The oxygen quenching effect in a Linear Alkl Benzene （LAB） based liquid scintillator （LAB as the solvent, 3 g/L 2, 5 diphe-nyloxazole （PPO） as the fluor and 15 mg/L p-bis-（o-methylstyryl）-benzene （bis-MSB） as...The oxygen quenching effect in a Linear Alkl Benzene （LAB） based liquid scintillator （LAB as the solvent, 3 g/L 2, 5 diphe-nyloxazole （PPO） as the fluor and 15 mg/L p-bis-（o-methylstyryl）-benzene （bis-MSB） as the h-shifter） is studied by measuring the light yield as a function of the nitrogen bubbling time. It is shown that the light yield of the fully purged liquid scintillator is increased by 11% at room temperature and the room atmospheric pressure. A simple nitrogen bubbling model is proposed to describe the relationship between the relative light yield （oxygen quenching factor） and the bubbling time.展开更多
This paper is a report on the development of a convenient approach to fabricating a very efficient hybrid photoelectrocatalyst for water splitting.This photoelectrocatalyst consists of nickel-cobalt layered double hyd...This paper is a report on the development of a convenient approach to fabricating a very efficient hybrid photoelectrocatalyst for water splitting.This photoelectrocatalyst consists of nickel-cobalt layered double hydroxide as the core,cadmium sulfide as the shell,and nitrogen,hence NiCo-LDH@CdS-N.For the electrocatalytic activity to be improved,the H_(2) and O_(2) binding energy needs to be weakened.The interstitial nitrogen doping on NiCo-LDH@CdS can increase electrocatalytic activity to a great extent.NiCoLDH@CdS nanoparticles are obtained by subjecting to nitriding the NiCo-LDH@CdS electrode coated with polyvinylpyrrolidone nanosheets.This electrode has a large specific surface area,allows fast transfer of electrons,and exhibits long-term stability.The experimental results presented in this paper reveal that interstitial nitrogen doping largely reduces H_(2) and O_(2) binding energy and lowers the activation barrier for the formation and splitting of water.展开更多
基金Supported by Nation Natural Science Foundation of China (211202037)
文摘The oxygen quenching effect in a Linear Alkl Benzene （LAB） based liquid scintillator （LAB as the solvent, 3 g/L 2, 5 diphe-nyloxazole （PPO） as the fluor and 15 mg/L p-bis-（o-methylstyryl）-benzene （bis-MSB） as the h-shifter） is studied by measuring the light yield as a function of the nitrogen bubbling time. It is shown that the light yield of the fully purged liquid scintillator is increased by 11% at room temperature and the room atmospheric pressure. A simple nitrogen bubbling model is proposed to describe the relationship between the relative light yield （oxygen quenching factor） and the bubbling time.
文摘This paper is a report on the development of a convenient approach to fabricating a very efficient hybrid photoelectrocatalyst for water splitting.This photoelectrocatalyst consists of nickel-cobalt layered double hydroxide as the core,cadmium sulfide as the shell,and nitrogen,hence NiCo-LDH@CdS-N.For the electrocatalytic activity to be improved,the H_(2) and O_(2) binding energy needs to be weakened.The interstitial nitrogen doping on NiCo-LDH@CdS can increase electrocatalytic activity to a great extent.NiCoLDH@CdS nanoparticles are obtained by subjecting to nitriding the NiCo-LDH@CdS electrode coated with polyvinylpyrrolidone nanosheets.This electrode has a large specific surface area,allows fast transfer of electrons,and exhibits long-term stability.The experimental results presented in this paper reveal that interstitial nitrogen doping largely reduces H_(2) and O_(2) binding energy and lowers the activation barrier for the formation and splitting of water.
