MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
·
2020
·
IF 3.085
Wanying Liu,Yabo Zhu,Xiaokuan Ban,Shasha Wang,Hua Zhu
In this study, a new method is proposed for the preparation of Ag/black phosphorus composite in an anhydrous system. Before the preparation, black phosphorus (BP) bulk is firstly preprocessed by a wet ball milling method combined with sodium hydroxide, so that BP can be functionalized and a large proportion (80%) of micro-multilayer BP flakes (MBP) with hydroxyl groups can be used. Then the addition of ethylene glycol and polyvinylpyrrolidone into the synthesis system prevents agglomeration of hydroxylated MBP flakes and enables the uniform distribution of Ag + on BP flakes, thereby yielding an Ag/MBP composite with Ag nanoparticles uniformly dispersed on BP flakes. XRD , Raman, and XPS results indicate that the BP with its lattice structure is retained in Ag/MBP. In fact, neither Ag nor hydroxylated MBP shows photocatalytic activity ; however, in the presence of Ag/MBP, methyl orange (MO) is completely degraded within 85 min under irradiation with light of wavelength 300–2500 nm. The well dispersed Ag nanoparticles enhance the absorption of high-intensity light and facilitate the transfer of photogenerated e − from BP, finally facilitating the separation of h + and e − . Superoxide radical (·O 2 − ) and holes (h + ) are identified to be the active radicals directly involved in the degradation of MO.
研究领域:
材料科学
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
·
2020
·Vol. 31
·期 12
·9543-9549
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IF 2.22
Liu Wanying,Zhu Yabo,Xu Xiang,Wang Shasha,Zhang Xinxi
The wet ball milling (WBM) method is, for the first time, used for the exfoliation of bulk black phosphorus (BP) to obtain few-layer black phosphorus (FBP). Before that, the rational solid–liquid ratio of raw material is determined to be 1:1 (mg/mL) for the popular ultrasound liquid exfoliation (ULE). Obviously, the high proportion of organic solvent used in ULE will lead to serious environmental pollution. Compared with ULE, the solid/liquid ratio for WBM exfoliation is 100:1 (mg/mL) showing its advantage of less demand for organic solvent. In addition, different types of organic solvents are used to determine the proper organic solvent for WBM exfoliation. Ultraviolet–visible–near-infrared spectroscopy, X-ray diffraction, transmission electron microscopy, and laser particle size analyzer are used to comprehensively characterize the layer numbers, morphology size, and phase structure of FBP yielded by WBM exfoliation. The results show that dimethyl sulfoxide (DMSO) is the suitable organic solvent for BP exfoliation; FBP flakes with 3–5 layers and micron size are obtained by WBM exfoliation.
研究领域:
材料科学
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纳米技术
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2019
·
IF 4.175
Wanying Liu,Yabo Zhu,Yuting Cui,Xiaokuan Ban,Qian Xu,Xinxi Zhang
Ni 2 P and black phosphorus (BP) exhibit their respectively excellent performance in capacitance. Flake material BP is a good phosphorus (P) source candidate for the synthesis of Ni 2 P, and is also a good carrier that can contribute to the good dispersion of Ni 2 P particles. Herein, BP flakes were prepared first by wet milling method and Ni 2 P/BP composites with different reactant mole ratio for nickel (Ni) to P were prepared by a facial solvothermal method. The electrochemical property of milled BP flakes and Ni 2 P/BP composites were investigated by cyclic voltammetry , charge/discharge and electrochemical impedance spectroscopy . It was found that the Ni 2 P/BP composite, with an appropriate reactant mole ratio for Ni to P, had the high capacity of 1215 F/g at the current density of 1 A/g and the remained stable capacity of 590 F/g after 1000 circle at the current density of 2 A/g, exhibiting good capacitance energy storage performance.
研究领域:
材料科学
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电化学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2020
·
IF 7.489
Ting Song,Linquan Hou,Bei Long,Atif Ali,Guo-Jun Deng
The fabrication of ultrathin MXene (Ti 3 C 2 )-based photocatalysts is highly intriguing as the charges can vectorially transfer along the two-dimensional (2D) direction despite being challenging. Herein, ultrathin Ti 3 C 2 (TiC) nanosheets with excellent conductivity are rationally introduced to ultrathin metal-free 0D/2D black phosphorus (BQ)/ultrathin g-C 3 N 4 (UCN) heterojunction for improving photocatalytic H 2 production activity. The optimized BQ/TiC/UCN composite displayed obvious advantages such as the strong interfacial contact and enhanced visible-light capture. Importantly, the incorporation of TiC nanosheets substantially accelerates charge transfer to fast separation of photoinduced carriers between BQ and UCN . The optimized BQ/TiC/UCN composite exhibited 47.2 and 19.4 folds higher photocatalytic activity (18.42 mmol h −1 g −1 ) than that of bulk g-C 3 N 4 (BCN) and UCN, respectively. The microstructure, composition, and optical properties of BQ/TiC/UCN composite were carefully characterized. The current research results may furnish fresh insights into the exploration of MXene (Ti 3 C 2 )-based catalysts with high solar energy utilization.
研究领域:
材料科学
·
能源化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Polymers
·
2023
·Vol. 15
·期 7
·1655
·
IF 5
Yongzheng Zhao,Yan Li,Jiaxuan Li,Yifan Xiao,Wenmin Mu,Zhongwei Wang,Liang Song,Jinhong Yu
Few-layer black phosphorus (BP)- and red phosphorus (RP)-modified diglycidyl ether of bisphenol A-based epoxy resins (EP) was prepared with 4,4′-diaminodiphenylsulfone as a curing agent. The thermal stability and flame-retardant properties of the modified EPs were compared. Both BP and RP were able to improve the flame-retardant properties of EPs, while the BP showed higher flame-retardant efficiency than RP. As a two-dimensional nanomaterial, BP exhibited good compatibility, high flame-retardant efficiency, and negligible impact on the mechanical and thermal stability of EP. Pyrolysis-gas Fourier-transform infrared spectroscopic analysis of EP showed that the addition of BP significantly inhibited the release of pyrolysis products in the gas phase. The modes of action for flame-retardant BPs in gas phase and condensed phase were proposed.Keywords:few-layer black phosphorus;flame retardant;epoxy resin
研究领域:
材料科学
·
化学工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
APPLIED SURFACE SCIENCE
·
2019
·
IF 5.155
Quan Zhang,Juhua Zhang,Lu Zhang,Mengting Cao,Fengli Yang,Wei-Lin Dai
To make persistent efforts at enhancing hydrogen evolution driven by solar energy, this work, for the first time, had introduced flower-like ZnIn 2 S 4 coupled with black phosphorus (BP) as efficient photocatalyst for hydrogen evolution with photo-deposited Pt assisted under visible light irradiation. The hydrogen evolution efficiency of BP, ZnIn 2 S 4 , 0.5%BP/ZnIn 2 S 4 , 0.5%Pt/BP, 0.5%Pt/ZnIn 2 S 4 and 0.5%Pt/0.5%BP/ZnIn 2 S 4 photocatalysts were successively conducted and results showed that both BP and Pt played an important role in enhancing the photocatalytic hydrogen evolution rate. Therefore, the ternary 0.5%Pt/0.5%BP/ZnIn 2 S 4 composite exhibited the strongest hydrogen production efficiency at 1278 μmol/g/h, about 10 times higher than that of pristine ZnIn 2 S 4 (131 μmol/g/h) and represented a highly stable characteristic after suffering four recycles. The promoting hydrogen evolution of ternary photocatalyst could be ascribed to the unique bandgap and larger two-dimensional plane structure of BP, which provided abundant landing sites for the anchor of flower-like ZnIn 2 S 4 , thus leading to a well-inhibited recombination and efficient separation of photogenerated electrons and hole pairs between ZnIn 2 S 4 and BP. The remarkable photocatalytic hydrogen evolution performance and prominent stability all indicated that 0.5%Pt/0.5%BP/ZnIn 2 S 4 was a promising photocatalyst candidate for solar hydrogen production.
研究领域:
材料科学
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能源科学
✓ 已验证
产品关联
DOI
高影响因子
Polymers
·
2021
·Vol. 13
·期 21
·3635
·
IF 4.329
Shaoling Lin,Boqing Tao,Xiaomin Zhao,Guohua Chen,De-Yi Wang
Recently, lots of effort has been placed into stabilizing black phosphorus (BP) in the air to improve its compatibility with polymers. Herein, BP was chemically functionalized by aliphatic amine (DETA), aromatic amine (PPDA) and cyclamine (Pid) via a nucleophilic substitution reaction, aiming to develop an intensively reactive BP flame retardant for epoxy resin (EP). The -NH2group on BP-DETA, BP-PPDA and BP-Pid reacted with the epoxide group at different temperatures. The lowest temperature was about 150 °C for BP-DETA. The impacts of three BP-NH2were compared on the flame retardancy and thermal decomposition of EP. At 5 wt% loading, EP/BP-NH2all passed UL 94 V 0 rating. The limiting oxygen index (LOI) of EP/BP-PPDA was as high as 32.3%. The heat release rate (HRR) of EP/BP-DETA greatly decreased by 46% and char residue increased by 73.8%, whereas HRR of EP/BP-Pid decreased by 11.5% and char residue increased by 50.8%, compared with EP. Average effective heat of combustion (av-EHC) of EP/BP-Pid was lower than that of EP/BP-DETA and EP/BP-PPDA. In view of the flame-retardant mechanism, BP nanosheets functionalized with aliphatic amine and aromatic amine played a dominant role in the condensed phase, while BP functionalized with cyclamine was more effective in the gas phase.Keywords:black phosphorus;functionalization;flame retardancy;epoxy resin
研究领域:
材料科学
·
化学工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CRYSTENGCOMM
·
2017
·Vol. 19
·期 47
·7207-7212
·
IF 3.474
Zhiyan Chen,Yabo Zhu,Jia Lei,Wanying Liu,Yunke Xu,Peizhong Feng
In the preparation of black phosphorene (BP) by means of low-pressure mineralization, the complex temperature program makes the synthesis mechanism complicated and confusing. Herein, orthorhombic BP crystals were successfully synthesized by low-pressure mineralization and the phase transitions at every stage were revealed systematically and were accurately confirmed via a series of interference experiments and supported by structure characterization. Additionally, the nucleation agents and nucleation sites were systematically investigated. Based on this, we found that the synthesis of BP is a process of stage-by-stage phase-induction. At first, red phosphorus (RP) is transformed to Hittorf's phosphorus (HP) without the assistance of mineralizers. Subsequently, HP is transformed into BP at the cooling stage. Moreover, Sn24P19.3I8 should work as the sole nucleation agent, and leads to BP crystal nucleation and growth to form large crystals in the subsequent heat preservation stage. Also, the nucleation site lies in the product region opposite the source region. In addition, the radial morphology of the BP crystal bunches under an RP/SnI4/Sn (granule) system was revealed firstly, and taking the straps out from the BP bunches is convenient for exfoliating.
研究领域:
材料科学
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凝聚态物理
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纳米技术
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晶体生长
·
功能材料
✓ 已验证
DOI
高影响因子
BIOELECTROCHEMISTRY
·
2025
·
IF 4.5
Lisi Wang,Xiaoqing Li,Baoli Wang,Fan Shi,Brij Mohan,Mansoor Ahmad,Wei Sun
Glyphosate (GLY) is one of the most widely used herbicides, and the presence of its residues in food samples poses a threat to human health. Developing a monitoring system could help address food safety concerns. This study presents an innovative electrochemical sensing platform to detect GLY, which employs molybdenum disulfide (MoS 2 ) and black phosphorene (BP) nanocomposites (MoS 2 @BP) with horseradish peroxidase (HRP) for the working electrode modification. The MoS 2 @BP nanocomposite is synthesized using a hydrothermal method, and its characteristics are investigated through different methods including scanning electron microscopy, X-ray photoelectron spectroscopy, and X-ray diffraction methods. The presence of BP enhances electrical conductivity and increases specific surface area, while MoS 2 improves the electrochemical properties of the composites and provides a protective effect on BP. The modification of MoS₂@BP on the electrode surface helps to accelerate the direct electron transfer of HRP with enhanced electrochemical responses. Furthermore, the incorporation of amino acid residues from HRP significantly enhances the recognition of GLY, thereby improving the selectivity and sensitivity of this electrochemical sensor. The sensor operates effectively within a linear concentration range from 0.118 nmol/L to 20.65 μmol/L, with a low detection limit of 0.0393 nmol/L (3σ). Furthermore, the sensor is successfully applied to detect GLY in real cornmeal samples with satisfactory results, demonstrating its potential applications in food safety monitoring.
研究领域:
食品科学
·
环境科学
·
生物化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
npj 2D Materials and Applications
·
2021
·Vol. 5
·期 1
·1-12
·
IF 11.106
Ren Xiaoyong,Yang Xiao,Xie Guoxin,He Feng,Wang Rong,Zhang Chenhui,Guo Dan,Luo Jianbin
Superlubricity has recently raised an increasing interest owing to its great potential in energy saving and environmental benefits. Yet how to obtain stable superlubricity under an ultrahigh contact pressure (>1 GPa) still remains a challenge. Here, we demonstrate that robust liquid superlubricity can be realized even under a contact pressure of 1193 MPa by lubrication with partially oxidized black phosphorus (oBP) nanosheets. The analysis indicates that the oBP nanosheets that absorb large amounts of water molecules are retained at the friction interface and transform the friction pairs interface to that between the oBP nanosheets. Molecular dynamics simulation demonstrates that water molecules could be retained at the friction interface even under the ultrahigh contact pressure owing to the abundant P=O and P–OH bonds formed on the oBP nanosheet surfaces, contributing to the achievement of stable superlubricity under the ultrahigh contact pressure. This work has the potential of introducing the liquid superlubricity concept in diverse industrial applications involving high-contact-pressure operating conditions.
研究领域:
材料科学
·
摩擦学
✓ 已验证
DOI
高影响因子
Materials
·
2024
·Vol. 17
·期 16
·3988
·
IF 3.1
Liyuan Cheng,Qinglin Quan,Liang Hu
Van der Waals (vdW) heterostructures are mainly fabricated by a classic dry transfer procedure, but the interface quality is often subject to the vdW gap, residual strains, and defect species. The realization of interface fusion and repair holds significant implications for the modulation of multiple photoelectric conversion processes. In this work, we propose a thermally mismatched strategy to trigger broad-band and high-speed photodetection performance based on a type-I heterostructure composed of black phosphorus (BP) and FePS3(FPS) nanoflakes. The BP acts as photothermal source to promote interface fusion when large optical power is adopted. The regulation of optical power enables the device from pyroelectric (PE) and/or alternating current photovoltaic (AC–PV) mode to a mixed photovoltaic (PV)/photothermoelectric (PTE)/PE mode. The fused heterostructure device presents an extended detection range (405~980 nm) for the FPS. The maximum responsivity and detectivity are 329.86 mA/W and 6.95 × 1010Jones, respectively, and the corresponding external quantum efficiency (EQE) approaches ~100%. Thanks to these thermally-related photoelectric conversion mechanism, the response and decay time constants of device are as fast as 290 μs and 265 μs, respectively, superior to current all FPS-based photodetectors. The robust environmental durability also renders itself as a high-speed and broad-band imaging sensor.
研究领域:
材料科学
·
光电子学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
NANOTECHNOLOGY
·
2021
·Vol. 32
·期 45
·455701
·
IF 3.874
Guoyong Wang,Guowen Qian,Jia Yao,Weiliang Cai,Shuping Peng,Cijun Shuai
Black phosphorous (BP) is recognized as an effective reinforcement for polymer scaffold because of its excellent mechanical property and biocompatibility. Nevertheless, its poor stability in physiological environment limits its application in bone repair. In this work, BP was modified with dopamine by self-polymerization approach (donated as BP@PDA) to improve its stability, and then was introduced into poly-L-lactic acid (PLLA) scaffold fabricated by selective laser sintering technology. Results showed the compressive and tensile strength of PLLA/BP@PDA scaffold were improved by 105% and 50%, respectively. The enhanced strength was ascribed to the increased stability of BP and the improved compatibility of BP@PDA with PLLA matrix after modifying with polydopamine. Simultaneously, the bioactivity of PLLA scaffold was significantly improved. It was attributed to that BP@PDA provided the sustained source of ions which could capture Ca2+ ions from physiological medium to facilitate in situ biomineralization, thereby promoting cell adhesion, proliferation and differentiation. This study demonstrated the great potential of BP@PDA in bone repair.
研究领域:
生物材料学
·
组织工程学
✓ 已验证
DOI
PubMed
高影响因子
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