LANGMUIR
·
2024
·
IF 3.7
Zhi Li,Minglong Sun,Yalin Li,Ziang Liu,Dongxiang Zhang,Yingmin Liu,Xinghui He,Mo-Jie Sun
Metal–organic frameworks (MOFs) are crystalline porous materials for storage and energy conversion applications with three-dimensional pore structure, high porosity, and specific surface area, which are widely utilized in electrocatalysis. Herein, MoSe2/NiSe composites were synthesized by selenization reaction using NiMOF as the precursor. The composites were hollow nanoflower structures with a synergistic effect between MoSe2 and NiSe to promote rapid electron transfer, which exhibited good hydrogen evolution reaction performance in an alkaline medium. At a current density of 10 mA/cm2, the HER overpotential reaches 80 mV, the Tafel slope is 33.86 mV/dec, and the material has good stability, with polarization curves remaining essentially unchanged after 3000 cycles. These results indicate that the method has a promising application in the preparation of efficient and sustainable catalysts for hydrogen production in alkaline medium.
研究领域:
材料科学
·
电催化
·
能源转换
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2021
·
IF 8.128
Qingqing Jiang,Lin Wang,Yan Wang,Meihua Qin,Rui Wu,Zhengxi Huang,Hai-Jian Yang,Yongxiu Li,Tengfei Zhou,Juncheng Hu
For potassium-ion battery (PIB), it remains a huge challenge to develop an appropriate anode material to compensate the large radius of K + . MoSe 2 shows great potential for efficient K + insertion/extraction due to its unique lamellar structures with an interlayer spacing of 6.46 Å. However, pure MoSe 2 has low electronic conductivity and agglomerates during long-term cycling. In the present work, MoSe 2 nanosheets were fabricated on the N -doped porous carbon polyhedron (NPCP). The obtained product was designated as NPCP@MoSe 2 and functioned as anode materials for PIBs. NPCP@MoSe 2 displayed a promising reversible capacity (325 mAh/g at 100 mA/g after 80 cycles), long-term cycling performance (128 mAh/g at 500 mA/g after 800 cycles), and superior rate property at 5000 mA/g. The enhanced electrochemical performance of NPCP@MoSe 2 could be attributed to the rational design of hybrid structures. Notably, the hollow NPCP provide a large contact area for the interactions among the electrolytes and electro-active materials as well as partly buffer the volume expansion. The synergistic effects between MoSe 2 and NPCP could mitigate the agglomeration of MoSe 2 nanosheets. Besides, the uniformly doping N elements enhanced the conductivity of the carbon matrix, and the N -group also provided potential binding active sites for K-ion accommodation. This work paves the ideas for the design of novel anode materials with high specific capacity, good cycling stability and outstanding rate capability for PIBs.
研究领域:
材料科学
·
电化学
✓ 已验证
DOI
PubMed
高影响因子
APPLIED CATALYSIS B-ENVIRONMENTAL
·
2020
·
IF 16.683
Ke Wang,Zipeng Xing,Du Meng,Shiyu Zhang,Zhenzi Li,Kai Pan,Wei Zhou
Inadequate separation of carriers is still major obstacles to the practical application of photocatalysis. The reasonable design of semiconductor photocatalysts is expected to break through this bottleneck. Herein, MoSe 2 @Bi 2 S 3 /CdS is designed by solvothermal-hydrothermal strategy. Thanks to the dual Z-Scheme heterojunction conforms to the characteristics of multi-channel charge transfer which favor the spatial separation of carriers. MoSe 2 @Bi 2 S 3 /CdS hollow structure increases the utilization rate of light source, the core-shell structure increases the interface area and the active sites. Moreover, full spectrum absorption endues MoSe 2 @Bi 2 S 3 /CdS with unpredictable photothermal effect, which can touch off near-field temperature rise to facilitate photocatalytic process. Profiting from the synergistic facilitation effect, MoSe 2 @Bi 2 S 3 /CdS exhibits excellent photocatalytic activity in the hydrogen evolution and pollutants removal of Cr (VI) and 2,4,6-trichlorophenol (TCP), which are up to 11.84 mmol/g/h, 98.7% and 99.2%, respectively. This dual functional MoSe 2 @Bi 2 S 3 /CdS photocatalyst may paves new opportunities for solving the energy crisis and environmental pollution.
研究领域:
材料科学
·
环境科学
·
能源科学
✓ 已验证
产品关联
DOI
高影响因子
Nanoscale
·
2015
·Vol. 8
·期 1
·440-450
·
IF 7.394
Yuxin Wu,Mingquan Xu,Xi Chen,Shuanglei Yang,Hanshuo Wu,Jun Pan,Xiang Xiong
A novel nanostructure of perpendicular ultrathin MoSe2 nanosheets directly grown on graphene was produced by a facile hydrothermal method in the presence of CTAB. The vertically-oriented and ultrathin MoSe2 nanosheets distribute uniformly on the surface of graphene, and the nanosheets are typically 2–3 layers, which is confirmed by TEM and red shift of the A1g Raman peak. In comparison with pure MoSe2 and MoSe2 nanospheres on graphene, vertically oriented MoSe2 nanosheets on graphene show enhanced organic dye adsorption ability and photocatalytic performance in the degradation of MB, RhB and MO under dark conditions and visible light irradiation. The excellent photocatalytic activity may be contributed by the unique perpendicular MoSe2 nanosheets with fully exposed active edges and hybridized with graphene for reduced electron–hole pair recombination.
研究领域:
材料科学
·
环境科学
·
化学
✓ 已验证
DOI
PubMed
高影响因子
Surfaces and Interfaces
·
2025
·
IF 6.3
Can Zhao,Nan Li,Shirui Zhang,Xinding Lv,ALabdulsalam Mohammed Nasser,Yue Li,Shuqian Sun,Jiangquan Ma
Water splitting to produce H 2 and oxygen reduction to synthesize H 2 O 2 have become an effective strategy to meet energy needs due to their sustainability. However, simultaneous production of H 2 O 2 and H 2 in a catalytic system is still challenging. Herein, we constructed a novel MoSe 2 /Bi 0.5 Na 0.5 TiO 3 (MS/BNT) Z-type heterojunction as a piezo-photocatalyst for hydrogen and hydrogen peroxide production. Under the condition of piezoelectric photocatalysis, the optimized 5% MS/BNT catalyst achieved significant double high activity: the hydrogen evolution (HER) rate was as high as 3365.94 μmol/g/h, and the H 2 O 2 yield was 2784.5 μmol/g/h, which was 28 times and 14.7 times that of pure BNT, respectively. This excellent bifunctional catalytic performance is due to the synergistic effect of Z-scheme heterojunction and piezoelectric field, which effectively promotes the spatial separation of electron-hole pairs, thus greatly improving the simultaneous generation efficiency of H 2 and H 2 O 2 . This study provides a key new idea for the design of piezoelectric photocatalysts that can efficiently and synergistically produce a variety of high-value products (such as H 2 and H 2 O 2 ).
研究领域:
能量转换
·
催化
·
材料科学
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2023
·
IF 6.2
Feng-bo Guo,Xin-ya Zhao,Yi-miao Yu,Jing Cheng,Kan-kan Liu,Li-xin Zhang
Hydrogen production by electrochemical water splitting is one of the best ways to store renewable energy. Metal organic framework (MOF)-derived non-precious metal catalysts are an effective idea for large-scale commercialization and electrolysis of water for hydrogen production. Herein, we have synthesized Ni,Mo bimetallic selenide MoSe 2 @NiSe 2 heterojunctions with hollow core-shell using a selenization reaction to combine MoSe 2 with NiMOF-derived NiSe 2 . The spherical clusters of MoSe 2 prevents the agglomeration and sintering of NiSe 2 and shorten the electron transfer distance form MoSe 2 to NiSe 2 . The electron flow between the transition metals Ni and Mo after the selenization reaction, which alters the electronic structure of NiMOF and MoSe 2 . NiSe 2 derived from NiMOF provides more active center as well as better conductivity to accelerate the electron transfer rate. Thus facilitating the HER catalytic process. Electrochemical analysis confirmed that the activity of Hydrogen evolution reaction (HER) of MoSe 2 @NiSe 2 was significantly increased in 0.5 M H 2 SO 4 , with an overpotential of 187 mV at 10 mA cm −2 and a tafel slope of 71.43 mV dec −1 . This work provides a new route for the design and preparation of the NiMOF-based catalysts in HER.
研究领域:
材料科学
·
电化学
·
可再生能源
✓ 已验证
产品关联
DOI
高影响因子
APPLIED CATALYSIS B-ENVIRONMENTAL
·
2023
·
IF 22.1
Xiaocheng Xu,Haijun Liao,Le Huang,Sijie Chen,Rui Wang,Sheng Wu,Yanxue Wu,Zhipeng Sun,Haitao Huang
The construction of cost-effective electrocatalysts with remarkable activity and durability for the urea oxidation reaction (UOR) is urgently needed to achieve sustainable hydrogen production . Herein, a three-dimensional (3D) nanostructure with uniform NiSe 2 /MoSe 2 Mott-Schottky heterojunction nanoneedle arrays densely grown on carbon cloth was designed and fabricated by a hydrothermal method followed by selenization treatment. In the UOR process, NiSe 2 /MoSe 2 undergoes surface reconstruction into a Mo-NiOOH/NiSe 2 composite structure, and Mo-doping can optimize the adsorption/desorption of UOR intermediates. In the hydrogen evolution reaction (HER) process, the directed electron transfer brought by the Mott-Schottky heterojunction can modulate the electronic structure and optimize the d-band center, thus promoting HER. The well-designed NiSe 2 /MoSe 2 as a bifunctional catalyst for urea-assisted electrolysis can reach 10 mA cm −2 at only 1.44 V with almost no performance degradation for 48 h. This work provides a promising avenue to develop efficient HER/UOR bifunctional catalysts toward urea-assisted water electrolysis.
研究领域:
材料科学
·
电催化
·
可再生能源
✓ 已验证
产品关联
DOI
高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2023
·Vol. 34
·期 2
·2308149
·
IF 19
Hongying Yang,Yunxia Hu,Xin Zhang,Yanan Ding,Shuai Wang,Zhen Su,Yong Shuai,PingAn Hu
Near-infrared (NIR) synaptic devices have attracted great attention in the field of NIR vision sensors due to their highly parallel sensing and memory functions, which emulate the basic biomimetic behaviors of the human visual system. However, it is a great challenge for the 2D material to achieve NIR light response and integration, which obstructs the progress of NIR synaptic devices. Hence, a two-terminal NIR synaptic device based on a multilayer MoSe 2 moiré superlattice is reported. The moiré structure dominated by interlayer excitons significantly enhances the interlayer coupling of multilayer MoSe 2 , resulting in a narrower band gap nearly to that of bulk to achieve NIR light response and broadband absorption from 240 nm to 1700 nm. The existence of Se vacancies in MoSe 2 moiré superlattice makes the device show the fundamental synaptic performance. Furthermore, a 10×10 integrated retinal morphologic device array is constructed. Under the 100 s light pulse stimulation of 1060 nm, the pattern obtained after attenuation of 50 s still has a memory level of 14.84%, reflecting the excellent storage function under NIR illumination. This research opens up a new avenue for the realization of NIR artificial retina and bionic eye based on 2D materials.
研究领域:
生物医学工程
·
神经仿生学
·
纳米医学
·
视觉假体
·
分子电子学
·
光生物学
·
材料科学
✓ 已验证
DOI
高影响因子
BIOELECTROCHEMISTRY
·
2023
·
IF 5
Jianhua Yan,Kaidi Wang,Hongjie Liu,Liwei Wang,Yixiang Li,Guoqing Zhang,Li Deng
MiRNA-155 is a typical biomarker for breast cancer. Since its low concentration in the physiological environment and the limitations of conventional miRNA detection methods like Northern imprinting and RT-qPCR, convenient, real-time, and rapid detection methods are urgently needed. In this work, an electrochemical biosensor was constructed based on the flower-like MoSe 2 @1T-MoS 2 heterojunction electrode material and specific RNA recognition probes, which can realize the rapid determination of miRNA-155 content with a wide detection range from 1 fM to 1 nM and a limit of detection (LOD) as low as 0.34 fM. Furthermore, the contents of miRNA-155 in blood samples of tumor-bearing mice and normal mice were measured as 724.93 pM and 21.42 pM, respectively by this biosensor, demonstrating its strong identification ability and miRNA-155 can be regarded as an ideal diagnostic marker. On this basis, a portable sensor platform was designed for on-site detection simulation and showed good recovery efficiency from 95.80% to 98.69%. Meanwhile, compared with the standard detection method RT-qPCR, the accuracy and reliability of the biosensor were verified, indicating that the biosensor has the potential to provide point-of-care testing (POCT) for the early diagnosis of breast cancer.
研究领域:
生物医学工程
·
分子生物学
·
癌症诊断
✓ 已验证
产品关联
DOI
PubMed
高影响因子
INORGANIC CHEMISTRY
·
2022
·
IF 5.436
Mianmian Wu,Nan Li,Shixiang Zuo,Wenjing Shen,Guifang Sun,Qingfei Li,Minghao Shi,Jiangquan Ma
Piezocatalysis is a promising technology to address environmental pollution by converting mechanical energy into chemical energy. Herein, MoSe2 nanosheets with different 1T phase percentages (ranging from 30 to 80%) were constructed by adjusting hydrothermal temperature. Moreover, the roles of phase engineering in the piezocatalysis were thoroughly investigated by degrading rhodamine B and reducing Cr(VI) in ultrasonic vibration conditions. In particular, MoSe2 prepared at 220 °C (MoSe2-220) exhibits ultrahigh observed constant kobs and degradation rate k, which is superior to most reported catalysts to date. The experimental results indicate that the introduction of the 1T phase increases the active sites of the material, improves the conductivity, and inhibits the recombination of electrons and holes. Moreover, an internal electric field in the 2H phase induced by piezoelectric polarization is facilitated to separate electron–hole pairs, enabling the degradation and reduction to proceed. The capture experiments and EPR tests further confirm that •O2– and •OH are main reactive species, and a rational mechanism is finally put forward. This study offers a clear understanding of phase engineering in piezocatalysis and provides an efficiency strategy to construct highly efficient piezocatalysts.
研究领域:
环境科学
·
材料科学
·
化学工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CHEMOSPHERE
·
2022
·
IF 8.943
Jiaojiao Yang,Binyu Guo,Lei Li,Quanyuan Chen,Chensi Shen,Juan Zhou
The limited regeneration of Fe 2+ in the Fe-catalyzed advanced oxidation processes (AOPs) constrained its application for the removal of organic pollutants. Herein, MoSe 2 was introduced to promote the degradation of 2,4-dichlorophenoxyacetic acid (2,4-D) in the Fe 2+ /PMS system. Compared with Fe 2+ /PMS processes, the 2,4-D degradation efficiency and PMS decomposition rate respectively increased by 73.8% and 84.2% in the MoSe 2 /Fe 2+ /PMS system. DFT simulation results suggested that Se atoms acted smoothly as the bridge supporting the charge transfer from Mo to adjacent Fe atoms, which led to the reduction of Fe 3+ . The rapid regeneration of Fe 2+ boosted the activation of PMS and the degradation of pollutants. Additionally, the electron paramagnetic resonance (EPR) and quenching experiments results indicated that SO 4 ∙ − , ∙OH, and 1 O 2 accounted for 2,4-D degradation, and SO 4 ∙ − and 1 O 2 predominated the reaction. The Mo based co-catalysts showed better co-catalytic effect than the W counterparts, and the moderate adsorption for PMS and lower electron transfer electron transfer resistance accounted for the more excellent co-catalytic performance of MoSe 2 than that of WSe 2 . In addition, the degradation efficiency of 2,4-D was up to 95.5% after five cycles of MoSe 2 in the co-catalytic system. The coexistent humic acid (HA) and Cl − showed ignorant negative effect on the degradation, while HCO 3 − would depress the oxidation reaction. The acidic etching wastewater can be applied as the Fe ions source in this co-catalytic process to remove 2,4-D effectively.
研究领域:
环境科学
·
化学工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2024
·
IF 18.5
Cai Liu,Peng Zhao,Keren Lu,Shuai Han,Chao Zhang,Xifeng Xia,Wu Lei,Qiubo Guo,Qingli Hao
Heterostructured composites, inheriting the integrated properties of the individual components due to the synergistic effect, have engendered great attention in materials science and energy storage. However, conventional biphasic heterostructures not only optimize the performance of the composites but also aggregate the inevitable drawbacks, which can be addressed with the construction of the triphasic heterostructures by introducing an appropriate intermediate phase, significantly. Herein, a two-dimensional (2D) double-heterostructures MoSe 2 -TiO 2 -MXene anode is architected for Li-ion storage, which combines the advantages of the high theoretical capacity of MoSe 2 and metallic conductivity of MXene. Besides, the in-situ derived TiO 2 can alleviate the irreversible phase transition of MoSe 2 , arising from the low electronic/ionic conductivities, through electronic coupling effects. Meanwhile, the intermediate phase of TiO 2 can further prevent the restacking issue of MXene, thus sustaining its high conductivity. Finally, the three-dimensional (3D) printing technology is employed to further improve the kinetics of the electrodes for Li-ion capacitors (LICs), which deliver the power density of 5563 W kg −1 at an energy density of 51 Wh kg −1 , and a remarkable cycling stability for 20 000 cycles at 1 A g −1 . This work deepens the understanding of the influence of heterostructured engineering on the design of high-energy/power storage devices.
研究领域:
材料科学
·
能源存储
·
电化学
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）