Materials Futures
·
2025
·Vol. 4
·期 2
·025302
·
IF 10.8
Yali Sun,Yun Li,Yang Zhou,Ting Cai,Yuxuan Chen,Chao Zou,Han Song,Shenghuang Lin,Shenghua Liu
Organic electrochemical transistors (OECTs) are regarded as a promising platform for chemical and biological sensing due to their biocompatibility, cost-effectiveness and flexibility. However, maintaining long-term stability of OECTs while achieving high sensitivity remains a challenge for their practical applications. One of the main reasons is the relatively low electronic and ionic conductivity of the channel material. Herein, we present a p-type OECT fabricated by incorporating metal–organic framework (MOF)-MoS2 hybrid nanosheets into the PEDOT:PSS channel via solution-based processes. The strategy significantly improves the sensitivity of OECT, with the transconductance of the device increasing by ∼threefold to 19.34 mS. The higher transconductance is attributed to the hybrid MOF-MoS2 dopant, which not only enhances the electronic conductivity, but also strengthens ion transport and capacitance of the PEDOT:PSS film due to the synergistic effects from high electron mobility of MoS2 and MOF porous structure with large surface area. The fabricated OECT demonstrates high selectivity and sensitivity as a glucose biosensor across a wide concentration range in saliva. Finally, we illustrate the merits of integration machine learning algorithms to construct predictive models using the extensive datasets produced by our sensors for both classification and quantification tasks. These findings highlight the great potential of OECTs incorporating MOF-MoS2 hybrid, as a promising candidate for ultra-sensitive biological detections, and broaden the applications of our OECT biosensors for non-invasive health monitoring and wearable electronics.
研究领域:
生物医学工程
·
材料科学
·
传感器技术
✓ 已验证
产品关联
DOI
高影响因子
RSC Advances
·
2020
·Vol. 10
·期 14
·8055-8065
·
IF 3.119
Wenpeng Han,Shanmin Wang,Xuekuan Li,Ben Ma,Mingxian Du,Ligong Zhou,Ying Yang,Ye Zhang,Hui Ge
The effect of Fe, Co and Ni promoters on supported MoS2 catalysts for hydrogenation of nitroarenes were systematically investigated via experiment, characterization and DFT calculation. It was found that the addition of promoters remarkably improved the reaction activity in a sequence of Ni > Co > Fe > Mo. Meanwhile Ni promoted catalyst with the best performance showed good recyclability and chemoselectivity for a wide substrate scope. The characterization results revealed that the addition of promoters decreased the interaction between Mo and support and facilitated the reductive sulfidation of Mo species to produce more coordinated unsaturated sites (CUS). DFT calculations showed that the addition of promoters increased the formation of CUS, and enhanced the adsorption of hydrogen. The influence degree of promoters followed the sequence Ni > Co > Fe > Mo, which was consistent with those of the activities. Nitrobenzene hydrogenation and hydrogen activation occurred at the S and Mo edge, respectively. The adsorbed hydrogen diffused from the Mo edge to the S edge to participate in the hydrogenation reaction. Mechanism investigation showed that the main reason for increased activity by the addition of promoters was the increase of amounts of CUS and the secondary reason was the augmentation of intrinsic activity of CUS. The present studies give a new understanding for promoter modified MoS2 catalysts applied for hydrogenation of nitroarenes.
研究领域:
催化化学
·
材料科学
·
理论化学
✓ 已验证
DOI
高影响因子
ChemElectroChem
·
2018
·Vol. 6
·期 3
·748-756
·
IF 4.446
Yuan-Sheng Cheng,Min Ling,Bin-Bin Jiang,Fang-Hui Wu,Zi-Hao Zhao,Xiao-Ning Li,Peng-Fei He,Xian-Wen Wei
Graphical A three-dimensional composite is synthesized by a simple two-step method and applied as a highly active pH-universal electrocatalyst for the hydrogen evolution reaction. The material is stable in acid, neutral, and alkaline media. Developing high-performance non-noble-metal electrocatalysts for the hydrogen evolution reaction (HER), which can be stably operated under various conditions is highly required in realistic production. In this work, a hierarchical architecture consisting of MoS 2 and Co 9 S 8 anchored on a reduced graphene oxide (rGO) substrate was first synthesized, then by introducing blank graphene oxide (GO) and multi-walled carbon nanotubes (CNTs), interconnected three-dimensional (3D) composite aerogels with high conductivity were obtained, showing a high activity for the HER, with low overpotentials (η 10 ) at about 90 mV (0.5 M H 2 SO 4 ), 176 mV (1.0 M PBS), and 102 mV (1.0 M KOH). The high performance might be caused by special hierarchical 3D structures maximally exposing the active edges of both MoS 2 and Co 9 S 8 . Additionally, 3D MoS 2 /Co 9 S 8 /rGO-CNTs showed a superior stability and could work stably under different conditions for more than 20 h or 1000 cycles, which is attributed to the good crystallinity after annealing, the highly symmetrical structures between Co 9 S 8 and MoS 2 , and robust protection provided by the 3D carbon substrate. The results presented herein may provide an effective way to develop non-noble-metal electrocatalysts for different fields including the HER.
研究领域:
材料科学
·
电化学
✓ 已验证
DOI
高影响因子
Nanoscale
·
2017
·Vol. 9
·期 25
·8879-8888
·
IF 7.367
Xiu Liang,Yi-Shuo Wang,Ting-Ting You,Xiao-Juan Zhang,Nan Yang,Guang-Sheng Wang,Peng-Gang Yin
Interfacial self-assembly of ordered nanostructures at oil–water interfaces towards the fabrication of nanofilms has attracted the interest of plenty of scientists, since its discovery in 2004. Herein, further developments have been achieved, and we report a new strategy for the synthesis of a three-dimensional (3D) hierarchical nanostructure, through an interfacial synthesis driven microemulsion process. Thus, the synthesis route has been simplified, with the rigorous experimental conditions of traditional compositing technology. Combined with a two-step seed-mediated growth method for preparing uniform Ag-NPs, a plasmonic 3D MoS2-NS@Ag-NP nanostructure was successfully developed as a Surface-Enhanced Raman Scattering (SERS) active substrate, with plenty of surface hot spots, leading to an enhancement factor (EF) of 1.2 × 108 derived from both electromagnetic mechanism (EM) and chemical mechanism (CM) effects. The 3D MoS2-NS@Ag-NP nanostructure can be applied to detect trace thiram in apple juice and local lake water, with a detection limit as low as 10 ppb (42 nM), which is much lower than the maximal residue limit (MRL) of 7 ppm in fruit prescribed by the U.S. Environmental Protection Agency (EPA). Furthermore, quantitative analysis was achieved in the range of 10 ppb–1 ppm with good homogeneity and selectivity.
研究领域:
材料科学
·
分析化学
·
环境科学
✓ 已验证
DOI
高影响因子
ELECTROCHIMICA ACTA
·
2022
·
IF 7.336
Yu Rao,Kongjun Zhu,Hongcheng Li,Penghua Liang,Hongjuan Zheng,Jiatao Chen,Jie Zhang,Jinsong Liu,Kang Yan,Jing Wang
Hybrid-structured coupling metal dichalcogenides with carbon materials serve as prospective anode materials for lithium-ion batteries (LIBs) due to their high electrical conductivity, rich active sites, and Li + diffusion path for Li + storage. In the present work, graphene-wrapped ZnS−MoS 2 @carbon composites (ZnS−MoS 2 /rGO@C) are synthesized via high-temperature mixing during the hydrothermal and carbonation processes. The as-prepared ZnS−MoS 2 /rGO@C composites display alleviated volume change in the electrochemical process, increased Li + diffusion speed, and improved conductivity, which are caused by the synergic effect of phase boundaries and hierarchical construction. Therefore, the ZnS−MoS 2 /rGO@C composites show superior lithium storage capacity and structure stability, and possess ultrastable cycle (581.0 mAh g −1 after 500 cycles at 1 A g −1 ) and good rate performance (310.7 mAh g −1 at 5 A g −1 ). This work confirms that anode materials with a hybrid structure can be rationally engineered for high-performance LIBs with superior cycle durability and good rate capability.
研究领域:
材料科学
·
能源存储
✓ 已验证
DOI
高影响因子
JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY
·
2018
·Vol. 18
·期 1
·576-582
·
IF 1.354
Yu Yadong,Wu Na,Peng Gang,Li Tao,Jiang Ling,Huang He
Convenient and sensitive methods for the detection of α-ketoglutarate (α-KG) will be beneficial for biomedical diagnosis and microbial fermentation industry. In this work, reduced MoS2 nanoparticles (rMNs) were prepared by ultrasonication and electrochemical reduction.
The rMNs were then decorated with gold nanoparticles (Aunano) to fabricate rMNs-Aunano nanocomposite. The glass carbon electrode modified with rMNs-Aunano nanocomposite (rMNs-Aunano-GCE) showed excellent electro-catalytic oxidation toward NADH with
a satisfied reproducibility and exhibited linear response in the range of 38.46–214.29 μM. Moreover, the L-Glutamic dehydrogenase modified rMNs-Aunano-GCE exhibited a sensitive and fast response to α-KG, with a linear response range of 11.12–52.94 μM
and a detection limit of 6.25 μM. These findings will pave ways for the α-KG detection and the application of MoS2 or other two-dimensional materials in electrochemical sensing.
研究领域:
生物医学
·
微生物发酵工业
·
电化学传感
✓ 已验证
DOI
高影响因子
DALTON TRANSACTIONS
·
2025
·
IF 3.3
Caihong Fang,Ruihao Li,Yiting Zheng,Longhui Nie
The dual environmental challenges of solid waste magnetic steel slag (MSS) utilization and antibiotic pollution treatment require novel environmental remediation strategies. Herein, a novel MSS@MoS2 composite catalyst was prepared for the first time by an alkali pretreatment of MSS followed by one-step high-speed ball milling functionalization with MoS2. The optimized MSS@MoS2-50 catalyst showed outstanding peroxomonosulfate (PMS) activation capability, enabling efficient tetracycline hydrochloride (TCH) degradation across a broad pH range (2-11). Mechanistic investigations revealed the generation of multiple reactive species (1O2, O2-, OH, and SO4･-) through synergistic Fe2+/Fe3+ redox cycling and multi-valent Mo-mediated electron transfer. The catalytic activity of MSS@MoS2-50 showed only a 12% decrease after five cycles but almost recovered to the fresh level via a simple regeneration, showing good stability and renewability. The leaching of iron ions (<0.2 mg/L) after the reaction was below the standard for surface water. Also, it has good magnetic separability, showing good application potential. The three possible degradation pathways were posed by combining with the results of LC-MS and active species analysis. The toxicity of TCH can be effectively reduced after degradation by the T.E.S.T. toxicity analysis.
研究领域:
环境科学
·
材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CHEMOSPHERE
·
2021
·
IF 7.086
Zejun Liu,Jinquan Wan,Yongwen Ma,Yan Wang
The traditional Electro-Fenton (EF) is an efficient technology for wastewater treatment but suffers from the acidic condition requirement and external catalyst addition. To overcome these challenges, a GF@MoS 2 @FeOCl cathode was fabricated using a facile method. The as-prepared GF@MoS 2 @FeOCl cathode showed excellent performance for ciprofloxacin (CIP) degradation in EF process with RuO 2 /Ti electrode as the anode. H 2 O 2 was electro-generated and activated on-site at the cathode at mild pH without adding Fe 2+ . CIP was 100% removed with 74.4% of mineralization in 90 min at pH 6. The GF@MoS 2 @FeOCl cathode exhibited good reusability after consecutive runs of degradation. The degradation intermediates were investigated, and the possible mechanism was proposed. This work demonstrated that the prepared GF@MoS 2 @FeOCl cathode is a promising candidate for contaminants treatment in an EF system.
研究领域:
环境科学
·
材料科学
·
污水处理
✓ 已验证
DOI
PubMed
高影响因子
Nanoscale
·
2023
·Vol. 15
·期 24
·10437-10446
·
IF 6.7
Xiaodan Yin,Wei Zheng,Haifeng Tang,Peigen Zhang,ZhengMing Sun
Electrode materials play a crucial role in the electrochemical performance of supercapacitors (SCs). In recent years, 1T-MoS2 and MXene have been extensively studied as potential electrode materials. However, 1T-MoS2 suffers from the metastable property, rigorous synthesis process, and nanosheet restacking issue, while the specific capacitance of MXene is restricted, limiting their supercapacitor performance. To fully exploit the advantages of both materials and address their respective problems, 1T-MoS2/Ti3C2Tz 2D/2D heterostructures are synthesized through a simple hydrothermal method. The existence of heterojunctions is confirmed by XPS and TEM. The different ratios between MoS2 and Ti3C2Tz are investigated, and the electrochemical test is carried out in a “water-in-salt” electrolyte (20 mol kg−1 LiCl). The results demonstrate that the heterostructures exhibit enhanced electrochemical performance. The optimized ratio of 1T-MoS2/Ti3C2Tz is 2 : 1, and the specific capacitance reaches 250 F g−1 at 1 A g−1 with a wide potential window of −0.9 to 0.5 V vs. Ag/AgCl. The capacitance retention is 82.3% (at 10 A g−1) after 5000 cycles, and the average coulombic efficiency (ACE) was 99.96%. Assembled into symmetric SCs (SSCs), the energy density of 12.0 W h kg−1 at a power density of 139.9 W kg−1 is achieved with a high voltage of 1.4 V. It also has 82.6% capacitance retention and 99.95% ACE after 5000 cycles at 5 A g−1. This work is expected to stimulate novel research towards the wide application of 2D/2D heterostructures in SCs.
研究领域:
材料科学
·
电化学
·
纳米技术
·
能源存储
✓ 已验证
DOI
高影响因子
SEPARATION SCIENCE AND TECHNOLOGY
·
2019
·
IF 1.354
Xiaohai Bu,Shengwang Chen,Dongxian Li,Jinghan Liu,Zusheng Hang,Zewu Zhang,Li Zhang
In this paper, novel flower-like hollow MoS2 microspheres (FHMs) were synthesized by a hydrothermal method using MF microspheres as template. The FHMs were hydrophobically modified and utilized as porous fillers to fabricate FHMs/acrylic resin composites through suspension polymerization. The oil-absorption tests revealed that the composite with 4 wt% FHMs had a high oil-absorption capacity, which might be due to the synergistic absorption effect of organic and inorganic components. Their high absorption capacity, rapid absorption rate, and excellent reusability make them attractive options as absorbents for practical oil/water separation.
研究领域:
材料科学
·
环境科学
✓ 已验证
DOI
高影响因子
ELECTROCHIMICA ACTA
·
2024
·
IF 5.5
Leonardo Togar Samosir,Ferry Anggoro Ardy Nugroho,Vivi Fauzia
Electrochemical water splitting, a key process for extracting hydrogen energy from water, is recognized as a promising eco-friendly technology. Molybdenum disulfide (MoS 2 ), especially when possessing abundant defects, emerges as a cost-effective and efficient catalyst for hydrogen evolution reaction (HER), presenting a viable alternative to noble metals such as platinum (Pt). However, the impact of UV-Ozone (UVO) in generating defects in bulk 2H-MoS 2 remains underexplored. Here, we successfully synthesized 2H-MoS 2 using the hydrothermal method on a 3D conductive carbon cloth. Subsequently, the sample underwent UVO treatment for three different durations of 10, 30, and 50 min. Our results demonstrate that a 50-minute exposure to UVO yields the most effective HER performance, with a significant decrease in the onset potential from 189 mV to 116 mV and a low Tafel slope of 64 mV/decade. This enhancement is attributed to increased surface activity, evident in a more than fourfold increase in double-layer capacitance ( C dl ). Importantly, the 50-minute UVO treatment not only significantly improves the purity of MoS 2 and increases the number of edge sites, but also lead to an increase in sulfur vacancies and the formation of amorphous oxygen-incorporated MoS x . These edge sites, along with sulfur vacancies and oxygens incorporation, are considered ideal for hydrogen binding, enhancing electron transport, and improving HER activity.
研究领域:
材料科学
·
能源技术
·
催化化学
✓ 已验证
产品关联
DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2021
·
IF 6.707
Wenwen Wang,Shihui Jiao,Boran Wang,Yumei Tan,Yue Zhao,Qi Zhang,Yutang Kang,Xinyan Lv,Canyu Cui,Guangsheng Pang
MoS 2 /CuS nanosheets coated on brass mesh with switchable superwettability have been prepared through a facile hydrothermal method. The MoS 2 /CuS coated mesh shows excellent underwater superlyophobicity and underliquid superhydrophobicity for gravity-driven immiscible organic solvent/water mixtures separation. Switchable permeation function of water-removing or organic solvent-removing can be achieved by water or organic solvent pre-wetted mesh. After 20 cycles of organic solvent/water separation, the MoS 2 /CuS coated mesh demonstrates high separation efficiency above 99.5% for both of cyclohexane/water mixture and tetrachloroethylene/water mixture. The MoS 2 /CuS coated mesh presents satisfactory chemical stability under acidic or alkaline conditions in the pH range of 1–13. The switchable superwetting property and chemical stability make it possible to be a potential candidate in separation of immiscible organic solvent/water mixture.
研究领域:
材料科学
·
环境工程
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）