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Photodeposition of CoOx and MoS2 on CdS as dual cocatalysts for photocatalytic H2 production

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Journal of materials Science & Technology 2022年第29期124卷 209-216页

作者： Tingmin Di Quanrong Deng Geming Wang Shenggao Wang Linxi Wang yuhua ma Hubei Key Laboratory of Plasma Chemistry and Advanced materials School of Materials Science and EngineeringWuhan Institute of TechnologyWuhan 430205China Laboratory of Solar Fuel Faculty of Materials Science and ChemistryChina University of GeosciencesWuhan 430074China College of Chemistry and Chemical Engineering Xinjiang Normal UniversityUrumqi 830054China

Photocatalytic Hproduction from water splitting has a promising prospect for alleviating energy and environmental issues.However,the fast recombination of photogenerated charge carriers limits the photocatalytic efficiency and its practical application.Cocatalyst engineering is an effective strategy to spatially separate photogenerated charge carriers.In this work,noble-metal-free MoSand CoOcocatalysts are loaded on CdS nanorods by a two-step photodeposition method.The MoSfunctions as the reduction cocatalyst to trap electrons and Co Oas the oxidation cocatalyst to trap holes.Transmission electron microscopy(TEM),inductively coupled plasma(ICP),X-ray photoelectron spectroscopy(XPS)and MottSchottky results demonstrate the effectiveness of photodeposition for loading MoSand CoOdual cocatalysts on CdS and their impact on the photochemical properties.The optimized CdS-MoS-CoOcomposite exhibits a high photocatalytic H-production rate of 7.4 mmol g^(-1)h^(-1)and an apparent quantum efficiency(QE)of 7.6%at 420 nm.Further analysis on time-resolved photoluminescence(TRPL)indicates that the introduction of dual cocatalysts greatly prolongs the lifetime of photogenerated charge carriers and deceases the charge recombination rates,consequently leading to superior photocatalytic H-production performance.This work provides a facile and effective strategy for the construction of highly efficient dual-cocatalyst-modified CdS photocatalyst for high-performance photocatalytic Hproduction.

关键词： Photocatalytic H2 production CdS Dual cocatalysts MoS2 CoOx Photodeposition

Solar fuel generation over nature-inspired recyclable TiO_(2)/g-C_(3)N_(4)S-scheme hierarchical thin-film photocatalyst

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Journal of materials Science & Technology 2022年第17期112卷 1-10页

作者： Libo Wang Xingang Fei Liuyang Zhang Jiaguo Yu Bei Cheng yuhua ma State Key Laboratory of Advanced Technology for materials Synthesis and Processing Wuhan University of TechnologyWuhan 430070China Laboratory of Solar Fuel Faculty of Materials Science and ChemistryChina University of Geosciences388 Lumo RoadWuhan 430074China College of Chemistry and Chemical Engineering Xinjiang Normal UniversityUrumqi 830054China

Preparation of efficient photocatalysts with ease of recovery in solar fuel generation is highly desired to achieve carbon neutralization in carbon dioxide(CO_(2))emissions.Inspired from the forest with superior light penetration and fast gas transport,a TiO_(2)/g-C_(3)N_(4)composite nanowire arrays(NAs)film with maximized light utilization is devised.It is achieved by in-situ coating a thin layer of g-C_(3)N_(4)(as the leaf)on the vertically-oriented TiO_(2)arrays(as tree trunks)on Ti foil(as soil).Benefiting from the effective charge separation by S-scheme charge transfer,intimate contact by the in-situ growth as well as the ingenious structure,the composite,readily recyclable,displays exciting performance in photocatalytic CO_(2)reduction.It is beyond doubt that the combination of heterojunction construction and“nature-inspired biomimetic photocatalyst”design promises practical applications and industrial use.

关键词： Carbon neutralization Solar fuels Intimate interfacial contact S-scheme heterojunction Biomimetic photocatalyst

The long-circulating effect of pegylated nanoparticles revisited via simultaneous monitoring of both the drug payloads and nanocarriers

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Acta Pharmaceutica Sinica B 2022年第5期12卷 2479-2493页

作者： Wufa Fan Haixia Peng Zhou Yu Luting Wang Haisheng He yuhua ma Jianping Qi Yi Lu Wei Wu Key Laboratory of Smart Drug Delivery of MOE School of PharmacyFudan UniversityShanghai 201203China Center for Medical Research and Innovation Shanghai Pudong HospitalFudan University Pudong Medical CenterShanghai 201399China Shanghai Skin Disease Hospital Tongji University School of MedicineShanghai 200443China Key Laboratory for Tibet Plateau Phytochemistry of Qinghai Province School of PharmacyQinghai Nationalities UniversityXining 810007China

The long-circulating effect is revisited by simultaneous monitoring of the drug payloads and nanocarriers following intravenous administration of doxorubicin(DOX)-loaded methoxy polyethylene glycol-polycaprolactone(mPEG-PCL) nanoparticles. Comparison of the kinetic profiles of both DOX and nanocarriers verifies the long-circulating effect, though of limited degree, as a result of pegylation. The nanocarrier profiles display fast clearance from the blood despite dense PEG decoration;DOX is cleared faster than the nanocarriers. The nanocarriers circulate longer than DOX in the blood, suggesting possible leakage of DOX from the nanocarriers. Hepatic accumulation is the highest among all organs and tissues investigated, which however is reversely proportionate to blood circulation time. Pegylation and reduction in particle size prove to extend circulation of drug nanocarriers in the blood with simultaneous decrease in uptake by various organs of the mononuclear phagocytic system. It is concluded that the long-circulating effect of mPEG-PCL nanoparticles is reconfirmed by monitoring of either DOX or the nanocarriers, but the faster clearance of DOX suggests possible leakage of a fraction of the payloads. The findings of this study are of potential translational significance in design of nanocarriers towards optimization of both therapeutic and toxic effects.

关键词： Long-circulating In vivo fate Aggregation-caused quenching Nanoparticles mPEG-PCL Doxorubicin Drug delivery Pharmacokinetics

Construction of oxygen-vacancies-rich S-scheme BaTiO_(3)/red phosphorous heterojunction for enhanced photocatalytic activity

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Journal of materials Science & Technology 2023年第25期156卷 217-229页

作者： yuhua ma Xiadiye Aihemaiti Kezhen Qi Shiyin Wang Yanjie Shi Zhuanhu Wang Minghe Gao Fuhe Gai Yulian Qiu College of Chemistry and Chemical Engineering Xinjiang Normal UniversityUrumqi 830054China Xinjiang Key Laboratory of Energy Storage and Photoelectrocatalytic materials Xinjiang Normal UniversityUrumqi 830054China College of Pharmacy Dali UniversityDali 671000China

The S-scheme heterojunctions can effectively separate photogenerated electrons and holes,retain their high redox capacity,and provide great prospects for enhancing the photocatalytic activity of the composites in different fields.Herein,S-scheme heterojunction photocatalytic materials were rationally designed and prepared by a simple hydrothermal method between narrow-bandgap red phosphorus(HRP)and wide-bandgap BaTiO_(3)(BTO)photocatalysts.Owing to the effective charge separation and redox ability from the S-scheme mechanism and oxygen vacancies,BTO/HRP exhibited good photoelectrochemical and photocatalytic degradation ability.Systematic photoreaction tests demonstrated that BTO/HRP had high practicality in the removal of pollutants from wastewater;its photodegradation rate of Rhodamine B reached 3.029×10^(−1) min^(−1) in 12 min;and it could inactivate 1.8×10^(9) CFU/mL of Escherichia.coli in 1 h,with an antibacterial rate of 99.8%.This paper provided a promising photocatalyst for pollutant removal and a new strategy for the fabrication of efficient RP-based photocatalytic materials.

关键词： S-scheme heterojunction Red phosphorous BaTiO3 Photocatalytic activity

Allometric models for aboveground biomass of six common subtropical shrubs and small trees

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Journal of Forestry Research 2022年第4期33卷 1317-1328页

作者： Cheng Huang Chun Feng yuhua ma Hua Liu Zhaocheng Wang Shaobo Yang Wenjing Wang Songling Fu Han Y.H.Chen College of Forestry and Landscape Architecture Anhui Agricultural University130 Changjiang West RoadHefei 230036AnhuiPeople’s Republic of China Faculty of Natural Resources management Lakehead University955 Oliver RoadThunder BayON P7B 5E1Canada

The aboveground biomass(AGB)of shrubs and small trees is the main component for the productivity and carbon storage of understory vegetation in subtropical secondary forests.However,few allometric models exist to accurately evaluate understory biomass.To estimate the AGB of five common shrub(diameter at basemall tree species(mass in their stems compared with branches,with the lowest biomass in the leaves.Species-specific allometric models that employed stem diameter and the combined variables of D~2H andρDH as predictors accurately estimated the components and total AGB,with R^(2) values from 0.602 and 0.971.A multi-species shrub allometric model revealed that wood density×diameter×height(ρDH)was the best predictor,with R^(2) values ranging from between 0.81 and 0.89 for the components and total AGB,respectively.These results indicated that height(H)and diameter(D)were effective predictors for the models to estimate the AGB of the six species,and the introduction of wood density(ρ)improved their accuracy.The optimal models selected in this study could be applied to estimate the biomass of shrubs and small trees in subtropical regions.

关键词： Aboveground biomass Allometric models Shrubs Small trees Subtropical forests

Response Mechanism of Plants to Drought Stress

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Plant Diseases and Pests 2023年第5期14卷 30-34页

作者： Pei GAO yuhua ma College of Agriculture and Animal Husbandry Qinghai UniversityXining 810016China

Drought stress is an important factor affecting plant growth and development.It will provide a theoretical basis for cultivating new stress-resistant varieties and improving water utilization rate of plants by studying the regulation mechanism of osmotic adjustment and water transportation under drought stress,and understanding the physiological and biochemical characteristics and stress resistance mechanism.

关键词： Plant gene Drought stress Regulation mechanism Osmotic adjustment substance Water transportation

Host protection against Omicron BA.2.2 sublineages by prior vaccination in spring 2022 COVID-19 outbreak in Shanghai

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Frontiers of Medicine 2023年第3期17卷 562-575页

作者： Ziyu Fu Dongguo Liang Wei Zhang Dongling Shi yuhua ma Dong Wei Junxiang Xi Sizhe Yang Xiaoguang Xu Di Tian Zhaoqing Zhu Mingquan Guo Lu Jiang Shuting Yu Shuai Wang Fangyin Jiang Yun Ling Shengyue Wang Saijuan Chen Feng Liu Yun Tan Xiaohong Fan Shanghai Institute of Hematology National Research Center for Translational MedicineState Key Laboratory of Medical GenomicsRuijin Hospital Affiliated to Shanghai Jiao Tong University(SJTU)School of MedicineShanghai 200025China National Translational Science Center for Molecular Medicine&Department of Cell Biology Fourth Military Medical UniversityXi’an 710032China Shanghai Public Health Clinical Center Fudan UniversityShanghai 201508China Department of Nephrology Traditional Chinese Medicine Hospital of KunShanSuzhou 215300China Department of Infectious Diseases Ruijin Hospital Affiliated to Shanghai Jiao Tong University(SJTU)School of MedicineShanghai 200025China

The Omicron family of SARS-CoV-2 variants are currently driving the COVID-19 pandemic.Here we analyzed the clinical laboratory test results of 9911 Omicron BA.2.2 sublineages-infected symptomatic patients without earlier infection histories during a SARS-CoV-2 outbreak in Shanghai in spring 2022.Compared to an earlier patient cohort infected by SARS-CoV-2 prototype strains in 2020,BA.2.2 infection led to distinct fluctuations of pathophysiological markers in the peripheral blood.In particular,severe/critical cases of COVID19 post BA.2.2 infection were associated with less pro-inflammatory macrophage activation and stronger interferon alpha response in the bronchoalveolar microenvironment.Importantly,the abnormal biomarkers were significantly subdued in individuals who had been immunized by 2 or 3 doses of SARS-CoV-2 prototypeinactivated vaccines,supporting the estimation of an overall 96.02% of protection rate against severe/critical disease in the 4854 cases in our BA.2.2 patient cohort with traceable vaccination records.Furthermore,even though age was a critical risk factor of the severity of COVID-19 post BA.2.2 infection,vaccination-elicited protection against severe/critical COVID-19 reached 90.15% in patients aged≥60 years old.Together,our study delineates the pathophysiological features of Omicron BA.2.2 sublineages and demonstrates significant protection conferred by prior prototype-based inactivated vaccines.

关键词： SARS-CoV-2 COVID-19 host response bronchoalveolar lavage fluid(BALF)

Analysis of the Implementation of Integrated Healthcare management in Preoperative Preparation

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Journal of Clinical and Nursing Research 2023年第3期7卷 138-142页

作者： Huiling Liu Xuling Li Xinyi Liu yuhua ma Haomin Li Cuiqing Liu The First Affiliated Hospital of Jinan University Guangzhou 510630Guangdong ProvinceChina

Objective:To strengthen preoperative preparation management and reduce preoperative preparation defects.Methods:We set up a special medical care management team to investigate the preoperative preparation in surgical departments,analyze the causes of the shortcomings in preoperative preparation,and propose countermeasures.The medical staff jointly formulated plans related to preoperative preparation management including clear outline of responsibilities,strengthening of training,integrated medical care,timely feedback,and continuous improvement.Besides,the preoperative preparation of patients before and after the improvement measures were compared using statistical analysis.Results:The rate of inadequate preoperative preparation was 11.14 per thousand before the integrated management model was implemented.After the implementation of the integrated management model,the rate of inadequate preoperative preparation decreased to 2.99 per thousand,and the difference was statistically(Pmanagement of preoperative preparation can help reduce the rate of preoperative complications and ensure the safety of surgery.

关键词： Integrated healthcare Preoperative preparation Rate of inadequate preoperative preparation

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湿法氧化提取水中碳的方法优化

核技术 2024年第3期47卷 47-54页

作者：李磊刘卫马玉华李志强邓珂曾林林徐勇衡阳师范学院衡阳421010 中国科学院上海应用物理研究所上海201800

水中碳的提取是液闪谱仪测量环境水中14C的重要预处理步骤。本研究采用过硫酸钠与Fenton试剂相结合的湿法氧化体系以及磷酸酸化、氮气鼓泡的方法,对体积10 L已知碳组分(去离子水+蔗糖)和未知碳组分的两种水样进行湿法氧化碳提取的实验,... 详细信息

水中碳的提取是液闪谱仪测量环境水中14C的重要预处理步骤。本研究采用过硫酸钠与Fenton试剂相结合的湿法氧化体系以及磷酸酸化、氮气鼓泡的方法,对体积10 L已知碳组分(去离子水+蔗糖)和未知碳组分的两种水样进行湿法氧化碳提取的实验,同时对未知碳组分水样进行湿法氧化与185 nm紫外氧化相结合的碳提取实验。通过实验确定试剂最佳投放时间与顺序,优化试剂投放量及配比。在优化条件下,90℃水温反应3 h后,已知碳组分(去离子水+蔗糖)的有机碳提取率高于96%;未知碳组分的水中总碳提取率为(96.8±0.3)%,其中无机碳的提取率>98.5%、有机碳提取率为(93.4±0.2)%,其中单宁酸类有机物氧化率仅有(88±0.2)%。湿法氧化+185 nm紫外氧化联用后,未知碳组分的总碳提取率提升至(98.3±0.5)%,其中无机碳提取率≥99%、有机碳提取率达到(95.6±1.4)%。由此表明,湿法氧化法不能用典型有机物的碳回收率来代表实际水样中的碳回收率,湿法氧化与185 nm紫外氧化联用是水中碳提取的更好方法。

关键词：水中14C 湿法氧化紫外有机碳无机碳