PIC catalysis based on polyoxometalates promoting 5-HMF oxidation in H_(2)O/MIBK biphase

Novel polyoxometalate(POM)Pickering interfacial catalyst(PIC)was fabricated through loading(NH_(4))_(5)H_(6)PMo_(4)V_(8)O_(40)(PMo_(4)V_(8))on both alkyl and alkyl-amino groups functionalized silica nanoparticles.PMo_(4)V_(8)/SiO_(2)(C_(8)/C_(8)NH_(2)with molar ratio as 1:1)PIC system provided a new catalytic model for aerobic conversion of 5-hydroxymethylfurfural(5-HMF),as well as its recovery and product separation in H_(2)O/methyl isobutyl ketone(MIBK)biphase reaction.Balancing the ratio of PMo_(4)V_(8),C_(8)and C_(8)NH_(2)gave rise to variety in hydrophilicity and hydrophobicity for PMo_(4)V_(8)/SiO_(2)(C_(8)/C_(8)NH_(2)),which enhanced the transformation of 5-HMF to 2,5-diformylfuran(DFF)in H_(2)O/MIBK with 73.7%yield at 81.8%conversion than in H_(2)O or MIBK single phase.

突发公共卫生事件中公众参与志愿服务的动机研究

志愿服务作为社会公众参与应对突发事件的有效组织形式,在突发公共卫生事件应急管理中发挥显著作用。《中国志愿服务发展报告(2021-2022)》中指出,要充分发挥志愿服务在疫情防控、抢险救灾等领域的重要作用[1]。志愿服务是指自愿贡献个人的时间和精力,在不为物质报酬的前提下,为推动人类发展、社会进步和社会福利事业而提供的服务[2],是社会治理的重要组成力量,更是社会文明进步的重要标志。是加强精神文明建设、培育和践行社会主义核心价值观的重要内容[3]。为更好地提高公众参与志愿服务意愿,本研究从公众参与志愿服务的各类影响因素入手,对突发公共卫生事件下公众参与志愿服务的动机进行深度解剖,探索志愿服务动机与志愿服务行为之间的关系,为引导和鼓励公众积极参与志愿服务提供借鉴与参考。