A Low-nanosized Broad Spectrum Photocatalyst for Treatment of Pharmaceutical and Industrial Pollutants: New Ce0.97Fe0.03Zn0.04O2 Composition

IF 3.8 4区环境科学与生态学 Q2 ENVIRONMENTAL SCIENCES Water, Air, & Soil Pollution Pub Date : 2024-12-11 DOI:10.1007/s11270-024-07680-7

Nabil Al-Zaqri

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Abstract

Nanostructured Fe/Zn codoped CeO₂ photocatalyst revealed high visible light mineralization efficiencies for removal of pharmaceutical ciprofloxacin and industrial reactive yellow 145 dye. Nanocrystalline pure and Fe/Zn codoped CeO₂ (Ce_0.93Fe_0.03Zn_0.04O₂) powders have been synthesized by a simple coprecipitation manner. The X-ray crystal structure analysis proved the formation of face-centered cubic CeO₂ phase with low nano-crystallite sizes (7–9 nm). The transmission electron microscope (TEM) images of the two samples illustrated that the powders are composed of very small nano-sized particles have approximately spherical view. All particles of both powders have nearly homogenous size and shape. The Kubelka–Munk plot demonstrated that the energy band gap of the synthesized CeO₂ nanopowder was 3.18 eV. The modification of CeO₂ nanopowder by Fe/Zn ions improved the visible light absorption and also reduced its band gap energy to 2.52 eV. Environmentally, 98% and 96% removal efficiencies for reactive yellow 145 dye and medical ciprofloxacin antibiotic were realized by Fe/Zn codoped CeO₂ nanocatalyst. The perfect mineralization, good reusability and high elimination of different concentrations (10–30 ppm) encourages the use of this nanocatalyst for wastewater treatment. The radical trapping tests verified that the superoxide and hydroxyl radicals are the energetic species during the photodegradation reaction of pharmaceutical ciprofloxacin and industrial reactive yellow 145 dye.

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用于制药和工业污染物处理的低纳米广谱光催化剂：ce0.97 fe0.03 zn0.040 o2新组合物

纳米结构Fe/Zn共掺杂CeO2光催化剂具有较高的可见光矿化效率，可用于去除药物环丙沙星和工业活性黄145染料。采用简单共沉淀法合成了纯Fe/Zn共掺杂的纳米晶CeO2 （Ce0.93Fe0.03Zn0.04O2）粉末。x射线晶体结构分析证实形成了面心立方CeO2相，具有低纳米晶粒尺寸（7 ~ 9 nm）。两种样品的透射电子显微镜（TEM）图像表明，粉末由非常小的纳米级颗粒组成，具有近似球形的视角。两种粉末的所有颗粒几乎具有相同的大小和形状。Kubelka-Munk图表明，合成的CeO2纳米粉体的能带隙为3.18 eV。Fe/Zn离子对CeO2纳米粉体进行改性后，其可见光吸收率提高，带隙能降至2.52 eV。Fe/Zn共掺杂CeO2纳米催化剂对活性黄145染料和医用环丙沙星抗生素的去除率分别达到98%和96%。完美的矿化，良好的可重复使用性和不同浓度（10-30 ppm）的高消除性鼓励使用该纳米催化剂进行废水处理。自由基捕获试验证实了超氧自由基和羟基自由基是药物环丙沙星和工业活性黄145染料光降解过程中的高能物质。

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来源期刊

Water, Air, & Soil Pollution 环境科学-环境科学

CiteScore

4.50

自引率

6.90%

发文量

448

审稿时长

2.6 months

期刊介绍： Water, Air, & Soil Pollution is an international, interdisciplinary journal on all aspects of pollution and solutions to pollution in the biosphere. This includes chemical, physical and biological processes affecting flora, fauna, water, air and soil in relation to environmental pollution. Because of its scope, the subject areas are diverse and include all aspects of pollution sources, transport, deposition, accumulation, acid precipitation, atmospheric pollution, metals, aquatic pollution including marine pollution and ground water, waste water, pesticides, soil pollution, sewage, sediment pollution, forestry pollution, effects of pollutants on humans, vegetation, fish, aquatic species, micro-organisms, and animals, environmental and molecular toxicology applied to pollution research, biosensors, global and climate change, ecological implications of pollution and pollution models. Water, Air, & Soil Pollution also publishes manuscripts on novel methods used in the study of environmental pollutants, environmental toxicology, environmental biology, novel environmental engineering related to pollution, biodiversity as influenced by pollution, novel environmental biotechnology as applied to pollution (e.g. bioremediation), environmental modelling and biorestoration of polluted environments. Articles should not be submitted that are of local interest only and do not advance international knowledge in environmental pollution and solutions to pollution. Articles that simply replicate known knowledge or techniques while researching a local pollution problem will normally be rejected without review. Submitted articles must have up-to-date references, employ the correct experimental replication and statistical analysis, where needed and contain a significant contribution to new knowledge. The publishing and editorial team sincerely appreciate your cooperation. Water, Air, & Soil Pollution publishes research papers; review articles; mini-reviews; and book reviews.