Publications by authors named "Amir Humayun"
Charge Transfer in n-FeO and p-α-FeO Nanoparticles for Efficient Hydrogen and Oxygen Evolution Reaction.
Nanomaterials (Basel)
September 2024
This study aims to explore the n-FeO and p-α-FeO semiconductor nanoparticles in hydrogen (HER) and oxygen (OER) evolution reactions and a combined full cell electrocatalyst system to electrolyze the water. We have observed a distinct electrocatalytic performance for both HER and OER by tuning the interplay between iron oxidation states Fe and Fe and utilizing phase-transformed iron oxide nanoparticles (NPs). The Fe rich n-FeO NPs exhibited superior HER performance compared to p-α-FeO and Fe(OH) NPs, which is attributed to the enhancement in n-type semiconducting nature under HER potential, facilitating the electron transfer for the reduction in H ions.
View Article and Find Full Text PDFHarnessing solar energy can be efficiently used to generate hydrogen by photochemical water splitting, which is a sustainable and environmentally benign energy source. Here, a unique visible-light-driven CoTiO@g-CN (CTOCN)-based photoanode interface has been optimized and developed with modification to follow the type II heterojunction for the enhancement of photoelectrochemical water splitting. Initially, a graphitic carbon nitride-loaded CoTiO (with 10 wt % g-CN) composite was obtained using a one-pot solvothermal method.
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- A new chemical compound called H2P was created, which shows strong selectivity and sensitivity for detecting zinc (Zn) and ATP ions through various analytical techniques.
- The binding interactions and mechanisms of H2P with Zn and ATP were thoroughly studied using advanced methods, leading to its successful application in live cell imaging and versatile detection formats like paper strips and cotton swabs.
- Additionally, H2P forms a zinc complex (H2P-ZnCl) that reveals unique properties for detecting other substances and demonstrates enhanced electrical behaviors, making it useful for various biological and chemical applications.
Using nitrogen-enhanced carbon quantum dots (N-CQDs) on a coated graphite sheet (GS) substrate (N-CQDs/GS), a simple strategy for the electrochemical detection of human epidermal growth factor receptor 2 (HER2), a breast cancer biomarker, was investigated. The bovine serum albumin (BSA)-modified HER2 Antibody/N-CQDs/GS immunoelectrode enabled excellent activity preservation for the biosensor, while the GS electrode provided a highly stable and conducting substrate. With a linear response range of 0.
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