Search Results

You searched for all publications:

with publication states 'Published (Approved)'

Search Again...

These results only include publications that have been reviewed and processed by Diamond Light Source. To also view papers that have not yet been processed click here.

You can use the folder icon under Actions to collate papers as required. You can then click on View Folder in the left-hand navigation to review and/or download your folder.

Exact matches
Related results

2 items found (0 items not approved), displaying all items.1

Instruments / Technical Area	Publication Details	Published	Actions
B18-Core EXAFS	Blurring the boundary between homogenous and heterogeneous catalysis using palladium nanoclusters with dynamic surfaces Israel Cano , Andreas Weilhard , Carmen Martin , Jose Pinto , Rhys W. Lodge , Ana R. Santos , Graham A. Rance , Elina Harriet Åhlgren , Erlendur Jónsson , Jun Yuan , Ziyou Y. Li , Peter Licence , Andrei N. Khlobystov , Jesum Alves Fernandes Nature Communications 12 DOI: 10.1038/s41467-021-25263-6 Diamond Proposal Number(s): [19850, 17198] Open Access Show Abstract ▼ Abstract: Using a magnetron sputtering approach that allows size-controlled formation of nanoclusters, we have created palladium nanoclusters that combine the features of both heterogeneous and homogeneous catalysts. Here we report the atomic structures and electronic environments of a series of metal nanoclusters in ionic liquids at different stages of formation, leading to the discovery of Pd nanoclusters with a core of ca. 2 nm surrounded by a diffuse dynamic shell of atoms in [C4C1Im][NTf2]. Comparison of the catalytic activity of Pd nanoclusters in alkene cyclopropanation reveals that the atomically dynamic surface is critically important, increasing the activity by a factor of ca. 2 when compared to compact nanoclusters of similar size. Catalyst poisoning tests using mercury and dibenzo[a,e]cyclooctene show that dynamic Pd nanoclusters maintain their catalytic activity, which demonstrate their combined features of homogeneous and heterogeneous catalysts within the same material. Additionally, kinetic studies of cyclopropanation of alkenes mediated by the dynamic Pd nanoclusters reveal an observed catalyst order of 1, underpinning the pseudo-homogeneous character of the dynamic Pd nanoclusters.	Aug 2021
I20-Scanning-X-ray spectroscopy (XAS/XES)	Redox‐active hybrid polyoxometalate‐stabilised gold nanoparticles Carmen Martin , Katharina Kastner , Jamie M. Cameron , Elizabeth Hampson , Jesum Alves Fernandes , Emma K. Gibson , Darren A. Walsh , Victor Sans , Graham N. Newton Angewandte Chemie International Edition 59, 14331 - 14335 DOI: 10.1002/anie.202005629 Diamond Proposal Number(s): [15151] Open Access Show Abstract ▼ Abstract: We report the design and preparation of multifunctional hybrid nanomaterials through the stabilization of gold nanoparticles with thiol‐functionalised hybrid organic–inorganic polyoxometalates (POMs). The covalent attachment of the hybrid POM forms new nanocomposites that are stable at temperatures and pH values which destroy analogous electrostatically functionalised nanocomposites. Photoelectrochemical analysis revealed the unique photochemical and redox properties of these systems.	Aug 2020

Publications Database

Search Results

You searched for all publications:

Search Again...

Subject Areas (check all that apply) select all

Instruments used to collect data (check all that apply) select all

Collaborations involved (check all that apply) select all

Diamond Offline Facilities used

Relevant Technical Areas (check all that apply) select all

Menu for Anonymous User