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Facile Synthesis and Characterization of Novel CdS/BiOI Heterojunctions with Enhanced Visible-Light Photocatalytic Performances

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Fang S., Lu M., Zhou M., Li Z., Xu S., Peng Y., Li Q., Lu D.

Acta Physica Polonica A

2017

vol. 131

issue 2

263-270

Novel CdS/BiOI heterojunction photocatalysts were successfully prepared by facile method. The as-prepared samples were characterized by transmission electron microscopy, field-emission scanning electron microscopy, X-ray diffraction, the Raman spectroscopy, UV-vis diffuse reflectance spectra, the Fourier transform infrared spectra, and photoluminescence. It was found that CdS nanoparticles were uniformly distributed on the surface of BiOI microspheres. The photodegradation tests showed that the photocatalytic efficiency was increased at first and then decreased when further increasing CdS content in the nanocomposites. The highest activity was obtained by 3%-CdS/BiOI nanocomposites. The enhanced photocatalytic performances were attributed to the matched band potentials of CdS and BiOI, which resulted in the efficient separation of photogenerated electron-hole pairs. Based on the experimental results, a reasonable photocatalytic mechanism of CdS/BiOI photocatalysts was also proposed.

Vps41, a protein involved in lysosomal trafficking, interacts with caspase-8

100%

Wang L., Pan X., He L., Zhang R., Chen W., Zhang J., Lu M., Hua Z.-C.

Acta Biochimica Polonica

2013

vol. 60

issue 1

37-42

Caspase-8 is a member of the cysteine-aspartic acid protease (caspase) family which plays a central role in apoptosis and development. We screened caspase-8 interacting proteins from mouse T-cell lymphoma and 7.5-day embryo cDNA libraries by yeast two-hybrid system and obtained eleven positive clones, including Vacuolar protein sorting 41 (Vps41), a protein involved in trafficking of proteins from the late Golgi to the vacuole. The interaction of Vps41 with caspase-8 was confirmed by co-immunoprecipitation (co-IP) and co-localization studies in HEK293T cells. Co-IP experiments also showed that Vps41 binds to the p18 subunit of caspase-8 through its WD40 region and RING-finger motif. Furthermore, we found that overexpression of Vps41 promotes Fas-induced apoptosis in A549 human lung adenocarcinoma cells. The cleavage of caspase-3, a caspase-8 downstream effector, was increased when cells were transfected with Vps41-overexpressing plasmid. Together, these results suggest a novel interaction of caspase-8 with Vps41 and provide a potential role of Vps41 beyond lysosomal trafficking.

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1 Acta Biochimica Polonica

1 Acta Physica Polonica A

1 2017

1 2013

2 Lu M.

1 Chen W.

1 Fang S.

1 He L.

1 Hua Z.-C.

1 Li Q.

1 Li Z.

1 Lu D.

1 Pan X.

1 Peng Y.

1 Wang L.

1 Xu S.

1 Zhang J.

1 Zhang R.

1 Zhou M.

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Facile Synthesis and Characterization of Novel CdS/BiOI Heterojunctions with Enhanced Visible-Light Photocatalytic Performances

Vps41, a protein involved in lysosomal trafficking, interacts with caspase-8