Tso-Fu Mark Chang

Introduction Click to copy section linkSection link copied! Driven by the growing demand for environmental remediation and sustainable energy, semiconductor-based photocatalysis has garnered significant research interest in the last two decades. Identifying a photocatalytic platform that is both robust and practically efficient remains a key challenge.

1. Introduction Gas sensor technologies are extensively used for a wide range of applications, such as Heating/Ventilation/Air/Conditioning (HVAC) systems, the semiconductor industry, smart cities, security, environmental monitoring, the oil and gas industry, automotive and transportation applications, the medical industry, smart agriculture, etc. [1,2,3,4]. The market size of gas sensors reached $3.16 billion in 2022 and is projected to surpass approximately $6.2 billion by 2030 [1,2,3,4].

Abstract Near infrared energy remains untapped toward the maneuvering of entire solar spectrum harvesting for fulfilling the nuts and bolts of solar hydrogen production. We report the use of Au@Cu7S4 yolk@shell nanocrystals as dual-plasmonic photocatalysts to achieve remarkable hydrogen production under visible and near infrared illumination. Ultrafast spectroscopic data reveal the prevalence of long-lived charge separation states for Au@Cu7S4 under both visible and near infrared excitation.