光敏剂敏化MIL-88A（Fe）光催化分解水制氢气的研究
收稿日期: 2025-02-21
网络出版日期: 2025-07-04
基金资助
云南省曲靖市科学技术局曲靖师范学院科技创新联合专项项目(KJLH2023ZD01);曲靖师范学院光催化净化光伏废水和回收退役光伏器件中贵金属博士创新团队项目;云南省高校协同创新中心（曲靖绿色光伏产业协同创新中心）项目;云南省科技厅科技人才与平台计划(202305AF150088);云南省科技厅科技人才与平台计划(202405AF140016);云南省地方本科高校基础研究联合专项项目(202301BA070001-078);曲靖市科创企业孵化中心有限公司横向项目;云南省基础研究专项-青年项目(202301AU070019)
Study on photocatalytic water splitting for hydrogen evolution over photosensitizer-sensitized MIL-88A（Fe）
Received date: 2025-02-21
Online published: 2025-07-04
光催化分解水制氢因过程温和、绿色环保、水和阳光资源充沛的优势而成为当前制备绿氢的重要途径。MIL-88A（Fe）化学性质稳定、光响应范围广且具有独特的呼吸效应，在光催化分解水制氢方面极具潜力。但MIL-88A（Fe）导带还原能力弱，通过光敏物质敏化可提升MIL-88A（Fe）的可见光利用率并调变MIL-88A（Fe）的导带电位，从而提升光催化剂的还原性。结果显示，MIL-88A（Fe）用量为10 mg，曙红Y（EY）和四碘荧光素钠盐（ErB）用量分别为10 mg时，析氢速率可分别达到16.93、12.41 mmol/（g·h），较单独使用MIL-88A（Fe）时，析氢速率分别提高268.7、197.0倍，这是因为EY和ErB可使MIL-88A（Fe）导带电位由-0.06 V（vs.NHE）分别负移至-0.61、-0.76 V（vs.NHE），故而显著提升MIL-88A（Fe）导带的还原能力。碱性环境下EY-MIL-88A（Fe）体系的光催化产氢效果要远优于酸性及中性环境，H2的2 h析出量最高可达67.3 mmol/g。此外，EY-MIL-88A（Fe）体系有较好的循环使用性，重复使用5轮后体系的产氢量仍可达到20.5 mmol/g。500 nm波长下EY-MIL-88A（Fe）体系的表观量子效率达到22.3%。结果显示，EY敏化下MIL-88A（Fe）具有高效的可见光光催化析氢作用，有良好的实际应用潜力。
关键词： 光催化; 分解水制氢; 敏化; MIL-88A（Fe）
王智娟 , 缪应纯 , 陈家福 , 王丽苹 , 胡柠檬 . 光敏剂敏化MIL-88A（Fe）光催化分解水制氢气的研究[J]. 无机盐工业, 2026 , 58(4) : 128 -136 . DOI: 10.19964/j.issn.1006-4990.2025-0085
Photocatalytic water splitting for hydrogen production has become a crucial approach for green hydrogen synthesis due to its mild conditions，environmental friendliness，and the abundance of water and sunlight resources.MIL-88A（Fe），with its stable chemical properties，broad light-responsive range，and unique breathing effect，holds significant potential for photocatalytic water splitting.However，MIL-88A（Fe） exhibits weak reduction ability at the conduction band.Sensitization with photosensitive substances could enhance its visible light utilization and modulate the conduction band potential，thereby improving its reduction capability.The results showed that when 10 mg of MIL-88A（Fe） was used，and the amounts of eosin Y（EY） and erythrosine B（ErB） were 10 mg each，the hydrogen evolution rates reached 16.93 mmol/（g·h） and 12.41 mmol/（g·h），respectively.Compared to using MIL-88A（Fe） alone，the hydrogen evolution rates was increased by 268.7 and 197.0 times，respectively.This improvement was attributed to EY and ErB shifting the conduction band potential of MIL-88A（Fe） from -0.06 V（vs.NHE） to -0.61 V（vs.NHE） and -0.76 V（vs.NHE），respectively，significantly enhancing its reduction ability.Under alkaline conditions，the photocatalytic hydrogen production performance of the EY-MIL-88A（Fe） system was far superior to that under acidic or neutral conditions，with the highest 2-hour hydrogen evolution reaching 67.3 mmol/g.Additionally，the EY-MIL-88A（Fe） system exhibited good reusability，maintaining a hydrogen evolution rate of 20.5 mmol/g after five cycles.The apparent quantum efficiency of the EY-MIL-88A（Fe） system reached 22.3% at a wavelength of 500 nm.In conclusion，under EY sensitization，MIL-88A（Fe） demonstrated efficient visible-light photocatalytic hydrogen evolution and holds promising potential for practical applications.
Key words： photocatalysis; water splitting for hydrogen; sensitization; MIL-88A（Fe）
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