Cytotoxicity is a severe problem for cadmium sulfide nanoparticles (CSNPs) in biological systems. In this study, mercaptoacetic acid-coated CSNPs, typical semiconductor Q-dots, were synthesized in aqueous medium by the arrested precipitation method. Then, amino-terminated polyethylene glycol (PEG) was conjugated to the surface of CSNPs (PCSNPs) in order to introduce amino groups to the surface....

in order to investigate the effect of cd and zn on uptake, concentration and the translocation factor of the cd and zn in the rice plant, a factorial experiment was conducted with four factors including two rice cultivars of vandana and hashemi, two waterlogged and non-waterlogged conditions and three levels of zn and cd (0, 5 and 10 mg kg-1 soil). the experiment was carried out in a randomized...

Cadmium sulfide and lead sulfide semiconducting nanoparticle chains have been fabricated for the first time by exploiting a general property of proteins, amyloidogenicity. The diameter of the CdS and PbS nanowires was tuned in the range of ∼50 to ∼350 nm by changing the process parameters. The nanoparticle chains were characterized by field emission scanning electron microscopy, UV-visible spec...

Background: Both the cubic (zinc blend) and hexagonal (wurtzite) phases of cadmium sulphide are semiconductors due to presence a row four equally spaced Cd atoms surrounded by one S atom. crystal forms Cd-S have very similar nearest neighbor bond lengths. Material Methods: The sulfide compound was prepared at concentration 1 M dissolving percentage weight each cadmium(13.326g) sulfur (3.806g) i...

Zinc sulfide clusters were synthesized and characterized at low micromolar concentrations to assess the effect of metal-sulfide ligands on metal toxicity to aquatic organisms in oxic environments. Recommended preparation times are greater than 2 h initial reaction of equimolar sodium sulfide and zinc nitrate, followed by oxic aeration for 3 d. Ionic strength, pH, and anoxic stabilization time w...

We report a hybrid approach for photonic systems that combines chemically synthesized single nanowire emitters with lithographically defined photonic crystal and racetrack microresonator structures. Finite-difference time-domain calculations were used to design nanowire photonic crystal structures where the photonic band gap overlaps the electronic band gap of the nanowire. Photoluminescence (P...

background: cadmium (cd) is a heavy metal that has widespread use. it enters the food chain in different ways, including soil and water. cadmium can cause dysfunction of different body organs. zinc (zn) and magnesium (mg) supplementation can have protective effects against cadmium toxicity due to their antagonistic and antioxidants properties. this study examines the influence of supplemental z...

Journal of Physical Chemistry is published by the American Chemical Society. 1155 Sixteenth Street N.W., Washington, DC 20036 Ultrasmall particles of cadmium selenide and cadmium sulfide formed in Nafion by an ion-dilution technique Eugene S. Smotkin, R. Malcolm. Brown, L. K. Rabenberg, K. Salomon, Allen J. Bard, Alan. Campion, Marye Anne. Fox, Thomas E. Mallouk, Stephen E. Webber, and John M. ...