Two-step hydrothermal preparation of poor crystalline MoS 2 and its enhanced performance for dibenzothiophene hydrodesulphurisation

Micro & nano letters

article

He Huang¹  Na Liu¹  Jian Wei¹  Xueying Wang¹  Qinglong Luo¹  Xueli Huang¹  Xuefeng Wang¹  Mei Zhong¹ 

[1] Key Laboratory of Cleaner Transition of Coal & Chemical Engineering, College of Chemistry and Chemical Engineering, Xinjiang University

关键词: X-ray photoelectron spectra;    transmission electron microscopy;    molybdenum compounds;    X-ray diffraction;    mesoporous materials;    nanofabrication;    organic compounds;    ageing;    hydrothermal preparation;    analytical methods;    field emission scanning electron microscopy;    transmission electron microscopy;    hydrothermal method;    dibenzothiophene hydrodesulphurisation;    aging;    X-ray diffraction;    XRD;    Brunauer–Emmett–Teller;    X-ray photoelectron spectroscopy;    XPS;    mesoporous materials;    bent nanosheets;    DBT conversion;    time 12.0 hour;    MoS2;   

DOI  :  10.1049/mnl.2020.0234

学科分类：计算机科学（综合）

来源: Wiley

【 摘 要 】

Poor crystalline MoS 2 was synthesised by a novel two-step hydrothermal method, including aging and hydrothermal stages. The structures were characterised by different analytical methods such as X-ray diffraction (XRD), Brunauer–Emmett–Teller, field emission scanning electron microscopy, transmission electron microscopy and X-ray photoelectron spectroscopy (XPS). The synthesised products were typical mesoporous materials with a high specific surface area (273 m 2 /g). XRD and XPS displayed that the products were poor crystalline MoS 2 mixed with metal Mo and Mo 4+ /(Mo + Mo 4+ ) was 72.6%. The electron microscopy results showed that the products were uniform bent nanosheets with150 nm diameter and 3–5 layers. Furthermore, the product displayed excellent hydrodesulphurisation performance of dibenzothiophene (DBT) and the DBT conversion reached 87.3%. Compared with the one-step hydrothermal method, the two-step one was able to shorten the reaction time by 12 h, create more active sites and affect crystalline, composition, specific surface area and morphology of products.

【 授权许可】

CC BY|CC BY-ND|CC BY-NC|CC BY-NC-ND