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Photocatalysis is one of the most effective ways to solve environmental problems by solving pollutants. This article designed and prepared a conjugated system of 2,4,6-triaminopyrimidine-g-C3N4 (TAP-CN) to modify ZnO NWs. We systematically studied the photocatalytic performance of ZnO NWs modified with different ratios of TAP-CN. The results showed that 9 wt% TAP-CN-30/ZnO NWs had the best degradation effect on Rhodamine B dye. The degradation rate was 99.36% in 80 min. The excellent degradation performance was attributed to the TAP-CN conjugated system promoting photo-generated charge transfer. This work provided guidance for designing efficient composite catalysts for application in other renewable energy fields.

Environmental pollution, especially water pollution, is becoming increasingly serious. Organic dyes are one type of the harmful pollutants that pollute groundwater and destroy ecosystems. In this work, a series of graphitic carbon nitride (g-C3N4)/ZnO photocatalysts were facilely synthesized through a grinding method using ZnO nanoparticles and g-C3N4 as the starting materials. According to the results, the photocatalytic performance of 10 wt.% CN-200/Z-500 (CN-200, which g-C3N4 was 200 kGy, referred to the irradiation metering. Z-500, which ZnO was 500 °C, referred to the calcination temperature) with the CN-200 exposed to electron beam radiation was better than those of either Z-500 or CN-200 alone. This material displayed a 98.9% degradation rate of MB (20 mg/L) in 120 min. The improvement of the photocatalytic performance of the 10 wt.% CN-200/Z-500 composite material was caused by the improvement of the separation efficiency of photoinduced electron–hole pairs, which was, in turn, due to the formation of heterojunctions between CN-200 and Z-500 interfaces. Thus, this study proposes the application of electron-beam irradiation technology for the modification of photocatalytic materials and the improvement of photocatalytic performance.

Objective To isolate and culture neural crest cells (NCCs) from lung tissue of mice and to identify the characteristics of the cells in order to provide a new cell model for studying lung injury and injure repair. Methods The mT/mG dual-fluorescence reporter mice and Wnt1-Cre transgenic mice were hybridized, and mT/mG; Wnt1-Cre transgenic mice were screened to obtain enhanced green fluorescent protein (EGFP) permanently labeled NCCs. Cell suspension of mouse lung tissue was prepared by enzymolysis. EGFP+ cells (namely NCCs) were harvested by flow cytometry. Primary culture was performed with DMEM/F12 culture medium optimized in the laboratory, NCCs was characterized by immunofluorescence microscopy. Then NCCs differentiation was directed by mouse bone marrow mesenchymal stem cells osteogenic induction. Results The mT/mG of EGFP permanently labeled NCCs was successfully obtained by hybridization and high-purity NCCs were isolated from Wnt1-Cre transgenic mice lung tissue. They can be cultured in vitro and with spindle morphology which was,similar to fibroblast adherent proliferation. NCCs expressed the neural crest stem cell marker Sox10 and induced to differentiate into osteoblasts. Conclusions NCCs isolated and cultured from lung tissue of mT/mG;Wnt1-Cre transgenic mice show stable proliferation and have the characteristics of neural crest stem cells, which may function as a potential cell model for research on lung tissue injury and the mechanism of repair.