LANGMUIR
·
2026
·
IF 4.4
Zhenyu Wen,Wenjie Zhu,Huanhuan Sun,Yongxue Chen,Yuling Yang,Wutao Yang,Yanping Song,Wei Xie
Flexible and application-oriented surface-enhanced Raman spectroscopy (SERS) substrates are in high demand for trace-level molecular detection in complex environmental matrices. Herein, we report the development of a flexible hybrid SERS substrate supported on polydimethylsiloxane (PDMS), integrating phase-engineered 1T/2H-MoS2 nanoclusters decorated with Au nanoparticles (denoted as PDMS@1T/2H-MoS2@Au). Benefiting from the synergistic coupling between localized surface plasmon resonance (LSPR) of Au nanoparticles and charge-transfer-induced chemical enhancement from 1T/2H mixed-phase MoS2, the as-fabricated substrate exhibits strong and tunable SERS responses under multiwavelength excitation. Systematic SERS performance evaluations demonstrate that the substrate achieves high sensitivity with a detection limit down to 10–10 M for methylene blue (MB), excellent signal uniformity with a relative standard deviation (RSD) of 6.57%, and long-term stability with negligible signal degradation over 2 months, outperforming most flexible SERS substrates. Notably, multivariate analysis based on principal component analysis (PCA) reveals selective signal amplification toward MB in multicomponent dye systems, where the first principal component shows a strong correlation with the Raman fingerprint of MB. After spectral normalization, the PCA score plots further confirm the reliable molecular discrimination capability among multiple dye molecules. Importantly, the practical applicability of the flexible PDMS@1T/2H-MoS2@Au substrate is validated by the trace-level detection of the pesticide thiram on real apple surfaces through conformal contact, achieving a detection limit as low as 10–9 M. This work presents an application-focused sensing workflow, from the elucidation of the enhancement mechanism to real-sample analysis, highlighting the great potential of flexible MoS2–Au hybrid SERS substrates for advanced environmental and food safety molecular sensing.
✓ 已验证
DOI
PubMed
高影响因子
ACS Nano
·
2024
·
IF 15.8
Wenhao Wang,Wenwei Zhang,Ruohan Yu,Fan Qiao,Jilin Wang,Junjun Wang,Qinyou An
The moderate working voltage and high capacity of transition metal dichalcogenides (TMDs) make them promising anode materials for aqueous calcium-ion batteries (ACIBs). However, the large radius and two charges of Ca2+ cause TMDs to exhibit poor performance in ACIBs. Therefore, effective regulation strategies are crucial for enabling the application of TMDs in ACIBs. Herein, MoS2 with expanded interlayer spacing and an enriched 1T phase (ES-1T-MoS2) is constructed by molecular engineering and reported as an anode material for ACIBs. Molecular engineering increases the capacity of MoS2 from 29.4 to 91.2 mAh g–1 and improves its rate performance from 20 to 76.1 mAh g–1 at 2.0 A g–1. ES-1T-MoS2 also shows a −20 to 50 °C wide temperature working capability. Furthermore, the capacity improvement reasons and the calcium storage mechanism of ES-1T-MoS2 are revealed through density functional theory calculations and in situ/ex situ characterizations. Finally, a “rocking-chair” aqueous calcium-ion pouch cell with a Prussian blue analogue cathode and ES-1T-MoS2 anode is assembled. The pouch cell exhibits a life of 150 cycles with over 90.8% capacity retention at 0 and 25 °C. This work demonstrates that molecular engineering is an effective strategy to improve the calcium storage performance of TMDs and promotes the advancement of ACIBs.
研究领域:
材料科学
·
电化学
·
储能
·
纳米材料
·
电池技术
✓ 已验证
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2022
·
IF 9.965
Yanqin Xue,Yanyan Xu,Qing Yan,Kai Zhu,Ke Ye,Jun Yan,Qian Wang,Dianxue Cao,Guiling Wang
The development of efficient catalysts for hydrogen evolution reaction (HER) from water splitting is one of the most promising strategies to achieve the goal of peak carbon dioxide emissions and carbon neutrality . Herein, Ru nanoclusters decorated MoSe 2 nanosheets supported on a Crepis tectorum fluff biomass-derived hollow carbon tube (Ru-MoSe 2 /CMT) are prepared as the HER catalysts in both alkaline and acidic conditions. The Ru modification induces the transformation of MoSe 2 from 2H phase to 1T phase. Benefiting from the strong water dissociation ability of Ru, Ru-MoSe 2 /CMT exhibits a low overpotential of 70 mV with a Tafel slope of 39 mV dec -1 in 1 M KOH. Furthermore, the assembled Ru-MoSe 2 /CMT || RuO 2 system with a low cell voltage of 1.54 V at 10 mA cm −2 exhibits outstanding overall water splitting performance superior to Pt/C || RuO 2 system. The Ru-MoSe 2 /CMT || RuO 2 system also achieves the excellent stability of up to 30 h in 1 M KOH. The synergy effect between Ru and MoSe 2 , as well as the improved electron transfer kinetics provided by the biomass-derived carbon substrate together contribute to the excellent HER activity of Ru-MoSe 2 /CMT.
研究领域:
材料科学
·
催化化学
·
能源科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2022
·
IF 9.965
Lei Ding,Fei Qi,Yanfei Li,Jian Lin,Yang Su,Yihan Song,Lijing Wang,Haizhu Sun,Cuiyan Tong
The high photogenerated carrier recombination rate and the low visible light utilization limit the development of graphitic carbon nitride (CN) in industrial photocatalytic H 2 generation. Herein, 1T-phase MoS 2 nanoparticles with high conductivity and more active sites are in-situ grown on B-doped carbon nitride (CNB) nanosheets through a one-step hydrothermal method. The doping of boron element effectively improves the harvesting visible light ability by tuning the energy gap, while the introduction of 1T-phase MoS 2 successfully increases the carrier transfer rate by suppressing charge trapping. An optimized H 2 production activity of 5334 μmol h −1 g −1 with the apparent quantum efficiency of 10.2% is achieved by 1T-MoS 2 /CNB sample, which is 167 times higher than that of pure CN. The mechanism is systematically illustrated by the combination of DFT calculations and transient absorption measurements. This work provides a new way for the construction of transition metal-derived co-catalysts in photocatalytic hydrogen energy storage.
研究领域:
材料科学
·
能源化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
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.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
·
2025
·
IF 3.9
Tong Cheng,Qi-Bo Wang,Qin-Qin Xu,Zhen-Hua Han,Jian-Zhong Yin
Mo doping optimizes the electronic structure of ReS2. MoxRe(1–x)S2/MoS2 alloy heterojunction exhibits more favorable application prospects in photodetection due to its higher electrical conductivity than ReS2/MoS2 heterojunction. However, alloy heterojunctions are difficult to prepare controllably using conventional vapor-phase chemical vapor deposition (CVD), and the heterojunction growth mechanism remains unclear. Here, a vapor–liquid–solid temperature-gradient process is proposed to grow alloy heterojunctions within predeposited molten Mo precursor droplets. The sulfuration reaction between Re diffusing into the droplet and Mo atoms facilitates the formation of alloy structures. The growth temperatures TRe and TMo in the temperature-gradient significantly affect the growth patterns and morphology evolution of the heterojunction. The MoS2 morphology in vertical alloy heterojunctions becomes triangular as the growth temperature increases. The dimension of the top MoxRe(1–x)S2 alloy is positively correlated with the Re diffusion concentration. Moreover, lateral alloy heterojunctions and single alloys are formed at lower and higher growth temperature differences between TRe and TMo, respectively. These results provide a controllable strategy for the synthesis of isotropic/anisotropic van der Waals TMDC heterojunctions.
研究领域:
材料科学
·
纳米技术
·
半导体物理
✓ 已验证
产品关联
DOI
高影响因子
MATERIALS RESEARCH BULLETIN
·
2025
·
IF 5.7
Dawei Gao,Haixiang Wang,Jiajun Tang,Qiaoli Lu,Feifei You,Chao Ye,Lili Wang,Jian Qi
Conventional MoS 2 catalysts face challenges, including weak piezoelectric response, reliance on energy-intensive ultrasound, and limited active sites, reducing their efficiency in degrading organic pollutants. In this work, 1T/2H heterostructured MoS 2 nanoflowers were synthesized via an ionic liquid-assisted hydrothermal method, enabling efficient piezocatalytic activation of peroxymonosulfate (PMS) under mild mechanical stirring. The 1T/2H MoS 2 /PMS system rapidly degraded 95.9 % of Rhodamine B in 15 min, with a kinetic rate 4.43 times higher than conventional MoS 2 , and showed excellent cycling stability. This superior performance was due to enhanced piezoelectric polarization at heterointerfaces, which improved charge carrier separation, and the use of low-energy mechanical stirring instead of ultrasound for activation. Optimized interfacial charge transfer pathways also boosted the generation of superoxide anions (•O₂⁻) and singlet oxygen (¹O 2 ). Moreover, immobilizing 1T/2H MoS 2 on conductive carbon cloth enhanced recyclability and operational feasibility, offering a sustainable solution for water treatment technologies.
研究领域:
环境科学
·
材料科学
·
催化
·
纳米技术
·
水处理
✓ 已验证
产品关联
DOI
高影响因子
APPLIED CATALYSIS B-ENVIRONMENTAL
·
2025
·
IF 21.1
Lingtun Hao,Maofeng Ding,Song Song,Yong You,Xingang Li
Photocatalytic amino acid synthesis from biomass is a promising and renewable method, yet the synthesis efficiency remains suboptimal. Here, we report a novel strategy for synthesizing 2D/2D CdS/1T-MoS 2 heterojunctions by leveraging 1T-phase MoS 2 with distorted octahedral coordination and sulfur-rich edges to promote the formation of large contact areas and abundant interfacial sulfur vacancies in combination with CdS. CdS/1T-MoS 2 displays exceptional photocatalytic performance for amination of biomass-derived α-hydroxy acids to α-amino acids, achieving an alanine formation rate of 23.3 mmol·g -1 ·h -1 from lactic acid, which is 4.4 and 1.6 times higher than those of CdS and CdS/2H-MoS 2 , respectively. Detailed characterizations reveal that CdS/1T-MoS 2 possesses abundant interfacial sulfur vacancies at the 2D/2D heterojunction interface compared to CdS and CdS/2H-MoS 2 . These vacancies create numerous Lewis acids sites, significantly enhancing the adsorption and activation of hydroxyl groups in lactic acid, thereby promoting the dehydrogenation step. Moreover, CdS/1T-MoS 2 facilitates the condensation of pyruvic acid with ammonia and promotes the desorption of alanine from the catalyst surface, effectively improving the reductive amination step. Additionally, CdS/1T-MoS 2 exhibits superior charge carrier separation and migration efficiency, further boosting its photocatalytic amination activity. This study provides a novel strategy for synthesizing 2D/2D heterojunctions with abundant interfacial vacancies for efficient photocatalytic biomass valorization.
研究领域:
材料科学
·
催化化学
·
生物工程
✓ 已验证
产品关联
DOI
高影响因子
MOLECULES
·
2025
·Vol. 30
·期 11
·2343
·
IF 4.6
Xinyue Li,Yahui Song,Yiming Huang,Jihui Zhang,Siyu Wu,Wentao Zhang,Jin Wang,Xian Zhang
MoS2has emerged as a highly promising catalyst for the hydrogen evolution reaction (HER) owing to its exceptional catalytic properties. However, there is a pressing need to further enhance its reactivity and integrate oxygen evolution reaction (OER) capabilities to facilitate its industrial implementation. In this context, a dual-metal doping approach presents a straightforward and effective strategy to achieve superior catalytic performance. Systematic characterization and electrochemical evaluations reveal that the synergistic effects of Co and Fe doping significantly enhance both HER and OER activities, demonstrating remarkable potential for practical applications in energy conversion and storage systems. The unique flower-like architecture of the material endows it with a substantially enlarged surface area, which significantly increases the exposure of active sites and facilitates enhanced catalytic activity. Specifically, it achieves the low overpotentials of −127 and 292 mV at 10 mA cm−2for HER and OER in alkaline media, respectively, and demonstrates excellent stability over a 10 h test. This research provides valuable insights into the development of advanced materials capable of efficiently performing both HER and OER processes, paving the way for potential applications in sustainable energy technologies.
研究领域:
材料科学
·
电催化
·
能源转换与存储
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2021
·
IF 8.128
Zi Ying,Yu Lv,Haixiang Song,Yujie Ma,Riming Chen,Metini Janyasupab,Lingyan Feng,Yuan Zhang
High efficient and durable catalysts are always needed to lower the kinetic barriers as well as prolong the service life associated with oxygen evolution reaction (OER). Herein, a sequential synthetic strategy is considered to prepare a hierarchical nanostructure , in which each component can be configured to achieve their full potential so that endows the resulting nanocatalyst a good overall performance. In order to realize this, well-organized cobalt oxide (Co 3 O 4 ) nanopillars are firstly grown onto ultrathin 1T-molybdenum sulfide (1T-MoS 2 ) to obtain high surface area electrocatalyst , providing electron transfer pathways and structural stability. After that, zeolitic imidazolate framework-67 (ZIF-67) derived carbonization film is further in situ deposited on the surface of nanopillars to generate plentiful active sites, thereby accelerating OER kinetics. Based on the combination of different components, the electron transfer capability, catalytic activity and durability are optimized and fully implemented. The obtained nanocatalyst (defined as 1T-MoS 2 /Co 3 O 4 /CN) exhibits the superior OER catalytic ability with the overpotential of 202 mV and Tafel slope of 57 mV·dec −1 at 10 mA·cm −2 in 0.1 M KOH, and good durability with a minor chronoamperometric decay of 9.15 % after 60,000 s of polarization.
研究领域:
材料科学
·
电化学
✓ 已验证
DOI
PubMed
高影响因子
JOURNAL OF MOLECULAR STRUCTURE
·
2023
·
IF 3.8
Xin Yan,Na Zhang,Zhiliang Liu,Chunfang Du
In this paper, 1T/2H mixed-phase MoS 2 /g-C 3 N 4 composites (1T/2H-MG) were successfully synthesized by a simple two-step calcination method and used for Cr(VI) removal from aqueous environment. A series of characterization methods were used to characterize the microstructure and surface morphology of the prepared materials. The experiment results showed that 1T/2H-MG (1:12) composite with good pH and temperature adaptability could completely remove Cr(VI) (100 mg∙L –1 ) within 50 min and showed an excellent adsorption capacity of 342.06 mg∙g –1 . The presence of abundant sulfur defects in 1T/2H-MG composite could provide more adsorption and reduction active sites, which was the main reason for the enhanced removal efficiency of 1T/2H-MG in comparison with pure MoS 2 and g-C 3 N 4 . This work not only contributes an excellent adsorbent for the wastewater treatment, but also provides evidences for the defects engineering.
研究领域:
环境科学
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
APPLIED CATALYSIS B-ENVIRONMENTAL
·
2018
·
IF 11.698
Yunpeng Liu,Yuhang Li,Feng Peng,Yuan Lin,Siyuan Yang,Shengsen Zhang,Hongjuan Wang,Yonghai Cao,Hao Yu
Recently, MoS 2 as an efficient co-catalyst has attracted much attention for photocatalytic water splitting. MoS 2 has two polymorphs: semiconducting phase (2H) and metallic phase (1T). The 2H- and 1T- MoS 2 show different reaction mechanism in photocatalytic H 2 evolution. However, so far, very few experiments have clearly evidenced the electron transfer process between TiO 2 and mixed phase MoS 2 . This study for the first time has reported a simple hydrothermal synthesis method to prepare mixed phase few-layer MoS 2 nanosheets coated on TiO 2 nanorod arrays (MoS 2 @TiO 2 ) with a conductive fluorine-doped tin oxide (FTO) as a substrate. The structure of mixed phase MoS 2 was characterized carefully. The designed MoS 2 @TiO 2 exhibits two times higher activity than Pt@TiO 2 for photocatalytic H 2 evolution. The reliable conclusion that the photo-generated electrons from TiO 2 to MoS 2 nanosheets has clearly been evidenced by photoelectrochemical analyses and in-situ KPFM experiments, and the mixed phase MoS 2 here is a co-catalyst such like Pt rather than as a semiconductor. This study not only presents a series of solid experimental evidences to verify the electrons transfer process and photocatalytic mechanism, but also provides a new method in substituting MoS 2 for noble metal Pt as co-catalyst in high-efficiency photocatalytic water splitting into hydrogen.
研究领域:
材料科学
·
能源科学
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）