In this study, we reported the biological approach to synthesis of ZnO nanorod (NR) on the reduced graphene oxide (RGO) for photocatalytic, antibacterial activity and hydrogen production under sunlight. Bacillus subtilis played a vital role in the production of biogenic ammonia from synthetic urine and utilized for the synthesis of ZnONR on the RGO sheet. The morphological study revealed that RGO sheets displayed a tremendous role in anchoring ZnONR. XRD patterns showed the ZnO crystal phase on the RGO sheets. XPS and Raman spectra confirmed that the bio-hydrothermal method as suitable for GO converted into RGO. The transient photocurrent and I/V measurement are exhibited as an increment on the RGO-ZnONR compared to ZnONR. The RGO-ZnONR composites showed excellent performance with decolorization of MB and textile dyes and efficient control of the E. coli and S. aureus. RGO-ZnONR exhibited remarkable noted as a higher photocatalytic hydrogen evolution rate (940 μmol/h/g_cat) than the ZnONR (369.5 μmol/h/g _cat). As a result of photocatalytic performance to correlate with sunlight intensity was extensively studied. RGO plays an essential role in interface electron transfer from sunlight to ZnONR for enhancing •OH radical formation to cleavage of dye color substance and eradicated bacterial cells.

在这项研究中，我们报道了在还原的氧化石墨烯（RGO）上合成ZnO纳米棒（NR）的生物学方法，用于在阳光下进行光催化，抗菌活性和制氢。枯草芽孢杆菌在合成尿液生产生物氨中起着至关重要的作用，并用于在RGO纸上合成ZnONR。形态学研究表明，RGO片在锚定ZnONR中显示出巨大作用。XRD图谱显示RGO板上的ZnO晶相。XPS和拉曼光谱证实，适用于GO的生物水热法转化为RGO。与ZnONR相比，RGO-ZnONR上的瞬态光电流和I / V测量值显示为增量。RGO-ZnONR复合材料在MB和纺织染料脱色以及对大肠杆菌和金黄色葡萄球菌的有效控制方面表现出优异的性能。RGO-ZnONR以较高的光催化氢释放速率（940μmol/ h / g _cat）高于ZnONR（369.5μmol/ h / g _cat）。由于光催化性能与日照强度有关，因此进行了广泛的研究。RGO在从日光到ZnONR的界面电子转移中起重要作用，以增强•OH自由基的形成，以裂解染料和消灭细菌细胞。