Metallic 1T-MoS2 Research Articles

Bottom-up Synthesis of Highly Chiral 1T Molybdenum Disulfide Nanosheets.

Chirality in inorganic nanostructures has recently stimulated the attention of many researchers, both to unravel fundamental questions on the origin of chirality in inorganic and hybrid materials, as well as to introduce novel promising properties that are originated by the symmetry breaking. MoS2 is one of the most investigated among the large family of layered transition metal dichalcogenides. In particular, the metastable metallic 1T-MoS2 phase is of large interest for potential applications. However, due to thermodynamic reasons, the synthesis of 1T-MoS2 phase is quite challenging. Herein, we present the first synthesis of chiral 1T-MoS2 phase which shows remarkably high chiroptical activity with a g-factor up to 0.01. Chiral 1T-MoS2 was produced using tartaric acid as a chiral ligand to induce symmetry breaking during the material's growth under hydrothermal conditions, leading to the formation of distorted hierarchical nanosheet assemblies exhibiting chiral morphology. Thorough optimization of the synthetic conditions was carried out to maximize chiroptical activity, which is strongly related to the nanostructures' morphology. Finally, the formation mechanism of the chiral 1T-MoS2 nanosheet assemblies was investigated, focusing on the role of molecular intermediates in the growth of the nanosheets and the transfer of chirality.

Vanadium doped in-plane 1T-2H molybdenum disulfide heterostructure as efficient electrocatalyst for lithium-sulfur batteries

The active electronic states in 1T-MoS2 are highly desirable for catalyzing polysulfides conversion. However, stable 1T-MoS2 is difficult to produce using common approaches. Herein, V uniformly doped in-plane 1T-2H heterostructured MoS2 nanosheets (V-MoS2) are prepared by a facile hydrothermal method with a polyoxometalate precursor containing periodic Mo and V atomic arrangement. The doping of V induces the phase transition from semiconducting 2H-MoS2 to metallic 1T-MoS2 and stabilizes the resulted 1T phase. Importantly, the incorporation of V not only modifies the surface electronic property of MoS2, enhancing the active site density, but also improves the adsorption of polysulfides and the catalytic efficiency for sulfur redox reactions. With these advantages, the Li-S batteries using V-MoS2 electrocatalyst achieve accelerated reaction kinetics and superior electrochemical performance. When the S loading of the cathode is 5.41 mg cm−2, a favorable discharge capacity of 4.98 mAh cm−2 is obtained with satisfying cycle stability. This work provides an efficient atomic engineering approach for the design of high performance electrocatalyst for Li-S batteries.

Metallic 1T-MoS2 boosts the kinetics for NiS2-based hybrid supercapacitors with superb rate performance

NiS2 with high theoretical capacitance shows great potential for supercapacitors (SCs). However, the poor cycling stability and sluggish redox kinetics have limited the development of high-rate NiS2-based SCs. Integrating materials with high conductivity potentially reinforces its structure and improves its rate capability. 1T-MoS2 featuring extended interlayer spacing and superior electronic conductivity emerges as an ideal candidate. Therefore, we designed a hybrid material with an alternating interconnected structure of NiS2 and MoS2 with adjustable content of 1T-MoS2. Owing to the improved ion/electron transmittability and the mutual shielding effect, an obvious positive correlation between rate capability and stability with 1T-MoS2 content was established. The optimized 1T-MoS2/NiS2 nanosheets (NMS-2) with 1T phase purity of up to 67.6% in MoS2 demonstrated exceptional specific capacity (579.4 C g−1 at 1 A g−1) and impressive rate capability (345.0 C g−1 at 30 A g−1), which suggests much faster kinetics compared to pure NiS2. Notably, the hybrid supercapacitor (HSC) assembled with NMS-2 as the cathode and activated carbon as the anode (NMS-2//AC HSC) exhibited a maximum specific capacitance of 137.4 F g−1 at 1 A g−1. Furthermore, this HSC can deliver a high energy density of 45.9 Wh kg−1 at 774.9 W kg−1, and could retain 17.7 Wh kg−1 even at a high power density of 7731.7 W kg−1. After 5000 cycles at a high current density of 5 A g−1, the HSC still remained 93.23% of its initial capacitance with an extremely low fading rate of 0.0014% per cycle.

Constructing MoS2-based cathode materials for zinc ion batteries

Aqueous zinc-ion batteries have advantages of high safety, friendly environment, low cost, and can be applied to large-scale energy storage. To prepare high-performance cathode materials easily and quickly is still one of the development directions. Based on the principle that two-dimensional layered materials can be thinned layer-by-layer via mechanical force, the molybdenum disulfide (MoS2)-based cathodes are prepared by one-step ball milling. The shear force and shockwave generated during ball milling effectively promote the preparation of MoS2/V2O5 cathode materials. X-ray diffraction, Raman, and infrared tests confirm the presence of both MoS2 and V2O5 components in the prepared MoS2/V2O5. The presence of metallic phase 1T-MoS2 in the MoS2/V2O5 is confirmed by X-ray photoelectron spectroscopy and transmission electron microscopy. Via a charging conversion mechanism, the obtained MoO3/V2O5 cathode has a high capacity of 417.4 mAh g−1, good rate performance (83.6 mAh g−1 at 10 A g−1), high energy and power densities (83.6 Wh kg−1 at 10,032 W kg−1). This study provides a new idea for constructing two-dimensional material-based cathodes by ball milling.

Stabilizing and Activating Active Sites: 1T-MoS2 Supported Pd Single Atoms for Efficient Hydrogen Evolution Reaction.

Metallic 1T-MoS2 with high intrinsic electronic conductivity performs Pt-like catalytic activity for hydrogen evolution reaction (HER). However, obtaining pure 1T-MoS2 is challenging due to its high formation energy and metastable properties. Herein, an in situ SO4 2--anchoring strategy is reported to synthesize a thin layer of 1T-MoS2 loaded on commercial carbon. Single Pd atoms, constituting a substantial loading of 7.2wt%, are then immobilized on the 1T-phase MoS2 via Pd─S bonds to modulate the electronic structure and ensure a stable active phase. The resulting Pd1/1T-MoS2/C catalyst exhibits superior HER performance, featuring a low overpotential of 53mV at the current density of 10mAcm-2, a small Tafel slope of 37mVdec-1, and minimal charge transfer resistance in alkaline electrolyte. Moreover, the catalyst also demonstrates efficacy in acid and neutral electrolytes. Atomic structural characterization and theoretical calculations reveal that the high activity of Pd1/1T-MoS2/C is attributed to the near-zero hydrogen adsorption energy of the activated sulfur sites on the two adjacent shells of atomic Pd.

Large thermoelectric transport in magnetically coupled CrI3/1T-MoS2 vdW heterostructure via spin–charge interconversion

Low-dimensional materials with prominent thermoelectric (TE) effect play a pivotal role in realizing state-of-the-art nanoscale TE devices. The fusion of TE effect with the magnetism through seamless integration of TE and magnetic materials in the 2D limit offers access to control longitudinal as well as transverse TE properties via magnetic proximity effect. Herein, we design a van der Waals (vdW) heterostructure of metallic 1T-MoS2 with promising TE properties and a layer-dependent magnetic CrI3 material. The result highlights exotic electronic and magnetic configurations of the designed monolayer-CrI3/1T-MoS2 vdW heterostructure, which show magnetically-coupled TE characteristics. The observed remarkable magnetic proximity stems from large magnetic anisotropy energy and spin polarization, which are found to be 2.21 meV Cr−1 and 12.30%, respectively. To this end, the semiconducting CrI3 layer with intrinsic magnetism leads to efficient control and tunability of the observed spin-correlated anomalous Nernst effect. Moreover, a large dimensionless figure of merit of ∼6 and a power factor of ∼3.8×1011/τ∘ Wm−1K−2s−1 near the Fermi level at 300 K endorse the rejuvenated TE effect. The strong relativistic spin–orbit coupling validates the significant correlation of TE properties with intrinsic magnetic configuration. The present study underscores the significance of the magnetic proximity-governed TE effect in vdW heterostructures to engineer low-dimensional TE devices.

Sulphide induced highly selective electrocatalytic nitrobenzene reduction by Cu-doped 1T-MoS2

An electrocatalysis system with lower overpotential, higher Faradic efficiency and good product selectivity is highly desirable for the electroreduction of nitrobenzene (NB). Here, Metallic Cu-doped 1T-MoS2 with different Cu content were load onto a Ti mesh by using a one-step solvothermal method. The doping of Cu into 1T MoS2 can significantly enlarge the electrochemical surface area and decease the charge transfer resistance. Detailed electrochemical studies indicate the reduction of NB follows first-order kinetics with respect to NB and second-order regarding S2−. Thus, introduction of small amount of sulphide ions can significantly accelerate the reaction and further decrease the charge transfer resistance. As a result, 8 % Cu-MoS2 attains 97 % selectivity towards aniline with 76 % Faradaic efficiency (FE). Besides, 8 % Cu-MoS2 demonstrates good stability and retains its 92 % selectivity of aniline after 5 cycles. This work provides valuable insights into organic transformations using the tuned electronic structure of 1T-MoS2 via doping strategy.

Structural and optical properties of 1T-MoS2/MoO3 thin films prepared by spray pyrolysis method

Electrical properties of the devices based on two dimensional (2D) transition metal dichalcogenids thin films, is highly depended to their producing method and preparation conditions. In the present work structural and optical properties of MoS2/MoO3 nano-heterostructure films prepared by spray pyrolysis technique were studied. X-ray diffraction analysis revealed a phase transformation from hexagonal semiconducting 2H–MoS2 to octahedral metallic 1T-MoS2 phase by decreasing the molarity of ammonium molybdate as the precursor solution. The controllable phase transition provides a degree of freedom to pave the way for more novel devices. UV–Vis absorption spectra and photoluminescence (PL) spectroscopy confirm the presence of monolayer MoS2 with a direct band gap of ∼1.84 eV, related to a peak position at 674 nm in the composite. A change in the sample's band gap by annealing treatment on the hybrid films is, here reported. We found three different band gap of 1.7, 2.1 and 2.25 eV for the three composite samples and discussed the case. The highest PL quantum yield (QY) of the 1T-MoS2 based composite make it as a better candidate for photocatalysis applications. A brief discussion of the Raman spectra analysis from a prepared MoS2/MoO3 sample is also included. The present work illustrates the potential use of composite based heterostructures in electrical devises where higher conductivity of the metallic phase of MoS2 nanostructures is needed.

Metallic 1T-MoS2/ZnIn2S4 heterojunction photocatalysts for enhanced photoredox reaction via guiding charge migration

Metallic 1T-MoS2/ZnIn2S4 heterojunction photocatalysts for enhanced photoredox reaction via guiding charge migration

Flash phase engineering of MoS2 nanofilms for enhanced photoelectrochemical performance.

A heterophase structure combining semiconducting 2H- and metallic 1T-MoS2 exhibits significantly enhanced photoelectrochemical performance due to the electrical coupling and synergistic effect between the phases. Therefore, site-selective effective phase engineering is crucial for the fabrication of MoS2-based photoelectrochemical devices. Here, we employed a flash phase engineering (FPE) strategy to precisely fabricate a 2H-1T heterophase structure. This technique allows simple, efficient, and precise control over the micropatterning of MoS2 nanofilms while enabling site-selective phase transition from the 1T to the 2H phase. The detection of reduced glutathione (GSH) showed an approximately 5-fold increase in sensitivity when using the electrode fabricated by FPE.

Fabrication of NiSx/MoS2 interface for accelerated charge transfer with greatly improved electrocatalytic activity in nitrogen reduction to produce ammonia

Electrocatalytic reduction of dinitrogen to produce ammonia at ambient conditions has increasingly attracted attentions. Molybdenum sulfide (MoS2) exhibits promises in electrocatalysis. However, the lack of reactive sites significantly limited the electrocatalytic activity of MoS2 when applied in the reduction of N2 to produce ammonia. Herein, we successfully prepared a NiSx/MoS2 heterostructural composite with abundant interfaces exposed. Moreover, the presence of metallic phase 1T-MoS2 provided better conductivity and more active sites. Benefited from this interface design, as-prepared NiSx/MoS2 composites exhibited excellent electrocatalytic activity in reduction of N2. The ammonia yield rate reached as high as 68.78 µg h−1 mg−1cat. at −0.60 V (vs. RHE) with a Faradic efficiency of 48.53 % at −0.50 V (vs. RHE), as well as charming selectivity and long-term stability. The density functional theory (DFT) calculation results indicated that the heterointerface formed between NiSx/MoS2 composites facilitated electrons transfer. And the adsorption of N2 on the Mo site is more stable, which synergistically improves the NRR performance. This work provides new evidences of constructing heterojunction materials to accelerate electron transfer between interfaces for highly efficient electrocatalytic nitrogen reduction.

Metallic 1T phase molybdenum disulfide cocatalyst with abundant edge and substrate active sites for enhanced photocatalytic hydrogen production activity of zinc indium sulfide nanoflowers

The formation of composites by loading co-catalysts on semiconductor photocatalysts to improve hydrogen (H2) evolution performance is a feasible strategy. Metallic 1T phase molybdenum disulfide (MoS2) as cocatalysts were decorated on zinc indium sulfide (ZnIn2S4) nanoflowers by a grinding method to construct 1T-MoS2@ZnIn2S4 composites. The H2 production rate of 1T-MoS2@ZnIn2S4 composites with optimum 7 wt% 1T-MoS2 loading achieves 15.6 mmol g−1 h−1, 5.5 times higher than ZnIn2S4 nanoflowers. The apparent quantum efficiency (AQY) increases from 3.1 % (ZnIn2S4 nanoflowers) to 13.0 % (1T-MoS2@ZnIn2S4 composites) under the wavelength light irradiation at λ = 370 nm. The loading of metallic 1T-MoS2 with abundant edge and substrate active sites on ZnIn2S4 can enhance visible light absorption, promote the transfer of electrons, and inhibit carrier recombination, thereby improving photocatalytic performance. This work offers inspiration for the design of composite photocatalysts with efficient photocatalytic capabilities.

Defect-engineered composite with ammonium vanadate and 1T-MoS2 for superior aqueous zinc-ion battery applications

Aqueous zinc-ion batteries (AZIBs) are competitive energy-storage systems owing to their high ionic conductivity, safety, low cost, and eco-friendliness. Vanadium-based oxides have gained research interest as cathode materials for AZIBs because of their high capacities derived from their multivalent states and layered structures. However, vanadium-based oxides continue to exhibit poor performance as electrodes owing to critical issues, such as structural collapse, cation trapping, and poor electrical conductivity, which limit their practical application. Defect-engineered composite cathode materials consisting of (NH4)2V6O16·1.5H2O (NVO) nanorods and metallic 1T-MoS2 nanosheets were fabricated using a sonochemical method. NH4+ and H2O were co-intercalated into the NVO interlayer and served as pillars for stabilizing the layered structure. The 1T-MoS2 nanosheets promote fast charge transfer by providing conductive networks to the NVO. Furthermore, the oxygen defects in the NVO lattice weaken the electrostatic attraction between the inserted Zn2+ cations and the lattice oxygen layers, facilitating reversible Zn2+ (de)intercalation during charging–discharging. Consequently, the Od-NVO/Oi-MoS2 electrode exhibited a high capacity of 370.5 mAh/g at a current density of 0.2 A/g. In addition, it exhibited a high capacity of 141 mAh/g and maintained 92.5% of its initial capacity after 2000 cycles at 10 A/g.

Pd Sulfidation‐Induced 1T‐Phase Tuning in Monolayer MoS2 for Hydrogen Evolution Reaction (Adv. Energy Mater. 23/2023)

Hydrogen Evolution Reaction In article number 2300183, Cheol-Min Park, Ki-Joon Jeon, and co-workers discover the sulfidation of Pd-based nanoclusters on monolayer MoS2 as a two-birds-with-one-stone strategy for tuning the metallic 1T-MoS2 phase and promoting the hydrogen production of a heterogeneous catalyst. The cover visualizes the 1T-phase enrichment in close proximity to the PdxSy nanoclusters that function as electrocatalytic active sites for the hydrogen evolution reaction.

1T-MoS2 grown on amorphous carbon-coated carbon nanotubes for high-performance lithium-sulfur batteries

Since lithium-sulfur batteries (LSBs) own large energy density, low cost, and environmental friendliness, they are recognized as the most up-and-coming energy storage devices. However, the low conductivity of sulfur and the shuttle effect of intermediate lithium polysulfides (LiPSs) greatly cause capacity decline. Herein, we synthesize a one-dimensional nanocomposite, in which metallic 1T-MoS2 with a large layer spacing is grown onto the amorphous carbon-coated carbon nanotubes (CNTs@C) via a facile solvothermal method, which is named as CNTs@C@1T-MoS2. The powerful interaction between the polar 1T-MoS2 and LiPSs severely weakens the shuttling effect. The CNTs@C@1T-MoS2 combines high catalytic activity of the 1T-MoS2 with high electronic conductivity of the CNTs, resulting in faster reaction kinetics. Therefore, lithium-sulfur battery assembled with CNTs@C@1T-MoS2-modified separator exhibits an initial discharge capacity of 1373 mAh/g at 0.2 C, and delivers a discharge capacity of 691 mAh/g after 400 cycles at 1 C. This work provides a simple method to obtain multi-functional separators for high-performance LSBs, and this method can also be applied to other rechargeable battery systems, such as Na/S, Mg/S, K/S, Al/S, Zn/S, and Li/Se batteries.

TinO2n-1/MXene Hierarchical Bifunctional Catalyst Anchored on Graphene Aerogel toward Flexible and High-Energy Li-S Batteries.

The development of lithium-sulfur (Li-S) batteries with high-energy density, flexibility, and safety is very appealing for emerging implantable devices, biomonitoring, and roll-up displays. Nevertheless, the poor cycling stability and flexibility of the existing sulfur cathodes, flammable liquid electrolytes, and extremely reactive lithium anodes raise serious battery performance degradation and safety issues. Herein, a metallic 1T MoS2 and rich oxygen vacancies TinO2n-1/MXene hierarchical bifunctional catalyst (Mo-Ti/Mx) anchored on a reduced graphene oxide-cellulose nanofiber (GN) host (Mo-Ti/Mx-GN) was proposed to address the above challenges. By applying a directional freezing process, the hierarchical architecture of a flexible GN scaffold composed of waved multiarch morphology with long-range alignment is achieved. The synergetic effects of 1T MoS2 and TinO2n-1/MXene are beneficial to suppress the shuttling behavior of lithium polysulfides (LiPSs), expedite the redox kinetics of sulfur species, and promote the electrocatalytic reduction of LiPSs to Li2S. The electrode demonstrates improved electrochemical properties with high sulfur-mass loading (8.4 mgs cm-2) and lean electrolyte (7.6 μL mgs-1) operation. We also explored the feasibility of producing pouch cells with such flexible electrodes, gel polymer electrolytes, and a robust lithium anode, which exhibited reversible energy storage and output, wide temperature adaptability, and good safety against rigorous strikes, implying the potential for practical applications.

Co-Ion Desorption as the Main Charging Mechanism in Metallic 1T-MoS2 Supercapacitors.

Metallic 1T-MoS2 is a promising electrode material for supercapacitor applications. Its layered structure allows the efficient intercalation of ions, leading to experimental volumetric capacitance as high as 140 F/cm3. Molecular dynamics could in principle be used to characterize its charging mechanism; however, unlike conventional nanoporous carbon, 1T-MoS2 is a multicomponent electrode. The Mo and S atoms have very different electronegativities so that 1T-MoS2 cannot be simulated accurately using the conventional constant potential method. In this work, we show that controlling the electrochemical potential of the atoms allows one to recover average partial charges for the elements in agreement with electronic structure calculations for the material at rest, without compromising the ability to simulate systems under an applied voltage. The simulations yield volumetric capacitances in agreement with experiments. We show that due to the large electronegativity of S, the co-ion desorption is the main charging mechanism at play during the charging process. This contrasts drastically with carbon materials for which ion exchange and counterion adsorption usually dominate. In the future, our method can be extended to the study of a wide range of families of 2D layered materials such as MXenes.

High-Performance All-Solid-State Li-S Batteries Enabled by Reaction Kinetics Enhancement and Interface Stabilization

Compared to the conventional lithium-sulfur (Li-S) batteries using liquid electrolytes, all-solid-state lithium-sulfur batteries (ASSLSBs) own the merits of eliminating polysulfide shuttle effects, potentially higher energy density, and superior safety. However, there are challenges of low utilization of sulfur caused by poor ion and electron conductions in the cathode, huge interfacial resistance due to the contact loss caused by huge volume change of sulfur during cycling, and sluggish reaction kinetics and higher thermodynamic barriers because of the one-step reaction from S8 to Li2S reactions. Also, the carbon additive could accelerate the decomposition of sulfide solid-state electrolyte (SSE) resulting newborn impedance. Therefore, it is significant to interface engineering the carbon additive through surface modification and functionalization to improve the electrochemical stability, charge transfer, and reaction kinetics in ASSLSBs.Herein, for the first time, we designed a highly conductive carbon fiber decorated with vertically grown MoS2 nanosheets and applied it in ASSLSBs. The chemical and electrochemical compatibility among MoS2, sulfur, and sulfide SSE can greatly improve the stability of the cathode and therefore maintain pristine interfaces between the different compositions for stable ion and electron transport. The presence of electrical-conductive metallic 1T MoS2 and its uniform distribution on carbon fiber without aggregation benefit the electron transfer between carbon and sulfur. Meanwhile, the unique layered structure of MoS2 can be intercalated by a large amount of Li atoms and therefore facilitate both ionic and electronic conductivity. In consequence, the charge transfer and reaction kinetics were greatly enhanced, and the decomposition of SSEs was successfully relieved. As a result, our ASSLSB delivered an ultrahigh initial discharge capacity of 1456 mAh g-1 with ultrahigh initial coulombic efficiency and maintained high-capacity retention of 78 % at 0.1 C after 220 cycles. The batteries also obtained remarkable rate performance of 1069 mAh g-1 at 1 C. This study pioneered new idea that fabricating the high performance ASSLSBs through developing surface functionalized and stabilized conductive carbon additives with metal sulfides.

Double-phase 1T/2H–MoS2 heterostructure loaded in N-doped carbon/CNT complex carbon for efficient and rapid lithium storage

MoS2 has been considered as a potential anode for lithium-ion batteries. Most of the lab-prepared MoS2 anode materials are 2H phase with low intrinsic conductivity. To compensate the intrinsic low conductivity of 2H–MoS2 and its structural instability in cycles, a N-doped carbon-carbon nanotube (NC-CNT) carbon complex is prepared as the basic structure for MoS2 growth, and a 1T/2H–MoS2 heterostructure is fabricated on this structure. On one hand, CNTs create additional pores and connect isolated sheets of the NC, which provides enough inner growth space for MoS2 and maintains the overall electrical conductivity. On the other hand, the double-phase 1T/2H–MoS2 with high content (60%) of the metallic 1T-MoS2 gives a larger layer spacing, higher internal electron conductivity, and more active lithiation and de-lithiation reactions. To serve as anode for lithium-ion batteries, the synthesized 1T/2H–MoS2@NC–CNT has a reversible capacity of 764.99 mAh g−1 at 200 mA g−1 and an high-rate capacity of 547.7 mAh g−1 at 1000 mA g−1 even after 1000 cycles. By studying the reaction kinetics, impedance and lithiation/delithiation mechanism during electrochemical reactions, it is concluded that 1T/2H–MoS2@NC–CNT obtains declined charge transfer resistance, accelerated diffusion of Li+, improved cyclic stability, and enhanced structure/property reversibility from the carbon complex and the high-content 1T phase MoS2.

Molecularly imprinted sensor based on 1T/2H MoS2 and MWCNTs for voltammetric detection of acetaminophen

1T phase molybdenum disulfide (MoS2) possesses excellent electrical conductivity, 107 times higher than that of 2H phase MoS2. Thus, metallic 1T MoS2 is highly desirable for electrochemical analysis and catalysis. In this study, hybrid 1T/2H MoS2/multi-walled carbon nanotubes (MoS2/MWCNTs) composite was prepared by a facile and simple hydrothermal approach. Powder X-ray diffraction, field emission scanning and transmission electron microscopes, Fourier transform infrared spectroscopy, Raman spectroscopy, cyclic voltammetry (CV), and electrochemical impedance spectroscopy were used to characterize the composites. The results show that metallic 1T phase MoS2 was formed by the inductive effect of MWCNTs. The high conductivity and large specific surface area of hybrid 1T/2H MoS2/MWCNTs composite endow great catalysis activity in electrochemical analysis. Polypyrrole molecularly imprinted polymer (MIP) film imprinted with acetaminophen (AP) template was electrochemically deposited on glassy carbon electrode (GCE) modified by 1T/2H MoS2/MWCNTs (MoS2/CNTs/GCE) to construct MIP based sensor. The prepared MIP/MoS2/CNTs/GCE sensor shows a sensitive current response towards AP. Through the optimization of the ratio of monomer and template, CV electropolymerization cycles, CV elution cycles, incubation time, and pH, the accessible linear range of 0.01–300 μM was obtained with the limit of detection of 0.003 μM (S/N = 3) by differential pulse voltammetry. In addition, the prepared sensor shows great detecting robustness with excellent selectivity, anti-interference property, reproducibility, and stability. In the urine sample tests, the sensor shows desirable reliability with the recovery rate of 88.1–95.9%.