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Monodispersed Co@C nanoparticles anchored on reclaimed carbon black toward high-performance electromagnetic wave absorption

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Journal of Materials science & technology 2022年第29期124卷 182-192页

作者： Zhenjiang Li Hui Lin Yuxin Xie Laibin Zhao Yuying Guo Tingting Cheng Hailong Ling Alan Meng Shaoxiang Li Meng Zhang College of Materials Science and Engineering College of Electromechanical EngineeringQingdao University of Science and TechnologyQingdao 266061China State Key Laboratory Base of Eco-chemical Engineering College of Chemistry and Molecular EngineeringQingdao University of Science and TechnologyQingdao 266042China Shandong Engineering Research Center for Marine Environment Corrosion and Safety Protection Shandong Engineering Technology Research Center for Advanced CoatingCollege of Environment and Safety EngineeringQingdao University of Science and TechnologyQingdao 266042China

Recently,developing carbon-based hybrid materials loaded with magnetic components has been generally regarded as a promising and practically feasible strategy when it comes to constructing lightweight electromagnetic wave *** the current work,reclaimed carbon black(CB)nanopowder was firstly produced by simple burning of wheat straw,which was then employed as sustainable carbon-based host materials(carrier)and successfully decorated Co@C nanoparticles via a simple thermal reduction ***,both the as-fabricated nanocomposites and corresponding electromagnetic wave absorption performances could be effectively tuned by tailoring the dosage of the Co@C *** minimum reflection loss(RLmin)of–53.989 d B was achieved for CB/Co@C-2#at 2.28 mm thickness,meanwhile,CB/Co@C-3#was featured by a wide effective absorption band(EAB)of 6 GHz(6.72–12.72 GHz)at a 2.73 mm matching thickness,which covered the entire X band,suggesting that the CB/Co@C nanocomposites were an attractive candidate for electromagnetic wave *** to the synergistic influence of dielectric loss and magnetic loss from CB and Co@C,respectively,as well as the properly matched impedance,a reasonable electromagnetic wave attenuation mechanism was *** is noteworthy that the preparation process of CB is a facile,recycled,and low-cost strategy for achieving nanoscale carbon-based absorbing materials,moreover,the CB/Co@C nanocomposites provide a reference for constructing lightweight dielectric-magnetic products with superb electromagnetic wave absorption performances.

关键词： Reclaimed carbon black Microwave absorption Attenuation mechanism Preparation technique CB/Co@C nanocomposites

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Highly uniform Co-Cu bimetallic sulfides for rechargeable alkaline aqueous zinc batteries

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Chinese Chemical Letters 2024年第2期35卷 521-526页

作者： Xiaofang Bai Yuwei Zhao Mangwei Cui Tianshuo Guo Zijie Tang Chuan Li Heng Gao Shuo Yang Lingzhi Zhao Chunyi Zhi Hongfei Li Department of Materials Science and Engineering Southern University of Science and TechnologyShenzhen 518055China Songshan Lake Materials Laboratory Dongguan 523808China Department of Materials Science and Engineering City University of Hong KongHong KongChina International Centre for Quantum and Molecular Structures Department of PhysicsShanghai UniversityShanghai 200444China Guangdong Provincial Engineering Technology Research Center for Low Carbon and Advanced Energy Materials Institute of Semiconductor Science and TechnologySouth China Normal UniversityGuangzhou 510631China

Rechargeable alkaline aqueous zinc batteries(RAZBs)have attracted increasing ***,most RAZBs are hindered by the limited availability of cathode *** practical electrochemical performance of most cathode materials is lower than the theoretical value due to their poor electrical conductivity and low utilization *** this work,we develop a facile hydrothermal procedure to prepare highly uniform bimetallic sulfides as novel cathode materials for ***-cobalt binary metallic oxides materials possess higher conductivity and larger capacity compared with their mono-metal oxides compounds due to bimetallic synergistic effects and multiple oxidation ***,bimetallic sulfide compounds have smaller bond energy and longer bond length than their oxides,leading to less structural damage,faster kinetics of electrochemical reactions,and better *** as-prepared Co-Cu bimetallic sulfides show enhanced electrochemical performance due to various valences of Co and Cu as well as the existence of *** a result,aqueous Zn/CuCo_(2)S_(4) battery shows a high specific capacity of 117.4 mAh/g at 4 A/g and a good cycle life of over 8000 *** on PANa hydrogel electrolytes,a flexible Zn/CuCo_(2)S_(4) battery demonstrates excellent cycling *** battery can also meet the requirements of electronic devices with different shapes and performs well in extreme environments,such as freezing,drilling,and *** work opens new avenues to obtain high-rate and long-life cathode materials for RAZBs by utilizing the synergistic effects of bimetallic sulfides and provides a new platform for flexible energy storage devices.

关键词： Aqueous zinc batteries Bimetallic sulfides Cathode materials Rate performance Cycling stability

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Toluene Processed All-Polymer Solar Cells with 18%Efficiency and Enhanced Stability Enabled by Solid Additive:Comparison Between Sequential-Processing and Blend-Casting

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Energy & Environmental Materials 2024年第4期7卷 247-254页

作者： Guoping Zhang Chaoyue Zhao Liangxiang Zhu Lihong Wang Wenzhao Xiong Huawei Hu Qing Bai Yaping Wang Chen Xie Peng You He Yan Dan Wu Tao Yang Mingxia Qiu Shunpu Li Guangye Zhang College of New Materials and New Energies Shenzhen Technology UniversityShenzhen 518118China Department of Chemistry and Hong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and Reconstruction The Hong Kong University of Science and TechnologyClear Water BayHong Kong 999077China State Key Laboratory for Modification of Chemical Fibers and Polymer Materials Center for Advanced Low-dimension MaterialsCollege of Materials Science and EngineeringDonghua UniversityShanghai 201620China Julong College Shenzhen Technology UniversityShenzhen 518118China

The emergence of polymerized small molecule acceptors(PSMAs)has significantly improved the performance of all-polymer solar cells(all-PSCs).However,the pace of device engineering lacks behind that of materials development,so that a majority of the PSMAs have not fulfilled their ***,most high-performance all-PSCs rely on the use of chloroform as the processing *** instance,the recent highperformance PSMA,named PJ1-γ,with high LUMO,and HOMO levels,could only achieve a PCE of 16.1%with a high-energy-level donor(JD40)using ***,we present a methodology combining sequential processing(SqP)with the addition of 0.5%wt PC_(71)BM as a solid additive(SA)to achieve an impressive efficiency of 18.0%for all-PSCs processed from toluene,an aromatic hydrocarbon *** to the conventional blend-casting(BC)method whose best efficiency(16.7%)could only be achieved using chloroform,the SqP method significantly boosted the device efficiency using toluene as the processing *** addition,the donor we employ is the classic PM6 that has deeper energy levels than JD40,which provides low energy loss for the *** compare the results with another PSMA(PYF-T-o)with the same ***,an improved photostability of the SqP devices with the incorporation of SA is demonstrated.

关键词： all-polymers solar cells sequential processing solid additive

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A facile ligand engineering strategy to achieve ultra-highly efficient afterglow luminescence of ordinary metal salts

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science China Chemistry 2025年

作者： Li Ya Liang Xiao Yuan Wang Ya Ting Gao Da Jun Wu Da Wei Li Bin Bin Chen School of Chemistry & Molecular Engineering East China University of Science and Technology Key Laboratory for Advanced Materials Shanghai Key Laboratory of Functional Materials Chemistry Feringa Nobel Prize Scientist Joint Research Center Frontiers Science Center for Materiobiology & Dynamic Chemistry East China University of Science and Technology

Ordinary metal salts have become a promising afterglow material because of the characteristics of wide sources, low cost, and easy availability. However, their extremely weak afterglow efficiency makes them rarely used in practical applications. In this study, we proposed a ligand engineering strategy to greatly enhance the afterglow efficiency of metal salts. Al2（SO4）3, as a typical metal salt, has only a photoluminescence quantum yield（PL QY） as low as 0.1% and an unmeasurable phosphorescent QY. After doping with dual organic ligands, the PL QY of Al2（SO4）3has increased by nearly 200 times, reaching 19.90%. Meanwhile, the afterglow intensity of Al2（SO4）3has increased by approximately 20 times, accompanied by a great increase in phosphorescent lifetime from 416.15 to 2870.08 ms（a about 7-time increase）. The enhancement mechanism of afterglow efficiency is ascribed to the fact that the excited electrons from the dual ligands can be directly captured by oxygen defects（trap）, then transferred to the emitters(Al3+ions), and ultimately achieving efficient afterglow luminescence. This study utilizes ligand engineering strategy to improve the afterglow luminescence efficiency of metal salts, achieving their applications in deep ultraviolet（UV）-excited light emitting devices and visual ethylene glycol recognition.

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Corrosion Behavior and Mechanical Properties of Conventional Amalgam Reinforced by NiCrMo Nanowires

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Journal of Bio- and Tribo-Corrosion 2025年第2期11卷 1-16页

作者： Anaee, Rana A. Hassan, Ahmed R. Naser, Shaimaa A. Hamdi, Sinan S. Anaee, Mays A. Anai, Tamara A. Department of Materials Engineering University of Technology Baghdad Iraq Nanotechnology and Advanced Materials Research Center University of Technology Baghdad Iraq Engineering Collage Al Muthanna University Samawah Iraq College of Engineering Al-Iraqia University Baghdad Iraq Dentistry Basic Science Tikrit of University Tikrit Iraq

In some cases, amalgam is considering the best choice for restoration of teeth;therefore, it is important to perform studies for improving conventional amalgams. An attempt to improve the performance of conventional amalgam by adding NiCrMo nanowires with four weight percents included (0.3, 0.6, 0.9, and 1.2 wt.%) has been achieved, these nanowires were fabricated using anodic aluminum oxide to obtain nanowires with composition of (72.2% Ni, 19.5% Cr, and 8.3 wt.%Mo), which is close to the composition of the known NiCrMo alloy. The manufactured amalgam nanocomposites were identified by X-ray diffraction (XRD), scanning electron microscopy (SEM), and atomic force microscopy (AFM), where the results indicated the formation of symmetric orthorhombic Ni40Cr18Mo42 phase in nanowires NWs. These NWs behave as adsorbent for Hg in amalgam and play an important role to get coherence phases in conventional amalgam and then reduce the release of Hg to human body. Wear rate and compressive strength were tested for the manufactured amalgam composites in addition to investigating the corrosion resistance in artificial saliva at pH 5.4 and 37 ℃. The decrease in wear rate and the increase in compressive strength suggest the filling of vacancies within amalgam by nanowires and getting more coherency for components in amalgam especially with Hg, which is the main cause for the increase in microhardness. The results of corrosion test revealed the significant increase in corrosion resistance of the manufactured composites compared to conventional amalgam. © The Author(s), under exclusive licence to Springer Nature Switzerland AG 2025.

关键词： Nanowires

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Fatigue and Corrosion Fatigue Properties of Mg-Zn-Zr-Nd Alloys in Glucose-Containing Simulated Body Fluids

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Acta Metallurgica Sinica(English Letters) 2024年第9期37卷 1533-1550页

作者： Xue Han Dan Zhang Song Zhang Mohammed R.I.Abueida Lili Tan Xiaopeng Lu Qiang Wang Huanye Liu School of Materials Science and Engineering Shenyang University of TechnologyShenyang110870China School and Hospital of Stomatology China Medical UniversityShenyang110001China Shi-Changxu Innovation Center for Advanced Materials Institute of Metal ResearchChinese Academy of SciencesShenyang110016China Shenyang National Laboratory for Materials Science Northeastern UniversityShenyang110819China

Medical bone implant magnesium(Mg)alloys are subjected to both corrosive environments and complex loads in the human *** increasing number of hyperglycemic and diabetic patients in recent years has brought new challenges to the fatigue performance of Mg ***,it is significant to study the corrosion fatigue(CF)behavior of medical Mg alloys in glucose-containing simulated body fluids for their clinical ***,the corrosion and fatigue properties of extruded Mg-Zn-Zr-Nd alloy in Hank’s balanced salt solution(HBSS)containing different concentrations(1 g/L and 3 g/L)of glucose were *** average grain size of the alloy is about 5μm,which provides excellent overall mechanical *** conditional fatigue strength of the alloy was 127 MPa in air and 88 MPa and 70 MPa in HBSS containing 1 g/L glucose and 3 g/L glucose,*** crack initiation points for alloys in air are oxide inclusions and in solution are corrosion *** corrosion rate of the alloy is high at the beginning,and decreases as the surface corrosion product layer thickens with the increase of immersion *** corrosion products of the alloy are mainly Mg(OH)_(2),MgO and a small amount of Ca-P *** electrochemical results indicated that the corrosion rate of the alloys gradually decreased with increasing immersion time,but the corrosion tendency of the alloy was greater in HBSS containing 3 g/L *** the one hand,glucose accelerates the corrosion process by adsorbing large amounts of aggressive Cl^(-)*** the other hand,glucose will be oxidized to form gluconic acid,and then reacts with Mg(OH)_(2) and MgO to form Mg gluconate,which destroys the corrosion product film and leads to the aggravation of corrosion and the accumulation of fatigue damage.

关键词： Mg alloys Corrosion fatigue Glucose Gluconic acid Corrosion product

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Polyethylene interfacial dielectric layer for organic semiconductor single crystal based field-effect transistors

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Chinese Chemical Letters 2024年第4期35卷 431-435页

作者： Min Chen Boyu Peng Xuyun Guo Ye Zhu Hanying Li Department of Polymer Science and Engineering MOE Key Laboratory of Macromolecular Synthesis and FunctionalizationInternational Research Center for X PolymersShanxi-Zheda Institute of Advanced Materials and Chemical EngineeringZhejiang UniversityHangzhou 310027China Department of Applied Physics Research Institute for Smart EnergyThe Hong Kong Polytechnic UniversityHong Kong 999077China

Organic semiconductor single crystals(OSSCs) have shown their promising potential in high-performance organic field-effect transistors(OFETs). The interfacial dielectric layers are critical in these OFETs as they not only govern the key semiconductor/dielectric interface quality but also determine the growth of OSSCs by their wetting properties. However, reported interfacial dielectric layers either need rigorous preparation processes, rely on certain surface chemistry reactions, or exhibit poor solvent resistance, which limits their applications in low-cost, large-area, monolithic fabrication of OSSC-based OFETs. In this work, polyethylene(PE) thin films and lamellar single crystals are utilized as the interfacial dielectric layers, providing solvent resistive but wettable surfaces that facilitate the crystallization of 6,13-bis(tri-isopropylsilylethynyl)pentacene(TIPS-PEN) and 6,13-bis(triisopropylsilylethynyl)-5,7,12,14-tetraazapentacene(TIPS-TAP). As evidenced by the presence of ambipolar behavior in TIPS-PEN single crystals and the high electron mobility(2.3 ± 0.34 cm^(2)V^(-1)s^(-1)) in TIPS-TAP single crystals, a general improvement on electron transport with PE interfacial dielectric layers is revealed, which likely associates with the chemically inertness of the saturated C-H bonds. With the advantages in both processing and device operation, the PE interfacial dielectric layer potentially offers a monolithic way for the enhancement of electron transport in solution-processed OSSC-based OFETs.

关键词： Polyethylene Interfacial dielectric layer Organic semiconductor Single crystal Organic field-effect transistors

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The ORR electron transfer kinetics control via Co-N_(x) and graphitic N sites in cobalt single atom catalysts in alkaline and acidic media

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Journal of Energy Chemistry 2022年第5期31卷 184-194页

作者： Tong Shen Xiaoxiao Huang Shibo Xi Wei Li Shengnan Sun Yanglong Hou Beijing Innovation Centre for Engineering Science and Advanced Technology(BIC-ESAT) Beijing Key Laboratory for Magnetoelectric Materials and Devices(BKLMMD)School of Materials Science and EngineeringPeking UniversityBeijing 100081China Center for Nanoscale Science and Technology Academy for Advanced Interdisciplinary StudiesPeking UniversityBeijing 100081China Institute of Chemical and Engineering Sciences Agency for ScienceTechnology and Research(A*STAR)Singapore 627833Singapore

Cost-effective 3d transition metal(TM) based single atom catalysts(SACs) for oxygen reduction reaction(ORR) are potential alternatives for Pt-based electrocatalysts in fuel cells and metal-air *** the effects of SACs’ properties and active site composition on the catalytic performance is significant to construct highly efficient catalysts. Here, we successfully promote the activity of cobalt single atoms decorated on N-doped carbon nanosheets via tuning the content of different nitrogen components, which outperforms most reported cobalt SACs. The activity and kinetics show positive correlation trends with the content of Co-Nxand graphitic N, serving as the main active ***, ORR kinetics in alkaline media can be positively affected by the conductivity of catalysts while no similar relation is observed in acidic media. The slight loss of Co-Nxsites engenders a mild change of performance in alkaline media, while the decrease of Co-Nxsite activity due to chemical oxidation of carbon support and the loss of Co-Nxsites in acidic media exacerbate the degradation of performance. Our work provides an insight into the relation between ORR electron transfer kinetics and active sites in 3d TM based SACs.

关键词： Oxygen reduction reaction Single-atom electrocatalysts Electron transfer kinetics Active sites Degradation mechanism

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Atomically dispersed indium and cerium sites for selectively electroreduction of CO_(2)to formate

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Nano research 2023年第7期16卷 8757-8764页

作者： Zhong Liang Lianpeng Song Mingzi Sun Bolong Huang Yaping Du Tianjin Key Lab for Rare Earth Materials and Applications Center for Rare Earth and Inorganic Functional MaterialsHaihe Laboratory of Sustainable Chemical TransformationsSmart Sensing Interdisciplinary Science CenterSchool of Materials Science and EngineeringNational Institute for Advanced MaterialsNankai UniversityTianjin 300350China Department of Applied Biology and Chemical Technology The Hong Kong Polytechnic UniversityHong Kong 999077China

Currently,single-atom combo catalysts(SACCs)for carbon dioxide reduction reaction(CO_(2)RR)to the formation of HCOOH are still very limited,especially the lanthanide-based *** this work,the novel SACCs with atomically dispersed In and Ce active sites were successfully prepared on the nitrogen-doped carbon matrix(InCe/CN).Both aberration-corrected high-angle annular dark-field scanning transmission electron microscopy(AC-HAADF-STEM)images and the extended X-ray absorption fine structure(EXAFS)spectra proved the well-isolated In and Ce *** as-prepared InCe/CN shows a high Faradaic efficiency(FE)(77%)and current density of HCOOH formation(j_(HCOOH))at-1.35 V *** hydrogen electrode(RHE),much higher than the single atom *** calculations have indicated that the introduced Ce single atom sites not only significantly promote electron transfer but also optimize the In-5p orbitals towards higher selectivity towards the HCOOH *** work innovatively extends the design of SACCs towards the main group and Ln metals for more applications.

关键词： single-atom combo catalysts carbon dioxide reduction formate generation multi-active sites rare earth

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Tungsten-based nanocatalysts with different structures for visible light responsive photocatalytic degradation of bisphenol A

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Journal of Environmental sciences 2024年第5期139卷 569-588页

作者： Hai Bang Truong Thi Thu Loan Doan Nguyen Tien Hoang Nguyen Van Tam Minh Kim Nguyen Le Gia Trung Jin Seog Gwag Nguyen Tien Tran Optical Materials Research Group Science and Technology Advanced InstituteVan Lang UniversityHo Chi Minh CityViet Nam Faculty of Applied Technology School of TechnologyVan Lang UniversityHo Chi Minh CityViet Nam The University of Da Nang University of Science and Technology54 Nguyen Luong BangDa NangViet Nam The University of Da Nang University of Science and Education459 Ton Duc Thang St.Lien ChieuDa Nang 550000Viet Nam Institute of Veterinary Science and Technology 31ha zoneTrau QuyGia LamHa Noi 12400Viet Nam Department of Physics Yeungnam UniversityGyeongsanGyeongbuk 38541Republic of Korea Center for Advanced Chemistry Institute of Research and DevelopmentDuy Tan University03 Quang TrungDa Nang 550000Viet Nam Faculty of Natural Sciences Duy Tan University03 Quang TrungDa Nang 550000Viet Nam

Environmental pollution,such as water contamination,is a critical issue that must be absolutely ***,three different morphologies of tungsten-based photocatalysts(WO_(3)nanorods,WO_(3)/WS_(2)nanobricks,WO_(3)/WS_(2)nanorods)are made using a simple hydrothermal method by changing the solvents(H_(2)O,DMF,aqueous HCl solution).The as-prepared nanocatalysts have excellent thermal stability,large porosity,and high *** results show all materials have good photocatalytic activity in aqueous media,with WO_(3)/WS_(2)nanorods(NRs)having the best activity in the photodegradation of bisphenol A(BPA)under visible-light *** may originate from increased migration of charge carriers and effective prevention of electron–hole recombination in WO_(3)/WS_(2)NRs,whereby this photocatalyst is able to generate more reactive·OH and·O_(2)^(–)species,leading to greater photocatalytic *** 99.6% of BPA is photodegraded within 60 min when using 1.5 g/L WO_(3)/WS_(2)NRs and 5.0 mg/L BPA at pH ***,the optimal conditions(pH,catalyst dosage,initial BPA concentration)for WO_(3)/WS_(2)NRs are also elaborately *** rod-like heterostructures are expressed as potential catalysts with excellent photostability,efficient reusability,and highly active effectivity in different types of *** particular,the removal efficiency of BPA by WO_(3)/WS_(2)NRs reduces by only 1.5% after five recycling runs and even reaches 89.1%in contaminated lake *** study provides promising insights for the nearly complete removal of BPA from wastewater or different water resources,which is advantageous to various applications in environmental remediation.

关键词： Photodegradation Bisphenol A Tungsten-based nanocatalyst Structure Nanorod

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