An electroanalytical application of 2-aminothiazole-modified silica gel after adsorption and separation of Hg (II) from heavy metals in aqueous solution

NL Dias Filho, DR do Carmo, AH Rosa - Electrochimica Acta, 2006 - Elsevier
2-Aminothiazole covalently attached to a silica gel surface was prepared in order to obtain
an adsorbent for Hg (II) ions having the following characteristics: good sorption capacity …

[HTML][HTML] Temperature effect on the dynamic adsorption of anionic surfactants and alkalis to silica surfaces

M Masulli, ZL Liu, FZ Guo, X Li, EJR Sudhölter… - Petroleum Science, 2022 - Elsevier
Chemical loss such as surfactants and alkalis by adsorption to reservoir rock surface is an
important issue in enhanced oil recovery (EOR). Here, we investigated the adsorption …

Selective sorption of mercury (II) from aqueous solution with an organically modified clay and its electroanalytical application

NLD Filho, DR Carmo, AH Rosa - Separation science and …, 2006 - Taylor & Francis
The organo‐clay used in this work was prepared from a Na‐montmorillonite (Wyoming‐USA
deposit) by treatment with water solution of hexadecyltrimethylammonium cations. As …

Tribological and Mechanochemical Properties of Nanoparticle-Filled Polytetrafluoroethylene Composites under Different Loads

W Lv, T Wang, Q Wang, KK Yap, F Song, C Wang - Polymers, 2024 - mdpi.com
For the tribological properties of nanoparticle-modified PTFE, a more comprehensive study
has been conducted, but there is still some room for research on tribology behavior, tribofilm …

Investigation about the copper adsorption on the chloropropylsilica gel surface modified with a nanostructured dendrimer DAB-Am-16: an analytical application for …

DR Carmo, LL Paim - Materials Research, 2013 - SciELO Brasil
The third generation (G-3) poly (propyleneimine) hexadecaamine dendrimer (DAB-Am-16)
was grafted onto the chloropropylsilica gel surface (DPPIPS). The modified silica (DPPIPS) …

Atmospheric pressure air plasma treated alumina powder for ceramic sintering

Z Szalay, K Bodišová, H Pálková, P Švančárek… - Ceramics …, 2014 - Elsevier
We report on plasma surface treatment of sub-micron alumina powder by the Diffuse
Coplanar Surface Barrier Discharge (DCSBD) in ambient air. Even though the isoelectric …

Adsorption of transition-metal ions in ethanol solution by a nanomaterial based on modified silsesquioxane

NL Dias Filho, RM Costa, F Marangoni - Colloids and Surfaces A …, 2008 - Elsevier
The material octakis [3-(3-amino-1, 2, 4-triazole) propyl] octasilsesquioxane (ATZ-SSQ) was
synthesized and its potential was assessed for Cu (II), Ni (II), Co (II), Zn (II) and Fe (III) from …

Epoxy‐silanization–tool for improvement of silica nanoparticles as support for lipase immobilization with respect to esterification activity

K Banjanac, M Mihailović, N Prlainović… - Journal of Chemical …, 2016 - Wiley Online Library
BACKGROUND In this study, in order to obtain the best support for the immobilization of
lipase from Candida rugosa (CRL), the procedure for chemical modification of fumed silica …

Study on soluble heavy metals with preconcentration by using a new modified oligosilsesquioxane sorbent

EG Vieira, IV Soares, NL Dias Filho, NC da Silva… - Journal of Hazardous …, 2012 - Elsevier
In this work, a new modified oligosilsesquioxane was prepared, characterized and
evaluated for its heavy metal adsorption characteristics from aqueous solution. The material …

Interplay Between Ni and Brønsted and Lewis Acid Sites in the Hydrodesulfurization of Dibenzothiophene

R Valderrama‐Zapata, JT García‐Sánchez… - …, 2024 - Wiley Online Library
Abstract Ni‐MoS2/γ‐Al2O3 catalysts are commonly used in hydrotreating to enhance fossil
fuel quality. The extensive research on these catalysts reveals a gap in understanding the …