INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
·
2021
·
IF 3.764
Zeqi Jin,Lan Wang,Tao Chen,Junmei Liang,Qicheng Zhang,Wenchao Peng,Yang Li,Fengbao Zhang,Xiaobin Fan
Designing hydrogen evolution reaction catalysts with high performance in alkaline conditions is important for reducing energy consumption during water electrolysis. This study reports an electrodeposition–calcination–electrodeposition strategy to construct the Ni–Mo–O/Ni4Mo nanointerface on an N-doped carbon support derived from polyaniline on carbon fiber paper. The N-doped carbon support not only stabilizes the metal/metal oxide nanointerface but also generates more active intrinsic sites and electrical conductivity via the metal–N interaction. The obtained Ni–Mo–O/Ni4Mo@NC displays a low overpotential of only 61 mV at a current density of 10 mA cm–2 for alkaline HER in 1 M KOH.
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高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2025
·
IF 6.3
Wenxue Zhao,Aihua Yan,Zigao Su,Fei Huang,Jixu Zhang,Ye Gao,Huaqi Yuan,Bolei Hui,Heng Wang
ZnIn 2 S 4 is a promising and typical semiconductor for photocatalytic water splitting into hydrogen production. However, the low charge-carrier utilization restricts its hydrogen evolution performance and practical application. In this work, a synergistic strategy of sulfur vacancy (S v ), internal electric field (IEF) and Mo-S bond was utilized for improving the charge-carrier utilization of MoS 2 /S v -MnS/ZnIn 2 S 4 composites. In particular, Z-scheme S v -MnS/ZnIn 2 S 4 heterojunction not only tackled the charge-carrier recombination problem but also improved the redox capability. Meanwhile, Schottky-type MoS 2 /S v -MnS contact further promoted the charge transfer through Mo-S bond “bridge”, accelerated the surface hydrogen reduction reaction kinetics, and thus boosted the charge-carrier utilization. As a result, the optimal MoS 2 /S v -MnS/ZnIn 2 S 4 catalysts could expeditiously produce 1.75 mL of hydrogen production within 3 h, and achieve a photocatalytic hydrogen evolution rate of 13.02 mmol g -1 h -1 . This work provides an ingenious method to synthesize ZnIn 2 S 4 -based photocatalysts with highly-efficient charge-carrier utilization.
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CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Maonan Ran,Guan Zhang
The NO 3 − electroreduction process presents a promising alternative to the Haber-Bosch method by offering dual benefits: removal of nitrates from wastewater coupled with efficient NH 3 production. Herein, Mo and S doped Fe 3 O 4 nanoplates grown on foam Fe (Mo-S-Fe 3 O 4 @FF) with electron-rich Mo δ+ state was synthesized through a facile hydrothermal approach. Notably, Mo-S-Fe 3 O 4 @FF electrode achieved a nearly fourfold enhancement in ammonium yield compared to foam Fe electrode, while also enhancing the NH 3 Faradaic efficiency. At − 1.3 V vs . Ag/AgCl in a K 2 SO 4 + KNO 3 solution, the Mo-S-Fe 3 O 4 @FF electrode attained a NH 3 Faradaic efficiency of 91.3 %. Furthermore, performance was observed to improve with increasing solution pH levels as the reaction proceeded. From both kinetic and thermodynamic perspectives, our findings demonstrate that high NH 3 production activity is characteristic of Mo-S-Fe 3 O 4 @FF—indicating significant enhancements in conversion rates from NO 3 − →NO 2 − →NH 3 . Theoretical calculation, in conjunction with experimental analyses, reveal that the co-modification of Fe 3 O 4 with Mo and S enhances electron transfer capacity during NO 3 − RR. This modification forms Lewis-acid (Fe-Mo) pairs that increase nitrate adsorption energy alongside Lewis-base (S-O) sites that attract protons, thereby improving overall NO 3 − RR activity. This report elucidates the synergistic effects of Lewis-acid and Lewis-base sites on optimizing catalytic performance for NO 3 − RR using foam Fe-based electrodes.
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CERAMICS INTERNATIONAL
·
2024
·
IF 5.1
Chunyang Zhang,Yifan Wang,Zexiong Wang,Shilong Zhao,Ruoshan Lei,Shiqing Xu
The development of ultrasensitive thermometric phosphors has become an active area of research due to their appealing applications in the contactless temperature detection field. Herein, the scheelite-related compounds—CaGd 2 (WO 4 ) 4 : Nd 3+ , Yb 3+ and CaGd 2 (MoO 4 ) 4 : Nd 3+ , Yb 3+ , which exhibit high sensing capacity—are successfully prepared and systematically characterized. The X-ray diffraction analysis reveals that CaGd 2 (WO 4 ) 4 : Nd 3+ , Yb 3+ exhibits the monoclinic structure, whereas CaGd 2 (MoO 4 ) 4 : Nd 3+ , Yb 3+ is in the tetragonal phase. The maximum phonon cut-off energy of CaGd 2 (WO 4 ) 4 : Nd 3+ , Yb 3+ is 929 cm −1 , slightly larger than that of CaGd 2 (MoO 4 ) 4 : Nd 3+ , Yb 3+ (904 cm −1 ). Irradiated by 980 nm laser, PL spectra consist of the Nd 3+ : 4 F j → 4 I 9/2 (j = 7/2, 5/2, 3/2) and Yb 3+ : 2 F 5/2 → 2 F 7/2 emissions located in the near-infrared (NIR) range. Negative and positive thermal quenching behaviors are observed for the emissions of Nd 3+ (754, 802, and 868 nm) and Yb 3+ (1008 nm), respectively, attributed to the cooperative effects of the phonon-assisted energy transfer process of Yb 3+ → Nd 3+ and excited state absorption process of Nd 3+ . Moreover, the host material can affect the luminescence properties, thermal enhancement factor of the NIR anti-Stokes emission, and thermal sensing performance of the Nd 3+ -Yb 3+ pair. Consequently, CaGd 2 (MoO 4 ) 4 : Nd 3+ , Yb 3+ exhibits higher sensing sensitivity (S r-max = ∼6.00%K −1 ) than CaGd 2 (WO 4 ) 4 : Nd 3+ , Yb 3+ (S r-max = ∼5.56%K −1 ). This study provides useful information for the construction of high-performance ratiometric thermometers based on the inverse thermal dependence of the NIR emissions of Nd 3+ and Yb 3+ ions.
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JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2025
·
IF 9.7
Fenglong Wu,Xiao Tian,Jin Song,Ying Zhang,Wei Li
The activation of the water molecule (H₂O) serves as the rate-determining step for hydrogen (H 2 ) evolution from the photo-assisted hydrolysis of ammonia borane (NH₃BH₃). Therefore, developing a low-cost efficient catalyst that can expedite the cleavage of O H bonds in H₂O is needed for improving hydrogen production efficiency in practical applications. Here, we prepared a supported non-noble metal catalyst (Co/Mo@MoO 2 –200) with a large number of active sites, comprising ultrathin low-crystalline cobalt (Co) nanosheets grown on amorphous molybdenum oxide (MoO 2 )-coated molybdenum (Mo) nanoparticles (Mo@MoO 2 –200), which serves as a high-performance non-noble metal catalyst to accelerate the activation of O H bonds in H 2 O. Notably, visible light irradiation facilitates the formation of ultrathin Co nanosheets by inducing the localized surface plasmon resonance of MoO 2 , as verified by transmission electron microscopy (TEM) images. Moreover, X-ray absorption near-edge structure (XANES) and X-ray photoelectron spectroscopy (XPS) spectra confirm the electron transfer from Co nanosheets to O sites in Mo@MoO 2 –200, establishing robust interfaces. Co/Mo@MoO 2 –200 exhibits high catalytic performance with the turnover frequency (TOF) value of 110.8 min −1 under visible light irradiation, which is greater than that of Co/Mo by 1.21 times and most of the reported Co-based catalysts. DFT calculations reveal that the Mo@MoO 2 –200 support in the catalyst can promote the Co-adsorption of NH 3 BH 3 and H 2 O, while facilitating H 2 desorption. Particularly, the Co/Mo@MoO 2 –200 can significantly decrease the activation energy barrier of the O H bond in H 2 O, compared with pristine Co and Mo@MoO 2 –200. This paper presents a flexible catalyst design strategy for NH 3 BH 3 hydrolysis and other H 2 O-associated catalytic reactions.
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高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2026
·
IF 12.5
Bingkun Liu,Weijun Tian,Bingjie Huo,Xinbo Wang,Xinran Yu,Wei Bao,Ke Yang,Minghan Li,Yushan Wei,Yinming Ji,Daoqing Lin
Harmless Resource Utilization of Iron Sludge. • Green Water Restoration Technology. • A study of continuous flow applications in agricultural drainage systems. • Full-link environmental safety assessment of microorganisms, plants, and human cells. The generation of iron sludge remains a key bottleneck in Fenton wastewater treatment technology. This study proposes a waste-to-treasure strategy, utilizing a simple calcination-hydrothermal process to prepare the S-scheme heterojunction photocatalyst iron-sludge-derived oxide/MoS 2 composite (FMx). FMx exhibited excellent photo-self-Fenton activity in degrading refractory sulfonylurea herbicides. Kelvin probe force microscopy and density functional theory calculations provide evidence for the formation of an internal electric field, unequivocally confirming the S-scheme charge transfer pathway. This configuration, coupled with the Mo-O-Fe interface, coordinates efficient space charge separation and drives a sustainable Mo 4+ /Mo 6+ co-catalytic redox cycle, thus accelerating Fe 3+ /Fe 2+ conversion and in situ H 2 O 2 generation. Therefore, the reaction rate constant of the FM4 (4% iron-sludge-derived oxide) system is 74.6 times higher than that of pristine MoS 2 . To bridge the gap with practical applications, a continuous flow reactor was constructed, demonstrating strong remediation efficacy in real agricultural runoff. Furthermore, a comprehensive multi-trophic ecotoxicological assessment covering microbial communities, plants, and human cell lines validated the biosafety and ecological compatibility of treated wastewater. This work not only proposes a cost-effective solid waste recycling value-added scheme (< 0.5 RMB L −1 ) but also clarifies the mechanism for controlling advanced self-photo-self-Fenton systems.
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INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY
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2026
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IF 3.7
Wang Jiantao,Chen Hongxing,Zhang Conglin,Cao Jiangdong,Jiang Bochen,Guan Qingfeng
This study presents an innovative approach to overcome Cu-based materials’ inherent limitations (inadequate wear/corrosion resistance) and the alloying challenge of the immiscible Cu-Mo system. Using ultra-high-speed laser cladding, we fabricated Cu-Mo cladding layer with optimized parameters via Box-Behnken Design (BBD) response surface methodology, with three key variables: laser power (2500–4000 W), scanning speed (100–200 mm/s), and powder feeding rate (1.5–2.5 r/min). Comprehensive characterization techniques including X‑ray diffraction (XRD), Scanning Electron Microscope (SEM), Energy‑dispersive X‑ray spectroscopy (EDS), microhardness testing, and electrochemical analysis, complemented by laser power single-factor experiments, elucidated the underlying mechanism of laser power-regulated Mo particle dissolution-dispersion and its correlation with the microstructure-performance of Cu-Mo cladding layer. Results showed scanning speed and powder feeding rate were predominant in controlling cladding thickness. At the optimal 3000 W, Mo particles uniformly dispersed in the Cu matrix, achieving 0.99% porosity, 71.0 HV microhardness, 1.451 × 10⁻⁵ mm³·N⁻¹·m⁻¹ wear rate, and superior corrosion resistance (7.36 µA/cm² in 3.5 wt% NaCl). The optimized parameters ( P = 3000 W, V = 150 mm/s, F = 2 r/min) establish a technical foundation for immiscible alloy system surface strengthening.
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Journal of Environmental Chemical Engineering
·
2023
·Vol. 11
·期 6
·111477
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IF 7.7
Siyi Zhou,Fang Zhu,Hao Cheng,Sridhar Komarneni,Jianfeng Ma
In this study, Ni 3 S 2 @Mo 2 S 3 composites were grown on the surface of molybdenum-nickel (Mo-Ni) foam in situ by a one-step hydrothermal method . With p-nitrophenol (PNP) as the target pollutant, the catalyst can produce a good synergistic effect with ozone, and the degradation rate of PNP is more than 96%. Even after five cycles, Ni 3 S 2 @Mo 2 S 3 -NF/O 3 was able to degrade PNP efficiently and stably. In addition, the unique three-dimensional structure of Ni 3 S 2 @Mo 2 S 3 -NF solves the separation and recycling problem of traditional powder catalysts by maintaining the structural stability during the use process and thus, may reduce the cost of water treatment. The degradation process is mainly dominated by non-radical pathways, and the radical pathway, which work synergistically. This work reveals the influencing factors and degradation mechanism of Ni 3 S 2 @Mo 2 S 3 -NF/O 3 system for PNP degradation, which provides a new idea for water treatment and broadens its potential application.
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Journal of Materials Chemistry A
·
2026
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IF 9.2
Shaoyan Huang,Shuling Liu,Sha Fan,Rui Su,Libo Liu,Deliang Tian,Jinbao Li,Jianbo Tong
Manganese-based cathode materials are highly promising for large-scale aqueous zinc-ion batteries (AZIBs) due to their high specific capacity, low cost, and environmental benignity. However, structural instability and severe Mn dissolution at the cathode/electrolyte interface during cycling lead to rapid capacity degradation, which greatly limits their practical application. To address these critical issues, this work proposes an innovative Mo/N cation–anion co-doping strategy for δ-MnO2, which differs from single Mo or N doping and achieves synergistic optimization of structural and electrochemical properties. Specifically, Mo doping effectively modulates the lattice parameters of δ-MnO2 to expand ion diffusion channels, while N doping strengthens the layered framework and suppresses Mn dissolution. Their synergistic effect significantly enhances electronic conductivity and structural robustness compared with single-doped or pristine δ-MnO2 samples. The optimized Mo0.1/N1-δ-MnO2 cathode delivers a high discharge specific capacity of 370.8 mAh g−1 at 0.2 A g−1, retaining 270.0 mAh g−1 after 200 cycles; it also delivers 140.0 mAh g−1 at a high current density of 1 A g−1 and still retains a capacity of 80.6 mAh g−1 after 800 cycles. Combined with in situ EIS, ex situ XRD, and DFT calculations, the underlying mechanism is quantitatively revealed through Mo/N co-doping induced reduction of the Zn2+ diffusion barrier, optimization of ion migration pathways, and regulation of the reversible Zn2+/H+ co-intercalation mechanism. This work provides clear mechanistic insights and establishes a reliable cation–anion co-doping design principle for high-performance Mn-based AZIB cathodes.
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JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2022
·
IF 9.965
Xianbo Yu,Feng Yan,Bo Geng,Xiaoming Bai,Chenghao Zhao,Ming Wang,Yang Zhao,Guangyu Zhao,Xitian Zhang
The Gibbs free energy of hydrogen adsorption at the edge of molybdenum disulfide (MoS 2 ) is close to that of Pt, meaning that MoS 2 is the best candidate to replace Pt-based materials. However, easy agglomeration between layers to mask active sites, lack of catalytic activity in the basal planes, and poor electronic conductivity make MoS 2 exhibit dissatisfactory hydrogen evolution reaction (HER) catalytic performance. Here, we successfully construct a van der Waals heterostructure stacked alternately with Mo(SSe) 2-x and graphene (Mo(SSe) 2-x /G) to enhance its catalytic ability. The introduction of Se into MoS 2 and the thermal treatment induce the sample to generate more anion vacancies. Theoretical and experimental results demonstrate the constructed van der Waals heterostructure, the introduced Se element, and the increased anion vacancies are in favor of promoting the number of active sites and improving the electronic conductivity of the catalyst. Therefore, Mo(SSe) 2-x /G exhibits superior HER catalytic performance (the overpotentials of 137 mV and 136 mV at a current of 10 mA cm −2 ) and long-term stabilities (>90 h and 140 h at a current density of 20 mA cm −2 ) in both acidic and alkaline media.
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CHEMICAL ENGINEERING JOURNAL
·
2023
·
IF 15.1
Taozhen Li,Jingwen Pan,Xiaoning Wang,Zihao Fan,Tao Shi,Lei Wang,Baoyu Gao
Electron-rich Fe sites in iron-based catalysts provide sufficient electrons to activate peroxydisulfate (PDS) for organic pollutants degradation, whereas catalyst activity is restricted by the inert Fe(III)/Fe(II) conversion. Herein, we synthesized Fe and Mo co-doped carbon (Fe/Mo@C) catalysts to explore the effect of Mo doping on Fe(III)/Fe(II) cycling during PDS activation process. Compared to the sole Fe loaded carbon (Fe@C), the introduced Mo converted the iron to a lower valence state (Fe 0 and Fe(II)) during the catalysts preparation. Bisphenol A (BPA) was completely degraded within 10 min in Fe/Mo@C-PDS system with the degradation rate of 0.70 min −1 , which was 26 times higher than that in Fe@C-PDS system. Mechanism studies indicated that the introduction of Mo promoted the cycling of Fe(II)/Fe(III) in catalytic-oxidation system and accelerated the generation of more SO 4 •− , resulting in a significant improvement of the catalytic activity. Density functional theory (DFT) calculations revealed that Mo doping facilitated PDS adsorption onto Fe/Mo@C and accelerated the O-O breaking in PDS to produce more SO 4 •− for BPA degradation. Besides, the intermediates formed during the BPA degradation in Fe/Mo@C-PDS system exhibited lower bio-toxicity than the pristine BPA and those in Fe@C-PDS system. This work elucidates the mechanism of Mo doping to improve the catalytic activity of iron-based catalysts in sulfate-based advanced oxidation processes, providing a new strategy for solving the blockage of Fe(II)/Fe(III) cycle.
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JOURNAL OF ALLOYS AND COMPOUNDS
·
2021
·
IF 5.316
Xiaohui Ma,Wenjun Li,Chaojun Ren,Hongda Li,Xintong Liu,Xinyang Li,Tianyu Wang,Mei Dong,Shujing Liu,Shaowei Chen
Herein, noble-metal-free In 2 S 3 -WC and In 2 S 3 -based photocatalysts with dual cocatalysts of flower-like MoS 2 and bulk WC were synthesized through a facile solvothermal reaction. Electrochemical results indicated WC increased the interface conductance of photocatalyst and boosted the transference of photogenerated carriers. The optimal In 2 S 3 -WC show a hydrogen production rate of 128.11 μmol·h −1 ·g −1 , which is around 6 times higher than In 2 S 3 -1%Pt (20.73 μmol·h −1 ·g −1 ). The above results demonstrate commercial WC has a crucial impact of replacing precious metal and separating carriers. Morphology characterization exhibited hydrangea In 2 S 3 and flower-like MoS 2 were attached to bulk WC. Gratifyingly, photocurrent, impedance and photoluminescence results demonstrated MoS 2 further effectively separated the photogenerated carriers. Remarkably, the higher hydrogen generation rate of 390.52 μmol·h −1 ·g −1 obtained by the optimal ternary In 2 S 3 -WC-MoS 2 composite was around 3 and 18 times higher than the optimal In 2 S 3 -WC and In 2 S 3 -1% Pt. The photocatalytic results demonstrated that "W-Mo auxiliary pairs" was a great efficient synergistic cocatalyst for In 2 S 3 to increase active sites and improve e - -h + pairs separation for H 2 generation. Furthermore, a probable reaction mechanism of the enhanced photocatalytic H 2 generation was also proposed. This presented research provides an effective concept to design novel and efficient noble-metal-free photocatalyst with "W-Mo auxiliary pairs" for prominent H 2 generation activity.
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