ACS Applied Nano Materials最新文献

{"title":"Size-Dependent Mechanical Behaviors of Cellulose Nanocrystals Induced by Interfacial Zone: Implications for Advanced Electronic Devices Design","authors":"Xiangrui Zheng,&nbsp;Haoming Yang,&nbsp;Wenjie Xia* and Yao Zhang*,&nbsp;","doi":"10.1021/acsanm.4c0680510.1021/acsanm.4c06805","DOIUrl":"https://doi.org/10.1021/acsanm.4c06805https://doi.org/10.1021/acsanm.4c06805","url":null,"abstract":"<p >Cellulose nanopaper, a kind of thin film mainly constructed from nanocellulose, has gained much attention due to its lightweight and excellent mechanical properties compared to the plastic substrates, showing great potential in the design of electronic devices. Understanding the surface confinement effect of the cellulose nanocrystal (CNC) is essential for tuning the mechanical properties of cellulose nanopaper. Here, an all-atom molecular dynamics simulation is used to systematically investigate the surface confinement effect and size effect at the nanoscale on the dynamics and mechanical properties of CNC. The introduction of free surfaces leads to a reduction in the density and an increase in the molecular mobility in the zones near free surfaces. The interfacial zone thickness estimated from the Debye–Waller factor gradient exhibits a different variation trend with increasing CNC chain length from that estimated from the density gradient, indicating a decoupling relationship between structure and dynamics variations in the interfacial zone. Moreover, the elastic moduli of CNC exhibit power scaling laws with the density and Debye–Waller factor, while a linear scaling law is observed between elastic moduli and the normalized interfacial zone thickness. The local molecular stiffness distribution further reveals that the enhanced modulus of CNC with increasing chain length is attributed to a reduction in the contribution of the interfacial zone on the mechanical properties. Our study provides fundamental insights into the influence of the interfacial zone on the dynamical and mechanical properties of CNC at a molecular level, shedding light on the design of high-performance electronic devices.</p>","PeriodicalId":6,"journal":{"name":"ACS Applied Nano Materials","volume":"8 8","pages":"3974–3984 3974–3984"},"PeriodicalIF":5.3,"publicationDate":"2025-02-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143507891","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Density Functional Theory Calculations of Tetragonal Graphene Nanobowls for Toxic Heavy Metal Ion Removal from Wastewater","authors":"Mohsina Faria Mou,&nbsp;Mim Khatun,&nbsp;Debashis Roy,&nbsp;Abdullah Al Roman and Mohammad Tanvir Ahmed*,&nbsp;","doi":"10.1021/acsanm.4c0671510.1021/acsanm.4c06715","DOIUrl":"https://doi.org/10.1021/acsanm.4c06715https://doi.org/10.1021/acsanm.4c06715","url":null,"abstract":"<p >The removal of heavy metal ions (HMIs) from polluted environments is crucial for safeguarding public health and improving water quality. This study investigates the HMI adsorption capabilities of a tetragonal graphene nanobowl (TGNB), an sp²-hybridized carbon-based nanomaterial, in wastewater. The negative cohesive energy of −6.75 eV and real vibrational frequencies confirm that the TGNB structure is stable and can occur naturally. The nanobowl exhibited an energy gap of 1.148 eV, revealing its semiconducting nature. Using density functional theory calculations, the adsorption behavior of TGNB for Ni(ii) and As(iii) ions was explored in an aqueous medium. The optimized TGNB structure showed adsorption energies of −3.07 eV for Ni(ii) and −13.10 eV for As(iii), causing significant structural deformation. The interaction of HMIs with TGNB resulted in substantial changes in the energy gap and work function, suggesting its applicability in HMI detection and monitoring in wastewater. The negative entropy change confirms the thermodynamic stability of all the complexes. Strong, partially covalent, as well as van der Waals interactions were observed between TGNB and HMIs. The adsorption process was exothermic and spontaneous, with strong interactions confirmed for most complexes. These findings demonstrate the potential of TGNB as an efficient stable nanomaterial for HMI detection and removal from wastewater.</p>","PeriodicalId":6,"journal":{"name":"ACS Applied Nano Materials","volume":"8 7","pages":"3497–3510 3497–3510"},"PeriodicalIF":5.3,"publicationDate":"2025-02-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143452408","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Carbon Dot-Capped Bimetallic Fe2P/MoP Phosphides for Photoelectrocatalytic Hydrogen Evolution Coupled with Ethylene Glycol Oxidation","authors":"Tian Xia,&nbsp;Huilin Hu,&nbsp;Xirui Cheng,&nbsp;Xiaofeng Long,&nbsp;Mengyu Wang,&nbsp;Xianglong Hu,&nbsp;Zhiqiang Ai,&nbsp;Xueliang Jiang* and Huan Yang*,&nbsp;","doi":"10.1021/acsanm.5c0038510.1021/acsanm.5c00385","DOIUrl":"https://doi.org/10.1021/acsanm.5c00385https://doi.org/10.1021/acsanm.5c00385","url":null,"abstract":"<p >Photoelectrocatalytic hydrogen evolution reaction (HER) coupled with ethylene glycol oxidation reaction (EGOR) is crucial for green hydrogen production and the upcycling of waste plastics. However, its efficiency is limited by the photoelectric conversion efficiency and catalytic efficiency of photoelectrochemical electrodes. Herein, carbon dots (CDs) with strong photocatalytic activity were capped onto Fe₂P and MoP with excellent catalytic activity, and the constructed Fe₂P/MoP-CDs presented boosted photoelectric HER, EGOR, and HER//EGOR performance. Experimental results demonstrate that the lamellar structure of Fe₂P/MoP-CDs presents abundant photoelectrocatalytic active sites, appropriate visible spectrum absorption response, and energy band structure. Meanwhile, Fe₂P/MoP-CDs exhibit redox ability with a conduction band of −1.59 eV and a valence band of 1.65 eV, which is beneficial for the improved catalytic performance. These are ascribed to the reduced band gap width of Fe₂P/MoP, the improved separation and migration efficiency of photogenerated electron–hole pairs by the capped CDs, which can increase the photoelectric conversion efficiency, contributing to the improved activity and stability of photoelectrocatalysis. This work provides a strategy to develop advanced bifunctional photoelectric catalysts for HER-coupled EGOR, which helps to improve the efficiency of green hydrogen evolution and provides an effective way to upcycle waste plastic.</p>","PeriodicalId":6,"journal":{"name":"ACS Applied Nano Materials","volume":"8 7","pages":"3671–3679 3671–3679"},"PeriodicalIF":5.3,"publicationDate":"2025-02-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143452401","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Gelatin Methacryloyl-Adsorbed Calcium Phosphate Nanoparticles for 3D Printing of Bone Repair Scaffolds via Digital Light Processing","authors":"Xiong Xiong*,&nbsp;Qing Qing,&nbsp;Shiyu Cheng,&nbsp;Rupan Yuan,&nbsp;Dan Yang,&nbsp;Guihua Wei,&nbsp;Tao Jing,&nbsp;Zhongtao Li and Shuxin Qu*,&nbsp;","doi":"10.1021/acsanm.5c0040010.1021/acsanm.5c00400","DOIUrl":"https://doi.org/10.1021/acsanm.5c00400https://doi.org/10.1021/acsanm.5c00400","url":null,"abstract":"<p >Calcium phosphate (CaP) scaffolds fabricated by using digital light processing (DLP) represent a promising approach to bone tissue engineering and restoration. However, the printability of CaP-based inks is hindered by their low homogeneity and instability, which is attributed to the insufficient compatibility between CaP and GelMA. This study aimed to develop a homogeneous and stable CaP-based ink by adsorbing GelMA onto the surface of CaP nanoparticles (nCaP-GelMA, 320 nm). To achieve this, the interactions between GelMA and nCaP were analyzed, and the effects of GelMA adsorption on the dispersion, stability, and printability of nCaP-based ink were evaluated. Additionally, the cytocompatibility and osteogenic activity of the nCaP-GelMA scaffolds were assessed. The results demonstrated that GelMA was successfully adsorbed onto nCaP through coordinated bonding and electrostatic interactions. The stability of GelMA adsorption was further enhanced by UV irradiation. When GelMA was adsorbed onto nCaP at a weight ratio of 1.2:1, the ink exhibited optimal printability, which was attributed to improved homogeneity and dispersion of nCaP in the GelMA matrix. This advanced CaP-based ink enabled the fabrication of highly accurate, complex, and high-resolution pore structures using DLP. Biocompatibility evaluations confirmed that the nCaP-GelMA scaffolds were noncytotoxic and supported cell adhesion and extension. Moreover, they significantly enhanced osteogenic performance. These findings suggest that DLP-printed nCaP-GelMA scaffolds have significant potential for applications in bone regeneration and orthopedic repair.</p>","PeriodicalId":6,"journal":{"name":"ACS Applied Nano Materials","volume":"8 8","pages":"4206–4217 4206–4217"},"PeriodicalIF":5.3,"publicationDate":"2025-02-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143507765","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"UiO-66 MOF Nanozymes as Affinity Columns for Proteomics Applications","authors":"Siene Swinnen,&nbsp;Maxim Lox,&nbsp;Francisco de Azambuja* and Tatjana N. Parac-Vogt*,&nbsp;","doi":"10.1021/acsanm.4c0700810.1021/acsanm.4c07008","DOIUrl":"https://doi.org/10.1021/acsanm.4c07008https://doi.org/10.1021/acsanm.4c07008","url":null,"abstract":"<p >Metal–organic framework (MOF) nanozymes have shown great activity toward the hydrolysis of peptide bonds in proteins, offering considerable potential to be developed as artificial proteases suitable for proteomics and other biotechnological applications. However, the adsorption of native proteins and resulting protein fragments onto MOFs has been scarcely addressed, despite the fact that it complicates their downstream analysis and hinders further applications. In this study, we treated MOFs as “stationary phases” of affinity columns and evaluated a broad range of compounds such as surfactants, organic solvents, acids, and salts to induce variations in pH and ionic strength of the “mobile phase” and facilitate the disruption of protein-MOF interactions. As a result, we developed a reliable protein elution strategy using carbonate solutions, enabling streamlined analysis of protein digests, even at low sodium carbonate concentrations and with short elution times. The newly designed elution protocol significantly improved the desorption of polypeptide fragments from the MOF structure and enabled shorter reaction times, revealing that the reported hydrolytic activity of UiO-66 is greater than previously anticipated. Cytochrome c was selected to further evaluate the efficiency of the protocol, as its hydrolysis using MOF nanozymes has not been achieved before due to its strong adsorption onto MOFs. By applying the protocol, the hydrolysis and efficient release of cytochrome c was observed, consistently yielding reproducible peptide fragments and ensuring their full recovery from the MOF. Mechanistic experiments highlighted the key role of carbonate salts in circumventing the high affinity of peptide chains for Zr(IV) sites and in disrupting the electrostatic interactions between the MOF and peptide fragments by shielding charged amino acids. This advancement contributes to further application of MOFs in proteomics and other biotechnology fields requiring efficient hydrolytic cleavage, offering a significant advantage over natural enzymes due to the potential for MOF regeneration.</p>","PeriodicalId":6,"journal":{"name":"ACS Applied Nano Materials","volume":"8 7","pages":"3536–3544 3536–3544"},"PeriodicalIF":5.3,"publicationDate":"2025-02-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143452627","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Confining the Synthesis of Palladium Nanoparticles in Mesoporous Silicas for CO Oxidation: The Role of the Support","authors":"Francesca Tajoli,&nbsp;Paolo Dolcet,&nbsp;Sarah Claas,&nbsp;Carina B. Maliakkal,&nbsp;Di Wang,&nbsp;Christian Kübel,&nbsp;Maria Casapu,&nbsp;Michael Fröba,&nbsp;Jan-Dierk Grunwaldt and Silvia Gross*,&nbsp;","doi":"10.1021/acsanm.4c0568910.1021/acsanm.4c05689","DOIUrl":"https://doi.org/10.1021/acsanm.4c05689https://doi.org/10.1021/acsanm.4c05689","url":null,"abstract":"<p >The synthesis of palladium (Pd) nanoparticles (NPs) in the highly constrained pore network of mesoporous silicas is systematically investigated for the first time, comparing the synthesis outcomes with a reference sample of Pd NPs on the outer surface of nonporous silica. Two different families of mesoporous silica (SBA-15 and KIT-6), with different pore arrangements and connectivity, as well as two different pore sizes within both porous systems (i.e., 7 and 9 nm), are investigated as supports for Pd NPs synthesis, and the effect of mesopore confinement is explored. In particular, the mesoporous matrixes allow one to obtain smaller and homogeneously distributed Pd NPs with respect to the nonporous support, and their actual location within the mesopore-constrained environment is confirmed by electron tomography. Moreover, the application of Pd NPs on mesoporous and nonporous silicas as heterogeneous catalysts for CO oxidation is explored, and the noticeable stability of Pd NPs on the supports is assessed by probing the accessibility and dynamic response of Pd species by <i>operando</i> Pd K-edge X-ray absorption spectroscopy measurements. Oxidized Pd species are found to be the active phase of the catalytic reaction, and the complex interplay of several factors occurring in regulating the catalytic activity of the supported NPs is discussed.</p>","PeriodicalId":6,"journal":{"name":"ACS Applied Nano Materials","volume":"8 7","pages":"3289–3303 3289–3303"},"PeriodicalIF":5.3,"publicationDate":"2025-02-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.acs.org/doi/epdf/10.1021/acsanm.4c05689","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143452642","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"ThO2 and Th1–xUxO2 Nanoscale Materials and Thin Films for Nuclear Science Applications","authors":"Noah Cabanas,&nbsp;Khachatur V. Manukyan*,&nbsp;Konstantin Bauer,&nbsp;Peter C. Burns and Ani Aprahamian,&nbsp;","doi":"10.1021/acsanm.4c0614810.1021/acsanm.4c06148","DOIUrl":"https://doi.org/10.1021/acsanm.4c06148https://doi.org/10.1021/acsanm.4c06148","url":null,"abstract":"<p >This study investigates the dynamics and mechanisms of solution combustion synthesis (SCS) for the preparation of nanoscale ThO₂ and Th_1–xU_<i>x</i>O₂ materials, utilizing metal nitrates (Th(NO₃)₄ and UO₂(NO₃)₂) and acetylacetone (C₅H₈O₂) as reactants dissolved in a 2-methoxyethanol (C₃H₈O₂) solvent. By combining thermodynamic calculations, dynamic time–temperature profile measurements with differential scanning calorimetry (DSC) and thermogravimetric analysis (TGA), this research reveals how variations in acetylacetone concentration and uranium content influence the structural parameters of the synthesized oxides. The time–temperature measurements show that the heating rate and maximum combustion temperatures are sensitive to acetylacetone concentration. DSC-TGA results indicate shifts in exothermic peak temperatures as the uranium content changes. The complexation between thorium and acetylacetone emerges as a critical factor, impacting combustion parameters and the structural characteristics of the final products. The uniform distribution of Th and U in the Th_1–<i>x</i>U_<i>x</i>O₂ solid solution and the formation of nanoscale particles with strained crystallites are considered essential for the low-temperature densification of these materials for nuclear fuel pellet applications. Additionally, high-quality ThO₂ and Th_1–<i>x</i>U_<i>x</i>O₂ thin (100–150 nm) films are successfully synthesized via electrospray deposition of combustible solutions followed by a brief period of heat treatment. These films exhibit excellent structural and morphological uniformity, making them ideal candidates for nuclear measurements, irradiation damage studies, and investigations into the physical properties of both pure and mixed oxides.</p>","PeriodicalId":6,"journal":{"name":"ACS Applied Nano Materials","volume":"8 7","pages":"3345–3355 3345–3355"},"PeriodicalIF":5.3,"publicationDate":"2025-02-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143452717","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Bimetallic Ion Intercalation Optimized the Performance of Hydrated Vanadate Cathodes for Aqueous Zinc Ion Batteries","authors":"An Xiao,&nbsp;Tengfei Zhou,&nbsp;Dan Xiang,&nbsp;Sijia Zou,&nbsp;Tian Zhang,&nbsp;Longhan Zhang,&nbsp;Qixiong Zhang,&nbsp;Yafei Hou,&nbsp;Yuejin Zhu,&nbsp;Weiping Li,&nbsp;Chaofeng Zhang* and Jing Cuan*,&nbsp;","doi":"10.1021/acsanm.4c0661910.1021/acsanm.4c06619","DOIUrl":"https://doi.org/10.1021/acsanm.4c06619https://doi.org/10.1021/acsanm.4c06619","url":null,"abstract":"<p >Aqueous zinc ion batteries are gaining prominent attention due to their potentially high safety, low cost, and high volumetric capacity. However, disparities still exist in specific capacity and kinetic performances within the electrode materials of zinc ion batteries. Herein, the electrochemical and kinetic properties of layered vanadium oxide (VOH) nanorods adopting Sr²⁺ and La³⁺ as pillars were investigated systematically. It was shown that (1La,1Sr)-VOH possessed a specific capacity around 345.8 mAh g^–1 at a current density of 1 A g^–1, which was remarkably higher than that of VOH and 1Sr-VOH (208.34 mAh g^–1). Characterizations demonstrated that benefiting from the role of Sr²⁺ and La³⁺ as pillars, (1La,1Sr)-VOH possessed enlarged layer spacing and enhanced zinc ion storage kinetics during electrochemical reactions. The tested zinc ion diffusion coefficient was 1.16 × 10^–11 cm² s^–1, which was much higher than that of VOH (7.31 × 10^–12 cm² s^–1), demonstrating a smooth charge transfer process in the as-synthesized (1La,1Sr)-VOH.</p>","PeriodicalId":6,"journal":{"name":"ACS Applied Nano Materials","volume":"8 7","pages":"3566–3574 3566–3574"},"PeriodicalIF":5.3,"publicationDate":"2025-02-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143452624","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Heterogeneous Bismuth Nanocatalyst for Selective Hydrogenation of Alkenes","authors":"Raju Kumar,&nbsp;Manvender Yadav,&nbsp;Achala Rana,&nbsp;Baint Singh,&nbsp;Yashveer Singh Meena,&nbsp;Deependra Tripathi,&nbsp;Rajesh Kumar,&nbsp;Anand Narani* and Ganesh Naik*,&nbsp;","doi":"10.1021/acsanm.4c0645210.1021/acsanm.4c06452","DOIUrl":"https://doi.org/10.1021/acsanm.4c06452https://doi.org/10.1021/acsanm.4c06452","url":null,"abstract":"<p >Bismuth is widely recognized for its remarkable safety, with numerous examples showcasing its low toxicity. Considering this, we introduce a heterogeneous nanocatalyst (Bi-PN/MgO) with excellent efficiency, reusability, and stability, specifically designed for the chemoselective hydrogenation of C═C bonds in diverse olefins. Catalyst synthesis involves a straightforward impregnation technique followed by pyrolysis at 700 °C under a nitrogen atmosphere. The physicochemical properties of catalysts were determined through thorough characterization techniques including powder X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), high-resolution transmission electron microscopy (HR-TEM), N₂-adsorption–desorption, H₂-TPR, NH₃-TPD, inductively coupled plasma optical emission spectroscopy (ICP-OES), and thermogravimetric analysis. The versatility of Bi-PN/MgO is demonstrated across a diverse range of substrates for double bond reduction, covering over 29 examples, including challenging substrates with other reducible functional groups. The catalyst’s efficacy was further validated through the hydrogenation of dicyclopentadiene, citral, eugenol, and isoeugenol into their valuable hydrogenated products on a ∼1 g scale, with yields reaching up to 98%. The scalability of the process was also exhibited through a ∼1 g scale synthesis of zingerone achieved by selectively reducing the double bond in dehydrozingerone derived from lignin. The analysis of the spent catalyst confirmed its stability and reusability for up to four cycles, demonstrating no noticeable loss of activity or selectivity.</p>","PeriodicalId":6,"journal":{"name":"ACS Applied Nano Materials","volume":"8 7","pages":"3436–3449 3436–3449"},"PeriodicalIF":5.3,"publicationDate":"2025-02-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143452718","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Binary Metal Sulfide Nanoparticles as a Bifunctional Electrocatalyst for Durable Zn-Air Batteries","authors":"Mei-Qi Li,&nbsp;Yang Xiang,&nbsp;Ping Li,&nbsp;Yu-Ting Ren,&nbsp;Hong-Guo Hao,&nbsp;Jian-Min Dou,&nbsp;Hui-Yan Ma*,&nbsp;Su-Na Wang* and Yun-Wu Li*,&nbsp;","doi":"10.1021/acsanm.4c0711510.1021/acsanm.4c07115","DOIUrl":"https://doi.org/10.1021/acsanm.4c07115https://doi.org/10.1021/acsanm.4c07115","url":null,"abstract":"<p >Transition metal sulfides (TMSs) have gradually become the major catalysts for bifunctional electrocatalytic processes of the oxygen reduction reaction (ORR) and oxygen evolution reaction (OER) applied in rechargeable Zn-air batteries (ZABs). In this article, by epitaxially growing a Ni complex onto Co-based ZIF-67 as a precursor, an optimal catalyst (abbr. Co₉S₈/Ni₃S₂@NC-800) incorporating N-doped carbon matrices encapsulated binary Co₉S₈ and Ni₃S₂ nanoparticles was constructed by high-temperature pyrolysis, which can efficiently drive bifunctional ORR/OER activity (Δ<i>E</i> = 0.62 V). Notably, the catalyst exhibits remarkable 4e^– ORR activity, characterized by a high half-wave potential (<i>E</i>_1/2 = 0.96 V), exceeding the performance of benchmark Pt/C. It demonstrates commendable OER activity, requiring a modest operating overpotential of only 325 mV (<i>E</i>_J=10). Moreover, a ZAB assembled with Co₉S₈/Ni₃S₂@NC-800 as the air cathode has a substantial power density (213.17 mW·cm^–2), an elevated specific capacity (771.10 mAh·g_Zn^–1), and exceptional cycle stability (1421 h, 2842 cycles), which is potentially applied in various energy-related devices. The favorable ORR/OER performance may be due to the synergistic interaction of the N-doped carbon matrix and binary Co₉S₈ and Ni₃S₂ TMSs in the catalyst.</p>","PeriodicalId":6,"journal":{"name":"ACS Applied Nano Materials","volume":"8 7","pages":"3575–3583 3575–3583"},"PeriodicalIF":5.3,"publicationDate":"2025-02-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143452712","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}