Zhao-hong Zhang

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A new upconversion luminescence agent, 40CdF2 x 60BaF2 x 0.8Er2O3, was synthesized and its fluorescent spectra were determined. This upconversion luminescence agent can emit five upconversion fluorescent peaks shown in the fluorescent spectra whose wavelengths are all below 387 nm under the excitation of 488 nm visible light. This upconversion luminescence(More)
The damage of bovine serum albumin (BSA) molecules under ultrasonic irradiation in the presence of nano-sized silicon dioxide (SiO2) particles was studied by UV-Vis and fluorescence spectra. In addition, the influences of ultrasonic irradiation time, nano-sized SiO2 addition amount, solution acidity (pH) and ultrasonic irradiation power on the damage of BSA(More)
Tributyltin (TBT) compound is one of the main components of antifouling paint for boats and ships. The interaction of TBT compound and bovine serum albumin (BSA) was investigated by ultraviolet, fluorescence and circular dichroism (CD) spectra. The influences of concentration, acidity and organic solvent were also studied. The results showed that the(More)
A pot experiment was conducted to study the effects of applying sewage sludge on the chemical form distribution of heavy metals (Cd, Pb, Cu and Zn) in soil and the transfer and accumulation of the heavy metals in soil-plant (ryegrass) system. With the application of sewage sludge, the contents of bioavailable Cd and Zn in soil increased significantly but(More)
A novel upconversion luminescence agent 40CdF2 x 60BaF2 x 1.6Er2O3 was synthesized and the fluorescent spectrum was determined. This upconversion luminescence agent can emit five upconversion fluorescent peaks whose wavelengths are all below 387nm under the excitation of 488 nm visible light. This upconversion luminescence agent was mixed into nanometer(More)
Ethyl violet was chose as a model compound in this paper. The ultrasound of 50 W power and 40 kHz frequency was used as an irradiation source to induce TiO2 particles. We have compared sonocatalytic degradation ratios in the presence of dispersion TiO2 and suspension TiO2 sonocatalysts. It was found that the degradation effect in the presence of dispersion(More)
The nanometer and ordinary anatase titanium dioxide (TiO2) powders were adopted as the sonocatalysts for the degradation of methyl orange used as a model compound for the first time. It was found that the sonocatalytic degradation effect of methyl orange in the presence of TiO2 powder were much better than that without TiO2, but the sonocatalytic activity(More)
A novel time-resolved X-ray excited optical luminescence (TRXEOL) experiment system was developed for X ray absorption fine structure spectroscopy(XAFS) beamline at Shanghai Synchrotron Radiation Facility (SSRF). The TRXEOL system is composed of three parts: timing system, spectrometer system and nuclear instrument module (NIM) system. These three systems(More)
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