GREEN CHEMISTRY
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2026
·
IF 10.6
Yang Li,Guoen Zhang,Chuanshun Feng,Feng Lin,Huan Ye,Wenqi Wei,Qicheng Zhang,Wenchao Peng,Xiaobin Fan
Electrocatalytic conversion of polyethylene terephthalate (PET) plastic waste into formate coupled with hydrogen generation represents a sustainable pathway for plastic upcycling. Herein, a nickel sulfide catalyst (Mo,Cl-Ni3S2) is developed for efficient and stable ethylene glycol (PET monomer) oxidation reaction (EGOR) through a Mo and Cl co-doping strategy. The optimized catalyst Mo,Cl-Ni3S2 possesses a high formate Faradaic efficiency of 94.0% at 1.55 V vs. RHE. Moreover, it maintains 83.3% of its initial activity after 95 hours continuous operation at an industrial current density of 300 mA/cm2. Experiment and theoretical simulations demonstrate Mo and Cl co-doping optimizes the electronic structure of Ni3S2 by upshifting the Ni d-band center and facilitates the in situ structure reconstruction during EGOR. Finally, an integrated acidification-precipitation-recrystallization strategy is proposed to separate and recover terephthalic acid (TPA) and potassium formate. This method offers a holistic approach for upcycling PET waste into value-added chemicals and hydrogen.
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INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
·
2026
·
IF 3.9
Jinna Liu,Yi Wang,Yang Li,Peiliang Sun,Zhichao Sun,Ying-Ya Liu,Chong Peng
Encapsulating the USY zeolite within a mesoporous SBA-15 shell is a promising strategy to construct hierarchical catalysts with regulated acidity. However, the acidic conditions required for SBA-15 synthesis pose a stability challenge to the acid-sensitive USY core. In this work, we first systematically investigated the physicochemical evolution of USY under simulated SBA-15 synthesis conditions by varying the acid concentration, temperature, and treatment time. Through XRD, N2 physisorption, NH3-TPD, and Py-FTIR analysis, the optimal conditions for USY to retain its framework integrity and Brønsted acidity were determined to be ≤1.0 M HCl and treatment time ≤24 h. This acid-tailored optimization is essential for the subsequent fabrication of the core–shell structure. Guided by these findings, the Ni–Mo/USY@SBA-15 core–shell catalyst is successfully prepared and evaluated in naphthalene hydrocracking, achieving 97.8% conversion and 51.6% BTX selectivity, outperforming conventional Ni–Mo/USY (92.6% conversion and 26.0% BTX selectivity). XPS analysis provides direct evidence of the spatially regulated metal-acid distribution and enhanced electron density on active sites. The performance enhancement is attributed to the hierarchical pore structure and the spatially regulated metal-acid distribution, which together enhance mass transfer, optimize acid site accessibility, and suppress overcracking. This study provides an acid-tolerance-guided synthesis strategy for designing high-performance core–shell zeolite catalysts.
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CORROSION SCIENCE
·
2023
·
IF 8.3
Mingyong Jia,Fei Chen,Xipeng Tan,Yaling He,Yueqi Wu,Qiang Shen
The high-temperature corrosion behavior of an AlN/Mo functionally graded material (FGM) under the Li/LiF-LiCl-LiBr vapor has been investigated. It is suggested that the Li vapor diffuses along the AlN and AlN/Mo grain boundaries and enters the interior of adjacent AlN grains, leading to the disintegration of AlN grains and subsequent failures. The 3D Mo networks are barely corroded, thus preventing cracking that may occur due to the inconsistent deformation inside the FGM. This work unravels the high-temperature corrosion mechanisms for the AlN/Mo FGM. Meanwhile, the operating temperature threshold for the liquid metal batteries employing Mo/AlN/Mo seals is determined to be ∼ 600 °C.
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高影响因子
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
·
2023
·Vol. 34
·期 15
·1-16
·
IF 2.8
Ding Huihui,Shi Huimin,Wang Tao,Zhang Hengyang,Li Shuang,Zhang Xinshui
In the photocatalytic process, mixed-phase TiO 2 tends to have more carrier transport channels compared with single-phase TiO 2 , which can further accelerate the separation of photogenerated carriers. In this study, biphasic TiO 2 nanofibers containing both rutile and anatase phases were synthesized by electrostatic spinning technique. Subsequently, a variety of biphasic TiO 2 /Ag 3 PO 4 nanofiber photocatalytic materials with different ratios were prepared by combining the in situ growth process. The test results confirm that not only heterojunctions are formed between the components of the composites, but also the optical properties are improved. When the content of Ag 3 PO 4 was 25 wt%, the composite showed excellent photocatalytic activity for both rhodamine B (RHB) and methyl orange (MO). In addition, the main active substances and stability of the composite were investigated by doing active agent capture experiments and stability tests, and a reasonable photocatalytic mechanism was proposed on the basis of the relevant test results.
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高影响因子
NEW JOURNAL OF CHEMISTRY
·
2023
·Vol. 47
·期 27
·12620-12627
·
IF 3.3
Ying Wu,Junhao Lu,Jinjin Zhao,Ran Zhang,Shaohong Zhang,Zhijuan Wang
MOF-derived phosphide on nickel foam has been successfully synthesized (Mo–Ni2P@NiO/NC/NF), and has been used as a bifunctional catalyst for both the HER at the cathode and the UOR at the anode for urea–water electrolysis. Mo–Ni2P@NiO/NC/NF was used as the electrode to form a Mo–Ni2P@NiO/NC/NF‖Mo–Ni2P@NiO/NC/NF electrolysis cell, which showed a low voltage (1.496 V) for the UOR&HER at a current density of 10 mA cm−2. Moreover, the electrocatalytic performance and morphology of Mo–Ni2P@NiO/NC/NF are not changed in a long-term test, indicating that it has high activity and good stability. This study shows an efficient way to synthesize a promising bifunctional catalyst by developing MOF-derived phosphides on nickel foam.
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Catalysts
·
2023
·Vol. 13
·期 6
·924
·
IF 3.9
Li Xu,Yuxuan Dong,Wei Xu,Wen Zhang
Preparing high-performance electrocatalysts for oxygen evolution reaction (OER)s with high durability for seawater electrolysis is of great significance. Herein, reported a one-step solution-immersion synthesis strategy to prepare a (Ni/Fe/Mo)OOH catalyst on a nickel foam substrate that can be accomplished in 5 min under ambient temperature and pressure. The unique cluster morphology of the catalyst on the surface of electrodes effectively increases the number of active sites, and the presence of Mo, Ni, and Fe in the catalyst enhances the activity of the OER. In the electrolyte solution (1 mol/L NaOH), the electrode exhibited low OER overpotentials of 265 mV, 286 mV, and 332 mV at currents of 100 mA·cm−2, 400 mA·cm−2, and 1000 mA·cm−2, respectively. This electrode also demonstrated excellent performance in seawater splitting, and the overpotentials at currents of 100 mA·cm−2, 400 mA·cm−2, and 1000 mA·cm−2in alkaline seawater environments were 330 mV, 416 mV, and 514 mV, respectively. In the 72 h durability test, the voltage increase was within 10 mV, exhibiting the excellent durability of the (Ni/Fe/Mo)OOH electrocatalyst. Therefore, the electrode developed here shows potential in the application of seawater electrolysis for hydrogen generation.Keywords:oxygen evolution reaction;(Ni/Fe/Mo)OOH catalyst;ultrafast and facile synthesis;alkaline seawater electrolysis
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JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2022
·
IF 9.965
Liyan Wang,Xiangdong Xue,Qingjie Luan,Junzhen Guo,Liang Chu,Zhaokun Wang,Baozhen Li,Mu Yang,Ge Wang
Accelerating charge transfer efficiency by constructing heterogeneous interfaces on metal-based substrates is an effective way to improve the electrocatalytic performance of materials. However, minimizing the substrate-catalyst interfacial resistance to maximize catalytic activity remains a challenge. This study reports a simple interface engineering strategy for constructing Mo-Ni 9 S 8 /Ni 3 S 2 heterostructured nanoflowers . Experimental and theoretical investigations reveal that the primary role assumed by Ni 3 S 2 in Mo-Ni 9 S 8 /Ni 3 S 2 heterostructure is to replace nickel foam (NF) substrate for electron conduction, and Ni 3 S 2 has a lower potential energy barrier (0.76 to 1.11 eV) than NF (1.87 eV), resulting in a more effortless electron transfer. The interface between Ni 3 S 2 and Mo-Ni 9 S 8 effectively regulates electron redistribution, and when the electrons from Ni 3 S 2 are transferred to Mo-Ni 9 S 8 , the potential energy barriers at the heterogeneous interface are 1.06 eV, lower than that between NF and Ni 3 S 2 (1.53 eV). Mo-Ni 9 S 8 /Ni 3 S 2 -0.1 exhibited excellent oxygen evolution reaction (OER)/hydrogen evolution reaction (HER) bifunctional catalytic activity in 1 M KOH, with overpotentials of only 223 mV@100 mA cm −2 for OER and 116 mV@10 mA cm −2 for HER . Moreover, when combined with an alkaline electrolytic cell, it required only an ultra-low cell voltage of 1.51 V to drive a current density of 10 mA cm −2 . This work provides new inspirations for rationally designing interface engineering for advanced catalytic materials.
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PubMed
高影响因子
Particuology
·
2022
·
IF 3.251
Hengyuan Liu,Xingjiang Wu,Jianhong Xu
Electrocatalytic nitrogen reduction reaction (NRR) is regarded as a potential routine to achieve environment-friendly ammonia production, because of its abundant nitrogen resources, clean energy utilization and flexible operation. However, it is hindered by low activity and selectivity, in which condition well-designed catalysts are urgently in need. In this work, a binary Mo/Ir nanodots/carbon (Mo/Ir/C) hetero-material is efficiently constructed via microfluidic strategy, of which the nanodots are homogeneously distributed on the carbon skeleton and the average size is approximately 1 nm. Excellent performance for NRR is obtained in 1 mol L −1 KOH, of which the optimized ammonia yield and faradic efficiency are 7.27 μg h −1 cm −2 and 2.31% respectively. Moreover, the optimized ammonia yield of 6.20 μg h −1 cm −2 and faradic efficiency of 10.59% are also obtained in 0.005 mol L −1 H 2 SO 4 . This work achieves the continuous-flow synthesis and controllable adjustment of hetero-materials for favorable morphologies, which provides an innovative pathway for catalyst design and further promotes the development of ammonia production field.
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高影响因子
INTERNATIONAL JOURNAL OF REFRACTORY METALS & HARD MATERIALS
·
2023
·
IF 3.6
Meng-Chao Li,Lu Wang,Zheng-Liang Xue
The influences of different parameters, such as reaction temperature, yttrium (Y) content, and H 2 concentration, on the particle size and morphological structure of Mo powder prepared via the H 2 reduction of MoO 2 , were investigated in the work. TG, XRD , FE-SEM, laser particle size analysis , model fitting, and orthogonal design experiment methods were adopted to analyze the reaction kinetic and reduction mechanism. The results showed that the optimum conditions for preparing ultrafine Mo powder were recognized as 1073 K, 1 mass% Y content, and a H 2 concentration of 0.000576 mol·cm −2 ·min −1 , which enabled the as-prepared Mo powder with a particle size as small as 107 nm. A new interfacial chemical reaction model with the consideration of reaction temperature, H 2 concentration, and sample thickness, was proposed to analyze the reaction kinetic. It was found that the curves predicted by the model agreed well with the experimental data, with the apparent activation energy extracted to be 94.686 kJ/mol. The effect of different individual parameter on the reaction rate and the possible reduction mechanism were also elucidated.
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高影响因子
ENVIRONMENTAL RESEARCH
·
2022
·
IF 8.431
Hao Liu,Chao Huang,Ping Wang,Su Huang,Xiong Yang,Haiyin Xu,Jian Zhu,Dingxun Ling,Chonglin Feng,Zhiming Liu
A novel 3D α-FeOOH@MoS 2 /rGO nanocomposite was successfully fabricated by a simple in situ hydrothermal method. It is a highly efficient heterogeneous catalyst in activation of peroxymonosulfate (PMS) for rapid degradation of rhodamine B (RhB), with 99.9% of RhB removed within 20 min. The introduction of rGO contributes to uniform dispersion and sufficient contact of α-FeOOH and MoS 2 nanosheets. Highly active Mo(IV) enhances the reduction of Fe(III), improves Fe(III)/Fe(II) conversion and promotes the generation of O 2 1 , which ensures an improved catalytic activity . MoS 2 /rGO hybrid can effectively solve the problem of material reunion and make α-FeOOH exhibit excellent catalytic performance. The α-FeOOH@MoS 2 -rGO/PMS system is a co-catalytic system based on the active components of α-FeOOH and MoS 2 . The main reactive oxygen species in the α-FeOOH@MoS 2 -rGO/PMS system are O 2 1 , S O 4 . − and ⋅ O 2 − , which contribute to a high reactivity over a wide range of pH (5–9). Besides, this system is highly resistant to anions ( C l − , S O 4 2 − ) and natural organic matter (humic acid), and can be widely used for degradation of common organic pollutants. The α-FeOOH@MoS 2 /rGO is a promising Fenton-like catalyst for refractory organic wastewater treatment .
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PubMed
高影响因子
ChemistrySelect
·
2022
·Vol. 7
·期 40
·e202203035
·
IF 2.307
Yuxiu Fu,Yaming Pang,Yinan Zheng,Xiaoli Song,Liguo Gao
Graphical Photocatalysts enhance the ability to absorb low-energy photons due to the reduction of the band gap. Through the photocatalytic mechanism, it is known that when there is irradiation with light (hv) energy entering Mg 2+ -Mo 6+ -Al 3+ -MoO 4 2− -Layered double hydroxides (LDHs), highly active hole-electron pairs will be generated, and a large amount of ⋅OH will be generated after the reaction, which can completely oxidize the phenol in water into CO 2 and H 2 O. Mg 2+ -Mo 6+ -Al 3+ -MoO 4 2− -Layered double hydroxides (LDHs) materials were successfully prepared via a hydrothermal method by doping Mo 6+ in hydroxide laminates and inserting MoO 4 2− to replace the interlayer anions of LDHs materials. The samples were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscope (TEM), Fourier transform infrared spectrometer (FTIRS) and ultraviolet-visible spectrophotometer (UV). The electronic density of states was calculated using the density functional theory (DFT) of Vienna Ab-initio Simulation Package (VASP). The effects of Mo 6+ and MoO 4 2− on the structure, morphology, electronic structure and photocatalytic performance of Mg 2+ -Al 3+ -LDHs were systematically studied. The conditions for phenol degradation by Mg 2+ -Mo 6+ -Al 3+ -MoO 4 2− -LDHs were optimized by single factor analysis and response surface methodology. The results show that the MoO 4 2− anion reduces the band gap width and thus enhances the absorption of low-energy photons. The interaction between cations and anions enhances the photocatalytic performance. When the dosage of Mg 2+ -Mo 6+ -Al 3+ -MoO 4 2− -LDHs was 0.03 g, the temperature was 40 °C and the visible light irradiation was 15 min, the removal rate of phenol reached 94.76 %.
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Particuology
·
2022
·
IF 3.251
Chao Song,Yuhua Liu,Chengxiang Huang,Miao Liu,Nailin Yue,Zunhao Zhang,Zizhun Wang,Xu Zou,Wei Zhang,Weitao Zheng
Through inverted-design rather than modifying the generally-assumed S active sites in popular MoS 2 , we unlock the potential of Mo sites and successfully prepared novel MoS 2 @Ni 3 S 2 /NF core-shell nanospheres as a catalyst for the high-performance hydrogen evolution reaction (HER). The ΔG H at the Mo site is optimized via Ni 3 S 2 to achieve excellent HER activity. At low current densities, it has similar activity to the Pt/C. However, its performance is better than Pt/C at high density. Moreover, our catalyst shows a considerable stability at a variety of current densities for 50 h, promising to substitute noble metal catalysts in application of commercial alkaline electrocatalysts .
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