Synergistic effect of surface phase junction and surface defects on enhancing the photocatalytic performance of BiPO 4

Micro & nano letters

article

Xianyong Feng¹  Peifang Wang¹  Jin Qian¹  Yanhui Ao¹  Chao Wang¹  Jun Hou¹ 

[1] Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes, Ministry of Education, College of Environment, Hohai University

关键词: bismuth compounds;    wide band gap semiconductors;    photochemistry;    catalysts;    catalysis;    ball milling;    surface structure;    photoconductivity;    BiPO4;    surface phase junction;    surface defects;    photocatalytic performance;    facile ball-milling;    phase composition;    monazite monoclinic;    ultraviolet light irradiation;    separation efficiency;    photogenerated charges;    transfer efficiency;   

DOI  :  10.1049/mnl.2017.0620

学科分类：计算机科学（综合）

来源: Wiley

【 摘 要 】

Paroxysmal hemicrania (PH) is classified as a subgroup of trigeminal autonomic headaches among primary headaches. The pain is unilateral, located frequently at the orbital, supraorbital and/or temporal regions. It is sharp, severe, and these headaches tend to occur at least 5 times a day, which last for 2 – 30 minutes, accompanied by autonomic findings such as conjunctival injection, lacrimation, nasal congestion, nasal discharge, ptosis and orbital edema. Secondary PH is associated with tumor or vascular pathologies. Most frequently hypophyseal tumors were detected. In our case, there was a mucocele originating from the left ethmoidal sinus and compressing on the medial rectus muscle in the cranial MR examination of a patient admitted with clinical features of PH. In this case, it was seen that neuroimaging is mandatory in patients with TOB, in order to exclude secondary causes. Also, nociceptive impulses originating from surrounding tissues with the compression effect of the mucocele induce trigeminal autonomic reflex, supporting the hypothesis that autonomic symptoms and pain occur with hypothalamic and trigeminal connections.

【 授权许可】

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