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| 1 | 不同电源激励Ar同轴介质阻挡放电特性对比显示文摘大气压Ar同轴介质阻挡放电(Ar DBD)在能源化工领域有着广泛的应用,为进一步指导实际应用中DBD反应器结构优化和反应性能提升,通过电气特性、发光特性和温度特性等分析手段,系统研究了激励电源类型对ArDBD放电特性的影响,分析和比较了高频交流、微秒脉冲和纳秒脉冲激励ArDBD的放电均匀性、放电过程产生活性粒子的种类和浓度、放电功率和能量利用率以及反应器温度和热损率。研究结果表明,在相同的激励频率下,和高频交流与微秒脉冲电源相比,纳秒脉冲电源激励Ar DBD的放电均匀性最好,放电产生的活性粒子浓度最大,反应器稳定运行时温度最低,能量利用率最高,热损率最低。在3种电源输入电压为12 kV、频率为4 kHz的条件下,纳秒脉冲电源激励的Ar DBD反应器外壁面温度和内电极温度分别为109.9℃和227.9℃,而高频交流电源激励的Ar DBD对应的温度分别为169.0℃和564.4℃,这种高温条件将增加能量损失,降低能量利用率。在相同的激励条件下,纳秒脉冲Ar DBD的能量利用率为61.4%,显著高于微秒脉冲的40.2%和高频交流的24.1%。该研究从能量高效利用的角度为进一步促进Ar DBD在能源化工领域应用提供了有益参考。 | 杨勇 梅丹华 段戈辉 王森 于鹏 方志 | 2020 | 高电压技术2020，46，12： | 10 |
| 2 | Improved photocatalytic activity of TiO_2 produced by an alcohothermal approach through in-situ decomposition of NH_4HCO_3显示文摘High crystallinity of TiO_2 was prepared by a modified alcohothermal method, in which titanium isopropoxide was used as the titania precursor, absolute ethanol as the reaction medium, and NH_4HCO_3 as the raw materials for release of water, ammonia and carbon dioxides via in-situ decomposition. The X-ray powder diffraction(XRD) and transmission electron microscope(TEM) measurements showed that water and ammonia from the in-situ decomposition of NH_4HCO_3 played an important role in conducting the size, shape, crystallinity and microstructure of TiO_2. The photoluminescence spectroscopy and photocurrent measurements indicated that enhanced crystallinity could hinder the recombination and promote the separation of electron-hole pairs in TiO_2, which contribute to the improvement of photocatalytic activity.Methyl orange photodegradation under UV light confirmed that high crystallinity of TiO_2 did present a high photocatalytic activity due to the effective separation of photoinduced charges. | Changyuan Hu Chengjiang Lian Shizheng Zheng Xiaoyu Li Tiewen Lu Quanhong Hu Shuwang Duo Rongbin Zhang Yingying Sun Fei Chen | 2016 | Journal of Energy Chemistry2016，25，3： | 0 |
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