significantly at p4vp/gr-gce. the result was achieved by the synergistic effect of combined elect...

Journal: :Chemical communications 2015
Jinquan Wang Waihong Sng Guangshun Yi Yugen Zhang

A new type of imidazolium salt-modified porous hypercrosslinked polymer (BET surface area up to 926 m(2) g(-1)) was reported. These porous materials exhibited good CO2 capture capacities (14.5 wt%) and catalytic activities for the conversion of CO2 into various cyclic carbonates under metal-free conditions. The synergistic effect of CO2 capture and conversion was observed.

2016
Zhiguo Xie Xiaoxia Zhou Huixia Wu Lisong Chen Han Zhao Yan Liu Linyu Pan Hangrong Chen

A series of CuBi co-doped mesoporous zeolite Beta (CuxBiy-mBeta) were prepared by a facile one-pot hydrothermal treatment approach and were characterized by XRD, N2 adsorption-desorption, TEM/SEM, XPS, H2-TPR, NH3-TPD and in situ DRIFTS. The catalysts CuxBiy-mBeta were applied to the removal of NOx by selective catalytic reduction with ammonia (NH3-SCR), especially the optimized Cu1Bi1-mBeta ac...

Journal: :iranian journal of chemistry and chemical engineering (ijcce) 1995
mojtaba shamsipur mir fazlollah mousavi

a simple, rapid and sensitive method has been developed for determination of trances of tellurium (vi) (0.096-1.250 mg/ml) based on its catalytic effect on the reduction reaction of toluidine blue by sulfide ion at ph 4. the reaction is monitored spectrophotometrically by measuring the decrease in absorbance of the dyestuff at 628 nm by the fixed time method. the detection limit is 80 ng/ml and...

2014
Kai-Chih Hsu Dong-Hwang Chen

A nanocomposite of silver nanoparticles and reduced graphene oxide (Ag/rGO) has been developed as a catalyst for the reduction of 4-nitrophenol (4-NP) to 4-aminophenol (4-AP) with sodium borohydride, owing to the larger specific surface area and synergistic effect of rGO. A facile and rapid microwave-assisted green route has been used for the uniform deposition of Ag nanoparticles and the reduc...

باقری, مرضیه, روشنایی, قدرت الله, شکوهی, رضا, صید محمدی, عبدالمطلب, عسگری, قربان,

Background and purpose: Using catalysts to enhance the efficiency of the ozonation process (known as catalytic ozonation process) has received much attention in recent years. This study aimed at examining the overall feasibility of using catalysts ozone as catalyst in ozonation process for decolorization and mineralization of a real textile wastewater in presence of persulfate. Materials and...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه سیستان و بلوچستان 1390

a one dimensional dynamic model for a riser reactor in a fluidized bed catalytic cracking unit (fccu) for gasoil feed has been developed in two distinct conditions, one for industrial fccu and another for fccu using various frequencies of microwave energy spaced at the height of the riser reactor (fccu-mw). in addition, in order to increase the accuracy of component and bulk diffusion, instanta...

Journal: :Advanced Functional Materials 2021

In article number 2009241, Docheon Ahn, Pil Kim, Sung Jong Yoo, and co-workers synthesize monolithic antiperovskite crystals through atomic-scale engineering. The nitride PdNi alloy achieves excellent catalytic activity durability under acidic media, resulting from the synergistic effect of intermetallic structures. This strategy will pave way for overcoming performance potential materials.

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