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- 저자 : Jiangwei Yu (검색결과 2 건)
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Chunyun Hou,Jiangwei Yu,Jin-Rui Ding,Weiqiang Fan,Hongye Bai,Dongbo Xu,Wei-dong Shi 한국공업화학회 2021 Journal of Industrial and Engineering Chemistry Vol.104 No.-
The unsatisfactory solar light absorption of WO3 and poor charge separation of BiVO4 are main limits fortheir use in photoelectrochemical (PEC) water oxidation. Coupling WO3 with BiVO4 has been consideredas a feasible way to improve PEC performance by taking complementary advantages of them. In thiswork, we obtained nanoflake-structured WO3 by hydrothermal growth with post-annealing. The effectof process variables on morphology and resultant performance were investigated. Electrodepositiongrowth was utilized to deposit BiVO4 onto WO3 forming WO3/BiVO4 heterojunction thin films. PorousBiVO4 with wormlike morphology was tightly coupled and well-distributed onto WO3 nanoflakes. Theoptimized best-performing WO3/BiVO4 photoanode exhibits higher photocurrent density than that summationof bare WO3 and BiVO4 over entire range of applied potential. This enhancement is mainly attributedto the effective charge separation at WO3/BiVO4 interface, which is confirmed throughelectrochemical impedance spectra (EIS) measurements, respectively. Our work provides a referableapproach for the growth of WO3/BiVO4 heterojunction photoanode with enhanced PEC performance.
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Jiang, Wei,Huang, Yong,Wang, Jing-Peng,Yu, Xiao-Yun,Zhang, Lin-Yi Asian Pacific Journal of Cancer Prevention 2013 Asian Pacific journal of cancer prevention Vol.14 No.8
Background: Artesunate, extracted from Artemisia annua, has been proven to have anti-cancer potential. Allicin, diallyl thiosulfinate, the main biologically active compound derived from garlic, is also of interest in cancer treatment research. This object of this report was to document synergistic effects of artesunate combined with allicin on osteosarcoma cell lines in vitro and in vivo. Methods: After treatment with artesunate and allicin at various concentrations, the viability of osteosarcoma cells was analyzed by MTT method, with assessment of invasion and motility, colony formation and apoptosis. Western Blotting was performed to determine the expression of caspase-3/9, and activity was also detected after drug treatment. Moreover, in a nude mouse model established with orthotopic xenograft tumors, tumor weight and volume were monitored after drug administration via the intraperitoneal (i.p.) route. Results: The viability of osteosarcoma cells in the combination group was significantly decreased in a concentration and time dependent manner; moreover, invasion, motility and colony formation ability were significantly suppressed and the apoptotic rate was significantly increased through caspase-3/9 expression and activity enhancement in the combination group. Furthermore, suppression of tumor growth was evident in vivo. Conclusion: Our results indicated that artesunate and allicin in combination exert synergistic effects on osteosarcoma cell proliferation and apoptosis.
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