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[求助]
不同直径介孔碳小球
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急需 ！！有哪位大神在做，能请教一下么  赵东元院士课题组的 单分散高氮介孔碳纳米小球 不同直径的我这边重复的 没有做出小球来是怎么回事，是跟着如下这篇文献做的 Monodisperse Ultrahigh Nitrogen-Containing Mesoporous Carbon Nanospheres from Melamine-Formaldehyde Resin DingYi Guo ,ZhaoDongYuan The mesoporous MF polymer nanospheres were synthesized through a facile aqueous emulsion polymerization self-assembly process. Typically, 0.6 g of Pluronic F127 was dissolved in 10 mL of deionized water. Then 0.6 g of TMB was added and vigorously stirred for 6 h (denoted as solutionA). 3.0 mmol of melamine, 3.0 mmol of formaldehyde aqueous solution (37 wt%), and 0.05 mL of 0.1 m NaOH aqueous solution were added to 40 mL of deionized water and stirred at 100 °C for 0.5 h for the formation of soluble prepolymerized MF resin solution (denoted as solution B).Subsequently, the solution A was added into the above solution B and stirred for another 2 h to allow the formation of the stabilized TMB/F127 emulsion droplets. Afterward, appropriate amount of HCl aqueous solution, with a mole ratio of HCl to melamine in the range of 0.27–0.53, was added and continuously stirred over 6 h. Finally, the solution turned to bright milky white. The obtained mesoporous MF polymer nanospheres were collected by centrifugation and then washed with deionized water and absolute ethanol at least three times, respectively. After drying in an oven at 60 °C overnight, the white power was preheated at 350 °C for 3 h and finally calcined at 800 °C for 2 h in nitrogen atmosphere with a heating rate of 1 °C min−1to obtain the resultant ultrahigh nitrogen-containing mesoporous carbon nanospheres (N-MCSs). The products were denoted as MF-x and N-MCSs-x (where x represents the particle size in nanometers), respectively. 问题1：HCl是浓盐酸吗 里边没有表明所用浓度 问题2：当A溶液：F127溶液 +TMB 加入B溶液：三聚氰胺+甲醛（37%）+NaOH（0.1M） 是需要多少温度进行反应呢 我看其他文献一般是F127溶液加入后用的66或是70摄氏度 问题3：转速没有具体表明 ，只说是剧烈搅拌，我这边看文献有的说是500rpm 不知道有没有问题 问题4：有说表面活性剂是要针管慢慢注射的，我是直接一次性加入搅拌的 |
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2楼2022-05-11 16:28:46
