A5020108428- Electrocatalysts for Energy Conversion
- Advanced Photocatalysis Techniques
- MXene and MAX Phase Materials
- TiO2 Photocatalysis and Solar Cells
- 2D Materials and Applications
- Copper-based nanomaterials and applications
- Quantum Dots Synthesis And Properties
- Chalcogenide Semiconductor Thin Films
- Machine Learning in Materials Science
- Fuel Cells and Related Materials
- Advancements in Battery Materials
- Zeolite Catalysis and Synthesis
- Supercapacitor Materials and Fabrication
- Perovskite Materials and Applications
- ZnO doping and properties
- Graphene research and applications
Rutgers, The State University of New Jersey
2016-2020
The University of Texas at Austin
2012-2013
Efficient exfoliation of graphite in solutions to obtain high-quality graphene flakes is desirable for printable electronics, catalysis, energy storage, and composites. Graphite oxide with large lateral dimensions has an yield ~100%, but it not been possible completely remove the oxygen functional groups so that reduced form (GO; form: rGO) remains a highly disordered material. Here we report simple, rapid method reduce GO into pristine using 1- 2-second pulses microwaves. The structural...
Integration of organic/inorganic hybrid perovskites with metallic or semiconducting phases 2D MoS2 nanosheets via solution processing is demonstrated. The results show that the collection charge carriers strongly dependent on electronic properties showing high responsivity and phase exhibiting on/off ratios.
Single atom catalysts provide exceptional activity. However, measuring the intrinsic catalytic activity of a single in real electrochemical environments is challenging. Here, we report vacancy for electrocatalytically evolving hydrogen two-dimensional (2D) MoS2. Surprisingly, find that per not constant but increases with its concentration, reaching sudden peak at 5.7 × 1014 cm–2 where turn over frequency and Tafel slope atomic was found to be ∼5 s–1 44 mV/dec, respectively. At this also...
BiSI (indirect band gap = 1.57 eV) is a recently discovered photoelectrode material possessing promising optical properties for use in alternative thin film solar cells. In this work, we study the effects of selenium doping on and also demonstrate incorporation BiS1–xSexI films into both electrochemical solid state Tuning by substituting sulfur was accomplished various amounts SeO2 thiourea spray pyrolysis precursor solutions. This strategy employed to reduce direct from 1.63 eV as low 1.48...
We report a facile, scalable, and low cost chemical bath deposition of vertically aligned TiO2 nanoplatelet arrays on various substrates including fluorine-doped tin oxide coated glass their applications for photoelectrochemical (PEC) water splitting dye sensitized solar cells. The consisting single crystal rutile nanoplatelets with heights (film thicknesses) up to 1 μm, lengths 130 nm, widths ∼5 nm were grown via controlling oxidation hydrolysis TiCl3 at pH (0.71–0.85) concentration (8–40...
A total of 35 elements were investigated as single component metal oxides and dopants for TiO2 use in dye-sensitized solar cells (DSCs). An array dispenser scanner system was utilized high-throughput testing the hundreds doped compositions. The optimal dopant concentrations identified summarized according to their effect on short circuit current (ISC) open voltage (VOC). New candidates discovered, including several post-transition metals, which showed improvements DSC performance when...
Niobium-modified TiO2 hierarchical spherical micrometer-size particles, which consist of many nanowires, are synthesized by solvothermal synthesis and studied as photoelectrodes for water photo-oxidation dye-sensitized solar cell (DSSC) applications. Incorporation Nb leads to a rutile-to-anatase phase transition in the spheres (HSs), with anatase percentage increasing from 0% pristine HSs 47.6% 1.82 at.% Nb-incorporated sample. significant improvements photocurrents reaching 70.5 μA cm(-2)...