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Dive into the research topics where Jonathan Z. Bloh is active.

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Featured researches published by Jonathan Z. Bloh.


Angewandte Chemie | 2017

Selective Activation of C−H Bonds in a Cascade Process Combining Photochemistry and Biocatalysis

Wuyuan Zhang; Bastien O. Burek; Elena Fernández-Fueyo; Miguel Alcalde; Jonathan Z. Bloh; Frank Hollmann

Abstract Selective oxyfunctionalizations of inert C−H bonds can be achieved under mild conditions by using peroxygenases. This approach, however, suffers from the poor robustness of these enzymes in the presence of hydrogen peroxide as the stoichiometric oxidant. Herein, we demonstrate that inorganic photocatalysts such as gold–titanium dioxide efficiently provide H2O2 through the methanol‐driven reductive activation of ambient oxygen in amounts that ensure that the enzyme remains highly active and stable. Using this approach, the stereoselective hydroxylation of ethylbenzene to (R)‐1‐phenylethanol was achieved with high enantioselectivity (>98 % ee) and excellent turnover numbers for the biocatalyst (>71 000).


RSC Advances | 2018

Grafted iron(III) ions significantly enhance NO2 oxidation rate and selectivity of TiO2 for photocatalytic NOx abatement

Julia Patzsch; Jacob Spencer; Andrea Folli; Jonathan Z. Bloh

Semiconductor photocatalysis could be an effective means to combat nitrogen oxides (NOx) based air pollution through mineralisation of NOx to nitrate. However, most of the typically TiO2-based catalysts employed show a much higher reactivity towards NO than NO2, leading to an accumulation of this unwanted and toxic intermediate. By grafting the photocatalyst with small amounts (≤0.1 at%) of isolated iron(III) ions, the reactivity towards NO2 is increased by the factor of 9, bringing it up to par with the NO-reactivity and alleviating the problem with intermediate accumulation. Consequently, the observed selectivity of the reaction is dramatically increased from less than 40% to more than 90%. The paper also discusses possible mechanisms for this very beneficial behavior.


Journal of Solid State Chemistry | 2016

An investigation of the optical properties and water splitting potential of the coloured metallic perovskites Sr{sub 1−x}Ba{sub x}MoO{sub 3}

H.A. Hopper; Jiabo Le; Jun Cheng; T. Weller; R. Marschall; Jonathan Z. Bloh; D.E. Macphee; A. Folli

The solid solution Sr1−xBaxMoO3 (x=0.00, 0.025, 0.050, 0.075, 0.100 and 1.00) has been synthesised. Rietveld refinement of X-ray diffraction data shows that all materials crystallise with cubic (Pm-3m) symmetry and that a miscibility gap exists from x=0.1–1.0. The optical properties of the metallic perovskites Sr1−xBaxMoO3 have been investigated by a combination of UV–vis spectroscopy and density functional theory (DFT). Upon increasing x from 0 to 1 in Sr1−xBaxMoO3 there is a reduction in the measured band gap from 2.20 eV to 2.07 eV. The measured band gap is attributed to the electronic transition from the Mo 4d t2g band to the eg band. The potential of SrMoO3 and BaMoO3 as water-splitting photocatalysts was explored but there was no evidence of hydrogen or oxygen evolution, even with the presence of a Pt co-catalyst.


Angewandte Chemie | 2017

Selektive C-H-Bindungsaktivierung durch eine Kaskade aus Photochemie und Biokatalyse

Wuyuan Zhang; Bastien O. Burek; Elena Fernández-Fueyo; Miguel Alcalde; Jonathan Z. Bloh; Frank Hollmann


European Journal of Organic Chemistry | 2017

Heterogeneous Photoredox Catalysis: Reactions, Materials, and Reaction Engineering

Jonathan Z. Bloh; Roland Marschall


Journal of Solid State Chemistry | 2016

An investigation of the optical properties and water splitting potential of the coloured metallic perovskites Sr1-xBaxMoO3

H.A. Hopper; Jiabo Le; Jun Cheng; T. Weller; R. Marschall; Jonathan Z. Bloh; D.E. Macphee; A. Folli; A. C. Mclaughlin


Catalysis Today | 2018

Improved photocatalytic ozone abatement over transition metal-grafted titanium dioxide

Julia Patzsch; Jonathan Z. Bloh


Journal of Electroanalytical Chemistry | 2016

Band structure and charge carrier dynamics in (W,N)-codoped TiO 2 resolved by electrochemical impedance spectroscopy combined with UV–vis and EPR spectroscopies

Andrea Folli; Jonathan Z. Bloh; Donald E. Macphee


ACS Catalysis | 2018

Improving the Selectivity of Photocatalytic NOx Abatement through Improved O2 Reduction Pathways Using Ti0.909W0.091O2Nx Semiconductor Nanoparticles: From Characterization to Photocatalytic Performance

Andrea Folli; Jonathan Z. Bloh; Katherine Armstrong; Emma Richards; Damien Martin Murphy; Li Lu; Christopher J. Kiely; David John Morgan; Ronald I. Smith; A. C. Mclaughlin; Donald E. Macphee


Physical Chemistry Chemical Physics | 2017

On the underlying mechanisms of the low observed nitrate selectivity in photocatalytic NOx abatement and the importance of the oxygen reduction reaction

Julia Patzsch; Andrea Folli; Donald E. Macphee; Jonathan Z. Bloh

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T. Weller

University of Giessen

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A. Folli

University of Aberdeen

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H.A. Hopper

University of Aberdeen

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