A fast, simple, and energy-saving microwave-assisted approach was successfully developed to prepare carbon microspheres. The carbon microspheres with a uniform particle size and good dispersity were prepared using glucose as the raw material and HCl as the dehydrating agent at low temperature (90°C) in an open system with the assistance of microwave heating. The carbon microspheres were characterized by elemental analysis, XRD, SEM, FTIR, TG, and Raman. The results showed that the carbon microspheres prepared under the condition of 18.5% (v/v) HCl and heating for 30 min by microwave had a narrow size distribution. The core–shell structure of the carbon core and TiO 2 shell was prepared with (NH 4 ) 2 TiF 6 , H 3 BO 3 using the microwave-assisted method. The hollow TiO 2 microspheres with good crystallinity and high photocatalytic properties were successfully prepared by sacrificing the carbon microspheres.

中文翻译：

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低温微波加热制备碳纳米管和空心TiO2微球及其应用

成功开发了一种快速，简单且节能的微波辅助方法来制备碳微球。在低温（90°C）下，在微波加热的辅助下，以葡萄糖为原料，以盐酸为脱水剂，制备了粒径均匀，分散性好的碳微球。通过元素分析，XRD，SEM，FTIR，TG和Raman对碳微球进行了表征。结果表明，在18.5％（v / v）HCl的条件下制备的碳微球，微波加热30分钟，其粒径分布较窄。采用微波辅助法用（NH 4）2 TiF 6，H 3 BO 3制备了碳核和TiO 2壳的核-壳结构。