摘要
创新性地构建了荷叶全组分资源化利用技术体系,通过乙醇萃取与一步热解工艺协同制备天然生物染料(BND)和分级多孔碳材料(BCM)。结合场发射扫描电镜(FE-SEM)、X射线衍射(XRD)、傅里叶红外光谱(FT-IR)及拉曼光谱(Raman)等多维度表征手段,系统揭示了BCM的层级孔隙结构(微孔/介孔复合)与非晶-石墨相复合框架特征。实验结果表明,荷叶衍生BCM作为染料敏化太阳能电池(DSSC)对电极材料时展现出1.42%的光电转换效率,较传统石墨基器件提升83%。荷叶提取的BND被证实含有叶绿素(卟啉结构),可作为DSSC的天然光敏剂应用于光阳极。通过整合BND(光敏剂)与BCM(对电极)构建双组分生物质器件,实现最大输出功率密度0.15 mW/cm^(2)。该研究创新性地构建了生物质废弃物向能源转换功能材料协同转化的技术路径,不仅实现了废弃物全组分高值利用,更为发展低成本、可生物降解的新型光伏器件提供了理论依据与实践范式,在柔性光电器件领域展现出显著应用潜力。
This study innovatively established a technical system for the resource utilization of all components of lotus leaves.Natural bio-dye(BND)and hierarchically porous carbon material(BCM)were synergistically prepared through ethanol extraction coupled with a one-step pyrolysis process.Multidimensional characterization techniques,including field-emission scanning electron microscopy(FE-SEM),X-ray diffraction(XRD),Fourier-transform infrared spectroscopy(FT-IR),and Raman spectroscopy,were employed to systematically elucidate the hierarchical pore architecture(micro-/mesoporous composite)and amorphous-graphitic hybrid framework characteristics of BCM.Experimental results demonstrated that the lotus-derived BCM,when applied as a counter electrode material in dye-sensitized solar cells(DSSCs),achieved a photoelectric conversion efficiency of 1.42%,representing an 83%enhancement compared to conventional graphite-based devices.Furthermore,the extracted BND from lotus leaves was confirmed to contain chlorophyll(porphyrin structure)and functioned as a natural photosensitizer applied to the DSSC photoanode.By integrating BND(as the photosensitizer)and BCM(as the counter electrode)into a dual-component biomass-derived device,a maximum output power density of 0.15 mW/cm^(2)was attained.This research innovatively established a technological pathway for the synergistic conversion of biomass waste into energy-conversion functional materials.It not only realizes the high-value utilization of entire waste biomass components but also provides theoretical foundations and practical paradigms for developing low-cost,biodegradable photovoltaic devices,demonstrating significant application potential in the field of flexible optoelectronic devices.
作者
章丽娜
罗培
王席莹
王珏
徐顺建
ZHANG Lina;LUO Pei;WANG Xiying;WANG Jue;XU Shunjian(School of Intelligent Manufacturing,Huzhou College,Huzhou 313000,China)
出处
《广州化学》
2025年第4期61-65,共5页
Guangzhou Chemistry
基金
浙江省自然科学基金项目(Y24E020055)
湖州市科技项目(2024GZ164)
湖州学院科研项目(2024HXKM03)。
