A manganese (IV) oxide (MnO₂)–manganese (IV) sulfide (MnS₂)/poly-2-amino-1-mercaptobenzene (P2AMB) nanocomposite is prepared through a polymerization reaction (oxidation) and is utilized as a highly photo-electrocatalytic material for green hydrogen generation from sewage water. The manganese (IV) oxide–manganese (IV) sulfide/P2AMB nanocomposite demonstrates remarkable optical properties, characterized by a band gap of 1.81 eV. To promote the water-splitting reaction by the synthesized manganese (IV) oxide–manganese (IV) sulfide/P2AMB nanocomposite photoelectrode, sewage water is utilized as a sacrificial agent to facilitate effectively the generation of hydrogen gas through the evaluation of the current (J _ph). At −0.9 V, the J _ph and J _o values are determined to be −0.33 and −0.2 mA/cm², respectively. Notably, an optimum J _ph value of −0.26 mA/cm² is observed for incident photons at 340 nm, indicating that light with higher frequency and energy leads to the generation of more electrons from the manganese (IV) oxide–manganese (IV) sulfide/P2AMB nanocomposite and subsequent hydrogen production. Conversely, the lowest J _ph value of −0.21 mA/cm² is obtained at 730 nm, suggesting the influence of infrared waves on the photoelectrode due to the small band gap (1.86 eV) of the materials, as calculated in a previous analysis. This study represents an initial step toward the conversion of wastewater into hydrogen gas, which can serve as a sustainable fuel source for various industrial applications.

中文翻译：

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用于绿色氢产生的氧化锰（IV）/硫化锰（IV）/聚-2-氨基-1-巯基苯

通过聚合反应（氧化）制备了氧化锰（IV）（MnO ₂）-硫化锰（IV）（MnS ₂）/聚-2-氨基-1-巯基苯（P2AMB）纳米复合材料，并用作高光敏材料-用于从污水中产生绿色氢的电催化材料。氧化锰 (IV)-硫化锰 (IV)/P2AMB 纳米复合材料表现出卓越的光学性能，其带隙为 1.81 eV。为了促进合成的氧化锰（IV）-硫化锰（IV）/P2AMB纳米复合光电极的水分解反应，利用污水作为牺牲剂，通过评估电流（J _酸碱度）。在-0.9V时，J _ph和J _o值分别确定为-0.33和-0.2 mA/cm ²。值得注意的是，对于 340 nm 的入射光子观察到最佳J _ph值为 -0.26 mA/cm ² ，这表明具有更高频率和能量的光会导致从锰 (IV) 氧化物-锰 (IV) 产生更多电子硫化物/P2AMB纳米复合材料和随后的氢气生产。相反，在730 nm处获得-0.21 mA/cm ²的最低J _ph值，这表明红外波对光电极的影响是由于材料的带隙小（1.86 eV），如之前的分析计算的。这项研究代表了将废水转化为氢气的第一步，氢气可以作为各种工业应用的可持续燃料来源。