6 results about "Visible light radiation" patented technology

The invention relates of UV-Vis radiation curable coating compositions comprising magnetic or magnetizable pigment particles and methods for producing optical effect layers (OELs) comprising magnetically oriented magnetic or magnetizable pigment particles and the use of said OELs as anti-counterfeit means on security documents or security articles as well as decorative purposes. The UV-Vis radiation curable coating compositions comprises one or more (meth)acrylate monomers, one or more cyclic ether compounds, one or more vinyl ether compounds, one or more photoinitiators, one or more thermoplastic polymers and non-spherical magnetic or magnetisable pigment particles.

The current invention describes the synthesis of heterogeneous composite comprising laponite and heptamolybdate by wetness impregnation method. Different experimental settings were used to carry out the synthesis, including the heptamolybdate ammonium dose (1.5, 1 or 0.5 g), ion exchanger dose tetrabutyl ammonium bromide (0.5, 0.25 or 0.125g), reaction duration (12 or 24h) and calcination temperature (200, 300 and 400 °C) for 2 hours. The optimal synthesis composition of the laponite / molybdate (Lap-Mo) is as follows: 5 g of Lap + 0.5 g of TBA + 1.5 g of heptamolybdate ammonium with reaction duration of 24 h and a calcination temperature of 300 °C for 2 hours under air. The laponite / molybdate composite have been used in an AOP to degrade MB dye in presence of H2O2 as an oxidant under visible light radiation. The AOP experiment have been optimized using RSM based on BBD. Under the optimum conditions: contact time=72 min, [H2O2 / Lap-Mo] wt% ratio= 1.24, dye concentration= 20.95 mg.L-1 pH= 8.3 reaching a 99% of degradation rate. The Lap-Mo catalyst degradation efficiency was also tested for other dyes such as safranin T (ST) and rhodamine B (RhB) as cationic dyes and methyl orange (MO) as anionic dye. Indeed, they exhibits a highly degradation rate equal to 96, 90 and 89% for ST, RhB and MO, respectively. Advantageously, the invention intends to promote, profitably, and efficiently dye degradation using the laponite / molybdate composite. Furthermore, the potential of the invention falls within the framework of improving wastewater treatment and paves the way to more areas of application in multiple industries.

This invention relates to the field of solar cells, and discloses an organic compound and its applications, a composition for encapsulating adhesives, and a method for preparing encapsulating adhesives. The organic compound has the structure shown in formula (I). The organic compound provided by this invention has strong absorption of ultraviolet light, which is then converted into visible light and radiated. Furthermore, the ultraviolet light conversion encapsulating film containing the organic compound of this invention has high transmittance, which can increase the transmittance of visible light and thus improve the photoelectric conversion efficiency of photovoltaic modules.

The application relates to the field of solar cells, and discloses an organic compound containing a benzotriazole structure, application of the organic compound, a composition for encapsulation glue, and a method for preparing encapsulation glue. The compound provided by the application has a structure shown in formula (I), H on an ortho-methyl group forms a weak interaction with a nitrogen atom, a whole chelate ring is formed, absorption of ultraviolet light is increased, after the ultraviolet light is absorbed, energy is transferred to a light-emitting unit through intramolecular charge transfer, and then the energy is converted into visible light radiation, absorption of visible light by the solar cell is promoted, and photoelectric conversion efficiency is improved.

An engineering prediction method for visible light radiation characteristics is proposed. First, for a hypersonic vehicle, a typical state is selected, and thermochemical nonequilibrium flow field calculations are performed. The flow field is sufficiently large to cover all high-temperature flow fields within the observation direction. Then, based on the flow field calculation results, information such as the observation direction, observation field angle, and observation band is set, and the light radiation intensity is calculated using the radiation characteristic engineering prediction method. This invention addresses the problems of low accuracy and difficulty in engineering application of high-temperature gas radiation characteristic prediction in the thermochemical nonequilibrium region by establishing an engineering prediction method for high-temperature gas radiation characteristics applicable to the visible light band based on thermochemical nonequilibrium flow fields.

A controllable flower-like BSO photocatalyst with nanosheet stacking and its preparation method are disclosed. The method involves improving and controlling the growth of bismuth silicate by introducing CTAB and CTAC to construct a heterogeneous photocatalyst with controllable band gap and morphology. The addition of CTAC reduces the particle size of the sheet-like powder and decreases its packing density, while the addition of CTAB promotes the formation of a flower-like structure. Combined with the synergistic effect of the two dispersants, BSO is modified to control the formation of the heterogeneous structure, resulting in a controllable flower-like structure with thin sheet stacking. This effectively increases the surface area and significantly improves the absorption rate of visible light radiation. The method is simple to operate, and the prepared powder has a uniform particle size distribution and good dispersibility. The resulting composite material not only incorporates the effects of the new heterostructure, but the smaller and thinner sheet-like structure also provides more active sites, exhibiting higher photocatalytic performance. This photocatalyst also has broad applicability to antibiotics and is recyclable.