نتایج جستجو برای: coated nanoparticles

تعداد نتایج: 149038  

Introduction: Protection against harmful effects of ultraviolet radiation (UV) is measured under Ultraviolet Protection Factor (UPF) scale. The utilization of protective clothing is the best way to deal with the damage caused by ultraviolet radiation. The purpose of this study was to compare the ultraviolet ray protective factor of pure cotton and cotton coated with ti...

Journal: :Journal of the American Chemical Society 2008
Francisco J Ibañez Francis P Zamborini

Hydrogen gas spontaneously adsorbs to Pd metal as atomic hydrogen and diffuses into the lattice to form PdHx. We previously showed that films of hexanethiolate-coated Pd monolayer-protected clusters (MPCs) do not readily react with H2 due to the strong chemical bonding of the thiolate to the Pd, which inhibits the reaction. Consequently, these films require ozone or heat treatment for reactivit...

Journal: :Chemical communications 2006
Hacgyu Lim Jinwoo Lee Sunmi Jin Jaeyun Kim Jeyong Yoon Taeghwan Hyeon

A highly active heterogeneous Fenton catalyst was fabricated by impregnating iron oxide nanoparticles in alumina coated mesoporous SBA-15 silica.

Journal: :Chemical communications 2010
Eun Jin Cho Sera Jung Kwangho Lee Hong Joo Lee Kye Chun Nam Hyeun-Jong Bae

The histidine-tagged protein binding capacity and purification efficiencies of TSMNPs (terpyridine receptor-immobilized silica-coated magnetic nanoparticles) is described.

Journal: :Environmental toxicology and chemistry 2010
H Joel Allen Christopher A Impellitteri Dana A Macke J Lee Heckman Helen C Poynton James M Lazorchak Shekar Govindaswamy Deborah L Roose Mallikarjuna N Nadagouda

Relatively little is known about the behavior and toxicity of nanoparticles in the environment. Objectives of work presented here include establishing the toxicity of a variety of silver nanoparticles (AgNPs) to Daphnia magna neonates, assessing the applicability of a commonly used bioassay for testing AgNPs, and determining the advantages and disadvantages of multiple characterization techniqu...

2012
Eric R Waclawik Jin Chang Andrea Ponzoni Isabella Concina Dario Zappa Elisabetta Comini Nunzio Motta Guido Faglia Giorgio Sberveglieri

Surface coating with an organic self-assembled monolayer (SAM) can enhance surface reactions or the absorption of specific gases and hence improve the response of a metal oxide (MOx) sensor toward particular target gases in the environment. In this study the effect of an adsorbed organic layer on the dynamic response of zinc oxide nanowire gas sensors was investigated. The effect of ZnO surface...

Journal: Pollution 2019

The present study synthesizes a novel adsorbent by coating Fe3O4 magnetic nanoparticles with amino functionalized mesoporous silica. The FTIR spectrums indicate that silica has been successfully coated on the surface of Fe3O4 and 3-aminopropyl tri methoxysilane compound have been grafted to the surface of silica-coated Fe3O4. The XRD analysis shows the presence of magnetite phase with cubic spi...

2012
Carmen Chifiriuc Valentina Grumezescu Alexandru Mihai Grumezescu Crina Saviuc Veronica Lazăr Ecaterina Andronescu

Biofilms formed by fungal organisms are associated with drastically enhanced resistance against most antimicrobial agents, contributing to the persistence of the fungi despite antifungal therapy. The purpose of this study is to combine the unique properties of nanoparticles with the antimicrobial activity of the Rosmarinus officinalis essential oil in order to obtain a nanobiosystem that could ...

2011
Stefanie Wohlfart Alexander S. Khalansky Svetlana Gelperina Olga Maksimenko Christian Bernreuther Markus Glatzel Jörg Kreuter

BACKGROUND Chemotherapy of glioblastoma is largely ineffective as the blood-brain barrier (BBB) prevents entry of most anticancer agents into the brain. For an efficient treatment of glioblastomas it is necessary to deliver anti-cancer drugs across the intact BBB. Poly(lactic-co-glycolic acid) (PLGA) nanoparticles coated with poloxamer 188 hold great promise as drug carriers for brain delivery ...

Journal: :Chemical communications 2015
Sungah Kang Jiseul Chun Nojin Park Sang Moon Lee Hae Jin Kim Seung Uk Son

ZSM-5 nanoparticles coated with microporous organic polymers showed 88% retention of ammonia adsorption capacity at 43% RH.

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