稀土掺杂钨酸钴纳米纤维的合成及光热协同光催性能研究

doi:10.3976/j.issn.1002-4026.2025140

Abstract

Abstract: To achieve efficient utilization of the full solar spectrum and enhance the photocatalytic performance of cobalt tungstate (CoWO₄), one-dimensional CoWO₄ nanomaterials doped with rare-earth (RE) elements (Ce³⁺, Eu³⁺, Yb³⁺, and La³⁺) were synthesized using electrospinning technology. The structural, morphological, photocatalytic, and photothermal sterilization properties of the synthesized nanomaterials were systematically investigated. X-ray diffraction analysis revealed that all samples retained the monazite monoclinic structure of wolframite, with RE doping inducing lattice distortion. Scanning electron microscopy and transmission electron microscopy results demonstrated that doping increased the surface roughness of the nanotubes and generated a porous structure, thereby providing more active sites for reactions. Photocatalytic performance tests showed that 7% Ce–CoWO₄ achieved a degradation rate of 90.54% for ciprofloxacin under visible light within 140 min and 81.84% under near-infrared (NIR) light within 7 h. Electrochemical tests indicated that RE doping effectively reduced charge-transfer resistance and enhanced the photocurrent response. In terms of photothermal performance, 5% Yb–CoWO₄ increased the temperature of the liquid system to 65℃ within 360 s under NIR irradiation, demonstrating excellent photothermal conversion capability. Antimicrobial experiments confirmed that the re-doped samples exhibited significant photothermal sterilization effects against Escherichia coli under NIR irradiation. This study provides new insights into the development of efficient, multifunctional photocatalytic materials with full-spectrum response capabilities.

Key words: Full solar spectrum, CoWO₄, Photocatalytic performance, Electrospinning, Rare-earth-doped, Photothermal antibacterial, Lattice distortion

CLC Number:

X799.3

WANG Ke , GUO Enyan , LU Qifang, HAO Xiaopeng. Rare-earth-doped cobalt tungstate nanofibers: Synthesis and photothermal-enhanced full-spectrum photocatalysis [J].Shandong Science, 0, (): 1-.

References

[1] 秦蓁. 仿生界面光热材料的制备及其太阳能转换应用研究[D]. 长春: 吉林大学, 2024. DOI:10.27162/d.cnki.gjlin.2024.007654.

[2] FAN M, LI X L, LIU L, et al. Synthesis, characterization, and photocatalytic activity of a carboxymethyl cellulose sodium-based hybrid material for efficient degradation of hexavalent chromium[J]. International Journal of Biological Macromolecules, 2025, 306: 141536. DOI:10.1016/j.ijbiomac.2025.141536.

[3] SUN N, SI X W, HE L T, et al. Strategies for enhancing the photocatalytic activity of semiconductors[J]. International Journal of Hydrogen Energy, 2024, 58: 1249-1265. DOI:10.1016/j.ijhydene.2024.01.319.

[4] DONG Q, SUN Y X, WANG F, et al.In situfabrication of all amorphous TiO2-coupled-MoSx photocatalysts for on-demand photocatalytic hydrogen production by using UV light[J]. Sustainable Energy & Fuels, 2024, 8(21): 4907-4913. DOI:10.1039/D4SE01079E.

[5] CHEN S Q, HU Y H. Color TiO2Materials as emerging catalysts for visible-NIR light photocatalysis, A review[J]. Catalysis Reviews, 2024, 66(5): 1951-1991. DOI:10.1080/01614940.2023.2169451.

[6] TIAN H Y, LIU X, LIANG Z Q, et al. Gold nanorods/g-C3N4heterostructures for plasmon-enhanced photocatalytic H2evolution in visible and near-infrared light[J]. Journal of Colloid and Interface Science, 2019, 557: 700-708. DOI:10.1016/j.jcis.2019.09.075.

[7] QIAO J, ZHANG H B, LI G S, et al. Fabrication of a novel Z-scheme SrTiO3/Ag2S/CoWO4composite and its application in sonocatalytic degradation of tetracyclines[J]. Separation and Purification Technology, 2019, 211: 843-856. DOI:10.1016/j.seppur.2018.10.058.

[8] KANEVA N, BOJINOVA A, PAPAZOVA K, et al. Photocatalytic purification of dye contaminated sea water by lanthanide (La3+, Ce3+, Eu3+) modified ZnO[J]. Catalysis Today, 2015, 252: 113-119. DOI:10.1016/j.cattod.2014.12.008.

[9] 徐航. 稀土上转换粒子的光效调控机制及近红外光聚合研究[D]. 无锡: 江南大学, 2023. DOI:10.27169/d.cnki.gwqgu.2023.000243.

[10] SUKRITI, CHAND P, SINGH V. Enhanced visible-light photocatalytic activity of samarium-doped zinc oxide nanostructures[J]. Journal of Rare Earths, 2020, 38(1): 29-38. DOI:10.1016/j.jre.2019.02.009.

[11] HU J H, YAO X, HAN K Y, et al. Boosted near-infrared photothermal conversion in rare earth ions-doped 2D SnSe nanosheets for solar-powered water evaporation systems[J]. Small, 2024, 20(49): e2405742. DOI:10.1002/smll.202405742.

[12] 邓伶俐. 基于静电纺丝技术的明胶复合纳米纤维的构建及其应用研究[D]. 杭州: 浙江大学, 2019. DOI:10.27461/d.cnki.gzjdx.2019.000338.

[13] HAN R T, ZHANG X Y, SHANG Z H, et al. Efficient wide-spectrum one-dimensional MWO4(M = Mn, co, and Cd) photocatalysts: Synthesis, characterization and density functional theory study[J]. Journal of Colloid and Interface Science, 2024, 662: 822-835. DOI:10.1016/j.jcis.2024.02.132.

[14] ZHENG B Z, FAN J Y, CHEN B, et al. Rare-earth doping in nanostructured inorganic materials[J]. Chemical Reviews, 2022, 122(6): 5519-5603. DOI:10.1021/acs.chemrev.1c00644.

[15] 林利添. 稀土离子的多格位占据及能量传递[J]. 发光学报, 2023, 44(12): 2120-2127.

[16] XIA J, ZHANG N, YANG Y J, et al. Lanthanide contraction builds better high-voltage LiCoO2batteries[J]. Advanced Functional Materials, 2023, 33(8): 2212869. DOI:10.1002/adfm.202212869.

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Rare-earth-doped cobalt tungstate nanofibers: Synthesis and photothermal-enhanced full-spectrum photocatalysis

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