US 10,889,517 B2
Nanometer photocatalyst-microbe composite multilayer light transmission combination carrier
Juan Chen, Jiangsu (CN); Peifang Wang, Jiangsu (CN); Chao Wang, Jiangsu (CN); Yanhui Ao, Jiangsu (CN); and Han Gao, Jiangsu (CN)
Assigned to HOHAI UNIVERSITY, Jiangsu (CN)
Appl. No. 16/320,036
Filed by HOHAI UNIVERSITY, Jiangsu (CN)
PCT Filed Oct. 17, 2017, PCT No. PCT/CN2017/106494
§ 371(c)(1), (2) Date Jan. 23, 2019,
PCT Pub. No. WO2019/006908, PCT Pub. Date Jan. 10, 2019.
Claims priority of application No. 2017 1 0544697 (CN), filed on Jul. 6, 2017.
Prior Publication US 2020/0115263 A1, Apr. 16, 2020
Int. Cl. C02F 3/10 (2006.01); C02F 3/00 (2006.01); C02F 3/34 (2006.01); C02F 103/00 (2006.01)
CPC C02F 3/34 (2013.01) [C02F 3/101 (2013.01); C02F 3/348 (2013.01); C02F 2003/001 (2013.01); C02F 2103/007 (2013.01); C02F 2203/006 (2013.01); C02F 2305/08 (2013.01); C02F 2305/10 (2013.01)] 5 Claims
OG exemplary drawing
 
1. A method of making a nano-photocatalyst-microorganism composite multilayered light-transmitting combination support, the nano-photocatalyst-microorganism composite multilayered light-transmitting combination support comprising: multiple layers of wave-shaped plexiglass plate square pieces, a tandem rod holder, hollow elastic spacers, and fixing screws; wherein the multiple layers of wave-shaped plexiglass plate square pieces are arranged in parallel and each of the wave-shaped plexiglass plate square pieces is provided with four fixing holes; the tandem rod holder is provided with four tandem rods, and the four tandem rods pass through corresponding fixing holes in each of the wave-shaped plexiglass plate square pieces arranged in parallel, respectively; the tandem rods between two adjacent wave-shaped plexiglass plate square pieces pass through the hollow elastic spacers; each of the tandem rods is provided with a fixing screw at the top end; and each of the wave-shaped plexiglass plate square pieces has different loading layers on the upper and lower surfaces, with a nano-photocatalyst-loading layer on one surface and a degrading bacteria-loading layer on the other surface; and the method comprising:
(1) hot press molding and surface roughening of a raw plexiglass plate, comprising: hot pressing the raw plexiglass plate in a wave-shaped mold into a wave shape; cutting the raw plexiglass plate into wave-shaped plexiglass plate square pieces; roughening by sandblasting the upper and lower surfaces of the wave-shaped plexiglass plate square pieces; and cutting the wave-shaped plexiglass plate square pieces roughened by sandblasting to have circular fixing holes at the four corners;
(2) formation of the nano-photocatalyst-loading layer by loading two layers of films, comprising: ultrasonically cleaning the roughened wave-shaped plexiglass plate square pieces with dilute nitric acid, absolute ethanol and pure water sequentially at an ultrasonic frequency of 40 KHz and at a temperature of 35° C., each for 20 min; air drying the ultrasonically-cleaned wave-shaped plexiglass plate square pieces at room temperature; and then applying a layer of SiO2 on one surface of each wave-shaped plexiglass plate square piece by mechanical painting to increase the adhesion intensity of the nano-photocatalyst followed by applying a nano-photocatalyst on the one surface of each wave-shaped plexiglass plate square piece at normal temperature and pressure by three or more consecutive surface paintings, prior to rinsing with water and air drying at room temperature;
(3) formation of the degrading bacteria-loading layer by loading degrading bacteria;
(4) assembly by stacking the multiple layers of the plexiglass plate square pieces; and
(5) support securement and interlayer spacing adjustment.