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	Shape-persistent porous organic cage supported palladium nanoparticles as heterogeneous catalytic materials Shan Jiang , Harrison J. Cox , Evangelos I. Papaioannou , Chenyang Tang , Huiyu Liu , Billy J. Murdoch , Emma K. Gibson , Ian S. Metcalfe , John S. O. Evans , Simon K. Beaumont Nanoscale 11, 14929 - 14936 DOI: 10.1039/C9NR04553H Diamond Proposal Number(s): [15151] Open Access Show Abstract ▼ Abstract: Porous Organic Cages (POCs) are an emerging class of self-assembling, porous materials with novel properties. They offer a key advantage over other porous materials in permitting facile solution processing and re-assembly. The combination of POCs with metal nanoparticles (NPs) unlocks applications in the area of catalysis. In this context, POCs can function as both the template of ultra-small NPs and a porous, but reprocessable, heterogeneous catalyst support. Here, we demonstrate the synthesis of ultra-small Pd NPs with an imine linked POC known as ‘CC3’, and show that hydrogen gas can be used to form metallic NPs at ∼200 °C without the reduction of the organic cage (and the accompanying, unwanted loss of crystallinity). The resulting materials are characterized using a range of techniques (including powder diffraction, scanning transmission electron microscopy and synchrotron X-ray absorption spectroscopy) and shown to be recrystallizable following dissolution in organic solvent. Their catalytic efficacy is demonstrated using the widely studied carbon monoxide oxidation reaction. This demonstration paves the way for using ultra-small NPs synthesized with POCs as solution-processable, self-assembling porous catalytic materials.	Aug 2019
I05-ARPES	Reactive intercalation and oxidation at the buried graphene-germanium interface Philipp Braeuninger-Weimer , Oliver Burton , Robert S. Weatherup , Ruizhi Wang , Pavel Dudin , Barry Brennan , Andrew J. Pollard , Bernhard C. Bayer , Vlad P. Veigang-Radulescu , Jannik C. Meyer , Billy J. Murdoch , Peter J. Cumpson , Stephan Hofmann Apl Materials 7 DOI: 10.1063/1.5098351 Diamond Proposal Number(s): [17381] Open Access Show Abstract ▼ Abstract: We explore a number of different electrochemical, wet chemical, and gas phase approaches to study intercalation and oxidation at the buried graphene-Ge interface. While the previous literature focused on the passivation of the Ge surface by chemical vapor deposited graphene, we show that particularly via electrochemical intercalation in a 0.25 N solution of anhydrous sodium acetate in glacial acetic acid, this passivation can be overcome to grow GeO2 under graphene. Angle resolved photoemission spectroscopy, Raman spectroscopy, He ion microscopy, and time-of-flight secondary ion mass spectrometry show that the monolayer graphene remains undamaged and its intrinsic strain is released by the interface oxidation. Graphene acts as a protection layer for the as-grown Ge oxide, and we discuss how these insights can be utilized for new processing approaches.	Jul 2019

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