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Helmut Schäfer

Researcher at University of Osnabrück

Publications -  56
Citations -  2723

Helmut Schäfer is an academic researcher from University of Osnabrück. The author has contributed to research in topics: Oxygen evolution & Water splitting. The author has an hindex of 24, co-authored 53 publications receiving 2261 citations. Previous affiliations of Helmut Schäfer include Free University of Berlin & University of Oldenburg.

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Lanthanide-Doped NaYF4 Nanocrystals in Aqueous Solution Displaying Strong Up-Conversion Emission

TL;DR: In this article, a colloidal solubility in water was obtained by treating the nanocrystals with 1-hydroxyethane-1,1-diphosphonic acid (HEDP).
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Synthesis and Optical Properties of KYF4/Yb, Er Nanocrystals, and their Surface Modification with Undoped KYF4

TL;DR: In this article, the surface modification of a mixture of α-NaYF4/Yb3+, Er3+ nanocrystals with a mean diameter of approximately 13.5nm was performed to increase the upconversion efficiency.
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Stainless steel made to rust: a robust water-splitting catalyst with benchmark characteristics

TL;DR: In this article, a surface modification carried out with AISI 304, a general purpose austenitic stainless steel, very likely, based upon a dissolution mechanism, to result in the formation of an ultra-thin layer consisting of Ni, Fe oxide with a purity >99%.
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Water electrolysis: from textbook knowledge to the latest scientific strategies and industrial developments

TL;DR: In this paper , the authors present a review of the fundamentals of electrocatalytically initiated water splitting and the very latest scientific findings from university and institutional research, also covering specifications and special features of the current industrial processes and those processes currently being tested in large-scale applications.