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Synthesis,characterization,and theoretical study of N,S-codoped nano-TiO_2 with photocatalytic activities

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International Journal of Minerals,Metallurgy and Materials 2011年第5期18卷 606-614页

作者： hong-tao gao Yuan-yuan Liu Cui-hong Ding Dong-mei Dai Guang-jun Liu State Key Laboratory of Crystal materials Shandong University Jinan 250100 China College of Chemistry and Molecular Engineering Qingdao University of Science and Technology Qingdao 266042 China Department of Chemistry and Chemical Engineering Jining University Qufu 273155 China

Nitrogen and sulfur doped titanium dioxide photocatalysts were prepared by the sol-gel *** products were characterized by X-ray diffraction （XRD）,transmission electron microscopy （TEM）,and UV-visible diffuse reflectance spectra （DRS）.Photocatalytic activities of the samples were investigated on the degradation of methyl orange （MO）.The effect of the dopants on the electronic structure of TiO2 was studied by the first-principles calculations based on the density functional theory （DFT）.The orbital hybridization resulted in energy gap narrowing and electronic delocalization in the crystal of doped *** electrons of varied energetic states could offer enhanced electron transfer,together with optical absorption *** results show that the doping elements of N and S play a cooperative role in the modification of electronic structure,which enhances the photocatalytic *** experimentally observed absorption edges of N-doped TiO2,S-doped TiO2,and N,S-codoped TiO2 are 420,413,and 429 nm,respectively,which can be explained by the theoretical calculation results.

关键词： titanium dioxide doping electronic structure red shift photocatalysis nanoparticles

A novel trilinear decomposition algorithm:Three-dimension non-negative matrix factorization

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Chinese Chemical Letters 2007年第4期18卷 495-498页

作者： hong tao gao Dong Mei Dai Tong Hua Li College of Chemistry and Molecular Engineering Qingdao University of Science ＆ Technology Qingdao 266042 China Department of Chemistry Jining Teachers College Jining 273100 China Department of Chemistry Tongji University Shanghai 200092 China

Non-negative matrix factorization （NMF） is a technique for dimensionality reduction by placing non-negativity constraints on the matrix. Based on the PARAFAC model, NMF was extended for three-dimension data decomposition. The three-dimension nonnegative matrix factorization （NMF3） algorithm, which was concise and easy to implement, was given in this paper. The NMF3 algorithm implementation was based on elements but not on vectors. It could decompose a data array directly without unfolding, which was not similar to that the traditional algorithms do, It has been applied to the simulated data array decomposition and obtained reasonable results. It showed that NMF3 could be introduced for curve resolution in chemometrics.

关键词： Three-dimension non-negative matrix factorization NMF3 Algorithm Data decomposition Chemometrics

A ternary TiO_2/WO_3/graphene nanocomposite adsorbent: facile preparation and efficient removal of Rhodamine B

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International Journal of Minerals,Metallurgy and Materials 2014年第8期21卷 813-819页

作者： Yong-qiang Zhang Xiao-hui Li Jie Lü Chong-dian Si Guang-jun Liu hong-tao gao Pi-bo Wang Department of Chemistry and Chemical Engineering Jining University State Key Laboratory Base of Eco-chemical Engineering College of Chemistry and Molecular Engineering Qingdao University of Science & Technology North China Sea Branch of State Oceanic Administration

Ternary TiO2/WO3/graphene （TWG） nanocomposites were prepared by a facile salt-ultrasonic assisted hydrothermal method. The products were characterized by X-ray diffraction, scanning electron microscopy, transmission electron microscopy, and nitrogen adsorption--desorption. Both anatase TiO2 and orthorhombic WO3 formed in the nanocomposites, along with a highly disordered overlay of individual graphene nanosheets. Polyhedral and spherical TiO/and WO3 nanoparticles of uniform size 10-30 nm were densely anchored to the graphene sheets. The maximum specific surface area of the products was 144.59 m2·g^-1. The products showed clear abilities for the removal of Rhodamine B in the absence of illumination. Furthermore, the adsorption activity of the products exhibited only a slight decrease after three successive cycles. The results demonstrate that the ternary nanocomposites could be used as a high-efficiency adsorbent for the removal of environmental contaminants.

关键词： adsorbents nanocomposites titanium dioxide tungsten oxides graphene adsorption wastewater treatment

Botanical drugs for bruises used in the Xiangxi region of China, a place rich in martial culture

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Traditional Medicine Research 2023年第11期8卷 45-54页

作者： Jian-Wu He hong-tao gao Xuan Liu Qiang Li Jin Luo Jin Yan Bin-Sheng Luo National and Local United Engineering Laboratory of Integrative Utilization Technology of Eucommia Ulmoides Jishou UniversityJishou 416000China College of Biology and Environmental Science Jishou UniversityJishou 416000China Lushan Botanical Garden Jiangxi Province and Chinese Academy of SciencesLushan 332900China.

Background:Xiangxi Tujia and Miao Autonomous Prefecture,located in Hunan Province,China,is a culturally rich region with a diverse *** locals have a deep martial arts history and possess a wealth of traditional knowledge for treating ***:In order to investigate this topic,we conducted ethnobotanical studies by visiting local medicinal markets and conducting ***:We identified 43 botanical drugs used for treating bruises,categorized into four types:sprains,contusions,strains,and bone *** local people typically prefer to mash these botanical drugs freshly or make medicinal wine for external *** often involves a combination of drugs to promote blood circulation and remove blood stasis,with medications to dispel rheumatism,clear heat,and detoxify,tailored to the humid climate and high precipitation in mountainous *** on the fidelity level values,the local plant resources with high acceptance,utilization,or potential value in the treatment of bruises included Sargentodoxa cuneata,Lycopodium japonicum,Dioscorea cirrhosa,Panax japonicus,Achyranthes bidentata,Lysimachia heterogenea and so ***:Herbal medicine and related knowledge for treating bruises are diverse and rich in the Xiangxi ***,the local traditional medicinal knowledge faces challenges regarding inheritance due to regional ***,it is crucial to protect and further study this knowledge in the future.

关键词： bruises medicinal plants ethnobotany Xiangxi traditional knowledge

Metal Ions Induced Vesicle Formation of Single-Chained Hydrocarbon Surfactants with Coordinated Headgroups

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Wuhan University Journal of Natural Sciences 2005年第6期10卷 1035-1040页

作者： GUO hong-tao XU Fei gao Nan ZHOU Xiao-hai DONG Jin-feng hong Xin-lin ZHANG gao-yong College of Chemistry and Molecular Sciences Wuhan University Wuhan 430072 Hubei China

The surfactant of N-dodecyliminodipropionate disodium salt has been synthesized, and structure has been well characterized. The properties in aqueous solution have been studied by potentiometric titration, surface tension, transmission electron microscopy （TEM） and uhra-violet （UV） spectra. It was found that N-dodecyliminodipropionate disodium could exist in four species （e. g. cation, zwitterion, monoanion, dianion） in aqueous solution depending on pH,and relative distribution of these ionic species as a function of pH was obtained. The critical micelle concentration （CMC）, determined from the breakpoint of surface tension at different concentrations, is 4. 16 × 10^1 mol/L, and the surface tension at CMC is 30 mN/m. It was found that the self-aggregate structures in aqueous solution transformed from micelles to vesicles after the Cu （Ⅱ） added. The experimental results showed that coordination between the iminodipropionate group and Cu（Ⅱ） resulted to vesicles formation.

关键词： surfactant micelle vesicle metal ion iminodipropionate

柠檬酸盐法脱除SO_2过程中氧化副反应的动力学研究

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有色金属（冶炼部分） 2016年第10期 63-65,73页

作者：洪涛高萌西安建筑科技大学冶金工程学院西安710055

以低浓度二氧化硫柠檬酸盐吸收后液为对象,研究硫酸根生成速率,考察温度、柠檬酸总浓度、pH等因素的氧化副反应,探索氧化副反应机制和抑制方法。研究表明,氧化速率对柠檬酸浓度是0.5级反应,对pH是0.8级反应,对氧是0级反应;控制柠檬酸浓... 详细信息

以低浓度二氧化硫柠檬酸盐吸收后液为对象,研究硫酸根生成速率,考察温度、柠檬酸总浓度、pH等因素的氧化副反应,探索氧化副反应机制和抑制方法。研究表明,氧化速率对柠檬酸浓度是0.5级反应,对pH是0.8级反应,对氧是0级反应;控制柠檬酸浓度为1.5mol/L、pH=4.5、反应温度为95℃的条件下进行吸收解吸操作,可以使氧化副反应最小。

关键词：二氧化硫柠檬酸盐法氧化副反应动力学

Evaluation of liver functional reserve by combining D-sorbitol clearance rate and CT measured liver volume

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World Journal of Gastroenterology 2003年第9期9卷 2092-2095页

作者： Yi-Ming Li Fan Lv Xin Xu hong Ji Wen-tao gao Tuan-Jie Lei Gui-Bing Ren Zhi-Lan Bai Qiang Li General Surgery Department,the 2~(nd)Affiliated Hospital of Xi’an Jiaotong University,Xi’an 710004,ShaanXi Province,China General Surgery Department the 2nd Hospital of Xi'an Jiaotong University Xi'an 710004 ShaanXi Province China. liyiming@***

AIM: Our research attempted to evaluate the overall functional reserve of cirrhotic liver by combination of hepatic functional blood flow, liver volume, and ChildPugh′s classification, and to discuss its value of clinical ***: Ninety two patients with portal hypertension due to hepatic cirrhosis were investigated. All had a historyof haematemesis and hematochezia, esophageal and gastric fundus varices, splenomegaly and hypersplenia.A 2-year follow-up was routinely performed and no one was lost. Twenty two healthy volunteers were used as control group. Blood and urine samples were collected 4times before and after intravenous D-sorbitol *** hepatic clearance (CLH) of D-sorbitol was then calculated according to enzymatic spectrophotometric method while the total blood flow (QToTAL) and intrahepatic shunt (RINs) were detected by multicolor Doppler ultrasound, and the liver volume was measured by spiral CT. Data were estimated by t-test, variance calculation and chi-squared test. The relationships between all these parameters and different groups were investigated according to Child-Pugh classification and postoperative complications ***: Steady blood concentration was achieved 120 mins after D-sorbitol intravenous infusion, which was (0.358±0.064) mmoⅠ@L-1 in cirrhotic group and (0.189±0.05)mmol@L-1 in control group (P＜0.01). CLH=(812.7±112.4) ml@min-1,QTOTAL=(1280.6±131.4) ml@min-1, and RINS=(36.54±10.65)%in cirrhotic group and CLH=(1248.3±210.5) ***-1, QTOTAL=(1362.4-±126.9) ml@min-1, and RINS=(8.37±3.32) % in control group (P＜0.01). The liver volume of cirrhotic group was 1057±249 cm3, 851±148 cm3 and 663±77 cm3 in Child A, B and C group respectively with significant difference (P＜0.001).The average volume of cirrhotic liver in Child B, C group was significantly reduced in comparison with that in control group (P＜0.001). The patient, whose liver volume decreased by 40 % with the CLH below 600 ml@min-1, would have a higher

关键词： D-山梨醇清除率肝功能 CT检查

Real-world evidence on the efficacy and safety of vonoprazanamoxicillin dual therapy for Helicobacter pylori treatment in elderly patients

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World Journal of Gastroenterology 2025年第1期31卷 68-78页

作者： Wen gao Jing-Wen Li Hui Ye Xue-Zhi Zhang Jian-Xiang Liu hong Cheng Department of Gastroenterology Peking University First HospitalBeijing 100034China School of Medicine Tsinghua MedicineTsinghua UniversityBeijing 100034China Department of Traditional Chinese Medicine and Integrative Medicine Peking University First HospitalBeijing 100034China

BACKGROUND A dual therapy regimen containing amoxicillin is a common treatment option for the eradication of Helicobacter pylori(***).While substantial research supports the efficacy and safety of vonoprazan and amoxicillin(VA)dual therapy in the general population,there is still a lack of studies specifically focusing on its safety in elderly *** To evaluate efficacy and safety of VA dual therapy as first-line or rescue treatment for *** in elderly *** As a real-world retrospective study,data were collected from elderly patients aged 60 years and above who accepted VA dual therapy(vonoprazan 20 mg twice daily+amoxicillin 1000 mg thrice daily for 14 days)for *** eradication in the Department of Gastroenterology at Peking University First Hospital between June 2020 and January *** status was evaluated by^(13)C-urease breath test 6 weeks after *** adverse events(AEs)during treatment were *** In total,401 cases were ***-one cases were excluded due to loss to follow-up,lack of re-examination,or unwillingness to take *** total of 380 included cases comprised 250 who received VA dual therapy as first-line treatment and 130 who received VA dual therapy as rescue *** was successfully eradicated in 239 cases(95.6%)in the first-line treatment group and 116 cases(89.2%)in the rescue treatment *** overall incidence of AEs was 9.5%for both ***,9.2%of patients experienced an AE in the first-line treatment group and 10.0%in the rescue treatment *** patients discontinued treatment due to AE,with a discontinuation rate of 1.3%.No serious AE *** The VA dual therapy regimen as a first-line treatment and a rescue therapy was effective and safe for elderly patients aged 60 and older.

关键词： Helicobacter pylori Vonoprazan Amoxicillin Dual therapy Elderly

Local magnetic moment oscillation around an Anderson impurity on graphene

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Science China(Physics,Mechanics & Astronomy) 2025年第1期Mechanics & Astronomy) .卷 192-201页

作者： Shuai Li Zhen Ma Jin-Hua gao School of Science Hebei University of Science and Technology School of Electronics and Information Zhengzhou University of Light Industry School of Physics and Wuhan National High Magnetic Field Center Huazhong University of Science and Technology

We theoretically investigate the spin resolved Friedel oscillation （FO） and quasiparticle interference （QPI） in graphene induced by an Anderson *** the impurity becomes magnetic,the resulted FO becomes spin dependent,which gives rise to a local magnetic moment oscillation with an envelop decaying as r-2in real space in the doping ***,at half filling,the electron density and local magnetic moment will not oscillate but decay as *** spin resolved FO has both sublattice and spin ***,the local magnetic moment decay at half filling only occurs at one sublattice of graphene,which is quite like the phenomenon observed in the STM experiment (***ález-Herrero et al.,Science 352,437 （2016）).We further give an analytic formula about such spin dependent FO based on the stationary phase ***,we study the interference of quasiparticles around the magnetic impurity by calculating the spin dependent Fourier-transformed local density of states （FT-LDOS）.Our work gives a comprehensive understanding about the local magnetic moment oscillation around an Anderson impurity on graphene.

关键词： Friedel oscillation local magnetic moment graphene Anderson impurity