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Graphitic carbon nitride-based photocatalysts in the applications of environmental catalysis

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Journal of Environmental Sciences 2023年第2期124卷 570-590页

作者： hongxia lin JinmoWu Fan Zhou Xiaolong Zhao Pengfei Lu Guanghui Sun Yuhan Song Yayun Li Xiaoyong Liu Hongxing Dai Hefei Institute for Public Safety Research Tsinghua UniversityHefei 230601China Anhui Province Key Laboratory of Human Safety Hefei 230601China Beijing Key Laboratory for Green Catalysis and Separation Key Laboratory of Beijing on Regional Air Pollution ControlKey Laboratory of Advanced Functional MaterialsEducation Ministry of ChinaLaboratory of Catalysis Chemistry and NanoscienceDepartment of Environmental Chemical EngineeringSchool of Environmental and Chemical EngineeringFaculty of Environment and Life ScienceBeijing University of TechnologyBeijing 100124China

Semiconductor photocatalytic technology has shown great prospects in converting solar energy into chemical energy to mitigate energy crisis and solve environmental pollution *** key issue is the development of high-efficiency *** strategies in the state-of-the-art advancements,such as heterostructure construction,heteroatom doping,metal/single atom loading,and defect engineering,have been presented for the graphitic carbon nitride(g-C3N4)-based nanocomposite catalysts to design their surface chemical environments and internal electronic structures to make them more suitable for different photocatalytic *** this review,nanoarchitecture design,synthesis methods,photochemical properties,potential photocatalytic applications,and related reaction mechanisms of the modified high-efficiency carbon nitride-based photocatalysts were briefly *** superior photocatalytic performance was identified to be associated with the enhanced visible-light response,fast photoinduced electron-hole separation,efficient charge migration,and increased unsaturated active ***,the further advance of the visible-light harvesting and solar-to-energy conversions are proposed.

关键词： Graphitic carbon nitride-based photocatalyst Photocatalytic reduction Photocatalytic degradation Chemical modification Heterostructure construction Metal doping

Western Indian Ocean SST signal and anomalous Antarctic sea-ice concentration variation

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Acta Oceanologica Sinica 2011年第2期30卷 9-13页

作者： LIU Na ZHANG Zhanhai CHEN hongxia lin lina First Institute of Oceanography State Oceanic Administration Qingdao 266061 China Key Laboratory for Polar Science Polar Research Institute of China Shanghai 200136 ChinaReceived 13 June 2010 accepted 2 December 2010

Teleconnection between El Nino/La Nina-Southern Oscillation （ENSO） phenomenon and anomalous Antarctic sea-ice variation has been studied *** this study,impacts of sea surface temperature in the Indian Ocean on Antarctic sea-ice change were investigated during Janaury 1979 and October *** on previous research results,sea areas in the western Indian Ocean （WIO;50°–70°E,10 °–20 °S） are selected for the *** variables showed 1-10 year interannual timescales by Fast Founer Tranaform （FFT） *** show that i） strong WIO signals emerged in the anomalous changes of Antarctic sea-ice concentration;ii） significant positive correlations occurred around the Antarctic Peninsula,Ross Sea and its northwest peripheral sea region iii） negative correlation occurred in the Indian Ocean section of the Southern Ocean,Amundsen Seas,and the sea area over northern Ross Sea;and iv） the atmospheric anomalies associated with the WIO including wind,meridional heat flux,and surface air temperature over southern high latitudes were the possible factors for the teleconnection.

关键词： Antarctic sea-ice western Indian Ocean sea surface temperature

Au-Pd/mesoporous Fe_2O_3:Highly active photocatalysts for the visible-light-driven degradation of acetone

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Journal of Environmental Sciences 2018年第8期30卷 74-86页

作者： hongxia lin Yuxi Liu Jiguang Deng Kunfeng Zhang Xing Zhang Shaohua Xie Xingtian Zhao Jun Yang Zhuo Han Hongxing Dai Beijing Key Laboratory for Green Catalysis and Separation Key Laboratory of Beijing on Regional Air Pollution Control Laboratory of Catalysis Chemistry and Nanoscience Department of Chemistry and Chemical Engineering College of Environmental and Energy Engineering Beijing University of Technology

Three-dimensionally ordered mesoporous Fe2O3（meso-Fe2O3） and its supported Au, Pd,and Au-Pd alloy（xA uP dy/meso-Fe2O3; x = 0.08–0.72 wt.%; Pd/Au molar ratio（y） = 1.48–1.85）photocatalysts have been prepared via the KIT-6-templating and polyvinyl alcohol-protected reduction routes, respectively. Physical properties of the samples were characterized, and their photocatalytic activities were evaluated for the photocatalytic oxidation of acetone in the presence of a small amount of H2O2 under visible-light illumination. It was found that the meso-Fe2O3 was rhombohedral in crystal structure. The as-obtained samples displayed a high surface area of 111.0–140.8 m^2/g and a bandgap energy of 1.98–2.12 eV. The Au, Pd and/or Au–Pd alloy nanoparticles（NPs） with a size of 3–4 nm were uniformly dispersed on the surface of the meso-Fe2O3 support. The 0.72 wt.% AuP d1.48/meso-Fe2O3 sample performed the best in the presence of 0.06 mol/L H2O2 aqueous solution, showing a 100% acetone conversion within4 hr of visible-light illumination. It was concluded that the good performance of 0.72 wt.%AuPd（1.48）/meso-Fe2O3 for photocatalytic acetone oxidation was associated with its ordered mesoporous structure, high adsorbed oxygen species concentration, plasmonic resonance effect between AuPd（1.48） NPs and meso-Fe2O3, and effective separation of the photogenerated charge carriers. In addition, the introduction of H2O2 and the involvement of the photo-Fenton process also played important roles in enhancing the photocatalytic activity of 0.72 wt.%AuPd（1.48）/meso-Fe2O3.

关键词： Three-dimensionally ordered mesoporous Fe2O3 Gold–palladium alloy Supported noble metal photocatalyst Photocatalytic oxidation Acetone degradation

GLOBAL REGULARITY OF 2D INCOMPRESSIBLE MAGNETO-MICROPOLAR FLUID EQUATIONS WITH PARTIAL VISCOSITY

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Acta Mathematica Scientia 2023年第3期43卷 1275-1300页

作者：林红霞刘森张恒白茹 Geomathematics Key Laboratory of Sichuan Province College of Mathematics and PhysicsChengdu University of TechnologyChengdu610059China

This paper studies the global regularity of 2D incompressible anisotropic magnetomicropolar fluid equations with partial viscosity. Ma [22](Ma L. Nonlinear Anal: Real World Appl, 2018, 40: 95–129) examined the global regularity of the 2D incompressible magnetomicropolar fluid system for 21 anisotropic partial viscosity cases. He proved the global existence of a classical solution for some cases and established the conditional global regularity for some other cases. In this paper, we also investigate the global regularity of 12 cases in [22]and some other new partial viscosity cases. The global regularity is established by providing new regular conditions. Our work improves some results in [22] in this sense of weaker regular criteria.

关键词： magneto-micropolar fluid equations partial dissipation global regularity regular criteria

管道中三维不可压缩Navier-Stokes方程组解的正则性准则

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应用数学学报 2016年第4期39卷 523-530页

作者：林红霞李珊成都理工大学信息与计算科学系成都610059 四川大学商学院成都610064

本文研究了三维无限长管道中的不可压缩的Navier-Stokes方程组,根据u=(u_1,u_2,u_3)的导数建立了解的整体正则性判据.

关键词：正则性准则三维Navier-Stokes方程组强解

关于抛物-抛物Keller-Segel类模型的全局解和渐近性

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数学物理学报（A辑） 2019年第5期39卷 1102-1114页

作者：吴杰林红霞电子科技大学数学科学学院成都611731 成都理工大学数学地质四川省重点实验室成都610059

该文考虑了抛物-抛物型Keller-Segel型模型,通过Neumann热半群获得了关于ρ依赖于χ的梯度不等式,同时得到了||ρ(·,t)||L1(Ω),||(·,t)||L∞(Ω)关于时间t的收敛性.它揭示了精子的质量将收敛到初始精卵细胞的差,卵子全部受精,化学物... 详细信息

该文考虑了抛物-抛物型Keller-Segel型模型,通过Neumann热半群获得了关于ρ依赖于χ的梯度不等式,同时得到了||ρ(·,t)||L1(Ω),||(·,t)||L∞(Ω)关于时间t的收敛性.它揭示了精子的质量将收敛到初始精卵细胞的差,卵子全部受精,化学物质的浓度最终耗尽.同时化学物质的耗尽也伴随着卵细胞全部受精.它表明了化学物质的浓度在珊瑚礁受精过程中起着非常重要的作用.

关键词：趋化流体 Keller-Segel 珊瑚礁全局存在性渐近行为

以学习活动为中心的中学信息技术课程教学案例研究

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现代教育技术 2006年第4期16卷 27-30页

作者：林红霞章伟民华东师范大学上海200062

以学习活动为中心的教学设计模式是教学设计的新发展,在中小学的各门课程教学中得到了普遍应用。信息技术课是一门操作性、实用性很强的课程,开展活动教学尤为重要。该文首先提出开展学习活动的普适的教学设计方案,然后针对一堂中学信... 详细信息

以学习活动为中心的教学设计模式是教学设计的新发展,在中小学的各门课程教学中得到了普遍应用。信息技术课是一门操作性、实用性很强的课程,开展活动教学尤为重要。该文首先提出开展学习活动的普适的教学设计方案,然后针对一堂中学信息技术课的活动教学进行具体教学设计,最后给出该教学案例实施后的反馈与分析。

关键词：学习活动教学设计中学信息技术课教学案例

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例析思想品德课时政教学的问题及对策

基础教育研究 2009年第7期 48-48,50页

作者：林红霞衡州市实验学校浙江衡州324000

初中思想品德课程具有时代性，我们的思想品德教师必须注意引导学生关注时事，培养学生时政素养，实现时政知识与教材内容的和谐统一。然而在具体的教学实践中，我们发现了一些不容忽视的问题，例如：

关键词：思想品德课程教学实践课时例析引导学生和谐统一教材内容初中

恶性血液病病人行自体外周血干细胞移植的护理

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全科护理 2012年第10期10卷 877-878页

作者：林红霞南京医科大学第一附属医院

[目的]总结恶性血液病病人行自体外周血干细胞移植的护理。[方法]对10例恶性血液病病人行自体外周血干细胞移植,同时加强心理支持、造血干细胞回输的护理、营养支持、并发症的观察与护理。[结果]10例自体外周血干细胞移植全部成功,病人... 详细信息

[目的]总结恶性血液病病人行自体外周血干细胞移植的护理。[方法]对10例恶性血液病病人行自体外周血干细胞移植,同时加强心理支持、造血干细胞回输的护理、营养支持、并发症的观察与护理。[结果]10例自体外周血干细胞移植全部成功,病人移植期间均发生程度不同的口腔溃疡及胃肠道反应,发热8例,消化道出血2例,药物性肝损伤1例;1例多发性骨髓瘤病人移植6个月后复发。[结论]加强恶性血液病病人行自体外周血干细胞移植的护理,是移植成功的保证。

关键词：恶性血液病自体外周血干细胞移植护理