Publications related to Surface active poly(ethylene glycol) (PEG) catechol derivatives on metal oxide surfaces: influence of pH, pKa and isoelectric point on adsorption kinetics and adlayer stability

Related publications (23)

Additive manufacturing of flexible, biodegradable drug implants for sustained multi-drug release into the cochlea

Sensorineural hearing loss is a profound form of deafness, arising from damage to cochlear hair cells, which can be treated by limited clinical options such as cochlear implants. However, the implantation procedure carries the inherent risk of electrode in ...

2025

Precious Metals recovery using novel metal-organic framework (MOF)

Jocelyn Richard Roth

Gold plays a dominant role in our modern society. Initially used in coinage and jewelry, it has become an essential metal for the electronics industries. Today, more gold is consumed than mined from virgin ores. Therefore, gold recycling methods have becom ...

EPFL2025

Computer Simulation of the Surface of Aqueous Ionic and Surfactant Solutions

Mária Lbadaoui-Darvas

The surface of aqueous solutions of simple salts was not the main focus of scientific attention for a long while. Considerable interest in studying such systems has only emerged in the past two decades, following the pioneering finding that large halide io ...

AMER CHEMICAL SOC2022

Tandem effect of Ag@C@Cu catalysts enhances ethanol selectivity for electrochemical CO2 reduction in flow reactors

Andreas Züttel, Wen Luo, Liping Zhong, Thi Ha My Pham, Mo Li, Jie Zhang, Youngdon Ko, Cedric David Koolen

CO-selective metals (e.g., Ag) on Cu catalysts improve the selec-tivity of multi-carbon (C2+) products in electrochemical CO2 reduc-tion. However, the origin of the improvement remains unclear due to the convolution of tandem and interface effects. Here, A ...

ELSEVIER2022

New Insights into the Interface of Electrochemical Flow Cells for Carbon Dioxide Reduction to Ethylene

Michael Graetzel, Shaik Mohammed Zakeeruddin, Dan Ren, Jing Gao

The implementation of an electrochemical flow cell has enabled improved efficiency for CO2 reduction. However, in situ spectroscopic insights into the interface are still lacking. Here, we investigate a series of copper layers with different thicknesses on ...

AMER CHEMICAL SOC2021

Silica-copper catalyst interfaces enable carbon-carbon coupling towards ethylene electrosynthesis

Michael Graetzel, Dan Ren, Yelin Hu, Jun Li, Reza Zamani

Membrane electrode assembly (MEA) electrolyzers offer a means to scale up CO2-to-ethylene electroconversion using renewable electricity and close the anthropogenic carbon cycle. To date, excessive CO2 coverage at the catalyst surface with limited active si ...

Nature Research2021

Super adsorption performance of carboxymethyl cellulose/copper oxide-nickel oxide nanocomposite toward the removal of organic and inorganic pollutants

Shaik Mohammed Zakeeruddin

A novel nanocomposite bead based on polymeric matrix of carboxymethyl cellulose and copper oxide-nickel oxide nanoparticles was synthesized, characterized, and applied for adsorptive removal of inorganic and organic contaminants at trace level of part per ...

SPRINGER HEIDELBERG2021

Polymethylene Brushes via Surface-Initiated C1 Polyhomologation

Harm-Anton Klok, Sophia Thiele, Feng Li

Surface-initiated polymerization reactions are a powerful tool to generate chain-end-tethered polymer brushes. This report presents a synthetic strategy that gives access to structurally well-defined hydrocarbon polymer brushes of controlled molecular weig ...

AMER CHEMICAL SOC2021

Hybrid granular hydrogels: combining composites and microgels for extended ranges of material properties

Dominique Pioletti, Pierre-Etienne Bourban, Peyman Karami, Céline Samira Wyss

Developing hydrogels with optimal properties for specific applications is challenging as most of these properties, such as toughness, stiffness, swelling or deformability, are interrelated. The improvement of one property usually comes at the cost of anoth ...

2020

Ultraviolet Functionalization of Electrospun Scaffolds to Activate Fibrous Runways for Targeting Cell Adhesion

Silvestro Micera

A critical challenge in scaffold design for tissue engineering is recapitulating the complex biochemical patterns that regulate cell behavior in vivo. In this work, we report the adaptation of a standard sterilization methodology-UV irradiation-for pattern ...

2019

Crosslinking Allosteric Sites on the Nucleosome Core Particle

Lucinda Kate Batchelor

Designing compounds that bind to the acidic patch of the nucleosome core particle (NCP) is an emerging therapeutic approach that can inhibit the binding of key chromatin factors. Pretreatment of human ovarian carcinoma, A2780, cells with RAPTA-T, an antime ...

EPFL2019

In situ Control of the Adsorption Species in CO2 Hydrogenation: Determination of Intermediates and Byproducts

Andreas Züttel, Ligang Wang, Kun Zhao, Emanuele Moioli, Marco Calizzi

CO2 hydrogenation over catalysts is a potentially exciting method to produce fuels while closing the CO2 cycle and mitigating global warming. The mechanism of this process has been controversial due to the difficulty in clearly identifying the species pres ...

2018

Design of Surface-Supported Bio-inspired Networks for CO2 and O2 Activation at Room Temperature

Daniel Eduardo Hurtado Salinas

The structure of a biological system defines its function. Therefore, nature has developed sophisticated systems that catalyze chemical reactions that are vital for life on earth. For instance, the photosynthesis is a biological process that is partially r ...

EPFL2018

Photo-polymerization, swelling and mechanical properties of cellulose fibre reinforced poly(ethylene glycol) hydrogels

Jan-Anders Edvin Maansson, Dominique Pioletti, Pierre-Etienne Bourban, Andreas Schmocker, Azadeh Khoushabi

The application of hydrogels as load-bearing biomedical components is often limited by their mechanical properties. Often an attempt to improve a hydrogel's stiffness is accompanied by a loss of toughness and swelling properties. In this work, we show that ...

Elsevier Sci Ltd2015

Crystalline Oligo(ethylene sulfide) Domains Define Highly Stable Supramolecular Block Copolymer Assemblies

Jeffrey Alan Hubbell, Davide Demurtas, Edward Allen Phelps

With proper control over copolymer design and solvation conditions, self-assembled materials display impressive morphological variety that encompasses nanoscale colloids as well as bulk three-dimensional architectures. Here we take advantage of both hydrop ...

Amer Chemical Soc2015

Diffusion and adsorption of dye molecules in mesoporous TiO2 photoelectrodes studied by indirect nanoplasmonic sensing

Michael Graetzel, Leo-Philipp Heiniger

In this study, we used Hidden Interface-Indirect Nanoplasmonic Sensing (HI-INPS) for real time monitoring of dye impregnation (adsorption-diffusion process) of mesoporous TiO2 electrodes of the kind used in dye-sensitized solar cells. We measured the dye p ...

Royal Society of Chemistry2013

Photoinactivation of virus on iron-oxide coated sand: enhancing inactivation in sunlit waters

Tamar Kohn, Brian Pecson, Loïc Decrey

Adsorption onto iron oxides can enhance the removal of waterborne viruses in constructed wetlands and soils. If reversible adsorption is not coupled with inactivation, however, infective viruses may be released when changes in solution conditions cause des ...

Elsevier2012

(Y0.5Lu0.5)2O3:Eu3+ nanopowders: Combustion synthesis, structure and optical properties

Barbora Bártová

In this work we explored the possibility of obtaining nanocrystalline (Y0.5Lu0.5)2O3 powders, doped with europium and co-doped with praseodium, employing polymer complex solution synthesis. Polyethylene glycol, with average molecular weight 200, served bot ...

2010

Hybrid Polymer Therapeutics Incorporating Bioresponsive, Coiled Coil Peptide Linkers

Bojana Portmann

Nanopharmaceuticals or nanomedicines are defined as nanometer sized (1 to 1000 nm) complex systems, consisting of at least two components, one of which being the biologically active moiety such as a drug, peptide, protein or nucleotide. Several nano-sized ...

EPFL2010

Biomolecular Diffusion in Nanofluidics

Nicolas Durand

Imagine a small integrated biomedical analysis laboratory, connected to your home computer, which would be capable of diagnosing illnesses, a lack of vitamins, or the over-presence of substances from samples of blood, urine or saliva. This hypothetic syste ...

EPFL2010