以[Cu(tu)]Cl·1/2H2O纳米线作为自牺牲模板在室温下成功制备出形貌良好、纯度高的多孔硫化铜纳米管(PCSNTs)(硫脲=Tu)。利用X射线衍射仪(XRD)、X射线光电子能谱仪(XPS)、扫描电子显微镜(SEM)、透射电子显微镜(TEM)、X射线能谱仪(E...以[Cu(tu)]Cl·1/2H2O纳米线作为自牺牲模板在室温下成功制备出形貌良好、纯度高的多孔硫化铜纳米管(PCSNTs)(硫脲=Tu)。利用X射线衍射仪(XRD)、X射线光电子能谱仪(XPS)、扫描电子显微镜(SEM)、透射电子显微镜(TEM)、X射线能谱仪(EDS)和矢量网络分析仪(VNA)对样品的晶体成分和晶相结构、化学元素价态、微观形貌、元素种类和电磁参数进行分析测定。根据传输线理论,计算样品的反射损耗RL;同时,对PCSNTs/石蜡复合物的微波吸收机理和PCSNTs的形成原理进行分析讨论。结果表明,PCSNTs/石蜡复合物在厚度为2.2 mm时,表现出极强的微波吸收能力(在15.67 GHz时,RL=-45.02 d B),有效吸收(RL﹤-10 d B)频宽为4.75 GHz(13.25 GHz^18.00 GHz)。本制备方法简便快捷,产品纯度高、形貌均一,可用于工业化生产。自牺牲模板法是一种制备中空纳米结构的策略。展开更多
Through employing zeolitic imidazolate framework-67(ZIF-67)templates,the straightforward hydrother-mal and electrodeposition methods were applied to synthesize FeOOH@CoMoO_(4)heterostructure attached to the sur-face o...Through employing zeolitic imidazolate framework-67(ZIF-67)templates,the straightforward hydrother-mal and electrodeposition methods were applied to synthesize FeOOH@CoMoO_(4)heterostructure attached to the sur-face of nickel foam(NF).The specific structure of the as-prepared FeOOH@CoMoO_(4)/NF-400s provided pronounced porosity and extensive surface area,enhancing rapid electron transport and exposing abundant active sites to improve catalytic reactions.Furthermore,the introduction of FeOOH,which induces electron transfer from FeOOH to CoMoO_(4),confirms their strong electronic interaction,thereby leading to an accelerated surface catalytic reaction.Consequently,the constructed FeOOH@CoMoO_(4)/NF-400s heterostructure demonstrated exceptional oxygen evolu-tion reaction(OER)activity,requiring an overpotential of 199 mV to deliver the current density of 10 mA·cm^(-2),cou-pled with the superior Tafel slope value of 49.56 mV·dec^(-1)and outstanding stability over 20 h under the current densities of both 10 and 100 mA·cm^(-2).展开更多
文摘以[Cu(tu)]Cl·1/2H2O纳米线作为自牺牲模板在室温下成功制备出形貌良好、纯度高的多孔硫化铜纳米管(PCSNTs)(硫脲=Tu)。利用X射线衍射仪(XRD)、X射线光电子能谱仪(XPS)、扫描电子显微镜(SEM)、透射电子显微镜(TEM)、X射线能谱仪(EDS)和矢量网络分析仪(VNA)对样品的晶体成分和晶相结构、化学元素价态、微观形貌、元素种类和电磁参数进行分析测定。根据传输线理论,计算样品的反射损耗RL;同时,对PCSNTs/石蜡复合物的微波吸收机理和PCSNTs的形成原理进行分析讨论。结果表明,PCSNTs/石蜡复合物在厚度为2.2 mm时,表现出极强的微波吸收能力(在15.67 GHz时,RL=-45.02 d B),有效吸收(RL﹤-10 d B)频宽为4.75 GHz(13.25 GHz^18.00 GHz)。本制备方法简便快捷,产品纯度高、形貌均一,可用于工业化生产。自牺牲模板法是一种制备中空纳米结构的策略。
文摘Through employing zeolitic imidazolate framework-67(ZIF-67)templates,the straightforward hydrother-mal and electrodeposition methods were applied to synthesize FeOOH@CoMoO_(4)heterostructure attached to the sur-face of nickel foam(NF).The specific structure of the as-prepared FeOOH@CoMoO_(4)/NF-400s provided pronounced porosity and extensive surface area,enhancing rapid electron transport and exposing abundant active sites to improve catalytic reactions.Furthermore,the introduction of FeOOH,which induces electron transfer from FeOOH to CoMoO_(4),confirms their strong electronic interaction,thereby leading to an accelerated surface catalytic reaction.Consequently,the constructed FeOOH@CoMoO_(4)/NF-400s heterostructure demonstrated exceptional oxygen evolu-tion reaction(OER)activity,requiring an overpotential of 199 mV to deliver the current density of 10 mA·cm^(-2),cou-pled with the superior Tafel slope value of 49.56 mV·dec^(-1)and outstanding stability over 20 h under the current densities of both 10 and 100 mA·cm^(-2).
