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IR-doped titania electrode material with heterogeneous photoelectrocatalytic performance

A technology of photoelectric catalysis and electrode materials, applied in the directions of oxide conductors, physical/chemical process catalysts, piezoelectric/electrostrictive/magnetostrictive devices, etc. Effects of photocatalytic activity, improved utilization, and increased photoresponse range

Active Publication Date: 2020-04-10
FUZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Of course, the amount of precious metal Ir is higher than 0.6mg / cm 2 The photocatalytic effect is better, but the manufacturing price is significantly higher, which is not conducive to application development

Method used

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  • IR-doped titania electrode material with heterogeneous photoelectrocatalytic performance
  • IR-doped titania electrode material with heterogeneous photoelectrocatalytic performance
  • IR-doped titania electrode material with heterogeneous photoelectrocatalytic performance

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Embodiment 1

[0024] A method for preparing an Ir-doped titanium dioxide electrode material with heterogeneous photoelectrocatalytic performance, comprising the following steps:

[0025] 1) After degreasing, sandblasting, and etching with 20wt% boiling sulfuric acid solution for 40 min, the 1 mm thick industrial TA1 titanium plate was washed with water and set aside;

[0026] 2) Dissolve chloroiridic acid and titanium trichloride solution in absolute ethanol at a metal ion molar ratio of 1:15, and ultrasonically oscillate to dissolve it evenly. After standing for 24 hours, apply the mixed solution evenly on the pretreated titanium On the surface of the plate substrate, the loading of metal Ir on the titanium is controlled to be 0.2mg / cm 2 After each coating, it was dried under infrared light, placed in a box-type resistance furnace at 500°C for 15 minutes, and cooled after taking out the furnace; the process of coating-curing-thermal oxidation-cooling was repeated 4 times, and after the las...

Embodiment 2

[0028] A method for preparing an Ir-doped titanium dioxide electrode material with heterogeneous photoelectrocatalytic performance, comprising the following steps:

[0029] 1) After degreasing, sandblasting, and etching with 20wt% boiling sulfuric acid solution for 40 min, the 1 mm thick industrial TA1 titanium plate was washed with water and set aside;

[0030] 2) Dissolve chloroiridic acid and titanium trichloride solution in anhydrous ethanol according to the metal ion molar ratio of 1:7, and ultrasonically oscillate to dissolve it evenly. After standing for 24 hours, apply the mixed solution evenly on the pretreated titanium On the surface of the plate substrate, the loading of metal Ir on the titanium is controlled to be 0.2mg / cm 2 After each coating, it was dried under infrared light, placed in a box-type resistance furnace at 500°C for 15 minutes, and cooled after taking out the furnace; the process of coating-curing-thermal oxidation-cooling was repeated 3 times, and a...

Embodiment 3

[0032] A method for preparing an Ir-doped titanium dioxide electrode material with heterogeneous photoelectrocatalytic performance, comprising the following steps:

[0033] 1) After degreasing, sandblasting, and etching with 20wt% boiling sulfuric acid solution for 40 minutes, the industrial TA1 titanium plate was washed with water and set aside;

[0034] 2) Dissolve chloroiridic acid and titanium trichloride solution in absolute ethanol according to the metal ion molar ratio of 3:13, and ultrasonically oscillate to dissolve it evenly. After standing for 24 hours, apply the mixed solution evenly on the pretreated titanium On the surface of the plate substrate, the loading of the metal Ir on the titanium is controlled to be 0.4mg / cm 2 After each coating, it was dried under infrared light, placed in a box-type resistance furnace at 500°C for 15 minutes, and cooled after taking out the furnace; the process of coating-curing-thermal oxidation-cooling was repeated 5 times, and afte...

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Abstract

The invention belongs to the field of electrode material preparation, and specifically relates to an Ir-doped titanium dioxide electrode material with heterogeneous photoelectrocatalytic performance. The electrode material is Ti / Ir x Ti 1‑x O 2 ,0.0625≤x≤0.1875. After pre-treating the titanium plate, the mixed solution of chloroiridic acid and titanium trichloride is applied to the pre-treated titanium plate, followed by infrared illumination curing, thermal oxidation and annealing to obtain heterogeneous photoelectrocatalytic activity. Ti / TiO modified with noble metal active Ir component 2 electrode. By controlling the appropriate Ir doping amount, not only the conductivity of the electrode can be effectively improved, but its photocatalytic activity can also be effectively improved.

Description

technical field [0001] The invention belongs to the field of electrode material preparation, and in particular relates to an Ir-doped titanium dioxide electrode material with heterogeneous photoelectric catalytic performance. Background technique [0002] Semiconductor TiO 2 Because of its low utilization rate of sunlight, its application in sewage treatment is limited. By nano-TiO 2 The modification of TiO, such as metal and non-metal doping, can effectively broaden its spectral response range and improve the TiO 2 photocatalytic efficiency. Currently, for TiO 2 There are many reports on modification research, and the main modification methods include: metal / nonmetal doping, semiconductor recombination, surface dye sensitization, noble metal deposition, co-doping modification, ion implantation, strong acid surface modification, etc. Metal ion doping can effectively control the defects of crystals, thereby improving the mobility of photogenerated carriers inside the crys...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L41/047C02F1/30C02F1/461B01J23/46H01B1/08H10N30/87
CPCH01B1/08C02F1/30C02F1/46114B01J23/468C02F2001/46142C02F2001/46133C02F2305/10B01J35/39
Inventor 邵艳群黄善锋王艳鸿何建张帅
Owner FUZHOU UNIV