Synthesis of Fe-doped ZnO by parallel flow precipitation method and its photocatalytic denitrification performance

MENG Qingming; WANG Jian

doi:10.11949/j.issn.0438-1157.20161231

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Synthesis of Fe-doped ZnO by parallel flow precipitation method and its photocatalytic denitrification performance

更新时间：2025-11-26

- Synthesis of Fe-doped ZnO by parallel flow precipitation method and its photocatalytic denitrification performance
- CIESC Journal Issue 1, Pages: 437-443(2017)
- 作者机构：
  
  1. 东北石油大学化学化工学院,黑龙江,大庆,163318
  2. 渤海大学化学化工学院,辽宁,锦州,121013
- 作者简介：
- 基金信息：
- DOI：10.11949/j.issn.0438-1157.20161231
  CLC： 643
- Online First：05 January 2017，
  
  Published：05 January 2017
- 稿件说明：
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MENG Qingming, WANG Jian. Synthesis of Fe-doped ZnO by parallel flow precipitation method and its photocatalytic denitrification performance[J]. CIESC Journal, 2017, (1): 437-443.
DOI：

MENG Qingming, WANG Jian. Synthesis of Fe-doped ZnO by parallel flow precipitation method and its photocatalytic denitrification performance[J]. CIESC Journal, 2017, (1): 437-443. DOI： 10.11949/j.issn.0438-1157.20161231.

摘要

以Zn（NO3）2·6H2O与NH3·H2O为原料，采用并流沉淀法合成了Fe掺杂ZnO，通过X射线衍射（XRD）、场发射扫描电镜（FE-SEM）、透射电子显微镜（TEM）、紫外可见漫反射（UV-vis DRS）及比表面积（BET）等测试方法对产物的结构与形貌进行了表征；并以吡啶（Py）石油醚溶液为模拟污染物，考察了其光催化脱氮性能。结果表明，当Fe掺杂量不高于1.0%时，所有复合物均拥有单一的六方晶系纤锌矿结构，尚未出现其他物相。Fe掺杂可有效抑制ZnO晶粒的生长，增大产品的比表面积，并拓宽其光响应范围，显著提高催化剂的光催化活性。处理初始浓度为10 μg·g-1的Py石油醚溶液，0.50% Fe光催化剂投加量为0.6 g·L-1，光照距离10 cm，经150 W高压汞灯照射50 min，Py的降解率达到65.3%。

Abstract

The Fe-doped ZnO was synthesized by a parallel flow precipitation method with Zn(NO3)2·6H2O and NH3·H2O as raw materials.The morphology and structure of as-synthesized products were characterized by X-ray diffraction(XRD)

field emission scanning electron microscopy(FE-SEM)

transmission electron microscopy(TEM)

UV-visible diffuse reflectance spectra(UV-vis DRS) and Brunauer-Emmett-Teller(BET) for surface area analysis.Pyridine(Py) petroleum ether solution was used as model pollutant to investigate the denitrification performance of Fe-doped ZnO.The results illustrated that all of the Fe-doped ZnO products only comprise hexagonal wurtzite structure when the molar ratio of Fe/Zn from 0 to 1.0%.Fe doped ZnO photocatalysts exhibit much higher photocatalytic performance

which is ascribed to the decreased crystal size

increased specific surface area and reinforced absorbance ability in visible light range.When the concentration of Py is 10 μg·g-1 and dosage of 0.50% Fe photocatalyst is 0.6 g·L-1

the degradation efficiency of Py is 65.3% under the irradiation of a 150 W mercury lamp with illumination distance of 10 cm for 50 min.

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