INORGANIC CHEMISTRY COMMUNICATIONS
·
2025
·
IF 5.4
Xiaoyu Qiu,Linting Zou,Jianmei Cen,Xingnian Duan
In this research, Mo-oxides complexes combined with Co(OH) 2 grown on three-dimensional (3D) nickel foam (Mo-Co(OH) 2 /NF) were developed as a peroxymonosulfate (PMS) activator enabling a pathway transition from radical to non-radical for efficient degradation of organic pollutants. The incorporation of high-valence Mo species promoted the formation of sheet structure and facilitated the Co(II)/Co(III) ratio, while Co served as the primary active site for PMS activation. Consequently, complete removal of 40 mg/L Rhodamine B (RhB) in optimized conditions (catalyst = 1.5 cm 2 , 0.4 g/L PMS dosage, reaction temperature = 25 °C) was achieved within 2 min. In addition, excellent adaptability was exhibited over a wide pH (3.0–9.0) and versatility (99 %, 80.94 % and 91.54 % for MB, LFX, and TC, respectively) in Mo-Co(OH) 2 /NF + PMS system. Impressively, radical scavenging experiments and electron spin resonance (ESR) analyses revealed that the degradation process was mainly dominated by the conversion of O 2 •– to non-radical 1 O 2 . Hence, this work demonstrates the potential of high-valent metal-oxides complexes integrated with Co(OH) 2 as effective PMS activators for non-radical degradation of dye and other refractory antibiotics, significantly broadening their applications in environmental remediation.
研究领域:
环境科学
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材料科学
·
化学工程
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DOI
高影响因子
CRYSTENGCOMM
·
2016
·Vol. 18
·期 40
·7805-7813
·
IF 3.849
Xiu Liang,Xiao-Juan Zhang,Ting-Ting You,Guang-Sheng Wang,Peng-Gang Yin,Lin Guo
A new, feasible, and highly efficient platform was developed using self-assembly of (3-aminopropyl) diethoxymethylsilane (ATES) to create metallic oxide-based noble metal nanoparticle hybrid materials. The ex situ approach for fabricating 1D MoO3-nanowires (MoO3-NWs) or ZnO-nanorods (ZnO-NRs) @Au-nanoparticles (Au-NPs) hybrid surface-enhanced Raman scattering (SERS) substrates not only provides a simple route for the decoration of noble metal nanoparticle on metallic oxide nanomaterials, but also realizes the controllable assembly/co-assembly of pre-synthesized nanoparticles with distinctively different sizes, compositions, shapes, and properties. Control over the self-assembly synthesis for morphology and SERS activity was demonstrated by several parameters: (i) coupling agent of ATES, (ii) ATES content, (iii) Au-NPs content, (iv) Au-NP sizes, and (v) other metallic oxide such as ZnO-NRs. The finite difference time domain (FDTD) method was employed to visualize the enhancement mechanism distribution of the hybrid substrate. Furthermore, the optimized MoO3-NW@Au-NPs SERS substrate manifests high SERS sensitivity to melamine with a limit of detection (LOD) of 0.1 ppb (0.08 nM) and excellent uniformity (RSD = 9.26%). The LOD was much lower than the maximal residue limit (MRL) of 2.5 ppm in food prescribed by the US Food and Drug Administration (FDA).
研究领域:
纳米材料科学
·
分析化学
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食品安全检测
✓ 已验证
DOI
高影响因子
Journal of Materials Chemistry C
·
2023
·Vol. 11
·期 14
·4634-4644
·
IF 6.4
Yue Jian,Tianliang Xie,Litao Han,Dongxing Kou,Wenhui Zhou,Zhengji Zhou,Shengjie Yuan,Yuena Meng,Yafang Qi,Sixin Wu
As a promising absorber material for thin film solar cells, the highest reported power conversion efficiency (PCE) of Cu2ZnSn(S,Se)4 (CZTSSe) is still far from the detailed balance limit of efficiency due to the large VOC deficit. Back contact engineering plays an important role in promoting the CZTSSe solar cell towards realizing high PCE. In this study, a MoO3-modified layer with the highest oxidation state 6+ and better thermal stability was in situ introduced by spin-coating Na2S aqueous solution on the Mo electrode. The results demonstrate that the Na2S layer at the rear contact provides more Na to diffuse into the absorber, thus improving the crystallinity of the film and the quality of the p–n heterojunction, and the carrier collection in the neutral region and at the front interface of the devices is enhanced. The formation of the MoO3 layer can also inhibit the decomposition reaction between Mo and CZTSSe, which minimizes the secondary phases and voids, and improves the quality of the back interface. Moreover, the band alignment and interfacial barrier at the back contact were modified by the MoO3 layer, resulting in better carrier collection and the reduction of photogenerated carrier recombination. By optimizing the Na2S (MoO3) layer, the average PCE of the CZTSSe solar cell increased to 12.48% from 10.22% with the large VOC increments of 60 mV and FF increments of 5%, and the best performance was achieved, with an active area efficiency of 12.74% without the anti-reflection coating layer.
研究领域:
材料科学
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能源技术
✓ 已验证
产品关联
DOI
高影响因子
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
·
2019
·
IF 2.722
Xinbo Jing,Xueying Peng,Xiyin Sun,Wu Zhou,Wei Wang,Shufen Wang
In this study, a facile impregnation-calcination strategy was applied in order to synthesize Mo2C modified MoO3 (Mo2C/MoO3), which was then employed as catalyst for the photoreduction of Cr (VI) and photodegradation of methyl orange (MO) upon irradiation by visible light (λ > 400 nm). The apparent rate constant (k) of Mo2C/MoO3 for the MO photocatalyzed degradation reaction under visible-light irradiation was found to be 0.0171 min-1, which was 4.59 and 67.38 times higher than that of Pt/MoO3 and pristine MoO3, respectively. Study of the photocatalytic mechanism revealed that the •O2- species played a major role in MO degradation. Moreover, the addition of Mo2C enhanced the light response region of MoO3, and also promoted the photocatalytic activity of MoO3. This was due to the enhanced separation efficiency of photogenerated electron-hole pairs and broader photoresponse region. This work suggests a new use for the easily accessible Mo2C/MoO3 heterostructure and could facilitate the application of photocatalysts for wastewater treatment．
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
ACS Applied Energy Materials
·
2022
·
IF 6.959
Bo Zhang,Yongsheng Li,Yongji Chen,Haibiao Chen,Chen Zhu,Jian Liu,Yuan Lin,Feng Pan
The efficiency of silicon solar cells is largely affected by the quality of the front and back metallic contacts. In this work, MoO3 is added to the Al paste for the back contact of crystalline silicon solar cells. The MoO3 additive lowers the series resistance of the solar cell from 4.1 to 3.5 mΩ and increases the photoelectric conversion efficiency from 19.26 to 19.54%. We identify that the thermite reaction between MoO3 and Al takes place at about 800 °C and metallic Mo diffuses into the Al–Si solid layer, decreasing the barrier height between Al and Si and lowering the contact resistance. This work demonstrates an approach by optimizing the aluminum-back surface field (Al-BSF) in the back metallic contact of crystalline silicon solar cells to enhance the performance of the cell.
研究领域:
材料科学
·
能源技术
✓ 已验证
DOI
高影响因子
MICROCHEMICAL JOURNAL
·
2024
·
IF 4.9
Mingjun Sun,Kuan Ding,Yujie Lu,Xiaopeng She,Yi Chen,Mengqing Wang,Cheng Zou,Xiaoyu Liu,Yong Zhou
Of diverse NH 3 gas-detection strategies applied in the fields of individual healthcare and industrial production, chemiresistive gas sensors gain the most popularity owing to the superior merits of low cost, convenient signal processing and high sensitivity. However, severe challenges still exist such as elevated operation temperature (>200 °C), limited sensitivity and unsatisfactory selectivity especially under low-concentration and high-humidity conditions. To overcome these hindrances, a sensing layer of black phosphorus nanosheets (BP)-modified α-MoO 3 nanoflakes was prepared in this work. After subtle optimization of ingredient composition and operation temperature, the composite sensor S2 could recognize NH 3 gas with the concentration spanning from 0.4 to 25 ppm at 40 °C. In particular, a larger mean response (27 % vs. ∼ 2.3 %) with a response/recovery speed of 275/388 s toward 10 ppm NH 3 and lower detection of limit (LoD, 0.4 ppm vs. 10 ppm) was achieved with respect to pure BP counterpart. In addition, excellent repeatability, selectivity, long-term stability and humidity-tolerant features were demonstrated for Sensor S2 . The improved sensing performance after α-MoO 3 incorporation was primarily ascribed to abundant p-n heterojunctions, excellent conductivity of BP and hydrophilic MoO 3 that mitigated the water corrosion effect on susceptible BP nanosheets. This work offers an alternative strategy for sensitive and low-temperature NH 3 detection, and well cater for the demanding requirements of high sensitivity and low-power consumption in the field of novel gas sensors applicable in the future Internet of Things and exhaled breath-oriented medical diagnosis.
研究领域:
材料科学
·
化学传感
·
生物医学工程
✓ 已验证
DOI
高影响因子
BIOSENSORS & BIOELECTRONICS
·
2024
·
IF 10.7
Yajun Gao,Suhui Xu,Ge Guo,Yajie Li,Wenyuan Zhou,Huaxiang Li,Zhenquan Yang
Herein, novel nanozyme mimics MoO 3 /MIL-125-NH 2 were reported and conjugated with bacteriophages as a new electrochemical probe for high sensitivity and specific electrochemical detection of staphylococcus aureus . The excellent peroxidase-like activity of MoO 3 /MIL-125-NH 2 composites was attributed to the integration of MIL-125-NH 2 with MoO 3 , which can boost the generation of superoxide radicals (O• 2 – ) and thus promote the oxidation of TMB in the presence of H 2 O 2 . In this work, two bacteriophages named SapYZU04 and SapYZU10 were isolated from sewage samples by using staphylococcus aureus YZUsa12 as the host. In comparison, MoO 3 /MIL-125-NH 2 @SapYZU04 was selected as a recognition agent. The DPV current declined linearly with staphylococcus aureus YZUsa12 concentration in the range of 10 1 −10 8 CFU mL −1 , with a low detection limit of 16 CFU mL −1 (S/N = 3). 20 strains including 13 host strains and 7 non-host strains were used to evaluate the selectivity of the proposed sensor. Regardless of the differences in the degrees of lytic performance for phage SapYZU04, all selected host strains can be screened with merely the same DPV current. Host spectrum-oriented bacteriophage sensing is of great importance for the practical application of bacteriophage-based biosensors in the future.
研究领域:
生物传感
·
电化学检测
·
微生物学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
·
2024
·
IF 4.1
Xingnian Duan,Jianmei Cen,Xiaoyu Qiu,Xixiang Liu
The development of high-performance and cost-effective electrocatalysts for oxygen evolution reactions (OER) is key to renewable energy conversion and storage technologies. In this paper, a hierarchical Co(OH) 2 -MoO 3 nanosheets with petal-like architecture was prepared by a simple one-step hydrothermal method using ZIF-67/NF as a precursor, and it was used as a direct electrocatalyst for OER. Notably, this petal-like Co(OH) 2 -MoO 3 /NF layered nanosheets not only prevent the agglomeration of nanostructured material , but also facilitate the complete penetration and diffusion of electrolyte. In addition, due to the strong electronic interaction between Co(OH) 2 and MoO 3 in the Co(OH) 2 -MoO 3 /NF system, Co(OH) 2 -MoO 3 /NF exhibits excellent electrocatalytic OER performance. It has a low overpotential of 273 mV at 10 mA cm −2 and excellent stability. This study provides a simple and effective strategy for the rational design and structural evolution of MOF-derived materials to achieve inexpensive and effective electrocatalysis.
研究领域:
材料科学
·
能源化学
·
电催化
✓ 已验证
产品关联
DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2023
·
IF 6.7
Huijie Wang,Qi Liu,Mengyang Xu,Chenlong Yan,Xianghai Song,Xin Liu,Huiqin Wang,Weiqiang Zhou,Pengwei Huo
The localized surface plasmon resonance (LSPR) effect has shown significant progress in enhancing the efficiency of light absorption and separating photogenerated carriers. Herein, the dual-plasma enhanced 2D/2D/2D g-C 3 N 4 /Pd/MoO 3-x (CPM) S-scheme heterojunction photocatalysts were synthesized using the method of hydrothermal and electrostatic self-assembly for high-selectivity photocatalytic reduction of CO 2 to produce CO. The dual LSPR effect of MoO 3-x and ultrathin Pd nanosheets synergistically broadened the optical response range of the CPM composites and successfully improved the photocatalytic activity and near-infrared (NIR) performance. The optimized CPM-30 photocatalysts exhibited CO yields of 18.55 μmol g −1 with a selectivity of 96.3%. In addition, the CO yield reached 3.92 μmol g −1 after 4 h of NIR light photoirradiation. The electron spin resonance (ESR) and ultraviolet photoelectron spectroscopy (UPS) tests showed that the S-scheme heterojunctions were constructed by coupling g-C 3 N 4 /Pd nanosheets and MoO 3-x . This work will provide a reference for improving product selectivity through the design of two-dimensional composites and the utilization of plasma materials.
研究领域:
材料科学
·
光催化技术
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
NEW JOURNAL OF CHEMISTRY
·
2021
·Vol. 45
·期 36
·16482-16489
·
IF 3.591
Zhenzhen Yang,Bangchong Zhu,Yuhan He,Genlei Zhang,Peng Cui,Jianbo He
In this study, α-MoO3 nanobelts were successfully synthesized by a simple, green and economic hydrothermal method and applied as a bifunctional catalyst for one-step conversion of fructose to DFF under atmospheric air. The structure of the as-prepared α-MoO3 catalyst was characterized in detail by SEM, TEM, EDS, XRD, XPS, H2-TPR and NH3-TPD to better understand the relationship between structure and performance. α-MoO3 nanobelts exhibited high catalytic activities for production of DFF from HMF and fructose in atmospheric air. Under optimized reaction conditions, high DFF yields of 97.2% and 78.3% were obtained by using HMF and fructose as raw materials, respectively. Furthermore, a plausible reaction pathway was proposed for the selective oxidation of HMF to DFF according to the experimental and catalyst characterization results. Importantly, α-MoO3 is a robust catalyst that can be used at least five times without obvious loss in its catalytic activity. In brief, α-MoO3 is an easily-prepared, eco-friendly, low cost and highly effective catalyst which has potential application in one-step conversion of fructose to DFF under atmospheric air.
研究领域:
材料科学
·
催化化学
✓ 已验证
DOI
高影响因子
ACS Applied Nano Materials
·
2022
·
IF 6.14
Qingting Zhang,Andreas Goldbach,Na Ta,Wenjie Shen
Some of the most active catalysts for the selective oxidation of olefins are based on molybdenum oxides or silver (Ag) systems. Hence, we furnished α-MoO3 nanobelts (NBs) with size-controlled silver nanoparticles (Ag NPs) in order to explore the synergies between these materials. Intriguingly, the components reacted with each other at 350 °C to generate a Ag2Mo4O13 skin on the NBs, which turned them into a very selective catalyst for propylene conversion to acrolein. The selectivity to this aldehyde improved from less than 20% over bare NBs to ca. 75% at 350 °C, in line with the apparent intrinsic limit of other unpromoted molybdates. Propylene oxide formation appears to be completely inhibited because of the encapsulation of residual Ag NPs by silver molybdate. The reaction kinetic characteristics over Ag2Mo4O13 are consistent with a Mars–van Krevelen mechanism. However, the apparent activation energies for reoxidation of silver molybdate (86.9 kJ mol–1) and propylene activation (37.9 kJ mol–1) are considerably lower than those reported for other molybdates. The acrolein formation rate over the coated NBs exceeds that over bulk Ag2Mo4O13 by more than a factor of 10 because of the similarly enlarged surface area. On the basis of the Ag content, the rate gain is even boosted by 4 orders of magnitude because only marginal noble-metal amounts (<0.3 wt %), i.e., Ag2Mo4O13, are needed for optimum catalytic activity of the composite. Altogether, these features render Ag2Mo4O13-coated MoO3 NBs as a prototypal design for highly efficient, nanostructured selective oxidation catalysts.
研究领域:
催化
·
化学工程
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
SURFACE & COATINGS TECHNOLOGY
·
2024
·
IF 5.3
Dongqing Guo,Junhong Jia,Zongyu Zhang,Jie Yang,Jian Wang,Xiaoyu Jiao,Yun Shi,Leping Cai,Nairu He
In effort to reveal the high-temperature lubrication mechanisms of ternary oxides containing Mo/Co/Ni, the tribological characteristics of atmospheric plasma sprayed (APS) NiCrAlY-MoO 3 /CoO composite coatings at elevated temperatures were investigated. The high-temperature lubrication mechanisms of Co/Ni-molybdate formed on worn surfaces were analyzed through experimental analysis and density functional theory (DFT) calculations. The results demonstrate that the coefficient of friction (COF) of NiCrAlY coating after 30 % MoO 3 /CoO added decreased from 0.43 to 0.30 and the wear rate reduced from 5.00 × 10 −5 to 8.32 × 10 −6 mm 3 N −1 m −1 at 800 °C. This is ascribed to the synergistic lubrication effects of the layer crystal structured ternary oxides CoMoO 4 and NiMoO 4 , which are self-generated through tribo-chemical reactions on the worn surface at elevated temperatures. DFT calculations show that the binding energies of Co O (−1.05 eV) and Ni O (−0.61 eV) in the detected ternary oxides CoMoO 4 and NiMoO 4 are weaker than those of the corresponding bonds in binary oxides CoO (−1.99 eV) and NiO (−1.44 eV), and have potential to break more easily at high temperatures. Such layered structures with easy-to-break bonds of the ternary oxides containing Mo/Co/Ni provides excellent lubrication properties in the composite coatings.
研究领域:
材料科学
·
表面工程
·
计算化学
✓ 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）