37results about How to "Increase light absorption intensity" patented technology

The invention discloses a titanium dioxide / graphene / molecularly imprinted composite material and a preparation method and application thereof. According to the composite material, bisphenol A serves as template molecules, a titanium dioxide / graphene composite material serves as an imprinting carrier, o-phenylenediamine serves as functional monomers, a polymerization reaction is carried out under photo-initiation, a molecularly imprinted polymer is formed, and the titanium dioxide / graphene / molecularly imprinted composite material is prepared after the template molecules in the molecularly imprinted polymer are washed out. The titanium dioxide / graphene / molecularly imprinted composite material has a small energy gap, high visible light region light absorption intensity, higher affinity and recognition capacity and higher catalytic capacity, can be widely used for removing bisphenol A in water, can selectively adsorb and efficiently and catalytically degrade the target pollutant bisphenol A, has the advantages of being easy and convenient to operate, high in treatment efficiency, wide in application range, free of toxic effects on the environment and the like, and has wide application prospects in the field of treatment of environmental pollution.

The invention discloses nanoparticles with an AIAE (aggregation-induced absorption enhancement) phenomenon as well as synthesis and an application of the nanoparticles and relates to nanoparticles. The nanoparticles with the AIAE phenomenon comprise inner cores and outer layers, wherein the inner cores are croconaine analogues, the outer layers are protein particles, the inner cores are loaded ininner cavities of the outer layers, and composite nanostructures with the croconaine analogues as the inner cores and the protein particles as the outer layers are formed. Hepatitis B core protein particles are diluted and added to a depolymerization buffer solution to be stirred; dye is uniformly stirred in DMSO, and croconaine analogue dye is obtained; the croconaine analogue dye is added to anobtained mixture and stirred, and a mixed liquid is obtained; the mixed liquid is added to a dialysis bag, dialysis is performed in an assembling buffer solution 1, and a magnetic stirring reaction isperformed; the mixed liquid is added to the dialysis bag, dialysis is performed in an assembling buffer solution 2, and a magnetic stirring reaction is performed to obtain medicine-carrying protein nanoparticles; the obtained medicine-carrying protein nanoparticles are subjected to <125>I labeling, and the nanoparticles with the AIAE phenomenon are obtained.

The invention relates to a method for coating surface of black phosphor nano particles with mesoporous silica, which belongs to the fields of biomedicine and a nano material. preparing the black phosphor nano particles; placing the prepared black phosphor nano particles in a shaking table, oscillating the shaking table while adding a proper amount of TEOS (ethyl orthosilicate), repeating the above step after half hour; after a reaction is completed, performing centrifugation cleaning, discharging a supernatant, and re-dispersing the black phosphor nano particles coated with silica in ultra pure water, the black phosphor nano particles coated with silica can effectively alleviate the easy agglomeration characteristic of black phosphor, and the silica for coating the black phosphor nano particles is used for acoustic imaging, drug loading, and biological imaging.

The invention discloses a Ti-doped CdIn 2 S 4 The intermediate zone film and its preparation method, the preparation method first cleans the soda lime glass substrate, and then CdIn 2 S 4 Target and TiS 2 The targets are respectively installed on the target positions of the magnetron sputtering apparatus, and then the cleaned soda-lime glass substrate is fixed on the stage, vacuumized, and then CdIn is sputtered alternately in sequence. 2 S 4 and TiS 2 , depositing Ti‑CdIn on soda-lime glass substrate 2 S 4 Obtain a laminated film, and finally put the laminated film into an annealing furnace for annealing, and finally obtain Ti-CdIn 2 S 4 Film in the middle. Ti-doped CdIn of the present invention 2 S 4 The preparation method of the middle zone thin film, the Ti-CdIn of pure spinel structure is prepared by sputtering method 2 S 4 Thin films, doped with Ti elements to form impurity bands, this film can absorb photons in the range of visible light-infrared light sources, increase photogenerated carriers and reduce electron-hole pair recombination, and the light absorption intensity is significantly enhanced, and with the Ti doping amount The increase in absorption strength is also enhanced.

The invention discloses a gallium nitride series CIGS device for artificial photosynthesis and a preparation method thereof. The device includes a TCO layer, a ZnO layer, a CdS layer, a CIGS layer, a Mo layer, an In layer, a GaN layer, an n+-GaN layer, and a sapphire layer sequentially from bottom to top. The preparation steps are as follows: place a GaN film on a clean glass sheet, place In particles evenly on the surface of the GaN film, after placing, place a CIGS solar cell on the surface of the In particles, press it flat, put a clean glass dish on the surface, and put It is put into a vacuum drying oven, evacuated, heated for a period of time, and cooled to room temperature to obtain a gallium nitride series CIGS device. Compared with Si-based GaN devices, the device of the present invention is energy-saving and environment-friendly, and has a simple process. Using the present invention as an anode for photosynthesis has the advantages of high photocurrent density and high cathode potential, and has a strong light absorption coefficient, which is beneficial to solve the development and utilization of new energy and the protection of CO 2 governance of environmental issues.