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首页> 外文期刊>ACS Sustainable Chemistry & Engineering >Green, Noncorrosive, Easy Scale-Up Hydrothermal-Thermal Conversion: A Feasible Solution to Mass Production of Magnesium Borate Nanowhiskers
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Green, Noncorrosive, Easy Scale-Up Hydrothermal-Thermal Conversion: A Feasible Solution to Mass Production of Magnesium Borate Nanowhiskers

机译：绿色，无腐蚀，易于按比例放大的水热-热转化：批量生产硼酸镁纳米晶须的可行解决方案

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摘要

Wet chemistry-based techniques, including widely used hydrothermal and solvothermal synthesis, have emerged as thriving strategies for nanostructure bulk synthesis, which in reality encountered the ubiquitous challenge of corrosion problems during scale-up or further commercialization. In this contribution, as an endeavor, uniform and porefree Mg2B2O5 nanowhiskers with a length of 120-3000 nm, a diameter of 40-160 nm, and an aspect ratio of 2-34 were successfully synthesized via a novel, green, noncorrosive, easy scale-up hydrothermal-thermal conversion route. Specifically, the NaCl byproduct of the room-temperature coprecipitation system was preseparated by filtration, and then the cake was transferred for hydrothermal conversion to avoid the corrosion of Cl-, giving rise to uniform MgBO2(OH) nanowhiskers. The MgBO2(OH) nanowhiskers were calcined for high crystallinity Mg2B2O5 nanowhiskers, assisted by NP-9 and preseparated byproduct NaCl. The present novel hydrothermal synthetic route to MgBO2(OH) nanowhiskers was carried out at 200 °C (40 °C lower than previous work), definitely indicating green characteristics, such as energy savings, reduction and reuse of byproduct, noncorrosiveness to hydrothermal apparatus, and easy scale-up. The as-developed strategy provided a feasible and operable solution to the bottleneck of the hydrothermal scale-up of MgBO2(OH)/Mg2B2O5 nanowhiskers. Not only was this enlightening for mass production of other nanostructures, especially for the chlorate-participated system in academia and industry, but this also could contribute to sustainable development of our society.
机译：湿化学为基础的技术，包括广泛使用的水热和溶剂热合成，已经成为纳米结构体合成的蓬勃发展策略，实际上，这种技术在规模放大或进一步商业化过程中遇到了普遍存在的腐蚀问题。在这一贡献中，作为努力，通过新颖，绿色，无腐蚀，易操作的方法成功地合成了长度为120-3000 nm，直径为40-160 nm，长径比为2-34的均匀且无孔的Mg2B2O5纳米晶须。放大水热热转化路线。具体而言，通过过滤将室温共沉淀体系的NaCl副产物预分离，然后将滤饼进行水热转化以避免Cl-的腐蚀，从而产生均匀的MgBO2（OH）纳米晶须。 MgBO2（OH）纳米晶须在NP-9的协助下煅烧以得到高结晶度的Mg2B2O5纳米晶须，并预分离了副产物NaCl。目前，这种新型的MgBO2（OH）纳米晶须水热合成路线是在200°C（比以前的工作温度低40°C）下进行的，明确表明了绿色特性，例如节能，减少和重复利用副产物，对水热设备无腐蚀，并且易于扩展。所开发的策略为MgBO2（OH）/ Mg2B2O5纳米晶须水热放大的瓶颈提供了可行且可行的解决方案。这不仅对其他纳米结构的大规模生产具有启发性，特别是对学术界和工业界的氯酸盐参与体系具有启发性，而且还可以为我们社会的可持续发展做出贡献。

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