公开(公告)号：US11224866B2

公开(公告)日：2022-01-18

申请号：US16859920

申请日：2020-04-27

Applicant: SOOCHOW UNIVERSITY

Inventor： Jianmei Lu ,  Dongyun Chen

IPC: B01J27/24 ,  B01D53/94 ,  B01J23/75 ,  B01J35/00 ,  B01J37/00 ,  B01J37/04 ,  B01J37/06 ,  B01J37/08 ,  B01J37/34

Abstract: The invention discloses a visible light responsive tricobalt tetraoxide dodecahedron/carbon nitride nanosheet composite and an application thereof in exhaust gas treatment. The preparation method of the composite comprises the following steps: with urea as a precursor, carrying out twice calcination to obtain carbon nitride nanosheet; dispersing the carbon nitride nanosheet into methanol, sequentially adding cobalt nitrate hexahydrate and 2-methylimidazole, and carrying out a reaction to obtain a carbon nitride nanosheet composite; and calcining the carbon nitride nanosheet composite in an air atmosphere at a low temperature to obtain the tricobalt tetraoxide dodecahedron/carbon nitride nanosheet composite. The in-situ growth synthesis method can ensure that the tricobalt tetraoxide obtained by follow-up calcination is uniformly coated on the carbon nitride nanosheet to improve the catalytic performance; the low temperature calcination ensures that the carbon nitride can maintain its wrinkle state and chemical structure during the calcination process.

公开(公告)号：US11174164B2

公开(公告)日：2021-11-16

申请号：US16396611

申请日：2019-04-26

Applicant: SOOCHOW UNIVERSITY

Inventor： Jianmei Lu ,  Dongyun Chen ,  Jun Jiang

IPC: C01B21/06 ,  B01J27/24 ,  B01J35/00 ,  B01J35/04 ,  F01N3/022 ,  F01N3/08 ,  B01D53/86 ,  F01N3/28

Abstract: Disclosed are a honeycomb-like homo-type heterojunction carbon nitride composite material and a preparation method thereof, and an application of the honeycomb-like homo-type heterojunction carbon nitride composite material in catalytic treatment of waste gas. The preparation method includes the following steps: with two different carbon nitride precursors namely urea and thiourea as raw materials, weighing certain amounts of the urea and the thiourea, adding the urea and the thiourea into a crucible, adding a certain amount of ultrapure water, placing the crucible in a muffle furnace, and carrying out calcination molding. The honeycomb-like homo-type heterojunction carbon nitride prepared by the one-step method has good photocatalytic effect to catalytic degradation of NO; meanwhile, the honeycomb-like homo-type heterojunction carbon nitride composite material has the advantages of rich and easily-available production raw materials, good stability, reusability, etc., and has application prospects in the field of treatment of NO in the air.

公开(公告)号：US11167274B2

公开(公告)日：2021-11-09

申请号：US16817547

申请日：2020-03-12

Applicant: SOOCHOW UNIVERSITY

Inventor： Jianmei Lu ,  Qingfeng Xu

IPC: B01J27/24 ,  B01J35/00 ,  B01J35/02 ,  B01J37/08 ,  B01J37/12 ,  C02F1/30 ,  B82Y30/00 ,  B82Y40/00 ,  C02F101/34

Abstract: The present invention provides an In—NH2/g-C3N4 nanocomposites with visible-light photocatalytic activity and application thereof, which can effectively remove organic pollutants (such as tetracycline) in water. First, the graphite phase carbonitride carbon (g-C3N4) was obtained by thermal condensation, and g-C3N4 nanosheet was prepared by thermal oxidative etching. Then, acicular MIL-68(In)—NH2 (In—NH2) was grown in situ on the surface of g-C3N4 nanosheet by solvothermal method. The In—NH2/g-C3N4 nanocomposites with high visible-light photocatalytic activity were obtained. The CNNS firstly was prepared in the present invention, which is beneficial to the needle-like In—NH2 growing on the surface of CNNS and having close interfacial contact with each other, forming a heterojunction, promoting the separation of photogenerated electrons and holes pairs, and enhancing visible-light photocatalytic degradation of organic pollutants. The nanocomposites show high structural stability and reusability, which has great potential in the field of water remediation.

公开(公告)号：US10773247B2

公开(公告)日：2020-09-15

申请号：US16170107

申请日：2018-10-25

Applicant: SOOCHOW UNIVERSITY

Inventor： Jianmei Lu ,  Dongyun Chen ,  Jun Jiang

IPC: B01J27/24 ,  B01J35/00 ,  B01J35/08 ,  B01J37/00 ,  B01J37/08 ,  B01J37/02 ,  B01J37/06 ,  C02F1/32 ,  C02F1/72 ,  B01J27/08 ,  B01J27/13 ,  C01B21/06 ,  C02F101/30 ,  C02F101/34 ,  C02F101/38

Abstract: A hollow porous carbon nitride nanospheres composite loaded with AgBr nanoparticles, preparation method thereof, and its application in dye degradation are disclosed. Using silica nanosphere with core-shell structure as a template and hydrogen cyanamide as precursor, melting to enter the pores of mesoporous silica, after calcination, the silica template is etched with ammonium bifluoride to obtain hollow porous carbon nitride nanospheres; dispersing hollow porous carbon nitride nanospheres in deionized water, adding silver nitrate and sodium bromide in sequence, and obtaining silver bromide nanoparticles by in-situ ion exchange method, stirring, washing and centrifuging to obtain the hollow porous carbon nitride nanospheres composite. The hollow porous carbon nitride prepared by the template method has good photocatalytic effect on dye degradation after composite with silver bromide; and it has the advantages of easy production of raw materials, good stability, reusability, etc. It has application prospects in the treatment of dyes.

公开(公告)号：US10441945B2

公开(公告)日：2019-10-15

申请号：US15382630

申请日：2016-12-17

Applicant: Soochow University

Inventor： Jianmei Lu ,  Dongyun Chen

IPC: B01J21/18 ,  B01J31/06 ,  B01J35/06 ,  B01J37/08 ,  B01D53/86 ,  B01J19/12 ,  C01B21/06 ,  B01J27/24 ,  B01J35/00 ,  B01J35/08 ,  B01J37/00 ,  B01J37/02 ,  B01J37/04

Abstract: The invention discloses a composite material used for catalyzing and degrading nitrogen oxide and its preparation method and application thereof. The invention of the hollow g-C3N4 nanospheres/reduced graphene oxide composite-polymer carbonized nanofiber material is prepared as follow: 1) the preparation of silica nanospheres; 2) the preparation of hollow g-C3N4 nanospheres; 3) the preparation of graphene oxide; 4) the preparation of surface modified hollow g-C3N4 nanoparticles preparation; 5) the preparation of composites; 6) the preparation of composite-polymer carbon nanofiber material. The raw materials used in the process is low cost and easy to get; the operation of the invention is simple and convenient without the use of expensive equipment in the whole process; the composite has high adsorption efficiency of ppb level nitrogen oxide with good repeatability.

公开(公告)号：US11999636B2

公开(公告)日：2024-06-04

申请号：US17555443

申请日：2021-12-18

Applicant: SOOCHOW UNIVERSITY

Inventor： Jianmei Lu ,  Dongyun Chen

IPC: C02F1/44 ,  B01D67/00 ,  B01D69/12 ,  B01D71/02 ,  B01J20/20 ,  B01J20/26 ,  B01J20/28 ,  B01J20/32 ,  C02F101/30

CPC classification number: C02F1/442 ,  B01D67/0083 ,  B01D67/0088 ,  B01D69/12 ,  B01D71/0212 ,  B01D71/022 ,  B01J20/205 ,  B01J20/262 ,  B01J20/28035 ,  B01J20/3204 ,  B01J20/3223 ,  B01J20/3272 ,  B01J20/3297 ,  C02F2101/308

Abstract: A method for purifying dye-containing wastewater based on a porous-polymer-modified metal carbon nanotube membrane includes: (1) preparing the porous-polymer-modified metal carbon nanotube membrane; and (2) passing the dye-containing wastewater through the porous-polymer-modified metal carbon nanotube membrane to remove dyes in the dye-containing wastewater. A device for purifying dye-containing wastewater is also disclosed. The device includes the porous-polymer-based metal carbon nanotube membrane.

公开(公告)号：US11009476B2

公开(公告)日：2021-05-18

申请号：US16264604

申请日：2019-01-31

Applicant: SOOCHOW UNIVERSITY

Inventor： Jianmei Lu ,  Jinghui He

IPC: G01N27/12 ,  C08G73/02

Abstract: The invention discloses a squaraine-polymer-based ammonium/nitrogen monoxide two-component sensor, as well as a preparation method and application thereof. A preparation manner and condition for the sensor are optimized. The squaraine polymer containing azo functional group based ammonium/nitrogen monoxide two-component sensor comprises an interdigital electrode and a coating material with which the interdigital electrode is coated. The coating material is a squaraine polymer containing azo functional group and has high sensing selectivity for ammonium and nitrogen monoxide, the minimum limit of detection thereof is 1 ppb and the response/reversion time is 82s/185s. The sensing performance of the sensor for nitrogen monoxide is also tested, the minimum limit of detection can reach 40 ppb and the response/reversion time is 112s/921s.

公开(公告)号：US10710915B2

公开(公告)日：2020-07-14

申请号：US16427071

申请日：2019-05-30

Applicant: SOOCHOW UNIVERSITY

Inventor： Jianmei Lu ,  Dongyun Chen ,  Jun Jiang

IPC: C02F3/34 ,  C02F1/28 ,  C02F1/20 ,  C12N1/20 ,  C02F101/30 ,  C02F101/38

Abstract: The invention discloses a preparation method of a graphene aerogel metallic organic frame composite material loaded with microorganism as well as preparation method and application thereof in the treatment of azo dye. By using a hydrothermal method, a GA/MIL-100 graphene aerogel metallic organic frame composite material is successfully prepared, and in addition, the composite material disclosed by the invention has good adsorption and degradation effects on an azo dye. In addition, an adsorption method and a biological method are effectively combined, advantages of the two methods are taken into play, and a good application prospect can be achieved.

公开(公告)号：US10518252B1

公开(公告)日：2019-12-31

申请号：US16440163

申请日：2019-06-13

Applicant: SOOCHOW UNIVERSITY

Inventor： Jianmei Lu ,  Dongyun Chen

IPC: B01J27/24 ,  B01J35/00 ,  B01D53/86 ,  B01J31/22 ,  B01J35/06 ,  B01J37/08

Abstract: A carbon nitride membrane composite material modified by black phosphorus/metal organic framework (MOF) and a preparation method and application thereof to waste gas treatment are disclosed. First, taking urea as a raw material to calcine at a high temperature and prepare porous carbon nitride nanosheet; then carrying out surface carboxylation on the porous carbon nitride nanosheet, and modifying metal organic framework (MOF) on the surface of the porous carbon nitride through a layer-by-layer self-assembling method; stripping block black phosphorus materials into a two-dimensional black phosphorus slice by solvent exfoliation method; mixing the MOF-modified porous carbon nitride material with the two-dimensional black phosphorus material, carrying out suction filtration on the mixture under a vacuum pump to obtain the black phosphorus/MOF-modified carbon nitride membrane composite material.

公开(公告)号：US10118151B2

公开(公告)日：2018-11-06

申请号：US15643813

申请日：2017-07-07

Applicant: SOOCHOW UNIVERSITY

Inventor： Jun Jiang ,  Jianmei Lu ,  Najun Li ,  Dongyun Chen

IPC: C01B31/08 ,  B01J20/02 ,  B01J20/26 ,  B01J20/30 ,  B01J35/00 ,  C02F1/28 ,  C02F1/30 ,  C02F1/72 ,  C02F101/30

Abstract: The invention discloses a composite with an adsorption-visible light catalytic degradation synergistic effect and a preparation method and application thereof. The preparation method includes the specific steps that firstly, a bismuth oxyiodide/bismuth oxychloride composite nano-particle loaded activated carbon fiber composite ACF@BiOIxCl1-x is synthesized; then, the fiber surface is grafted with polyethyleneimine, and the end composite PEI-g-ACF@BiOIxCl1-x is obtained. The composite can rapidly adsorb pollutants in water, and meanwhile the pollutants are efficiently degraded with a photocatalyst loaded on the surface of the composite; besides, the purpose of recycling and reusing the photocatalyst is achieved, the comprehensive treatment capability of the composite is improved, the service life of the composite is prolonged, and the use cost is lowered.