CHEMICAL ENGINEERING JOURNAL
·
2024
·
IF 13.3
Lin Jin,Lin Zhang,Hao Liang,Yuhui Ao,Song Wang,De Sun
Solar-driven interfacial water evaporation is often regarded as a promising method for producing fresh water from seawater. However, developing an evaporator with an ideal evaporation rate and efficient seawater desalination capabilities remains a significant challenge, especially when considering the mechanical performance requirements in large-scale practical use. Based on this, this work proposed a Janus-structured 3D carbon fiber (CF)-reinforced solar-driven evaporator fabricated through a vacuum-assisted infusion process (VAIP). A heterogeneous structure of 1 T MoS 2 -MXene, formed through ion embedding, was adorned on the surface to serve as an efficient photothermal conversion material. Due to the synergistic advantages, the Janus 1 T MoS 2 -MXene/ CSA/CF (JMMC) evaporator achieved excellent solar absorption efficiency of 94 % in the range of 200–2500 nm. The evaporator exhibited an evaporation enthalpy as low as 1556.4 kJ·kg −1 , which facilitated the escape of water molecules at the interface. The JMMC evaporator delivered a high evaporation rate of 2.29 kg m -2 h −1 and an efficiency of 93.8 % under the irradiation of 1 sun (1.0 kW/m −2 (−|-)). The influence of the heterogeneous structure of 1 T MoS₂-MXene on the water evaporation rate was thoroughly assessed through molecular dynamics simulations. Besides, the mechanical performance of this evaporator was highly satisfactory, rendering it suitable for application in demanding and complex usage environments. Furthermore, its remarkable conductivity facilitated an excellent Joule heating effect even at low voltages, enabling water evaporation under challenging circumstances such as overcast skies or indoor settings. The versatility of this scalable evaporator holds great promise for addressing the issue of freshwater scarcity.
研究领域:
材料科学
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环境工程
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能源科学
✓ 已验证
产品关联
DOI
高影响因子
CHEMISTRY-A EUROPEAN JOURNAL
·
2019
·Vol. 25
·期 70
·16054-16062
·
IF 5.16
Raheela Naz,Qinglei Liu,Waseem Abbas,Muhammad Imtiaz,Imran Zada,Javed Ahmad,Tengfei Li,Jiajun Gu
A new ternary composite of 1T-molybdenum disulfide, hexagonal tungsten trioxide, and reduced graphene oxide (M-W-rGO) is synthesized by using a one-pot hydrothermal process. The synergetic effect of 1T-MoS 2 and hexa-WO 3 nanoflowers improves the electrochemical performance for supercapacitors by inducing additional active sites and hexagonal tunnels, respectively, which lead to high storage capacity and easy transfer of electrolyte ions. The ternary M-W-rGO composite has a high specific capacitance of 836 F g −1 at 1 A g −1 , which is nearly twice that of binary composites of M-rGO and W-rGO with high capacitance retention of 86.35 % after 3000 cycles at a high current density of 5 A g −1 . This study provides a new ternary composite that can be used as an electrode material for high-performance supercapacitors. Graphical The flower of supercapacitors : 1T-MoS 2 and hexa-WO 3 nanoflowers are grown on a 3D network of reduced graphene oxide by using a one-pot hydrothermal process. The hexagonal tunnel structure of WO 3 and 1T conducting phase of MoS 2 provide additional active sites, high storage capacity, and easy electronic transportation for high-performance supercapacitor applications.
研究领域:
材料科学
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电化学
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纳米科技
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能源存储
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功能材料
✓ 已验证
DOI
高影响因子
ELECTROCHIMICA ACTA
·
2020
·
IF 6.215
Jiayong Dai,Le Yao,Xingsu Gao,Shumeng Bai,Xian Chen,Lei Li,Jibin Song,Huanghao Yang
The establishment of analytical methods with superior sensitivity, selectivity, accuracy, and stability, as well as ultralow detection limits inspired a broad range of research enthusiasm. In this work, we developed an electrochemical method for detecting mercury ions using metallic 1T-MoS 2 nanosheets, which was firstly fabricated using phase engineering strategy and then exfoliated. Remarkably promoted sensitivity and significantly lowered limits of detection (LODs) were achieved due to the dramatically reduced charge transfer resistance of 1T-MoS 2 nanosheets compared with that of the semiconducting 2H-MoS 2 nanoflakes. After electrode modification and optimization, working curves for both two materials were obtained. Astonishingly, the LODs of 1T-MoS 2 modified glassy carbon electrodes (GCEs) was calculated to be 1.54 × 10 −19 M (D L = 3σ/k), which was six orders of magnitude lower than that of 2H-MoS 2 (1.46 × 10 −13 M). And 1T-MoS 2 -based electrochemical detection method also exhibited superior selectivity towards other ten ions selected because of the high affinity between Hg and S. The stability and reproducibility of the new method was impressive as well, and the recovery rates using spiked real water samples were all in the range of 99.8–101.2% due to the superb sensitivity. All results proved that the metallic 1T-MoS 2 nanosheets a promising material for electrochemical detection of mercury ions.
研究领域:
分析化学
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环境科学
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纳米技术
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材料科学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2020
·
IF 7.489
Haixin Zhao,Shu Cui,Guodong Li,Nan Li,Xiaotian Li
Recently, photocatalysts with a hollow mesoporous structure have drawn increasing interest owing to their extensive application in environmental protection. Herein, we prepared hollow mesoporous TiO 2 nanospheres decorated with few layer 1T- and 2H- mixed phase MoS 2 nanosheets via a template-based method and a hydrothermal reaction. The as-synthesized samples are of hollow mesoporous structure and high specific surface area, providing abundant mass transport and active sites for photocatalytic reaction. 1T-MoS 2 in the mixed phase MoS 2 mainly play the role as a bridge that transfers photoexcited electrons. Besides, the heterojunction between MoS 2 and TiO 2 can also efficiently restrain the recombination of photogenerated charge carriers in photocatalysts. As a consequence, under UV–vis light irradiation, the hollow porous TiO 2 /MoS 2 presents a remarkable photocatalytic activity in rhodaming B degradation. Scavenger studies demonstrate that the primary active species in photocatalytic process are hydroxyl radicals. Moreover, a possible photocatalytic reaction mechanism has also been put forward.
研究领域:
材料科学
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环境科学
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纳米技术
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光催化
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ACS Applied Materials & Interfaces
·
2025
·
IF 8.2
Qing Zeng,Mengxi Han,Yifan Zhu,Qingyu Wu,Jianlin Zhou,Xinhua Hu,Bo You
Solar-control window film is an effective solution for reducing indoor cooling energy consumption. In this study, a modified 1T-phase molybdenum disulfide (M1T-MoS2)/phenolic resin composite film with low reflectivity, high imaging clarity and broadband optical blocking performance was developed. To enhance the dispersion of 1T-phase MoS2 nanosheets within the resin matrix, surface functionalization was achieved using trimethoxysilylpropanethiol (TOPE), exploiting the strong chemical affinity between thiol groups and sulfur vacancies. Furthermore, in situ curing of the phenolic resin facilitated dehydration condensation between silanol groups on the modified nanosheets and hydroxymethyl groups of the resin, resulting in the nanosheets being firmly anchored within the polymer network. The improved dispersion of the metallic-like M1T-MoS2 nanosheets allows the M1T-MoS2/phenolic resin film, with a thickness of only 40 μm and a filler content of 1.75 wt %, to achieve a light shading efficiency exceeding 85% for visible and near-infrared light below 1500 nm. Additionally, the film demonstrates high imaging clarity and a low visible-light reflectance of approximately 7%, contributing to the reduction of glare and light pollution caused by excessive reflection from window films. Experimental photothermal efficiency tests and finite element analysis demonstrated that the film’s high light-shading performance was primarily due to its strong optical absorption rather than reflection. This study presents an effective approach for fabricating broadband solar control window films and provides a strategy to enhance the stability of 1T-phase MoS2 in practical applications. These findings contribute to expanding the applications of 1T-MoS2 in composite materials and energy-related fields.
研究领域:
材料科学
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纳米技术
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光学
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能源效率
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聚合物复合材料
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ACS Applied Materials & Interfaces
·
2024
·
IF 8.3
Xin-ya Bu,Yan-li Zhu,Cong-jie Wang,Wei Li,Yu Xia,Yong Zhao
Thermal batteries are solid-state, thermally activated batteries with long storage times and high reliability. FeS2 is used as a cathode material commonly, but the high internal resistance and low voltage platform limit the improvement of battery performance. Herein, the 1T-phase vanadium disulfide (VS2) is prepared via the scalable hydrothermal method and applied to thermal battery cathode materials for the first time. 1T-VS2 lamellar flower clusters have high electronic conductivity (1.583 S cm–1) at room temperature, which is 75 times higher than FeS2 (0.021 S cm–1). Mechanism analysis shows that 1T-VS2@V2O3 can be formed based on the part of 1T-VS2 being oxidized to V2O3 at the discharge temperature. Benefiting from the synergistic effect of vanadium sulfide and vanadium oxide as a cathode for thermal batteries enhanced specific capacity (292.4 mA h g–1) and mass energy density (572.5 W h kg–1) when cutoff voltage is 1 V. Additionally, the discharge results indicate that the cells utilizing 1T-VS2 cathodes provided a higher voltage platform of 2.11 V than 1.84 V for FeS2. This impressive work can offer a good strategy for boosting cathode materials for a high-performance thermal battery.
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
PubMed
高影响因子
APPLIED SURFACE SCIENCE
·
2019
·
IF 5.155
Ruijing Wang,Qiang Shao,Qin Yuan,Peng Sun,Rongrong Nie,Xuefeng Wang
The modified MoS 2 -based material, with a higher conductivity and rich active sites, is promising one of a variety of nonprecious-metal electrocatalysts for hydrogen evolution reaction (HER). Here, the bulk MoS 2 is exfoliated to form small-size MoS 2 clusters by pulse laser, which are diluted in solid sulfur and further to form porous film. The 1T phase MoS 2 ratio in the prepared film was modulated by adding the different content of sulfur into MoS 2 target. Besides, this addition also has an effect on the pore structure of films. Finally, the obtained high-content 1T phase MoS 2 film provides the highly metallic conductivity and more active sites, which results in the more enhanced HER catalytic activity with a lower Tafel slope of 38 mV dec −1 , a smaller overpotential of 151 mV at 10 mA cm −2 , compared with the pure MoS 2 film.
研究领域:
材料科学
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电化学
·
纳米技术
✓ 已验证
产品关联
DOI
高影响因子
Analytical Methods
·
2022
·Vol. 14
·期 5
·549-559
·
IF 3.532
Qiaoling Wu,Chun Ji,Lingli Zhang,Qili Shi,Yuangen Wu,Han Tao
The work presented here describes a highly sensitive and simple electrochemical sensor for the detection of Sudan I dye based on a nanocomposite made of MoS2 heterogeneous nanosheets (1T@2H-MoS2) and carboxylated carbon nanotubes (cMWCNTs) (1T@2H-MoS2/cMWCNTs). XPS results indicate that the content of 1T phase MoS2 was estimated to be 72% in 1T@2H-MoS2. Electron microscopy results show that the tubular cMWCNTs are uniformly interwoven in MoS2 nanosheets to form a three-dimensional network structure. Due to the synergistic electrocatalytic ability and high electroactive surface area, the 1T@2H-MoS2/cMWCNTs modified electrode demonstrated excellent analytical performance for Sudan I, including simple operation, good stability and a wide linear range from 5.00 × 10−9 to 2.00 × 10−6 mol L−1 and 2.00 × 10−6 to 1.00 × 10−4 mol L−1 with an ultra-low detection limit of 1.56 × 10−9 mol L−1. The recoveries of Sudan I from spiked real samples (chilli powder and ketchup) were in the range of 95.60% to 106.10% with low RSD (<5%), indicating that the 1T@2H-MoS2/cMWCNTs modified electrode is a promising tool for the analysis of illegal Sudan I in food samples.
研究领域:
分析化学
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食品安全
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纳米材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2021
·
IF 13.273
Wenda Zhou,Zhenzhen Jiang,Mingyue Chen,Zhaohui Li,Xingfang Luo,Manman Guo,Yong Yang,Ting Yu,Cailei Yuan,Shouguo Wang
Owing to tip effect can introduce localized enhanced electric field and reduce interfacial energy barrier, design of atomic tip structure in single-atom catalysts (SACs) may be a fascinating strategy to further improve its electrocatalytic activity. However, conventional synthesis methods, such as defect-trapping or substitution, only lead to the formation of planar geometry of SACs without tip atoms. Good conductive 1T-TMDs with electrocatalytically active basal plane can provide platform to directly stabilize single atoms (SAs) on the top sites of its surface to form atomic tip structure. Herein, a universal Laser-molecular beam epitaxy (L-MBE) method for precisely controlling non-noble metal SAs directly immobilizing on the Cr top site of 1T-CrS 2 metallic basal plane is developed. In case of Mo, the Mo SAs@1T-CrS 2 with single-atom tip structure can exhibit enhanced electric field surrounding Mo atoms and an almost zero hydrogen adsorption free energy, resulting in superior HER performance together with high stability. This work provides a general way to design varieties of SACs in widely catalytic application.
研究领域:
材料科学
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电化学
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纳米催化
·
能源材料
·
表面科学
✓ 已验证
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2025
·
IF 6.3
Keru Song,Anze Shui,Mingyuan Hu,Hulei Yu
Transition metal dichalcogenides (TMDs) with regulated band structures and multilayered structures have attracted considerable interest in microwave absorption materials. However, the rational design of the hierarchical structure with phase and defect from a microscopic perspective remains challenging. Here, the O-doped 1 T/2H MoS 2 heterojunction is successfully fabricated with a hierarchical morphologically controllable 3D flowerlike structure using the cetyltrimethylammonium bromide template method. It is found that the heterogeneous interface between 1 T and 2 H MoS 2 phases can increase interfacial polarization, and the defects with O dopants and vacancies are beneficial to improve dipole polarization and conductive loss. Such a synergism results in a significantly enhanced electromagnetic wave absorption (EMWA) in these O-doped 1 T/2H MoS 2 samples, achieving the minimum reflection loss (RL min ) of −55.28 dB at a matching thickness of 2.53 mm and an effective absorption bandwidth of 5.05 GHz at 1.88 mm in the as-fabricated MS0.3C-40 samples. Meanwhile, the RL min of the as-fabricated MS0.3C-50 samples reaches −55.24 dB at a matching thickness of 2.29 mm with a maximum radar cross-section of 38.72 dB∙m 2 . These findings pave the way for optimizing the EMWA performance of TMDs with the synergism of phase engineering and defect engineering.
研究领域:
材料科学
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纳米技术
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电磁学
·
固体物理
✓ 已验证
产品关联
DOI
高影响因子
Journal of Materials Chemistry B
·
2021
·Vol. 9
·期 38
·8109-8120
·
IF 6.331
Hao Liu,Haolin Chen,Xiaoying Liu,Luoqi Mo,Chao Chen,Zhouyi Guo,Zhiming Liu
1T-phase niobium telluride (NbTe2) nanosheets are becoming increasingly important in emerging fields, such as spintronics, sensors and magneto-optoelectronics, due to their excellent physical and chemical properties. However, exploration on their biomedical applications are limited. Herein, ultrathin 1T-phase NbTe2 single-crystalline nanosheets with excellent photothermal performance, high drug-loading rate, near-infrared (NIR) light/acidic pH-triggered drug release, and low toxicity were developed for potentiated photothermal therapy. Importantly, they showed excellent biocompatibility in vivo and in vitro. NbTe2 nanosheets loaded with integrated stress response inhibitors (ISRIB) could achieve chemo-photothermal therapy of tumors through the ATF4–ASNS signaling axis. Ultrathin 1T-phase NbTe2 single-crystalline nanosheets with unique photothermal properties, drug loading rate and safety provide dramatic possibilities in biomedical applications, such as tissue imaging, photothermal therapeutics and pharmaceutics.
研究领域:
生物医学工程
·
纳米技术
·
癌症治疗
·
材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Nanoscale
·
2023
·Vol. 15
·期 39
·16131-16143
·
IF 6.7
Jingzhi Wang,Mei Li,Zhiliang Jin
Dynamics and morphology play a crucial role in the field of photocatalytic hydrogen production. Regulating the transfer of photogenerated charges is an effective way to improve the catalytic activity. In this paper, 1T-WS2 is introduced into a p–n heterostructure, ZnCdS/NiV-LDH, as a metalloid electron pump to transfer photogenerated electrons from semiconductors with larger work functions to metalloid materials with smaller work functions, effectively to attract photogenerated electrons, and promote charge rearrangement at the p–n heterostructure interface, so as to achieve the best utilization efficiency of photogenerated charges. Second, adjusting the morphology to increase the light absorption area of the catalyst is also a way to improve the photocatalytic activity. Two different nanosheet structures dispersed heavily stacked ZnCdS, increasing the light absorption area of the system. The optimal catalyst ratio achieves a hydrogen evolution rate of 22.37 mmol g−1 h−1, achieving 7.98% AQE and 2.12% STH conversion efficiency at 450 nm. The potential mechanism was demonstrated through in situ XPS. This study provides new insights into adding “electron pumps” to heterostructures to enhance photocatalytic activity.
研究领域:
材料科学
·
催化
·
纳米技术
·
光化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）