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The floatable photocatalysts were a new strategy towards real-world applications of photocatalytic degradation, which exhibited high utilization and recovery rate. Expand aple poly ephylene (EPE) was widely known as packaging fill materials, lots of used EPE as rubbish increased environment pollution. As it happens, EPE had the characteristics of light weight, abundant capillaries, which can be used as the carriers to prepare floatable photocatalysts. EPE/SnO2 was prepared through coprecipitation and low-temperature oxidation technique. In addition, the influence of Sn-doping amount, pH value, catalyst loading, the cationic and anionic on the photocatalytic efficiency toward rhodamine B (RhB) was investigated. Almost of the 50 mL RhB (15 mg/L) was decomposed within 50 min under visible-light. Importantly, the removal rate of the floatable photocatalysts EPE/SnO2 was fourteen times higher than pure SnO2 at 50 min. The removal efficiencies of EPE/SnO2 for RhB in tap water, river water and reservoir water were above 98% within 50 min. Moreover, the degradation efficiency of RhB still remained 96.3% after 10 recycling runs. Compared to the catalysts recently reported, the reusability of EPE/SnO2 was the highest. According to the free radical trapping experiment, 1O2, O2• − and h+ were confirmed the main reactive oxygen species participating the photocatalytic degradation over RhB. [ABSTRACT FROM AUTHOR]

CuO/CeO2 microsphere was viewed as an economical and environment-friendly heterogeneous photocatalyst, which was synthesized via a co-precipitation technique. The physicochemical properties of as-prepared samples were characterized by various methods. 20 mg/L of TC-HCl was degraded completely within 20 min at 1 mmol peroxymonosulfate (PMS) under UV-visible light. The scavenging experiments and electron paramagnetic resonance (EPR) technologies revealed that SO4· −, O2· − and ·OH were involved as active species in the CuO/CeO2/PMS system, which were responsible for efficient decomposition of TC-HCl. Moreover, it was applied to treat raw water containing TC-HCl, all the removal efficiencies were more than 89% within 22 min. The possible photocatalytic degradation mechanism for the TC-HCl was investigated. CuO/CeO2 exhibited significant light trapping enhancement after Ce introduced, which lead to enhance the photocatalytic performance. Therefore, the CuO/CeO2 can be utilized as an economical photocatalyst to activate PMS and decompose TC-HCl in aqueous solution. [ABSTRACT FROM AUTHOR]

In view of photodegradation of antibiotics based on SnS2, larger specific surface area SnS2 microcubes remain rare. In this paper, shape-controlled SnS2 microcubes with defects were successfully prepared via a simple template-engaged strategy. The obtained microcubes manifested high specific surface area (43.80 m2 g−1). The degradation performance for Rhodamine B (RhB) was investigated in detail, including the effect of parameters, like different photocatalysts, pH, and catalyst dosage. The results indicated that degradation efficiency was 99.90% under visible light within 80 min. Moreover, the degradation efficiency was 79% after the four successive cycles. [ABSTRACT FROM AUTHOR]

We investigated the efficacy and molecular mechanisms of tazarotene gel for healing deep tissue injury (DTI). We used male C57BL/6J mice to establish a DTI model. Animals were divided randomly into control, tazarotene gel and purilon gel groups. We injected 100 ul tazarotene gel, purilon gel or saline every 48 h for 20 days. Hematoxylin and eosin staining was used to observe pathological changes on days 14 and 21. The mRNA and protein expression of VEGF-α, TGF-β1 and HIF-1α were detected by qRT-PCR and western blot, respectively. Wound sites exhibited accelerated healing by 20 days in the tazarotene gel group. Fewer inflammatory cells and more granulation tissue were found in both experimental groups compared to controls. The mRNA and protein expression of VEGF-α and TGF-β1 in the experimental groups were increased compared to the control group by day 14. Expression of HIF-1α in the experimental groups was significantly less than in the controls. Tazarotene gel promoted wound healing independent of the HIF-1α/VEGF signalling pathway during tissue repair of DTI. Tazarotene and purilon gels exhibited similar macroscopic healing of wounds and expression of genes and proteins. [ABSTRACT FROM AUTHOR]

The spin configuration and spontaneous magnetostriction λ111 of TbxDy0.92-xNd0.1(Fe0.8Co0.2)1.93 (0.20⩽x⩽0.60) alloys have been investigated. The easy magnetization direction (EMD) at room temperature was observed towards the (111) axis when 0.40⩽x⩽0.60, accompanied by a rhombohedral distortion with large spontaneous magnetostriction coefficients λ111, which increases from 1640 ppm for x=0.40 to 1900 ppm for x=0.60. The strong (111)-oriented pseudo 1-3 particulate composite was fabricated by embedding and aligning particles in a passive epoxy matrix under an applied magnetic field. An enhanced magnetostrictive effect, the large low-field magnetostriction, λa, as high as 480 ppm at 3 kOe, was obtained for the sample of x=0.40, in an excess of 75% of its polycrystalline alloy although it only contains 27 vol.% alloy particles. This enhanced effect can be attributed to its low magnetic anisotropy, anisotropic magnetostrictive nature (e.g., λ111 ≠λ100, (111)EMD), chain structure, and the (111)-textured orientation. In addition, we give a direct experimental support that the (111)EMD of particle and the strong (111)-textured orientation are the crucial factors to realize the enhanced magnetostrictive effect in 1-3 particulate composites. [ABSTRACT FROM AUTHOR]