Synthesis of Nanoscale Bimetallic Particles in Polyelectrolyte Membrane Matrix for Reductive Transformation of Halogenated Organic Compounds

Membrane‐based bimetallic nanoparticles for environmental remediation: Synthesis and reactive properties

“…There are two main steps in the preparation of membranes containing metal NPs (Figure 1) [17]: first, the PAA-metal sulfate (pH ϭ 2.0) layer is attached to the surface of PVDF MF membrane by a dip-coating process. PVDF support membranes were already hydrophilized using hydroxy propyl acrylate and tetra ethylene glycol deacrylate [18].…”

Effective Pb2+ removal from water using nanozerovalent iron stored 10 months

“…In the past few years, different methods were developed to synthesize iron nanoparticles (Brumfiel 2003;Hassan 2005;Zhang et al 2015;Su et al 2016), modify their surface properties (Mahfuz and Ahmed 2005;Karlsson et al 2004;Rajajayavel and Ghoshal 2015), and improve their efficiency for field delivery and reactions (Liu et al 2015;Glavee et al 1995;Khalil et al 2004;Xu et al 2005;Zhang et al 1998;Schrick et al 2002;Elliott and Zhang 2001). Extensive investigations reported that nanoscale iron particles are effective for the removal of a wide environmental contaminants such as heavy metal ions like As(III), Pb(II), Cu(II), Ni(II), and Cr(VI), chlorinated organic solvents, organochlorine pesticides, some inorganic compounds (Elliott and Zhang 2001;Liu et al 2005;Alowitz and Scherer 2002;Cao et al 2005;Kanel et al 2005), and organic dyes (Alowitz and Scherer 2002;Cao et al 2005;Kanel et al 2005).…”

Au Nanoparticles in Ionic Liquid Supported on Biopolymeric Films: A Practical Lesson for Investigation of Antimicrobial Activity

“…17 Entretanto, um filme polimérico pode exibir outras vantagens adicionais como um material com maior capacidade de imobilização e seletividade, redução no tamanho de partícula, prevenção da aglomeração das NPs e estabelecimento de uma região de contato poroso entre as fases líquida e gasosa com a estrutura polimérica. 18,19 Recentemente também foi demonstrado que a combinação de NPs metálicas estáveis em líquidos iônicos (LIs) com um filme polimérico de celulose pode gerar um material novo e versátil. 20 Nestas práticas experimentais, nós demonstramos a combinação de NPs de Au sintetizadas em líquido iônico BMI.…”