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露雨殘陽(yáng)金蟲(chóng) (初入文壇)
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[求助]
制備mpg-C3N4的問(wèn)題 已有4人參與
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我采用如下方法,制備g-C3N4,經(jīng)過(guò)焙燒后,得到的是白色固體,可文獻(xiàn)上說(shuō)得到的是黃色固體,怎么回事? 5 g of cyanamide and 12.5 g of Ludox-HSO4 silica dispersion are mixed together until complete dissolution of cyanamide. The mixture is heated in an oil bath at 100 oC upon stirring for ca .3h until removal of water and formation of a white solid. The powder is then grounded in a mortar, transferred into a crucible and heated under air at 2.3 oC min-1 (4h) up to 550 oC and then treated at 550 oC for 4h. The as-obtained yellow powder is grounded in a mortar and then treated under stirring during 2 days in a NH4HF2 4 mol L-1 solution. |

新蟲(chóng) (小有名氣)
新蟲(chóng) (正式寫手)

金蟲(chóng) (初入文壇)

新蟲(chóng) (正式寫手)

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