当前位置: X-MOL 学术CrystEngComm › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Crystallization and architecture engineering of ZnWO4 for enhanced photoluminescence
CrystEngComm ( IF 2.6 ) Pub Date : 2020-08-20 , DOI: 10.1039/d0ce00828a
Meiting Li 1, 2, 3, 4, 5 , Xuejiao Wang 5, 6, 7, 8 , Qi Zhu 1, 2, 3, 4, 5 , Ji-Guang Li 9, 10, 11, 12 , Byung-Nam Kim 9, 10, 11, 12
Affiliation  

Oxalic acid (H2C2O4) and (NH4)2SO4 were originally examined as crystallization and architecture directing reagents for the hydrothermal synthesis of ZnWO4, with the pivotal roles of the C2O42−/Zn2+ (R) and SO42−/Zn2+ (R′) molar ratios and hydrothermal temperature/duration investigated in detail. It was clearly demonstrated that C2O42− remarkably altered the reaction pathway and suppressed the intrinsic 1D growth of ZnWO4, eventually leading to 2D crystallites with exposed ab planes. (NH4)2SO4 further promoted 2D growth and self-assembly of the ZnWO4 crystallites, leading to flower-like architectures of up to ∼2.5 μm sized large microplates. Photoluminescence properties were thoroughly analyzed and discussed for the representative ZnWO4 and (Zn0.98Eu0.02)WO4 products after 700 °C calcination to show the importance of crystallite/architecture engineering.

中文翻译:

ZnWO4的结晶和结构工程以增强光致发光

草酸(H 2 C 2 O 4)和(NH 42 SO 4最初是作为水热合成ZnWO 4的结晶和体系结构指导试剂,其主要作用是C 2 O 4 2- / Zn 2详细研究了+R)和SO 4 2- / Zn 2+R ')的摩尔比和水热温度/持续时间。清楚地表明,C 2 O 4 2−显着改变了反应途径并抑制了ZnWO 4的固有1D生长,最终导致ab平面暴露的2D微晶。(NH 42 SO 4进一步促进了ZnWO 4晶体的2D生长和自组装,从而导致了高达约2.5μm大小的大微板的花状结构。在700°C煅烧后,对代表性的ZnWO 4和(Zn 0.98 Eu 0.02)WO 4产物的光致发光性质进行了彻底的分析和讨论,以显示微晶/建筑工程学的重要性。
更新日期:2020-10-05
down
wechat
bug