CHEMICAL ENGINEERING JOURNAL
·
2019
·
IF 8.355
Zhencai Qu,Kun Wu,Enxiang Jiao,Weilong Chen,Zhuorong Hu,Changan Xu,Jun Shi,Shan Wang,Zhiyou Tan
Similar to graphene, single or few-layer of black phosphorus (BP) are promising for its high thermal stability and unique characteristic dimension effects. However, the agglomeration problem of BP nanosheets in polymer matrix renders great difficulty toward its application. Herein, Melamine-formaldehyde (MF) is conducted to functionalize black phosphorus (BP) nanosheets. Based on density functional theory (DFT) calculations, the adsorption energy is −0.63 eV, which suggests there exists a strong mutual adsorption between BP nanosheets and MF. The functionalized BP (BP@MF) is introduced into epoxy resin (EP) to evaluate its thermal stability and flame retardant properties. BP@MF can successfully solve the aggregation phenomenon due to the improved dispersibility of BP in EP matrix. With the incorporation of 1.2 wt% BP@MF into EP matrix, the char yield is dramatically improved by 70.9%, which is attributed to the outstanding thermal stability and the catalytic charring effect of BP@MF. EP/BP@MF nanocomposites can pass the UL-94V-0 rating, and the limiting oxygen index value increases by 25.9%. The peak of heat release rate is reduced by 43.3% and the fire growth rate decreases by 41.2%, which is ascribed to the inhibition of heat transfer and isolation of oxygen by BP@MF. Meanwhile, BP@MF reveals an extremely high flame retardant efficiency by a small addition amount. Below 400 °C, MF sublimates to absorb heat and BP@MF promotes the formation of an expanded carbon layer. Above 400 °C, BP may scavenge free radicals and catalyze char formation. As one new nanofiller of 2D materials, BP has great potential to fabricate high-performance nanocomposites.
研究领域:
材料科学
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
Journal of Materials Chemistry A
·
2020
·Vol. 8
·期 25
·12705-12715
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IF 11.301
Xinming Wu,Han Wang,Zhilin Zhao,Bin Huang
Although potassium-ion batteries have been widely studied because of their low cost and high theoretical capacity, the origin of the poor potassium-ion storage kinetics and low structural stability still remains elusive mainly due to the large size of K+ (0.138 nm). Herein, we report an interstratification-assembly strategy via van der Waals interactions to design a novel BPE@V2CTx hybrid anode, wherein black phosphorene (BPE) and V2CTx MXene are derived from their individual 2D nanosheets. The coupled BPE@V2CTx hybrid anode with a 2D stacked interstratification structure and large specific surface area could efficiently take advantage of BPE and V2CTx nanosheets and create more active sites. This interstratification hybrid electrode not only provides an enlarged interlayer spacing and a three-dimensional interconnected conductive network to accelerate the K+ transport rates, but also has good tolerance to volume changes caused by phase transformations during the fast potassiation/depotassiation process. DFT calculations further confirm that potassium affinities and diffusion kinetics are significantly enhanced in the BPE@V2CTx hybrid anode, particularly in BPE@V2CF2. As a result, the hybrid anode possesses a remarkable synergetic effect and achieves a high reversible capacity of 593.6 mA h g−1 at 0.1 A g−1 and excellent cycling stability of 485/261 mA h g−1 with 91/86% capacity retention after 3000 cycles at 0.2/2.0 A g−1. This work opens a new way for the application of self-assembled hybrid electrodes in energy storage, electrocatalysis and sensors.
研究领域:
材料科学
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能源存储
·
计算化学
✓ 已验证
DOI
高影响因子
RSC Advances
·
2020
·Vol. 10
·期 46
·27538-27551
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IF 3.119
Qi Wang,Bihan Li,Ping Zhang,Wenming Zhang,Xiaoru Hu,Xiaochen Li
A novel, efficient and stable 2D black phosphorus and tungsten trioxide heterojunction (WO3–BPNs) was successfully synthesized using a combined hydrothermal, liquid phase exfoliating and co-precipitation method. The as-obtained WO3–BPNs composite was characterized by using XRD, SEM, XPS, UV-vis, etc. The results showed that the bandgap energy of the WO3–BPNs50 sample was 2.2 eV, which was lower than that of pure WO3. BPNs in the WO3–BPNs heterojunction as a co-catalyst effectively enhanced photo-generated electron–hole pairs separation. The synthesized WO3–BPNs sample significantly improved the photocatalytic performance in degrading rhodamine B (RhB) and metoprolol (MET) compared to pure WO3 and BPNs under visible-light. The maximum RhB and MET removal efficiencies were 92% and 87%, respectively, in the WO3–BPNs50 (added 50 mL BPNs dispersion) sample within 120 minutes. The relevant photocatalysis mechanisms were discussed. In addition, the intermediate products in the MET photodegradation process were investigated by LC-MS technology, and the degradation pathway of MET was proposed.
研究领域:
材料科学
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环境科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
MICROCHIMICA ACTA
·
2018
·Vol. 185
·期 12
·1-10
·
IF 5.705
Ge Yu,Camarada María Belén,Xu Lanjiao,Qu Mingren,Liang Huan,Zhao Erlong,Li Mingfang,Wen Yangping
A nanocomposite was prepared from graphene-like two-dimensional black phosphorene (BP, an allotrope of phosphorus) and nafion (Nf) treated with isopropanol (IP). A glassy carbon electrode (GCE) modified with this nanocomposite was found to be a viable sensor for voltammetric determination of clenbuterol (CLB). Unlike previously reported pure BP, the BP nanocomposite was stable towards water and oxygen. Its morphology, structure, electrochemically active surface area and electrochemical stability were investigated. The BP-Nf (IP) modified GCE displayed good electrochemical stability and electrocatalytic capacity with a low working potential of 0.94 V (vs. SCE), excellent peak current response for CLB in a linear concentration range of 0.06–24 μM with a detection limit of 3.7 nM (3σ/m) and a sensitivity of 0.14 μA·μM −1 ·cm −2 under optimal conditions. A sensing mechanism for the electro-oxidation of CLB was suggested and verified by density functional theory calculations under imitation of aqueous solution conditions. The sensor was successfully applied to the determination of CLB in bovine meat and bovine serum samples.
Highly-stable black phosphorene (BP) nanocomposite based on Nafion (Nf) was used to modify a glassy carbon electrode (GCE). It is shonw to be a viable electrochemical platform for sensitive voltammetric determination of trace clenbuterol (CLB) in bovine beef and bovine serum.
研究领域:
分析化学
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材料科学
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生物医学工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Small
·
2023
·Vol. 19
·期 52
·2303933
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IF 13.3
Yandong Wang,Yapeng Chen,Wen Dai,Zhenbang Zhang,Xiangdong Kong,Maohua Li,Linhong Li,Ping Gong,Huanyi Chen,Xinxin Ruan,Chengcheng Jiao,Tao Cai,Wenying Zhou,Zhongwei Wang,Kazuhito Nishimura,Cheng-Te Lin,Nan Jiang,Jinhong Yu
Exploiting novel strategies for simultaneously harvesting ubiquitous, renewable, and easily accessible solar energy based on the photothermal effect, and efficiently storing the acquired thermal energy plays a vital role in revolutionizing the current fossil fuel-dominating energy structure. Developing black phosphorene-based phase-change composites with optimized photothermal conversion efficiencyand high latent heat is the most promising way to achieve efficient solar energy harvesting and rapid thermal energy storage. However, exfoliating high-quality black phosphorene nanosheets remains challenging, Furthermore, an efficient strategy that can construct the aligned black phosphorene frameworks to maximize thermal conductivity enhancement is still lacking. Herein, high-quality black phosphorene nanosheets are prepared by an optimized exfoliating strategy. Meanwhile, by regulating the temperature gradient during freeze-casting, the framework consisting of shipshape aligned black phosphorene at long-range is successfully fabricated, improving the thermal conductivity of the poly(ethylene glycol) matrix up to 1.81 W m −1 K −1 at 20 vol% black phosphorene loading. The framework also endows the composite with excellent phase-change material encapsulation capacity and high latent heat of 103.91 J g −1 . It is envisioned that the work advances the paradigm of contrasting frameworks with nanosheets toward controllable structure thermal enhancement of the composites.
研究领域:
材料科学
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能源工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ELECTROANALYSIS
·
2021
·Vol. 33
·期 12
·2452-2459
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IF 3.223
Yuzhen Li,Lu Huang,Xuexiang Weng,Zhenmin Liu,Chunping You
The fast detection of 5-hydroxymethyl-2-furfural (HMF) in food industry is vital because of its toxicity and mutagenicity. A glassy carbon electrode (GCE) modified with black phosphorene (BP) nanosheets was prepared and coated with Nafion to improve stability. The electrode has excellent electrochemical stability and current response for HMF electroreduction. The good linear relationship is in the concentration range of 0.1–10 μg/mL with the detection limit of 0.012 μg/mL. HMF electroreduction is a diffusion-controlled process involving two electrons and two protons. The sensor was successfully applied to the measurement of HMF in milk with the recovery values of 92.92 %–96.33 %.
研究领域:
食品科学
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分析化学
✓ 已验证
DOI
高影响因子
Inorganic Chemistry Frontiers
·
2022
·Vol. 10
·期 2
·424-434
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IF 7.779
Jun Yang,Chenrui Zhang,Jitao Geng,Yangyang Sui,Huaixin Wei,Chencheng Sun,Hongbo Geng,Yushen Liu
Herein, in situ chemical anchoring of nickel cobalt selenide (Ni3Se4/CoSe2) on two-dimensional (2D) black phosphorene is creatively proposed via a facile approach. The introduction of 2D black phosphorene brings abundant interfacial effects and provides fully exposed active sites. The construction of such a heterogeneous structure (BP@Ni3Se4/CoSe2) effectively buffers the volume expansion effect caused by Na ion insertion and promotes electron/ion transfer during cycling. Therefore, the BP@Ni3Se4/CoSe2 electrode exhibits superior sodium storage properties in half cells, such as a high stable discharge specific capacity (about 358.8 mA h g−1 at 1 A g−1 after 100 cycles), excellent cycling stability (up to 2500 cycles, the capacity retention rate close to 82%) and high rate performance (from the initial 0.2 A g−1 to the final 20 A g−1 and the total capacity retention rate is about 76%). In addition, BP@Ni3Se4/CoSe2 achieved a high energy density of 163.7 W h kg−1 at the power density of 136.4 W kg−1 in the sodium-ion battery full battery test. Such high performance of BP@Ni3Se4/CoSe2 is attributed to its excellent reaction kinetic characteristics. The investigation of the sodium storage mechanism of BP@Ni3Se4/CoSe2 is conducted in detail.
研究领域:
材料科学
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电化学
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能源存储
✓ 已验证
产品关联
DOI
高影响因子
COMPOSITE INTERFACES
·
2021
·
IF 2.952
Ce Li,Xuemei Cui,Xing Gao,Shangzhou Liu,Qi Sun,Huiqin Lian,Lei Zu,Yang Liu,Xiaodong Wang,Xiuguo Cui
In the field of flame retardant polymer, it is an important challenge by the addition of a small amount of flame retardant to obtain the flame retardancy that meet the application requirements. In this work, a novel nanoscale flame retardant, phosphorene micro-flake was prepared by electrochemical exfoliation of black phosphorus and spiral spray drying technology, which was employed to improve the flame retardancy of the epoxy resin. The influence of phosphorene micro-flakes on the fire-retardant action of epoxy resin-based composite were investigated with a UL-94 test supplemented by thermogravimetric analysis. It was found that the flame retardancy of the phosphorene micro-flakes/epoxy nanocomposite increased with the content of phosphorene micro-flakes. In the UL-94 test, when the content of phosphorene micro-flake was 0.94 wt%, the flame retardancy of phosphorene micro-flake/epoxy nanocomposite achieved the UL-94 V-0 rating, with the bending strength and bending modulus of the nanocomposite were enhanced by more than 30% compared with the neat epoxy resin. Similarly, the bending strength and bending modulus of the nanocomposite increases first and then decreases when the content of black phosphorene micro-flakes increased in the range of 0–0.94 wt%, and that of nanocomposite with 0.2 wt% of black phosphorene micro-flake was more than two times that of nanocomposite without phosphorene. Obviously, as a nano flame retardant, black phosphorene can improve simultaneously both mechanical properties and flame retardancy of the polymer, which attribute to the size effect of nanostructure of black phosphorene.
研究领域:
材料科学
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聚合物工程
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纳米技术
✓ 已验证
DOI
高影响因子
COMPOSITES PART B-ENGINEERING
·
2020
·
IF 7.635
Zhencai Qu,Chang-an Xu,Zhuorong Hu,Yue Li,Huifa Meng,Zhiyou Tan,Jun Shi,Kun Wu
Owing to its intrinsic structure, thermal stability and dimension effects, black phosphorene (BP) has great potential in manufacturing advanced-performance polymer composites . However, the shortcoming of instability and re-agglomeration enables great challenges toward its application. Herein, a lanthanide metal ligand ((CF 3 SO 3 ) 3 Er) has been employed to decorate few-layer BP nanosheets . By means of density functional theory (DFT), there is a high adsorption energy of −1.49 eV in the system, which confirms a powerful adsorbing effect is existed between BP and (CF 3 SO 3 ) 3 Er . Due to the charge transfer from BP to (CF 3 SO 3 ) 3 Er molecule, the lone-pair electrons of BP are passivated, thereby the decorated BP (Er-BP) exhibits robust stability in ambient conditions and common solvents. Whereafter, the Er-BP is loading into epoxy resin (EP) to manufacture EP-based composites. The Er-BP can not only effectively enhance the dispersion of BP in EP substrate, but also catalyze the curing process of EP nanocomposites . When the amount of Er-BP in epoxy is 3.0 wt%, the residual char content is clearly improved by 75.42%, which is attributed to the coadjutant catalytic charring function between BP and (CF 3 SO 3 ) 3 Er. EP/Er-BP 3.0 sample can meet the requirement of UL-94 V-0 testing, and the limiting oxygen index (LOI) value is improved from 24.7% to 30.3%. Meanwhile, there is a 61.37% reduction in the peak heat release rate (PHRR) and a 36.68% decrease in the total heat release (THR). The smoke production rate (SPR) and total smoke production (TSP) are also decreased by 62.90% and 55.94%, respectively. Particularly, the amount of CO released per second (COP) is dramatically reduced by 74.24%, implying that the heat and smoke release has been significantly suppressed due to the production of protective char layer.
研究领域:
材料科学
·
化学工程
✓ 已验证
DOI
高影响因子
COMPOSITES SCIENCE AND TECHNOLOGY
·
2024
·
IF 8.3
Kunxin Wang,Zhencai Qu,Hui Yang,Guoming Yuan,Xiu-e Li,Zhijun Liu,Yanhan Tao,Yang Li,Kun Wu,Jun Shi
Biobased carboxymethyl chitosan-modified black phosphorene (BP-CMC) was prepared through an amidation reaction between amino group functionalized black phosphorene (NH 2 -BP) and CMC. Density functional theory (DTF) express that the adsorption energy between urea and phosphene is −6.28 eV, indicating a strong interaction. The resulting BP-CMC was further applied to reinforce the mechanical, flame-retardant and thermal conductivity performance of honeycomb cellulose nanofiber (CNF) film via vacuum filtration. Cone calorimetry test (CCT) result exhibits that the introduction of 30 wt% BP-CMC significantly promoted the fire safety of CNF. For instance, a 98.41% reduction in smoke production rate (SPR), 92.00 % decline in CO release and a 61.31% decrease in heat release rate (HRR) were observed compared to neat CNF. Furthermore, Thermogravimetric infrared (TG-IR) indicates a significant decrease in the release of flammable gases. Raman spectra verify that the incorporation of 30 wt% BP-CMC improves the graphitization degree of residual chars, thus limiting the transfer of heat and oxygen. The improvement in fire safety is attributed to the formation of an intumescent flame-retardant system, which is rich in carbon source (CMC), acid source (BP) and gas source (amino). Simultaneously, the introduction of 30 wt% BP-CMC into CNF leads to considerable enhancement in thermal conductivity (up to 17.49 %), thermal diffusion (utmost to 43.45 %) and heat capacity (increased by 19.23 %). Moreover, the 30 wt % addition of BP-CMC into CNF possesses excellent mechanical properties with the improvement of toughness (increased by 143.50 %) and tensile strength (increased by 140.90 %). This strategy not only provides a new strategy for functionalizing BP but also upgrades the application potential of BP nanosheets in the fire safety of polymer composite films.
研究领域:
材料科学
·
生物材料
·
纳米技术
✓ 已验证
产品关联
DOI
高影响因子
ELECTROCHIMICA ACTA
·
2018
·
IF 5.116
Yuan Xiang,María Belén Camarada,Yangping Wen,Hao Wu,Jinyin Chen,Mingfang Li,Xiaoning Liao
There are few reports on the electrochemical detection of ochratoxin A (OTA) using chemically modified electrode owing to the OTA poor electrochemical activity and strong fouling effect towards electrode surface. In this study, a novel nanosensor based on two-dimensional (2D) layered black phosphorene (BP) was successfully developed for the simple voltammetric detection of OTA in grape juice and red wine samples. The BP modified nanosensor showed a good linear electrochemical response towards OTA in a concentration range of 0.3–10 μg/mL with a detection limit of 0.18 μg/mL (S/N = 3) under the optimal conditions. A mechanism for the electrocatalytic oxidation of OTA was proposed and verified by density functional theory calculations that the oxidation of OTA is an irreversible electrochemical response with an adsorption-controlled process, and the nitrogen atom of the amide is oxidized to N + O − with two protons and two electrons. The proposed electrochemical sensor demonstrated good electrochemical stability, superior anti-fouling property and excellent sensitivity towards OTA detection. A satisfactory practicability with recoveries between 98.8% and 103.3% was obtained in real samples determination. This work puts forward a new sensing platform based on the two-dimensional layered graphene-like nanosensor for the electrochemical determination of mycotoxins in edible agricultural food.
研究领域:
食品科学
·
分析化学
✓ 已验证
产品关联
DOI
高影响因子
MOLECULES
·
2022
·Vol. 27
·期 22
·8064
·
IF 4.927
Xiaoqing Li,Lisi Wang,Baoli Wang,Siyue Zhang,Meng Jiang,Wanting Fu,Wei Sun
To design a new electrochemical horseradish peroxidase (HRP) biosensor with excellent analytical performance, black phosphorene (BP) nanosheets and single-walled carbon nanotubes (SWCNTs) nanocomposites were used as the modifier, with a carbon ionic liquid electrode (CILE) as the substrate electrode. The SWCNTs-BP nanocomposite was synthesized by a simple in situ mixing procedure and modified on the CILE surface by the direct casting method. Then HRP was immobilized on the modified electrode with Nafion film. The electrocatalysis of this electrochemical HRP biosensor to various targets was further explored. Experimental results indicated that the direct electrochemistry of HRP was realized with a pair of symmetric and quasi-reversible redox peaks appeared, which was due to the presence of SWCNTs-BP on the surface of CILE, exhibiting synergistic effects with high electrical conductivity and good biocompatibility. Excellent electrocatalytic activity to trichloroacetic acid (TCA), sodium nitrite (NaNO2), and hydrogen peroxide (H2O2) were realized, with a wide linear range and a low detection limit. Different real samples, such as a medical facial peel solution, the soak water of pickled vegetables, and a 3% H2O2disinfectant, were further analyzed, with satisfactory results, further proving the potential practical applications for the electrochemical biosensor.
研究领域:
生物化学
·
材料科学
·
分析化学
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）