APPLIED CATALYSIS B-ENVIRONMENTAL
·
2025
·
IF 21.1
Jiaxing Wu,Panzhe Qiao,Pan An,Mengshen Zhang,Hao Xiu,Zeyu Song,Kadi Li,Yongpeng Cui,Yajun Wang,Wenqing Yao
Non-precious metal cocatalysts and interfacial charge transfer dynamics have long been recognized as critical research frontiers in photocatalytic hydrogen production via water splitting. In this study, we demonstrate a highly efficient Mo 2 C/CdS composite photocatalyst, where the construction of Mo-S chemical bonds significantly enhances interfacial charge transfer. Mo 2 C, as an effective non-noble metal cocatalyst, facilitates the efficient acceptance of photogenerated electrons from CdS. The formation of Mo-S bonds substantially boosts the hydrogen evolution activity. Remarkably, the optimized 7 wt% Mo 2 C/CdS composite achieves a photocatalytic hydrogen production rate of 19.94 mmol h -1 g -1 , representing a 51-fold enhancement compared to pristine CdS (0.39 mmol h -1 g -1 ). Furthermore, this hydrogen evolution rate surpasses that of the Pt/CdS composite by 296%. Synchrotron radiation analysis provides direct evidence for the formation of Mo-S chemical bonds at the interface. Additionally, DFT calculations reveal that the Gibbs free energy change for hydrogen adsorption on Mo 2 C/CdS is reduced by -0.23 eV, further confirming the favorable thermodynamics for hydrogen generation. This study not only validates Mo 2 C as a promising cocatalyst but also highlights its potential to replace the benchmark Pt in photocatalytic water splitting. The findings offer valuable insights by intentionally constructing interfacial chemical bonds to accelerate charge transfer and significantly enhance photocatalytic performance.
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高影响因子
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
·
2022
·Vol. 106
·期 2
·860-866
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IF 4.186
Weiliang Jin,Jie Pang,Qian Kou,Chuntao Ge,Hongmin Zhu,Geir Martin Haarberg,Saijun Xiao,Jun Zhang
This paper demonstrates the availability of electro-codeposition (i.e., the simultaneous occurrence of electrophoretic deposition of nanoparticles and electrochemical deposition of metal ions) in molten salts without the assistance of stirring of the bath. In molten NaCl–KCl–AlCl 3 –MoO 3 system containing TiB 2 nanoparticles at 710°C, the electro-codeposition of TiB 2 nanoparticles and Mo(VI) ions has been achieved, and a (Ti, Mo)B 2 coating has been prepared.
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高影响因子
ACS Nano
·
2019
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IF 13.903
Yuanjian Li,Chong Wang,Wenyu Wang,Alex Yong Sheng Eng,Mintao Wan,Lin Fu,Eryang Mao,Guocheng Li,Jiang Tang,Zhi Wei Seh,Yongming Sun
Rechargeable lithium–sulfur batteries have attracted tremendous scientific attention owing to their high energy density. However, their practical application is greatly hindered by the notorious shuttling of soluble lithium polysulfide (LPS) intermediates with sluggish redox reactions and uncontrolled precipitation behavior. Herein, we report a semiliquid cathode composed of an active LPS solution/carbon nanofiber (CNF) composite layer, capped with a carbon nanotube (CNT) thin film decorated with metallic Mo nanoclusters that regulate the electrochemical redox reactions of LPS. The trace amount (0.05 mg cm–2) of metallic Mo on the CNT film provides sufficient capturing centers for the chemical immobilization of LPS. Together with physical blocking of LPS by the compact CNT film, free diffusion of LPS is significantly restrained and the self-discharge behavior of the Li–S cell is thus effectively suppressed. Importantly, the metallic Mo nanoclusters enable fast catalytic conversion of LPS and regular deposition of lithium sulfide. As a result, the engineered cathode exhibits a high active sulfur utilization (1401 mAh g–1 at 0.1 C), stable cycling (500 cycles at 1 C with 0.06% decay per cycle), high rate performance (694 mAh g–1 at 5 C), and low self-discharge rate (3% after 72 h of rest). Moreover, a high reversible areal capacity of 4.75 mAh cm–2 is maintained after 100 cycles at 0.2 C for a cathode with a high sulfur loading of 7.64 mg cm–2. This work provides significant insight into the structural and materials design of an advanced sulfur-based cathode that effectively regulates the electrochemical reactions of sulfur species in high-energy Li–S batteries.
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高影响因子
CERAMICS INTERNATIONAL
·
2026
·
IF 6
Tao Wang,Jian Zou,Jun Yang
A series of molybdenum (Mo) and cerium (Ce) co-doped Y 2 Zr 2 O 7 inorganic cool pigments were synthesized via a high-temperature solid-state reaction method. Substitution of Zr by Mo introduces interstitial oxygen into the lattice, leading to lattice expansion while enhancing the near-infrared reflectance of the pigments. Mo coexists in the form of Mo 6+ and Mo 5+ ions, with the yellow coloration primarily originating from Mo 5+ . The lattice expansion induced by the incorporation of larger Ce ions suppresses the formation of interstitial oxygen, thereby promoting an increase in Mo 5+ content, which results in a higher b* value while maintaining high near-infrared reflectance. The optimized composition (Y 1.55 Ce 0.45 Zr 1 Ce 0.65 Mo 0.35 O 7 ) exhibits the following chromatic parameters: L* = 88.26, a* = -3.19, b* = 55.15, and R NIR =93.68%. Furthermore, the simulation experiment revealed that the surface temperature of the coating based on the as-prepared pigment is 16.3 °C lower than that of the cement coating and 11.4 °C lower than that of the commercial iron yellow coating, demonstrating excellent solar reflective performance.
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高影响因子
Journal of Materials Chemistry A
·
2026
·
IF 9.2
Hamza M. Haruna,Yanxiang He,Zhixiao Zhu,Hao Yang,Selvam Mathi,Guanhua Zhang,Zhongmin Wang,M. Sadeeq Balogun
Controlling phase evolution during nitridation is essential for creating active interfaces in multi-metal electrocatalysts. However, the nitridation pathways in complex systems such as Mo-Fe-Ni molybdates remain poorly defined. Herein, tuning the Fe contents in the Fe-Mo precursor directly governs ammonia activation and drives nitridation-induced reconstruction. Increasing Fe concentration promotes NH3 decomposition, shifting the product from an oxide-rich phase (N-doped MoO2-FeMoO4-NiMoO4-NiO, denoted N/MoO2-MoFeNi-O) to a nitride-dominated heterostructure comprising MoO2, Mo2N, FeN and Ni4N (N/MoO2-MoFeNi-N). The optmized N/MoO2-MoFeNi-N nitride-oxide interfaces enhance electrical conductivity, optimize oxygen-intermediate adsorption, and improve corrosion resistance. As a result, N/MoO2-MoFeNi-N exhibits superior oxygen evolution performance in both alkaline freshwater and seawater, requiring overpotentials of only 309/392 and 334/499 mV to reach 500 and 1000 mA cm-2, respectively. DFT calculations identify the MoO2@FeN interface is the most active site with the lowest energetic barrier for the potential-limiting step. The catalyst also demonstrates efficient oxygen reduction activity, enabling high-performance zinc-air batteries with open-circuit voltage of 1.33 V, peak power density of 84.2 mW cm-2, and stable cycling over 140 h. This work clarifies the role of Fe in directing nitridation pathways, providing a rational route to construct durable, interface-rich nitride-oxide architectures for advanced oxygen atalysis.
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高影响因子
TOPICS IN CATALYSIS
·
2026
·
IF 3.7
Wu Jundao,Huang Zeai,Zhang Fan,Liu Jiayi,He Yi,Hu Wei,Tang Xiao,Zairov Rustem,Sinyashin Oleg G.
The substantial presence of nitrogen oxides (NO and NO 2 ) in outdoor environments detrimentally impacts natural ecosystems and exerts significant influence on urban climates. Conventional NO x treatment methods frequently suffer from challenges such as harsh reaction conditions and high energy consumption. Consequently, the development of advanced photocatalytic systems to efficiently degrade NO x while minimizing the formation of toxic byproducts represents a critical challenge in environmental catalysis. In this study, a novel ternary composite material (5% Mo-CN/InP-NBOC) was constructed via hydrothermal synthesis and surface modification strategies, achieving 42% NO oxidation efficiency under visible light irradiation with a mere 0.9% NO 2 generation rate. This performance demonstrates efficient photocatalytic NO oxidation while effectively suppressing NO 2 production. Systematic characterization techniques, including XRD, TEM, and XPS, confirmed the successful integration of InP quantum dots (5–10 nm) and amorphous Mo-CN onto NBOC nanosheets, forming an intimate heterojunction structure. PL and ESR analyses revealed that Mo-CN enhances charge carrier separation and governs the NO oxidation process through the activation of dual free radical pathways (⋅O 2 − and ⋅OH). This work establishes a “quantum dot-primary catalyst-cocatalyst” ternary collaborative design paradigm, providing experimental evidence and theoretical models to address the challenges of synergistic optimization among activity, selectivity, and stability in photocatalytic NO x treatment.
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高影响因子
CARBON
·
2026
·
IF 12.7
Jia-yuan Tian,Feng Lin,Jing-jing Wu,Pei Ma,Xiao-lin Xue,Yu-long Ma,Yong-gang Sun
Lignin is the most abundant renewable organic aromatic compound carbon source in nature, and it is of great significance to convert it into high-value fine chemicals. However, achieving this goal requires regulating the selectivity of the lignin hydrodeoxygenation (HDO) reaction is crucial to breaking the competitive relationship between C–O bond cleavage and aromatic ring saturation. This study proposes oxygen-philic-hydrogen activation dual-functional site synergy strategy, using NiCoAl-LDH as the precursor, and constructing a NiCoMoFeAlO x multi-metal oxide catalyst by introducing Mo and Fe. Experiments and DFT calculations show that the catalyst achieves precise coupling of depolymerization and deoxygenation through a tandem synergy mechanism, the NiCo sites efficiently activate H 2 to supply active hydrogen, the oxygen-philic Mo sites and Fe selectively adsorb and cleave C–O bonds, and the intermetallic synergy effectively inhibits excessive hydrogenation of aromatic rings, directing the reaction path to phenolic products with retained aromatic rings. In the real lignin HDO reaction, the catalyst achieves a liquid yield as high as 78% and 64.9% selectivity for C 6+ cyclohexanol. This research provides a new paradigm for the rational design of multi-functional catalysts and the realization of directed conversion of lignin. Download: Download high-res image (244KB) Download: Download full-size image
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JOURNAL OF ALLOYS AND COMPOUNDS
·
2025
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IF 6.3
Rui Ming,JingJing Du,Shaobo Ye,Zhao Liang,Qiao Liu,Xuyang Lu,Qiliang Wei,Weiyou Yang,Qing Shi
The design of efficient and cost-effective bifunctional catalysts to replace precious metal-based catalysts remains a critical challenge in electrocatalytic water splitting. Herein, we report a Mo-Fe co-doped Ni 3 S 2 nanorod arrays grown on a nickel-iron foam substrate via a facile hydrothermal synthesis. This dual metal-doped nanorod structure synergistically modulates the electronic structure while maximizing accessible active sites, endowing the Mo-Fe-Ni 3 S 2 electrode with exceptional bifunctional activity for the hydrogen evolution reaction (HER) and oxygen evolution reaction (OER) in alkaline media. The resulting Mo-Fe-Ni 3 S 2 electrode requires only 180 mV for HER and 275 mV for OER at a current density of 100 mA cm −2 , coupled with long-term stability exceeding 50 h. Remarkably, when integrated into a single-stack cell for practical application, the Mo-Fe-Ni 3 S 2 electrode exhibits outstanding performance, achieving a current density of 100 mA cm −2 at a potential of 1.87 V and showing no potential degradation after 100 hours of continuous operation at 100 mA cm −2 . This work not only presents a high-performance bifunctional catalyst but also provides fundamental insights into the design of advanced electrocatalysts through rational heteroatom doping strategies.
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高影响因子
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
·
2021
·
IF 8.067
Weiqiang Hu,Tao Sun,Chenxi Liu,Liming Yu,Tansir Ahamad,Zongqing Ma
The ultrafine Mo-Y 2 O 3 composite powders were successfully synthesized by innovative freeze-drying method. Consequently, the freeze-dried Mo-Y 2 O 3 composite powders with high sintering activities possess an average grain size of 54 nm. After low temperature sintering at 1600 °C, the Mo-Y 2 O 3 alloys maintaining a high density (99.6 %) have the finest grain size (620 nm) comparing with available literature about oxide dispersion strengthened molybdenum alloy (ODS-Mo). The oxide particles remain their small size (mainly <50 nm) within Mo grains and at Mo grain boundaries. Furthermore, the Y 5 Mo 2 O 12 particles were firstly observed within Mo matrix, and its formation can absorb nearby oxygen impurities, which involves the purification of Mo matrix. The mechanical properties show that Mo-Y 2 O 3 alloy possess a high hardness of 487 ± 28 HV 0.2 , a high yield strength of 902 MPa, a high compressive strength of 1110 MPa, respectively. Our work suggests that freeze-drying and subsequent low temperature sintering can shed light on the preparation of ultrafine ODS-Mo alloys with high performance.
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高影响因子
Journal of Materials Research and Technology-JMR&T
·
2024
·
IF 6.2
Xinyue Mao,Qingnan Meng,Sifan Wang,Shiyin Huang,Mu Yuan,Yuting Qiu
To effectively inhibit the thermal oxidation and thermal failure of diamonds when working in a high–temperature aerobic environment, a Mo–B–C coating was designed and prepared to protect diamonds from oxidation. A two–step synthesis method was used to form coatings with different B contents on diamonds by adjusting the reaction temperature, and the oxidation kinetics and oxidation mechanism of the coated diamonds were investigated in the temperature range of 700°C–1200 °C. The mechanism of diamond protection in this study was the preferential oxidative sacrifice of Mo–B–C coatings to form a stable oxide layer on the diamond surface. For low–B coatings, the four stages of coating oxidation, low-temperature volatilization of MoO 3 , stable protection by B 2 O 3 , and rapid evaporation of B 2 O 3 were experienced sequentially with an increase in temperature. For high–B coatings, the preferential self-healing flow of B 2 O 3 not only inhibited the volatilization of MoO 3 but also provided a reducing environment for MoO 3 to generate high melting–point MoO 2 and Mo 2 C, which resulted in the formation of a double synergistic protective oxide layer and greatly enhanced the oxidation resistance of diamonds. Meanwhile, the protection of the oxide layer also maintained the compressive strength of diamonds under a high–temperature oxidizing atmosphere, indicating its excellent high temperature applicability. This study provides an effective method for enhancing the high–temperature oxidation resistance and strength of diamonds, which can be effectively applied to the extreme environmental use of diamond tools.
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高影响因子
Journal of Environmental Chemical Engineering
·
2026
·Vol. 14
·期 3
·123212
·
IF 7.5
Zhiyu Wang,Mingyuan Liu,Binying Gao,Linqiang Mao
The recovery of high value metals from spent hydrodesulfurization catalysts serves as a crucial strategy not only for mitigating environmental pollution but also for alleviating resource shortages. Herein, a hydrated deep eutectic solvent (P-DES) composed of betaine hydrochloride and p-toluenesulfonic acid was developed to selectively leach valuable metals from spent catalysts and enable their stepwise recovery. Under optimal conditions (BeCl:PTSA = 1:2, 45 wt% H 2 O, 90 ℃, 10 g L −1 , 180 min), leaching efficiencies of 90.03% for Ni, 98.60% for Mo, and 94.98% for V were achieved, while Al dissolution was suppressed to 9.82%. Density functional theory (DFT) and leaching kinetics both indicate an apparent metal release order of Mo > V > Ni, which is also consistent with the observed order of leaching efficiency (Mo > V > Ni). Independent Gradient Model based on Hirshfeld partitioning (IGMH) results show that P-DES features a Cl - -centered hydrogen-bond network, which provides a proton-active and chloride-containing microenvironment. During leaching, H + breaks M-O bonds, V(V) is reduced predominantly to V(IV) with minor Mo(VI) reduction, and the dissolved metals are stabilized as chloro or oxychloro species. In the subsequent recovery process, V(IV) was selectively precipitated at pH 5.2 within 3 min and calcined at 450 ℃ to produce V 2 O 5 . Mo was then extracted using an N235/2-ethylhexanol system and recovered as MoO 3 after calcination at 550 ℃. Finally, Ni was precipitated from the raffinate at pH 12.2 as Ni(OH) 2 . The recovery rates of V, Mo and Ni were obtained at 93.36, 97.36, and 89.52%. This work presents an integrated, green hydrometallurgical route for the comprehensive recycling of spent HDS catalysts.
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高影响因子
Asian Journal of Organic Chemistry
·
2026
·Vol. 15
·期 5
·e70423
·
IF 2.3
Zhiqi Song,Xu Jia,Xiulian Wang,Jiaqi Zhang,Liuxue Zhang,Jiaolong Qiao,Lidan Yang
In order to enhance the separation efficiency of charge carriers and thereby increase the rate of photocatalytic hydrogen evolution, a novel heterojunction composite material, Mo/Co-MOF@g-C 3 N 4 , was synthesized by loading flower-like Mo/Co-MOF onto two-dimensional ultrathin g-C 3 N 4 nanosheets through the regulation of the energy band alignment position of the materials. The construction of this heterojunction was designed to modulate the carrier transfer pathway, thereby addressing the poor adsorption capacity and sluggish migration of photogenerated electron–hole pairs in photocatalytic processes. This modification led to a significant enhancement in photocatalytic hydrogen evolution efficiency. Experimental results demonstrated a remarkable hydrogen evolution rate of 2.96 mmol·g − 1 ·h − 1 for the composite material. This performance represents an 8-fold enhancement compared to the rate of 0.37 mmol·g − 1 ·h − 1 observed for the pristine ultrathin g-C 3 N 4 . Furthermore, the composite exhibited excellent stability, maintaining its high activity without significant degradation over multiple cyclic testing runs. The Mo/Co-MOF@g-C 3 N 4 composite demonstrates both high hydrogen production yield and robust stability in photocatalytic water splitting reactions. This work presents a promising and novel candidate for future research in photocatalysts for hydrogen generation.
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