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首页> 外文期刊>RSC Advances >Nanoporous photocatalysts developed through heat-driven stacking of graphitic carbon nitride nanosheets
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Nanoporous photocatalysts developed through heat-driven stacking of graphitic carbon nitride nanosheets

机译：通过热驱动石墨氮化碳纳米片堆叠而开发的纳米多孔光催化剂

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Nanoporous graphitic carbon nitride was prepared through direct heat treatment of guanidinium cyanurate at 550-600 degrees C in an air atmosphere. The BET surface area of the resulting materials can reach 200 m(2) g(-1). High porosity was developed through a heat-driven stacking of g-C3N4 nanosheets. The mechanism was revealed in detail through TEM and N-2 adsorption measurements. Large-size g-C3N4 nanosheets are formed at 550 degrees C and stacked in a state similar to randomly creased paper slips. Further increase of treatment temperature to 600 degrees C results in curling and fragmentation of g-C3N4 nanosheets, which build up a highly porous matrix. Nanoporous graphitic carbon nitride with higher surface area exhibits better optical properties and has enhanced photocatalytic activity. The nanoporous g-C3N4 shows high photocatalytic activity for the decomposition of rhodamine (RhB) in an aqueous solution.
机译：通过在空气气氛中在550-600℃下对氰尿酸胍进行直接热处理来制备纳米多孔石墨氮化碳。所得材料的BET表面积可达到200 m（2）g（-1）。高孔隙率是通过热驱动堆叠g-C3N4纳米片而形成的。通过TEM和N-2吸附测量详细揭示了该机理。大尺寸g-C3N4纳米片在550摄氏度下形成，并以类似于随机折痕的纸浆状的状态堆叠。将处理温度进一步提高到600摄氏度会导致g-C3N4纳米片卷曲和破碎，从而形成高度多孔的基质。具有较高表面积的纳米多孔石墨氮化碳表现出更好的光学性质并具有增强的光催化活性。纳米多孔g-C3N4在水溶液中对罗丹明（RhB）的分解显示出高光催化活性。

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