US 12,623,916 B2Granted

β-type zinc sulfide and preparation method therefor

AssigneeGuangdong Xinda Advanced Materials Technology Co., Ltd

InventorsLin Ze-Peng, Lin Hua-Xiong, Lin Jun

Life of this patent

Estimating the term…

Abstract

Disclosed are β-type zinc sulfide and a preparation method therefor. The method includes: adding an oil phase containing styrene monomers into a water phase containing a pore-forming agent, a surfactant, a Zn salt, a complexing agent, a sulfur source and a water-soluble initiator, conducting mixing and emulsification, introducing metal elements, dissolving polystyrene of microspheres prepared through reaction in tetrahydrofuran, and then conducting calcination, pickling and activation to obtain the β-type zinc sulfide. The zinc sulfide microspheres prepared by the present invention are β-type, and have excellent photoelectric properties and broad application prospects.

Claims8

Dependent claims

A preparation method for β-type zinc sulfide, comprising the following steps:

S1, dissolving styrene monomers in an organic solvent, so as to obtain an oil phase;
S2, dissolving a pore-forming agent, a surfactant, a Zn salt, a complexing agent, a sulfur source and a water-soluble initiator in water, so as to obtain a water phase, wherein the pore-forming agent is a composite pore-forming agent, the composite pore-forming agent comprises a macropore-forming agent and a mesopore-forming agent, the macropore-forming agent is selected from at least one of polyoxyethylene sorbitan fatty acid ester, polyethylene glycol octyl phenyl ether, and polyoxyethylene sorbitan fatty acid ester, and the mesopore-forming agent is cetyltrimethyl ammonium bromide (CTAB);
S3, adding the oil phase into the water phase, conducting mixing and emulsification, adjusting a pH value to 8-9, introducing metal elements, heating to 50° C.-70° C., stirring and conducting reaction for 2 h-5 h, and conducting centrifugation and washing, so as to obtain porous ZnS/PS nanospheres, wherein the metal elements are selected from at least one of nickel, lanthanum, cerium, cobalt, titanium, palladium, iridium, platinum, molybdenum, and strontium, and wherein the total amount of the metal elements added is 0.01 wt % to 0.1 wt % based on a total mass of a system;
S4, adding the porous ZnS/PS nanospheres prepared in S3 into a tetrahydrofuran solvent for reaction, and conducting centrifugation, washing and calcination, so as to obtain porous β-type ZnS nanospheres;
and
S5, washing the porous β-type ZnS nanospheres by using an acid pickling agent, rinsing the nanospheres by using water to become neutral after washing, and conducting activation and modification by using an activating agent, so as to obtain the β-type zinc sulfide that has been activated and modified with the activating agent, wherein the acid pickling agent is selected from at least one of sulfuric acid, nitric acid, phosphoric acid, and acetic acid, and the activating agent is selected from at least one of sodium dodecyl benzene sulfonate, sodium dodecyl sulfate, sodium dodecyl sulfonate, a silane coupling agent, a titanate coupling agent, triethanolamine, epoxidized soybean oil, isooctanol, isooctanoic acid, castor oil, glyceryl monostearate, and a sorbitan fatty acid ester nonionic surfactant and a polyoxyethylene sorbitan fatty acid ester nonionic surfactant.

3 more elements

Dependencies are inferred from the claim text.

patentgrep

Loading patent…

Abstract

A preparation method for β-type zinc sulfide, comprising the following steps:

S1, dissolving styrene monomers in an organic solvent, so as to obtain an oil phase;
S2, dissolving a pore-forming agent, a surfactant, a Zn salt, a complexing agent, a sulfur source and a water-soluble initiator in water, so as to obtain a water phase, wherein the pore-forming agent is a composite pore-forming agent, the composite pore-forming agent comprises a macropore-forming agent and a mesopore-forming agent, the macropore-forming agent is selected from at least one of polyoxyethylene sorbitan fatty acid ester, polyethylene glycol octyl phenyl ether, and polyoxyethylene sorbitan fatty acid ester, and the mesopore-forming agent is cetyltrimethyl ammonium bromide (CTAB);
S3, adding the oil phase into the water phase, conducting mixing and emulsification, adjusting a pH value to 8-9, introducing metal elements, heating to 50° C.-70° C., stirring and conducting reaction for 2 h-5 h, and conducting centrifugation and washing, so as to obtain porous ZnS/PS nanospheres, wherein the metal elements are selected from at least one of nickel, lanthanum, cerium, cobalt, titanium, palladium, iridium, platinum, molybdenum, and strontium, and wherein the total amount of the metal elements added is 0.01 wt % to 0.1 wt % based on a total mass of a system;
S4, adding the porous ZnS/PS nanospheres prepared in S3 into a tetrahydrofuran solvent for reaction, and conducting centrifugation, washing and calcination, so as to obtain porous β-type ZnS nanospheres;
and
S5, washing the porous β-type ZnS nanospheres by using an acid pickling agent, rinsing the nanospheres by using water to become neutral after washing, and conducting activation and modification by using an activating agent, so as to obtain the β-type zinc sulfide that has been activated and modified with the activating agent, wherein the acid pickling agent is selected from at least one of sulfuric acid, nitric acid, phosphoric acid, and acetic acid, and the activating agent is selected from at least one of sodium dodecyl benzene sulfonate, sodium dodecyl sulfate, sodium dodecyl sulfonate, a silane coupling agent, a titanate coupling agent, triethanolamine, epoxidized soybean oil, isooctanol, isooctanoic acid, castor oil, glyceryl monostearate, and a sorbitan fatty acid ester nonionic surfactant and a polyoxyethylene sorbitan fatty acid ester nonionic surfactant.

3 more elements