Hadia N M A, Abdelazeez Ahmed Adel A, Alzaid Meshal, Shaban Mohamed, Mohamed S H, Hoex Bram, Hajjiah Ali, Rabia Mohamed
Physics Department, College of Science, Jouf University, Sakaka P.O. Box 2014, Saudi Arabia.
Basic Sciences Research Unit, Jouf University, Sakaka P.O. Box 2014, Saudi Arabia.
Materials (Basel). 2022 Feb 16;15(4):1489. doi: 10.3390/ma15041489.
This work reports on H fuel generation from sewage water using Cu/CuO nanoporous (NP) electrodes. This is a novel concept for converting contaminated water into H fuel. The preparation of Cu/CuO NP was achieved using a simple thermal combustion process of Cu metallic foil at 550 °C for 1 h. The Cu/CuO surface consists of island-like structures, with an inter-distance of 100 nm. Each island has a highly porous surface with a pore diameter of about 250 nm. X-ray diffraction (XRD) confirmed the formation of monoclinic Cu/CuO NP material with a crystallite size of 89 nm. The prepared Cu/CuO photoelectrode was applied for H generation from sewage water achieving an incident to photon conversion efficiency (IPCE) of 14.6%. Further, the effects of light intensity and wavelength on the photoelectrode performance were assessed. The current density (J) value increased from 2.17 to 4.7 mA·cm upon raising the light power density from 50 to 100 mW·cm. Moreover, the enthalpy (ΔH*) and entropy (ΔS*) values of Cu/CuO electrode were determined as 9.519 KJ mol and 180.4 JK·mol, respectively. The results obtained in the present study are very promising for solving the problem of energy in far regions by converting sewage water to H fuel.
这项工作报道了使用铜/氧化铜纳米多孔（NP）电极从污水中产生氢燃料。这是一个将受污染水转化为氢燃料的新概念。铜/氧化铜NP的制备是通过在550℃下对铜金属箔进行1小时的简单热燃烧过程实现的。铜/氧化铜表面由岛状结构组成，间距为100纳米。每个岛都有一个高度多孔的表面，孔径约为250纳米。X射线衍射（XRD）证实形成了微晶尺寸为89纳米的单斜晶铜/氧化铜NP材料。制备的铜/氧化铜光电极用于从污水中产生氢气，实现了14.6%的入射光子转换效率（IPCE）。此外，评估了光强度和波长对光电极性能的影响。当光功率密度从50提高到100毫瓦/平方厘米时，电流密度（J）值从2.17增加到4.7毫安/平方厘米。此外，铜/氧化铜电极的焓（ΔH*）和熵（ΔS*）值分别确定为9.519千焦/摩尔和180.4焦/摩尔·开尔文。本研究获得的结果对于通过将污水转化为氢燃料来解决偏远地区的能源问题非常有前景。
