Nanomaterials
·
2022
·Vol. 12
·期 16
·2834
·
IF 5.719
Yun He,Hongjie Gao,Jiankang Liu
Diclofenac is a non-steroidal, anti-inflammatory drug and is clinically used for the treatment of osteoarthritis, non-articular rheumatism, etc. This research aimed to demonstrate the creation of an upgraded photoelectrochemical (PEC) aptamer sensor for detecting diclofenac (DCF) with high sensitivity. In this work, photoactive materials and bio-identification components served as visible-light-active CuS/MoS2/Bi2WO6heterostructures and aptamers, respectively. CuS and MoS2/Bi2WO6were combined to improve photocurrent responsiveness, which helped the structure of PEC aptasensors. Additionally, the one-pot synthesis of CuS/MoS2/Bi2WO6was ecologically beneficial. With these optimizations, the photocurrent response of aptamer/CS/CuS/MoS2/Bi2WO6exhibited linearity between 0.1 and 500 nM DCF. The detection limit was 0.03 nM (S/N = 3). These results suggest that the PEC sensing technique might produce an ultra-sensitive sensor with high selectivity and stability for DCF detection.Keywords:photoelectrochemical;CuS/MoS2/Bi2WO6;diclofenac (DFC);heterostructure;aptasensors
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DOI
PubMed
高影响因子
VACUUM
·
2024
·
IF 3.8
Lianbi Li,Lihan Wang,Binbin Ding,Denghui Yan,Zelong Li,Xiaolong Ren,Yuan Zang,Song Feng,Zebin Li,Guoqing Zhang,Qinglong Fang,Caijuan Xia
Transition-metal dichalcogenides (TMDs) show great potential for next-generation semiconductor due to its atomic level thickness, tunable band gap and high carrier mobility. However, high-quality monolayer MoS 2 (ML-MoS 2 ) films require stringent growth conditions during preparation. Here, we report a face-to-face metal precursor supply approach during chemical vapor deposition (CVD) to batch production of uniform ML-MoS 2 films. Mo foils provide a stable concentration of metal precursors leading to uniform film generation with low nucleation. Comprehensive characterization techniques, including spectroscopic, surface topography and atomic scale analysis confirm the centimeter-scale homogeneity and high crystallographic quality of the monolayer films. Back-gate field effect transistors (FET) fabricated by ML-MoS 2 exhibit excellent electrical performance. This methodology provides a pathway for the growth of TMDs, which should promote their applications in high-performance electronics or other fields.
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DOI
高影响因子
Materials Today Chemistry
·
2018
·
IF 0
Dongmei Lin,Zhiqiang Su,Gang Wei
Three-dimensional (3D) graphene-based nanomaterials have shown wide applications in electrochemical fields such as biosensors. In this study, we displayed a simple fabrication of 3D structural reduced graphene oxide (3D structural RGO) decorated with molybdenum disulfide quantum dots (MoS 2 QDs) through a three-step reaction process. With its abundant raw materials, this strategy is economic and non-toxic. Various characterization techniques were utilized to characterize the morphologies of the synthesized MoS 2 QDs, graphene oxide (GO), and 3D structural RGO-MoS 2 QDs composites. Simultaneously, X-ray photoelectron spectroscopy was applied to characterize the structure and properties of composites. In order to understand the effects of the reaction period on the structure of 3D structural RGO-MoS 2 QDs, a series of samples with various reaction periods were prepared for morphological characterization. Finally, the fabricated 3D structural RGO-MoS 2 QDs composites were used to modify a glassy carbon electrode as an electrochemical non-enzymatic hydrogen peroxide (H 2 O 2 ) sensor. The obtained results indicate that the fabricated electrochemical H 2 O 2 sensor exhibits a wide detection range (0.01–5.57 mM), low detection limit (1.90 μM), good anti-interference performance, and long-time stability (18 days).
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DOI
ACS Applied Materials & Interfaces
·
2024
·
IF 8.3
Juanjuan Yang,Jiaming Song,Xin Zhao,Linghao Zong,Shuxian Wang,Bingda Li,Yuting Li,Guoshuai Ban,Zhuo Wang,Zijuan Ma,Peng Hu,Feng Teng
Transition metal thiophosphates (MTPs) are a group of emerging van der Waals materials with widely tunable band gaps. In the MTP family, CdPSe3 is demonstrated to possess a wide energy band gap and high carrier mobility, making it a potential candidate in optoelectronic applications. Here, we reported photoelectric response behaviors of both CdPSe3- and CdPSe3/MoS2-based photodetectors (noted as CPS and CM, respectively); these showed prominent photoelectric performances, and the latter proved to be significantly superior to the former. These devices exhibited ultralow dark current at a magnitude order of 10–12 A and fine cycle and air stabilities. Compared with CPS, CM demonstrated the highest responsivity (91.12 mA/W) and detectivity (1.74 × 1011 Jones) at 5 V under 425 nm light illumination. Besides, CM showed self-powered photoelectric responses at zero bias, which was attributed to the improved separation efficiency of photogenerated carriers by the built-in electric field at the interface of the p–n junction. This work proves a prospect for the CM device in portable, self-powered optoelectronic device applications.
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DOI
高影响因子
ChemElectroChem
·
2022
·Vol. 9
·期 15
·e202200420
·
IF 4.782
He Li,Fei Xie,Rony Snyders,Carla Bittencourt,Wenjiang Li
Graphical Nitrogen doping for enhanced HER : A hetero-structured electrocatalyst, which features defect-rich N-doped MoS 2 ultrathin nanosheets anchored on N-doped carbon nanotubes, was constructed via a facile one-pot solvothermal route using urea as N-doping reagent, achieving the in-depth enhancement of hydrogen evolution reaction (HER). Molybdenum disulfide (MoS 2 ) has emerged as an attractive non-noble-metal electrocatalyst for hydrogen evolution reaction (HER), but its performance is limited by scarce active sites and poor conductivity. Herein, we construct a hetero-structure of nitrogen-doped MoS 2 ultrathin nanosheets anchored on nitrogen-doped multi-walled carbon nanotubes (N−MoS 2 /N−CNTs) using urea as N-doping reagent. It is demonstrated that the N species can expand the interlayer spacing of MoS 2 and in-situ substitute the S atoms in MoS 2 lattices to create more structural defects, enabling highly exposed basal plane/edge sites. Simultaneously, N species in CNTs favor the interface coupling between N−MoS 2 and N−CNTs, which can maintain structural stability and accelerate electron/proton reaction kinetics. Consequently, N−MoS 2 /N−CNTs exhibits the in-depth enhancement of HER activity with a low onset potential (77 mV), small Tafel slope (40.5 mV dec −1 ) and excellent cycling stability. Furthermore, the essential relationship between the N-doping concentration and HER activity of N−MoS 2 /N−CNTs was demonstrated.
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DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2024
·
IF 9.4
Li-Jie He,Jia Liu,Ting-Ting Lv,Ao-Cheng Wei,Tong-Qi Yuan
The practical applications of lithium-sulfur (Li-S) batteries have severely been hindered by notorious shuttle effect and sluggish redox kinetics of lithium polysulfide intermediates (LiPSs), which bring about rapid capacity degradation, low coulombic efficiency and poor cycling stability. In this work, 1T-rich MoS 2 nanosheets are in-situ developed onto the conductive porous carbon matrix (1T-rich MoS 2 @PC) as efficient polysulfide promotors for high-performance Li-S batteries. The porous carbon skeleton tightly anchors MoS 2 nanosheets to prevent their reaggregation and ensures accessible electrical channels, and at the same time provides a favorable confined space that promotes the generation of 1T-rich MoS 2 structure. More importantly, the uniformly distributed metallic 1T-rich MoS 2 nanosheets not only affords rich sulfphilic sites and high binding energy for immobilizing LiPSs, but also favors rapid electron transfer and LiPSs conversation kinetics, substantially regulating sulfur chemistry in working cells. Consequently, the Li-S cell assembled with 1T-rich MoS 2 @PC modified separator delivers a remarkable cycling stability with ultralow capacity decay rate of 0.067% over 500 cycles at 1C. Encouragingly, under harsh conditions (high sulfur loading of 4.78 mg cm −2 and low E/S ratio of 8 μL mg −1 ), a favorable electrochemical performance can still be demonstrated. This study highlights the profitable design of 1T-rich MoS 2 /carbon based electrocatalyst for suppressing shuttle effect and promoting catalytic conversation of LiPSs, and has the potential to be applied to in other energy storage systems.
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DOI
高影响因子
SURFACE AND INTERFACE ANALYSIS
·
2023
·Vol. 56
·期 1
·22-31
·
IF 1.7
Binbin Ding,Changjun Zhu,Tianming Wang,Lianbi Li,Zebin Li,Lin Cheng,Song Feng,Guoqing Zhang,Yuan Zang,Jichao Hu,Lei Li,Caijuan Xia
The epitaxial growth of high-quality and large-area monolayer (ML) MoS 2 has attracted widespread attention in recent years. Here, MoS 2 on Al 2 O 3 substrate was prepared by using atmospheric-pressure chemical vapor deposition. The process parameters such as temperature difference and distance between MoO 3 and Al 2 O 3 , nucleation temperature, and heating rate were optimized. The high MoO 3 evaporation temperature facilitates Mo vapor transport to grow ML-MoS 2 . The introduction of nucleation temperature facilitates the deposition of MoS 2 , and the morphology of the nucleation point is related to the amount of MoO 3-x deposited on Al 2 O 3 . This process optimization method is also applicable to growth MoS 2 on SiO 2 . The ML-MoS 2 with a size greater than 1 cm 2 was successfully fabricated on Al 2 O 3 and SiO 2 , which laid a foundation for the practical application of ML-MoS 2 .
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DOI
高影响因子
ELECTROCHIMICA ACTA
·
2022
·
IF 7.336
Usman Ghani,Nousheen Iqbal,Jinghan Li,Ahmed A. Aboalhassan,Boya Sun,Bowen Liu,Farman Ullah,Johar Zeb,Muhammed Imtiaz,Jiajun Gu,Qinglei Liu
Porous hard carbons (PHC) are promising anode materials in sodium-ion batteries; however, the availability of large surface area creates numerous irreversible active sites that cause rapid initial cycle capacity fading and electrode degradation, resulting in lower specific capacity and poor cycle stability. PHC surface modification via 2D transition metal dichalcogenides is a synergistic approach to combine excellent electrochemical properties of both materials and resolve these issues. Therefore, we designed 1T MoS 2 nanopatterned PHC skeleton using carbonization and hydrothermal treatment of biomass (chickpea husk). As a result, HC@MoS 2 -II electrode with extended d 002 spacing of MoS 2 nanolayers (0.650 nm) exhibited an excellent specific capacity of 470 mAh/g at 50 mA/g with high initial coulombic efficiency (63%) and ultra-long cycle stability (190 mAh/g) at 1000 mA/g over 3500 cycles. The extraordinary electrochemical performance can be attributed to the synergistic assembly, where the high surface area PHC skeleton effectively buffered large volume expansion during charging/discharging, and 1T MoS 2 nanoflowers added fast ionic diffusion kinetics and PHC surface protection.
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DOI
高影响因子
CHINESE CHEMICAL LETTERS
·
2019
·
IF 3.839
Tong Guo,Lina Wang,Sen Sun,Yan Wang,Xiaoling Chen,Kangning Zhang,Dongxia Zhang,Zhonghua Xue,Xibin Zhou
A novel three-dimensional (3D) layered MoS 2 @graphene functionalized with nitrogen-doped graphene quantum dots (MoS 2 @N-GQDs-GR) composites as an enhanced electrochemical hydrogen evolution catalyst. The few layered MoS 2 nanoflowers supported on N-GQDs-GR surface were elaborately fabricated by one-pot hydrothermal method, which MoS 2 and N-GQDs-GR exist in a bonding manner of Mo-N. In addition, due to the layered MoS 2 sheet edge exposes more hydrogen evolution active sites and N-GQDs-GR have high conductivity, the composites exhibit prominent electrocatalytic activity with a low overpotential 99 mV, a small Tafel slope 49.3 mV/dec. Therefore, that the current work will develop HER catalysts may replace Pt.
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DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2019
·
IF 8.355
Yue Tian,Xiaoyan Liu,Xiaoqing Cao,Dieqing Zhang,Shuning Xiao,Xinru Li,Zaiyuan Le,Xianyang Li,Hexing Li
1T MoS 2 has recently attracted growing interests for energy storage due to the excellent conductivity, expanded layer space and extra exposed active sites. However, its application is still limited due to the complicated synthesis under harsh condition and poor structural stability. Herein, we report a novel MoS 2 /Cu nanowires (NWs) by microwave-assisted self-assembly of ultrathin 1T MoS 2 onto Cu NWs with interconnected conductive network and robust one-dimensional (1D) structure. As anode material for LIBs, 1T MoS 2 /Cu NWs exhibits high capacity and stability owning to the enhanced electron transport and lithium ions intercalation. Meanwhile, the enriched nanovoids supply extended space for buffering the volume change and boosting electrolyte penetration during cycling process. Moreover, Cu doped MoS 2 could also stabilize the 1T phase, leading to the excellent anode durability. It delivers a high reversible capacity of 570.6 mAh g −1 after 250 cycles at a current density of 0.5 A g −1 . Enhanced rate performance is also achieved with excellent capacity retention of 914.6 mAh g −1 at 0.1 A g −1 and 465.2 mAh g −1 at 2 A g −1 , respectively.
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DOI
高影响因子
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
·
2018
·
IF 4.229
Xiaoling Chen,Kangning Zhang,Zhenzhen An,Lina Wang,Yan Wang,Sen Sun,Tong Guo,Dongxia Zhang,Zhonghua Xue,Xibin Zhou,Xiaoquan Lu
A novel three-dimensional (3D) hybrid consisting of molybdenum disulfide nanosheets (MoS 2 ) uniformly bound at N-doped macro-mesoporous carbon (N-MMC) surface was fabricated by the solvothermal method . The resulting MoS 2 /N-MMC hybrid possesses few-layer MoS 2 nanosheets structure with abundant edges of MoS 2 exposed as active sites for hydrogen evolution reaction (HER), in sharp contrast to large aggregated MoS 2 nanoflowers without N-MMC. The high electric conductivity of N-MMC and an abundance of exposed edges on the MoS 2 nanosheets make the hybrid excellent electrocatalytic performance with a low onset potential of 98 mV, a small Tafel slope of 52 mV/decade, and a current density of 10 mA cm −2 at the overpotential of 150 mV. Moreover, the MoS 2 /N-MMC hybrid exhibits outstanding electrochemical stability and structural integrity owing to the strong bonding between MoS 2 nanosheets and N-MMC.
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DOI
高影响因子
Small Methods
·
2020
·Vol. 4
·期 9
·2000353
·
IF 12.13
Mingshan Wang,Hua Yang,Kangqi Shen,Hao Xu,Wenjie Wang,Zhenliang Yang,Lei Zhang,Junchen Chen,Yun Huang,Mingyang Chen,David Mitlin,Xing Li
A stable lean-electrolyte operating lithium–sulfur (Li–S) battery based on a cathode of Li 2 S in situ electrocatalytically deposited from L 2 S 8 catholyte onto a support of metallic molybdenum disulfide (1T-MoS 2 ) on carbon cloth (CC) is created. The 1T-MoS 2 significantly accelerates the conversion Li 2 S 8 catholyte to Li 2 S, chemically adsorbs lithium polysulfide (LiPSs) from solution, and suppresses crossover of the LiPSs to the anode. These experimental findings are explained by density functional theory calculations that show that 1T-MoS 2 gives rise to strong adsorption of polysulfides on its surface and is electrocatalytic for the targeted reversible Li–S conversion reactions. The CC/1T-MoS 2 electrode in a Li–S battery delivers an initial capacity of 1238 mAh g −1 , with a low capacity fade of only 0.051% per cycle over 500 cycles at 0.5 C . Even at a high sulfur loading (4.4 mg cm −2 ) and low electrolyte/S (E/S) ratio of 3.7 µL mg −1 , the battery achieves an initial reversible capacity of 1176 mA h g −1 at 0.5 C , with 87% capacity retention after 160 cycles. The post 500 cycles Li metal opposing 1T-MoS 2 is substantially smoother than the Li opposing CC, with XPS supporting the role of 1T-MoS 2 in inhibiting LiPSs crossover.
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DOI
高影响因子
危险品化学品经营许可证（带存储）