نتایج جستجو برای: graphene oxide decorated with ceo2 nanoparticles

تعداد نتایج: 9350984  

Journal: :Journal of Materials Science: Materials in Electronics 2021

The sustainable production of hydrogen and oxygen through the electrolysis water requires development an efficient electrocatalyst. In this work, we report electrocatalytic activity Pd nanoparticles dispersed on CeO2/N, S-rGO (where N, represents nitrogen sulfur-doped reduced graphene oxide). were synthesized by hydrothermal chemical reduction methods, respectively. Electrochemical measurements...

Journal: :ACS nano 2015
Xiang Xu Hui Li Qiangqiang Zhang Han Hu Zongbin Zhao Jihao Li Jingye Li Yu Qiao Yury Gogotsi

Three-dimensional (3D) graphene aerogels (GA) show promise for applications in supercapacitors, electrode materials, gas sensors, and oil absorption due to their high porosity, mechanical strength, and electrical conductivity. However, the control, actuation, and response properties of graphene aerogels have not been well studied. In this paper, we synthesized 3D graphene aerogels decorated wit...

Journal: :Journal of the American Chemical Society 2011
Rong Kou Yuyan Shao Donghai Mei Zimin Nie Donghai Wang Chongmin Wang Vilayanur V Viswanathan Sehkyu Park Ilhan A Aksay Yuehe Lin Yong Wang Jun Liu

Carbon-supported precious metal catalysts are widely used in heterogeneous catalysis and electrocatalysis, and enhancement of catalyst dispersion and stability by controlling the interfacial structure is highly desired. Here we report a new method to deposit metal oxides and metal nanoparticles on graphene and form stable metal-metal oxide-graphene triple junctions for electrocatalysis applicat...

Journal: :international journal of nano dimension 0
ahmad allahbakhsh department of polymer engineering, south tehran branch, islamic azad university, tehran, iran. farhad sharif department of polymer engineering, amirkabir university of technology, tehran, iran. saeedeh mazinani amirkabir nanotechnology research institute (antri), amirkabir university of technology, tehran, iran. m. r. kalaee 1department of polymer engineering, islamic azad university, south tehran branch, tehran, iran.

in this study, an efficient and facile technique for preparing graphene oxide in suspension and powder forms was presented based on a modification on hummers' method followed by an additional ultrasonic process. the method involved the provision of graphene oxide from graphite by reaction of potassium permanganate and sulfuric acid with stabilizing the medium complex. furthermore, this stu...

Journal: :Applied Clay Science 2023

The deteriorating effect of corrosion can be controlled by applying suitable polymeric-based coatings. In this work, polyolefin based smart composite coatings containing modified halloysite nanotubes decorated with ceria particles were investigated to analyze their anti-corrosion behavior. For purpose, (Hals) utilized as nanocarriers which loaded sodium dodecyl sulfate (SDS) a inhibitor via ove...

Journal: :Nature communications 2012
Chenliang Su Muge Acik Kazuyuki Takai Jiong Lu Si-jia Hao Yi Zheng Pingping Wu Qiaoliang Bao Toshiaki Enoki Yves J Chabal Kian Ping Loh

Graphene oxide, a two-dimensional aromatic scaffold decorated by oxygen-containing functional groups, possesses rich chemical properties and may present a green alternative to precious metal catalysts. Graphene oxide-based carbocatalysis has recently been demonstrated for aerobic oxidative reactions. However, its widespread application is hindered by the need for high catalyst loadings. Here we...

2015
Jakub Tolasz Petr Vomáčka Václav Štengl

Titanium(IV) oxide graphene [1] or graphene oxide nano composite [2] were prepared by one-pot thermal hydrolysis of suspension graphene or graphene oxide nanosheets and titanium oxide in three different forms as a starting materials. Graphene nanosheets were produced in a large quantity from natural graphite using a high intensity cavitation field in a pressurized ultrasonic reactor [3]. The gr...

2013
Josė A. Rodriguez Raul Miranda

Current industrial catalysts for the water-gas shift reaction are commonly mixtures of Fe-Cr and Zn-Al-Cu oxides, used at temperatures between 350-500oC and 180250oC, respectively. These oxide catalysts are pyrophoric and normally require lengthy and complex activation steps before usage. Improved catalysts are being sought, particularly for lower temperature (e.g., at T<150oC, equilibrium lowe...

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