Nanchang Hangkong University

Xubiao Luo

Liming Yang

Penghui Shao

Hui Shi

Shenglian Luo

Zichao Hu

Zhen Yu

Kai Yu

Kai Zhang

Xiao Xiao

Weili Dai

Xiang Lu

Tingxi Liu

Xin Sheng

Deng You

Mingming Peng

Xuan Ding

The present disclosure provides a three-dimensional alkynyl-containing porous aromatic framework polymer and a preparation method and use thereof. The polymer has a structure represented by Formula I: The preparation method includes: under a protective atmosphere, mixing tetrakis(p-bromophenyl)methane, 1,3,5-triethynyl benzene, a catalyst and an amine solvent, and subjecting to a Sonogashira-Hagihara coupling reaction to obtain the three-dimensional alkynyl-containing porous aromatic framework polymer having the structure represented by Formula I.

Three-dimensional alkynyl-containing porous aromatic framework polymer and preparation method and use thereof

The invention relates to a method for preparing amorphous molybdenum oxide adsorption material and an application thereof. The invention aims to solve the technical problem of low recovery efficiency of silver ions in coexisting silver-containing wastewater in the prior art. The method of the present invention includes:1) preparation of electrolyte; and 2) subjecting to cyclic voltammetry. The amorphous molybdenum oxide adsorption material prepared by the present invention is used as an adsorbent for adsorbing and reducing silver ions in wastewater. The invention successfully prepares amorphous molybdenum oxide (MoOx) by cyclic voltammetry, which has a highly selective reduction adsorption for Ag. Silver ions and the adsorbent MoOx could be subjected to redox reaction to remove silver ions in water. The removal efficiency of the silver ions in wastewater by the amorphous molybdenum oxide prepared by cyclic voltammetry of the invention is up to 99.85%.

Method for preparing amorphous molybdenum oxide adsorption material and application thereof

Disclosed is a method for preparing an acid-resistant Zr-metal-organic framework (Zr-MOF) material with selective adsorption of hexavalent chromium, which is specifically a method for preparing a MOF material with selective adsorption of hexavalent chromium. The present invention aims to solve the technical problems that the existing MOFs have poor water stability, is unstable in an aqueous solution, and therefore may structurally collapse. In addition, the micropore characteristics of most MOFs have affected the mass transfer rate of the adsorbate, which in turn limits the industrial application thereof. The MOF of the present invention has excellent water stability and acid resistance, showing a strong adaptability and great potential in treating mostly acidic industrial wastewater. As a new functional material for water treatment, the MOF has optimal selective adsorption capacity and a desirable adsorption capacity for hexavalent chromium in water, which improves the recycling and later resource utilization.

Method for preparing acid-resistant Zr-MOF material with selective adsorption of hexavalent chromium

A process for separate removal and recovery of heavy metals from industrial wastewater is provided. The wastewater to be treated flows through adsorbents after filtration and adjustment of a pH to about 3 to 7 to obtain the adsorbents which have adsorbed corresponding heavy-metal ions, which are then eluted from the corresponding adsorbents using an acidic solution such that eluates containing the corresponding heavy-metal ions are obtained.

Process for separate removal and recovery of heavy metals from industrial wastewater

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Nanchang, China

Xubiao Luo