Low Pr-doped Bi 2 O 3 photocatalyst with long-wavelength response: mechanisms by first-principles calculation

Micro & nano letters

article

Guoying Wang¹  Xuefu Chen¹  Lan Li¹  Gaofeng Shi¹ 

[1] College of Petrochemical Technology, Lanzhou University of Technology

关键词: bismuth compounds;    semiconductor materials;    praseodymium;    semiconductor doping;    photochemistry;    catalysis;    catalysts;    ultraviolet spectra;    visible spectra;    ab initio calculations;    energy gap;    polymerisation;    dyes;    semiconductor growth;    nanoparticles;    nanofabrication;    ultraviolet radiation effects;    praseodymium-doped bismuth oxide photocatalyst;    long-wavelength response;    first principles calculation;    acrylamide polymerisation;    photocatalytic activity;    methyl orange degradation;    visible light irradiation;    α-bismuth oxide nanoparticles;    optical absorption range;    long-wavelength response;    electron structure;    energy level hybridisation;    indirect band gap semiconductors;    wavelength 436 nm to 518 nm;    Bi2O3Pr;   

DOI  :  10.1049/mnl.2017.0849

学科分类：计算机科学（综合）

来源: Wiley

【 摘 要 】

The objective of this study was to compare clinical, laboratorial, maternal and perinatal results between HELLP Syndrome and severe Preeclampsia. An observational study comparing women with HELLP Syndrome (n=71) to women with severe preeclampsia (n=253) was done. The authors analyzed the early course of the pathologies and the outcomes in both groups. HELLP syndrome occurred in 28% of all the cases and was more frequent at gestational age before 32 weeks (n=39 – 55%) than severe preeclampsia (n=108 - 42%), with more newborns weighting less than 1500g (27 – 38.6% vs 65 – 25.6%; p=0.036). Thrombocytopenia below 100 000/µL (aOR, 2.14; 95% CI, 1.49 – 3.06) and LDH>1 000 UI/L (aOR: 5.17; 95% CI 2.19 – 12.16) were risk factors for HELLP. Maternal morbidity (eclampsia, abruptio placentae, and acute renal failure) was similar in both cohorts; eight stillbirths (6 in severe preeclampsia and 2 in HELLP Syndrome) occurred. There were no maternal deaths. In conclusion, in this study the authors confirmed that HELLP Syndrome is a severe form of preeclampsia with an earlier presentation in pregnancy, worst laboratorial findings and more prematurity rates.

【 授权许可】

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