At present energy and environmental remediation are of highest priority for the well defined sustainability. Multifunctional materials that solve both the issues are on high demand. In the present work, a simple method has been followed to extract carbon spheres fromTamarindus indica(commonly known astamarind fruit) shelland doped with nitrogen (N-CS). Vanadium pentoxide nanoflakes were decorated aroundN-CS and the resultant is labeled as V₂O₅/N-CS nanocomposite. The spectroscopic, microscopic, elemental mapping and x-ray photoelectron spectroscopic characterization confirm the nitrogen doping and formation of hybrid material. N-CS, V₂O₅, and V₂O₅/N-CS nanocompositehave been evaluated for their efficiency to evolve hydrogen and for degradation of Bisphenol A (BPA) under visible light. In addition, electrocatalytic hydrogen evolution in presence of light has also been evaluated. The DRS spectrum proves the decrease in the bandgap of V₂O₅ upon its decoration around N-CS material. In a photochemical experiment, the V₂O₅/N-CS nanocomposite evolved 18,600 μmolg⁻¹ of H_2.Electrochemical hydrogen evolution has also been evaluated in presence of light and obtained the onset potential of −60mV with 52 mV dec⁻¹ Tafel slope value. Scavenger studies indicate superoxide radicals and hydroxyl radicals are the active species responsible for the degradation of BPA. BPA degradation pathway has been predicted with the support of LC-MS results of the intermediates. All these results indicate the synthesized nanocomposite could be an efficient, stable multifunctional material for photocatalytic applications.

目前，能源和环境修复是明确定义的可持续性的重中之重。解决这两个问题的多功能材料需求量很大。在目前的工作中，采用一种简单的方法从掺氮 (N-CS) 的罗望子（俗称罗望子果实）壳中提取碳球。五氧化二钒纳米薄片被装饰在N-CS周围，所得物被标记为V ₂ O ₅ /N-CS纳米复合材料。光谱、显微、元素映射和 X 射线光电子光谱表征证实了氮掺杂和混合材料的形成。N-CS、V ₂ O ₅和 V ₂ O ₅已经评估了 /N-CS 纳米复合材料的析氢效率和在可见光下降解双酚 A (BPA) 的效率。此外，还评估了光存在下的电催化析氢。DRS 光谱证明了 V ₂ O ₅在其围绕 N-CS 材料装饰时的带隙减小。在光化学实验中，V ₂ O ₅ /N-CS 纳米复合材料释放出 18,600 μmolg ^-1的 H _2。还评估了在光存在下的电化学析氢，并在 52 mV dec ^-1下获得了 -60mV 的起始电位塔菲尔斜率值。清除剂研究表明，超氧自由基和羟基自由基是导致 BPA 降解的活性物质。BPA 降解途径已在中间体的 LC-MS 结果支持下进行了预测。所有这些结果表明合成的纳米复合材料可能是一种用于光催化应用的高效、稳定的多功能材料。