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Raffaella Buonsanti

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Related publications (77)

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Copper-Phosphonate Lamella Intermediates Control the Shape of Colloidal Copper Nanocrystals

Raffaella Buonsanti, Jan Vávra, Dragos-Constantin Stoian, Valeria Mantella, Petru Pasquale Albertini, James Richard Pankhurst

Understanding the structure and behavior of intermediates in chemical reactions is key to developing greater control over the reaction outcome. This principle is particularly important in the synthesis of metal nanocrystals (NCs), where the reduction, nucl ...

2022

Hybrid oxide coatings generate stable Cu catalysts for CO2 electroreduction

Min Wang, Raffaella Buonsanti, Emad Oveisi, Anna Loiudice, Petru Pasquale Albertini, Ona Segura Lecina, Philippe Benjamin Green, Mark Adrian Newton

Hybrid organic/inorganic materials have contributed to solve important challenges in different areas of science. One of the biggest challenges for a more sustainable society is to have active and stable catalysts that enable the transition from fossil fuel ...

Nature Portfolio2024

Understanding the Formation Mechanism of Metal Nanocrystal@MOF-74 Hybrids

Raffaella Buonsanti, Wendy Lee Queen, Anna Loiudice, Daniel Teav Sun

We report a one-step synthetic strategy to encapsulate copper nanocrystals (Cu NCs) in a carboxylate-based metal organic framework (MOF-74) to construct Cu@Cu-MOF-74 hybrids. One of the hurdles to realizing metal NC@MOF hybrids with uniform morphology and ...

Amer Chemical Soc2016

Quantitative 3D determination of self-assembled structures on nanoparticles using small angle neutron scattering

Francesco Stellacci, Raffaella Buonsanti, Anna Loiudice, Quy Ong Khac, Zhi Luo

2018

Tailoring Copper Nanocrystals towards C-2 Products in Electrochemical CO2 Reduction

Raffaella Buonsanti, Anna Loiudice

Favoring the CO2 reduction reaction (CO2RR) over the hydrogen evolution reaction and controlling the selectivity towards multicarbon products are currently major scientific challenges in sustainable energy research. It is known that the morphology of the c ...

Wiley-Blackwell2016

The native oxide skin of liquid metal Ga nanoparticles prevents their rapid coalescence during electrocatalysis

Raffaella Buonsanti, Anna Loiudice, Laia Castilla Amorós, Jan Vávra, Dragos-Constantin Stoian, Valery Okatenko

Liquid metals (LMs) have been used in electrochemistry since the 19th century, but it is only recently that they have emerged as electrocatalysts with unique properties, such as inherent resistance to coke-poisoning, which derives from the dynamic nature o ...

2022

Synthetic Tunability of Colloidal Covalent Organic Framework/Nanocrystal Hybrids

Raffaella Buonsanti, Jan Vávra, Vikram Vinayak Karve, Chethana Janardhana Gadiyar, Ona Segura Lecina, Seyedehbehnaz Varandili, Yannick Thomas Guntern

The combination of porous reticular frameworks and nanocrystals (NCs) offers a rich playground to design materials with functionalities, which are beneficial for a large variety of applications. Achieving compositional and structural tunability of these hy ...

2021

Stability and Degradation Mechanisms of Copper-Based Catalysts for Electrochemical CO2 Reduction

Raffaella Buonsanti, Jan Vávra

To date, copper is the only monometallic catalyst that can electrochemically reduce CO2 into high value and energy-dense products, such as hydrocarbons and alcohols. In recent years, great efforts have been directed towards understanding how its nanoscale ...

Wiley-VCH Verlag GmbH2020

2022 roadmap on low temperature electrochemical CO2 reduction

Sophia Haussener, Raffaella Buonsanti, Ludmilla Steier, Etienne Boutin

Electrochemical CO2 reduction (CO2R) is an attractive option for storing renewable electricity and for the sustainable production of valuable chemicals and fuels. In this roadmap, we review recent progress in fundamental understanding, catalyst development ...

IOP Publishing Ltd2022

Colloidal Nanocrystals as Electrocatalysts with Tunable Activity and Selectivity

Raffaella Buonsanti, Jan Vávra, Dragos-Constantin Stoian, Valery Okatenko, Cedric David Koolen, Pranit Srinivas Iyengar, James Richard Pankhurst, Seyedehbehnaz Varandili

Correlating the catalyst activity, selectivity, and stability with its structure and composition is of the utmost importance in advancing the knowledge of heterogeneous electrocatalytic processes for chemical energy conversion. Well-defined colloidal nanoc ...

2021

Elucidating the Facet-Dependent Selectivity for CO2 Electroreduction to Ethanol of Cu-Ag Tandem Catalysts

Raffaella Buonsanti, Pranit Srinivas Iyengar

Despite being desirable high-value products of the electro-chemical CO2 reduction reaction (CO2RR), alcohols are still obtained with lower selectivity compared to hydrocarbons and the reaction pathways leading to their formation are still under debate. In ...

2021

Investigation of Ethylene and Propylene Production from CO2 Reduction over Copper Nanocubes in an MEA-Type Electrolyzer

Raffaella Buonsanti, Valery Okatenko

Previous work carried out in fully liquid environ-ments and at low current densities has demonstrated that highly uniform faceted copper nanocrystals display different selectivity profiles in CO2 reduction compared to polycrystalline copper. As part of ong ...

AMER CHEMICAL SOC2022

Tunable Metal Oxide Shell as a Spacer to Study Energy Transfer in Semiconductor Nanocrystals

Raffaella Buonsanti, Anna Loiudice, Seryio Saris

Colloidal semiconductor nanocrystals (NCs) are promising components in various optoelectronic and photocatalytic devices; however, the mechanism of energy transport in these materials remains to be further understood. Here, we investigate the distance depe ...

2020

Developing the Chemistry of Colloidal Cu Nanocrystals to Advance the CO2 Electrochemical Reduction

Raffaella Buonsanti

The ability to tailor make materials with atomic scale precision is crucial for understanding the sensitivities of their performance parameters and for achieving the design specification corresponding to optimal device operation. Herein, this topic is disc ...

SWISS CHEMICAL SOC2021

Magic clusters are better together

Raffaella Buonsanti

Hybrid materials constructed from the assembly of inorganic building blocks and organic linkers have shown unique properties and applications. Superstructures of semiconductor magic-sized nanoclusters linked by diamines now join this class of materials. ...

NATURE RESEARCH2021

Increasing Precursor Reactivity Enables Continuous Tunability of Copper Nanocrystals from Single-Crystalline to Twinned and Stacking Fault-Lined

Noah Isaac Bussell, Raffaella Buonsanti, Anna Loiudice, Petru Pasquale Albertini, Jari Leemans, Coline Marie Agathe Boulanger, Krishna Kumar, Ludovic Emile Frédy Zaza

Colloidal nanocrystals (NCs) are active materials in different applications, wherein their shape dictates their properties, such as optical or catalytic properties, and, thus, their performance. Hence, learning to tune the NC shape is an important goal in ...

2024

Nanocrystals as Precursors in Solid-State Reactions for Size- and Shape-Controlled Polyelemental Nanomaterials

Raffaella Buonsanti, Emad Oveisi, Anna Loiudice, Laia Castilla Amorós, Dragos-Constantin Stoian, Valeria Mantella, Chethana Janardhana Gadiyar, Pranit Srinivas Iyengar

Solid-state reactions between micrometer-size powders are among the oldest, simplest, and still widely used methods for the fabrication of inorganic solids. These reactions are intrinsically slow because, although the precursorsare "well mixed" at the macr ...

AMER CHEMICAL SOC2020

Dual-Facet Mechanism in Copper Nanocubes for Electrochemical CO2 Reduction into Ethylene

Giulia Mangione, Raffaella Buonsanti, Jianfeng Huang

The product selectivity in the electrochemical reduction of carbon dioxide depends on the structure of the copper electrode. Cube-shaped copper catalysts, enclosed by {100} terraces, {110} edges, and {111} corners, exhibit a size-dependent enhanced only se ...

2019

Sub-micron Polymer-Zeolitic Imidazolate Framework Layered Hybrids via Controlled Chemical Transformation of Naked ZnO Nanocrystal Films

Raffaella Buonsanti, Wendy Lee Queen

Here we show that sub-micron coatings of zeolitic imidazolate frameworks (ZIFs) and even ZIF-ZIF bilayers can be grown directly on polymers of intrinsic microporosity from zinc oxide (ZnO) nanocrystal precursor films, yielding a new class of all-microporou ...

Amer Chemical Soc2015

CsPbBr3 QD/AlOx inorganic nanocomposites with exceptional stability in water, light and heat

Raffaella Buonsanti, Emad Oveisi, Duncan Thomas Lindsay Alexander, Anna Loiudice, Seryio Saris

Herein, the assembly of CsPbBr3 QD/AlOx inorganic nanocomposites, by using atomic layer deposition (ALD) for the growth of the amorphous alumina matrix (AlOx), is described as a novel protection scheme for such QDs. The nucleation and growth of AlOx on the ...

2017