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182篇 您的检索式:作者名="Quan Fang"
    题名 作者 年代 出处 被引量
1Effect of hepatitis C virus infection on expression of several cancer-associated gene products in hepatocellular carcinoma显示文摘NTRODUCTIONOurpreviousstudiesbyseroepidemiological,molecularepidemiologicalandimmunopathologicalmethodshaverevealedthathepa...YANG Jian Min, WANG Rong Quan, BU Bao Guo, ZHOU Zi Cheng, FANG Dian Chun and LUO Yuan Hui 1999World Journal of Gastroenterology1999,5,1:42
25-Hydroxymethylcytosine signatures in circulating cell-free DNA as diagnostic biomarkers for human cancers显示文摘象 5-methylcytosine (5mC ) 和 5-hydroxymethylcytosine (5hmC ) 那样的 DNA 修正是知道在哺乳动物影响全球基因表示的 epigenetic 标记。在人的染色体,与基因表示的靠近的关联和高化学的稳定性给他们的流行,这些 DNA epigenetic 标记能为癌症用作理想的 biomarkers 诊断。利用一种高度敏感、选择的化学标记技术,我们这里报导在传播没有房间的 DNA ( cfDNA )并且在从最近与 colorectal 诊断的 260 个病人的一个队收集的配对的肿瘤和邻近的纸巾的 genomic DNA ( gDNA )的 5hmC 的染色体宽的介绍,胃,胰腺,从 90 个健康个人的肝或甲状腺癌症和正常纸巾。5hmC 主要在与开的染色质和容许的 histone 修正重合的 transcriptionally 活跃的区域被散布。柔韧的联系癌症的 5hmC 签名在 cfDNA 被识别为特定的癌症类型是特征的。传播 cfDNA 的 5hmC 底 biomarkers colorectal 和胃的癌症是高度预兆的并且比常规 biomarkers 优异并且比得上从织物活体检视的 5hmC biomarkers。因此,这新策略能从血样品的分析为癌症的诊断和预后导致有效、最低限度地侵略的方法的发展。Wenshuai Li Xu Zhang Xingyu Lu Lei You Yanqun Song Zhongguang Luo Jun Zhang Ji Nie Wanwei Zheng Diannan Xu Yaping Wang Yuanqiang Dong Shulin Yu Jun Hong Jianping Shi Hankun Hao Fen Luo Luchun Hua Peng Wang Xiaoping Qian Fang Yuan Lianhuan Wei Ming Cui Taiping Zhang Quan Liao Menghua Dai Ziwen Liu Ge Chen Katherine Meckel Sarbani Adhikari Guifang Jia Marc B Bissonnette Xinxiang Zhang Yupei Zhao Wei Zhang Chuan He Jie Liu 2017Cell Research2017,27,10:30
3Transduction of Fas gene or Bcl-2 antisense RNA sensitizes cultured drug resistant gastric cancer cells to chemotherapeutic drugs显示文摘INTRODUCTIONChemotherapyisoneofthemajormethodsintumortreatment,butitoftendoesnotworkduetomultidrugresistance(MDR).Recentstudi...XIAO Bing, SHI Yong Quan, ZHAO Yan Qiu, YOU Han, WANG Zuo You, LIU Xian Ling, YIN Fang, QIAO Tai Dong and FAN Dai Ming 1998World Journal of Gastroenterology1998,4,5:24
4Diffusion tensor imaging detects Wallerian degeneration of the corticospinal tract early after cerebral infarction显示文摘To investigate the feasibility and time window of early detection of Wallerian degeneration in the corticospinal tract after middle cerebral artery infarction,23 patients were assessed using magnetic resonance diffusion tensor imaging at 3.0T within 14 days after the infarction.The fractional anisotropy values of the affected corticospinal tract began to decrease at 3 days after onset and decreased in all cases at 7 days.The diffusion coefficient remained unchanged.Experimental findings indicate that diffusion tensor imaging can detect the changes associated with Wallerian degeneration of the corticospinal tract as early as 3 days after cerebral infarction.Ruiman Xie Min Fang Linjiang Zhou Shanghua Fan Jianying Liu Hongbo Quan Man Luo Dongying Qiu 2012Neural Regeneration Research2012,7,12:20
5Joint Radar and Communication: A Survey显示文摘Joint radar and communication(JRC)technology has become important for civil and military applications for decades.This paper introduces the concepts,characteristics and advantages of JRC technology,presenting the typical applications that have benefited from JRC technology currently and in the future.This paper explores the state-of-the-art of JRC in the levels of coexistence,cooperation,co-design and collaboration.Compared to previous surveys,this paper reviews the entire trends that drive the development of radar sensing and wireless communication using JRC.Specifically,we explore an open research issue on radar and communication operating with mutual benefits based on collaboration,which represents the fourth stage of JRC evolution.This paper provides useful perspectives for future researches of JRC technology.Zhiyong Feng Zixi Fang Zhiqing Wei Xu Chen Zhi Quan Danna Ji 2020China Communications2020,17,1:19
6Long-term effects of drug-eluting stents versus bare metal stents on patients with acute ST-elevation myocardial infarction undergoing primary percutaneous coronary intervention: outcomes of 3-year clinical follow-up显示文摘WANG Chong-hui FANG Quan ZHANG Shu-yang SHEN Zhu-jun FAN Zhong-jie J1N Xiao-feng ZENG Yong LIU Zhen-yu XIE Hong-zhi YANG Ming 2012Chinese Medical Journal2012,,16:14
7Hemodynamic parameters obtained by transthoracic echocardiography and right heart catheterization: a comparative study in patients with pulmonary hypertension显示文摘背景血液动力学的评估为有肺的 hypertention 的病人的管理是关键的。临床医生们经常比较喜欢一个快速、非侵略的方法。这研究试图与肺的 hypertension.Methods A 在病人为血液动力学的参数的大小检验 transthoracic echocardiography 的可行性未来的单个中心的学习在 42 个病人之中被进行,肺的高血压由不同疾病引起了。Transthoracic echocardiography 和正确心的 catheterization 在 24 个小时以内被执行。收缩、心脏舒张、吝啬的压力(PASP, PADP 和 PAMP ) ,心脏的产量(公司) ,和肺的毛状的楔迫使的肺的动脉(PCWP ) 被两个方法测量。线性关联和 Bland-Altman 分析被执行比较好关联在侵略、非侵略的大小之间被发现为的二组血液动力学的 parameters.Results PASP (r=0.96 ) , PADP (r=0.85 ) , PAMP (r=0.88 ) ,公司(r=0.82 ) ,和 PCWP (r=0.81 ) 。Bland-Altman 方法做的进一步的协议分析证明当大差异为 PAMP 和 PCWP.Conclusions 存在时,为 PASP, PADP,和公司的那偏爱和 95% 信心间隔是临床上可接受的由在有肺的高血压的病人的 PASP, PADP,和公司的非侵略的大小与侵略决心相关很好。Transthoracic echocardiography (TTE ) 为估计 PCWP 和 PAMP 是不恰当的。TIAN Zhuang LIU Yong-tai FANG Quan NI Chao CHEN Tai-bo FANG Li-gang GAO Peng JIANG Xiu-chun LI Meng-tao ZENG Xiao-feng 2011Chinese Medical Journal2011,,12:11
8Effect of High Suspension and Low Incision Surgery Based on Traditional Ligation of Chinese Medicine in Treatment of Mixed Haemorrhoids:A Multi-centre,Randomized,Single-Blind,Non-inferiority Clinical Trial显示文摘Objective:To observe the clinical effect of high suspension and low incision(HSLI)surgery on mixed haemorrhoids,compared with Milligan-Morgan haemorrhoidectomy.Methods:A multi-centre,randomized,singleblind,non-inferiority clinical trial was performed.Participants with mixed haemorrhoids from Xiyuan Hospital of China Academy of Chinese Medical Sciences,Beijing Rectum Hospital,Air Force Medical Center of People's Liberation Army of China,and Puyang Hospital of Traditional Chinese Medicine were enrolled from September 2016 to March 2018.By using a blocked randomization scheme,participants were assigned to two groups.The experimental group was treated with HSLI,while the control group was treated with Milligan-Morgan haemorrhoidectomy.The primary outcome was the clinical effect evaluated at 12 weeks after operation.The secondary outcomes included the number of haemorrhoids treated during the operation,pain scores,use of analgesics,postoperative oedema,wound healing,incidence of anal stenosis,anorectal manometry after operation,as well as surgical duration,length of stay and total hospitalization expenses.A safety evaluation was also conducted.Results:In total,246 eligible participants were enrolled,with 123 cases in each group.There was no significant difference in the clinical effect between the two groups(100.00% vs.99.19%,P>0.05).Compared with the control group,the number of external haemorrhoids treated during the operation and the pain scores after operation were significantly reduced in the experimental group(P<0.05 or P<0.01);the patient number with wound healing at 2 weeks after operation and the functional length of anal canal at 12 weeks after operation were significantly increased in the experimental group(P<0.05).There was no significant difference in the incidence of anal stenosis,the numbers of patients using analgesics and patients with postoperative oedema between the two groups after operation(P>0.05).The surgical duration and length of stay in the experimental group were significantly longer than those in the control group,and the total hospitalization expense was significantly higher than that in the control group(all P<0.05).No adverse events were reported in either group during the whole trial or follow-up period.Conclusion:HSLI had the advantages of preserving the skin of anal canal completely,alleviating postsurgical pain and promoting rapid recovery after operation.(Registration No.Chi CTR1900022883).JIA Xiao-qiang CAO Wei-wei QUAN Long-fang ZHAO Wei-bing CHENG Fang JIA Shan FENG Liu-quan WEI Xu-feng XIE Zhen-nian WANG Dong XU Chun-yan CUI Chun-hui CAI Xing-juan HE Lan-ye WANG Zhan-jun TIAN Ying SHI Shu-min SUN Si-miao SU Liang ZHAI Meng-fan 2021Chinese Journal of Integrative Medicine2021,27,9:11
9Chronic toxicity and cytotoxicity of synthetic pyrethroid insecticide cis-bifenthrin显示文摘With the increasing use of synthetic pyrethroids (SPs), the significance of ecological safety and health risk is an emerging concern. In this study, we evaluated the chronic aquatic toxicity of cis-bifenthrin (cis-BF) in Daphnia magna and its cytotoxicity in Chinese hamster ovary (CHO) cells as well as human cervical carcinoma (Hela) cells. Chronic aquatic toxicity tests showed that cis-BF could significantly affect the reproduction of D. magna. The lowest observed effective concentration and the non-observed effective concentration of cis-BF to D. magna were 0.02 and 0.01 μg/L, respectively, and the chronic value was 0.014 μg/L. The intrinsic rate of natural increase was significantly decreased (p < 0.05) to 0.02 μg/L. The cytotoxicity assay demonstrated that cis-BF decreased cell viability in CHO and Hela cells in a concentration- and time-dependent manner. The IC50 values for Hela and CHO cells were 4.0 × 10-5and 3.2 × 10-5 mol/L, respectively. Together, these results indicated that cis-BF induced chronic toxicity in both aquatic invertebrate animals and mammalian cells. These findings assist in understanding the impact of SPs on health and environmental safety. Considering the wide spectrum of SPs, a more comprehensive understanding of the negative effects is indispensible for planning future application and regulation of these pesticides.WANG Cui CHEN Fang ZHANG Quan FANG Zhuo 2009Journal of Environmental Sciences2009,21,12:10
10Effect of land use and land cover change on soil erosion and the spatio-temporal variation in Liupan Mountain Region,southern Ningxia,China显示文摘The Liupan Mountains are located in the southern Ningxia Hui Autonomous Region of China,that forms an important divide between landforms and biogeographic regions.The populated part of the Liupan Mountain Region has suffered tremendous ecological damage over time due to population pressure,excessive demand and inappropriate use of agricultural land resources.To present the relationship between land use/cover change and spatio-temporal variation of soil erosion,data sets of land use between the late 1980s and 2000 were obtained from Landsat Thematic Mapper(TM)imagery,and spatial models were used to characterize landscape and soil erosion conditions.Also,soil erosion in response to land use and land cover change were quantified and analyzed using data from geographical information systems and remote sensing.Soil erosion by water was the dominant mode of soil loss,while soil erosion by wind was only present on a relatively small area.The degree of soil erosion was classified into five severity classes:slight,light,moderate,severe,and very severe.Soil erosion in the Liupan Mountain Region increased between the late 1980s and 2000,both in terms of acreage and severity.Moderate,severe,and very severe eroded areas accounted for 54.86%of the total land area.The lightly eroded area decreased,while the moderately eroded area increased by 368817 ha(22%)followed by severe erosion with 146552 ha(8.8%),and very severe erosion by 97067.6 ha(5.8%).Soil loss on sloping cropland increased with slope gradients.About 90%of the cropland was located on slopes less than 15°.Most of the increase in soil erosion on cropland was due to conversion of steep slopes to cropland and degradation of grassland and increased activities.Soil erosion was severe on grassland with a moderate or low grass cover and on dry land.Human activities,cultivation on steep slopes,and overgrazing of pastures were the main reasons for the increase in erosion severity.Bin QUAN MJMRÖMKENS Rui LI Fang WANG Jie CHEN 2011Frontiers of Environmental Science & Engineering2011,5,4:8
11Effects of dietary supplementation with essential oils and protease on growth performance,antioxidation,inflammation and intestinal function of weaned pigs显示文摘This experiment evaluated the impacts of essential oils(EO)and protease(PRO),independently or in combination,on growth performance,antioxidation,inflammation and intestinal function of weaned pigs.One hundred and sixty weaned pigs(21 d of age,BW of 6.74±0.20 kg)were randomly divided into 4 treatments with 8 replicate pens of 5 pigs per pen.Dietary treatments included the following:1)control diet(CON),2)CON with 300 mg/kg essential oils(EO),3)CON with 500 mg/kg protease(PRO),4)CON with 300 mg/kg essential oil and 500 mg/kg protease(EO + PRO).On d 8,one pig from each penwas selected for sampling.The remaining pigs were fed for an additional week and growth performance was monitored during this period.Dietary treatments had no marked effects(P>0.05)on the growth performance of pigs.However,pigs receiving EO diet had higher(P<0.05)serumglutathione peroxidase(GSH-Px)activity,and tended to decrease(P=0.063)serum concentration of tumor necrosis factor-a(TNF-a).In addition,pigs receiving EO diet had higher(P<0.05)abundances of phylum Actinobacteria,and genera Bifidobacterium,and lower(P<0.05)phylum Bacteroidetes and genera Alloprevotella in colonic digesta.Pigs receiving PRO diet decreased(P<0.05)the serum concentration of malondialdehyde(MDA)and diamine oxidase activity,increased(P<0.05)the villus height and the ratio of villus height to crypt depth in duodenum,increased sucrase activity in jejunal mucosa,and also increased the abundance of phylum Actinobacteria in colonic digesta.Furthermore,the synergistic effects of EO and PROwas observed(P<0.05)for pigs with decreasing serum TNF-a concentration and increasing serum GSH-Px activity.Collectively,the results indicated that dietary supplementation of EO and PRO had no significant effects on growth performance of weaned pigs.EO diet appeared to improve antioxidant activity and intestinal microbiota,while PRO diet improved intestinal morphology and digestive enzyme activity,and there was a synergistic effect of EO and PRO on reducing inflammatory parameters in weaned pigs.Xie Peng Qiang Zhou Cheng Wu Jian Zhao Quan Tan Ying He Liang Hu Zhengfeng Fang Yan Lin Shengyu Xu Bin Feng Jian Li Yong Zhuo Chris Van Ginneken Xuemei Jiang De Wu Lianqiang Che 2022Animal Nutrition2022,,2:8
12Epigallocatechin gallate inhibits angiotensin II- induced endothelial barrier dysfunction via inhibition of the p38 MAPK/HSP27 pathway显示文摘Dan YANG Jing LIU Cui TIAN Yong ZENG Yue-hong ZHENG Quan FANG Hui-hua LI 2010Acta Pharmacologica Sinica2010,31,10:8
13Small Interfering RNA-mediated Caveolin-1 Knockout on Plasminogen Activator Inhibitor-1 Expression in Insulin-stimulated Human Vascular Endothelial Cells显示文摘把人的脉管的 endothelial 房间(ECV304 ) 用作目标,我们学习了 caveolin (CAV ) 的效果在 plasminogen 的刺激胰岛素的表示期间的 -1 禁止者(白族)-1。代表 RNAi CAV-1 基因的适当搁浅单人赛的 oligonucleotides 被 Ambion 软件分析。在退火产生双 stranded oligonucleotides (dsoligo ) 以后,它被克隆进由 T4 DNA 连接酶包含 RNA 聚合酶 III 表示元素的 pENTR/U6 入口向量。从 pENTR/U6 入口转移的短发卡(shRNA ) 序列与 LR 再结合反应被克隆进 pLenti6/BLOCK-iT-DEST 向量。由定序的 Afteridentification,我们成功地用网关技术构造了 CAV-1 RNAi lentiviral 表达式系统。Silencing 效率是由即时 reversetranscription 聚合酶链反应,免疫荧光染色并且西方的弄污的 assayed。ECV304cells 在包含胰岛素的不同集中的媒介是有教养的(1x10 ^( 有 CAV-1 基因 silenced 的 -9)to1x10^(-7) M ) 。表示水平和潜水艇 PAI-1 和 CAV-1 的细胞的本地化用反向的抄写聚合酶链反应,免疫荧光染色和蛋白质印迹试金被比较。结果证明有势力抑制 ofCAV-1 表示能到达 85% ,并且它对 CAV-1-derived shRNA,不是导出 theS100A13 的 shRNA 特定。在蛋白质确实在房间膜下面积累了的在与生理的胰岛素,而是 PAI-1 孵化的 RNAi^+andRNAi^- ECV304 房间之间的 PAI-1 表示没有戏剧的差别。当胰岛素的集中增加了, PAI-1 的表示是起来调整的,而 CAV-1 的表示稀释了。而且, PAI-1 清楚地在 CAV-1knockdown 以后扩充了。这些结果显示 hyperinsulinism 能由 inhibitingCAV-1 支持 PAI-1 表示,并且稳定或在 endothelial 房间的起来调整的 CAV-1 表示可能在糖尿病减少大容器和毛状的容器的复杂并发症。Huiling YANG Shuya HE Zhihua QUAN Weixia PENG Bin YAN Jianghua LIU Fang WEN Renxian CAO Yangyan XU Gebo WEN Weixin HU 2007Acta Biochimica et Biophysica Sinica2007,39,3:7
14Effects of total pressures and equivalence ratios on kerosene/air rotating detonation engines using a paralleling CE/SE method显示文摘In this paper,the kerosene/air rotating detonation engines(RDE)are numerically investigated,and the emphasis is laid on the effects of total pressures and equivalence ratios on the operation characteristics of RDE including the initiation,instabilities,and propulsive performance.A hybrid MPI t OpenMP parallel computing model is applied and it is proved to be able to obtain a more effective parallel performance on high performance computing(HPC)systems.A series of cases with the total pressure of 1 MPa,1.5 MPa,2 MPa,and the equivalence ratio of 0.9,1,1.4 are simulated.On one hand,the total pressure shows a significant impact on the instabilities of rotating detonation waves.The instability phenomenon is observed in cases with low total pressure(1 MPa)and weakened with the increase of the total pressure.The total pressure has a small impact on the detonation wave velocity and the specific impulse.On the other hand,the equivalence ratio shows a negligible influence on the instabilities,while it affects the ignition process and accounts for the detonation velocity deficit.It is more difficult to initiate rotating detonation waves directly in the lean fuel operation condition.Little difference was observed in the thrust with different equivalence ratios of 0.9,1,and 1.4.The highest specific impulse was obtained in the lean fuel cases,which is around 2700 s.The findings could provide insights into the understanding of the operation characteristics of kerosene/air RDE.Fang Wang Chun-sheng Weng Yu-wen Wu Qiao-dong Bai Quan Zheng Han Xu 2021Defence Technology(防务技术)2021,17,6:7
15Prevalence of Anti-endothelial Cell Antibodies in Patients with Pulmonary Arterial Hypertension Associated with Connective Tissue Diseases显示文摘Objective To investigate the prevalence of anti-endothelial cell antibodies (AECAs) in the sera of connective tissue diseases (CTD) patients with pulmonary arterial hypertension (PAH) and its correlation with clinical manifestations. Methods AECAs in sera of 39 CTD patients with PAH,22 CTD patients without PAH,and 10 healthy donors as controls were detected with Western blotting. The prevalence of different AECAs in different groups was compared and its correlation with clinical manifestations was also investigated. Results The prevalence of AECAs was 82.1% in CTD patients with PAH,72.7% in CTD patients without PAH,and 20.0% in healthy donors. Anti-22 kD AECA was only detected in CTD patients with PAH (15.4%). Anti-75 kD AECA was more frequently detected in CTD patients with PAH than in those without PAH (51.3% vs. 22.7%,P<0.05). In CTD patients with PAH,anti-75 kD AECA was more frequently detected in those with Raynaud’s phenomenon or with positive anti-RNP antibody. Conclusion AECAs could be frequently detected in CTD patients with or without PAH,while anti-22 kD and anti-75 kD AECA might be specific in CTD patients with PAH.Meng-tao Li Jun Ai Zhuang Tian Quan Fang Wen-jie Zheng Xue-jun Zeng Xiao-feng Zeng 2010Chinese Medical Sciences Journal2010,25,1:7
16Seed metabolomic study reveals significant metabolite variations and correlations among different soybean cultivars显示文摘Soybean[Glycine max(L.) Merr.]is one of the world's major crops,and soybean seeds are a rich and important resource for proteins and oils.While 'omics' studies,such as genomics,transcriptomics,and proteomics,have been widely applied in soybean molecular research,fewer metabolomic studies have been conducted for largescale detection of low molecular weight metabolites,especially in soybean seeds.In this study,we investigated the seed metabolomes of 29 common soybean cultivars through combined gas chromatography-mass spectrometry and ultra-performance liquid chromatography-tandem mass spectrometry.One hundred sixty-nine named metabolites were identified and subsequently used to construct a metabolic network of mature soybean seed.Among the 169 detected metabolites,104 were found to be significantly variable in their levels across tested cultivars.Metabolite markers that could be used to distinguish genetically related soybean cultivars were also identified,and metabolitemetabolite correlation analysis revealed some significant associations within the same or among different metabolite groups.Findings from this work may potentially provide the basis for further studies on both soybean seed metabolism and metabolic engineering to improve soybean seed quality and yield.Hong Lin Jun Rao Jianxin Shi Chaoyang Hu Fang Cheng Zoe A.Wilson Dabing Zhang Sheng Quan 2014Journal of Integrative Plant Biology2014,56,9:7
17Design of freeform geometries in a MEMS accelerometer with a mechanical motion preamplifier based on a genetic algorithm显示文摘This paper describes a novel,semiautomated design methodology based on a genetic algorithm(GA)using freeform geometries for microelectromechanical systems(MEMS)devices.The proposed method can design MEMS devices comprising freeform geometries and optimize such MEMS devices to provide high sensitivity,large bandwidth,and large fabrication tolerances.The proposed method does not require much computation time or memory.The use of freeform geometries allows more degrees of freedom in the design process,improving the diversity and performance of MEMS devices.A MEMS accelerometer comprising a mechanical motion amplifier is presented to demonstrate the effectiveness of the design approach.Experimental results show an improvement in the product of sensitivity and bandwidth by 100%and a sensitivity improvement by 141%compared to the case of a device designed with conventional orthogonal shapes.Furthermore,excellent immunities to fabrication tolerance and parameter mismatch are achieved.Chen Wang Xiaoxiao Song Weidong Fang Fang Chen Ioannis Zeimpekis Yuan Wang Aojie Quan Jian Bai Huafeng Liu Gerold Schropfer Chris Welham Michael Kraft 2020Microsystems & Nanoengineering2020,6,1:6
18Nonlinear Skew Lie Triple Derivations between Factors显示文摘让 A 是一个因素。为 A, B A,定义由[一, B ]*= AB BA * A 和 B 的斜谎言产品。在这篇文章,它被证明那一张地图: A 满足([[一, B ]*, C ]*)=[[(A), B ]*, C ]*+[[一,(B)]*, C ]*+[[一, B ]*,(C)]为所有 A 的*, B , C A 如果并且仅当是添加剂*推导。Chang Jing LI Fang Fang ZHAO Quan Yuan CHEN 2016Acta Mathematica Sinica,English Series2016,32,7:6
19Predictive Ability of the SYNergy Between Percutaneous Coronary Intervention with TAXus and Cardiac Surgery Score Ⅱ for Long-term Mortality in Patients with Three-vessel Coronary Artery Disease Undergoing Percutaneous Coronary Intervention Treated显示文摘Ji-Qiang He Xian-Peng Yu Cheng Peng Quan Li Ya-Wei Luo Yue-Chun Gao Xiao-Ling Zhang Chang-Yan Wu Hua Zhao Yu-Chen Zhang Jing-Hua Liu Shu-Zheng Lyu Fang Chen 2015Chinese Medical Journal2015,,16:5
20Heterogeneous degradation of toxic organic pollutants by hydrophobic copper Schiff-base complex under visible irradiation显示文摘A hydrophobic complex of Cu2+[bis-salicylic aldehyde-o-phenylenediamine],Cu-SPA,was prepared and used as a heterogeneous photocatalyst to degrade organic pollutants in water under visible irradiation(420 nm)at neutral pH.The structure of complex was characterized by using nuclear magnetic resonance(NMR),elemental analysis,IR and UV-vis spectrometries.Degradation of Rhodamine B(RhB),Sulforhodamine B(SRB)and Benzoic acid(BA)in water were used as model reactions to evaluate the photocatalytic activities of Cu-SPA.The results indicated that RhB and SRB were easily adsorbed on the hydrophobic surface of Cu-SPA from aqueous solution(the maximum adsorption amount:Qmax=11.09 and 8.05μmol/g,respectively).Under visible irradiation,RhB and SRB were decolorized completely after 210 and 240 min,respectively,and BA was removed completely after 5 h.The efficiency of H2O2was>95%,in contrast to that of the reaction without catalyst or light(<20%).In water soluble medium,the hydrophobic Cu-SPA can be used more than 6 cycles.ESR results and the behavior of cyclic voltammetry showed that,in the reaction process,Cu2+-SPA was reduced to intermediate state Cu+-SPA firstly,which was extremely unstable and reacted rapidly with H2O2,leading to high reactive oxygen species(·OH radical)to degrade the substrate.SONG Quan JIA ManKe MA WanHong FANG YanFen HUANG YingPing 2013Science China Chemistry2013,56,12:5
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