摘要
新奇没有金属的 photocatalyst-sulfur/graphene (S/GR ) compositehas 使用一个灵巧的一个壶综合，二拍子的圆舞有 thiosulfate 的热水的方法和 graphene 氧化物(去) 作为先锋。绿 reductantL 维生素 acidwas 过去常转变在温和条件下面去 GR。光催化剂粉末被 Fourier 变换描绘红外线的光谱学， X 光检查衍射，传播电子显微镜学，扫描电子显微镜学，和精力散光谱学。试验性的测试被不同催化剂在甲基橘子(瞬间) 的 photocatalytic 分解上进行。把同样准备的 S/GR 比作纯 -S, 为在紫外、太阳的光下面的瞬间的降级的合成显示出的很提高的 photocatalytic 活动。GR 的存在极大地也增加了 hydrophilicity 和催化剂材料的吸附能力。结果显示有 -S 的 GR 的加入为提供更有效的环境应用的基于 S 的光催化剂导致 synergistic 效果。
A novel metal-free photocatalyst--sulfur/graphene （S/GR） composite--has been synthesized using a facile one-pot, two-step hydrothermal method with thiosulfate and graphene oxide （GO） as precursors. A green reductant--L-ascorbic add--was used to transform GO to GR under mild conditions. The photocatalyst powders were characterized by Fourier transform infrared spectroscop, X-ray diffraction, transmission electron microscopy, scanning electron microscopy, and energy dispersive spectroscopy. Experimental tests were conducted on the photocatalytic decomposition of methyl orange （MO） by different catalysts. Compared to pure oL-S, the as-prepared S/GR composite showed much enhanced photocatalytic activity for the degradation of MO under both UV and solar light. The presence of GR also greatly increased the hydrophilicity and adsorption capacity of the catalyst material. The results indicate that the incorporation of GR with a-S results in a synergistic effect for the S-based photocatalysts offering more effective environmental applications.
