公开(公告)号：US20230372918A1

公开(公告)日：2023-11-23

申请号：US18028243

申请日：2021-08-24

申请人： NANJING UNIVERSITY ,  NANHUAN YANCHENG ENVIRONMENTAL PROTECTION TECHNOLOGY CO., LTD. ,  NANJING UNIVERSITY & YANCHENG ACADEMY OF ENVIRONMENTAL PROTECTION TECHNOLOGY AND ENGINEERING

发明人： Jinnan WANG ,  Zhiang HOU ,  Weilin BIAN ,  Yi WANG ,  Jiangfeng CHU ,  Cong LIU

IPC分类号： B01J35/00 ,  B01J23/50 ,  B01J37/10 ,  C02F1/30

CPC分类号： B01J35/004 ,  B01J23/50 ,  B01J37/10 ,  C02F1/30 ,  C02F2101/163

摘要： A photocatalytic material for efficient photocatalytic removal of a high-concentration nitrate, and a preparation method and use thereof are disclosed. The preparation method includes the following steps: step 1: preparation of a citrate-stabilized silver nanoparticle; step 2: synthesis and functionalization modification of SiO2 step 3: preparation of Ag/SiO2; and step 4: preparation of an Ag/SiO2@cTiO2 core-shell structure. The photocatalytic material prepared by the present disclosure has high reduction catalytic activity and can quickly remove a high-concentration nitrate and achieve high nitrogen selectivity. In addition, due to protection of a titanium dioxide shell, the photocatalytic material has excellent stability and can remove a high-concentration nitrate in water when the nitrate coexists with a high-concentration chloride ion.

公开(公告)号：US20210023545A1

公开(公告)日：2021-01-28

申请号：US16629316

申请日：2018-12-13

申请人： NANJING UNIVERSITY ,  NANJING UNIVERSITY&YANCHENG ACADEMY OF ENVIRONMENTAL PROTECTION TECHNOLOGY AND ENGINEERING

发明人： Jinnan WANG ,  Suqian XU ,  Zhibin WEN ,  Lifang CHEN ,  Weilin BIAN

IPC分类号： B01J37/08 ,  B01J27/24 ,  B01J35/08 ,  B01J35/10 ,  B01J37/10 ,  C02F1/72

摘要： A method for preparing a Fenton-like catalytic material with dual reaction centers includes the following steps: (1) placing a nitrogen-containing compound in a muffle furnace for calcination, then dissolving the product in deionized water to form a suspension solution; (2) dissolving aluminum nitrate nonahydrate, copper nitrate trihydrate and glucose in deionized water to form a solution; (3) adding the suspension solution in a dropwise manner to the solution, then performing a closed hydrothermal reaction, washing with water, centrifuging and drying to obtain a solid; and (4) placing the prepared solid in a muffle furnace for calcination to obtain the Fenton-like catalytic material. The catalytic material presents a complete ball-flower shaped mesoporous structure, has a large specific surface area, and can expose more catalytic active sites, so that H2O2 is reduced at the electron-rich center as much as possible to generate hydroxyl radicals during the reaction.