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In-situ decoration of metallic Bi on BiOBr with exposed(110)facets and surface oxygen vacancy for enhanced solar light photocatalytic degradation of gaseous n-hexane

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Chinese Journal of Catalysis 2020年第10期41卷 1603-1612页

作者： Qingqing Yu Jiangyao Chen Yanxu li Meicheng Wen Hongli liua guiying li Taicheng An Guangzhou Key Laboratory Environmental Catalysis and Pollution Control Guangdong Key Laboratory of Environmental Catalysis and Health Risk ControlSchool of Environmental Science and EngineeringInstitute of Environmental Health and Pollution ControlGuangdong University of TechnologyGuangzhou 510006GuangdongChina Synergy Innovation Institute of GDUT Shantou 515041GuangdongChina

Photocatalytic degradation of gaseous pollutants on Bi-based semiconductors under solar lightirradiation has attracted significant ***,their application in gaseous straight-chainalkane purification is still ***,a series of Bi/BiOBr composites were solvothermally synthe-sized and applied in solar-light-driven photocatalytic degradation of gaseous *** charac-terization results revealed that both increasing number of functional groups of alcohol solvent(from methanol and ethylene glycol to glycerol)and solvothermal temperature(from 160 and 180to 200℃)facilitated the in-situ formation of metallic Bi nanospheres on BiOBr nanoplates withexposed(110)***,chemical bonding between Bi and BiOBr was observed on theseexposed facets that resulted in the formation of surface oxygen ***,the synergis-tic effect of optimum surface oxygen vacancy on exposed(110)facets led to a high visible light re-sponse,narrow band gap,great photocurrent,low recombination rate of the charge carriers,andstrong·O2-and h*formation,all of which resulted in the highest removal efficiency of 97.4%within120 min of 15 ppmv of n-hexane on Bi/*** findings efficiently broaden the application ofBi-based photocatalysis technology in the purification of gaseous straight-chain pollutants emittedby the petrochemical industry.

关键词： Bi/BiOBr composite Exposed(110〕facet surface oxygen vacancy Solar light photocatalysis Degradation of gaseous alkane

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高-低频重复经颅磁刺激联合应用对脑梗死偏瘫患者神经递质及运动功能的影响

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中华保健医学杂志 2024年第1期26卷 26-29页

作者：李桂英陈国芳傅新民徐州市中心医院神经内科 221009

目的探讨高-低频重复经颅磁刺激联合应用对脑梗死偏瘫患者神经递质及运动功能的影响。方法选取2019年8月~2022年8月徐州市中心医院收治的脑梗死偏瘫患者105例,随机数表法分为低频组、高频组和联合组,各35例。在常规康复治疗基础上,低频... 详细信息

目的探讨高-低频重复经颅磁刺激联合应用对脑梗死偏瘫患者神经递质及运动功能的影响。方法选取2019年8月~2022年8月徐州市中心医院收治的脑梗死偏瘫患者105例,随机数表法分为低频组、高频组和联合组,各35例。在常规康复治疗基础上,低频组给予健侧低频rTMS治疗,高频组接受患侧高频rTMS治疗,联合组同时接受健侧低频和患侧高频rTMS治疗。比较各组患者血清神经递质[5-羟色胺(5-HT)、多巴胺(DA)、脑源性神经营养因子(BDNF)]水平、神经传导功能[运动诱发电位(MEP)潜伏期、运动传导时间(CMCT)]及肢体运动功能[Fugl-Meyer运动功能量表(FMA)评分、Berg平衡量表(BBS)评分、Barthel指数]差异。结果治疗前,3组患者血清5-HT、DA及BDNF水平差异均无统计学意义(P>0.05)。治疗后,3组患者血清5-HT、DA、BDNF水平显著提高,其中联合组明显高于低频组、高频组,差异有统计学意义(F=12.038、16.356、9.388,P0.05)。治疗后,3组患者FMA评分、BBS评分、Barthel指数显著提高,其中联合组明显高于低频组、高频组,差异有统计学意义(F=6.562、4.971、6.604,P0.05)。治疗后,3组患者MEP潜伏期、CMCT均缩短,且联合组MEP潜伏期、CMCT小于低频组、高频组,差异有统计学意义(F=10.234、9.615,P<0.05)。结论高-低频联合rTMS能刺激神经递质释放,促进脑梗死偏瘫患者肢体运动功能恢复,效果优于单一频率rTMS治疗,可作为临床有效的辅助治疗手段。

关键词：脑梗死偏瘫重复经颅磁刺激运动功能神经递质血流动力学

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Novel Ag-bridged dual Z-scheme g-C_(3)N_(4)/BiOI/AgI plasmonic heterojunction: Exceptional photocatalytic activity towards tetracycline and the mechanism insight

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Journal of Environmental Sciences 2023年第9期131卷 123-140页

作者： Wenxia Wang Zhen li Kailin Wu Guodong Dai Qingping Chen lihua Zhou Junxia Zheng liang Ma guiying li Wanjun Wang Taicheng An School of Biomedical and Pharmaceutical Sciences Guangdong University of TechnologyGuangzhou 510006China Guangdong Key Laboratory of Environmental Catalysis and Health Risk Control Guangdong-Hong Kong-Macao Joint Laboratory for Contaminants Exposure and HealthInstitute of Environmental Health and Pollution ControlGuangdong University of TechnologyGuangzhou 510006China Guangzhou Key lab of Clean Transport Energy and Chemistry Guangdong University of TechnologyGuangzhou 510006China Guangzhou Key Laboratory of Environmental Catalysis and Pollution Control Guangdong Technology Research Center for Photocatalytic Technology Integration and Equipment EngineeringSchool of Environmental Science and EngineeringGuangdong University of TechnologyGuangzhou 510006China

Rational design and synthesis of highly efficient and robust photocatalysts with positive exciton splitting and interfacial charge transfer for environmental applications is ***,aiming at overcoming the common shortcomings of traditional photocatalysts such as weak photoresponsivity,rapid combination of photo-generated carriers and unstable structure,a novel Ag-bridged dual Z-scheme g-C_(3)N_(4)/BiOI/AgI plasmonic heterojunction was successfully synthesized using a facile *** showed that Ag-AgI nanoparticles and three-dimensional(3D)BiOI microspheres were decorated highly uniformly on the 3D porous g-C_(3)N_(4) nanosheet,resulting in a higher specific surface area and abundant active *** optimized 3D porous dual Z-scheme g-C_(3)N_(4)/BiOI/Ag-AgI manifested exceptional photocatalytic degradation efficiency of tetracycline(TC)in water with approximately 91.8%degradation efficiency within 165 min,outperforming majority of the reported g-C_(3)N_(4)-based ***,g-C_(3)N_(4)/BiOI/Ag-AgI exhibited good stability in terms of activity and ***-depth radical scavenging and electron paramagnetic resonance(EPR)analyses confirmed the relative contributions of various *** analysis indicated that the improved photocatalytic performance and stability were ascribed to the highly ordered 3D porous framework,fast electron transfer of dual Z-scheme heterojunction,desirable photocatalytic performance of BiOI/AgI and synergistic effect of Ag ***,the 3D porous Z-scheme g-C_(3)N_(4)/BiOI/Ag-AgI heterojunction had a good prospect for applications in water *** current work provides new insight and useful guidance for designing novel structural photocatalysts for environment-related applications.

关键词： Three-dimensional Porous heterostructure Graphitic carbon nitride(g-C_(3)N_(4)) Dual Z-scheme heterojunction Tetracycline(TC)degradation Mechanism insight

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Assessing the role of mineral particles in the atmospheric photooxidation of typical carbonyl compound

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Journal of Environmental Sciences 2021年第7期33卷 56-63页

作者： Yongpeng Ji Xingyu Chen Yuqi Xiao Yuemeng Ji Weina Zhang Jiaxin Wang Jiangyao Chen guiying li Taicheng An Guangdong Key Laboratory of Environmental Catalysis and Health Risk Control Guangdong-Hong Kong-Macao Joint Laboratory for Contaminants Exposure and HealthInstitute of Environmental Health and Pollution controlKey Laboratory of City Cluster Environmental Safety and Green developmentSchool of Environmental Science and EngineeringGuangdong University of TechnologyGuangzhou 510006China

Mineral particles are ubiquitous in the atmosphere and exhibit an important effect on the photooxidation of volatile organic compounds(VOCs).However,the role of mineral particles in the photochemical oxidation mechanism of VOCs remains ***,the photooxi-dation reactions of acrolein(ARL)with OH radical(OH)in the presence and absence of SiO_(2) were investigated by theoretical *** gas-phase reaction without SiO_(2) has two distinct pathways(H-abstraction and OH-addition pathways),and carbonyl-H-abstraction is the dominant *** the presence of SiO_(2),the reaction mechanism is changed,i.e.,the dominant pathway from carbonyl-H-abstraction to OH-addition to carbonyl *** energy barrier of OH-addition to carbonyl C-atom deceases 21.33 kcal/mol when SiO_(2) is *** H-atom of ARL is occupied by SiO_(2) via hydrogen bond,and carbonyl C-atom is ac-tivated by SiO_(2).Hence,the main product changes from H-abstraction product to OH-adduct in the presence of SiO_(2).The OH-adduct exhibits a thermodynamic feasibility to yield HO_(2) radical and carboxylic acid via the subsequent reactions with O_(2),with implications for O 3 formation and surface acidity of mineral particles.

关键词： Photochemical oxidation Mineral particles Acrolein Reaction mechanism

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Microwave-assisted synthesis of defective tungsten trioxide for photocatalytic bacterial inactivation:Role of the oxygen vacancy

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Chinese Journal of Catalysis 2020年第10期41卷 1488-1497页

作者： Wenquan Gu Wanjun Wang guiying li Haojing Xiea Po Keung Wong Taicheng An Guangzhou Key Laboratory Environmental Catalysis and Pollution Control Guangdong Key Laboratory of Environmental Catalysis and Health Risk ControlSchool o f Environmental Science and EngineeringInstitute o f Environmental Health and Pollution ControlGuangdong University of TechnologyGuangzhou 510006GuangdongChina School of life Sciences The Chinese University of Hong KongShatinNTHong KongChina

Surface defect modulation has emerged as a potential strategy for promoting the photocatalytic activity of photocatalysts for various applications, while the impact of the oxygen vacancy on bacterial inactivation is still debated. In this study, oxygen vacancies were introduced to tungsten trioxide nanosheets(WO3–x) via a microwave-assisted route. The as-prepared WO3–x nanosheets exhibited excellent visible-light-driven photocatalytic activity toward E. coli K-12 inactivation, and 6 log orders of the bacterial cells could be completely inactivated within 150 min. The obtained bacterial inactivation rate constant was 15.2 times higher than that of pristine WO3 without oxygen vacancies, suggesting that the surface oxygen vacancy could significantly promote the bacterial inactivation efficiency. The mechanism study indicated that the inactivation of bacterial cells occurs via a direct h+ oxidation pathway. In addition, the role of the oxygen vacancy was studied in detail;the oxygen vacancy was found to not only promote interfacial charge separation but also tune the band structure of WO3, thereby leading to increased h+ oxidation power. Finally, a possible oxygen vacancy-dominated photocatalytic bacterial inactivation mechanism is proposed. This work is expected to offer new insights into the microwave-assisted synthesis of defective photocatalysts and the use of the oxygen vacancy for promoting photocatalytic antibacterial activities.

关键词： Photocatalysis WO3 Microwave Oxygen vacancy Bacterial inactivation

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Remediation of preservative ethylparaben in water using natural sphalerite:Kinetics and mechanisms

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Journal of Environmental Sciences 2022年第3期34卷 72-80页

作者： Yanpeng Gao Teng Guo Xiaolin Niu Na Luo Jia Chen Junlang Qiu Yuemeng Ji guiying li Taicheng An Guangdong-Hong Kong-Macao Joint Laboratory for Contaminants Exposure and Health Guangdong Key Laboratory of Environmental Catalysis and Health Risk ControlInstitute of Environmental Health and Pollution controlGuangdong University of TechnologyGuangzhou 510006China Guangzhou Key Laboratory of Environmental Catalysis and Pollution Control Key Laboratory of City Cluster Environmental Safety and Green developmentSchool of Environmental Science and EngineeringGuangdong University of TechnologyGuangzhou 510006China Division of Analytical and Environmental Toxicology Department of Laboratory Medicine and PathologyFaculty of Medicine and DentistryUniversity of AlbertaEdmontonAB T6G 2G3Canada

As a typical class of emerging organic contaminants(EOCs), the environmental transformation and abatement of preservative parabens have raised certain environmental concerns. However, the remediation of parabens-contaminated water using natural matrixes(such as, naturally abundant minerals) is not reported extensively in literature. In this study, the transformation kinetics and the mechanism of ethylparaben using natural sphalerite(NS) were investigated. The results show that around 63% of ethylparaben could be absorbed onto NS within 38 hr, whereas the maximum adsorption capacity was 0.45 mg/g under room temperature. High temperature could improve the adsorption performance of ethylparaben using NS. In particular, for the temperature of 313 K, the adsorption turned spontaneous. The well-fitted adsorption kinetics indicated that both the surface adsorption and intra-particle diffusion contribute to the overall adsorption process. The monolayer adsorption on the surface of NS was primarily responsible for the elimination of ethylparaben. The adsorption mechanism showed that hydrophobic partitioning into organic matter could largely govern the adsorption process, rather than the Zn S that was the main component of NS. Furthermore, the ethylparaben adsorbed on the surface of NS was stable, as only less than 2% was desorbed and photochemically degraded under irradiation of simulated sunlight for 5 days. This study revealed that NS might serve as a potential natural remediation agent for some hydrophobic EOCs including parabens, and emphasized the significant role of naturally abundant minerals on the remediation of EOCs-contaminated water bodies.

关键词： Emerging organic contaminants Paraben Naturally abundant minerals Natural sphalerite Adsorption mechanism

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炼钢天车车轮轴断裂原因分析

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金属制品 2024年第3期50卷 52-55页

作者：马昂昂柯炜李桂英王一帆青岛特殊钢铁有限公司质量检测所山东青岛266049

炼钢天车车轮轴运行过程中断裂。对车轮轴断裂进行失效分析。结果表明:车轮轴由45钢而非40Cr钢制成,断口磨损严重,通过电镜观察有韧窝特征,为韧性断裂,车轮轴基体组织为珠光体+铁素体,没有经过热处理,因为车轮轴未按规定使用材料,未经... 详细信息

炼钢天车车轮轴运行过程中断裂。对车轮轴断裂进行失效分析。结果表明:车轮轴由45钢而非40Cr钢制成,断口磨损严重,通过电镜观察有韧窝特征,为韧性断裂,车轮轴基体组织为珠光体+铁素体,没有经过热处理,因为车轮轴未按规定使用材料,未经调质处理,力学性能较低,从而导致断裂。

关键词： 40Cr 车轮轴断裂失效分析力学性能

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Preliminary　Study　on　Physiological　Race　Differentiation　in　Tomato　Leaf　Mold　in　Three　Northeastern　Provinces　of　China

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Journal of Northeast Agricultural University(English Edition) 1996年第1期3卷 63-66页

作者： li guiying li Jingfu li Yonghao Guo Qingxun Wangfu(Northeast Agricultural University,Harbin 150030,PR China)

Tomato leaf mold samples collected from tomato plants cultivated in plastic house in three northeastern provinces of China were studied by artifical spray inoculation at seedling stage,consulting Hubbcling physiological race differential hosts and adopting Day's classification system(1971).The results indicated that there were three races in these provinces;they were races 1,2,3,race 1,3 and race *** them race 1,2,3 was the predominant.

关键词： tomato leaf mold physiological race

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Recent advances in the catalytic pyrolysis of biomass

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Frontiers of Chemical Science and Engineering 2011年第2期5卷 188-193页

作者： Changwei HU Yu YANG Jia LUO Pan PAN Dongmei TONG guiying li Key Laboratory of Green Chemistry and Technology(Ministry of Education) College of ChemistrySichuan UniversityChengdu 610064China

Biomass is considered as a renewable and alternative resource for the production of fuels and chemicals,since it is the only carbon and hydrogen containing resource that we canﬁnd in the world except for fossil resources,capable of being converted to *** pyrolytic liquefaction of biomass is a promising way to convert biomass to useful *** paper brieﬂy surveys the present status of the direct catalytic pyrolysis for the liquefaction of *** direct use of catalysts could decrease the pyrolysis temperature,increase the conversion of biomass and the yield of bio-oil,and change the distribution of the pyrolytic liquid products then improve the quality of the bio-oil *** fact that biomass is in solid state present great challenges for its conversion and for the effective use of catalysts due to the bad heat transfer characteristics and bad mass transfer *** barriers appeal for the development of a new catalyst and new catalytic process as well as the integration of *** design and process intensiﬁcation are of signiﬁcant importance in the catalytic conversion of biomass.

关键词： biomass liquefaction catalysis bio-oil pro-cess intensiﬁcation

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抗线粒体抗体、红细胞体积分布宽度与原发性胆汁性胆管炎熊去氧胆酸治疗应答效果的关系

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中国医药导报 2024年第4期21卷 100-103页

作者：张玲玲张会品李桂英孔燕马兰南京市高淳人民医院检验科江苏南京211300

目的探讨抗线粒体抗体(AMA)、红细胞分布宽度(RDW)与原发性胆汁性胆管炎熊去氧胆酸治疗应答效果的关系。方法采用回顾性研究方法,选取在南京市高淳人民医院2019年6月至2022年6月接受熊去氧胆酸治疗的126例原发性胆汁性胆管炎患者,根... 详细信息

目的探讨抗线粒体抗体(AMA)、红细胞分布宽度(RDW)与原发性胆汁性胆管炎熊去氧胆酸治疗应答效果的关系。方法采用回顾性研究方法,选取在南京市高淳人民医院2019年6月至2022年6月接受熊去氧胆酸治疗的126例原发性胆汁性胆管炎患者,根据患者治疗应答结局将其分为应答良好组60例和应答不良组66例,比较两组临床资料及治疗前的AMA、RDW水平,采用logistic回归模型分析AMA、RDW对原发性胆汁性胆管炎患者熊去氧胆酸应答效果的影响。结果应答不良组治疗前的谷丙转氨酶(GPT)、谷草转氨酶(GOT)、碱性磷酸酶、γ-谷氨酰转移酶(GGT)、总胆红素(TBil)、直接胆红素(DBil)、RDW水平均高于应答良好组,AMA阳性率低于应答良好组,差异有统计学意义(P<0.05)。多因素分析结果显示,GPT(OR=1.941,95%CI:1.157~3.256)、GOT(OR=1.808,95%CI:1.073~3.045)、GGT(OR=1.504,95%CI:1.028~2.200)、TBil(OR=2.088,95%CI:1.279~3.408)、DBil(OR=1.735,95%CI:1.112~2.707)、RDW (OR=1.562,95%CI:1.091~2.236)、AMA阳性率(OR=0.584,95%CI:0.399~0.854)是原发性胆汁性胆管炎患者熊去氧胆酸治疗应答不良的独立影响因素(P<0.05)。结论 RDW增高、AMA阳性率降低是熊去氧胆酸治疗原发性胆汁性胆管炎患者应答不良的独立危险因素,临床中应予以重视。

关键词：抗线粒体抗体红细胞分布宽度原发性胆汁性胆管炎应答效果

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