A5074414756- Graphene research and applications
- Electrocatalysts for Energy Conversion
- Graphene and Nanomaterials Applications
- Nanocluster Synthesis and Applications
- Carbon and Quantum Dots Applications
- Quantum Dots Synthesis And Properties
- Gold and Silver Nanoparticles Synthesis and Applications
- 2D Materials and Applications
- Advancements in Battery Materials
- Electrochemical Analysis and Applications
- Advanced battery technologies research
- Conducting polymers and applications
- Molecular Junctions and Nanostructures
- Fuel Cells and Related Materials
- Advanced biosensing and bioanalysis techniques
- Adsorption and biosorption for pollutant removal
- Ga2O3 and related materials
- Electrochemical sensors and biosensors
- Advanced Materials and Mechanics
- Additive Manufacturing and 3D Printing Technologies
- ZnO doping and properties
- Advanced Photocatalysis Techniques
- Perovskite Materials and Applications
- Thermal properties of materials
- Chalcogenide Semiconductor Thin Films
The University of Texas at El Paso
2018-2025
Clemson University
2016-2018
University of Toledo
2017-2018
Rice University
2015-2016
China University of Petroleum, Beijing
2015
University of Illinois Chicago
2015
Kansas State University
2012-2013
Indian Institute of Technology Madras
2006-2012
An investigation was initiated to examine the effects of nanoscale zinc oxide particles on plant growth and development. In view widespread cultivation peanut in India other parts globe potential influence its growth, this chosen as model system. Peanut seeds were separately treated with different concentrations (ZnO) chelated bulk sulfate (ZnSO4) suspensions (a common supplement), respectively effect treatment had seed germination, seedling vigor, flowering, chlorophyll content, pod yield...
This review summarized the recent progress in synthesis, characterization, properties, photoluminescence mechanism and biological applications of carbon dots.
Comprehensive knowledge over the shape of nanomaterials is a critical factor in designing devices with desired functions. Due to this reason, systematic efforts have been made synthesize materials diverse nanoscale regime. Anisotropic are class which their properties direction-dependent and more than one structural parameter needed describe them. Their unique fine-tuned physical chemical make them ideal candidates for devising new applications. In addition, assembly ordered one-dimensional...
Abstract Functionalization of graphene is essential to interface it with other moieties expand the scope its electrical/electronic applications. However, chemical functionalization and/or molecular interactions on sensitively modulate electrical properties. To evaluate and take advantage properties functionalized graphene, important understand how attributes (such as carrier scattering, concentration, charge polarity, quantum‐capacitance enhanced doping, energy levels, transport mechanisms,...
The rational design of multifunctional catalysts that use non-noble metals to facilitate the interconversion between H2, O2, and H2O is an intense area investigation. Bimetallic nanosystems with highly tunable electronic, structural, catalytic properties depend on their composition, structure, size have attracted considerable attention. Herein, we report synthesis bimetallic nickel-copper (NiCu) alloy nanoparticles confined in a sp2 carbon framework exhibits trifunctional toward hydrogen...
Ultrathin (0.3-3 nm) metal dichalcogenides exhibit confinement of carriers, evolution band-structure and photophysical properties with thickness, high on/off rectification (in MoS2, WS2, so forth) thermal absorption. Here, we leverage the stable sulfur/nobel-metal binding to incorporate highly capacitive gold nanoparticles (Au NPs) onto MoS2 raise effective gate-voltage by an order magnitude. Functionalization is achieved via both diffusion limited aggregation instantaneous reaction...
This paper describes a green method for the synthesis of graphenic material from cane sugar, common disaccharide. A suitable methodology was introduced to immobilize this on sand without need any binder, resulting in composite, referred as graphene composite (GSC). Raman spectroscopy confirmed that is indeed nature, having G and D bands at 1597 1338 cm–1, respectively. It effectively removes contaminants water. Here, we use rhodamine 6G (R6G) model dye chloropyrifos (CP) pesticide...
Unprecedented adsorption of chlorpyrifos (CP), endosulfan (ES), and malathion (ML) onto graphene oxide (GO) reduced (RGO) from water is reported. The observed capacities CP, ES, ML are as high ~1200, 1100, 800 mg g(-1) , respectively. Adsorption found to be insensitive pH or background ions. adsorbent reusable can applied in the field with suitable modifications. A first-principles pseudopotential-based density functional analysis graphene-water-pesticide interactions showed that mediated...
Platinum (Pt)-based-nanomaterials are currently the most successful catalysts for oxygen reduction reaction (ORR) in electrochemical energy conversion devices such as fuel cells and metal-air batteries. Nonetheless, Pt have serious drawbacks, including low abundance nature, sluggish kinetics, very high costs, which limit their practical applications. Herein, we report first rationally designed nonprecious Co–Cu bimetallic metal–organic framework (MOF) using a low-temperature hydrothermal...
This paper envisages a mechanism of heat conduction behind the thermal conductivity enhancement observed in graphene nanofluids. Graphene nanofluids have been prepared, characterized, and their was measured using transient hot wire method. The enhancements are substantial even at lower concentrations not predicted by classical Maxwell model. also shows strong temperature dependence which is unlike its carbon predecessors, nanotube (CNT) oxide It seen that magnitude in-between CNT...
Because of the edge states and quantum confinement, shape size graphene nanostructures dictate their electrical, optical, magnetic chemical properties. The current synthesis methods for do not produce large quantities that are easily transferable to different substrates/solvents, controlled shapes, or allow control GN dimensions over a wide range (up 100 nm). Here we report production with predetermined shapes (square, rectangle, triangle ribbon) dimensions. This is achieved by...
The unique economical design of sulfur and nitrogen co-doped carbon dots with high photoluminescence quantum yield superior performance for environmental Hg<sup>2+</sup>detection.
Heteroatom doped carbon dots (CDs), with high photoluminescence quantum yield (PLQY), are of keen interest in various applications such as chemical sensors, bio-imaging, electronics, and photovoltaics. Zinc, an important element assisting the electron-transfer process essential trace for cells, is a promising metal dopant CDs, which could potentially lead to multifunctional CDs. In this contribution, we report single-step, efficiency, hydrothermal method synthesize Zn-doped (Zn-CDs) superior...
Advanced membrane systems with excellent permeance are important for controllable separation processes, such as gas and water purification.
Fullerene-based low-dimensional (LD) heterostructures have emerged as excellent energy conversion materials. We constructed van der Waals 1T-MoS2/C60 0D-2D via a one-pot synthetic approach for catalytic hydrogen generation. The interfacial 1T-MoS2–C60 and C60–C60 interactions well their electrocatalytic properties were finely controlled by varying the weight percentages of fullerenes. 1T-MoS2 platforms provided novel template formation C60 nanosheets (NSs) within very narrow fullerene...
The two-dimensional (2D) electron cloud, flexible carbon–carbon bonds, chemical modifiability, and size-dependent quantum–confinement capacitance makes graphene nanostructures (GN) a widely tunable material for electronics. Here we report the oxidation-led edge-roughening cleavage of long nanoribbons (GNRs) (150 nm wide) synthesized via nanotomy (nanoscale cutting) graphite (with 2 edged diamond knife) to produce quantum dots (GQD). These GQDs (∼100–200 nm) selectively interfaced with...
Multifunctional graphene oxide/reduced oxide (GO/RGO) composites were prepared through electrostatic interaction using biocompatible ingredients. Different functionalities added to GO/RGO by anchoring materials such as native lactoferrin (NLf), NLf protected Au clusters (designated Au@NLf), chitosan (Ch) and combinations thereof. Anchoring of Ch enhances the antibacterial property RGO/GO. The addition RGO/GO not only helped in forming stable dispersions but also fabricating large (cm2) area...
A facile and reversible method for assembling disassembling gold nanorods (GNRs) using a common chelating agent, ethylenediaminetetraacetic acid (EDTA), is reported. Assembly was induced by the electrostatic interaction between cetyltrimethylammonium bromide (CTAB) bilayer present on GNRs EDTA. At lower concentrations of EDTA, end-to-end assembled chains were formed. higher these come together to form sheet-like structures. The complex CTAB being labile, disassembles in presence stronger...
Cu-doped carbon dots were synthesized by a one-step hydrothermal method and used as “turn-off” fluorescent probe in the detection of Fe<sup>3+</sup> ions.
As a class of the heteroatom-doped carbon materials, metal charge-transfer doped dots (CDs) exhibited an excellent optical performance and were widely used as fluorescent probes. To improve fluorescence quantum yield (QY) remains one fundamental challenging issues in field. Herein, we prepared novel manganese CDs (Mn-CDs), which ultrahigh 54%, highest for metal-doped CDs. Various spectroscopic measurements revealed situ change dopant oxidation state during synthesis. Our further study...
The walnut peptides and zinc ions were combined to generate a peptides-zinc complex (WP1-Zn) with enhanced antiproliferative ability as well reduced toxicity. result indicated that Zn successfully WP1 through Zn–N Zn–O covalent bonds. WP1-Zn compounds exhibited strong against the selected human cell lines, especially MCF-7 cells, whose survival rate 20.02% after exposure 300 μg/mL of for 48 h. inhibited proliferation inducing apoptosis cycle arrest. results induced via ROS triggered...