CARBON
·
2017
·
IF 6.337
Zishuang Yue,Tushar Gupta,Fan Wang,Chao Li,Rajesh Kumar,Zhenyu Yang,Nikhil Koratkar
Red phosphorus (P) shows enormous potential as a high-performance and cost-effective Lithium (Li)-ion anode material . It alloys with Li forming Li 3 P, which translates to a theoretical capacity of ∼2595 mAh g −1 (∼7 times better than graphite). Further, the cost of bulk P is comparable to battery-grade graphite. However, there are two intrinsic limitations that prevent deployment of P, viz., its low electrical conductivity and its high volume change on cycling that leads to pulverization and loss of electrical contact. Here, we present an approach to concurrently address both limitations. We employ electro-spraying and far-infrared reduction (FIR) to fabricate composites of P and reduced graphene oxide (rGO). The electro-spraying process enables ultra-small P particles (5–10 nm), which suppresses stress-induced pulverization and drastically reduces Li-ion diffusion distances. The low electrical conductivity of P is also not a limitation at such small particle sizes. FIR establishes carbon-phosphorous bonds that prevent surface migration and agglomeration of P, and enable efficient electron transfer between the rGO matrix and P nanoparticles . The P/rGO anode delivers outstanding specific capacity (∼1763 mAh g −1 at current density of ∼0.1 A g −1 ), extraordinary high-rate capability (up to ∼40 A g −1 ) and long cycle-life (>1000 cycles with ∼99% coulombic efficiency).
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Materials Today Communications
·
2024
·
IF 3.7
Jinyuan Zhao,Hongwang Yang,Zhanxin Jiang,Jingquan Wang,Chuncai Kong,Zhimao Yang,Tong Wang,Hao Zhu
The acid-activated dispersive palygorskite nanorods supported copper manganese composite oxide (CuMn/PG) was synthesized for catalytic oxidation of toluene. The palygorskite nanorods with higher purity were purified, separated and acid-activated by natural palygorskite. The pretreated palygorskite was used as the support to prepare CuMn/PG with large specific surface area, controllable morphology, adjustable size, and excellent catalytic activity through the regulation of a variety of surfactants in the process of co-precipitation. When non-ionic polyethylene glycol (PEG) was used as the surfactant, the copper-manganese oxide exhibited good dispersibility on the palygorskite nanorods. The CuMn/PG catalysts with different ratios prepared presented larger specific surface areas, which effectively solved the problem of small specific surface area of copper manganese oxide catalyst. Among them, the CuMn/PG catalyst with a copper-manganese molar ratio of 1:1 formed CuMn 2 O 4 spinel structure phase to enhance the catalysis of toluene with low temperatures of T 50 (195 °C) and T 90 (210 °C). At the same time, the CuMn/PG exhibited good stability. the removal rate of toluene still reached 98.5% after continuous operation for 60 h.
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INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
·
2024
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IF 8.1
Honggang Lu,Ruiming Jia,Chenjie Wang,Wei Guan,Peng Wang,Lin Zhang,Zhixing Gan,Lifeng Dong,Liyan Yu,Lina Sui
Bare g-C 3 N 4 (CN) encounters substantial charge recombination with strong fluorescence, which is detrimental to the photocatalytic reactions. In this work, g-C 3 N 4 is curved into nanotubes then combined with black phosphorus quantum dots (BPQDs). The BPQDs decorated tubular CN (BPTCN) exhibits a stable and high photocatalytic hydrogen evolution rate of 507.51 μmolh −1 g −1 under visible irradiation, which is four times higher than that of pure TCN. The apparent quantum yield (AQY) at 420 nm of BPTCN reaches 2.58%. The excellent photocatalytic ability of the BPTCN is attributed the suppressed recombination of electron-hole pair and improved carrier transport efficiency, which are introduced by the 1D tubular structure and the band alignment of the BPTCN heterojunction.
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International Journal of Nanomedicine
·
2024
·
IF 6.6
Jing Wang,Yanxiang Sang,Weijian Chen,Liang Cheng,Wenxiang Du,Hongjie Zhang,Benyan Zheng,Lei Song,Yuan Hu,Xiaopeng Ma
Introduction As an effective alternative choice to traditional mono-therapy, multifunctional nanoplatforms hold great promise for cancer therapy. Based on the strategies of Fenton-like reactions and reactive oxygen species (ROS)-mediated therapy, black phosphorus (BP) nanoplatform BP@Cu2O@L-Arg (BCL) co-assembly of cuprous oxide (Cu2O) and L-Arginine (L-Arg) nanoparticles was developed and evaluated for synergistic cascade breast cancer therapy.Methods Cu2O particles were generated in situ on the surface of the BP nanosheets, followed by L-Arg incorporation through electrostatic interactions. In vitro ROS/nitric oxide (NO) generation and glutathione (GSH) depletion were evaluated. In vitro and in vivo anti-cancer activity were also assessed. Finally, immune response of BCL under ultrasound was investigated.Results Cu2O was incorporated into BP to exhaust the overexpressed intracellular GSH in cancer cells via the Fenton reaction, thereby decreasing ROS consumption. Apart from being used as biocompatible carriers, BP nanoparticles served as sonosensitizers to produce excessive ROS under ultrasound irradiation. The enhanced ROS accumulation accelerated the oxidation of L-Arg, which further promoted NO generation for gas therapy. In vitro experiments revealed the outstanding therapeutic killing effects of BCL under ultrasound via mechanisms involving GSH deletion and excessive ROS and NO generation. In vivo studies have illustrated that the nanocomplex modified the immune response by promoting macrophage and CD8+ cell infiltration and inhibiting MDSC infiltration.Discussion BCL nanoparticles exhibited multifunctional characteristics for GSH depletion-induced ROS/NO generation, making a new multitherapy strategy for cascade breast cancer therapy.
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PubMed
高影响因子
FUEL
·
2024
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IF 6.7
Wenfeng Peng,Zhengxing Lv,Wenju Zhou,Bingmin Yan,Shijing Zhao,Lailei Wu,Junshuang Zhou,Huiyang Gou
Creating highly efficient bifunctional transition metal phosphide catalysts for electrochemical water splitting through cost-effective and universal methods remains an elusive challenge. Here we introduce a universal high temperature and high pressure (HTHP) technique that readily produce phase-pure TMPs, including FeNiP, CoNiP, and Fe 2/3 Co 2/3 Ni 2/3 P (CFNP), which can serve as an ideal model for investigating the relationship between electrocatalytic activity, structure, and chemical composition. The crystal structure of obtained CFNP has been carefully determined for the first time by using single-crystal X-ray diffraction (XRD) and XAS simulations. In the structure of CFNP, iron atoms form an MP4 tetrahedron with Co atoms and a 5-coordination pyramid with Ni atoms. This arrangement synergistically induces an electron-deficient state in the metals and an electron-rich state in phosphorus, enhancing CFNP/NF’s bifunctional catalytic effectiveness, achieving low overpotentials of 92 mV and 239 mV at 10 mA/cm 2 in 1 M KOH environment for hydrogen evolution reaction (HER) and oxygen evolution reaction (OER), respectively. Moreover, an integrated electrolyzer using CFNP/NF as both electrode components can achieve a current density of 10 mA cm −2 at 1.536 V, showcasing a catalytic activity for overall water splitting comparable to those of phosphide-based electrocatalysts. The HTPH technique opens new possibility for exploring pure-phase multimetallics and high-entropy phosphides as potential multifunctional materials for potential applications.
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ELECTROCHEMISTRY
·
2024
·Vol. 92
·期 4
·043015-043015
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IF 2.7
Yuxiang ZHONG,Yuanjia MA,Yangzhou HE,Xiao YANG
The authors focus on the development of a molten salt processing technology for extracting white phosphorus (P4) from sewage sludge ash, which is recognized as a potential secondary P source due to its composition of various metal phosphates. This work offers insights into the interaction between solid AlPO4 and molten CaCl2. The results show that solid AlPO4 exhibits favorable solubility in molten CaCl2, although at a slower rate compared to solid Ca3(PO4)2 due to the presence of stable Al–O bonds. The study also demonstrates the feasibility of extracting high-purity P4 from the molten mixture through electrolysis. The purity of the obtained electrolyzed P4 from AlPO4 is comparable to the commercially available high-purity-grade product. These findings underscore the potential of sewage sludge ash containing AlPO4 as a viable source for extracting high-purity P4. This research contributes to the advancement of sustainable P utilization technologies from secondary sources.
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JOURNAL OF ALLOYS AND COMPOUNDS
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2024
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IF 5.8
Cheng Lin,Jilong Tang,Sizhuo Wang,Qun Gao,Yanlin Liu,Wei Wu,Xiaoli Wang,Zhenguo Huang,Limei Yang
Featuring low cost and high theoretical capacity, phosphorus-rich iron diphosphides (FeP 2 ) have emerged as excellent anode candidates for lithium-ion batteries. However, the typical chemical synthses involving high temperatures and toxic gases have restricted the mass production of FeP 2 . We now report a FeP 2 /C/CNTs@3D interconnected graphene aerogel composite synthesized by ball milling and low temperature heat treatment. Because of the unique microstructure and synergistic effect between well-dispersed FeP 2 particles and graphene aerogel , the as-prepared FeP 2 /C/ [email protected] % displays excellent lithium storage performance in terms of reversible capacity (886 mA h g −1 at 0.1 A g −1 ), cycling stability (476 mA h g −1 at 2 A g −1 even after 1000 cycles), and rate capability (685 mA h g −1 at 5 A g −1 ). Machine learning methods (decision tree and random forest algorithms) prove effective in evaluating and predicting electrochemical performance of the electrode materials.
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POLYMER
·
2024
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IF 4.1
Xin Wang,Haoran Pei,Jun Li,Yinghong Chen
The black phosphorus (BP), which receives the increasing attention in polymer flame retardancy, has been greatly restricted due to its extremely easy oxidation in air. Herein, a simple efficient and green sonochemical method was accordingly proposed to realize the exfoliation and preparation of BP with enhanced air stability by utilizing the electrostatic self-assembly strategy in the presence of cation polymer poly(ethylene imine) (PEI) modifier. In addition, the prepared PEI modified BP nanosheets (FLBP@PEI) was further applied as the flame retardant fillers to improve the dispersion, thermal stability and flame retardancy of thermoplastic polyurethane (TPU). The results show that the sonochemical approach proves to be feasible in preparation of the modified BP. The incorporated PEI chains could not only improve the air stability of the BP by forming a coating, but also promote the dispersion of the BP nanosheets in the composites. Incorporation of only 2 wt% loading of FLBP@PEI could impart an excellent flame retardancy to the filled TPU composite, e.g., compared with pure TPU, the peak heat release rate (PHRR) and total heat release (THR) of the composite decrease by 59.2% and 26.2%, respectively. Finally, a possible flame-retarding mechanism of FLBP@PEI for TPU was proposed. During material burning, in the condensed phase, the resultant BP could act as a barrier and catalyze TPU to form the stable char residues, while in the vapor phase, the generated inert small molecules of NH 3 and H 2 O from PEI and TPU and P-containing free radicals could also prevent and delay the combustion propagation.
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INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2025
·
IF 8.5
Jinpeng Wan,Jinshan Jiang,Xinyi Yu,Jie Zhou,Yukang Wang,Shuang Fu,Jie Wang,Yufei Liu,Yunsheng Dong,Adam C. Midgley,Shufang Wang
Cartilage defect repair remains a challenge for clinicians due to the limited self-healing capabilities of cartilage. Microenvironment-specific biomimetic hydrogels have shown great potential in cartilage regeneration because of their excellent biological properties. In this study, a hydrogel system consisting of p -hydroxybenzene propanoic acid-modified chitosan (PC), silk fibroin (SF) and decellularized cartilage extracellular matrix (DCM) was prepared. Under the catalysis of horseradish peroxidase (HRP), the phenol hydroxyl groups on PC and SF were crosslinked to form a hydrogel. DCM incorporation into the hydrogel facilitated an emulation of the natural cartilage extracellular matrix. The synthesized injectable hydrogels could fill irregular defects and formed network structures that promoted cell adhesion and proliferation. In vitro experiments demonstrated that the hydrogels had biocompatibility and promoted chondrogenic differentiation of bone marrow mesenchymal stem cells (BMSCs). The DCM-derived hydrogel exhibited low immunogenicity in vivo , and in the treatment of both rabbit trochlear groove cartilage defects and goat femoral condyle cartilage defects, the hydrogel accelerated the cartilage regeneration. In summary, our developed composite hydrogel system in the study offers a potential strategy for the effective repair of cartilage defects.
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PubMed
高影响因子
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
·
2025
·
IF 3.9
Tianyue Wang,Jia Liu,Bining Tian,Lulu Yan,Zhanfeng Li,Yue Tian
Engineering surface reaction kinetics plays a vital role in promoting CO2 photoreduction reaction (CO2 PRR) efficiency but remains formidably challenging. Here, we demonstrate that the regulation of the surface oxidation state is an effective strategy for the unification of the adsorption sites and reactive centers, which significantly improves the reaction kinetics and CO2 PRR efficiency. Taking advantage of the concept, we further propose p–p orbital hybridization between P atoms and the adjacent O atoms in BiVO4 at the interface constructed in the O-RP/BiVO4 Z-scheme heterostructure to create the oxidation state of RP. Theoretical calculations and spectral characterizations reveal that the interfacial atomic orbital hybridization lowers the CO2 activation energy barrier through the stabilization of the COOH* intermediate and facilitates the charge separation and transfer. Consequently, the optimized photocatalyst exhibits an excellent performance for sacrificial reagent-free CO2 PRR, with a production rate of 208 and 26.2 μmol g–1 h–1 for CO and CH4, respectively, ca. 21-fold higher than that of pristine RP and topping most of the hybrid photocatalysts with a noble metal as cocatalysts. This work provides critical insight for the design of high-efficiency photocatalysts for CO2 PRR.
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Friction
·
2024
·
IF 6.3
Deng Haoyu,Yu Tongtong,Du Changhe,Shen Ruilin,Zhao Yongkang,He Xinjian,Feng Yange,Zhang Liqiang,Wang Daoai
Ultra-low friction is crucial for the anti-friction, anti-wear, and long-life operation of nanodevices. However, very few two-dimensional materials can achieve ultra-low friction, and they have some limitations in their applications. Therefore, exploring novel materials with ultra-low friction properties is greatly significant. The emergence of ternary two-dimensional materials has opened new opportunities for nanoscale ultra-low friction. This study introduced nickel phosphorous trisulfide (NiPS 3 , referred to as NPS), a novel two-dimensional ternary material capable of achieving ultralow friction in a vacuum, into the large nanotribology family. Large-size and high-quality NPS crystals with up to 14 mm × 6 mm × 0.3 mm dimensions were grown using the chemical vapor transport method. The NPS nanosheets were obtained using mechanical exfoliation. The dependence of the NPS nanotribology on layer, velocity, and angle was systematically investigated using lateral force microscopy. Interestingly, the coefficient of friction (COF) of NPS with multilayers was decreased to about 0.0045 under 0.005 Pa vacuum condition (with load up to 767.8 nN), achieving the ultra-low friction state. The analysis of the frictional dissipation energy and adhesive forces showed that NPS with multilayers had minimum frictional dissipation energy and adhesive forces since the interlayer interactions were weak and the meniscus force was excluded under vacuum conditions. This study on the nanoscale friction of a ternary two-dimensional material lays a foundation for exploring the nanoscale friction and friction origin of other two-dimensional materials in the future.
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POLYMER DEGRADATION AND STABILITY
·
2024
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IF 6.3
Yueyue Yu,Shan Tang,Dong Feng,Yuhui Xie,Feng Wu,Delong Xie,Yi Mei,Hao Huang
The development of flame-retardant polymer materials play a vital role in reducing fire hazards and protecting both lives and property. Black phosphorus (BP) is an extremely promising flame retardant since its synergistic flame retardancy with different modifiers. Nevertheless, the issue of unven dispersion within the polymer matrix has severely restricted its practical applications. Herein, BP nanosheets functionalized with ionic liquid (IL-BP) were prepared and then compounding with EVA to improve the mechanical and the flame-retardant properties of EVA matrix. The results demonstrated enhanced compatibility of IL-BP nanosheets within the EVA matrix, leading to the 1.5 %IL-BP/EVA composite displayed a 25 % and 9.6 % increase in tensile strength and elongation at break, respectively. Remarkably, the flammability test results demonstrated that the 1.5 %IL-BP/EVA sample featured a significant decrease of 18.1 % and 21.5 % in total heat release (THR) and peak heat release rate (PHRR), respectively. Meanwhile, the composite also achieved a V-0 rating in UL-94 test and demonstrated superior resistance to melt dripping. The flame-retardant mechanisms of IL-BP/EVA composites in both gas phase and condensed phase were studied. This work provides a promising strategy to design synergetic flame retardants that simultaneously enhanced the fire safety and mechanical properties of EVA.
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危险品化学品经营许可证（带存储）