Jiangnan University

Ying Li

Gang Shi

Caihua Ni

Dawei Wang

Xinxin Sang

Jingguo Yang

Likui Wang

Xuan Jin

Xiulan Sun

Yuliang Cheng

Fuwei Pi

Jie Chen

Ling Liu

Yuanyuan Zhang

Ziye Yin

Hongyan Miao

Jianhua Li

Lin Lin

Fei He

Lifeng Chi

Nan Lv

The disclosure discloses a high-flux and ultra-sensitive detection dot array enhancement chip, and belongs to the field of food safety detection. In the disclosure, single-layer Au nano-particles are chemically bonded onto a hydrophilic substrate, an Au nano-material is naturally deposited in holes of the chip under an electrostatic adsorption action, and a regular dot array is formed. Au particles distributed in the holes are separated with a particle surfactant (CTAB) to form plasma gaps so as to enhance the self-assemble of Au nano-particles distributed on hot-spots for a long range effect, thereby improving the sensing signal in detection efficiency and sensitivity of the chip.

High-flux ultra-sensitive detection dot array enhancement chip

It is disclosed purifies industrial lignin, performs Mannich reaction on purified industrial lignin, aldehyde and amino acid, simultaneously dopes nitrogen and sulfur elements into lignin, and performs high-temperature activation to obtain the carbonized amino acid modified lignin in accordance with a principle of green chemistry; a porous carbon material is prepared from the carbonized amino acid modified lignin by means of a two-step activation method, and an electrochemical workstation is applied to investigate electrochemical performance of the carbonized amino acid modified lignin as a supercapacitor; layered porous carbon having high specific surface area is prepared, the layered porous carbon has high specific heat capacity and stable cycle performance without attenuation when the supercapacitor is prepared from the layered porous carbon, and the method used has a wide application prospect in the aspect of preparing a porous carbon material for the supercapacitor.

Carbonized amino acid modified lignin and preparation method therefor

The present invention relates to a phenol-based resin adhesive from lignin pyrolysis, comprising a polymer of phenol and formaldehyde from lignin pyrolysis, wherein the phenol from lignin pyrolysis comprises at least two phenols from lignin pyrolysis or at least two lignin-modified phenols from lignin pyrolysis. A repeat unit of the polymer of phenol and formaldehyde from lignin pyrolysis comprises at least two phenol units from lignin pyrolysis or at least two lignin-modified phenol units from lignin pyrolysis. According to the phenol-based resin adhesive from lignin pyrolysis in the present invention, by-products during the pyrolysis of lignin for power generation are used as raw materials, so it is environment-friendly and economical.

Phenol-based resin adhesive from lignin pyrolysis and its preparation method

The present invention discloses a bionic SERS substrate of a metal-based compound eye bowl structure, a construction method and application. The bionic SERS substrate of the metal-based compound eye bowl structure of the present invention consists of a metal bowl and a cone-shaped structure substrate in an ordered hierarchy manner. The metal bowl is of a continuously and closely arranged single-layer bowl structure. A height of the metal bowl is 0.01-10 &#x3bc;m, and a bowl opening diameter is 0.01-10 &#x3bc;m. A cone is a micron pyramid cone, and a height of the micron pyramid cone is 1-100 &#x3bc;m. The present invention assembles the metal bowl on a surface of the substrate of the micron pyramid cone structure with great fluctuation by a solid-liquid interface chemical reduction method and a small ball template method, and further constructs a 3D SERS substrate with a bionic compound eye structure.

Bionic SERS substrate with metal-based compound eye bowl structure and its construction method and application

The present invention discloses an SERS substrate of a metal-modified semiconductor-based bionic compound eye bowl structure and a construction method, and belongs to the technical field of nano materials. The present invention is based on a multi-time interface self-assembly method. Firstly, a small ball template is constructed by using a gas-liquid interface assembly process. Then, a semiconductor bowl structure array is induced to be formed by the template by using a solid-liquid interface assembly process. Next, a semiconductor bowl is assembled to a surface of a pyramid-shaped cone to form a bionic compound eye structure by using a transfer process. Finally, a surface of the bionic compound eye structure is modified with a layer of uniformly distributed metal particles by a physical deposition method or a chemical deposition method, thereby forming the SERS substrate of the metal-modified semiconductor-based bionic compound eye bowl structure.

SERS substrate of metal-modified semiconductor-based bionic compound eye bowl structure and construction method

The invention relates to a three-dimensional bionic composite material based on refection elimination and double-layer P/N heterojunctions. The preparation method of the composite material comprises: (1) anisotropically etching a silicon wafer with an alkaline solution, to form compactly arranged tetragonal pyramids on the surface of the silicon wafer; (2) performing hydrophilic treatment on the silicon wafer, growing TiO2 crystal seeds on the surface of the silicon wafer, and calcining the silicon wafer in a muffle furnace; (3) putting the silicon wafer obtained in the step (2) into a reaction kettle, and growing TiO2 nano-rods on the side walls of silicon cones by a hydrothermal synthesis method; and (4) depositing PPY nano-particles on the TiO2 nano-rods. The composite material has good refection elimination performance and efficient photogenerated charge separation capability, and is applicable in fields of photo-catalysis, photoelectric conversion devices, solar cells and the like.

Silicon-titanium dioxide-polypyrrole three-dimensional bionic composite material based on hierarchical assembly and use thereof

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Wuxi, China

Ying Li