韩铭,张全国,周楠,张志萍

• 1:河南农业大学农业农村部可再生能源新材料与装备重点实验室

摘要(Abstract)：

【目的】探究光催化纳米颗粒对玉米秸秆光合生物制氢工艺的影响机制，提高光合生物制氢产氢效率并增加氢气产量。【方法】分别将二氧化钛纳米颗粒(titanium dioxide nanoparticles, TiO_2 NPs)和氧化锌纳米颗粒(zinc oxide nanoparticles, ZnO NPs)作为光催化剂添加在光合细菌HAU-M1的产氢体系中，以累计氢气产量、氢气含量及pH值为试验指标，研究光催化纳米颗粒对光合细菌HAU-M1产氢工艺的影响规律。【结果】TiO_2 NPs在质量浓度为500 mg·L~(-1)时，可获得最大的累计氢气产量为673 mL,比对照组增长7.4%。可缩短产氢周期24 h,在120 h就可结束产氢。ZnO NPs质量浓度为100、200、300、400、500 mg·L~(-1)时累计氢气产量分别514、533、480、407、368 mL,与对照组(0 mg·L~(-1))累计氢气产量563 mL相比降低了8.7%、5.3%、14.7%、27.7%、34.6%。同时，ZnO NPs质量浓度为100、200、300、400、500 mg·L~(-1)时氢气含量分别为52.3%、50.5%、48.8%、51.0%、42.3%,除质量浓度为500 mg·L~(-1)外，与对照组(0 mg·L~(-1))氢气含量48.7%相比有所提升。TiO_2 NPs对光合细菌产氢工艺参数pH值影响微弱，ZnO NPs可显著提高光合细菌产氢工艺参数的pH值。【结论】TiO_2 NPs可以提高光合细菌产氢效率，增加氢气产量，而ZnO NPs对光合细菌产氢过程具有一定的抑制作用。

关键词(KeyWords)： TiO_2;ZnO;纳米颗粒;光催化;生物制氢

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金项目(52076068)

作者(Author): 韩铭,张全国,周楠,张志萍

DOI: 10.16445/j.cnki.1000-2340.20230228.001

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