The reaction between 7,7,8,8-tetracyanoquinodimethane(TCNQ)and water in organic solvents was studied.TCNQ and water complex has strong molar absorptivity at 744nm and 840nm.The linear range is 0～7.0%(V/V)or 0～8.0%(V...The reaction between 7,7,8,8-tetracyanoquinodimethane(TCNQ)and water in organic solvents was studied.TCNQ and water complex has strong molar absorptivity at 744nm and 840nm.The linear range is 0～7.0%(V/V)or 0～8.0%(V/V)for the determination of water in methanol,ethanol,n-propyl alcohol,2-propanol.The results for ethanol were in agreement with standard results. The recoveries of water in n-propyl alcohol and 2-propanol were 96.6%～101% and 98%～102%,respectively.This is a simple,sensitive and reproducible method for determining water in organic solvents.展开更多
Design and development of high-efficiency and durable oxygen evolution reaction(OER)electrocatalysts is crucial for hydrogen production from seawater splitting.Herein,we report the in situ electrochemical conversion o...Design and development of high-efficiency and durable oxygen evolution reaction(OER)electrocatalysts is crucial for hydrogen production from seawater splitting.Herein,we report the in situ electrochemical conversion of a nanoarray of Ni(TCNQ)2(TCNQ=tetracyanoquinodimethane)on graphite paper into Ni(OH)_(2) nanoparticles confined in a conductive TCNQ nanoarray(Ni(OH)_(2)-TCNQ/GP)by anode oxidation.The Ni(OH)_(2)-TCNQ/GP exhibits high OER performance and demands overpotentials of 340 and 382 mV to deliver 100 mA·cm^(−2) in alkaline freshwater and alkaline seawater,respectively.Meanwhile,the Ni(OH)_(2)-TCNQ/GP also demonstrates steady long-term electrochemical durability for at least 80 h under alkaline seawater.展开更多
文摘The reaction between 7,7,8,8-tetracyanoquinodimethane(TCNQ)and water in organic solvents was studied.TCNQ and water complex has strong molar absorptivity at 744nm and 840nm.The linear range is 0～7.0%(V/V)or 0～8.0%(V/V)for the determination of water in methanol,ethanol,n-propyl alcohol,2-propanol.The results for ethanol were in agreement with standard results. The recoveries of water in n-propyl alcohol and 2-propanol were 96.6%～101% and 98%～102%,respectively.This is a simple,sensitive and reproducible method for determining water in organic solvents.
基金supported by the National Natural Science Foundation of China(No.22072015)the Opening Fund of Key Laboratory of Chemical Biology and Traditional Chinese Medicine Research(Hunan Normal University)Ministry of Education(2020-02).
文摘Design and development of high-efficiency and durable oxygen evolution reaction(OER)electrocatalysts is crucial for hydrogen production from seawater splitting.Herein,we report the in situ electrochemical conversion of a nanoarray of Ni(TCNQ)2(TCNQ=tetracyanoquinodimethane)on graphite paper into Ni(OH)_(2) nanoparticles confined in a conductive TCNQ nanoarray(Ni(OH)_(2)-TCNQ/GP)by anode oxidation.The Ni(OH)_(2)-TCNQ/GP exhibits high OER performance and demands overpotentials of 340 and 382 mV to deliver 100 mA·cm^(−2) in alkaline freshwater and alkaline seawater,respectively.Meanwhile,the Ni(OH)_(2)-TCNQ/GP also demonstrates steady long-term electrochemical durability for at least 80 h under alkaline seawater.
