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Chinese Chemical Letters 2021年第11期32卷 3431-3434页

作者： Jinli Qiu cailiang yue Wenting Zheng Fuqiang Liu Junjie Zhu School of the Environment&School of Chemistry and Chemical Engineering Nanjing UniversityNanjing 210023China

A facile approach was successfully employed to prepare Fe_(2)O_(3)/Co_(3)O_(4)nanosheet arrays on nickel foams(Fe_(2)O_(3)/Co_(3)O_(4)@NF),which owned such advantages as narrow band gap energies and high separation rate of photoexcited electron-hole *** combination of Fe_(2)O_(3)and Co_(3)O_(4)dramatically enhanced the photocatalytic activity towards sulfamethoxazole(SMZ)degradation,with the highest catalytic efficiency of k=0.0538 min^(−1),which was much higher than that of Fe_(2)O_(3)@NF(0.0098 min^(−1))and Co_(3)O_(4)@NF(0.0094 min^(−1)).The introduction of Ni foam could not only act as the support to anchor photocatalyst,but also work as the electron mediator to promote the transition of electron-hole *** species trapping experiments combined with electron paramagnetic resonance analysis confirmed^(·)O^(-)_(2)−was primarily responsible for SMZ ***,Fe_(2)O_(3)/Co_(3)O_(4)@NF was effective and almost unaffected by inorganic cations and anions in aqueous *** study could provide a facile and promising path for the construction of self-supported metal oxide-based heterojunction with high efficiency and strong stability.

关键词： Photocatalysis Sulfamethoxazole Ni foam Fe_(2)O_(3) CO_(3)O_(4)

Ultralow-Energy-Barrier H_(2)O_(2)Dissociation on Coordinatively Unsaturated Metal Centers in Binary Ce-Fe Prussian Blue Analogue for Efficient and Stable Photo-Fenton Catalysis

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Energy & Environmental Materials 2023年第6期6卷 427-435页

作者： Wenting Zheng Hui Guo Changqing Zhu cailiang yue Wenlei Zhu Fuqiang Liu Zhaoxu Chen State Key Laboratory of Pollution Control and Resource Reuse School of the EnvironmentNanjing UniversityNanjing 210023China Institute of Theoretical and Computational Chemistry Key Laboratory of Mesoscopic Chemistry of MOESchool of Chemistry and Chemical EngineeringNanjing UniversityNanjing 210023China

The low intrinsic activity of Fenton catalytic site and high demand for light-energy input inhibit the organic-pollution control efficiency of photo-Fenton ***,through structural design with density functional theory(DFT)calculations,Ce is predicted to enable the construction of coordinatively unsaturated metal centers(CUCs)in Prussian blue analogue(PBA),which can strongly adsorb H_(2)O_(2)and donate sufficient electrons for directly splitting the O-O bond to *** a substitution-co-assembly strategy,binary Ce-Fe PBA is then prepared,which rapidly degrades sulfamethoxazole with the pseudo-first-order kinetic rate constant exceeding reported values by 1-2 orders of ***,the photogenerated electrons reduce Fe(Ⅲ)and Ce(Ⅳ)to promote the metal valence cycle in CUCs and make sulfamethoxazole degradation efficiency only lose 6.04%in 5 ***,by introducing rare earth metals into transition metal-organic frameworks,this work guides the whole process for highly active CUCs from design and construction to mechanism exploration with DFT calculations,enabling ultrafast and stable photo-Fenton catalysis.

关键词： Ce substitution coordinatively unsaturated metal centers photo-Fenton Prussian blue analogue

A direct Z-scheme 0Dα-Fe_(2)O_(3)/TiO_(2)heterojunction for enhanced photo-Fenton activity with low H_(2)O_(2)consumption

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Chinese Chemical Letters 2024年第12期35卷 334-339页

作者： cailiang yue Nan Sun Yixing Qiu Linlin Zhu Zhiling Du Fuqiang Liu State Key Laboratory of Pollution and Resource Reuse School of the EnvironmentNanjing UniversityNanjing 210023China

The insufficient F(Ⅲ)/Fe(Ⅱ)cycling rate resulted from high combination of photogenerated carriers severely hinders the photo-Fenton *** this work,0 dimensionalα-Fe_(2)O_(3)nanoclusters decorated Ti O_(2)heterojunction(FT-x)was prepared via in-situ phase transformation ***-200 exhibited the optimal photo-Fenton activity for 2,4-dichlorophenol degradation with the kinetic rate constant reaching1.0806 min^(-1)under low H_(2)O_(2)dosage(1 mmol/L),which was 126.1 and 202.8 times higher than that of Ti O_(2)andα-Fe_(2)O_(3).Radical quenching experiments and electron spin resonance spectra proved that·OH was the leading reactive *** enhanced photo-Fenton activity was attributed to the accelerated F(III)/Fe(II)cycling rate induced by the direct Z-Scheme charge transfer *** from the abundant·OH production,the dechlorinate ratios and mineralization ratios of multiple chlorophenol pollutants(2,4-dichlorophenol,4-chlorophenol,2,4,6-trichlorophenol)all exceeded 98%.The biotoxicity of chlorophenol wastewater was greatly reduced after the treatment by Light/H_(2)O_(2)/FT-200 ***,this work constructed a low-cost and highly efficient photo-Fenton system for refractory organic wastewater treatment.

关键词： Photo-Fenton Z-scheme heterojunction Chlorophenol α-Fe_(2)O_(3) TiO_(2)

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新型Z型异质结增强光芬顿降解水中氯酚

环境工程学报 2023年第6期17卷 1799-1809页

作者：邱易行岳彩良朱琳琳刘福强南京大学环境学院南京210023

增强光生载流子分离和Fe(Ⅲ)/Fe(Ⅱ)循环是增强光芬顿催化剂性能的关键。本研究采用低温煅烧法制备系列新型Z型异质结Fe_(2)O_(3)-TiO_(2)-x,利用X射线衍射、扫描电子显微镜和透射电子显微镜等表征方法证实Fe_(2)O_(3)纳米簇成功结合在T... 详细信息

增强光生载流子分离和Fe(Ⅲ)/Fe(Ⅱ)循环是增强光芬顿催化剂性能的关键。本研究采用低温煅烧法制备系列新型Z型异质结Fe_(2)O_(3)-TiO_(2)-x,利用X射线衍射、扫描电子显微镜和透射电子显微镜等表征方法证实Fe_(2)O_(3)纳米簇成功结合在TiO_(2)表面。以2,4-二氯苯酚(2,4-DCP)为模型污染物评估系列催化剂的光芬顿性能,发现UV-Vis/H_(2)O_(2)/Fe_(2)O_(3)-TiO_(2)-200体系最佳,可在12 min内实现完全降解。而且光照30 min后,2,4-DCP的矿化率可达91.5%、脱氯率可达100%。采用液质联用仪分析2,4-DCP的降解路径,主要经过脱氯和开环等过程,并发现其降解中间产物的毒性有效降低。深入分析新型Z型异质结增强光芬顿的机制,主要源自于内建电场驱动载流子分离、加速Fe(Ⅲ)/Fe(Ⅱ)循环。此外,UV-Vis/H_(2)O_(2)/Fe_(2)O_(3)-TiO_(2)-200体系适用于酸性和中性、有机酸和高浓度阴离子共存的复杂水体,可高效、深度降解水中氯酚类污染物,具有良好的应用潜力。

关键词：光芬顿催化异质结氯酚

中医治疗轻度认知障碍的静息态功能磁共振成像研究进展

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磁共振成像 2022年第3期13卷 122-125页

作者：李晓陵崔璇佟欣曹丹娜彭彩亮赵佩范婷婷娄睿智吴越黑龙江中医药大学附属第一医院CT磁共振科哈尔滨150040 黑龙江中医药大学研究生院哈尔滨150040

中医治疗认知障碍已经取得了一定成果,但其疗效机制仍不明确。功能磁共振成像(functional magnetic resonance imaging,fMRI)是目前脑影像领域较常用的一种非损伤性活体脑功能检测技术,其中静息态功能磁共振成像(resting-state fMRI,rs-... 详细信息

中医治疗认知障碍已经取得了一定成果,但其疗效机制仍不明确。功能磁共振成像(functional magnetic resonance imaging,fMRI)是目前脑影像领域较常用的一种非损伤性活体脑功能检测技术,其中静息态功能磁共振成像(resting-state fMRI,rs-fMRI)是目前研究认知类疾病的首选方法。基于该技术发现与轻度认知障碍(mild cognitive impairment,MCI)相关的主要脑区为额叶、海马和扣带回。研究表明,中医治疗可以调控MCI患者的脑功能网络及神经环路。rs-fMRI技术可客观地评价治疗前后受试者脑区功能连通性和局部脑区活动指标,了解中医治疗脑效应机制,为探讨神经系统疾病的中医疗效提供新思路和新方法。

关键词：轻度认知障碍静息态功能磁共振成像针刺导引功法中医