Advanced Energy Materials
·
2024
·Vol. 14
·期 11
·2302700
·
IF 24.4
Renjie Li,Youngsu Lee,Huijun Lin,Xiangli Che,Xiangjun Pu,Yuyang Yi,Feiyang Chen,Jingya Yu,Kang Cheung Chan,Kyu-Young Park,Zheng-Long Xu
The utilization of high-voltage intercalation cathodes in calcium-ion batteries (CIBs) is impeded by the substantial size and divalent character of Ca 2+ ions, which result in pronounced volume alterations and sluggish ion mobility, consequently causing inferior reversibility and low energy/power densities. To tackle these issues, polyanionic K-vacant K x VPO 4 F (x∼0, designated as K 0 VPF) is proposed as high-voltage and ultra-stable cathode material in CIBs. The K 0 VPF demonstrates a decent calcium storage capacity of 75 mAh g −1 at 10 mA g −1 and remarkable capacity retention of 84.2% over 1000 cycles. The average working voltage of the K 0 VPF is 3.85 V versus Ca 2+ /Ca, representing the highest value reported for CIB cathodes to date. The combined experimental and theoretical investigations revealed that the low volume changes and hopping diffusion barriers contribute to the extraordinary stability and high-power capabilities, respectively, of K 0 VPF. The distribution of Ca ions into polyanionic frameworks with pronounced spatial separation effectively attenuates the Ca 2+ –Ca 2+ repulsive force and thus augmenting the Ca migration kinetics. The high voltage of K 0 VPF is attributed to the inductive effect from the largely electronegative fluorine. In conjunction with a calcium metal anode and a compatible electrolyte, Ca metal full cells featured a record-high energy density of ≈300 Wh kg −1 .
研究领域:
材料科学
·
电化学
✓ 已验证
DOI
高影响因子
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
·
2023
·
IF 7.2
Dexuan Li,Guoshen Zeng,Yaoyao Wu,Zhenyu Zhou,Wei Guo,Chuanhao Li
The co-catalysts engineering, especially the non-noble traditional metal dichalcogenides (MoS 2 ), is a promising strategy in promoting photocatalytic water splitting for the green hydrogen gas production. Herein, we constructed a novel Au induced 1T-MoS 2 modified S-doped-g-C 3 N 4 (denoted as MASCN) photocatalyst . The experimental and characterizations results have showed that the sulfur doped g-C 3 N 4 (SCN) could increase the dispersity of the Au nanoparticles (NPs) and help to improve the combination between SCN and Au NPs to promote electrical conductivity . More importantly, ultra-stable 1T-MoS 2 was in situ formed within the induction of Au nanoparticles (NPs), thus providing high-density active sites and decreasing the interfacial charge transfer. As a result, the optimal sample exhibits a drastically enhanced photocatalytic hydrogen evolution rate (HER) of 4708.3 μmol/g/h, over 87-fold the rate of pure SCN (54 μmol/g/h) and appropriately 25-fold the rate of MoS 2 modified SCN (denoted as MSCN) (185 μmol/g/h). The hybrids also manifest excellent stability and durability in cycle. This study highlights the construction strategy of MoS 2 based co-catalyst for solar water splitting reactions and may provide insightful understandings for other photocatalytic applications.
研究领域:
材料科学
·
能源化学
·
光催化
✓ 已验证
DOI
高影响因子
RSC Advances
·
2019
·Vol. 9
·期 48
·28228-28233
·
IF 3.049
Xiaoyu Zhang,Yandong Han,Zihao Xing,Zhenzhen Huang,Renguo Xie,Wensheng Yang
In this work, we demonstrated a facile, one-pot approach for preparation of gold nanoflowers by using tetrachloroauric acid as a gold precursor, ascorbic acid as a reductant, and bovine serum albumin (BSA) as a ligand. It was found that the morphology of the as-prepared gold nanoparticles (Au NPs) was dependent on the concentration of BSA introduced into the reaction solutions. It is identified that BSA directed the preferential growth along the 〈111〉 direction, which contributed to the anisotropic growth of Au NPs and thus the formation of Au nanoflowers. An increased concentration of BSA reduced the reactivity of the gold precursor, leading to the formation of Au nanoflowers with increased size, which could also be obtained by decreasing the amount of reductant added. The Au nanoflowers were ultra-stable in the presence of chloride ions under acidic pH, making them suitable for selective detection of oppositely charged dyes via surface-enhanced Raman scattering according to the isoelectric point (∼4.7) of BSA capped on their surface.
研究领域:
纳米材料
·
分析化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ACS Applied Materials & Interfaces
·
2019
·
IF 8.456
Wei Song,Hanqing Zhao,Jianqi Ye,Mengmeng Kang,Siyu Miao,Zhong Li
Ti–O–C channels for ultrafast sodium storage were constructed in N/S-co-doped TiO2–C nanofibers, which deliver a high rate performance of 181.9 mAh g–1 at 5 A g–1 after 3000 cycles. The existence of Ti–O–C bonds at the interface of TiO2–C phases was revealed by synchrotron radiation X-ray absorption spectra. Based on this, first-principles calculations further verified the low energy barrier for Na+ insertion/extraction in the Ti–O–C channels formed by the intimately integrated graphite layer with TiO2 near the surface. In addition, surface defects induced by heteroatoms accelerate the Na+ mass transfer through the pathway from the carbon surface to the Ti–O–C channel.
研究领域:
材料科学
·
电化学
✓ 已验证
DOI
PubMed
高影响因子
TALANTA
·
2023
·
IF 6.1
Linlin Yang,Lingfei Li,Renyong Liu,Chenggen Xie,Jun Zhao,Wengui Chang,Lijuan Chen,Yehan Yan,Ningning Zhang,Wei Zhang,Bianhua Liu,Liang Yang
Carbon dots (CDs) as a remarkable fluorescent nanomaterial have the advantages of easy preparation, good photostability and high sensitivity. However, the poor aqueous solution stability of carbon dots largely limited their practical application due to the characteristic of easily forming precipitation for long time storage. Here, a kind of cationic fluorescent carbon dots CDs-P(Ph) 3 was designed by introducing a cationic compound, (4-carboxybutyl) triphenyl phosphonium bromide, to construct an electrostatic shell outside the dots. Such electrostatic shell could highly improve carbon dots stability in an aqueous solution to make CDs-P(Ph) 3 stable for long-term storage with negligible aggregation. Meanwhile, the sensitivity of CDs-P(Ph) 3 for hypochlorous acid (HClO) was also enhanced on the basis of the electron-withdrawing effect of cationic substituents on the surface of carbon dots. The limit of detection of CDs-P(Ph) 3 for HClO was as low as ∼0.32 μM. Additionally, the fluorescence of CDs-P(Ph) 3 could be rapid quenched by HClO with a quenching efficiency of more than 80% within 30 s. The excellent stability of CDs-P(Ph) 3 in an aqueous solution made it suitable for on-site detecting HClO in real samples, such as tap, well and lake water. Such designed fluorescent nanomaterial would provide a practical application pathway for optical sensing detection in environmental samples.
研究领域:
纳米材料科学
·
环境科学
·
分析化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Science Bulletin
·
2023
·
IF 18.9
Lianmeng Si,Yihan Wu,Hong Xiao,Wensi Xing,Rui Song,Yiju Li,Sha Wang,Xu Liang,Wenshan Yu,Jianwei Song,Shengping Shen
Two-dimensional layered membranes with high and stable ion transport properties have various applications in nanofluidic devices; however, their construction remains a considerable challenge. Herein, we develop a superstable aramid nanofiber/graphite composite membrane with numerous one-dimensional and two-dimensional nano-confined interspaces for ultrafast ion transport. The fabricated flexible and scalable membrane exhibits high tensile strength (∼115.3 MPa) even after immersion in water for 90 days. Further, the aramid nanofiber/graphite conductor features the surface-charge-governed ion transport behavior. The ionic conductivity of the membrane at a low potassium chloride concentration of 10 −4 mol/L can be enhanced by 16 times that of the bulk counterpart. More importantly, its structure and ionic conductivity remain unchanged even after immersion in different harsh solutions (e.g., acid, base, and ethanol) for over 30 days. Molecular dynamics simulations reveal that the superstability of the membrane is attributable to the robust interchain interactions within the aramid nanofibers and the strong interfacial interactions between the aramid nanofibers and graphite nanosheets . This study highlights the superior structural stability of the proposed flexible and scalable aramid nanofiber/graphite composite membrane, which could be employed in advanced nanofluidic devices for application under extreme working environments.
研究领域:
材料科学
·
纳米流体学
·
化学工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Biosensors-Basel
·
2023
·Vol. 13
·期 9
·875
·
IF 5.4
Ziang Wu,Roujuan Kou,Kun Ni,Rui Song,Yuxuan Li,Tianhu Li,Hao Zhang
DNA ligases are essential enzymes involved in DNA replication and repair processes in all organisms. These enzymes seal DNA breaks by catalyzing the formation of phosphodiester bonds between juxtaposed 5′ phosphate and 3′ hydroxyl termini in double-stranded DNA. In addition to their critical roles in maintaining genomic integrity, DNA ligases have been recently identified as diagnostic biomarkers for several types of cancers and recognized as potential drug targets for the treatment of various diseases. Although DNA ligases are significant in basic research and medical applications, developing strategies for efficiently detecting and precisely quantifying these crucial enzymes is still challenging. Here, we report our design and fabrication of a highly sensitive and specific biosensor in which a stable DNA hairpin is utilized to stimulate the generation of fluorescence signals. This probe is verified to be stable under a wide range of experimental conditions and exhibits promising performance in detecting DNA ligases. We anticipate that this hairpin-based biosensor will significantly benefit the development of new targeting strategies and diagnostic tools for certain diseases.Keywords:DNA ligases;extraordinarily stable hairpins;biomarker detection;fluorescence probes;molecular sensing
研究领域:
分子生物学
·
医学诊断
·
生物化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ACS Applied Nano Materials
·
2023
·
IF 5.9
Xiujuan Qiao,Xing-Xing Gou,Yang Li,Jian-Li Li,Tianli Yue,Qinglin Sheng,Ying-Feng Han
Gold nanoparticles (Au NPs) are often susceptible to environmental changes, especially a complexly biological environment, significantly hindering the potential application of biosensors for practical detection. However, the controllable construction of ultrastable water-soluble Au NPs for biosensing applications remains a major challenge today. Here, ultrastable water-soluble Au NPs protected by tris-N-heterocyclic carbene (NHC) ligands (2·Au NPs) have been controllably designed and synthesized. The tris-NHC shell on the Au NP surface increases the chemical and electrochemical stability of the materials, making them stable in biological environments and even in excess biomercaptan. In addition, the ammonium salt substituent on the imidazolium nitrogen not only regulates the water solubility of Au NPs but also facilitates electrostatic interactions with biological substances. Ultimately, based on the controlled synthesis of ultrastable 2·Au NPs, it is convenient to build a probe for toxic substances of ochratoxin A detection with two signal readouts. A low limit of detection (0.66 pmol·L–1) and a wide linear response range (2.5 pmol·L–1 to 25 μmol·L–1) are achieved. Meanwhile, this proposed aptasensor exhibits excellent selectivity toward various potential interfering bioanalytes and sundry ions. This work demonstrates an efficient method to regulate the properties of Au NPs by functional NHC anchors and paves the way for practical biosensing application purposes.
研究领域:
材料科学
·
分析化学
·
纳米技术
·
生物化学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF CONTROLLED RELEASE
·
2020
·
IF 7.727
Hu Chen,Hongwei Cheng,Qixuan Dai,Yi Cheng,Yang Zhang,Dengfeng Li,Yang Sun,Jingsong Mao,Ke Ren,Chengchao Chu,Gang Liu
Accurate identification of surgical margins for malignancy remains a challenge in the surgical therapy of cancer, and this encountered interoperative difficulties which directly contribute to the prognosis of patients. In recent years, indocyanine green (ICG) has been approved and applied in clinical settings for lesions detection, especially for the precise surgical resection. However, rapid clearance and poor stability greatly limit its clinical practicality. Herein, a super-stable homogeneous iodinated formulation technology (SHIFT) is designed to realize sufficient dispersion of ICG into lipiodol (SHIFTs) for transcatheter embolization (TAE) synergistic fluorescence-guided resection. Particularly, SHIFTs is prepared in a green physical mixture via a carrier-free manner, which possesses controlled morphology, long-term stability, and improved optical characteristics of ICG (fluorescence/photoacoustic/photothermal activities). Furthermore, the viscosity of the synthetic solvent is comparable to lipiodol, and further assessment demonstrated the same efficacy in computed tomography . The performance of SHIFTs in the fluorescence navigation was further evaluated in vivo by TAE therapy to the rabbit VX2 tumor model for a two-week monitor. The integration of near-infrared fluorescence surgery navigation and TAE could effectively guarantee the precise resection for hepatocellular carcinoma . This SHIFT system provides good potentials for ameliorating the dilemma of precise fluorescent navigation for surgical resection after arterial embolization in clinical practice.
研究领域:
医学影像学
·
肿瘤学
·
外科手术
✓ 已验证
DOI
PubMed
高影响因子
Nature Communications
·
2024
·Vol. 15
·期 1
·1-10
·
IF 14.7
Zhang Weichuan,Liu Ziyuan,Zhang Lizhi,Wang Hui,Jiang Chuanxiu,Wu Xianxin,Li Chuanyun,Yue Shengli,Yang Rongsheng,Zhang Hong,Zhang Jianqi,Liu Xinfeng,Zhang Yuan,Zhou Huiqiong
Stability has been a long-standing concern for solution-processed perovskite photovoltaics and their practical applications. However, stable perovskite materials for photovoltaic remain insufficient to date. Here we demonstrate a series of ultrastable Dion−Jacobson (DJ) perovskites (1,4-cyclohexanedimethanammonium)(methylammonium) n −1 Pb n I 3 n +1 ( n ≥ 1) for photovoltaic applications. The scalable technology by blade-coated solar cells for the designed DJ perovskites (nominal n = 5) achieves a maximum stabilized power conversion efficiency (PCE) of 19.11% under an environmental atmosphere. Un-encapsulated cells by blade-coated technology retain 92% of their initial efficiencies for over 4000 hours under ~90% relative humidity (RH) aging conditions. More importantly, these cells also exhibit remarkable thermal (85 °C) and operational stability, which shows negligible efficiency loss after exceeding 5000-hour heat treatment or after operation at maximum power point (MPP) exceeding 6000 hours at 45 °C under a 100 mW cm −2 continuous light illumination.
研究领域:
材料科学
·
太阳能
·
光伏技术
✓ 已验证
DOI
PubMed
高影响因子
ACS Sustainable Chemistry & Engineering
·
2020
·
IF 7.632
Fangang Meng,Fei Song,Yaxuan Yao,Guimei Liu,Shanshan Zhao
The layer-by-layer (LBL) electrostatic assembly is an effective method for fabricating high-performance nanofiltration (NF) membranes. However, the structural integrity of the separation layers can be compromised in strong acid and alkaline conditions, which limits their applications in water reclamation. Herein, we presented novel ultrastable LBL-based NF membranes engineered by mussel-inspired “bio-glue” polydopamine (PDA)-assisted polyelectrolyte LBL deposition (PDA-a-LBL) technique. Through alternative deposition of PDA/polyethylenimine (PEI) and poly(sodium 4-styrenesulfonate) (PSS) layers onto polyethersulfone (PES) ultrafiltration substrates, tailorable pore size and tunable surface chemistry were achieved. The hydrophilicity and surface charge properties of the NF membranes were dependent on the functionality of the outermost layer. The novel PDA-a-LBL NF membranes presented molecular weight cut-off (MWCO) of 275–430 Da and more than 94% rejections against divalent anions along with pure water permeability of 7–13 L m–2 h–1 bar–1, which were competitive with the currently reported LBL-based NF membranes and commercial FilmTec NF-270 membrane. Significantly, the newly developed NF membrane (PES-50-3L) exhibited remarkable chemical stability in the pH range of 2–11, ascribing to the synergistic effects of covalent bonds, electrostatic interaction, and π–π stacking between PDA/PEI and PSS layers. In addition, the membrane exhibited robust performance in a continuous, 1 week long-term operation, demonstrating its great potential for sustainable water reclamation. Our findings may shed light on the future design of novel LBL-based NF membranes with enhanced chemical stability.
研究领域:
环境科学
·
材料科学
·
水处理
·
纳米技术
✓ 已验证
产品关联
DOI
高影响因子
ACS ES&T Water
·
2024
·
IF 4.8
Zhennan Zhou,Haibo Li,Yikang Lin,Jiali Fan,Hua Tong,Jing Yang,Wei Liu,Gangfeng Ouyang
It is necessary and urgent to develop new materials that are sensitive to antibiotics and can detect them in wastewater. Here, we report a zwitterionic copper(I)-iodide hybrid cluster with strong luminescence and excellent stability. We demonstrate for the first time that this compound can be an efficient optical sensor for tetracyclines, a widely used type of antibiotic, in an aqueous system, with the limit of detection reaching as low as 521–851 ppb. Further, possible electron and energy transfer mechanisms are discussed. This study has opened up new applications for this type of material in the field of chemical sensing.
研究领域:
材料科学
·
分析化学
·
环境科学
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）