The disadvantage of bismuth vanadate (BiVO₄), a metal oxide semiconductor photocatalytic material, can be overcome by constructing nitrogen-doped graphene-based nanocomposites. Here we state to synthesis pyridinic-N doped graphene/BiVO₄ nanocomposite (N-rGO/BiVO₄). Because of many defects were existed pyridinic N-rGO, more tiny particle size and interaction from abundant interfacial, between BiVO₄ and N-rGO sheets, can produce synergistic effects and enhance photocatalytic performance. N-rGO/BiVO₄ composite has a large light absorption range and high photocatalytic activity compared with BiVO₄ and rGO/BiVO₄. XPS, PXRD, HRTEM, FESEM, UV–vis, PL. etc analytical methods are used to characterize samples and the change of bandgap of samples is verified through theoretical analysis and simulation. After photocatalytic testing, the decomposition of methylene blue dye just required only 80 min under visible light and photocatalytic degradation efficiency of 99.3%. N-rGO/BiVO₄ has great potential for the removal of refractory pollutants from wastewater.

金属氧化物半导体光催化材料钒酸铋（BiVO ₄）的缺点可以通过构建氮掺杂的石墨烯基纳米复合材料来克服。在这里，我们声明要合成吡啶-N掺杂的石墨烯/ BiVO ₄纳米复合材料（N-rGO / BiVO ₄）。由于存在吡啶吡啶N-rGO的许多缺陷，BiVO ₄和N-rGO薄片之间存在更小的微粒尺寸和丰富的界面相互作用，可以产生协同效应并增强光催化性能。与BiVO ₄和rGO / BiVO ₄相比，N-rGO / BiVO ₄复合材料具有较大的光吸收范围和较高的光催化活性。。XPS，PXRD，HRTEM，FESEM，UV-vis，PL。等分析方法用于表征样品，并通过理论分析和仿真验证了样品的带隙变化。经过光催化测试，在可见光下，亚甲基蓝染料的分解仅需80分钟，光催化降解效率为99.3％。N-rGO / BiVO ₄具有从废水中去除难处理污染物的巨大潜力。