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  1. Article ; Online: Peroxymonosulfate-based catalytic degradation of reactive dyes in real wastewater by Fe/N-codoped carbocatalysts loaded on carbon cloth

    Yang, Limeng / Yang, Wenqiang / Fu, Chengyu / Li, Yujuan / Zhang, Pengfei

    Textile Research Journal. 2023 Dec., v. 93, no. 23-24 p.5317-5335

    2023  

    Abstract: This study simulated actual dyeing wastewater in dyeing factories with three types of dyeing wastewaters from laboratory cotton fabric dyeing to investigate the effects of catalyst and oxidant peroxymonosulfate (PMS) concentrations, pH level, and ... ...

    Abstract This study simulated actual dyeing wastewater in dyeing factories with three types of dyeing wastewaters from laboratory cotton fabric dyeing to investigate the effects of catalyst and oxidant peroxymonosulfate (PMS) concentrations, pH level, and temperature on dye degradation in wastewater and determine the optimal conditions for dyeing wastewater treatment accordingly. The results demonstrated that the optimal conditions varied with the reactive dyes. Specifically, the optimal oxidant PMS concentration for degrading Reactive Yellow and Reactive Blue was 0.6 g/L, and that for degrading Reactive Red was 0.4 g/L. The optimal pH level for degrading Reactive Red and Reactive Blue was around 7.0, and that for degrading Reactive Yellow was about 5.0. The activation energy of the degradation and the mineralization degree of the three dyes were also discussed. Reactive Blue showed greater activation energy (47.0 kJ/mol) and a higher mineralization degree (81% chemical oxygen demand removal) than the other two dyes under optimal disposal conditions. The Fe/N-codoped carbocatalyst loaded on carbon cloth exhibited desirable reusability and good stability for the degradation of the three dyes. Mechanisms involved in their degradation were analyzed through X-ray photoelectron spectroscopy, focusing on N species, Fe-N binding, and C=C and C–N active components in the Fe/N-codoped carbocatalyst. Electron paramagnetic resonance experiments demonstrated that both the radical and non-radical pathways were accountable for the degradation of the three dyes, primarily the non-radical pathway. This study may contribute to the application of activated PMS for practical dyeing wastewater treatment.
    Keywords X-ray photoelectron spectroscopy ; activation energy ; carbon ; catalysts ; chemical oxygen demand ; cotton fabric ; dyes ; electron paramagnetic resonance spectroscopy ; mineralization ; oxidants ; pH ; temperature ; wastewater ; wastewater treatment ; Degradation ; reactive dye ; real wastewater ; peroxymonosulfate ; carbocatalyst
    Language English
    Dates of publication 2023-12
    Size p. 5317-5335.
    Publishing place SAGE Publications
    Document type Article ; Online
    ZDB-ID 2209596-2
    ISSN 1746-7748 ; 0040-5175
    ISSN (online) 1746-7748
    ISSN 0040-5175
    DOI 10.1177/00405175231195897
    Database NAL-Catalogue (AGRICOLA)

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  2. Article ; Online: Tunable and convenient synthesis of highly dispersed Fe-N

    Yang, Limeng / Shao, Zhigang

    RSC advances

    2019  Volume 9, Issue 72, Page(s) 42236–42244

    Abstract: The development of low-cost, efficient and stable electrocatalysts for the oxygen reduction reaction (ORR) is desirable but remains a great challenge. We report a convenient and efficient synthesis approach of highly dispersed Fe- ... ...

    Abstract The development of low-cost, efficient and stable electrocatalysts for the oxygen reduction reaction (ORR) is desirable but remains a great challenge. We report a convenient and efficient synthesis approach of highly dispersed Fe-N
    Language English
    Publishing date 2019-12-19
    Publishing country England
    Document type Journal Article
    ISSN 2046-2069
    ISSN (online) 2046-2069
    DOI 10.1039/c9ra08867a
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Book ; Online ; Thesis: Nonsense-mediated decay factor SMG7 sensitizes cells to TNFα-induced apoptosis via CYLD tumor suppressor and the noncoding oncogene Pvt1 and lncRNA Adapt33

    Yang, Limeng [Verfasser] / Glaß, Rainer [Akademischer Betreuer]

    2022  

    Author's details Limeng Yang ; Betreuer: Rainer Glaß
    Keywords Medizin, Gesundheit ; Medicine, Health
    Subject code sg610
    Language English
    Publisher Universitätsbibliothek der Ludwig-Maximilians-Universität
    Publishing place München
    Document type Book ; Online ; Thesis
    Database Digital theses on the web

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  4. Article: The effects of cotton cellulose on both energy band gap of g-C3N4–TiO2 nanoparticles and enhanced photocatalytic properties of cotton-g-C3N4–TiO2 composites

    Li, Wenjun / Zhang, Hui / Chen, Wendou / Yang, Limeng / Wu, Hailiang / Mao, Ningtao

    Cellulose. 2022 Jan., v. 29, no. 1

    2022  

    Abstract: To recycle powdered photocatalysts and make full use of their active sites, one efficient way is to load these particles on the supporting materials. It is demonstrated that the supports are beneficial because they adsorb organic pollutants to be ... ...

    Abstract To recycle powdered photocatalysts and make full use of their active sites, one efficient way is to load these particles on the supporting materials. It is demonstrated that the supports are beneficial because they adsorb organic pollutants to be degraded. However, the effect of the supports on the energy band structure of the generated composite photocatalysts remains unclear. In this study, a heterojunction composed of graphitic carbon nitride (g-C₃N₄) and TiO₂ (g-C₃N₄–TiO₂) was constructed and simultaneously immobilized on the surface of cotton fibers in a one-step hydrothermal process. The structural characteristics and photocatalytic performance of the g-C₃N₄–TiO₂ modified cotton fibers (C–g-C₃N₄–TiO₂) were systematically examined. It was found that g-C₃N₄ nanosheets were combined with as-synthesized TiO₂ nanoparticles during the hydrothermal reaction to form an intimate heterojunction, which was chemically grafted onto cotton fibers via C/O–Ti⁴⁺/Ti³⁺ bonds. Meanwhile, TiO₂ nanoparticles were introduced into the swollen cotton fibers. Most notably, the cellulosic cotton substrates could increase the energy band gap of g-C₃N₄–TiO₂ nanocomposites, as demonstrated by the density functional theory (DFT) calculations. The reaction order of radical species (·O₂⁻ > ¹O₂ > ·OH > h⁺) did not change during MO photodegradation no matter whether the g-C₃N₄–TiO₂ was loaded on cotton fibers. The self-cleaning experiments showed that g-C₃N₄–TiO₂ modified cotton fabrics could be repeatedly used to remove organic contaminants.
    Keywords carbon nitride ; cellulose ; density functional theory ; energy ; graphene ; nanocomposites ; nanosheets ; photocatalysis ; photocatalysts ; photolysis
    Language English
    Dates of publication 2022-01
    Size p. 193-212.
    Publishing place Springer Netherlands
    Document type Article
    ZDB-ID 1496831-9
    ISSN 1572-882X ; 0969-0239
    ISSN (online) 1572-882X
    ISSN 0969-0239
    DOI 10.1007/s10570-021-04318-3
    Database NAL-Catalogue (AGRICOLA)

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  5. Article: Robust self-cleaning effects of cotton fabrics coated with reduced graphene oxide (RGO)-titanium dioxide (TiO₂) nanocomposites

    Li, Wenjun / Zhang, Hui / Chen, Tianyu / Yang, Limeng / Sheng, Cuihong / Wu, Hailiang / Mao, Ningtao

    Textile research journal. 2022 Mar., v. 92, no. 5-6

    2022  

    Abstract: The self-cleaning textiles coated with reduced graphene oxide-titanium dioxide (TiO₂) nanocomposites have enhanced photocatalytic activities and could have great potential in practical applications. However, it is still problematic regarding how to avoid ...

    Abstract The self-cleaning textiles coated with reduced graphene oxide-titanium dioxide (TiO₂) nanocomposites have enhanced photocatalytic activities and could have great potential in practical applications. However, it is still problematic regarding how to avoid aggregation of reduced graphene oxide nanosheets in producing reduced graphene oxide-TiO₂ nanocomposites. In this research article, we propose a new method to reduce the aggregation of reduced graphene oxide nanosheets in producing cotton fabrics coated with reduced graphene oxide-TiO₂ nanocomposites by combining vibration-assisted ball milling and hydrothermal synthesis process. The microstructure and photocatalytic-related properties of the resultant reduced graphene oxide-TiO₂ nanocomposites and their coating cotton fabrics were characterized by using a series of techniques including field emission scanning electron microscope (FESEM), atomic force microscope (AFM), X-ray diffraction spectroscopy (XRD), Raman, particle size distribution, Brunauer-Emmett-Teller,(BET), transmission electron microscope (TEM), X-ray photoelectron spectrometer (XPS), diffuse reflectance spectra (DRS), ultraviolet photoelectron spectroscope (UPS), and photoluminescence (PL). It was indicated that the aggregation of reduced graphene oxide nanosheets in reduced graphene oxide-TiO₂ nanocomposites was successfully avoided via ball milling in the presence of tetrabutyl titanate. After hydrothermal treatment, the resulting reduced graphene oxide-TiO₂ nanocomposites were firmly immobilized on cotton fabric. It was demonstrated in the self-cleaning experiments that the resultant self-cleaning cotton fabrics are hydrophilic and could directly decompose color contaminants such as methylene blue, Congo red, and coffee stains under simulated sunlight irradiation due to the photo-degradation reactions of the reduced graphene oxide-TiO₂ nanocomposite coating. The reduced graphene oxide-TiO₂ nanocomposite-modified cotton fabric also exhibited excellent performance in both robust abrasion resistance and soap-washing resistance. The fabric photocatalytic self-cleaning capability was not found to decrease significantly after being repeatedly used for five times.
    Keywords X-ray diffraction ; X-ray photoelectron spectroscopy ; abrasion resistance ; atomic force microscopy ; color ; cotton ; cotton fabric ; graphene ; graphene oxide ; hot water treatment ; hydrophilicity ; irradiation ; lighting ; methylene blue ; microstructure ; nanocomposites ; nanosheets ; particle size distribution ; photocatalysis ; photoluminescence ; photolysis ; reflectance ; research ; transmission electron microscopes
    Language English
    Dates of publication 2022-03
    Size p. 739-759.
    Publishing place SAGE Publications
    Document type Article
    ZDB-ID 2209596-2
    ISSN 1746-7748 ; 0040-5175
    ISSN (online) 1746-7748
    ISSN 0040-5175
    DOI 10.1177/00405175211026534
    Database NAL-Catalogue (AGRICOLA)

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  6. Article ; Online: Post-synthetic Chemical Fixation of Fe

    Xu, Wenli / Yang, Limeng / Li, Liangjun / Shao, Junwei / Liu, Tao / Xing, Tao / Wang, Muzhou / Li, Zhi / Wu, Mingbo

    Chemistry, an Asian journal

    2023  Volume 18, Issue 7, Page(s) e202300016

    Abstract: The construction of efficient non-precious metal electrocatalysts for oxygen reduction reaction (ORR) with controlled structures and active sites is of fundamental importance for the wide utilization of hydrogen fuel cells. Herein, we report a ... ...

    Abstract The construction of efficient non-precious metal electrocatalysts for oxygen reduction reaction (ORR) with controlled structures and active sites is of fundamental importance for the wide utilization of hydrogen fuel cells. Herein, we report a controllable chemical fixation strategy that enables the simultaneous optimization in both of local and external structure of the Fe-N-C catalyst. The post-synthetic single-atomic chemical fixation of Fe
    Language English
    Publishing date 2023-03-03
    Publishing country Germany
    Document type Journal Article
    ZDB-ID 2233006-9
    ISSN 1861-471X ; 1861-4728
    ISSN (online) 1861-471X
    ISSN 1861-4728
    DOI 10.1002/asia.202300016
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  7. Article ; Online: Clinical Outcomes of Minimally Invasive Fixation with Pre-Bent Elastic Stable Intramedullary Nails for the Treatment of Distal Radius Metaphyseal Diaphysis Junction Fractures in Children.

    Yang, Limeng / Wang, Shuqin / Xu, Jindi / Deng, Changzong / Wang, Kai / Li, Qing / Zhou, Hua / Ruan, Hongfeng / Zhuang, Wei

    Orthopaedic surgery

    2023  Volume 15, Issue 12, Page(s) 3223–3230

    Abstract: Objective: Although mini-plate fixation is an attractive treatment option for distal radius metaphyseal diaphysis junction (DRMDJ) fractures in children, the benefits of minimally invasive fixation (MIF) with pre-bent elastic stable intramedullary nails ...

    Abstract Objective: Although mini-plate fixation is an attractive treatment option for distal radius metaphyseal diaphysis junction (DRMDJ) fractures in children, the benefits of minimally invasive fixation (MIF) with pre-bent elastic stable intramedullary nails (MIF) remain underexplored. Therefore, this study aimed to evaluate the clinical efficacy of MIF administration in children with DRMDJ fractures.
    Methods: This retrospective study enrolled 40 patients with DRMDJ fractures who underwent MIF or mini-plate fixation from January 2016 to January 2021. Radiographic parameters, such as palmar inclination and ulnar deflection angle, were examined postoperatively to assess the anatomical reduction of the wrist joint. Clinical outcomes, including the range of wrist flexion and back extension, were examined to analyze the recovery of the wrist range of motion. Additionally, the Gartland-Werley scoring system was used to assess the recovery status of wrist function and healing condition. The student t-test and χ
    Results: All included patients successfully underwent the operation and were followed up for 12-24 months. Patients in the MIF group had a smaller surgical incision length (0.49 ± 0.06 cm) compared to those in the mini-plate fixation group (4.41 ± 0.73 cm) (t = 22.438, p = 0.000). Palmar inclination and ulnar deflection were within the normal range in patients of both groups, and the fractures were successfully anatomically reduced. Moreover, wrist flexion and back extension in the MIF group and mini-plate group were (72.50° ± 0.64° vs. 70.18° ± 0.56°) and (59.55° ± 1.75° vs. 60.04° ± 1.37°), and differences were statistically significant (t = 2.708, p = 0.010 and t = 0.885, p = 0.382, respectively). Furthermore, MIF treatment resulted in a higher proportion of excellent Gartland-Werley scores (94.44%) than mini-plate fixation (86.36%) (p = 0.390). In addition, one case in the mini-plate fixation group experienced re-fracture following the removal of the internal fixation, and the fracture healed after reduction and cast fixation. All patients achieved satisfactory bone healing without other complications.
    Conclusion: Compared with mini-plate fixation, MIF has the advantages of small incision length, superior range of motion of thr wrist joint, and better maintenance of the physiological radian, providing a promising approach for clinical and surgical treatment of DRMDJ fractures.
    MeSH term(s) Humans ; Child ; Diaphyses/surgery ; Retrospective Studies ; Radius ; Radius Fractures/diagnostic imaging ; Radius Fractures/surgery ; Fracture Fixation, Intramedullary/methods ; Fracture Fixation, Internal/methods ; Treatment Outcome ; Bone Plates ; Range of Motion, Articular
    Language English
    Publishing date 2023-10-25
    Publishing country Australia
    Document type Journal Article
    ZDB-ID 2503162-4
    ISSN 1757-7861 ; 1757-7853 ; 1757-7861
    ISSN (online) 1757-7861 ; 1757-7853
    ISSN 1757-7861
    DOI 10.1111/os.13919
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  8. Article ; Online: Identifying coronary artery bypass grafting patients at high risk for adverse long-term prognosis using serial health-related quality of life assessments.

    Wang, Juncheng / Liu, Hanning / Yue, Chao / Yang, Limeng / Yang, Kai / Zhao, Yan / Ren, Huan / Zhang, Ying / Zheng, Zhe

    Chinese medical journal

    2023  Volume 137, Issue 9, Page(s) 1069–1077

    Abstract: Background: Patients who undergo coronary artery bypass grafting (CABG) are known to be at a significant risk of experiencing long-term adverse events, emphasizing the importance of regular assessments. Evaluating health-related quality of life (HRQoL) ... ...

    Abstract Background: Patients who undergo coronary artery bypass grafting (CABG) are known to be at a significant risk of experiencing long-term adverse events, emphasizing the importance of regular assessments. Evaluating health-related quality of life (HRQoL) serves as a direct method to gauge prognosis. Our objective is to ascertain the prognostic significance of consecutive HRQoL assessments using the Physical Component Summary (PCS) and Mental Component Summary (MCS) derived from the Short-Form 36 (SF-36) health survey in CABG patients.
    Methods: The study population consisted of 433 patients who underwent isolated elective CABG at Fuwai Hospital between 2012 and 2013. SF-36 assessments were conducted during both the hospitalization period and follow-up. The primary endpoint of the study was all-cause mortality, while the secondary outcome was a composite measure including death, myocardial infarction, stroke, and repeat revascularization. We assessed the relationships between the PCS and MCS at baseline, as well as their changes during the first 6 months after the surgery (referred to as ΔPCS and ΔMCS, respectively), and the observed outcomes.
    Results: The patients were followed for an average of 6.28 years, during which 35 individuals (35/433, 8.1%) died. After adjusting for clinical variables, it was observed that baseline MCS scores (hazard ratio [HR] for a 1-standard deviation [SD] decrease, 1.57; 95% confidence interval [CI], 1.07-2.30) and ΔMCS (HR for a 1-SD decrease, 1.67; 95% CI, 1.09-2.56) were associated with all-cause mortality. However, baseline PCS scores and ΔPCS did not exhibit a significant relationship with all-cause mortality. Notably, there was a dose-response relationship observed between ΔMCS and the likelihood of all-cause mortality (HRs for the 2nd, 3rd and 4th quartiles compared to the 1st quartile, 0.33, 0.45 and 0.11, respectively).
    Conclusions: Baseline MCS and changes in MCS were independent predictors for long-term mortality of CABG. Better mental health status and recovery indicated better prognosis.
    MeSH term(s) Humans ; Coronary Artery Bypass/adverse effects ; Quality of Life ; Male ; Female ; Middle Aged ; Aged ; Prognosis
    Language English
    Publishing date 2023-08-24
    Publishing country China
    Document type Journal Article
    ZDB-ID 127089-8
    ISSN 2542-5641 ; 0366-6999 ; 1002-0187
    ISSN (online) 2542-5641
    ISSN 0366-6999 ; 1002-0187
    DOI 10.1097/CM9.0000000000002806
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  9. Article ; Online: Photocatalytic mechanism and performance of a novel wool flake-BiFeO

    Chen, Tianyu / Zhang, Hui / Han, Ye / Gu, Haoshuai / Yang, Limeng / Wu, Hailiang / Mao, Ningtao

    Nanotechnology

    2021  Volume 32, Issue 27

    Abstract: In this study, ... ...

    Abstract In this study, BiFeO
    Language English
    Publishing date 2021-04-12
    Publishing country England
    Document type Journal Article
    ZDB-ID 1362365-5
    ISSN 1361-6528 ; 0957-4484
    ISSN (online) 1361-6528
    ISSN 0957-4484
    DOI 10.1088/1361-6528/abf072
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  10. Article ; Online: Liquiritigenin alleviates doxorubicin-induced chronic heart failure via promoting ARHGAP18 and suppressing RhoA/ROCK1 pathway.

    Xu, Zhibing / Hu, Zongde / Xu, Hanchen / Zhang, Lifen / Li, Liang / Wang, Yi / Zhu, Yuanqing / Yang, Limeng / Hu, Dan

    Experimental cell research

    2022  Volume 411, Issue 2, Page(s) 113008

    Abstract: Chronic heart failure (CHF) is one of the most common chronic diseases with increasing incidence and mortality. Liquiritigenin (LQG) is shown to protect mice from cardiotoxicity. However, its underlying mechanism remains unclear. Our study aimed to ... ...

    Abstract Chronic heart failure (CHF) is one of the most common chronic diseases with increasing incidence and mortality. Liquiritigenin (LQG) is shown to protect mice from cardiotoxicity. However, its underlying mechanism remains unclear. Our study aimed to reveal the role of ARHGAP18 in LQG-mediated cardioprotective effects in CHF. In the current study, CHF cell model and rat model were established by the application of doxorubicin (DOX). The reactive oxygen species (ROS) level and cell apoptosis were determined by flow cytometry. The cardiac function of rats was evaluated by measuring left ventricular systolic pressure, left ventricular end diastolic pressure, and serum level of lactate dehydrogenase and brain natriuretic peptide. The expression of active RhoA was elevated and that of ARHGAP18 was decreased in DOX-induced CHF cell model. ARHGAP18 could reduce DOX-induced RhoA activation, ROS elevation, and cell apoptosis. Meanwhile, the knockdown of ARHGAP18 could promote the activation of RhoA, the level of ROS, and the rate of cell apoptosis, which could be reversed by the application of RhoA inhibitor. LQG promoted the expression of ARHGAP18 and exerted similar effects of ARHGAP18 in CHF cell model. The application of LQG could also reverse the effects mediated by ARHGAP18 knockdown. Moreover, LQG significantly improved cardiac function and ameliorated DOX-induced cardiotoxicity of CHF rats. In conclusion, LQG could alleviate DOX-induced CHF via promoting ARHGAP18 and suppressing RhoA/ROCK1 pathway. LQG was a potential agent for CHF treatment.
    MeSH term(s) Animals ; Apoptosis/drug effects ; Cell Line ; Chronic Disease ; Disease Models, Animal ; Down-Regulation ; Doxorubicin/toxicity ; Flavanones/pharmacology ; GTPase-Activating Proteins/antagonists & inhibitors ; GTPase-Activating Proteins/genetics ; GTPase-Activating Proteins/metabolism ; Gene Knockdown Techniques ; Glycyrrhiza/chemistry ; Heart Failure/chemically induced ; Heart Failure/drug therapy ; Heart Failure/metabolism ; Medicine, Chinese Traditional ; Plants, Medicinal ; Rats ; Reactive Oxygen Species/metabolism ; Signal Transduction/drug effects ; rho GTP-Binding Proteins/antagonists & inhibitors ; rho GTP-Binding Proteins/metabolism ; rho-Associated Kinases/antagonists & inhibitors ; rho-Associated Kinases/metabolism
    Chemical Substances Flavanones ; GTPase-Activating Proteins ; Reactive Oxygen Species ; Doxorubicin (80168379AG) ; ROCK1 protein, rat (EC 2.7.11.1) ; rho-Associated Kinases (EC 2.7.11.1) ; RhoA protein, rat (EC 3.6.5.2) ; rho GTP-Binding Proteins (EC 3.6.5.2) ; liquiritigenin (T194LKP9W6)
    Language English
    Publishing date 2022-01-04
    Publishing country United States
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 1493-x
    ISSN 1090-2422 ; 0014-4827
    ISSN (online) 1090-2422
    ISSN 0014-4827
    DOI 10.1016/j.yexcr.2022.113008
    Database MEDical Literature Analysis and Retrieval System OnLINE

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