JOURNAL OF ALLOYS AND COMPOUNDS
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2026
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IF 6.7
Linkun Liang,Xueping Zheng,Yifang Yao,Shenglin Liu,Jianzhong Wang,Wenshuai Liu,Chunxu Hu,Yuxuan He
In the context of hydrogen energy development, hydrogen production technology based on the hydrolysis of sodium borohydride (NaBH 4 ) has attracted considerable attention owing to its mild reaction conditions and the high-purity hydrogen generation. Nevertheless, the intrinsically sluggish hydrolysis kinetics of NaBH 4 require the development of non-noble metal catalysts that simultaneously achieve high catalytic activity and excellent durability. In this work, a molybdenum-doped cobalt hydroxide (MoO 2 -Co(OH) 2 ) catalyst was fabricated via a homogeneous urea precipitation approach, and its catalytic performance for H 2 generation from NaBH 4 hydrolysis was systematically evaluated. Concurrently, SEM, TEM, and XPS characterizations collectively elucidated the reaction pathway and electronic modulation mechanism involving Mo-doping-induced Co 2+ oxidation and oxygen vacancy generation. Additionally, this study demonstrates that the composite material possesses favorable surface hydrophilicity and exceptional synergistic catalytic activity. Through systematic modulation of the Mo/Co molar ratio, the MoO 2 -Co(OH) 2 catalyst achieved an exceptional hydrogen generation rate (HGR) of 9831.46 mL·min −1 ·g −1 at ambient temperature, concomitant with a markedly reduced activation energy (38.81 kJ·mol −1 ) relative to pristine Co(OH) 2 (68.97 kJ·mol −1 ). Furthermore, the catalytic performance of this system is comparable to, or even superior to, that of state-of-the-art Co-based catalysts. The superior catalytic performance was ascribed to the synergistic contributions of abundant defect sites afforded by the amorphous architecture, the intrinsically enhanced activity stemming from the electronic structure modulation, and the enhanced stability endowed by the compact microstructure.
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Catalysts
·
2026
·Vol. 16
·期 7
·613
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IF 4.5
Xin Wang,Yunkai Zhou,Qingsong Wang,Dongxue Liang,Wenjia Li,Zhou Zhang,Mingqiang Zhu,Jia Wang
Hydrolysis of cellulose to produce ethanol has become an effective way to utilize biological resources, but its large-scale industrial application has been limited. In this study, a one-pot catalytic conversion process for transforming cellulose into ethanol was developed. Meanwhile, multifunctional Mo/Pt/WOx/Al2O3catalysts were prepared by loading nano-alumina (Nano-Al2O3) via a stepwise impregnation method. The influence of catalysts with varying metal ratios on the types of products generated during the cellulose hydrolysis process to ethanol was examined. The catalyst with 0.1% Mo, 2% Pt, and 7.5% W loadings showed the best selectivity. With an ethanol yield of 45.3% after heating at 5 MPa H2and 518 K for 2 h. Nano-Al2O3can provide suitable active sites. The addition of W5+and Mo0increased the surface oxygen vacancy density and enhanced the hydrodeoxidation and metal anchoring capacity of the catalyst. The solid solution structure facilitates electron transfer from W and Mo atoms to Pt atoms, forming electron-rich Ptδ-species, promoting the hydrolysis of cellulose and the formation of ethanol.
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INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
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2026
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IF 9.2
Kai Zhao,Yiwei Yang,Jinze Li,Jiakun Mei,Jie Luo,Jun Li,Yongliang Zhang,Ting Liu,Qing Xu,Min Chen,Jingjing Li
Solid oxide fuel cells (SOFCs) operating on sulfur-containing hydrocarbons suffer from rapid poisoning of conventional Ni-based anodes. Herein, we report a synergistic design integrating a Mo-mediated sacrificial capture mechanism with a hierarchical hybrid-pore microstructure. Mo acts as a preferential thermodynamic trap with a significantly stronger H 2 S adsorption energy (−1.07 eV) than Ni (−0.61 eV), lowering the local sulfur chemical potential to suppress nickel sulfidation. This effect is amplified by the hybrid-pore microstructure, reducing H 2 S concentrations from 120 to 14 ppm. Furthermore, we demonstrate an in-situ regeneration mechanism where sulfidized Mo phases dynamically regenerate, ensuring continuous catalysis. This dual strategy of capture and regenerability yields exceptional resilience in sulfur-laden hydrogen and methanol over 300 h. Stable operation limits are extended by 2.6- and 2.3-fold, respectively, suppressing the degradation rate to 0.4 mV h −1 . This establishes a fundamental pathway for designing robust anodes for direct hydrocarbon SOFCs.
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JOURNAL OF CATALYSIS
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2026
·
IF 6
Jie Wang,Feng Gao,Jilei Lin,Chunjuan Zhang,Meiqing Shen,Linghui Kong,Gurong Shen
Ammonia is emerging as a promising carbon-free energy carrier. The electrocatalytic ammonia oxidation reaction (AOR), highly structure-sensitive, exhibits exceptional activity on Pt nanocubes (NCs) with (100) facets. Yet, synthesis methods employing metal carbonyl capping agents inevitably introduce residual metals, whose catalytic effects are often neglected. Here, Pt NCs synthesized with Mo(CO) 6 were found to contain trace Mo both in the bulk and at the surface. Surface Mo species, partially oxidized to MoO x , substantially modify the electronic structure of Pt(100), lowering activation barriers for rate-determining AOR steps and enhancing resistance to nitrogen poisoning. These effects collectively boost AOR performance, enabling a direct ammonia fuel cell with a Pt-154 anode to achieve a peak power density of 26.7 mW cm −2 . These results reveal the overlooked impact of capping-agent-derived contaminants in AOR and point to the deliberate incorporation of heterometallic modifiers as a viable strategy for advanced electrocatalyst design.
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ACS Applied Energy Materials
·
2026
·
IF 5.5
Lu Zhao,Yulong Qin,Chaoqun Chang,Xiqin He,Qi An,Yihe Zhang
The development of efficient and durable oxygen evolution reaction (OER) catalysts capable of operating at large current densities remains a critical challenge for renewable-energy technologies. Here, we report a Mo-doped FeCoNiCu high-entropy alloy (HEA) electrocatalyst that achieves enhanced OER activity and stability through high-valence Mo-induced lattice oxygen activation. The designed FeCoNiCuMo HEA nanoparticles exhibit low overpotentials of 340 mV at 100 mA cm–2, along with stability exceeding 650 h in alkaline media. Systematic studies reveal two key roles of Mo doping. It facilitates surface reconstruction by promoting lattice oxygen depletion and adsorbed oxygen generation. Meanwhile, it modulates the electronic structure of Ni sites to favor the formation of highly active β-NiOOH phases with shortened Ni–O bonds, a behavior distinctly different from Mo-free analogues. Furthermore, the FeCoNiCuMo HEA-based flexible zinc-air battery (FZAB) delivers a peak power density of 80 mW cm–2 with stable charge–discharge operation. This work offers a promising strategy for utilizing high-valence dopants to tailor the oxygen evolution pathway of HEAs for potential applications in energy conversion devices.
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ANALYTICA CHIMICA ACTA
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2026
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IF 6.1
Yizeng Mu,Xixian Zhu,Xuebo Liu,Linxiu Dai
Phenolic pollutants, originating from petrochemical production, dyeing and domestic wastewater, are among the most persistent and toxic organic contaminants in aquatic systems. Their structural diversity and similar physicochemical properties often lead to overlapping signals in traditional detection methods, hindering accurate identification and quantification in real-world samples. Conventional spectroscopic, electrochemical, and colorimetric techniques offer fast response and high sensitivity but often struggle to distinguish structurally similar phenolics in complex mixtures. Therefore, developing sensing strategies that generate rich feature information and enable multidimensional recognition have become increasingly essential. Herein, we developed a fingerprinting sensing strategy based on an ultralow-loading Fe–Mo double-atomic site catalyst (DAC) coupled with H 2 O 2 and TMB. Compared with isolated Fe or Mo single-atomic sites, the Fe–Mo DAC exhibited markedly enhanced peroxidase-like activity, which is attributed to Mo-induced modulation of the electronic structure and oxidation state of Fe centers. This catalytic synergy enables broad detection ranges, high sensitivity, and ultralow limits of detection (LOD, 0.76 μM) for five representative phenolic compounds and their binary mixtures. Experimental and theoretical investigations reveal that the variation in LOD is governed by the phenols’ intrinsic oxidation energy barriers and reducing abilities. By integrating multiple linear and nonlinear spectral descriptors into a four-dimensional feature matrix, followed by PCA and LDA, the system achieved accurate high-dimensional discrimination of phenolic species. This work offers a rapid, sensitive, and robust method for identifying phenolic pollutants, enabling mixture discrimination, source tracing, and environmental monitoring. The approach also provides a generalizable framework for expanding nanozyme-based sensing toward complex chemical mixtures.
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高影响因子
Journal of Environmental Chemical Engineering
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2026
·Vol. 14
·期 3
·123061
·
IF 7.5
Yunfeng Jiang,Yingyu Ren,Di Wang,Yihai Wu,Lei Zheng,Jun Zhang,Wei Wei
The endothermic reverse water-gas shift (RWGS) reaction is one of the key routes for CO 2 valorization, however the conventional externally heated RWGS suffers from substantial energy losses due to the heating of non-reactive regions. The direct Joule heating inside a fixed-bed reactor concentrates heat within the catalyst bed, thereby significantly reducing overall energy consumption. Here, we report an electrified RWGS (eRWGS) process based on direct Joule heating of molybdenum-based conductive samples, which simultaneously serve as both the heating element and the active catalytic phase. Near-equilibrium CO 2 conversion up to 70.5% at 750 °C was obtained with complete selectivity to CO. The proposed eRWGS process achieved 26–60% energy savings compared with conventional external heating. Moreover, a CO production rate of 963 mmol·g cat −1 ·h −1 was achieved at space velocity of 336 000 mL·g cat −1 ·h −1 with input power of only 40 W. The system remained stable over 200 h with steady conversion, CO selectivity and electrical resistance. The obtained results demonstrated the direct Joule heating as a highly efficient and durable strategy for electrified CO 2 utilization, offering a scalable pathway towards renewable syngas production via electrified chemical processes.
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Inorganic Chemistry Frontiers
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2026
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IF 6.2
Xiaowen Zhang,Qi Lei,Lixiang Wang,Qingge Feng,Qihua Liang
Xylene poses a threat to environmental and public health due to its neurotoxicity and strong irritancy, necessitating the development of efficient trace detection technologies. However, existing metal oxide semiconductor-based xylene sensors tend to have drawbacks such as high detection limits, insufficient response, poor humidity resistance, and susceptibility to cross-interference from aromatic compounds. In this study, Mo-doped nickel oxide nanofibers with varying doping ratios were fabricated by combining a facile electrospinning process with thermal treatment, and their gas-sensing properties were systematically evaluated. The results demonstrate that the sensor with a Mo doping concentration of 12.5 at% exhibited the maximum response to 20 ppm xylene at 265 °C (S ≈ 120.9), an ultra-low detection limit of 20 ppb, excellent selectivity, outstanding humidity resistance, and long-term stability. The improvement in sensing performance primarily stems from the modulation of valence state distribution in nickel oxide by aliovalent molybdenum doping. This process improves charge transfer efficiency and increases oxygen vacancy concentration. Additionally, the incorporation of Mo significantly enlarges the specific surface area and increases the quantity of micropores and mesopores. These factors collectively optimize the activity of surface chemisorbed oxygen, thereby markedly improving gas-sensing reaction efficiency. In situ Fourier transform infrared analysis reveals the surface oxidation reaction process and final reaction products of xylene. This work provides a feasible material strategy for developing high-performance xylene gas sensors, demonstrating promising potential for applications in trace xylene detection.
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Advanced Sustainable Systems
·
2026
·Vol. 10
·期 2
·e01682
·
IF 5.6
Handuo Fu,Ke Fang,Shenhui Ma,Lin Wang,Yuyu Bu
In theory, the utilization of a Z-scheme photogenerated carrier transport system has the potential to significantly enhance the photogenerated voltage for photoelectrochemical overall water splitting. However, thus far, there have been no previous reports on such phenomena with silicon-based semiconductor photoelectrodes. In this study, we fabricated an n-Si/Pt/Mo-doped BiVO 4 (Mo: BVO) sandwich-like film with an intermediate carrier transfer layer to prepare a silicon-based photoelectrode with an indirect Z-scheme system. Additionally, by leveraging the lattice distortion effect over Mo: BVO, we increased the fusion ability of the sandwich-like interface between different substances. For the first time, we achieved generation of anodic displacement current via negative voltage (−0.57 V (vs. RHE)), resulting in a photocurrent density of 1.56 mA/cm 2 and a photogenerated voltage five times higher than that of the n-Si/Mo: BVO structure. Through combining experimental approaches with theoretical calculations, it has been confirmed that this realization is attributed to the contribution of the transport process within the Z-scheme system in the n-Si photoelectrode. Furthermore, milliampere-level photocurrent under negative bias was observed for the first time on an n-Si photoelectrode, providing a novel approach for constructing silicon-based photoelectrodes for overall water splitting.
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JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2026
·
IF 9.6
Qing Xi,Huimin Yan,Fangxia Xie,Rui Li,Jianxin Liu,Caimei Fan,Zhixin Jin,Hongwei Wang
A directional photogenerated electron transfer channel from ZnIn 2 S 4 to Mo 2 TiC 2 -Ru was formed in ZnIn 2 S 4 /Mo 2 TiC 2 -Ru. • The interface electronic delocalization effect between Ru nanoclusters and Mo 2 TiC 2 synergistically optimizes the water dissociation and hydrogen evolution sites. • ZnIn 2 S 4 /Mo 2 TiC 2 -Ru exhibits excellent photocatalytic hydrogen evolution activity under both visible light and natural light conditions. The photocatalytic hydrogen evolution (PHE) rate on ZnIn 2 S 4 is severely limited by the low utilization of photogenerated electrons and the sluggish reaction kinetics. Driving the directional transfer of photogenerated electrons to the target site is crucial for enhancing the electron utilization efficiency and the PHE performance. Herein, this study rationally designed a ternary composite photocatalyst ZnIn 2 S 4 /Mo 2 TiC 2 -Ru C , in which Mo 2 TiC 2 -Ru C serves as an electron acceptor and efficient active site. The in-situ KPFM and Mott-Schottky results indicate that the establishment of interfacial electron transport channel accelerates the transfer of photogenerated electrons from ZnIn 2 S 4 to Mo 2 TiC 2 . Density functional theory (DFT) calculations verify the strong metal-support interaction (EMSI) and interfacial electron delocalization of Mo 2 TiC 2 -Ru C , which synergistically optimize the water dissociation at Ru nanocluster and the hydrogen evolution desorption at the Mo 2 TiC 2 terminal, promoting the efficient utilization of photogenerated electrons. Therefore, ZnIn 2 S 4 /Mo 2 TiC 2 -Ru C achieved a PHE rate of 6.15 mmol·g −1 ·h −1 under visible light, and demonstrated excellent potential for PHE application under natural light. This study provides a new paradigm for integrating electron transfer dynamics with active site engineering to improve the utilization efficiency of photogenerated electrons in the photocatalytic hydrogen evolution process. Download: Download high-res image (350KB) Download: Download full-size image
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JOURNAL OF POWER SOURCES
·
2025
·
IF 7.9
Liangbin Shao,Zhiqi Zhao,Na Xu,Yuanan Li,Haoze Li,Yuan Sheng,Shijie Zhang,Jianguo Wang
Deuterium (D 2 ) is a strategic material essential to the nuclear, fiber optic, and semiconductor industries. Proton exchange membrane (PEM) electrolysis of heavy water (D 2 O) is a robust and environmentally friendly method for D 2 production, but its energy efficiency is limited by the sluggish deuterium evolution reaction (DER). While being a promising DER catalyst, Pd still suffers from suboptimal DER kinetics due to strong adsorption of active deuterium (D∗). Herein, synergistic interactions between Pd and Mo/MoO x on carbon black are introduced to modulate the adsorption of active deuterium/hydrogen, leading to outstanding deuterium/hydrogen evolution performance. In 0.5 M D 2 SO 4 (H 2 SO 4 ), the optimal PdMo/C catalyst exhibits a record low overpotential of 19.1 mV (13.3 mV) at 10 mA cm −2 and a mass activity 10 times higher than that of commercial Pt/C. Furthermore, PdMo/C outperforms Pt/C in PEM electrolysis of D 2 O at 1.5–3.0 A cm −2 . X-ray photoelectron spectroscopy, DFT calculation, and D∗ underpotential deposition experiments show decreased electron density of Pd and reduced adsorption energy of D∗ in the presence of Mo that lead to enhanced intrinsic activity. This work offers valuable insights into the development of high-performance Pd-based electrocatalysts and demonstrates their potential in industrial production of D 2 .
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COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
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2025
·
IF 5.4
Peng Wang,Ruiliang Wang,Chenyu Gao,Lianlian Wang,Qianpeng Dong,Dianming Chu,Yan He,Wenjuan Bai
During the catalytic growth of CNTs, the ordered arrangement of catalysts is critical for maintaining their array structure. Unlike mechanisms that suppress nanoparticle migration via high catalyst density to enforce CNTs array growth, this study proposes a strategy involving surface engineering and nanoparticle nucleation to construct Mo-Fe-S/Al 2 O 3 heterogeneous ternary catalysts. This method modulates the electronic density of Fe sites to activate catalytic activity while constructing Mo-Fe-S sites on the catalyst surface to catalyze the growth of a "C network" (carbon pillars and CNTs), thereby forming CNTs arrays. On one hand, S and Mo weaken the interfacial interactions between Al 2 O 3 and inactive FeO x nanoparticles, promoting active particle nucleation; on the other hand, the "C network" grown via Mo-Fe-S constitutes the top part of the CNTs arrays, confining the internal nanoparticles (NPs) to enable vertically aligned growth of CNTs. Characterizations reveal NPs with diameters of ∼20 nm and symmetrically grown CNTs arrays with average diameters and heights of 18.21 nm and 10.10μm, respectively. This work provides an approach for the catalytic growth of CNTs arrays using supported catalysts, by forming a "C network" to suppress the entanglement of NPs during the catalytic growth of CNTs, thereby forming the CNTs array structure.
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