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V_(2)O_(3)/VN electrocatalysts with coherent heterogeneous interfaces for selecting low-energy nitrogen reduction pathways

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SusMat 2024年第4期4卷 90-103页

作者： Tae-Yong An Chengkai Xia Minyeong Je Hyunjung Lee Seulgi Ji Min-Cheol Kim Subramani Surendran Mi-Kyung Han Jaehyoung Lim Dong-Kyu Lee Joon Young Kim Tae-Hoon Kim Heechae Choi Jung Kyu Kim Uk Sim Hydrogen Energy Technology Laboratory Korea Institute of Energy Technology(KENTECH)NajuRepublic of Korea School of Chemical Engineering Sungkyunkwan University(SKKU)SuwonRepublic of Korea Materials&Chemistry Group Institute of Inorganic ChemistryUniversity of CologneCologneGermany Department of Polymer Engineering Graduate SchoolAlan G.MacDiarmid Energy Research Institute&School of Polymer Science and EngineeringChonnam National UniversityGwangjuRepublic of Korea Research Institute NEEL SciencesJeollanamdoRepublic of Korea Department of Materials Science and Engineering Chonnam National UniversityGwangjuRepublic of Korea Department of Chemistry Xi’an Jiaotong-Liverpool UniversitySuzhouChina

Electrochemical nitrogen reduction reaction(NRR)is a sustainable alterna-tive to the Haber-Bosch process for ammonia(NH3)***,the significant uphill energy in the multistep NRR pathway is a bottleneck for favorable serial *** overcome this challenge,we designed a vanadium oxide/nitride(V_(2)O_(3)/VN)hybrid electrocatalyst in which V_(2)O_(3)and VN coex-ist coherently at the heterogeneous *** single-phase V_(2)O_(3)and VN exhibit different surface catalytic kinetics for NRR,the V_(2)O_(3)/VN hybrid elec-trocatalyst can provide alternating reaction pathways,selecting a lower energy pathway for each material in the serial NRR *** a result,the ammo-nia yield of the V_(2)O_(3)/VN hybrid electrocatalyst was 219.6µg h^(-1)cm^(-2),and the Faradaic efficiency was 18.9%,which is much higher than that of single-phase VN,V_(2)O_(3),and VNxOy solid solution catalysts without *** functional theory calculations confirmed that the composition of these hybrid electrocatalysts allows NRR to proceed from a multistep reduction reaction to a low-energy reaction pathway through the migration and adsorption of interme-diate ***,the design of metal oxide/nitride hybrids with coherent heterointerfaces provides a novel strategy for synthesizing highly efficient elec-trochemical catalysts that induce steps favorable for the efficient low-energy progression of NRR.

关键词： coherent heterogeneous interfaces green ammonia synthesis hybrid electrocatalyst low-energy progression nitrogen reduction reaction(NRR) vanadium oxide/nitride(V_(2)O_(3)/VN)

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Bimetallic NiCo boride nanoparticles confined in a MXene network enable efficient ambient ammonia electrosynthesis

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Journal of Energy chemistry 2023年第2期77卷 469-478,I0012页

作者： Chuang Wang Qin-Chao Wang Ke-Xin Wang Michiel De Ras Kaibin Chu Liang-Liang Gu Feili Lai Sheng-You Qiu Hele Guo Peng-Jian Zuo Johan Hofkens Xiao-Dong Zhu School of Chemistry and Chemical Engineering Harbin Institute of TechnologyHarbin 150001HeilongjiangChina State Key Laboratory Base of Eco-Chemical Engineering College of Chemical EngineeringQingdao University of Science&TechnologyQingdao 266042ShandongChina Department of Chemistry KU LeuvenLeuven 3001Belgium Max Planck Institute for Polymer Research 55128 MainzGermany School of Chemistry and Chemical Engineering Yangzhou UniversityYangzhou 225002JiangsuChina

Ambient electrocatalytic nitrogen fixation is an emerging technology for green ammonia synthesis,but the absence of optimized,stable and performant catalysts can render its practical application ***,bimetallic NiCo boride nanoparticles confined in MXene are shown to accomplish highperformance nitrogen reduction *** king advantage of the synergistic effect in specific compositions with unique electronic d and p orbits and typical architecture of rich nanosized particles embedded in the interconnected conductive network,the synthesized MXene@NiCoB composite demonstrates extensive improvements in nitrogen molecule chemisorption,active area exposure and charge *** a result,optimal NH3 yield rate of 38.7μg h^(-1) mgcat^(-1).and Faradaic efficiency of 6.92%are acquired in0.1 M Na_(2)SO_(4) ***,the great catalytic performance can be almost entirely maintained in the cases of repeatedly-cycled and long-term *** investigations reveal that the nitrogen reduction reaction on MXene@NiCoB catalyst proceeds according to the distal pathway,with a distinctly-reduced energy barrier relative to the Co2B *** work may inspire a new route towards the rational catalyst design for the nitrogen reduction reaction.

关键词： Nitrogen reduction reaction Electrocatalyst MXene Boride Ammonia

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A new perspective to develop regiorandom polymer acceptors with high active layer ductility,excellent device stability,and high efficiency approaching 17%

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Carbon Energy 2023年第2期5卷 216-224页

作者： Qunping Fan Ruijie Ma Wenyan Su Qinglian Zhu Zhenghui Luo Kai Chen Yabing Tang Francis RLin Yuxiang Li He Yan Chuluo Yang Alex K.-Y.Jen Wei Ma State Key Laboratory for Mechanical Behavior of Materials Xi'an Jiaotong UniversityXi'anShaanxiChina Department of Chemistry Hong Kong University of Science and TechnologyKowloonHong KongChina School of Materials Science and Engineering Xi'an University of Science and TechnologyXi'anShaanxiChina Shenzhen Key Laboratory of Polymer Science and Technology Shenzhen UniversityShenzhenGuangdongChina Department of Chemistry City University of Hong KongKowloonHong KongChina

The recently reported efficient polymerized small-molecule acceptors(PSMAs)usually adopt a regioregular backbone by polymerizing small-molecule acceptors precursors with a low-reactivity 5-brominated 3-(dicyanomethylidene)indan-1-one(IC)end group or its derivatives,leading to low molecular weight,and thus reduce active layer mechanical ***,a series of newly designed chlorinated PSMAs originating from isomeric IC end groups are developed by adjusting chlorinated positions and copolymerized sites on end groups to achieve high molecular weight,favorable intermolecular interaction,and improved physicochemical *** with regioregular PY2Se-Cl-o and PY2Se-Cl-m,regiorandom PY2Se-Cl-ran has a similar absorption profile,moderate lowest unoccupied molecular orbital level,and favorable intermolecular packing and crystallization ***,the binary PM6:PY2Se-Cl-ran blend achieves better ductility with a crack-onset strain of 17.5% and improved power conversion efficiency(PCE)of 16.23% in all-polymer solar cells(all-PSCs)due to the higher molecular weight of PY2Se-Cl-ran and optimized blend morphology,while the ternary PM6:J71:PY2Se-Cl-ran blend offers an impressive PCE approaching 17% and excellent device stability,which are all crucial for potential practical applications of all-PSCs in wearable *** date,the efficiency of 16.86% is the highest value reported for the regiorandom PSMAs-based all-PSCs and is also one of the best values reported for the *** work provides a new perspective to develop efficient all-PSCs,with all high active layer ductility,impressive PCE,and excellent device stability,towards practical applications.

关键词： all-polymer solar cells chlorination ductility power conversion efficiency regiorandom polymer acceptors

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Iodinated underlayer for enhanced chemically amplified resist performance 42

Iodinated underlayer for enhanced chemically amplified resis...

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Advances in Patterning Materials and Processes XLII

作者： Ku, Yejin Choi, Hyoeun Kim, Gayoung Lee, Jin-Kyun Kim, Jiho Lee, Sangsul Program in Environment and Polymer Engineering Inha University Incheon22212 Korea Republic of Department of Polymer Science and Engineering Inha University Incheon22212 Korea Republic of Program in Semiconductor Convergence Inha University Incheon22212 Korea Republic of Pohang Accelerator Laboratory POSTECH Pohang37673 Korea Republic of

ISBN: (纸本)9781510686427

High-numerical-aperture (NA) extreme ultraviolet lithography (EUVL) is essential for next-generation semiconductor manufacturing, requiring advanced photoresists (PRs) that can function effectively in ultra-thin films. However, ultra-thin PR films-primarily needed to meet stringent depth-of-focus constraints-face several challenges, including low photon absorption and reduced etch resistance. Additionally, as feature sizes shrink, the diminished PR-substrate contact area exacerbates pattern collapse issues in high NA EUVL. To mitigate these challenges, underlayers are increasingly employed to enhance patterning performance. In this study, we propose a supportive underlayer (SUL) to enhance the sensitivity of chemically-amplified photoresists (CARs) and improve adhesion between the CAR film and the SUL. As a preliminary step, we introduced a simple experimental protocol to identify high-absorption elements that could be more effective in the CAR system, exploiting a PR film-overcoat bi-layer structure. Overcoats containing hydrogen (H), iodine (I), and tin (Sn) were readily prepared on top of the CAR film by the help of solvent orthogonality. Our findings revealed that iodine atoms significantly reduced the exposure threshold compared to hydrogen or tin. Based on these results, hydrophobic iodinated materials were selected as SUL candidates, and a few materials were synthesized with different iodine contents. After fabricating the bi-layer stack, we evaluated the solubility changes of PR films under both positive- and negative-tone development (PTD and NTD) conditions. The incorporation of an iodinated SUL beneath the CAR films enhanced both lithographic sensitivity and substrate adhesion, regardless of the development type, with higher iodine content further amplifying these effects. These findings provide a promising pathway for implementing EUV underlayers specifically tailored for high-NA EUVL. © 2025 SPIE.

关键词： Extreme ultraviolet lithography

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Lignin-based polyurethane composites enhanced with hydroxyapatite for controlled drug delivery and potential cellular scaffold applications

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polymer Composites 2024年第16期45卷 15159-15172页

作者： Nugroho, Roshid Adi Saputra, Ozi Adi Pradita, Agung Lucky Fajar, Al Bukhori Nur Wibowo, Fajar Rakhman Department of Chemistry Faculty of Mathematics and Natural Sciences Universitas Sebelas Maret Central Java Surakarta Indonesia Sustainable Chemical Science and Technology Taiwan International Graduate Program Academia Sinica Taipei Taiwan Institute of Chemistry Academia Sinica Taipei Taiwan Department of Chemical Engineering Collage of Engineering National Taiwan University Taipei Taiwan

polymer technology has rapidly advanced across diverse domains, particularly in biomedical applications. Among various polymers, polyurethane (PU) hold great potential in developing biomaterials such as biomedical scaffold and drug delivery. In this study, we have innovatively engineered eco-friendly polyurethane using lignin, a sustainable bio-polyol derived from oil palm empty fruit bunches. To enhance the physicochemical properties of the PU, we have incorporated hydroxyapatite (HA) into the composites. The inclusion of HA has led to notable improvements in crucial properties such as density, porosity, and water absorption, making these composites ideal candidates for tissue regeneration scaffolds. Furthermore, to assess their biomedical applicability in drug delivery and cell scaffolding, we have employed the quercetin drug model. The results revealed a sustained kinetic release behavior within the polyurethane/hydroxyapatite (PU/HA) composites, showcasing their potential for controlled drug delivery applications. Moreover, cytotoxicity assays conducted using neuro-2a cell models demonstrated the non-cytotoxic nature of both PU and PU/HA composites. This finding holds significant implications for biomedical applications, indicating that these composites offer biocompatible platforms for tissue engineering and regenerative medicine endeavors. The ability of these composites to support cell viability underscores their potential for a wide range of biomedical applications, including neural tissue engineering and drug delivery systems targeting brain diseases. These findings pave the way for the development of innovative and sustainable biomaterials with diverse biomedical applications. Highlights: An eco-friendly polyurethane has been engineered by harnessing liginin-derived oil palm empty fruit bunches. Incorporation of hydroxyapaptite enhance the physical properties of polyurethane. Controlled kinetic drug release is one of polyurethane/hydroxyapatite (PU/HA) com

关键词： Fruits

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A Novel Nonlinear Theoretical Framework for Composite Theory: Case Study with PP-MCC Composite 10

A Novel Nonlinear Theoretical Framework for Composite Theory...

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10th International Multidisciplinary engineering Research Conference on Moratuwa engineering Research, MERCon 2024

作者： Kanchana, Pulinda K. Weerasinghe, Isurika U. Rathnayake, Shanari Karunanayake, L. Amarasinghe, D.A.S. Samarasekara, A.M.P.B. Attygalle, D. Weragoda, V.S.C. University of Moratuwa Department of Materials Science and Engineering Moratuwa Sri Lanka University of Sri Jayewardenepura Department of Chemistry Nugegoda Sri Lanka University of Sri Jayewardenepura Department of Polymer Science Nugegoda Sri Lanka

ISBN: (纸本)9798331529048

This research explores a novel theoretical approach to model tensile strength behavior in Microcrystalline Cellulose (MCC)-reinforced Polypropylene, with varying volume fraction of the reinforcing component. By modifying the MCC with a sunflower oil-based surface treatment, a deviation from the well-established linear Bowyer and Bader's model is observed, especially at low volume fractions of surface-modified reinforcement. The study suggests a non-linear adjustment to the model to accurately describe these deviations, introducing a nonlinear exponent to better represent matrix-reinforcement interactions. This research provides a more delicate understanding of these interactions, offering insights that could lead to further refinement of existing theoretical models. The findings suggest that this approach could enhance the predictive accuracy of tensile strength in composite materials, ultimately contributing to the development of stronger, more reliable materials for a diverse range of applications. © 2024 IEEE.

关键词： Microcrystals

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Self-assembly Promoted Crystallization of Diblock Copolypeptoids in Solution

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Chinese Journal of chemistry 2023年第18期41卷 2305-2310页

作者： Rongye Li Yue Zhao Min Lin Jing Sun State Key Laboratory of Supramolecular Structure and Materials College of ChemistryJilin UniversityChangchunJilin 130012China Key Laboratory of Biobased Polymer Materials Shandong Provincial Education DepartmentSchool of Polymer Science and EngineeringQingdao University of Scienceand TechnologyQingdaoShandong 266042China

Comprehensive Summary,Great efforts have been lately devoted to fabricating well-defined nanostructures using crystallization-driven self-assembly(CDSA)*** influence of self-assembly on crystallization is also of great ***,a series of amphiphilic diblock copolypeptoids poly(N-allylglycine)-b-poly(N-octylglycine)modified with cysteamine hydrochloride((PNAG-g-NH_(2))-b-PNOG)were synthesized by ring-opening polymerization(ROP)and post-polymerization *** diblock copolypeptoid is comprised of one hydrophobic crystalline PNOG block and one hydrophilic amorphous block,which can aggregate into nanostructured assemblies with soluble PNAG-g-NH_(2) as the corona layer and PNOG as the inner core in aqueous *** a systematic study by differential scanning calorimetry(DSC)and wide-angle X-ray scattering(WAXS),we demonstrated that the self-assembly of the block copolymers strengthens the crystallization of the PNOG block.

关键词： Copolymers Self-assembly Crystallization Ring-opening polymerization Microphase separation/Polypeptoids

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Corrigendum to“Ultrasound-triggered piezocatalytic composite hydrogels for promoting bacterial-infected wound healing”[***.24(2023)96-111]

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Bioactive Materials 2024年第2期32卷 147-148页

作者： Dun Liu Lei Li Ben-Long Shi Bo Shi Ming-Ding Li Yong Qiu Di Zhao QunDong Shen Ze-Zhang Zhu Division of Spine Surgery Department of Orthopedic SurgeryAffiliated Drum Tower HospitalMedical School of Nanjing UniversityNanjing210008China Department of Polymer Science and Engineering Key Laboratory of High-Performance Polymer Materials and Technology of MOESchool of Chemistry and Chemical EngineeringNanjing UniversityNanjing210023China Institute of Brain Science and Disease School of Basic MedicineQingdao UniversityQingdaoShandong266001China

The authors regret.The authors would like to apologise for any inconvenience caused.

关键词： wound checked healing

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Tough polymeric Hydrogels Based on Amino Acid Derivative Mediated Dynamic Metal Coordination Bonds

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Chinese Journal of polymer science 2024年第10期42卷 1578-1588,I0014页

作者： Meng Li Meng-Yuan Zhang Wu-Xuan Lei Zhu-Ting Lv Qing-Hua Shang Zheng Zhao Jiang-Tao Li Yi-Long Cheng Engineering Research Center of Energy Storage Materials and Devices Ministry of EducationSchool of ChemistryXi’an Jiaotong UniversityXi’an710049China Polymer Materials&Engineering Department School of Materials Science&Engineering Chang’an UniversityXi’an710064China School of Electrical Engineering Xi’an Jiaotong UniversityXi’an710049China Department of Nuclear Medicine the First Affiliated Hospital of ChinaXi’an Jiaotong UniversityXi’an710049China

Abstract The development of physically crosslinked hydrogels with excellent mechanical and sensing properties is of importance for expanding the practical applications of intelligent soft hydrogel ***,after copolymerization of hydroxyl-containing amino acid derivative N-acryloyl serine(ASer)with acrylamide(AM),we introduce Zr4+through an immersion strategy to construct metal ion-toughened non-covalent crosslinked hydrogels(with tensile strength of up to 5.73 MPa).It is found that the synergistic coordination of hydroxyl and carboxyl groups with Zr^(4+)substantially increases the crosslinking density of the hydrogels,thereby imparting markedly superior mechanical properties compared to hydroxyl-free Zr^(4+)-crosslinked hydrogels,such as N-acryloyl alanine(AAla)copolymerized with AM hydrogels(with tensile strength of 2.98 MPa)Through the adjustment of the composition of the copolymer and the density of coordination bonds,the mechanical properties of the hydrogels can be modulated over a wide ***,due to the introduction of metal ions and the dynamic nature of coordination bonds,the hydrogels also exhibit excellent sensing performance and good self-recovery properties,paving the way for the development of flexible electronic substrates with outstanding comprehensive performances.

关键词： Hydrogel Amino acid Metal coordination Mechanical performance Flexible sensor

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Ultrasound-triggered piezocatalytic composite hydrogels for promoting bacterial-infected wound healing

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Bioactive Materials 2023年第6期24卷 96-111页

作者： Dun Liu Lei Li Ben-Long Shi Bo Shi Ming-Ding Li Yong Qiu Di Zhao Qun-Dong Shen Ze-Zhang Zhu Division of Spine Surgery Department of Orthopedic SurgeryAffiliated Drum Tower HospitalMedical School of Nanjing UniversityNanjing210008China Department of Polymer Science and Engineering Key Laboratory of High-Performance Polymer Materials and Technology of MOESchool of Chemistry and Chemical EngineeringNanjing UniversityNanjing210023China Institute of Brain Science and Disease School of Basic MedicineQingdao UniversityQingdaoShandong266001China

Wound healing has become one of the basic issues faced by the medical community because of the susceptibility of skin wounds to bacterial *** such,it is highly desired to design a nanocomposite hydrogel with excellent antibacterial activity to achieve high wound closure ***,based on ultrasound-triggered piezocatalytic therapy,a multifunctional hydrogel is designed to promote bacteria-infected wound *** ultrasonic vibration,the surface of barium titanate(BaTiO_(3),BT)nanoparticles embedded in the hydrogel rapidly generate reactive oxygen species(ROS)owing to the established strong built-in electric field,endowing the hydrogel with superior antibacterial *** modality shows intriguing advantages over conventional photodynamic therapy,such as prominent soft tissue penetration ability and the avoidance of serious skin phototoxicity after systemic administration of ***,the hydrogel based on N-[tris(hydroxymethyl)methyl]acrylamide(THM),N-(3-aminopropyl)methacrylamide hydrochloride(APMH)and oxidized hyaluronic acid(OHA)exhibits outstanding self-healing and bioadhesive properties able to accelerate full-thickness skin wound ***,compared with the widely reported mussel-inspired adhesive hydrogels,OHA/THM-APMH hydrogel due to the multiple hydrogen bonds from unique tri-hydroxyl structure overcomes the shortage that catechol groups are easily oxidized,giving it long-term and repeatable adhesion ***,this hybrid hydrogel confines BT nanoparticles to wound area and locally induced piezoelectric catalysis under ultrasound to eradicate bacteria,markedly improving the therapeutic biosafety and exhibits great potential for harmless treatment of bacteria-infected tissues.

关键词： Multifunctional hydrogels Bioadhesiveness Self-healing Antibacterial ability Piezocatalytic therapy

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