Concept

Phénolphtaléine

Publications associées (11)

Photo-Fenton inactivation of MS2 bacteriophage at alkaline pH by Fe salts or nm to μm-sized oxides, and the Janus-faced effects of natural organic matter in surface waters

César Pulgarin, Stefanos Giannakis, Giulio Farinelli, Ogadimma Cassandra Oji-Okoro

In this study, MS2 bacteriophage was inactivated by homogeneous and heterogeneous photo-Fenton processes in an alkaline matrix (pH 8) using low concentrations of H2O2 and iron forms (1 mg/L), including Fe(II), Fe(III), and Fe (hydr)oxides. As a reference, ...

Elsevier2024

MXene Inks for High-Throughput Printing of Electronics

Jakob Heier, René Uwe Schneider, Sina Abdolhosseinzadeh, Mohammad Jafarpour

MXene inks are promising alternatives for conventional conductive inks in printing electronics. However, the formulation of MXene inks is challenging due to the physicochemical properties of the few solvents in which MXenes can be dispersed. Furthermore, c ...

Wiley2024

Driving electrochemical reactions at the microscale using CMOS microelectrode arrays

Nako Nakatsuka, Xinyu Zhang, Csaba Forro, Benjamin Simona

Precise control of pH values at electrode interfaces enables the systematic investigation of pH-dependent processes by electrochemical means. In this work, we employed high-density complementary metal-oxide-semiconductor (CMOS) microelectrode arrays (MEAs) ...

2023

Inactivation of bacteriophage MS2 with potassium ferrate(VI)

Tamar Kohn, Anne Thérèse Sigstam, Timothy Strathmann

Abstract - Ferrate [Fe(VI); FeO42-] is an emerging oxidizing agent capable of controlling chemical and microbial water contaminants. Here, inactivation of MS2 coliphage by Fe(VI) was examined. The inactivation kinetics observed in individual batch experime ...

Amer Chemical Soc2012

Photocatalytic discoloration of aqueous malachite green solutions by UV-illuminated TiO2 nanoparticles under air and nitrogen atmospheres: effects of counter-ions and pH

César Pulgarin, Christophe Roussel

Under air atmosphere, the photocatalytic discoloration of malachite green (MG) aqueous solutions (a triphenylmethane dye) in the presence of TiO2 and UV light followed an oxidative pathway, involving an N-demethylation process evidenced by a blue shifting ...

2011

Influence of pH on dehalorespiring consortia & first steps in the development of a methodology for acid neutralization in enhanced in situ bioremediation

Nicole Munz

Enhanced in situ bioremediation of chlorinated solvents is, especially in source zone remediation, often limited through the accompanied high acidification of groundwater. This acid built-up originating from the dechlorination itself and fermentation produ ...

2010

Localizable and highly sensitive calcium indicator based on a BODIPY fluorophore

Kai Johnsson, Mako Kamiya

We introduce here a new class of BODIPY-based Ca2+ indicators which can be derivatized with biological ligands that permit the localization of the indicators in living cells. The underivatized BODIPY-based Ca2+ indicator (BOCA-1) shows a 250-fold increase ...

American Chemical Society2010

Durability of aminosilane-silica hybrid gas-barrier coatings on polymers

Yves Leterrier, Bandeep Singh, Gil Rochat

Aminosilane solutions with pH equal to 8 and to 11 were applied and cured on SiO2 coated poly(ethylene terephthalate) (PET) films. The permeability of the silane-silica hybrid coating on PET was reduced twofold compared to that of the SiO2/PET film, at sol ...

2007

Chlorination of phenols: Kinetics and formation of chloroform

Urs von Gunten

The kinetics of chlorination of several phenolic compounds and the corresponding formation of chloroform were investigated at room temperature. For the chlorination of phenolic compounds, second-order kinetics was observed, first-order in chlorine, and fir ...

2002

Chlorination of natural organic matter: kinetics of chlorination and of THM formation

Urs von Gunten

The kinetics of the formation of trihalomethanes (THMs) and of chlorine consumption for the chlorination of natural organic matter with an excess of chlorine (50 muM > Cl-2 > 210 muM) was investigated. THM precursors could be divided into a fast and a ...

2002

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