CHEMICAL ENGINEERING JOURNAL
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2022
·
IF 16.744
Xuejing Wang,Lun Wang,Shenghua Ma,Shanshan Tong
Recycling precious metals from electronic wastes, minerals, waste catalysts, industrial wastewater and other wastes are of great significance to the construction of a sustainable industry framework, but it is still challenging. Herein, we for the first time proposed the design and preparation of two three-dimensional (3D) WS 2 nanobowls hybrid aerogels (GA@WS 2 Nbs and WS 2 Nbs/GA) for the recovery of precious metal ions and highly efficient removal of organic dyes. The construction of tungsten disulfide nanobowls (WS 2 Nbs) was optimized in morphology in consideration of the precursor concentration and reaction time. The prepared WS 2 Nbs/GA was shown to rapidly capture Au (III) from printed wiring board (PWB) containing various interferents. The calculated capture capability of 1265.8 mg g −1 for Au (III) was obtained. It surprisingly involved that the deposition of nano gold (Au 0 ) on the WS 2 Nbs/GA was due to not only the selective chemistry of WS 2 Nbs/GA but also its reduction interaction. Furthermore, the WS 2 Nbs/GA exhibited remarkable efficiencies (99 %) in the removal of methylene blue. The unique properties gave the hybrid aerogels gifted ability in capturing Au (III) from electronic wastes and minerals. It provided a blueprint for the next generation green platform for precious metals and water treatment.
研究领域:
材料科学
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环境科学
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化学工程
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DOI
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2022
·
IF 5.518
Hao Huang,Yonglin Lei,Ling Bai,Yao Liang,Han Yang
The morphology of CdS affects its photocatalytic properties and assembly efficiency of CdS-based heterojunction . In this study, various morphologies of CdS, including sloping plate, spherical, flower, lamellar and leaf were synthesized by adjusting different solvents and crystal control agents in solvothermal process. By comparison of geometric matching and photocatalytic activity of the multi-shaped CdS assembling with MoS 2 , the concept of point-flat-plate microstructure assembly was firstly introduced into construction of ternary quasi 2D/2D CdS/MoS 2 /WS 2 heterojunction. Owing to better geometric configuration, quasi 2D/2D CdS/MoS 2 /WS 2 heterojunction exhibited excellent characteristics of photocatalytic degradation of tetracycline . In this work, 97.2% of tetracycline (20 mg/L, 0.1 g/L dosage) was degraded within 60 min under the irradiation of 150 W Xenon light power, which was superior to other previously reported CdS heterojunctions.The enhancement of photocatalytic performance was due to the faster separation of photogenerated electrons and the lower recombination of electron-hole pairs in point-flat-plate CdS/MoS 2 /WS 2 heterojunction. This study provides a promising way to construct highly efficient photocatalyst and other micro-nano structures for different applications.
研究领域:
材料科学
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环境科学
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DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2022
·
IF 7.392
Jing Xu,Zhong Dong,Yujin Li,Ke-Jing Huang,Kening Liu,Chengyuan Cao
Water system zinc ion batteries (ZIBs) displays the attractive advantages and it has been considered as the main energy storage device to replace lithium ion batteries (LIBs). Unfortunately, the existing cathode materials are far from achieving the excellent performance required by increasing energy consumption. In recent years, the popular MoS 2 materials still suffer from the inherent defects of poor electrical conductivity, unstable structure, and large volume expansion and lamellar stacking during charging and discharging, resulting in weak periodic stability and severely hindering its commercial applications. In view of the special requirements of cathode materials for ZIBs, this work innovatively proposes the construction of new-type ternary composite nanomaterials, comprehensively improve the practicability of MoS 2 materials. The experimental results confirm that the prepared MoS 2 @WS 2 @CC composite material has high specific capacity and excellent rate performance, due to the synergistic effect of conductive carbon fiber substrate and large layer spacing WS 2 which can improve the volume expansion and diffusion rate fundamentally. Therefore, we can predict that the MoS 2 @WS 2 @CC composite is expected to accelerate the commercial application of ZIBs, and provide ideas for the design of other energy storage materials.
研究领域:
材料科学
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能源存储
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DOI
高影响因子
ELECTROCHIMICA ACTA
·
2024
·
IF 5.5
Boxin Fan,Anmin Lei,Yueping Zou,Miaomiao Liu,Lianhua Zhao,Biyao Jin
The charging and discharging processes of rechargeable Zn-air batteries (ZABs) require the use of precious metal catalysts (Pt and RuO 2 ) that are expensive. Therefore, preparing efficient, stable, and affordable metal bifunctional oxygen electrocatalysts compatible with both the oxygen reduction reaction (ORR) and oxygen evolution reaction (OER) is crucial. Herein, a nanoflower-like Co 9 S 8 /Co 1-x S/WS 2 bifunctional oxygen electrocatalyst with a layered structure has been prepared. The cobalt sulfide serves as the main active site and the synergistic interaction between the multi-components modulates the electronic structure of the active site and generates abundant S vacancies, thereby effectively improving the bifunctional oxygen electrocatalytic performance. The electrocatalytic activity of the prepared catalyst for ORR/OER is close to that of commercial noble metal catalysts. When Co 9 S 8 /Co 1-x S/WS 2 is used as the cathode material in Zn-air batteries, the batteries exhibit high specific capacity (822.6 mAh g Zn −1 ), excellent energy density (958.9 Wh kg Zn −1 ), as well as a battery charge/discharge cycling time that was twice that of the commercial catalyst PtC+RuO 2 .
研究领域:
材料科学
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电化学
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能源存储与转换
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DOI
高影响因子
NANO LETTERS
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2026
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IF 9.1
Yang Chen,Mouyuan Liu,Song Luo,Peng Wan,Dongyan Liu,Dingyi Shen,Jia Li,Bo Li,Hong Wu,Ruixia Wu,Xidong Duan
Two-dimensional materials hold great promise for postsilicon electronics, but their conventional high-temperature synthesis hinders integration with back-end-of-line processes. Here, we present an enclosed chemical vapor transport (ECVT) process for growing centimeter-scale uniform and continuous monolayer MoS2 and WS2 films at temperatures as low as 280 and 350 °C, respectively. The confined geometry of the ECVT system enhances the partial pressure of active molecular species, thereby reducing the energy barriers for both atomic nucleation and lateral migration of 2D materials on the substrate. The ECVT-synthesized MoS2 nanoflakes at 350 °C exhibit a single-domain size of ∼7 μm, an ultralow defect density of 1.14 × 1013 cm–2, a room-temperature mobility of ∼20 cm2 V–1 s–1, and an on/off ratio of ∼107 of the related transistors. This work may provide a viable pathway for BEOL-compatible 2D material integration.
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PubMed
高影响因子
Micro & Nano Letters
·
2022
·Vol. 17
·期 6
·125-133
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IF 0.98
Jian-Jun Shi,Zhe Wang,Yan Wang,Rui-Wen Shu,Ping Yang
A photoelectrochemical sensor has been developed for the detection of the polycyclic aromatic hydrocarbon pollutant benzo [a]pyrene (BaP). An n -butyl lithium intercalation stripping method is applied to prepare tungsten disulphide nanosheets (WS 2 NSs). WS 2 NSs and β-cyclodextrin (β-CD)-modified MoS 2 quantum dots (QDs) are then compounded by hydrogen bonding between the amino and hydroxyl groups. After assembly on an indium tin oxide electrode, the energy level matching and synergistic photoelectric effect between β-CD-MoS 2 QDs and WS 2 NSs reduced the combination of photogenerated electrons and holes and an enhanced photocurrent signal is observed. As a result of the host–guest interaction between β-CD and BaP, BaP could bind to the β-CD-MoS 2 QDs in the nanocomposites, which hinders the electron migration to the electrode and weakened the photocurrent signal. Thus, the trace detection of BaP is realized. The rate of photocurrent change is also related to the BaP concentration from 1 to 20 nmol/L with a detection limit of 0.33 nmol/L. In summary, a highly sensitive and selective photoelectrochemical sensor for the detection of BaP is successfully constructed.
研究领域:
环境科学
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材料科学
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分析化学
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高影响因子
SENSORS AND ACTUATORS B-CHEMICAL
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2025
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IF 7.7
Xu He,Xiaobo Zhang,Qiuyue Zheng,Jingli Yuan,Jijuan Cao
Staphylococcus aureus ( S. aureus ), a prevalent foodborne pathogen, poses a significant threat to public health. Rapid, specific, and sensitive on-site pathogen detection methods are crucial for food safety. In this study, a ternary MXene/WS 2 /Au NPs composite was synthesized via a solvothermal and in situ growth method. This composite serves dual purposes as a photoactive material for photoelectrochemical (PEC) aptasensing and as an effective antibacterial catalyst. A PEC aptasensor was developed using MXene/WS 2 /Au NPs as the substrate and a ferrocene-modified aptamer as the recognition probe, enabling quantitative detection of S. aureus . The sensor exhibits a wide linear range (1.0 × 10–1.0 × 10 7 CFU/mL) and an ultra-low detection limit (3.0 CFU/mL). Additionally, the nanocomposite demonstrates strong peroxidase-like activity, efficiently catalyzing H 2 O 2 to generate ·OH, offering broad-spectrum antibacterial properties for pathogen control in food safety monitoring.
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高影响因子
Discover Nano
·
2023
·Vol. 18
·期 1
·1-13
·
IF 0
Yang Weihuang,Mu Yuanbin,Chen Xiangshuo,Jin Ningjing,Song Jiahao,Chen Jiajun,Dong Linxi,Liu Chaoran,Xuan Weipeng,Zhou Changjie,Cong Chunxiao,Shang Jingzhi,He Silin,Wang Gaofeng,Li Jing
Large-area, continuous monolayer WS 2 exhibits great potential for future micro-nanodevice applications due to its special electrical properties and mechanical flexibility. In this work, the front opening quartz boat is used to increase the amount of sulfur (S) vapor under the sapphire substrate, which is critical for achieving large-area films during the chemical vapor deposition processes. COMSOL simulations reveal that the front opening quartz boat will significantly introduce gas distribute under the sapphire substrate. Moreover, the gas velocity and height of substrate away from the tube bottom will also affect the substrate temperature. By carefully optimizing the gas velocity, temperature, and height of substrate away from the tube bottom, a large-scale continues monolayered WS 2 film was achieved. Field-effect transistor based on the as-grown monolayer WS 2 showed a mobility of 3.76 cm 2 V −1 s −1 and ON/OFF ratio of 10 6 . In addition, a flexible WS 2 /PEN strain sensor with a gauge factor of 306 was fabricated, showing great potential for applications in wearable biosensors, health monitoring, and human–computer interaction.
研究领域:
材料科学
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纳米技术
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电子学
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传感器
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DOI
Small
·
2026
·
IF 11.8
Ning Li,Jinyu Zhang,Jiafeng Ma,Chaorui Xue,Qing Chang,Lei Liu,Xiangqian Fan,Caihong Hao,Shaobin Wang,Shengliang Hu,Wenjie Tian
Efficient photocatalysis requires coordinated regulation of charge transport across both bulk and interfacial regions. Here, we introduce an in situ hydrothermal-solvothermal method that simultaneously creates a defect-induced p-n homojunction in ZnIn 2 S 4 (ZIS) and a type-II heterojunction with hybrid 1T-2H WS 2 , forming antiparallel internal-interfacial built-in electric fields (BIEF) that are confirmed by spectroscopic, electronic, optical, and theoretical analyses. Under the guidance of this dual-field coupling effect, photoexcited carriers undergo more efficient separation, enabling the effective modulation of bulk carrier migration and directing electrons toward sulfur-vacancy (S v ) sites in ZIS for efficient hydrogen evolution. The hybrid 1T-2H phases of WS 2 further enhance light absorption and facilitate rapid charge generation and transfer, reinforcing the dual-BIEF-driven transport pathway. The optimized ZIS/WS 2 photocatalyst achieves a hydrogen evolution rate of 44.97 mmol g −1 h −1 and an apparent quantum efficiency of 24.54% at 400 nm. This work establishes antiparallel dual-BIEF engineering combined with 1T-2H hybrid-phase modulation as a platform for directional charge-dynamic control, offering a pathway toward efficient solar-to-hydrogen conversion.
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PubMed
高影响因子
APPLIED CATALYSIS B-ENVIRONMENTAL
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2025
·
IF 21.1
Kaiyang Shi,Changlin Yu,Jie Yuan,Weiya Huang,Kangqiang Lu,Zechao Zhuang,Jinrong Huo,Yu Xie,Erhuan Zhang,Dingsheng Wang,Kai Yang
Photocatalytic nitrogen fixation (PNF) under mild conditions is a promising approach to sustainable ammonia (NH 3 ) synthesis. However, PNF normally encounters many challenges, such as inefficient charge separation, poorly exposed active sites, and sluggish multi-electron/proton-involved steps. Here, we design a step (S)-scheme WS 2-x /La 1 -WO 2.9 heterojunction through integrating rich oxygen/sulfur dual-vacancies and loading rare-earth La single atoms. The as-prepared photocatalyst achieves a high NH 3 generation rate of 124.9 μmol∙g −1 ∙h −1 , which is 4.4, 1.7 and 1.2-fold those of pristine WO 3-x , WS 2-x and WS 2-x /WO 2.9 , respectively. Further in-depth characterizations and theoretical calculations reveal a synergistic photocatalytic effect in WS 2-x /La 1 -WO 2.9 , mainly due to the regulated collaborative dual defects and a lower energy d −π* occupation orbital from the modulation of La-modified W site. This leads to significantly reducing the reaction barrier in the rate-limiting step and elucidating the key intermediate processes (-NH 2 , -NH 2 NH 2 ) of the nitrogen fixation reaction. Our study creates a comprehensive strategy, analogous to the “three birds with one stone” method, offering new insights into advancing PNF.
研究领域:
材料科学
·
催化化学
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产品关联
DOI
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2026
·
IF 5.4
Quangang Chen,Shijun Xu,Kaijun Wei,Xianmin Gong,Xingtao Cheng,Yi He,Haitao Liu,Xiangshan Hou,Yi Sun,Han Liu,Qing Yuan
In this work, modified Cr 3 C 2 and two-dimensional layered WS 2 were deposited within a Ni-P plating layer via pulse electrodeposition, synthesizing a novel Ni-P-Cr 3 C 2 /PANI@WS₂ plating on N80 carbon steel. The synergistic effects of Cr 3 C 2 /PANI (polyaniline-coated Cr 3 C 2 ) and WS 2 on the coating were investigated. The results indicate that adding the aforementioned components considerably enhances the surface morphology, mechanical characteristics, and corrosion resistance of the composite coating, as shown below: The Ni-P-Cr 3 C 2 /PANI@WS 2 plating exhibited outstanding mechanical properties, with a microhardness of 800.16 HV, an average coefficient of friction of 0.143, a wear scar area of 67.70 µm 2 and a wear depth of 0.97 µm. Nanoindentation testing further indicates this composite coating possesses the highest hardness and elastic modulus, reaching 785.02 HV and 154.67 MPa respectively. Immersion testing in a 3.5 % NaCl solution demonstrates that the incorporation of Cr 3 C 2 /PANI and WS 2 significantly enhances the long-term corrosion resistance of the Ni-P plating. Moreover, the composite plating maintains excellent corrosion resistance even under acidic conditions, demonstrating its potential for demanding applications in aggressive environments.
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高影响因子
MICROCHIMICA ACTA
·
2019
·Vol. 186
·期 8
·1-10
·
IF 5.479
Niazi Sobia,Khan Imran Mahmood,Yu Ye,Pasha Imran,Shoaib Muhammad,Mohsin Ali,Mushtaq Bilal Sajid,Akhtar Wasim,Wang Zhouping
A “turn on” time-resolved fluorometric aptasensor is described for the simultaneous detection of zearalenone (ZEN), trichothecenes A (T-2), and aflatoxin B 1 (AFB 1 ). Multicolor-emissive nanoparticles doped with lanthanide ions (Dy 3+ , Tb 3+ , Eu 3+ ) were functionalized with respective aptamers and applied as a bioprobe, and tungsten disulfide (WS 2 ) nanosheets are used as a quencher of time-resolved fluorescence. The assay exploits the quenching efficiency of WS 2 and the interactions between WS 2 and the respective DNA aptamers. The simultaneous recognition of the three mycotoxins can be performed in a single solution. In the absence of targets, WS 2 is easily adsorbed by the mixed bioprobes via van der Waals forces between nucleobases and the WS 2 basal plane. This brings the bioprobe and WS 2 into close proximity and results in quenched fluorescence. In the presence of targets, the fluorescence of the bioprobes is restored because the analytes react with DNA probe and modify their molecular conformation to weaken the interaction between the DNAs and WS 2 . Under the optimum conditions and at an excitation wavelength of 273 nm, the time-resolved fluorescence intensities (peaking at 488, 544 and 618 nm and corresponding to emissions of Dy 3+ , Tb 3+ and Eu 3+ ) were used to quantify ZEN, T-2 and AFB 1 , respectively, with detection limits of 0.51, 0.33 and 0.40 pg mL −1 and a linear range from 0.001 to 100 ng mL −1 . The three mycotoxins can be detected simultaneously without mutual interference. The assay was applied to the quantification of ZEN, T-2 and AFB 1 in (spiked) maize samples. This homogeneous aptamer based assay can be performed within 1 h. Conceivably, it can become an alternative to other heterogeneous methods such as the respective enzyme-linked immunosorbent assays.
Schematic presentation of an aptasensor for simultaneous detection of zearalenone, trichothecenes A and aflatoxin B 1 using aptamer modified time-resolved fluorescence nanoparticles as signalling probes and tungsten disulfide as the quencher. This assay shows lower detection limit and requires no washing steps.
研究领域:
分析化学
·
食品安全
·
生物技术
·
环境科学
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DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）