NiO_(x)/BiVO_(4)/C/Cu_(2)O纳米线光阴极的制备及其在污泥制氢系统中的应用  

Fabrication of NiO_(x)/BiVO_(4)/C/Cu_(2)O nanowires photocathode and its application in sludge hydrogen production system

作　　者：刘鹏 张梦雪 李鸿江 马媛 吴祖召 顾莹莹 LIU Peng;ZHANG Mengxue;LI Hongjiang;MA Yuan;WU Zuzhao;GU Yingying(College of Science,China University of Petroleum(East China),Qingdao Shandong 266580;Shandong Zongheng Dezhi Environmental Consulting Co.,Ltd.,Jinan Shandong 250100;Department of Science and Technology,Qingdao Engineering Vocational College,Qingdao Shandong 266100;South China Sea Marine Survey and Technology Center,SOA,Guangzhou Guangdong 510300;College of Chemical Engineering,China University of Petroleum(East China),Qingdao Shandong 266580)

机构地区：[1]中国石油大学(华东)理学院,山东青岛266580 [2]山东纵横德智环境咨询有限公司,山东济南250100 [3]青岛工程职业学院科技处,山东青岛266100 [4]国家海洋局南海调查技术中心,广东广州510300 [5]中国石油大学(华东)化工学院,山东青岛266580

出　　处：《环境污染与防治》2022年第11期1444-1450,共7页Environmental Pollution & Control

基　　金：国家自然科学基金资助项目(No.41201303);山东省自然科学基金资助项目(No.ZR2017QEE016);中央高校基本科研业务费专项资金资助项目(No.20CX02409A);国际清洁能源拔尖创新人才培养项目(No.201904100030);山东省油气储运安全重点实验室开放基金资助项目。

摘　　要：微生物光电化学池(BPEC)系统是一种将生物阳极与光阴极耦合,利用太阳能和生物能进行产氢的新型绿色技术。以较廉价的Cu_(2)O纳米线为基底,通过C层与稳定的BiVO_(4)构建异质结,添加助催化剂合成NiO_(x)/BiVO_(4)/C/Cu_(2)O纳米线光阴极;以剩余污泥为底物,构建了BPEC系统及微生物燃料电池(MFC)与BPEC耦合(MFC-BPEC)系统,研究其污泥减量及产氢效果。结果表明,制备的NiO_(x)/BiVO_(4)/C/Cu_(2)O纳米线光阴极在-0.8 V(vs Ag/AgCl)偏压下达到了-5.20 mA/cm^(2)的光电流密度。构建的BPEC系统和MFC-BPEC系统可利用污泥中的化学需氧量(COD)、悬浮物(SS)、蛋白质及多糖为底物产氢,与BPEC系统相比,串联两个MFC的MFC-BPEC(DMFC-BPEC)系统可以显著提高污泥降解速率和氢气产率(分别为377.75 mg/(L·h)和15.50 mg/g)。研究为利用太阳能驱动的微生物电化学系统实现污泥减量化与资源化提供了理论依据。The bio-photo-electro-chemical(BPEC)system is a new green technology that couples a biological anode with a photocathode to produce hydrogen using solar energy and bioenergy.In this paper,NiO_(x)/BiVO_(4)/C/Cu_(2)O nanowires(NWs)photocathode were synthesized by adding NiO_(x) co-catalyst to the heterojunctions constructed by cheaper Cu_(2)O NWs substrate and stable BiVO_(4) through a C layer.A BPEC system and microbial fuel cell(MFC)and BPEC coupling(MFC-BPEC)system were constructed using the residual sludge as the substrate.The sludge reduction and hydrogen production performance were studied.The results showed that a photocurrent of-5.20 mA/cm^(2)was achieved under a bias voltage of-0.8 V(vs Ag/AgCl)for the NiO_(x)/BiVO_(4)/C/Cu_(2)O NWs composite photocathode.The constructed BPEC and MFC-BPEC systems could produce hydrogen using COD,SS,proteins and polysaccharides in sludge.Compared with BPEC system,the DMFC-BPEC system combining with two MFC s could significantly improve the sludge degradation rate and hydrogen yield(377.75 mg/(L·h)and 15.50 mg/g,respectively).This research provides a theoretical basis for the use of solar-driven microbial electrochemical systems to achieve sludge reduction and resource utilization.

关 键 词：MFC-BPEC系统 NiO_(x)/BiVO_(4)/C/Cu_(2)O纳米线光阴极 生物阳极 污泥 

分 类 号：TQ116.2[化学工程—无机化工] O646.541[理学—物理化学] X703[理学—化学]