Journal of Materials Research and Technology-JMR&T
·
2022
·
IF 6.267
Yiyang Chen,Hongjuan Wu,Rui Duan,Kailun Zhang,Weihua Meng,Yan Li,Hongqiang Qu
Sn-doped graphene nanoplatelets (GnPSn) was successfully synthesized by wet ball milling method from expandable graphite and Sn powder. The surface morphology, thickness, crystal structure and chemical structure were comprehensive characterized. Epoxy resin (EP) composites (EP/GnPSn or EP/HPCTP/GnPSn) were prepared by adding GnPSn alone or GnPSn and hexaphenoxy cyclotriphosphazene (HPCTP) together to EP to improve the fire resistance and smoke suppression. EP/6.3wt%HPCTP/2.7wt%GnPSn composite had the best flame retardancy with LOI value of 33.6%, UL-94 of V 0 grade, peak heat release rate and total heat release reduced by 44.80% and 23.93%, respectively. The results of thermogravimetry analysis, Raman spectroscopy and Fourier transform infrared spectroscopy showed that HPCTP and GnPSn can react to form Sn–O–P bonds to promote the compactness of the residual char in condensed phase, thereby preventing the combustion of EP matrix.
✓ 已验证
产品关联
DOI
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2022
·
IF 5.518
Liang Cheng,Shuilai Qiu,Jing Wang,Weijian Chen,Jingwen Wang,Wenxiang Du,Lei Song,Yuan Hu
Human health is being seriously harmed by tumors. In order to obtain excellent anti-tumor effects, platinum (Pt) nanozyme-modified black phosphorus (BP) loading with L -Arginine (LArg) (BPPL) is prepared to realize nitric oxide (NO) therapy and sonodynamic therapy (SDT), achieving a synergistic effect to therapy. In this system, BP is utilized as the sonosensitizer. Pt can catalyze the decomposition of hydrogen peroxide (H 2 O 2 ) to produce oxygen (O 2 ) and relieve the hypoxic environment of tumor tissue. The increase in O 2 concentration is conducive to the generation of ROS under ultrasound (US) stimulation. The deposition of precious metals hinders the recombination of some electrons (e ) and holes (h + ), and further improves the yield of reactive oxygen species (ROS). LArg is employed as the exogenous NO supplementation. Under the stimulation of US and ROS, NO is generated to cause further cell apoptosis. Tests in vitro and in vivo have proved the great potential of the combination of SDT and gas therapy in tumor treatment.
✓ 已验证
产品关联
DOI
高影响因子
Green Energy & Environment
·
2022
·
IF 12.781
Hao Ouyang,Shan Min,Jin Yi,Xiaoyu Liu,Fanghua Ning,Jiaqian Qin,Yong Jiang,Bing Zhao,Jiujun Zhang
Thin and flexible composite solid-state electrolyte (SSE) is considered to be a prospective candidate for lithium-oxygen (Li-O 2 ) batteries with the aim to address the problems of unsatisfied safety, terrible durability as well as inferior electrochemical performance. Herein, in order to improve the safety and durability, a succinonitrile (SN) modified composite SSE is proposed. In this SSE, SN is introduced for eliminating the boundary between ceramic particles, increasing the amorphous region of polymer and ensuring fast ionic transport. Subsequently, the symmetric battery based on the proposed SSE achieves a long cycle life of 3000 h. Moreover, the elaborate cathode interface through the SN participation effectively reduces the barriers to the combination between lithium ions and electrons, facilitating the corresponding electrochemical reactions. As a result, the solid-state Li-O 2 battery based on this SSE and tuned cathode interface achieves improved electrochemical performance including large specific capacity over 12,000 mAh g −1 , enhanced rate capacity as well as stable cycle life of 54 cycles at room temperature. This ingenious design provides a new orientation for the evolution of solid-state Li-O 2 batteries.
✓ 已验证
产品关联
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2022
·
IF 9.136
Yanqi Liu,Bo Jiang,Jiaming Luo,Jing Yang,Peichao Lian,Xinzhi Chen,Li Ding,Yi Mei
Two-dimensional (2D) materials bring a great opportunity to fabricate molecular sieving membranes that can potentially break the permeability-selectivity trade-off. Although 2D laminar membranes with interlayer nanochannels as molecular sieving channel were widely studied, for most of reported 2D laminar membranes, it is of a great challenge to fabricate highly ordered interlayer nanochannels for mass transport. Herein, we report a novel kind of black phosphorene membrane which is made from the stacking of highly ordered 2D black phosphorene nanoflakes. The as prepared black phosphorene membrane shows H 2 permeance > 1000 GPU and H 2 /CO 2 selectivity > 100 for H 2 /CO 2 mixed gas, demonstrating an extremely high gas separation performance. The DFT calculation results demonstrate that the interlayer galleries in the black phosphorene membrane allow the H 2 passing through easily while block the other gases with bigger kinetic diameters, matching well with the experimental findings. The present results indicate that the interlayer galleries in the black phosphorene membrane can be applied as molecular sieving channels for gas separation.
✓ 已验证
产品关联
DOI
高影响因子
Food Analytical Methods
·
2022
·Vol. 15
·期 6
·1471-1481
·
IF 3.498
Qiu Daoyang,Wang Xiaoqiang,Wen Yangping,Zeng Yifang,Li Weiqiang,Zhao Li,Chen Lili,Xiong Jianhua,Tang Kaijie
We explored a low-cost wireless smart portable sensor based on a disposable laser-induced porous graphene (LIPG) flexible substrate electrode decorated by gold nanoshells (AuNSs) for a simple and rapid electrochemical detection of sulfonamides (SAs). The LIPG was prepared by the one-step computer-controlled laser direct-writing patterning techniques on polyimide (PI) substrate, and the AuNSs were facilely modified onto the surface of LIPG substrate electrode by the drop-coating. The electrode displayed an excellent electrochemical response towards sulfanilamide (SN) in a linear range from 0.4 to 100 μM with a low limit of detection of 0.035 μM; recovery ranges from 96.04 to 105.00% in fish and shrimp samples using the traditional large electrochemical workstation. Other three SAs were also detected, and their results were similar with SN. The portable mini electrochemical workstation with the wireless bluetooth transmission displayed better feasibility, practicability, and superiority in the rapid on-site supervision of SAs in food safety in comparison with the traditional large electrochemical workstation with the wire transmission.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF ELECTRONIC MATERIALS
·
2022
·Vol. 51
·期 2
·486-494
·
IF 2.047
Wang Xiaochun,Zhou Zhiwei,Lin Xuesong
In this work, we introduced two-dimensional (2D) WSe 2 with the lowest heat conductivity to enhance thermoelectric properties of the non-toxic and cost-effective SnTe. On one hand, the improved power factor can be attributed to the enhancement of Seebeck coefficient due to the decrease of low-energy carriers and minority carriers by the addition of WSe 2 -SnTe p - p -type heterojunction interface barriers. On the other hand, the thermal conductivity also decreased sharply by the heightened phonon scattering from the high-density stacking faults and multiscale hierarchical architectures. Ultimately, benefiting from the dual regulation effect of the introduction of 2D WSe 2 on the electro-acoustic decoupling, an improved figure of merit ( ZT ) of 1.0 is achieved for the composition of SnTe + 6 wt% WSe 2 at 873 K, which is enhanced by 134% in comparison with the pure SnTe sample. Moreover, the meaningful attempt represents an effective and feasible strategy for mixing SnTe with other compounds by the method of ball milling. Graphical Abstract
✓ 已验证
产品关联
DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2021
·
IF 6.707
Lingxin He,Xin Jiang,Xia Zhou,Zhaoxin Li,Fukai Chu,Xin Wang,Wei Cai,Lei Song,Yuan Hu
The low exfoliation yield and large solvents consumption have become the major issue that limits the commercial application of two-dimensional nanomaterials. Emerging as an effective and environmentally friendly approach, electrochemical exfoliation has been attached by extensive concern. Hence, a simple and environmentally friendly two-electrode electrochemical exfoliation method was put forward to prepare black phosphorus-MXene (BP-Ti 3 C 2 ) nanohybrids without consumption of any organic solvents. The integration of BP and Ti 3 C 2 also imparts higher fire safety and mechanical properties to waterborne polyurethane (WPU). With the incorporation of 2.0 wt% BP-Ti 3 C 2 , the peak heat release rate, total heat release, total smoke production and total CO 2 yield of WPU were decreased by 42.2%, 12.9%, 12.6% and 16.5%, respectively, exhibiting a great flame retardancy effect. The employment of electrochemical exfoliation method towards BP and Ti 3 C 2 nanosheets not only imparts higher fire safety to polymer composites, but also provides a referable environmentally friendly preparation for two-dimensional nanomaterials.
✓ 已验证
产品关联
DOI
高影响因子
MICROCHEMICAL JOURNAL
·
2021
·
IF 4.821
Yuxuan Qin,Chen Hang,Liping Huang,Haiyun Cheng,Junqing Hu,Wenyao Li,Jianghong Wu
In this study, Sn@C composite was fabricated from ZnSn(OH) 6 through a green thermal calcination method. For the first time, this composite was used as a modifier on glassy carbon electrode (GCE) to construct an electrochemical biosensor to detect acetaminophen (AC). The Sn@C sensor exhibited distinctly enhanced performance in electrochemical response to AC compared with bare GCE, GCE modified with Sn and GCE modified with graphene. The linear range is 0.2–100 μM and the limit of detection (LOD) is 0.020 μM based on DPV analysis. The excellent electrochemical behavior can be ascribed to the outstanding conductivity of metal Sn and carbon, and the strong adsorption of the carbon layer to AC. Most importantly, the chemical interaction between Sn and C through Sn-C bond facilitated the electron transfer process in the electrooxidation of AC. Finally, the Sn@C sensor was successfully applied in pharmaceutical samples and spiked serum samples to detect AC with satisfactory recoveries.
✓ 已验证
产品关联
DOI
高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2023
·Vol. 33
·期 42
·2305965
·
IF 19
Xinfeng Tang,Yanhua Zhu,Delong Duan,Xingwu Zhai,Yujian Xia,Tao Xu,Qian Liu,Hui Zhang,Min Zhou
Due to the deep biological penetrability and therapeutic depth, the photothermal therapy over second near-infrared region (NIR-II) is booming against deep-seated tumors. Intensive endeavors are committed to looking for suitable photothermal agents (PTAs), but the progress seems not so satisfied toward the choice of PTA dosage. Herein, a comprehensive parameter, incident photon-to-thermal conversion coefficient (IPTCE), is used to evaluate the overall conversion of PTAs at different dosage, which will benefit for determining the optimized dosage of PTAs in pursuit of complete healing together with reduced long-term damages of nanodrugs. To prove the possibility, a series of anionic solid solution MXenes are chosen as hosts due to their versatile chemical compositions and correspondingly tunable light response. By deconvoluting fundamental structure–composition–property relationships, anionic regulation with extra electron injection leads to tunable free carrier densities and enhanced NIR-II harvesting. Ti 3 C 1.23 N 0.77 with high-level nitrogen exhibits extraordinary extinction coefficient (43.5 L g −1 cm −1 ) than other MXenes. The parameter of IPTCE can guide the choice of PTA concentration for complete photothermal healing in vitro and vivo. This proof-of-principle demonstration highlights synthetically tailoring of the light harvesting over NIR-II biowindow for a given host material by anionic regulation and further optimizes tumor photothermal therapy at low dose.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF SOLID STATE ELECTROCHEMISTRY
·
2023
·Vol. 27
·期 10
·2593-2606
·
IF 2.5
Li Er-Mei,Zhu Li,Li Chao-Xiong,Shi Ling-Jun,Li Bing,Li Fang,Deng Ning,He Jian-Bo
Stannous sulfate is commonly used as an additive in the positive lead pastes of lead-acid batteries, but its real function and mechanism are still vague and need further study. The present work investigates the intrinsic effects of tin additives on the positive electrode performance under well-controlled experimental conditions. The tin additives are added in three ways: the SnSO 4 dissolved in 4.5 M H 2 SO 4 electrolyte, the metal Sn melted in metal Pb substrate, and the SnSO 4 mixed in homemade industrial lead pastes. A series of evolutions are clearly revealed in structure, composition, and redox activity of the positive active materials with the content of Sn. Both the SnSO 4 in the electrolyte and in the positive lead pastes have a significant inhibiting effect on the transformation between PbSO 4 and PbO 2 , leading to a decrease in the charge/discharge capacities with increasing content of SnSO 4 . A similar but weaker inhibiting effect was also found for the Sn melted in the Pb-Sn alloys. The SnSO 4 has a significant enhancement effect on the grain size of PbSO 4 /PbO 2 , which increases the resistance of the solid-phase transformation deep inside the grains during the charge/discharge. All these results do not support the use of SnSO 4 in the positive pastes of lead-acid batteries. Graphical abstract
✓ 已验证
产品关联
DOI
高影响因子
ACS Sustainable Chemistry & Engineering
·
2023
·
IF 8.4
Kang Lei,Haiming Huang,Xu Jia Liu,Weiliang Wang,Kai Guo,Ren Kui Zheng,Han Li
The eco-friendly thermoelectric material SnTe has recently gained immense attention due to its excellent thermoelectric properties and potential. However, its thermoelectric properties are limited by the inherent high carrier concentration (low Seebeck coefficient) and high thermal conductivity. Herein, we further introduce rare-earth element Y on top of the conventional Cu alloying to more effectively modulate its microstructure and thermal transport properties. The experimental results reveal that Y doping gives rise to band convergence, endowing Sn1–xYxTe-5%Cu2Te with an increased power factor of ∼22.14 μW cm–1 K–2. Meanwhile, the introduced abundant Y/Y2Te3 multiscale composite nanostructures in the matrix greatly enhance phonon scattering, resulting in an ultra-low lattice thermal conductivity of ∼0.43 W m–1 K–1. Consequently, these combined effects resulted in a peak ZT value of 1.27 at 823 K in Sn0.97Y0.03Te-5%Cu2Te. An enhancement of nearly 217% is achieved compared to pristine SnTe, which greatly improves the thermoelectric properties of SnTe-based materials.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
·
2021
·Vol. 168
·期 11
·110537
·
IF 4.316
Fei Chen,Leana Ziwen Rannalter,Xing Xiang,Yanhua Zhang,Shangbin Song,Shiyu Cao,Qiang Shen
The development of solid electrolytes is a key step to break through the technical bottleneck of lithium batteries and obtain lithium batteries with high safety and high energy density. Combining the advantages of both inorganic and organic solid electrolytes, the form of inorganic fillers for composite solid electrolytes is extended from nanoparticles, nanofibers to a 3D matrix. In this study, a porous Li6.4La3Zr1.4Ta0.6O12 (LLZTO) ceramic framework was fabricated by adding a pore-forming agent, which was then infiltrated by succinonitrile (SN)-LiTFSI to take full advantage of the inorganic and organic parts of the composite electrolyte. The interconnected porous structure allows continuous ion transport pathways in both parts. The effect of the porosity, namely the amount proportion of inorganic and organic materials, on the electrochemical performance of composite electrolytes was investigated by regulating the amount of pore-forming agent. The presented composite solid electrolyte achieves a very high ionic conductivity of 1.08 × 10−3 S cm−1 at 30 °C, while it is stable up to 5.1 V at room temperature. The repeated lithium stripping/plating is stable over 250 h without short circuit.
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）