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A loaded carbon quantum dot/w 18 o 49 Preparation method of photocatalytic renewable porous carbon adsorbent

A technology of carbon quantum dots and porous carbon, which is applied in the field of material preparation, can solve the problems of easy recombination of electrons and holes, reduce photocatalytic activity, etc., and achieve the effect of increasing charge separation rate, improving catalytic activity, and good photocatalytic regeneration ability

Inactive Publication Date: 2021-09-03
HEILONGJIANG UNIV
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Problems solved by technology

W 18 o 49 The photocatalyst has a strong and tunable localized plasmon resonance effect in the near-infrared wavelength range of 780-2526nm, so it has good light absorption performance for the near-infrared region of sunlight, but pure W 18 o 49 In the use of photocatalysts, electron holes are easy to recombine at the defects, which greatly reduces the photocatalytic activity.

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  • A loaded carbon quantum dot/w <sub>18</sub> o <sub>49</sub> Preparation method of photocatalytic renewable porous carbon adsorbent
  • A loaded carbon quantum dot/w <sub>18</sub> o <sub>49</sub> Preparation method of photocatalytic renewable porous carbon adsorbent
  • A loaded carbon quantum dot/w <sub>18</sub> o <sub>49</sub> Preparation method of photocatalytic renewable porous carbon adsorbent

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Embodiment 1

[0028] Embodiment 1 loaded carbon quantum dots / W 18 o 49 Preparation of Photocatalytic Renewable Porous Carbon Adsorbent:

[0029] (1) Preparation of porous carbon materials: High-concentration furfural wastewater was used as a carbon source to prepare precursor carbon materials by hydrothermal method. KOH activation makes the carbon material have a larger specific surface area and adsorption capacity, and the precursor carbon material soaked in KOH and dried in N 2 Calcined at 800°C under protection, the heating rate was 3°C / min, and calcined at constant temperature for 1 hour to obtain a porous carbon adsorbent with high-concentration furfural wastewater as a carbon source;

[0030] Described high-concentration furfural waste water is the furfural waste water under the initial distillation tower containing the furfural of 15% by volume fraction;

[0031] The concentration of the KOH aqueous solution is 1.12g / mL; the soaking time is 10h.

[0032] (2) Preparation of carbon...

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Abstract

The invention discloses a loaded carbon quantum dot / W 18 o 49 The invention discloses a method for preparing a photocatalytic renewable porous carbon adsorbent, which relates to the technical field of material preparation, and the method comprises: (1) performing hydrothermal reaction on furfural wastewater, soaking the obtained precursor carbon material in KOH aqueous solution, and calcining to obtain the porous carbon adsorbent (2) mixed hydrothermal reaction of citric acid and urea, after filtration, dialysis, freeze-drying, obtain carbon quantum dots, make carbon quantum dot ethanol solution; (3) WCl 6 Dissolved in absolute ethanol, add polyethylene glycol, carbon quantum dot ethanol solution and porous carbon adsorbent to the mixture, hydrothermal reaction, and separate to obtain loaded carbon quantum dots / W 18 o 49 Photocatalytically regenerable porous carbon adsorbents. The method realizes resource utilization of furfural wastewater, effective treatment of phenol-containing wastewater, and photocatalytic regeneration and recycling of porous carbon materials by the method, and has good production and application value.

Description

technical field [0001] The invention relates to the technical field of material preparation, in particular to a kind of high-concentration furfural wastewater used as a carbon source to prepare porous carbon-loaded carbon quantum dots / W 18 o 49 Photocatalytic methods for the preparation of regenerable adsorbents. Background technique [0002] With the rapid development of the national economy, phenol as an important chemical raw material is widely used in oil refining, coal conversion, petrochemical, pharmaceutical, pesticide and other industries. Because phenol is carcinogenic, teratogenic and refractory to biodegradability, phenol-containing wastewater is not Discharge into the environment after treatment seriously threatens human health. At present, the treatment of phenol-containing wastewater has become a hot issue in the field of sewage treatment. The adsorption of porous carbon materials has attracted extensive attention because of its advantages of high efficiency,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/20B01J20/34B01J20/30C02F1/28C02F101/34
CPCB01J20/06B01J20/20B01J20/205B01J20/3416B01J20/3441B01J2220/4887C02F1/283C02F2101/345
Inventor 王滨松于晨阳
Owner HEILONGJIANG UNIV
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