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Construction of Cu―Ni Atomic Pair with Bimetallic Atom-Cluster Sites for Enhanced CO2 Electroreduction

ADVANCED FUNCTIONAL MATERIALS 2024年第34期34卷

作者： Chang, Fangfang Zhu, Kai Liu, Chenhong Wei, Juncai Yang, shuwen Zhang, Qing Yang, lin Wang, Xiaolei Bai, Zhengyu Henan Normal Univ Sch Chem & Chem Engn Key Lab Green Chem Media & React Minist EducCollaborat Innovat Ctr Henan Prov Gree Xinxiang 453007 Henan Peoples R China Univ Alberta Dept Chem & Mat Engn Edmonton AB T6G 1H9 Canada

Developing atomically dispersed metal on nitrogen-doped carbon (M & horbar;N & horbar;C) catalyst provides a promising strategy to convert CO2 into high-valued chemicals and achieve artificially closed carbon cycles. However, it is challenging to tune the structure and coordination of N & horbar;M bond that further improve the intrinsic activity and selectivity of CO2RR. Herein, CuNi atomic clusters embedded in Ni/Cu dual atomic sites catalysts (CuNiAC@Ni/Cu & horbar;N & horbar;C) are designed and successfully manipulated to regulate the coordination environment for M & horbar;N & horbar;C catalysts to enhance the CO2 electroreduction reaction (CO2RR). The most active configuration in CuNiAC@Ni/Cu & horbar;N & horbar;C catalyst is CuNi atomic cluster connected with 2N-bridged (Ni-Cu)N-5, in which two N atoms are shared with NiN4 and CuN3 moieties verified by both systematic advanced characterizations and density function theory (DFT) calculations. The results have revealed the integration between CuNi atomic cluster and N4Ni/CuN3 dual-metal atomic sites that optimize the electronic redistribution and narrow the bandgap, thereby decreasing the energy barrier of the potential determination step and promoting CO production.

关键词： activity atomic clusters CO2 reduction reaction nanocatalyst selectivity

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Tailoring Polymorph, Crystal Orientation, and Large-Scale Alignment in Conjugated Polymers via Rubbing for Field-Effect Transistors

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MACROMOLECULES 2024年第6期57卷 2669-2678页

作者： Zheng, Hao Chen, shuwen Li, Dingke Dong, Yongjie Guo, Yanan Li, lin Zhan, Hao Luo, Xuebing Peng, Juan Fudan Univ Dept Macromol Sci State Key Lab Mol Engn Polymers Shanghai 200438 Peoples R China

The ability to tune the polymorph and crystal orientation of semiconducting conjugated polymers provides a powerful platform for revealing processing-structure-property relationships. In contrast to the widely studied poly(3-alkylthiophene)s, their close poly(3-alkylselenophene) analogs have been much less studied. Herein, we report tailoring the polymorphs and crystal orientations in poly(3-hexylselenophene) (P3HS) of different molecular weights (MWs) via rubbing and elucidate the relationships between the crystalline structure and charge transfer characteristics for organic field-effect transistors (OFETs). In particular, the as-cast P3HS-3K film exhibits polymorph II with a dominant flat-on crystal orientation;however, it transforms into polymorph I with a face-on crystal orientation upon rubbing at elevated temperatures. Moreover, the as-cast P3HS-22K film transitions from edge-on to face-on with its polymorph I retained throughout the rubbing process. The polymorph and crystal orientation transitions in the P3HS-3K and 22K systems are accompanied by the formation of large-scale highly aligned crystalline films along the rubbing direction. The polymorph transformation kinetics during the rubbing process and associated alterations in the crystalline packing and photophysical properties are investigated. The various P3HS films exhibit OFET performance that shows a strong relationship with the attained crystalline structures. Such polymorph and crystal orientation transformations involving the rubbing technique are readily applied to other conjugated polymers in interest. This research emphasizes tailoring the crystalline structures and, thus, the charge transfer characteristics of conjugated polymers, which advances their use in optoelectronic-device applications.

关键词： Charge transport Conjugated polymers Crystal structure Crystals Thin films

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Four kinds of capping materials for controlling phosphorus and nitrogen release from contaminated sediment using a static simulation experiment

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Frontiers of Environmental Science & Engineering 2022年第3期16卷 25-33页

作者： Zhenming Zhou Canyang lin shuwen Li Shupo Liu Fei Li Baoling Yuan College of Civil Engineering Huaqiao UniversityXiamen 361021China

We determined the effects of quartz sand(QS),water treatment plant sludge(WTPS),aluminum-based P-inactivation agent(Al-PIA),and lanthanum-modified bentonite(LMB)thin-layer capping on controlling phosphorus and nitrogen release from the sediment,using a static simulation *** sediment in the experiment was sampled from Yundang Lagoon(Xiamen,Fujian Province,China),which is a eutrophic *** total phosphorus(TP),ammonium nitrogen(NH4+-N),and total organic carbon(TOC)levels in the overlying water were measured at regular intervals,and the changes of different P forms in WTPS,Al-PIA,and sediment of each system were analyzed before and after the *** average TP reduction rates of LMB,Al-PIA,WTPS,and QS were 94.82,92.14,86.88,and 10.68%,respectively,when the release strength of sediment TP was 2.26–9.19 mg/(m^(2)·d)and the capping strength of the materials was 2 kg/m^(2).Thin-layer capping of LMB,WTPS,and Al-PIA could effectively control P release from the sediment(P<0.05).However,thin-layer capping of LMB,Al-PIA,and QS did not significantly reduce the release of ammonium N and organic matter(P>0.05).Based on our results,LMB,Al-PIA,and WTPS thin-layer capping promoted the migration and transformation of easily released P in *** P adsorbed by WTPS and Al-PIA mainly occurred in the form of NAIP.

关键词： Sediment Eutrophication Thin-layer capping Phosphorus Nitrogen Aluminum-based P-inactivation agent

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A co-assembly process for high strength and injectable dual network gels with sustained doxorubicin release performance

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SOFT MATTER 2024年第29期20卷 5788-5799页

作者： Zhao, Chengcheng Wang, Yanyao Li, Mingtao Wang, lin Lou, shuwen Shi, Bofang Rao, Yongfang Yan, Wei Yang, Honghui Xi An Jiao Tong Univ Sch Chem Xian Key Lab Sustainable Energy Mat Chem Xian 710049 Peoples R China Air Force Med Univ Sch Biomed Engn Shaanxi Prov Key Lab Bioelectromagnet Detect & Int Xian 710032 Peoples R China Xi An Jiao Tong Univ Dept Environm Sci & Engn State Key Lab Multiphase Flow Power Engn Xian 710049 Peoples R China Xi An Jiao Tong Univ Affiliate Hosp 1 Xian 710049 Peoples R China Hangzhou Entel Foreign Language Sch Hangzhou 311122 Peoples R China

Adopting a non-covalent co-assembly strategy shows great potential in loading drugs efficiently and safely in drug delivery systems. However, finding an efficient method for developing high strength gels with thixotropic characteristics is still challenging. In this work, by hybridizing the low molecular weight gelator fluorenylmethyloxycarbonyl-phenylalanine (Fmoc-F) (first single network, 1st SN) and alginate (second single network, 2nd SN) into a dual network (DN) gel, gels with high strength as well as thixotropy were prepared efficiently. The DN gels showed high strength (103 Pa in SN gels and 105 Pa in DN gels) and thixotropic characteristics (yield strain <25%;recovery ratio >85% within 100 seconds). The application performance was verified by loading doxorubicin (DOX), showing better encapsulation capacity (77.06% in 1st SN, 59.11% in 2nd SN and 96.71% in DN) and sustained release performance (lasting one week under physiological conditions) than single network gels. Experimental and DFT results allowed the elaboration of the specific non-covalent co-assembly mechanism for DN gel formation and DOX loading. The DN gels were formed by co-assembly driven by H-bond and pi-pi stacking interactions and then strengthened by Ca2+-coupling. Most DOX molecules co-assembled with Fmoc-F and alginate through pi-pi stacking and H-bond interactions (DOX-I), with a few free DOX molecules (DOX-II) left. Proven by the release dynamics test, DOX was released through a diffusion-erosion process, in an order of DOX-I first and then DOX-II. This work suggests that non-covalent co-assembly is a useful technique for effective material strengthening and drug delivery.

关键词： Gels

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Advances of Amifostine in Radiation Protection: Administration and Delivery

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MOLECULAR PHARMACEUTICS 2023年第11期20卷 5383-5395页

作者： Ji, Lihua Cui, Pengfei Zhou, shuwen Qiu, lin Huang, Hai Wang, Cheng Wang, Jianhao Changzhou Univ Sch Pharm Changzhou 213164 Jiangsu Peoples R China Changzhou Univ Sch Petr & Chem Engn Changzhou 213164 Jiangsu Peoples R China

Amifostine (AMF, also known as WR-2721) is the only approved broad-spectrum small-molecule radiation protection agent that can combat hematopoietic damage caused by ionizing radiation and is used as an antitumor adjuvant and cell protector in cancer chemotherapy and radiotherapy. Amifostine is usually injected intravenously before chemotherapy or radiotherapy and has been used in the treatment of head and neck cancer. However, the inconvenient intravenous administration and its toxic side effects such as hypotension have severely limited its further application in clinic. In order to reduce the toxic and side effects, scientists are trying to develop a variety of drug administration methods and are devoted to developing a wide application of amifostine in radiation protection. This paper reviews the research progress of amifostine for radiation protection in recent years, discusses its mechanism of action, clinical application, and other aspects, with focus on summarizing the most widely studied amifostine injection administration and drug delivery systems, and explored the correlation between various administrations and drug efficacies.

关键词： amifostine cancer radiation protection administration drug delivery system

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Oxygen vacancies rich in indium oxide hollow prism-like nanoflowers derived from NH2-MIL-68 (In) for promoted triethylamine sensing

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SENSORS AND ACTUATORS B-CHEMICAL 2024年 402卷

作者： Miao, Jinwei Fan, Yongbo Zhu, shuwen Li, Xiaomin Lei, lin Yan, Kang Zheng, Shiqi Wang, Weijia Fan, Huiqing Northwestern Polytech Univ Sch Mat Sci & Engn State Key Lab Solidificat Proc Xian 710072 Peoples R China Northwestern Polytech Univ Inst Flexible Elect Frontiers Sci Ctr Flexible Elect Xian 710072 Peoples R China Univ Sheffield Dept Mat Sci & Engn Sheffield S1 3JD England

Triethylamine (TEA) is widely viewed as the toxic volatile organic compounds and causes a severe risk to environmental protection and human health. However, the current sensors are still unable to meet the growing demand for effective and reliable detection of TEA gas. Herein, a newly designed TEA sensor based on In2O3 prism-like nanoflowers with hollow mesoporous structure is designed by directly calcining NH2-MIL-68 (In) in air atmosphere. A series of analytical techniques are performed such as BET, XPS, UV-vis, PL, EPR and Hall effect measurements. All the characterization results prove that the In2O3-400 prepared by annealing NH2-MIL-68 at 400 degrees C exhibits the maximum concentration of oxygen vacancies, the highest specific surface area, and excellent electron mobility, resulting in the best performance toward TEA. The prepared In2O3-400-based sensors possess ultrahigh response of 684.32 when exposed to 7 ppm TEA at 100 degrees C and exhibit a minimum detection limit of 0.046 ppb. The remarkable performance makes the sensors based on In2O3-400 prism-like nanoflowers become a very competitive sensing material for the detection of trace TEA vapor. The excellent selectivity, repeatability and long-term stability ensure the actual application of the prepared sensors.

关键词： Gas sensor Triethylamine Mental organic framework Oxygen vacancies

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Association between albumin-to-globulin ratio and the risk of overall survival in advanced non-small cell lung cancer patients with anlotinib treatment: a retrospective cohort study

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BMC PULMONARY MEDICINE 2023年第1期23卷 1-10页

作者： Chen, Jinzhan Xie, Congyi Yang, Yimin Yang, shuwen Huang, Jinxian Ye, Feiyang lin, Zhenyang Tong, lin Liu, Jiaxin Fudan Univ Zhongshan Hosp Xiamen Dept Pulm Med Xiamen 361000 Fujian Peoples R China Xiamen Clin Res Ctr Canc Therapy Xiamen 361000 Fujian Peoples R China Fudan Univ Zhongshan Hosp Dept Vasc Surg Shanghai 200032 Peoples R China Fuzhou Univ Coll Comp & Data Sci Fuzhou 350108 Fujian Peoples R China Fudan Univ Zhongshan Hosp Xiamen Dept Thorac Surg Xiamen 361000 Fujian Peoples R China Fudan Univ Zhongshan Hosp Dept Pulm & Crit Care Med Shanghai 200032 Peoples R China

ObjectiveResearches about the association between serum albumin-to-globulin ratio (AGR) and the prognosis of lung cancer are limited. We aimed to investigate the relationship between AGR and overall survival (OS) in patients with advanced non-small-cell lung cancer (NSCLC) treated with *** retrospective cohort study was conducted on 196 advanced NSCLC patients with anlotinib treatment between June 1, 2018 and June 1, 2021. The exposure was AGR, calculated by baseline serum albumin / (serum total protein - serum albumin). The outcome was OS, defined as the period from the date of initial treatment with anlotinib to death or the last follow-up. The univariate and multivariate linear regression models and generalized additive models (GAM) were used to analyze the relationship between AGR and OS. The Kaplan-Meier method was used to analyze the *** adjusting for potential confounders, a non-linear relationship was observed between AGR and OS, which had an inflection point of 1.24. The hazard ratio and the confidence intervals on the left and the right sides of the inflection point were 13.05 (0.52 to 327.64) and 0.20 (0.07 to 0.57), respectively. It suggested that AGR was positively associated with OS when AGR was larger than 1.24, for every 1 unit increase in AGR, the risk of death lowered approximately by 80%.ConclusionsThe relationship between AGR and the OS for advanced NSCLC patients with anlotinib is non-linear. AGR level is an independent protective factor for OS in advanced NSCLC patients who received anlotinib therapy.

关键词： Lung cancer Anlotinib Albumin Globulin Overall survival

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Co-seismic landslides susceptibility evaluation of Bayesian random forest considering InSAR deformation: a case study of the Luding Ms6.8 earthquake

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GEOMATICS NATURAL HAZARDS & RISK 2024年第1期15卷

作者： lin, Qiang Zhang, Zhihua Yang, Zhenghua Zhang, Xinxiu Rong, Xing Yang, shuwen Hao, Yuan Zhu, Xinyu Wang, Wei Lanzhou Jiaotong Univ Lanzhou Peoples R China Natl Local Joint Engn Res Ctr Technol & Applicat N Lanzhou Peoples R China Gansu Prov Engn Lab Natl Geog State Monitoring Lanzhou Peoples R China

Strong earthquakes can frequently trigger a large number of co-seismic landslides. Obtaining an accurate susceptibility map of co-seismic landslides is crucial for post-disaster rescue and reconstruction efforts. In this study, the pre-seismic average annual surface deformation rate of the study area was obtained using Small Baseline Subset Interferometric Synthetic Aperture Radar (SBAS-InSAR) technology. Furthermore, the landslide hazards prior to the earthquake in multiple locations within the study area were analyzed. Subsequently, the deformation data was combined with 11 evaluation factors, including the distance to the fault and the Peak Ground Acceleration (PGA), to model the susceptibility of landslides. We constructed four models to evaluate the susceptibility of landslides in the study area: the Bayesian optimization random forest (BO-RF) model, the random forest model (RF), the logistic regression model (LR), and the support vector machine model (SVM). The BO-RF model outperformed the other models, achieving an AUC value of 0.984, an accuracy of 0.952, a precision of 0.953, a recall of 0.952, and an F1 score of 0.953. Furthermore, incorporating pre-seismic deformation features in the evaluation of co-seismic landslide susceptibility can effectively improve the reliability of model predictions, as compared to the evaluation model results without incorporating deformation factors. The obtained research results provide valuable data support for the rescue and management of disaster-stricken areas.

关键词： Co-seismic landslides SBAS-InSAR BO-RF susceptibility assessment machine learning

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Spectra-phenology integration for high-resolution, accurate, and scalable mapping of foliar functional traits using time-series Sentinel-2 data

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REMOTE SENSING OF ENVIRONMENT 2024年 305卷

作者： Liu, shuwen Wang, Zhihui lin, Ziyu Zhao, Yingyi Yan, Zhengbing Zhang, Kun Visser, Marco Townsend, Philip A. Wu, Jin Univ Hong Kong Sch Biol Sci Pokfulam Hong Kong Peoples R China Guangdong Acad Sci Guangzhou Inst Geog Guangdong Prov Key Lab Remote Sensing & Geog Infor Guangdong Open Lab Geospatial Informat Technol & A Guangzhou 510070 Peoples R China Chinese Acad Sci Inst Bot State Key Lab Vegetat & Environm Change Xiangshan Beijing 100093 Peoples R China Leiden Univ Inst Environm Sci Einsteinweg 2 NL-2333 CC Leiden Netherlands Univ Wisconsin Madison Dept Forest & Wildlife Ecol 1630 Linden Dr Madison WI 53706 USA Univ Hong Kong Inst Climate & Carbon Neutral Pokfulam Hong Kong Peoples R China

Foliar functional traits are essential for understanding plant adaptation strategies and ecosystem function. Due to limited in-situ observational data, there is a growing interest in upscaling these traits from field sites to regional and global levels. However, limitations persist: (1) global/national scale upscaling that relies on plant functional type (PFT) maps, environmental variables or coarse resolution multispectral images, which fail to capture localscale trait variability;(2) airborne imaging spectroscopy that enables high-resolution and accurate mapping but is restricted to site scale and is costly;and (3) multispectral satellites like Sentinel-2 that offer global coverage but have limited spectral bands and resolution. While previous research has demonstrated the connection between traits and vegetation phenology, our study seeks to build upon this foundation by further exploring the integration of phenological information for large-scale trait prediction. We examined the integration of Sentinel-2 data with its time series (for phenology information) to map 12 foliar functional traits across 14 National Ecological Observatory Network (NEON) sites in the eastern United States. Our results show that time-series Sentinel-2 models effectively capture the variance in these 12 traits (R2 = 0.60-0.80) when compared with benchmark trait data generated by state-of-the-art airborne imaging spectroscopy. The models adequately capture considerable trait variations observed within sites and PFTs. Our approach outperforms existing methods that rely on environmental variables, or a single Sentinel-2 image as predictors across examined NEON sites in eastern United States. Interestingly, including environmental variables in our models does not significantly improve predictive power. Further analysis reveals that a 'fast-slow' principal axis predominantly explains the covariation in Enhanced Vegetation Index amplitude (a proxy for leaf longevity), leaf mass per area, and

关键词： Plant traits Sentinel-2 Time-series NEON Machine learning Leaf economics spectrum

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High Performance Capacitive Deionization Cathode of Nickel Hexacyanoferrate Doped with Trace Molybdenum: Breaking the Capacity-Stability Trade-Off

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ANGEWANDTE CHEMIE-INTERNATIONAL EDITION 2025年第26期64卷 e202504775页

作者： Wang, Shiyong Lei, Yuhao Wang, Gang Zhao, lin Shen, Xiaoyan Li, Sheng Du, shuwen Yang, Chen Qiu, Jieshan Dongguan Univ Technol Res Ctr Ecoenvironm Engn Sch Environm & Civil Engn Dongguan 523106 Guangdong Peoples R China Beijing Univ Chem Technol Coll Chem Engn Beijing 100029 Peoples R China

Nickel hexacyanoferrate (NiHCF) is considered one of the most promising electrode materials for capacitive deionization (CDI) because of its excellent cycling stability and other advantages. However, the poor desalination ability and low adsorption capacity caused by a single reaction site seriously restrict its practical application. Here, a high-valence transition metal element Mo-doped strategy is proposed to utilize traces of Mo6+ to activate the inert-sites within NiHCF. The Mo-doped NiHCF electrodes (NiMox-HCF) with multiple pairs of redox active sites and long cycling capability were designed, breaking the trade-off between high adsorption capacity and cycling stability. The results show that the preferred NiMo0.3-HCF not only retains the excellent cycling stability (91% after 200 cycles), but also possesses a high adsorption capacity of 90.92 mg g-1 at 1.2 V, which is much better than those of NiHCF under the same conditions. In addition, it has good practical application in simulated brackish water and circulating cooling water. Structural characterization and theoretical calculations indicate that the Mo doping strategy enhanced electronic conductivity while maintaining structural stability. This research proposes a new method to activate inert sites using high-valence elements, thus effectively balancing the adsorption capacity and cycling stability of the electrode.

关键词： Capacitive deionization High adsorption capacity High-valence Mo doping Long cycling Nickel hexacyanoferrate

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