公开(公告)号：US20230183407A1

公开(公告)日：2023-06-15

申请号：US17938110

申请日：2022-10-05

Applicant: Dalian University of Technology

Inventor： Shufen ZHANG ,  Changtong ZHOU ,  Wenbin NIU ,  Wei MA ,  Bingtao TANG ,  Suli WU

IPC: C08F222/10

CPC classification number: C08F222/1063

Abstract: A double-inverse opal photonic crystal resin film is formed by embedding nanospheres in pores of polyacrylate inverse opal framework material and then filling the pores of the double-inverse opal photonic crystal resin film with an ethanol solution with hydrophilic acrylamide dissolved therein followed by photopolymerization to form a polyacrylamide network, so as to obtain the double-inverse opal photonic crystal resin film using water as ink. A mass fraction of hydrophilic acrylamide in the ethanol solution is 2 to 8 wt.%. The resin film can induce water to penetrate into the pores of the double-inverse opal photonic crystal resin film, making the nanospheres in the pores of the inverse opal framework distribute from random to order under the action of buoyancy force, thereby eliminating scattering interference and producing brilliant structural colors by regulating refractive index contrast.

公开(公告)号：US20240191080A1

公开(公告)日：2024-06-13

申请号：US18546986

申请日：2021-09-02

Applicant: DALIAN UNIVERSITY OF TECHNOLOGY

Inventor： Shufen ZHANG ,  Lei LI ,  Bingtao TANG ,  Rongwen LV ,  Wei MA ,  Suli WU ,  Wenbin NIU ,  Benzhi JU

IPC: C09B29/00 ,  B01J19/00 ,  B01J19/18

CPC classification number: C09B29/00 ,  B01J19/0066 ,  B01J19/1812 ,  B01J2219/00195

Abstract: A method for producing water-soluble azo dyes by utilizes continuous diazotization reaction and continuous coupling reaction in a pipeline reactor. The diazo component, hydrochloric acid and sodium nitrite are simultaneously fed at the bottom of the pipeline reactor at room temperature, to perform a diazotization reaction in the pipeline and leave the diazotization reaction site in time, followed by performing the coupling reaction with the introduced coupled component. Under stirring of micro stirring blades, the materials at each flow layer are uniformly mixed and reacted, and the reaction materials flow upward under the action of a feed driving force and are discharged from the top of the continuous reactor to produce a water-soluble azo dye.

公开(公告)号：US20230003993A1

公开(公告)日：2023-01-05

申请号：US17756714

申请日：2020-09-08

Applicant: DALIAN UNIVERSITY OF TECHNOLOGY

Inventor： Shufen ZHANG ,  Yong QI ,  Wenbin NIU ,  Suli WU ,  Wei MA ,  Bingtao TANG

IPC: G02B26/00 ,  C08F222/10 ,  C08J5/18 ,  G02B1/00

Abstract: A bilayer photonic crystal photoswitch thin-film device having the optical characteristics of both 2D and 3D photonic crystals, and a preparation method thereof are provided. When the bilayer photonic crystal photoswitch thin-film device is rotated periodically, different colors can be observed at a fixed rotation angle, that is, the device has the attribute of changing colors by means of rotation, and can thus realize the opening and closing of an optical path. The bilayer photonic crystal photoswitch thin-film new device has broad application prospects in the fields of photoswitches, optical waveguides, optical prisms, warming signs, anti-counterfeiting and information coding, etc.

公开(公告)号：US20180291266A1

公开(公告)日：2018-10-11

申请号：US15766187

申请日：2017-02-24

Applicant: DALIAN UNIVERSITY OF TECHNOLOGY

Inventor： Wei MA ,  Fanqing MENG ,  Liyan GUO ,  Lei WU ,  Shibo DUAN ,  Zhen CHEN ,  Shuangen YU ,  Ren WANG ,  Jun XU

IPC: C09K11/65 ,  C02F1/28

Abstract: The present invention relates to the technology of material surface modification and the preparation adsorption new material, which involves the preparation of CQDs and the application of CQDs on modifying water purification function material. Firstly, the CQDs with rich functional groups and specific graphene structure has been prepared based on the low-cost biomass. Then, modified the traditional adsorbent by prepared CQDs under the in situ synthesis process. Secondly, synthesis the CQDs basic on the organic waste-water under low-temperature hydrothermal treatment process. Then, prepared the CQDs modified water purification material by collecting the CQDs under the flocculation process. This invention can be used in the widely used in the field of modification and preparation of functional materials, because of it not only gives a new method to synthesis low-cost and high performance water purification material, but also provide a new idea to treat high toxicity and refractory organic waste-water.

公开(公告)号：US20220113258A1

公开(公告)日：2022-04-14

申请号：US17645013

申请日：2021-12-17

Applicant: DALIAN UNIVERSITY OF TECHNOLOGY

Inventor： Shufen ZHANG ,  Lei LI ,  Huaixi LIU ,  Rongwen LV ,  Bingtao TANG ,  Wei MA

IPC: G01N21/78

Abstract: Provided is a test paper kit for rapid graded quantitative detection of aromatic primary amine content in an acidic solution and an application thereof, and belongs to the field of detection. A test paper kit for rapid graded quantitative detection of aromatic primary amine content in an acidic solution, including 9 independent test paper sheets I-IX, wherein the test paper sheets are obtained by soaking filter paper in the following solutions respectively and then drying the filter paper: the test paper sheets I-III are soaked in alcoholic solutions of p-dimethylaminobenzaldehyde with three concentrations respectively; the test paper sheets IV-VI are soaked in alcoholic solutions of p-hydroxybenzaldehyde with three concentrations respectively, and the test paper sheets VII-IX are soaked in alcoholic solutions of p-methoxybenzaldehyde with three concentrations respectively.

公开(公告)号：US20180339285A1

公开(公告)日：2018-11-29

申请号：US15776985

申请日：2017-03-02

Applicant: DALIAN UNIVERSITY OF TECHNOLOGY

Inventor： Wei MA ,  Shibo DUAN ,  Shuangen YU ,  Fanqing MENG ,  Ren WANG ,  Jun XU ,  Liyan GUO ,  Lei WU ,  Zhuo LIU ,  Dazhi TAN

IPC: B01J20/24 ,  B01J20/28 ,  C22B34/32 ,  C22B3/24

Abstract: The invention belongs to the field of chemical separation, hydrometallurgy and resource recovery and provides a method for preparing and applying of ion-keeper adsorbent. By adjusting the pH to selective oxidation to achieve the oxidation of ferrous iron into ferric iron. Separates the iron after the hydrothermal reaction; By using of ion imprint “ion keeper” effect and biomass as raw materials, to prepare the adsorbent with internal rules, hierarchical pores and high selectivity. It can be used for deep purification of chromium solution, such as iron, aluminum, vanadium and other impurities in the solution; After the deep purification of chromium solution, then adjusting the pH, adding appropriate hydrating agent, by hydrothermal precipitation treatment of chrome, filtration, acid washing and calcination to obtain chromium oxide crystal. It achieves the purification of chromium, iron, aluminum and chromium. The recycling and comprehensive utilization of waste resources are also realized. The process is simple, the iron, aluminum, vanadium and other impurities are in the selective adsorption. Chromium solution after deep purification can be processed for high purity chromium products to provide technical support.