A5005540700- Ammonia Synthesis and Nitrogen Reduction
- Advanced Photocatalysis Techniques
- Hydrogen Storage and Materials
- Caching and Content Delivery
- Electrocatalysts for Energy Conversion
- Catalytic Processes in Materials Science
- Muon and positron interactions and applications
- Chemical Synthesis and Characterization
- Nanoparticle-Based Drug Delivery
- Advanced Battery Materials and Technologies
- Gas Sensing Nanomaterials and Sensors
- RNA Interference and Gene Delivery
- Advanced Polymer Synthesis and Characterization
- Advanced Battery Technologies Research
- Advanced Data Storage Technologies
- MXene and MAX Phase Materials
- Risk and Safety Analysis
- Catalysis and Oxidation Reactions
- Advanced biosensing and bioanalysis techniques
- Polymer Surface Interaction Studies
- Disaster Response and Management
Monash University
2019-2025
ARC Centre of Excellence for Electromaterials Science
2019-2022
Australian Regenerative Medicine Institute
2020-2022
The University of Melbourne
2016-2017
Shuttling protons in ammonia synthesis An electrochemical route to could substantially lower the greenhouse gas emissions associated with current thermal Haber-Bosch process. One relatively promising option under study involves reductive formation of lithium nitride, which can be protonated ammonia. However, ethanol used date as a local proton source these studies may degrade reaction conditions. Suryanto et al. report use tetraalkyl phosphonium salt place (see Perspective by Westhead )....
Proton transfer is a key step of the lithium-mediated electrochemical reduction nitrogen to ammonia. Herein, we investigate impact chemical nature proton carrier on performance and highlight shuttles that enable effective ammonia synthesis.
As research on sustainable ammonia synthesis via electrochemical and photochemical N2 reduction progresses to include a wider variety of aqueous aprotic electrolytes, 1H NMR spectroscopy is increasingly adopted as means for ammonium quantification. However, this method highly sensitive experimental parameters, demonstrated herein using versatile robust pulse program. We demonstrate the sensitivity measurement final pH analyzed solution identify [H+] concentration range enabling compare...
Previous theoretical work has predicted vanadium and niobium nitrides to be catalytically active toward the electrochemical reduction of dinitrogen ammonia inactive for hydrogen evolution reaction. The present experimental study investigates electrocatalytic activity vanadium(III) nitride, niobium(III) Nb4N5 nitrogen reaction in aqueous electrolyte solutions different pH under ambient conditions using a robust testing protocol thoroughly controlled exclude any contamination with adventitious...
While direct nitridation of magnesium requires high temperatures, we demonstrate that an electrodeposited, metal surface can activate N 2 at close-to-ambient temperature, and the resulting material be converted into ammonium.
The lithium mediated reduction of N2 is one the only available approaches to electrochemical ammonia production at significant yields under ambient conditions. However, much remains be investigated about various processes and side reactions that are involved. Herein, we have examined effects parameters including electrode potential, convection, pressure, water content refine control process. We demonstrate a closely linear yield can maintained during experiments up 60 h in length, with...
High-performance Li-mediated nitrogen reduction reaction (NRR) requires an effective anode process, such as the hydrogen oxidation (HOR), to complete electrosynthesis of ammonia. However, understanding mechanism, kinetics, and suitable catalysts for HOR in organic media relevant NRR is limited. To address this, present work investigates H2 electrooxidation lithium bis(trifluoromethanesulfonyl)imide tetrahydrofuran solutions using Pt/C other highly dispersed carbon-supported metal (Ni/C,...
The effective escape of nanocarriers from endosomal compartments the cell remains a major hurdle in nanomedicine. pH‐responsive, self‐assembled, dual component particles based on poly[2‐(diethylamino)ethyl methacrylate)(PDEAEMA) and poly(ethylene glycol)‐ b ‐poly[2‐(diethylamino)ethyl methacrylate) (PEG‐ ‐PDEAEMA) has been recently reported. Herein, we report that polymer molecular weight ( M n ) can be used to tune nanoparticle delivery systems. PDEAEMA 7 kDa, 27 56 kDa 106 was synthesized...
Abstract Oxidised nitrogen species (NO x ) are recognised as a major source of false‐positive reduction reaction (NRR) results. Even when addressed, NO commonly eradicated at the initial stages experiment only. The present work demonstrates shortcomings this approach through scrutiny evolution NH 3 , 2 − and during N ‐saturated acetonitrile solutions with an Fe‐modified electrode. Notwithstanding, thorough purification experimental setup, persistent electroreduction was detected in solution...
As a by‐product of biofuel production, glycerol needs to find its use in various applications, for example, as substrate electrosynthesis more valuable chemicals. The oxidation reaction (GOR) aqueous media is technologically feasible but produces products with hard‐to‐control selectivity. Less explored the electrooxidation anhydrous glycerol, which theoretically limits possible aldehydes/ketones, including high‐cost glyceraldehyde. Herein, GOR gold electrodes investigated using and...
Inspired by the previously published theoretical findings, present work aims to assess electrocatalytic activity of molybdenum(IV) sulfide modified with metallic molybdenum for nitrogen reduction reaction in aqueous electrolyte solution (0.1 M Li 2 SO 4 ; pH 3) and aprotic [C mpyr][eFAP] ionic liquid at ambient temperature. The material interest was synthesized via a high-temperature partial MoS , while tests followed established robust protocol, which particular involves strict control over...
Targeting nanoparticles to specific cellular receptors has the potential deliver therapeutic compounds target sites while minimizing side effects. To this end, we have conjugated a targeting protein, holo-transferrin (holo-Tf), pH-responsive polymers, poly(2-(diethylamino)ethyl methacrylate) (PDEAEMA) and methacrylate)-ran-poly(2-(diisopropylamino)ethyl methacrylate (PDEAEMA-r-PDPAEMA). These protein–polymer hybrid materials were observed self-assemble when pH is increased above pKa of...
Since early 2018, the nitrogen reduction reaction to ammonia (NRR) has become a focus of active research as an approach sustainable production support and eventually replace century-old yet highly robust Haber-Bosch catalytic technology. More than one hundred reports on successful NRR in aqueous electrolyte solutions catalysed by comparatively wide range materials have been published end 2019, though reported yield rates (<100 pmol s -1 cm -2 , per geometric surface area electrode)...
Electrochemical nitrogen reduction reaction (NRR) that can be powered by renewable energy is currently broadly investigated as a sustainable alternative method for the industrial ammonia synthesis to replace, at least partially, Haber-Bosch technology. Inspired recent theoretical reports advocating several types of materials active NRR catalysts, our experimental work aimed assess validity some these predictions. Vanadium and niobium nitrides were suggested previous computational...
Apart from its role as a main precursor of the synthetic fertiliser production, ammonia is likely to become an even more important chemical in future due prospects energy carrier. (1) To meet associated growing demand while meeting CO 2 emission reductions targets, recent efforts have aimed translate conventional polluting NH 3 synthesis low emissions technology by supplying Haber-Bosch reactors with H derived renewable-powered water electrolysis rather than steam methane reforming. (2) This...