the heterogeneous photo-fenton degradation of crystal violet under visible light has been investigated usingcopper modified iron oxide. the photocatalyst has been prepared by coprecipitation method. the rate ofphotocatalyic degradation of dye was monitored spectrophotometrically. it has been observed thatphotocatalytic degradation follows pseudo first order kinetics. the effect of various param...

here, in situ synthesis of nano zinc oxide, along with aminolysis of polyester fabric, has simultaneously been carried out by using triethanol amine (tea) and zinc acetate. the zno nano particles (nps) were formed and stabilized on the fabric surface by amine compound at 130 °c for 1 h. the synthesis of nano zno particles on the polyester fabric were confirmed by x-ray diffraction (xrd) pattern...

Nanostructured hematite thin films are doped with zirconium successfully and also modified by introducing CNT using sol-gel method for their implementation as photo-electrode in photo-electrochemical (PEC) cell for hydrogen generation. XRD, UV-visible spectroscopy and PEC study techniques are used to characterize the thin films. The PEC responses of thin films are improved by introducing carbon...

In the presence of asymmetric potential barriers, such as those created by imprint fields, ferroelectric polarization can be reversed light due to photoinduced suppression polarization. Both thermal effects and photocarrier-induced screening may agree with this experimental observation, challenging its understanding. Here, we explore light-induced switching in BaTiO3 thin films. Time-dependent ...

The dihydroazulene/vinylheptafulvene (DHA/VHF) couple presents a photo-/thermo-switch that has attracted interest for the development of molecular solar thermal energy storage systems. Here we present synthesis and optical as well switching properties DHA derivatives incorporating alkyne norbornadiene (NBD) substituents at position C2. corresponding VHF isomers exhibited remarkably long lifetim...

Triggering physiological responses with a light switch has become reality the development of smart molecular probes such as photolabile protecting groups (PPGs), able to “uncage” biological ligands on demand. To make virtually harmless and confine excitation single-cell level, caged can be released using two-photon (2P) absorption 2P microscopy red/infrared light. This exceptional level precisi...

this paper presents a novel control method to improve the efficiency of low-voltage dc-dc converters at light loads. pulse width modulation (pwm) converters have poor efficiencies at light loads, while pulse frequency modulation (pfm) control is more efficient for the same cases. switching losses constitute a major portion of the total power loss at light loads. to decrease the switching losses...

The aim of this work is to compare the antimicrobial efficiency of aminolevulinic acid-based photosensitization (ALA-photo) and chlorophyllin-based photosensitization (CHL-photo) against Gram-positive Listeria monocytogenes and Gram-negative Salmonella enterica, to assess some quantitative inactivation parameters of their survival curves and to propose a strategy for their effective inactivatio...