Plasmon-enhanced hierarchical photoelectrodes with mechanical flexibility for hydrogen generation from urea solution and human urine
Plasmon-enhanced hierarchical photoelectrodes with mechanical flexibility for hydrogen generation from urea solution and human urine
复制标题
DOI：
10.1007/s10800-019-01369-0
复制
发表时间：
2019-11-06
影响因子：
2.9
通讯作者：
Zheng, Yuebing
中科院分区：
文献类型：
--
作者：
Gan, Jiayong;Rajeeva, Bharath Bangalore;Zheng, Yuebing
我们已经证明了等离子体增强的灵活和分层的光电阳极从人尿中的光电化学电池的氢生产。光阳极由用Au纳米颗粒和Ni（OH）（2）功能化的钴掺杂的α-Fe 2 O3纳米棒阵列组成。Au纳米颗粒和Ni（OH）（2）分别用作等离子体纳米结构和尿素氧化催化剂。受益于等离子体效应和催化效应，光阳极在0.3 V（相对于Ag/AgCl）下表现出5.00.1 mA cm（-2）（尿素溶液）和7.5 +/- 0.1 mA cm（-2）（人尿液）的AM 1.5光电流。在Pt对电极处，在小偏压下实现了连续的氢气析出。凭借其高性能和机械灵活性，促进了大规模运输和现场实施，光阳极正在为氢气生产和尿液处理铺平可持续的道路。
We have demonstrated plasmon-enhanced flexible and hierarchical photoanodes for hydrogen production from human urine in a photoelectrochemical cell. The photoanodes consist of cobalt-doped alpha-Fe2O3 nanorod arrays functionalized with Au nanoparticles and Ni(OH)(2). The Au nanoparticles and Ni(OH)(2) work as plasmonic nanostructures and urea oxidation catalyst, respectively. Benefiting from the plasmonic and catalytic effects, the photoanodes exhibit an AM 1.5 photocurrent of 5.00.1 mA cm(-2) (urea solution) and 7.5 +/- 0.1 mA cm(-2) (human urine) at 0.3 V versus Ag/AgCl. At a Pt counter electrode, continuous hydrogen gas evolution is achieved at a small bias. With their high performance and mechanical flexibility that facilitates the large-scale transportation and implementation in the field, the photoanodes are paving a sustainable way towards hydrogen production and urine treatment.