Calvyn T Howells

Title: Calvyn T Howells: Innovator in Photocatalytic Hydrogen Evolution

Introduction

Calvyn T Howells is a notable inventor based in Thuwal, Saudi Arabia. He has made significant contributions to the field of photocatalytic hydrogen evolution through his innovative research and patents. His work focuses on the development of organic semiconductor heterojunction nanoparticles, which have promising applications in sustainable energy.

Latest Patents

Calvyn holds a patent titled "Record photocatalytic hydrogen evolution from organic semiconductor heterojunction nanoparticles." This patent describes a nanoparticle that features an internal D/A heterojunction, achieving a hydrogen evolution rate of 64,426 ± 7022 μmol/h under broadband visible light illumination. The measured external quantum efficiencies (EQEs) of the nanoparticle throughout the visible spectrum exceed 5% at wavelengths between 660 to 700 nm. The methods for fabricating this nanoparticle include preparing individual stock solutions, heating them for complete dissolution, filtering, and mixing to create a nanoparticle precursor solution, which is then processed to form a surfactant-stabilized nanoparticle dispersion.

Career Highlights

Calvyn has worked at prestigious institutions, including King Abdullah University of Science and Technology and Imperial College London. His research has contributed to advancements in photocatalytic technologies, enhancing the efficiency of hydrogen production from renewable sources.

Collaborations

Calvyn has collaborated with notable colleagues such as Jan Kosco and Matthew Bidwell. Their combined expertise has furthered the understanding and development of innovative materials in the field of photocatalysis.

Conclusion

Calvyn T Howells is a pioneering inventor whose work in photocatalytic hydrogen evolution is paving the way for sustainable energy solutions. His contributions to the field are significant and continue to inspire future innovations.