Emma Lovell

Two Steps Back, One Leap Forward: Synergistic Energy Conversion in Plasmonic and Plasma Catalysis

Publisher: American Chemical Society (ACS)

Date: 16-12-2022

DOI: 10.1021/ACSENERGYLETT.1C02387

Manipulating ceria-titania binary oxide features and their impact as nickel catalyst supports for low temperature steam reforming of methane

Publisher: Elsevier BV

Date: 2017

DOI: 10.1016/J.APCATA.2016.11.019

Uncovering Atomic-Scale Stability and Reactivity in Engineered Zinc Oxide Electrocatalysts for Controllable Syngas Production

Publisher: Wiley

Date: 10-06-2020

DOI: 10.1002/AENM.202001381

Electroreduction of CO2 to CO on a Mesoporous Carbon Catalyst with Progressively Removed Nitrogen Moieties

Publisher: American Chemical Society (ACS)

Date: 30-08-2018

DOI: 10.1021/ACSENERGYLETT.8B01409

Emerging material engineering strategies for amplifying photothermal heterogeneous CO2 catalysis

Publisher: Elsevier BV

Date: 08-2021

DOI: 10.1016/J.JECHEM.2020.11.005

Enhanced bio-oil deoxygenation activity by Cu/zeolite and Ni/zeolite catalysts in combined in-situ and ex-situ biomass pyrolysis

Publisher: Elsevier BV

Date: 06-2019

DOI: 10.1016/J.JAAP.2019.03.008

Low-Temperature CO2 Methanation: Synergistic Effects in Plasma-Ni Hybrid Catalytic System

Publisher: American Chemical Society (ACS)

Date: 06-01-2020

DOI: 10.1021/ACSSUSCHEMENG.9B06180

Nitrate reduction to ammonium: from CuO defect engineering to waste NOx-to-NH3 economic feasibility

Publisher: Royal Society of Chemistry (RSC)

Date: 2021

DOI: 10.1039/D1EE00594D

Abstract: Critical to the feasibility of electrochemical reduction of waste NO x (NO x RR), as a sustainable pathway and to close the NO x cycle for the emerging NH 3 economy, is the requirement of inexpensive, scalable and selective catalysts that can generate NH 4 + with high yield, as indicated by our economic modelling.

Role of support in photothermal carbon dioxide hydrogenation catalysed by Ni/CexTiyO2

Publisher: Elsevier BV

Date: 04-2018

DOI: 10.1016/J.PNSC.2018.02.004

Asymmetrical Double Flame Spray Pyrolysis-Designed SiO₂/Ce_0.7Zr_0.3O₂ for the Dry Reforming of Methane

Publisher: American Chemical Society (ACS)

Date: 07-2019

DOI: 10.1021/ACSAMI.9B02572

Abstract: Silica has the potential to enhance the performance of ceria-zirconia as a support for the dry reforming of methane however, controlling the integration of silica with the ceria-zirconia using flame spray pyrolysis (FSP) is a significant challenge. To address this challenge, an asymmetrically variable double-FSP (DFSP) system was established to control the SiO

CO2 reforming of methane over MCM-41-supported nickel catalysts: altering support acidity by one-pot synthesis at room temperature

Publisher: Elsevier BV

Date: 03-2014

DOI: 10.1016/J.APCATA.2013.12.020

Engineering CuO_x Nanoparticles on Cu Foam for Acidic Nitrate Reduction to Ammonium

Publisher: American Chemical Society (ACS)

Date: 06-03-2023

DOI: 10.1021/ACSANM.3C00681

Cooperative defect-enriched SiO2 for oxygen activation and organic dehydrogenation

Publisher: Elsevier BV

Date: 08-2019

DOI: 10.1016/J.JCAT.2019.07.006

A sea-change

Publisher: Royal Society of Chemistry (RSC)

Date: 2018

DOI: 10.1039/C8EE00976G

Abstract: The facile and scalable synthesis of manganese-doped nickel/nickel oxide heterostructures with high activity, outperforming the Pt benchmark, in neutral electrolytes.

A review on photo-thermal catalytic conversion of carbon dioxide

Publisher: Elsevier BV

Date: 07-2017

DOI: 10.1016/J.GEE.2017.06.003

Plasma Treating Mixed Metal Oxides to Improve Oxidative Performance via Defect Generation

Publisher: MDPI AG

Date: 27-08-2019

DOI: 10.3390/MA12172756

Abstract: The generation of structural defects in metal oxide catalysts offers a potential pathway to improve performance. Herein, we investigated the effect of thermal hydrogenation and low-temperature plasma treatments on mixed SiO2/TiO2 materials. Hydrogenation at 500 °C resulted in the reduction of the material to produce Ti3+ in the bulk TiO2. In contrast, low temperature plasma treatment for 10 or 20 min generated surface Ti3+ species via the removal of oxygen on both the neat and hydrogenated material. Assessing the photocatalytic activity of the materials demonstrated a 40–130% increase in the rate of formic acid oxidation after plasma treatment. A strong relationship between the Ti3+ content and catalyst activity was established, although a change in the Si–Ti interaction after plasma treating of the neat SiO2/TiO2 material was found to limit performance, and suggests that performance is not determined solely by the presence of Ti3+.

Insights into plasma-catalytic nitrogen fixation from catalyst microanalysis and chemical kinetics modelling

Publisher: Elsevier BV

Date: 08-2023

DOI: 10.1016/J.CEJ.2023.143841

Modulating catalytic oxygen activation over Pt–TiO2/SiO2 catalysts by defect engineering of a TiO2/SiO2 support

Publisher: Royal Society of Chemistry (RSC)

Date: 2022

DOI: 10.1039/D1CY02037D

Abstract: Defect sites (comprising Ti 3+ and NBOHC) and oxygen adsorbed on a Pt surface (PtO ads ) boost catalytic oxygen activation on a Pt/TiO 2 –SiO 2 catalyst.

Metal–Organic Framework Decorated Cuprous Oxide Nanowires for Long‐lived Charges Applied in Selective Photocatalytic CO₂ Reduction to CH₄

Publisher: Wiley

Date: 03-03-2021

DOI: 10.1002/ANIE.202015735

Elucidating the impact of Ni and Co loading on the selectivity of bimetallic NiCo catalysts for dry reforming of methane

Publisher: Elsevier BV

Date: 11-2018

DOI: 10.1016/J.CEJ.2018.07.009

Harnessing the structural attributes of NiMg-CUK-1 MOF for the dual-function capture and transformation of carbon dioxide into methane

Publisher: Elsevier BV

Date: 2023

DOI: 10.1016/J.CEJ.2022.140623

Mixed‐Metal MOF‐74 Templated Catalysts for Efficient Carbon Dioxide Capture and Methanation

Publisher: Wiley

Date: 04-12-2020

DOI: 10.1002/ADFM.202007624

3D Heterostructured Copper Electrode for Conversion of Carbon Dioxide to Alcohols at Low Overpotentials

Publisher: Wiley

Date: 07-2018

DOI: 10.1002/ADSU.201800064

Altering the influence of ceria oxygen vacancies in Ni/Ce_xSi_yO₂for photothermal CO₂methanation

Publisher: Royal Society of Chemistry (RSC)

Date: 2021

DOI: 10.1039/D1CY00136A

Abstract: While the benefit of CeO 2 surface oxygen vacancies for CO 2 methanation is well established, their role under photothermal conditions has not been probed in depth.

From passivation to activation – tunable nickel/nickel oxide for hydrogen evolution electrocatalysis

Publisher: Royal Society of Chemistry (RSC)

Date: 2020

DOI: 10.1039/C9CC07486D

Abstract: A novel, simple and controllable approach to designing NiO/Ni heterostructures supported on carbon for the hydrogen evolution reaction (HER) was utilized.

Plasmonic effects on CO2 reduction over bimetallic Ni-Au catalysts

Publisher: Elsevier BV

Date: 02-2019

DOI: 10.1016/J.CES.2018.04.003

Bio-oil upgrading with catalytic pyrolysis of biomass using Copper/zeolite-Nickel/zeolite and Copper-Nickel/zeolite catalysts

Publisher: Elsevier BV

Date: 05-2019

DOI: 10.1016/J.BIORTECH.2019.01.067

Abstract: The bio-oil obtained from a general pyrolysis process contains a higher concentration of oxygenated compounds and the resultant physical and chemical properties make it an unsuitable drop-in fuel. The oxygenated compounds in the bio-oil can be converted into hydrocarbons or less oxygenated compounds with the application of catalysts. This study demonstrated the bio-oil upgrading with the application of catalysts, comparing the catalytic effect of combined mono-metallic catalysts (Cu/zeolite and Ni/zeolite) and sole bi-metallic catalyst (CuNi/zeolite) on the composition of bio-oil and pyrolytic gases. The results demonstrated that in comparison to the combined mono-metallic catalysts, the sole bi-metallic catalyst showed better deoxygenation for all the oxygenated compounds and favoured the production of aliphatic hydrocarbons, whereas the combination of mono-metallic catalysts generated higher proportion of aromatic hydrocarbons in the bio-oil. In both cases, the catalysts equally favoured decarboxylation and decarbonylation reactions, as CO

Unifying double flame spray pyrolysis with lanthanum doping to restrict cobalt–aluminate formation in Co/Al₂O₃ catalysts for the dry reforming of methane

Publisher: Royal Society of Chemistry (RSC)

Date: 2019

DOI: 10.1039/C9CY01293A

Abstract: Atomic-sized lanthanum doping via double flame spray pyrolysis leads to remarkable dry reforming of methane performance.

Anchoring Sites Engineering in Single‐Atom Catalysts for Highly Efficient Electrochemical Energy Conversion Reactions

Publisher: Wiley

Date: 03-09-2021

DOI: 10.1002/ADMA.202102801

Abstract: Single‐atom catalysts (SACs) have been at the frontier of research field in catalysis owing to the maximized atomic utilization, unique structures and properties. The atomically dispersed and catalytically active metal atoms are necessarily anchored by surrounding atoms. As such, the structure and composition of anchoring sites significantly influence the catalytic performance of SACs even with the same metal element. Significant progress has been made to understand structure–activity relationships at an atomic level, but in‐depth understanding in precisely designing highly efficient SACs for the targeted reactions is still required. In this review, various anchoring sites in SACs are summarized and classified into five different types (doped heteroatoms, defect sites, surface atoms, metal sites, and cavity sites). Then, their impacts on catalytic performance are elucidated for electrochemical reactions based on their distance from the metal center (first coordination shell and beyond). Further, SACs anchored on two typical types of hosts, carbon‐ and metal‐based materials, are highlighted, and the effects of anchoring points on achieving the desirable atomic structure, catalytic performance, and reaction pathways are elaborated. At last, insights and outlook to the SAC field based on current achievements and challenges are presented.

Flame spray pyrolysis-designed silica/ceria-zirconia supports for the carbon dioxide reforming of methane

Publisher: Elsevier BV

Date: 09-2017

DOI: 10.1016/J.APCATA.2017.08.002

Enhancing Ni-SiO 2 catalysts for the carbon dioxide reforming of methane: Reduction-oxidation-reduction pre-treatment

Publisher: Elsevier BV

Date: 12-2016

DOI: 10.1016/J.APCATB.2016.05.080

Effect of Metal‐Support Interactions in Mixed Co/Al Catalysts for Dry Reforming of Methane

Publisher: Wiley

Date: 09-07-2019

DOI: 10.1002/CCTC.201900638

Plasma-Induced Catalyst Support Defects for the Photothermal Methanation of Carbon Dioxide

Publisher: MDPI AG

Date: 28-07-2021

DOI: 10.3390/MA14154195

Abstract: The presence of defects in a catalyst support is known to benefit catalytic activity. In this work, a He-plasma treatment-based strategy for introducing and stabilising defects on a Ni/TiO2 catalyst for photothermal CO2 hydrogenation was established. The impact of pretreatment step sequence—which comprised He-plasma treatment and reduction assivation—on defect generation and stabilisation within the support was evaluated. Characterisation of the Ni/TiO2 catalysts indicated that defects created in the TiO2 support during the initial plasma treatment stage were then stabilised by the reduction assivation process, (P-R)Ni/TiO2. Conversely, performing reduction assivation first, (R-P)Ni/TiO2, invoked a resistance to subsequent defect formation upon plasma treatment and consequently, poorer photothermal catalytic activity. The plasma treatment altered the metal-support interaction and ease of catalyst reduction. Under photothermal conditions, (P-R)Ni/TiO2 reached the highest methane production in 75 min, while (R-P)Ni/TiO2 required 165 min. Decoupling the impacts of light and heat indicated thermal dominance of the reaction with CO2 conversion observed from 200 °C onwards. Methane was the primary product with carbon monoxide detected at 350 °C (~2%) and 400 °C (~5%). Overall, the findings demonstrate the importance of pretreatment step sequence when utilising plasma treatment to generate active defect sites in a catalyst support.

Photoenhanced CO2 methanation over La2O3 promoted Co/TiO2 catalysts

Publisher: Elsevier BV

Date: 10-2021

DOI: 10.1016/J.APCATB.2021.120248

Plasmacatalytic bubbles using CeO2 for organic pollutant degradation

Publisher: Elsevier BV

Date: 2021

DOI: 10.1016/J.CEJ.2020.126413

Light-Enhanced CO₂ Reduction to CH₄ using Nonprecious Transition-Metal Catalysts

Publisher: American Chemical Society (ACS)

Date: 20-02-2020

DOI: 10.1021/ACSSUSCHEMENG.9B06823

Ni-SiO2 Catalysts for the Carbon Dioxide Reforming of Methane: Varying Support Properties by Flame Spray Pyrolysis

Publisher: MDPI AG

Date: 12-03-2015

DOI: 10.3390/MOLECULES20034594

Oxygen-Vacancy Engineering of Cerium-Oxide Nanoparticles for Antioxidant Activity

Publisher: American Chemical Society (ACS)

Date: 30-05-2019

DOI: 10.1021/ACSOMEGA.9B00521

Silver-Based Plasmonic Catalysts for Carbon Dioxide Reduction

Publisher: American Chemical Society (ACS)

Date: 09-01-2020

DOI: 10.1021/ACSSUSCHEMENG.9B06146

Metal–Organic Framework Decorated Cuprous Oxide Nanowires for Long‐lived Charges Applied in Selective Photocatalytic CO₂ Reduction to CH₄

Publisher: Wiley

Date: 03-03-2021

DOI: 10.1002/ANGE.202015735

Modulating Activity through Defect Engineering of Tin Oxides for Electrochemical CO2 Reduction

Publisher: Wiley

Date: 04-07-2019

DOI: 10.1002/ADVS.201900678

Light-Induced Synergistic Multidefect Sites on TiO2/SiO2 Composites for Catalytic Dehydrogenation

Publisher: American Chemical Society (ACS)

Date: 12-02-2019

DOI: 10.1021/ACSCATAL.8B04891

Defective Metal Oxides: Lessons from CO₂RR and Applications in NO_xRR

Publisher: Wiley

Date: 07-06-2023

DOI: 10.1002/ADMA.202205814

Abstract: Sluggish reaction kinetics and the undesired side reactions (hydrogen evolution reaction and self‐reduction) are the main bottlenecks of electrochemical conversion reactions, such as the carbon dioxide and nitrate reduction reactions (CO 2 RR and NO 3 RR). To date, conventional strategies to overcome these challenges involve electronic structure modification and modulation of the charge‐transfer behavior. Nonetheless, key aspects of surface modification, focused on boosting the intrinsic activity of active sites on the catalyst surface, are yet to be fully understood. Engingeering of oxygen vacancies (OVs) can tune surface/bulk electronic structure and improve surface active sites of electrocatalysts. The continuous breakthroughs and significant progress in the last decade position engineering of OVs as a potential technique for advancing electrocatalysis. Motivated by this, the state‐of‐the‐art findings of the roles of OVs in both the CO 2 RR and the NO 3 RR are presented. The review starts with a description of approaches to constructing and techniques for characterizing OVs. This is followed by an overview of the mechanistic understanding of the CO 2 RR and a detailed discussion on the roles of OVs in the CO 2 RR. Then, insights into the NO 3 RR mechanism and the potential of OVs on NO 3 RR based on early findings are highlighted. Finally, the challenges in designing CO 2 RR/NO 3 RR electrocatalysts and perspectives in studying OV engineering are provided.

Discovery Early Career Researcher Award - Grant ID: DE230100789

Start Date: 05-2023

End Date: 01-2027

Amount: $397,613.00

Funder: Australian Research Council

Discovery Projects - Grant ID: DP230102907

Start Date: 03-2023

End Date: 03-2026

Amount: $422,103.00

Funder: Australian Research Council

Australian Laureate Fellowships - Grant ID: FL140100081

Start Date: 2015

End Date: 12-2019

Amount: $2,380,000.00

Funder: Australian Research Council

Linkage Infrastructure, Equipment And Facilities - Grant ID: LE210100084

Start Date: 2021

End Date: 07-2023

Amount: $269,020.00

Funder: Australian Research Council

Industrial Transformation Training Centres - Grant ID: IC230100042

Start Date: 2023

End Date: 12-2027

Amount: $5,000,000.00

Funder: Australian Research Council

Linkage Infrastructure, Equipment And Facilities - Grant ID: LE230100052

Start Date: 07-2023

End Date: 07-2024

Amount: $549,859.00

Funder: Australian Research Council

Industrial Transformation Training Centres - Grant ID: IC200100023

Start Date: 06-2021

End Date: 06-2026

Amount: $4,920,490.00

Funder: Australian Research Council