Comment on Gold-Nanobipyramid Enhanced Hydrogen Sensing with Plasmon Red Shifts Reaching 140 nm at 2 vol% Hydrogen Concentration

TL;DR

This paper critiques a recent study on gold nanobipyramid-based hydrogen sensors, clarifying that the original claims about catalytic activity tuning due to electronic effects are unsupported and correcting a mis-citation.

Contribution

It provides a critical analysis disputing prior claims about the mechanism behind hydrogen sensing enhancements in gold nanobipyramid structures.

Findings

The original claim about electronic effects is unsupported.

An important reference was mis-cited in the original paper.

The critique clarifies the actual mechanisms involved.

Abstract

In the recently-published paper "Gold Nanobipyramid-Enhanced Hydrogen Sensing with Plasmon Red Shifts Reaching 140 nm at 2 vol% Hydrogen Concentration" by Yip et al.,[1] the authors claimed that the tuning of catalytic activities of the synthesized Au nanobipyramids(NBP)@Pd nanostructures was mainly due to the electronic effect. Here, we show that this claim is unsupported and an important reference was mis-cited in this commented publication.