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Preparation method and application of environment responsive PNIPAM/Bi2O3

An environmental response and reaction technology, applied in chemical instruments and methods, water/sludge/sewage treatment, organic compound/hydride/coordination complex catalysts, etc., can solve high cost, low efficiency, difficult morphology, etc. problems, to achieve the effect of low cost, easy operation and short synthesis time

Active Publication Date: 2020-04-07
JIANGSU UNIV
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Problems solved by technology

[0004]In recent years, research on the application of intelligent responsive materials to the field of photocatalysis has received widespread attention. The introduction of intelligent responsive materials realizes the control of the process of photocatalyst adsorption and degradation of pollutants However, there are only a few reports on the combination of inorganic semiconductors and smart responsive materials, and the preparation idea is to synthesize inor

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  • Preparation method and application of environment responsive PNIPAM/Bi2O3
  • Preparation method and application of environment responsive PNIPAM/Bi2O3
  • Preparation method and application of environment responsive PNIPAM/Bi2O3

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Embodiment 1

[0045] (1) Pure Bi 2 o 3 Preparation of:

[0046] Weigh 0.485g (1mmol) of bismuth nitrate pentahydrate and 0.36g (9mmol) of sodium hydroxide and dissolve them in 50ml of n-amyl alcohol, stir magnetically until they are completely dissolved, and then transfer them to a microwave reactor. The microwave parameters are set to 800W, 70 ℃, reacted for 90min, and then repeatedly washed several times with absolute ethanol (filtered and centrifuged), and recorded as sample A until use.

[0047] (2) Environment-responsive PNIPAM / Bi 2 o 3 :

[0048] Weigh 0.485g (1mmol) of bismuth nitrate pentahydrate and 0.36g (9mmol) of sodium hydroxide and dissolve them in 50ml of n-amyl alcohol, stir magnetically until they are completely dissolved, and then transfer them to a microwave reactor. The microwave parameters are set to 800W, 70 ℃, react for 90min, after the reaction, add 0.5g NIPAM (N-isopropylacrylamide) and 0.01g AIBN into the microwave reaction bottle, continue the microwave react...

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Abstract

Belonging to the technical field of environmental material synthesis, the invention particularly relates to a preparation method and application of environment responsive PNIPAM/Bi2O3. Specifically, the environment responsive PNIPAM/Bi2O3 is successfully synthesized by a novel one-step continuous microwave method. The whole process is simple to operate, short in time and high in efficiency, and realizes optimization from no special morphology to a rod-like structure without changing the Bi2O3 crystal structure. And secondly, the coating of PNIPAM endows the composite material with catalytic and sensitive characteristics, and through change of the external condition temperature and pH, the adsorption and degradation properties of the environment responsive PNIPAM/Bi2O3 can be controlled. The work not only develops a new one-step continuous microwave synthesis method, but also opens up a new thought for meeting the controllability requirement of materials in a special environment.

Description

technical field [0001] The invention belongs to the technical field of environmental material synthesis, in particular to an environment responsive PNIPAM / Bi 2 o 3 The preparation method, and its controllable photocatalytic degradation of ciprofloxacin. Background technique [0002] In recent years, semiconductor photocatalysis technology has attracted much attention because of its energy saving and environmental protection. Conventional photocatalysts are easily limited by their wide bandgap, photocorrosion, toxicity, and low utilization of visible light. As an emerging bismuth-based photocatalyst, Bi 2 o 3 has many advantages. It has a short band gap, low redox potential, non-toxicity, low cost, and strong visible-light responsiveness. However, Bi 2 o 3 There are still many problems in practical application. There are various components in actual wastewater, such as acidity, alkalinity, anions and cations, which will affect the Bi 2 o 3 activity. This is mainly...

Claims

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Application Information

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IPC IPC(8): B01J31/26C02F1/30C02F101/38C02F101/34C02F101/36
CPCB01J31/26B01J35/004C02F1/30C02F2101/38C02F2101/34C02F2101/36C02F2305/10Y02W10/37
Inventor 逯子扬朱晓蝶储金宇刘馨琳宋旼珊周国生于泽惠颜欢
Owner JIANGSU UNIV
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