Issue 40, 2015

Crystal defect-mediated band-gap engineering: a new strategy for tuning the optical properties of Ag2Se quantum dots toward enhanced hydrogen evolution performance

Abstract

Crystal defects have been introduced into inherently narrow-band-gap and non-toxic Ag2Se quantum dots (QDs) via a facile and efficient thermal vibration approach during synthesis and studied by using electron holography and geometric phase analysis techniques. These crystal defects consequently demonstrated a solid possibility for tuning the optical band-gaps of Ag2Se QDs, and thereby enhancing the visible-light-driven water splitting and hydrogen evolution performance of Ag2Se QD-sensitized TiO2 photocatalysts.

Graphical abstract: Crystal defect-mediated band-gap engineering: a new strategy for tuning the optical properties of Ag2Se quantum dots toward enhanced hydrogen evolution performance

Supplementary files

Article information

Article type
Communication
Submitted
03 7 2015
Accepted
28 8 2015
First published
31 8 2015

J. Mater. Chem. A, 2015,3, 20051-20055

Crystal defect-mediated band-gap engineering: a new strategy for tuning the optical properties of Ag2Se quantum dots toward enhanced hydrogen evolution performance

Q. Cao, Y. Cheng, H. Bi, X. Zhao, K. Yuan, Q. Liu, Q. Li, M. Wang and R. Che, J. Mater. Chem. A, 2015, 3, 20051 DOI: 10.1039/C5TA04978D

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