نتایج جستجو برای: teller bet

تعداد نتایج: 12557  

Journal: :Oriental journal of chemistry 2023

A polyaniline-mixed metal (Fe-Mn-Zn) oxide (PANFMZO) nanocomposite adsorbent is synthesized and characterized by FTIR, SEM, SEM/EDX Brunauer–Emmett–Teller (BET) analysis. Efficiency of PANFMZO as for removal Cu(II) ions from aqueous matrices analysed. The parameters like change in amount adsorbent, contact time, pH initial ion concentration are studied 69.20% test solution achieved. maximum ads...

Journal: :AIP Advances 2021

Metal–organic frameworks have been a new type of adsorbent in environmental remediation due to their simple preparation processes and stable chemical properties water. However, they are limited by low adsorption capacities some organic pollutants. Herein, ZIF-67 nanoparticles with high Brunauer, Emmett Teller (BET) surface area were designed successfully synthesized time-saving, cost, environme...

Journal: :ACS omega 2023

A SO3H-functionalized epoxy-immobilized Fe3O4 core–shell magnetic nanocatalyst was prepared through a simple three-step procedure, and it identified by various analyses such as Fourier transform infrared (FT-IR) spectroscopy, scanning electron microscopy (SEM), differential thermal gravity (DTG), Brunauer–Emmett–Teller (BET) analysis, transmission (TEM), energy-dispersive X-ray spectroscopy (ED...

Journal: :Environment and Natural Resources Journal 2021

Mangosteen peel can be used as an activated carbon precursor because of its high lignin content and hardness. In this study, mangosteen (MP-AC) was prepared by a physical activation method using CO2 at 850°C. The Brunauer-Emmett-Teller (BET) analysis to assess the optimal time identify largest surface area. properties MP-AC were characterized SEM-EDS FTIR analyses. results showed that obtained ...

Journal: :health scope 0
saeed dehestani athar environmental and occupational health engineering department, faculty of medical sciences, tarbiatmooeswwsuowws{}}y, ir iran +98-2182883825, asilia_h@ modares.ac.ir hasan asilian environmental and occupational health engineering department, faculty of medical sciences, tarbiatmooeswwsuowws{}}y, ir iran +98-2182883825, asilia_h@ modares.ac.ir; environmental and occupational health engineering department, faculty of medical sciences, tarbiatmooeswwsuowws{}}y, ir iran +98-2182883825, asilia_h@ modares.ac.ir

background diatomite coated by nanoparticles of copper and zinc mixed oxides were used to investigate catalytic oxidation of carbon monoxide. objectives aim of this paper was to investigatediatomite performance as a supporting host to confine the cuo and zno nanoparticles and its catalytic activity for carbon monoxide oxidation. materials and methods the prepared catalysts were characterized by...

2016
Surya Narayana Maddila Suresh Maddila Werner E. van Zyl Sreekantha B. Jonnalagadda

We designed a ceria-vanadia/silica (Ce-V/SiO2) heterogeneous catalyst and used it for the green and efficient synthesis of 2-amino-3-cyano-4H-pyran derivatives. The green reaction was a multicomponent one-pot condensation of 5,5-dimethylcyclohexane-1,3-dione, aromatic aldehyde, and malononitrile in an eco-compatible solvent (ethanol). The catalyst was synthesized and fully characterized by powd...

Journal: :Small 2017
Juan-Ding Xiao Hai-Long Jiang

Porous nanostructured materials are demonstrated to be very promising in catalysis due to their well accessible active sites. Thermally stable metal-organic frameworks (MOFs) as hard templates are successfully utilized to afford porous metal oxides and subsequently metal sulfides by a nanocasting method. The resultant metal oxides/sulfides show considerable Brunauer-Emmett-Teller (BET) surface ...

Journal: :Chemphyschem : a European journal of chemical physics and physical chemistry 2012
Frédéric Hasché Mehtap Oezaslan Peter Strasser

Fundamental understanding about the thermal stability of nanoparticles and deliberate control of structural and morphological changes under reactive conditions is of general importance for a wide range of reaction processes in heterogeneous and electrochemical catalysis. Herein, we present a parametric study of the thermal stability of carbon-supported Pt nanoparticles at 80 °C and 160 °C, with...

2012
Nabakumar Pramanik Sudip Chakraborty

The present research attempt consists in the development of mesoporous hydroxyapatite using inexpensive ingredients using cetyltrimethylammonium bromide (CTAB) as template through a chemical-based hydrothermal method. Wide angle X-ray diffraction (XRD) reveals the formation of pure single-phased hydroxyapatite particles. Fourier transform infrared absorption spectroscopy (FTIR) and electron dif...

Journal: :Nanoscale 2015
Yuhua Xue Janice M Baek Hao Chen Jia Qu Liming Dai

Nitrogen-doped graphene nanoribbons (N-GNRs) were prepared by thermal treatment of the as-zipped graphene oxide nanoribbons in NH3 gas. X-ray photoelectron spectroscopy (XPS) measurements revealed a high nitrogen content up to 6.5 atom% for the as-prepared N-GNRs. This, together with the high Brunauer-Emmett-Teller (BET) surface area of about 751 cm(2) g(-1), prompted us to use the N-GNR as the...

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