A5083940498- Nanoparticles: synthesis and applications
- Heavy metals in environment
- Geochemistry and Elemental Analysis
- Plant Stress Responses and Tolerance
- Plant Micronutrient Interactions and Effects
- Adsorption and biosorption for pollutant removal
- Heavy Metals in Plants
- Arsenic contamination and mitigation
- Graphene and Nanomaterials Applications
- Chromium effects and bioremediation
- Analytical chemistry methods development
- Advanced Nanomaterials in Catalysis
- Carbon and Quantum Dots Applications
- Aluminum toxicity and tolerance in plants and animals
- Clay minerals and soil interactions
- Radioactive element chemistry and processing
- Iron oxide chemistry and applications
- Coal and Its By-products
- Environmental remediation with nanomaterials
- Nanomaterials for catalytic reactions
- Selenium in Biological Systems
- Electrochemical Analysis and Applications
- Microplastics and Plastic Pollution
- Analytical Chemistry and Chromatography
- Medicinal Plants and Neuroprotection
The University of Texas at El Paso
2016-2025
Systems Engineering Research Center
2020-2024
U.S. National Science Foundation
2021-2023
Rice University
2019-2022
University of California, Santa Barbara
2012-2021
The University of Texas at Austin
2003-2021
Xinjiang Agricultural University
2019
Utah State University
2019
Texas A&M University System
2019
United States University
2015-2018
The preparation and study of quantum dots wires play a very important role in nanotechnology. In this particular study, we report on the uptake silver by living alfalfa plants. X-ray absorption spectroscopy transmission electron microscopy (TEM) studies corroborated metal plants from silver-rich solid medium subsequent formation nanoparticles. Silver nanoparticle alignment, structure, coalescence were observed using TEM with an atomic resolution analysis. Dark field image showed connection...
In modern nanotechnology one of the most exciting areas is interaction between inorganic quantum dots and biological structures. For instance gold clusters surrounded by a shell organic ligands covalently attach to proteins or other substances can be used for labeling in structural biology. present report we show possibility using live plants fabrication nanoparticles. Alfalfa were grown an AuCl4 rich environment. The absorption Au metal was confirmed X-ray studies (XAS), transmission...
Concern and interest related to the effects of nanomaterials on living organisms are growing in both scientific public communities. Reports have described toxicity nanoparticles (NPs) micro- macro-organisms, including some plant species. Nevertheless, authors' knowledge there no reports biotransformation NPs by edible terrestrial plants. Here, shown for first time, is evidence pertaining ZnO CeO(2) seedlings. Although did not affect soybean germination, they produced a differential effect...
Based on previously published hydroponic plant, planktonic bacterial, and soil microbial community research, manufactured nanomaterial (MNM) environmental buildup could profoundly alter soil-based food crop quality yield. However, thus far, no single study has at once examined the full implications, as studies have involved growing plants to maturity in MNM-contaminated field soil. We done so for soybean, a major global commodity crop, using farm amended with two high-production metal oxide...
Nanoparticles are a state of matter that has properties different from either molecules or bulk solids. In the present work, we review shape and structure nanometer-sized particles; several shapes discussed, such as octahedron truncated octahedron, icosahedron, Marks decahedron, “star-like” rounded decahedron regular decahedron. Experimental high-resolution transmission electron microscopy (TEM) images each type particle presented together with Fast Fourier Transform model particle. We...
The transfer of nanoparticles (NPs) into the food chain through edible plants is great concern. Cucumis sativus L. a freshly consumed garden vegetable that could be in contact with NPs biosolids and direct agrichemical application. In this research, cucumber were cultivated for 150 days sandy loam soil treated 0 to 750 mg TiO2 kg–1. Fruits analyzed using synchrotron μ-XRF μ-XANES, ICP-OES, biochemical assays. Results showed catalase leaves increased (U mg–1 protein) from 58.8 control 78.8...
With the increased use of engineered nanomaterials such as ZnO and CeO2 nanoparticles (NPs), these materials will inevitably be released into environment, with unknown consequences. In addition, potential storage NPs or their biotransformed products in edible/reproductive organs crop plants can cause them to enter food chain next plant generation. Few reports thus far have addressed entire life cycle grown NP-contaminated soil. Soybean (Glycine max) seeds were germinated full maturity...
Fate, transport, and possible toxicity of cerium oxide nanoparticles (nanoceria, CeO(2)) are still unknown. In this study, seeds alfalfa (Medicago sativa), corn (Zea mays), cucumber (Cucumis sativus), tomato (Lycopersicon esculentum) were treated with nanoceria at 0-4000 mg L(-1). The uptake oxidation state within tissues determined using inductively coupled plasma-optical emission spectroscopy (ICP-OES) X-ray absorption (XAS), respectively. germination rate root elongation also determined....
Previous studies have reported the uptake of cerium oxide nanoparticles (nCeO2) by plants, but their physiological impacts are not yet well understood. This research was aimed to study impact nCeO2 on oxidative stress and antioxidant defense system in germinating rice seeds. The seeds were germinated for 10 days suspension at 62.5, 125, 250, 500 mg L–1 concentrations. Ce uptake, growth performance, levels, membrane damage, responses seedlings analyzed. tissues increased with concentrations,...
There is lack of information about the effects nanoparticles (NPs) on cucumber fruit quality. This study aimed to determine possible impacts carbohydrates, proteins, mineral nutrients, and antioxidants in plants grown soil treated with CeO2 ZnO NPs at 400 800 mg/kg. Fourier transform infrared spectroscopy (FTIR) was used detect changes functional groups, while ICP-OES μ-XRF were quantify map distribution nutrient elements, respectively. Results showed that none NP concentrations affected...
With the dramatic increase in nanotechnologies, it has become increasingly likely that food crops will be exposed to excess engineered nanoparticles (NPs). In this study, cucumber plants were grown full maturity soil amended with either CeO2 or ZnO NPs at concentrations of 0, 400, and 800 mg/kg. Chlorophyll gas exchange monitored, physiological markers recorded. Results showed that, tested, neither nor impacted plant growth, exchange, chlorophyll content. However, mg/kg treatment, reduced...
Currently, most of the nanotoxicity studies in plants involve exposure to nanoparticles (NPs) through roots. However, interact with atmospheric NPs leaves, and our knowledge on their response this contact is limited. In study, hydroponically grown cucumber (Cucumis sativus) were aerially treated either nano ceria powder (nCeO2) at 0.98 2.94 g/m3 or suspensions 20, 40, 80, 160, 320 mg/L. Fifteen days after treatment, analyzed for Ce uptake by using ICP-OES TEM. addition, activity three stress...
With their growing production and application, engineered nanoparticles (NPs) are increasingly discharged into the environment. The released NPs can potentially interact with pre-existing contaminants, leading to biological effects (bioaccumulation and/or toxicity) that poorly understood. Most studies on focus single analyte exposure; existing literature joint toxicity of co-existing contaminants is rather limited but beginning develop rapidly. This first review paper evaluating current...
The rapid development of nanotechnology will inevitably release nanoparticles (NPs) into the environment with unidentified consequences. In addition, potential toxicity CeO(2) NPs to plants and possible transfer food chain are still unknown. Corn (Zea mays) were germinated grown in soil treated at 400 or 800 mg/kg. Stress-related parameters, such as H(2)O(2), catalase (CAT), ascorbate peroxidase (APX) activity, heat shock protein 70 (HSP70), lipid peroxidation, cell death, leaf gas exchange...