Sam A. J. Hillman
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View article: Non-selective charge transfer to metal co-catalysts limits oxygen evolution photocatalysis in cobalt-doped carbon nitrides
Non-selective charge transfer to metal co-catalysts limits oxygen evolution photocatalysis in cobalt-doped carbon nitrides Open
Metal functionalisation of organic photocatalysts for solar fuels production is a common design strategy. However, herein we demonstrate that recombination on non-charge-selective metal co-catalysts can limit the performance of metal-doped…
View article: Photoaccumulation of Long-lived Reactive Electrons in the Microporous Ti(IV) Oxocluster Based Metal-organic Framework for Light and Dark Photocatalysis
Photoaccumulation of Long-lived Reactive Electrons in the Microporous Ti(IV) Oxocluster Based Metal-organic Framework for Light and Dark Photocatalysis Open
The microporous Ti12 oxocluster based metal-organic framework MIP-177(Ti)-LT exhibits excellent stability and photoactivity, making it highly promising for photocatalytic applications (LT stands for low temperature synthesis). This study e…
View article: Understanding charge separation in CdS/Ce-UiO66-NH<sub>2</sub> heterojunctions for enhanced photocatalytic hydrogen evolution
Understanding charge separation in CdS/Ce-UiO66-NH<sub>2</sub> heterojunctions for enhanced photocatalytic hydrogen evolution Open
The enhanced H 2 evolution efficiency of the CdS/Ce-UiO-NH 2 heterojunction is attributed to its ability to generate long-lived (ms) charges. In contrast with Zr-UiOs, Ce-UiO-NH 2 acts as the electron donor in this heterojunction.
View article: Terahertz-permittivity of Carbon Nitrides: Revealing humidity-enhanced dielectric properties on the picosecond timescales relevant for charge carrier photogeneration
Terahertz-permittivity of Carbon Nitrides: Revealing humidity-enhanced dielectric properties on the picosecond timescales relevant for charge carrier photogeneration Open
Organic based semiconductor materials offer emerging and sustainable solutions for solar energy conversion technologies and electronics. However, knowledge of their intrinsic (photo)physical properties and light-matter interactions is ofte…
View article: Long‐Lived Charges in Y6:PM6 Bulk‐Heterojunction Photoanodes with a Polymer Overlayer Improve Photoelectrocatalytic Performance
Long‐Lived Charges in Y6:PM6 Bulk‐Heterojunction Photoanodes with a Polymer Overlayer Improve Photoelectrocatalytic Performance Open
Photogenerating charges with long lifetimes to drive catalysis is challenging in organic semiconductors. Here, the role of a PM6 polymer overlayer on the photoexcited carrier dynamics is investigated in a Y6:PM6 bulk‐heterojunction (BHJ) p…
View article: Why Do Sulfone-Containing Polymer Photocatalysts Work So Well for Sacrificial Hydrogen Evolution from Water?
Why Do Sulfone-Containing Polymer Photocatalysts Work So Well for Sacrificial Hydrogen Evolution from Water? Open
Many of the highest-performing polymer photocatalysts for sacrificial hydrogen evolution from water have contained dibenzo[b,d]thiophene sulfone units in their polymer backbones. However, the reasons behind the dominance of this building b…
View article: Rational Design of Carbon Nitride Photoelectrodes with High Activity Toward Organic Oxidations
Rational Design of Carbon Nitride Photoelectrodes with High Activity Toward Organic Oxidations Open
Carbon nitride (CN x ) is a light‐absorber with excellent performance in photocatalytic suspension systems, but the activity of CN x photoelectrodes has remained low. Here, cyanamide‐functionalized CN x ( NCN CN x ) was co‐deposited with I…
View article: Rational Design of Carbon Nitride Photoelectrodes with High Activity Toward Organic Oxidations
Rational Design of Carbon Nitride Photoelectrodes with High Activity Toward Organic Oxidations Open
Carbon nitride (CN x ) is a light‐absorber with excellent performance in photocatalytic suspension systems, but the activity of CN x photoelectrodes has remained low. Here, cyanamide‐functionalized CN x ( NCN CN x ) was co‐deposited with I…
View article: Why do sulfone-containing polymer photocatalysts work so well for sacrificial hydrogen evolution from water?
Why do sulfone-containing polymer photocatalysts work so well for sacrificial hydrogen evolution from water? Open
In recent years, many of the highest performing polymer photocatalysts for hydrogen evolution from water have contained dibenzo[b,d]thiophene sulfone units in their polymer backbones. However, the reasons behind the dominance of this build…
View article: Why do sulfone-containing polymer photocatalysts work so well for sacrificial hydrogen evolution from water?
Why do sulfone-containing polymer photocatalysts work so well for sacrificial hydrogen evolution from water? Open
In recent years, many of the highest performing polymer photocatalysts for hydrogen evolution from water have contained dibenzo[b,d]thiophene sulfone units in their polymer backbones. However, the reasons behind the dominance of this build…
View article: Dataset of the article 'Redox state kinetics in water-oxidation IrOx electrocatalysts measured by operando spectroelectrochemistry'
Dataset of the article 'Redox state kinetics in water-oxidation IrOx electrocatalysts measured by operando spectroelectrochemistry' Open
Data published in the article 'Redox state kinetics in water-oxidation IrOx electrocatalysts measured by operando spectroelectrochemistry', https://doi.org/10.1021/acscatal.1c03290. Abstract: hydrous iridium oxides (IrOx) are the best oxyg…
View article: Dataset of the article 'Redox state kinetics in water-oxidation IrOx electrocatalysts measured by operando spectroelectrochemistry'
Dataset of the article 'Redox state kinetics in water-oxidation IrOx electrocatalysts measured by operando spectroelectrochemistry' Open
Data published in the article 'Redox state kinetics in water-oxidation IrOx electrocatalysts measured by operando spectroelectrochemistry', https://doi.org/10.1021/acscatal.1c03290. Abstract: hydrous iridium oxides (IrOx) are the best oxyg…
View article: Tunable Control of the Hydrophilicity and Wettability of Conjugated Polymers by a Postpolymerization Modification Approach
Tunable Control of the Hydrophilicity and Wettability of Conjugated Polymers by a Postpolymerization Modification Approach Open
A facile method to prepare hydrophilic polymers by a postpolymerization nucleophillic aromatic substitution reaction of fluoride on an emissive conjugated polymer (CP) backbone is reported. Quantitative functionalization by a series of mon…
View article: Side-chain tuning in conjugated polymer photocatalysts for improved hydrogen production from water
Side-chain tuning in conjugated polymer photocatalysts for improved hydrogen production from water Open
Structure–property–activity relationships in solution processable polymer photocatalysts for hydrogen production from water were probed by varying the chemical structure of both the polymer side-chains and the polymer backbone.
View article: Electron Accumulation Induces Efficiency Bottleneck for Hydrogen Production in Carbon Nitride Photocatalysts
Electron Accumulation Induces Efficiency Bottleneck for Hydrogen Production in Carbon Nitride Photocatalysts Open
This study addresses the light intensity dependence of charge accumulation in a photocatalyst suspension, and its impact on both charge recombination kinetics and steady-state H2 evolution efficiency. Cyanamide surface functionalized melon…
View article: Understanding structure-activity relationships in linear polymer photocatalysts for hydrogen evolution
Understanding structure-activity relationships in linear polymer photocatalysts for hydrogen evolution Open
Conjugated polymers have sparked much interest as photocatalysts for hydrogen production. However, beyond basic considerations such as spectral absorption, the factors that dictate their photocatalytic activity are poorly understood. Here …