ACS Nano
·
2025
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IF 16
Jing Qin,Xiujuan Wang,Heyang Li,Fangxiang Wang,Ling Chen,Hongya Miao,Fangfang Xing,Shupei Yuan,Ziqi Ye,Xifei Li,Xiaoming He
Transition metal chalcogenides (TMCs) have garnered significant attention as high-capacity anode materials, yet the unconventional role of the Cu collector meditating atomic-level substitution of metal-site cations by Cu4+ ions during electrochemical cycling remains mechanistically unclear. To address this, herein, Cu-doped MoSe2@C ultrathin nanosheets were synthesized via the solvothermal process and carbonization strategies. A systematic investigation was conducted to elucidate the underlying driving forces for Cu4+ substitution at Mo4+ sites and the crucial regulatory effects of solid electrolyte interphase (SEI) formation. The substitution mechanism was elucidated through the Hard and Soft Acid–Base principle, where Cu4+ (classified as a soft acid) demonstrates significantly stronger coordination affinity with Se2– anions (soft bases) compared to the native Mo4+ cations (hard acids). This electrochemical transition is mediated by ether-based electrolytes coupled with the Cu collector, where the in situ formation of a thin, inorganic-rich SEI layer establishes synergistic ion-transport highways for accelerated Na+/Cu4+ co-diffusion. Temperature-dependent studies reveal Arrhenius-type kinetics: charge transfer is kinetically hindered at ≤ 0 °C but thermally activated at 50–70 °C, confirming that interfacial charge transfer requires thermal energy to overcome activation barriers. This work provides a fundamental guideline for designing stable metal chalcogenide electrodes through interface engineering and electrolyte optimization.
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PubMed
高影响因子
APPLIED SURFACE SCIENCE
·
2020
·
IF 6.182
Yu You,Mengli Wei,Likun Yang,Jingwen Wang,Yongxing Zhang,Jun Xu
The practical applications of high-performance lithium-sulfur batteries are severely hindered by the insulating nature of sulfur and intractable shuttling of the polysulfide intermediates. In this work, we report a novel MoSe 2 @rGO cathode coating consisting of two-dimensional MoSe 2 and reduced graphene oxide (rGO) as a multifunctional barrier to suppress polysulfide shuttling. Few-layered MoSe 2 nanosheets are in situ grown on the rGO surface by basal plane contact. Besides, some cotton-like MoSe 2 nanospheres assembled from porous nanosheets are decorated on the surface of rGO nanosheets. Benefitted from the strong chemical adsorption of polar MoSe 2 and excellent electrical conductivity of rGO, the MoSe 2 @rGO coatings exhibit highly efficient polysulfide anchoring and significantly enhanced electrocatalytic chemistry. Moreover, the MoSe 2 @rGO cathode coatings are much superior to its separator coatings in the recycling of the adsorbed active materials because of good interfacial conductivities. The cell with the MoSe 2 @rGO cathode coating delivers a high reversible capacity up to 1216 mAh g −1 at 0.2 C and outstanding cycling stability with a low capacity fading rate of 0.03% at 1 C over 1000 cycles.
研究领域:
材料科学
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电化学
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能源存储
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纳米材料
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电池技术
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DOI
高影响因子
NANOTECHNOLOGY
·
2019
·Vol. 30
·期 45
·455601
·
IF 3.399
Xiaoshuang Chen,Xiangfeng Guo,Lihua Jia,Xin Wang,Kun Song,Chunling Zuo,Rui Yang,Jinping Wang
Optimizing of electrocatalytic hydrogen evolution reaction (HER) activity is still a gigantic challenge for improving catalysts in renewable energy field. In this research, large-scale neoteric three-dimensional (3D) hierarchical MoSe2 hollow sphere arrays with like-Pacific Plate architecture were triumphantly prepared via a facile and reliable approach. The like-Pacific Plate architecture consists of many 3D MoSe2 arrays plates with the dimensions of 10–35 μm, which is assembled by plentiful closely connecting hierarchical MoSe2 hollow spheres with the outer diameter, hierarchically secondary unit size and shell thickness of 450 nm, 25 nm and 10 nm, respectively. The products exhibited remarkable HER performance with small Tafel slope (58.5 mV dec−1), low overpotential (169.8 mV) at 10 mA cm−2, high conductivity and durable stability, which are attribute to the mechanisms (1) 3D hollow framework furnishes large specific surface area, (2) hierarchical structure generates more active sites, (3) like-Pacific Plate architecture facilitates the touch of electrolyte and catalyst, and (4) closely packed arrays expedite the migration of electron. The current work indicates that unique 3D hierarchical hollow sphere arrays with like-Pacific Plate architecture will be a potential candidate for effective electrocatalytic water splitting catalyst material with energy source application.
研究领域:
材料科学
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可再生能源
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电化学
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PubMed
高影响因子
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
·
2016
·
IF 3.205
Yahui Song,Shengnan Wei,Yang Rong,Chunxiao Lu,Yang Chen,Jun Wang,Zhaohong Zhang
Several conduction band co-catalysts (CBCOs), MoO 2 , MoS 2 and MoSe 2 , were prepared to improve the visible-light photocatalytic hydrogen evolution activity of Er 3+ :Y 3 Al 5 O 12 /PdS–ZnS from water splitting, in which the PdS is a valence band co-catalyst (VBCO) used to facilitate the photo-generated hole transfer and the Er 3+ :Y 3 Al 5 O 12 is an up-conversion luminescence agent from visible light to ultraviolet light used to provide the ultraviolet light satisfying the energy demands of wide band-gap ZnS photocatalyst . XRD , SEM, TEM and EDX analyses were employed to confirm the morphology, microstructure and composition of the prepared photocatalysts. UV–vis absorption and PL spectra were also determined to explore luminescence effect of the Er 3+ :Y 3 Al 5 O 12 . The visible-light photocatalytic hydrogen evolution activity of the prepared photocatalysts was evaluated by using Na 2 S and Na 2 SO 3 as sacrificial reagents in aqueous solution under visible light irradiation . The influential factors such as contents of CBCOs (MoO 2 , MoS 2 and MoSe 2 ) and visible-light irradiation time on visible-light photocatalytic hydrogen evolution of Er 3+ :Y 3 Al 5 O 12 /PdS–ZnS–MoX 2 (X = O, S and Se) were investigated in detail. Particularly, Er 3+ :Y 3 Al 5 O 12 /PdS–ZnS–MoSe 2 with 0.30 wt% MoSe 2 shows the highest photocatalytic hydrogen evolution activity.
研究领域:
材料科学
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能源化学
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高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
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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
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催化化学
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能源科学
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PubMed
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
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2021
·
IF 5.316
Yi Wang,Xinyan Xiao,Mingli Lu,Yu Xiao
The transition-metal dichalcogenides (TMDs) is a promising photocatalyst for degrading contaminant, while limited active sites and poor carrier mobility are the primary challenges for improving photocatalytic degrading efficiencies in both bare TMDs and TMDs-based photocatalysts. A rGO-MoSe 2 composite with 3D network hierarchical structure was fabricated by the GO-assisted solvothermal method. And then rGO-MoSe 2 /g-C 3 N 4 3D/2D hierarchical structures were constructed by combining rGO-MoSe 2 with g-C 3 N 4 nanosheets . The optimal rGO-MoSe 2 /g-C 3 N 4 composite exhibited the highest photocatalytic degrading rate of 97.4% towards RhB under simulated solar light, and its pseudo-first-order apparent rate constant ( k ) was 0.0715 min −1 , being 5.9 and 12.5-folds higher than that of MoSe 2 /g-C 3 N 4 (0.0121 min −1 ) and bare g-C 3 N 4 (0.00573 min −1 ), respectively. The 3D/2D hierarchical structure endow rGO-MoSe 2 /g-C 3 N 4 composite with the improved light-harvesting and abundant active sites, supported by the DRS and BET analyses. And rGO nanosheets could act as efficient transfer and separation channels for electron-hole pairs between MoSe 2 and g-C 3 N 4 , confirmed through the photocurrent response and EIS tests. According to the results of DRS spectra and Mott-Schottky plots, the spatial behavior of photo-induced carriers at interface of rGO-MoSe 2 /g-C 3 N 4 would comply to a Z-scheme transfer pathway under the synergy effects of the internal electric field and band bending.
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
Nano Energy
·
2022
·
IF 19.069
Sin-Yi Pang,Weng-Fu Io,Lok-Wing Wong,Jiong Zhao,Jianhua Hao
Crystal phase modulations in two-dimensional (2D) materials have garnered extensive interest because of their intriguing features and potential applications. Nonetheless, synthesizing some specific phases of metastable transition metal dichalcogenides (TMDs) remains a challenge due to the restricted selectivity under chemical and physical treatments, especially for direct growth of specific phase of TMDs on 2D substrates to form heterostructures . Taking the merits of MXene with tunable atomic vacancies and surface chemistry via surface functionalization , the phase of epitaxially grown TMDs on 2D MXene can be significantly affected. In this work, 1 T′-MoS 2 and 1 T-MoSe 2 were directly grown on electrochemically synthesized MXene under controlled oxidization conditions and selected MXene substrate. Owing to the synergistic effect of TMDs and MXene, the TMDs/MXene heterostructure catalysts exhibit good electrochemical activity under acidic conditions, with a low overpotential of 167 mV at a current density of 10 mA cm −2 . Our work not only demonstrates the distinct chemical characteristic of various MXenes feasible for surface engineering which promotes the direct and in situ growth of phase controlled TMDs on MXene substrates but also displays the high electrochemical activity in TMDs/MXene heterostructure catalysts.
研究领域:
材料科学
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电化学
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DOI
高影响因子
APPLIED CATALYSIS B-ENVIRONMENTAL
·
2021
·
IF 19.503
Chencheng Dong,Zhiqiang Wang,Zhichao Ye,Juhua He,Zexiao Zheng,Xueqing Gong,Jinlong Zhang,Irene M.C. Lo
In recent years, molybdenum disulfides (MoS 2 ) have been widely recognized as a promising catalyst or cocatalyst in Advanced Oxidation Processes (AOPs); however, the discharge of hydrogen sulfide (H 2 S) after catalytic process is still a key issue that needs to be addressed. Hence, in this study, a superoxide radical (O 2 − ) dominated visible-light-driven peroxymonosulfate activation process has been established by adopting molybdenum selenide (MoSe 2 ) to replace MoS 2 in order to dramatically enhance the catalytic degradation efficiency of three types of pharmaceuticals and personal care products (PPCPs) (e.g., ibuprofen, benzophenone-3 and carbamazepine). This enhancement is due to its exposed surface metallic Mo 4+ ions, accompanied with the oxidization to Mo 5+ and Mo 6+ for further participating in the decomposing of PMS, as well as the photo-generated electrons playing a prominent role in reducing the Mo 5+ and Mo 6+ back to Mo 4+ . Scavenger tests and electron paramagnetic resonance (EPR) identify the O 2 − as the primary reactive oxygen species (ROS) in the MoSe 2 /PMS system, and singlet oxygen ( 1 O 2 ) is mainly derived from the transformation of O 2 − . Density Functional Theory (DFT) is used to explain the elongation of O O bond in the PMS molecule that would facilitate the generation of sulfate radicals and hydroxyl radicals in both of MoSe 2 catalyzed PMS system and cocatalyzed Fe(II) or Fe(III)/PMS systems. Ultimately, the MoSe 2 /PMS system is also applicable for the treatment of actual sewage. This work highlights the important role of photo-generated electrons and molybdenum ions in PMS reduction and oxidation , and establishes theoretical support for further relevant studies.
研究领域:
环境科学
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催化
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水处理
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材料科学
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化学工程
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DOI
高影响因子
MICROCHEMICAL JOURNAL
·
2026
·
IF 5.2
Bofei Zhang,Ke Zhao,Baozhong Zhang,Boxu Chen,Kunfeng Zhang,Hanyu Chen,Baoshan He
A dual-mode (colorimetric/electrochemical) aptasensor was developed for ZEN detection. • Au@Ti 3 C 2 T x MXene@MoSe 2 was synthesized to enhance electrode conductivity and surface area. • RCA was integrated to generate G-quadruplexes for both electrochemical and colorimetric readouts. • Electrochemical mode achieved 1.23 fg/mL LOD; colorimetric mode enabled convenient visual screening. • The sensor exhibited excellent selectivity, stability, and recoveries (89.6–106.2%) in real samples. Zearalenone (ZEN), a nonsteroidal mycotoxin produced by Fusarium fungi, widely contaminates cereals and their derived products, posing a serious threat to human health. In this study, a highly sensitive dual-mode (colorimetric and electrochemical) aptasensor for ZEN was constructed. The sensor employs rolling circle amplification (RCA) to efficiently generate long single-stranded DNA rich in G-quadruplex sequences, combined with an electrode modified with an Au@Ti 3 C 2 T x MXene@MoSe 2 nanocomposite, thereby achieving synergistic signal amplification and dual readout. In the electrochemical mode, the RCA product is anchored through hybridization between the primer and the capture probe on the electrode surface, where it adsorbs abundant methylene blue to produce a square wave voltammetry (SWV) response. In the colorimetric mode, the G-quadruplex structures self-assemble with hemin to form peroxidase-mimicking DNAzymes, which catalyze the TMB chromogenic reaction to generate a visual signal. Experimental results showed that the electrochemical mode achieved a detection limit as low as 1.23 fg/mL (detection range: 10 −3 -10 4 pg/mL), while the colorimetric mode exhibited a detection limit of 64.89 fg/mL (detection range: 1 pM-10 μM). The aptasensor demonstrated excellent selectivity, good stability, and satisfactory reproducibility for ZEN, with spiked recoveries ranging from 89.6% to 106.2% in real corn flour and beer samples. This dual-mode sensing platform effectively eliminates single-mode interferences through signal cross-validation, providing a reliable technical means for the accurate and rapid detection of trace ZEN in food safety. Download: Download high-res image (117KB) Download: Download full-size image
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高影响因子
CHEMOSPHERE
·
2021
·
IF 7.086
Liangmei Rao,Xinyu Lu,Lulu Xu,Yifu Zhu,Ting Xue,Yu Ge,Zhongshu Duan,Xuemin Duan,Yangping Wen,Jingkun Xu
It is an urgent need to exploit a potentially green, cost efficient and eco-friendly strategy for the utilization of waste kudzu vine. We developed a one-step green preparation of kudzu vine biochar (BC) decorated graphene-like molybdenum selenide (MoSe 2 ) with the oxidase-like activity as intelligent nanozyme sensing platform for voltametric detection of hesperetin (HP) in orange peel using the in-situ hydrothermal synthesis method. The structure and properties of MoSe 2 -BC was characterized, and found that BC significantly improved electrochemical cycle stability, electronic conductivity, electrochemical active area, and electrocatalytic activity of MoSe 2 . The oxidase-like activity of MoSe 2 -BC was confirmed by the oxidization of the colorless substrate 3,3′,5,5′-tetramethylbenzidine (TMB) to form blue products and the change of absorbance intensity of UV–vis absorption spectra . The MoSe 2 -BC exhibited excellent electrochemical sensing performance for the detection of HP in wide linear ranges from 10 nM to 9.5 μM with a low limit of detection of 2 nM using differential pulse voltammetric method. An emerging machine learning technique is used to realize the intelligent sensing of HP, and the performance evaluation of regression analysis was selected to evaluate this technique. This work will provide a guidance for the preparation and application of biochar decorated graphene-like nanomaterials with the oxidase-like activity and the development of intelligent nanozyme sensing platform.
研究领域:
材料科学
·
环境科学
·
分析化学
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DOI
PubMed
高影响因子
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
·
2020
·Vol. 167
·期 2
·027547
·
IF 3.721
Shuan Zhang,Yueyun Li,Chunyan Zhang,Yilei Jia,Ping Wang,Yunhui Dong,Xinjin Li,Qing Liu,Zengdian Zhao
Herein, urchin-like gold@platinum dendritic nanoparticles supported on molybdenum selenide@molybdenum disulfide (Au@Pt DNPs/MoSe2@MoS2) nanocomposite with multiple signal amplification capabilities was successfully synthesized as the matrix platform of label-free amperometric immunosensor for the quantitative detection of squamous cell carcinoma antigen (SCCA). Au@Pt DNPs/MoSe2@MoS2 consists of Au@Pt DNPs with splendid biocompatibility as well as catalysis and MoSe2@MoS2 with reformative peroxidase activity, which owned enhanced electrocatalysis toward hydrogen peroxide reduction and steady bioconjugation for bioprotein immobilization. Additionally, Au@Pt DNPs/MoSe2@MoS2 possessed satisfactory conductivity to accelerate electron transfer at the electrode interface. With the help of Au@Pt DNPs/MoSe2@MoS2, the immunosensor procured a good linear extent of SCCA detection between 100 fg ml−1 and 100 ng ml−1, reached a lower detection limit than previous reports. Moreover, the immunosensor with good stability and reproducibility achieved the specific detection of SCCA in the mixture containing interferents as well as in the real human serum sample, which testified to the proposed amperometric immunosensor was reliable in clinical detection of tumor biomarkers.
研究领域:
生物医学工程
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肿瘤学
·
材料科学
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DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2022
·
IF 7.392
Chengjie Li,Yingchao Zhang,Jinxiu Yuan,Jing Hu,Hairong Dong,Guofu Li,Di Chen,Yuning Li
MoSe 2 has recently attracted great interest in the development of high-performance potassium-ion batteries (PIBs) anode materials because of its high theoretical capacity. However, the practical application of MoSe 2 in PIBs is still hampered by its low conductivity and large volumetric expansion upon cycling. In this work, ultra-small few-layered MoSe 2 nanosheets are encapsulated in N-doped porous carbon nanofibers (N-PCNFs) by an electrospinning and in situ carbonization/selenization process to form MoSe 2 /N-PCNFs nanocomposites. The morphology of nanocrystalline MoSe 2 is fine-tuned to maximize the heterointerfaces of dichalcogenide/carbon matrix that function as active sites for potassium-ion storage. Benefitting from the effective confinement of MoSe 2 in the carbon matrix and the robust chemical bonds (C Se and C Mo) formed at the heterointerfaces, the structure stability and charge transfer kinetics of MoSe 2 /N-PCNFs are significantly improved. Moreover, the one-dimensional structure of N-PCNFs accelerates ions/electrons-transfer kinetics. The optimized MoSe 2 /N-PCNF with a moderate MoSe 2 content exhibits excellent electrochemical performance for PIBs. The electrochemical storage mechanism of MoSe 2 /N-PCNFs is investigated by in situ X-ray diffraction measurements. Density functional theory calculations verify the enhanced adsorption of potassium-ion and electron transport at the heterointerfaces. This work provides new insights into the design of MoSe 2 based anodes for high-performance PIBs and other advanced secondary batteries.
研究领域:
材料科学
·
能源存储与转换
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高影响因子
危险品化学品经营许可证（带存储）