The porous g-C_(3)N_(4)(PCN)nanosheets are successfully synthesized and further modified with nano-sized Ag by a simple wet-chemical process.Intere stingly,the Ag-modified porous g-C_(3)N_(4)(Ag-PCN)nanosheets exhibit...The porous g-C_(3)N_(4)(PCN)nanosheets are successfully synthesized and further modified with nano-sized Ag by a simple wet-chemical process.Intere stingly,the Ag-modified porous g-C_(3)N_(4)(Ag-PCN)nanosheets exhibit competitive fluorescence detection performance of chloride ion(Cl)in aqueous solutio n.Under the optimized conditions,the concentration of Cl could be quantitative analyzed with the Ag-PCN in a wide detection range from 0.5 mmol/L to 0.1 mol/L,with a low detection limitation of 0.06 mmol/L.It is confirmed that the fluorescence of PCN could be effectively decayed by the photoinduced charge transfer via the adsorbed Cl for trapping holes,mainly by means of the time-resolved fluorescence and surface photo voltage spectra.The porous structure and modified Ag promote the adsorption of Cl on resulting Ag-PCN,leading to excellent fluorescence detection for Cl.This work provides a feasible route to develop a fluorescence detection of Cl with g-C_(3)N_(4) nanosheets in environment water.展开更多
采用水热法制备了不同Ag修饰量的Ag/MoO_2纳米复合材料,并利用浸渍法将其负载在多孔泡沫镍(Nickel foam,NF)上制备成Ag/MoO_2/NF无粘结剂型直接电极。在该电极中Ag/MoO_2纳米颗粒均匀地负载在泡沫镍上形成了三维网络结构,其中MoO_2纳米...采用水热法制备了不同Ag修饰量的Ag/MoO_2纳米复合材料,并利用浸渍法将其负载在多孔泡沫镍(Nickel foam,NF)上制备成Ag/MoO_2/NF无粘结剂型直接电极。在该电极中Ag/MoO_2纳米颗粒均匀地负载在泡沫镍上形成了三维网络结构,其中MoO_2纳米颗粒是由~10 nm的纳米晶组成。当Ag修饰量为5%时,Ag0.05/MoO_2/NF具有最佳的电化学性能:在0.1 C的电流密度下,首次放电比容量高达1180 m Ah/g,100次循环后仍保持805 m Ah/g;且当电流密度由2 C降低至0.1 C时,比容量由468 m Ah/g升高至820 m Ah/g,表现出优异的储锂性能。展开更多
基金the NSFC project(Nos.U1805255,11704105)Heilongjiang PostdoctoralFund(No.LBH-Z17188)the Fundamental Research Funds of University in Heilongjiang Province(No.2017-KYYWF-0465)。
文摘The porous g-C_(3)N_(4)(PCN)nanosheets are successfully synthesized and further modified with nano-sized Ag by a simple wet-chemical process.Intere stingly,the Ag-modified porous g-C_(3)N_(4)(Ag-PCN)nanosheets exhibit competitive fluorescence detection performance of chloride ion(Cl)in aqueous solutio n.Under the optimized conditions,the concentration of Cl could be quantitative analyzed with the Ag-PCN in a wide detection range from 0.5 mmol/L to 0.1 mol/L,with a low detection limitation of 0.06 mmol/L.It is confirmed that the fluorescence of PCN could be effectively decayed by the photoinduced charge transfer via the adsorbed Cl for trapping holes,mainly by means of the time-resolved fluorescence and surface photo voltage spectra.The porous structure and modified Ag promote the adsorption of Cl on resulting Ag-PCN,leading to excellent fluorescence detection for Cl.This work provides a feasible route to develop a fluorescence detection of Cl with g-C_(3)N_(4) nanosheets in environment water.
文摘采用水热法制备了不同Ag修饰量的Ag/MoO_2纳米复合材料,并利用浸渍法将其负载在多孔泡沫镍(Nickel foam,NF)上制备成Ag/MoO_2/NF无粘结剂型直接电极。在该电极中Ag/MoO_2纳米颗粒均匀地负载在泡沫镍上形成了三维网络结构,其中MoO_2纳米颗粒是由~10 nm的纳米晶组成。当Ag修饰量为5%时,Ag0.05/MoO_2/NF具有最佳的电化学性能:在0.1 C的电流密度下,首次放电比容量高达1180 m Ah/g,100次循环后仍保持805 m Ah/g;且当电流密度由2 C降低至0.1 C时,比容量由468 m Ah/g升高至820 m Ah/g,表现出优异的储锂性能。
