林业工程学报2025，Vol.10Issue(3)：54-60,7.DOI:10.13360/j.issn.2096-1359.202403034
钼酸铋-木质纤维光催化材料的制备与应用
Preparation and application of bismuth molybdate-wood fiber photocatalysts
摘要
Abstract
The environmental crisis is an important factor limiting human development.Water pollution,caused by the discharge of high organic content from various industrial processes,is one of the most common environmental pollution issues.The printing and dyeing industry is a significant source of industrial wastewater,with a daily discharge of approximately 3×106 to 4×106 m3 in China.The treatment methods for printing and dyeing wastewater include physical and chemical approaches,and as well as various process combinations.Among these methods,semiconductor photocatalytic technology is regarded as an effective approach for treating organic dyes due to its advantages,including low energy consumption,mild reaction conditions,environmental friendliness,and high efficiency.Therefore,it is widely applied to treat organic dyes in wastewater.The preparation of high-performance photocatalytic materials is the key to photocatalytic technology and has attracted extensive research.In addition,biomass is currently the only renewable carbon source that can replace petroleum resources to produce energy,materials,and chemicals.Biomass-derived carbon is an excellent material for the treatment of organic pollutants.Wood fiber is a renewable and multifunctional biomass material.A green and novel bismuth molybdate(Bi2 MoO6)-wood fiber photocatalyst was prepared by the hydrothermal method in this study.The samples were characterized by the X-ray diffraction(XRD),infrared spectrometer(IR),scanning electron microscopy(SEM-EDS),X-ray photoelectron spectroscopy(XPS),ultraviolet-visible diffuse reflectance spectra(UV-Vis DRS),and photoluminescence spectroscopy(PL).The results demonstrated that Bi2 MoO6 particles were successfully dispersed on the surface of wood fibers,reducing particle agglomeration.This composite structure enhanced the visible light absorption of Bi2 MoO6,narrowed its bandgap,decreased the recombination probability of photogenerated electron-hole pairs,and significantly improved the photocatalytic degradation efficiency of the MB solution.The visible-light catalytic degradation of methylene blue(MB)as a simulated pollutant was investigated.The results showed that the photocatalytic performance of the Bi2 MoO6-wood fiber composite was significantly enhanced.The 50%Bi2 MoO6-wood fiber composite achieved a photocatalytic degradation efficiency of 96%,which was 2.09 times higher than that of pure bismuth molybdate.The loose and porous structure of wood fibers promoted the mass transfer process of dye molecules.The surface of wood fibers had chemical groups such as hydroxyl and carboxyl groups,which can effectively anchor dye molecules through chemical bonding for photocatalytic degradation,improving the degradation rate.Repeatable experiments showed that the composite was stable during the photodegradation of MB solution.The proposed material provided a new idea for the application of biomass materials in the field of visible light catalysis.关键词
钼酸铋/木质纤维/生物质/光催化/亚甲基蓝(MB)Key words
Bi2 MoO6/wood fiber/biomass/photocatalysis/methylene blue(MB)分类
化学工程引用本文复制引用
白雪,王璇,王娟,徐丹,张进..钼酸铋-木质纤维光催化材料的制备与应用[J].林业工程学报,2025,10(3):54-60,7.基金项目
江苏省高校自然科学研究项目(20KJD150002) （20KJD150002）
中国博士后基金(2012M511254) （2012M511254）
江苏省大学生创新创业计划训练项目(202311460043Y). （202311460043Y）
