CAJ | 학술논문

文章通过水热法先合成了碲纳米管,再以碲纳米管为前驱体通过溶剂热法,在乙二胺四乙酸二钠和强碱 KOH 的作用下,与氯化铋反应生成了具有异质结的碲化铋片式管,并发现若在合适的氢氧化钾浓度以及骤冷停止反应的条件下,碲化铋片式管可以断裂成单独的环状碲化铋纳米片以及较短的片式管.所得的碲化铋片式管与微米级碲化铋粉末混合后进行 SPS 烧结制备成块体,其热导率与经 SPS 烧结的微米级碲化铋粉末相比下降了约12%.
문장통과수열법선합성료제납미관,재이제납미관위전구체통과용제열법,재을이알사을산이납화강감 KOH 적작용하,여록화필반응생성료구유이질결적제화필편식관,병발현약재합괄적경양화갑농도이급취랭정지반응적조건하,제화필편식관가이단렬성단독적배상제화필납미편이급교단적편식관.소득적제화필편식관여미미급제화필분말혼합후진행 SPS 소결제비성괴체,기열도솔여경 SPS 소결적미미급제화필분말상비하강료약12%.
In the paper, the unique Bi2Te3 sheet-tubes were prepared by a simple solvothermal reaction in the presence of disodium EDTA and KOH, using Te nanotubes as the precursor obtained by hydrothermal method. Under conditions of suitable alkali concentration and rapid cooling to stop reaction, the Bi2Te3 sheet-tubes can be broken into separated ring nanosheets and shorter sheet-tubes. The bulk material was prepared by SPS sintering with micron Bi2Te3 powder mixing Bi2Te3 sheet-tubes. By adding the unique Bi2Te3 sheet-tubes, the thermal conductivity of the micron Bi2Te3 powder was reduced by about 12 %.