ACS Sustainable Chemistry & Engineering
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2026
·Vol. 14
·期 30
·13403-13416
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IF 7.6
Zhang Jun,Zhang Long,Zhi Fupeng,Zheng Dong,Shi Guangyue,Hou Wei,Jin Zishan,Wu Kaixuan,Yuan Doudou,Cao Lei
Efficient recovery of molybdenum(VI) and the sustainable utilization of metal-loaded spent adsorbents are important for reducing secondary pollution and promoting circular chemistry. A sodium alginate/poly(dimethylacrylamide) semi-interpenetrating polymer network hydrogel (SSP) was developed for Mo(VI) adsorption and catalytic valorization. SSP showed a Mo(VI) adsorption capacity of 108.2 mg g –1 at pH 3 and 298 K, reached equilibrium within 120 min, and retained 86.8 mg g –1 after five cycles. Mechanical testing, 10-fold scale-up preparation, and simulated high-chloride wastewater adsorption supported its practical potential. The spent Mo-loaded SSP was directly used as a supported Mo catalyst for the oxidative synthesis of 2-substituted benzimidazoles without regeneration or post-modification. Using ethanol and H 2 O 2 , 2-phenylbenzimidazole was obtained in 90.2% yield, and substituted products were obtained in 47.2-93.5% yields. Apparent TON and TOF values were 4.44–8.80 and 1.48–5.86 h –1 , respectively, with Mo leaching of approximately 0.027%. DPBF trapping and TEMP-EPR indicated that singlet oxygen was the dominant reactive species. This work establishes a Mo(VI)-specific adsorption-to-catalysis closed-loop system integrating metal removal, immobilization, and value-added organic synthesis.
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BIOMASS & BIOENERGY
·
2026
·
IF 7
Yingying Zhu,Zhong Wang,Jinze Li,Yumeng Ren,Chao Zeng,Geng Chen
Mg-Zn-Fe LDH was anchored on phosphate-modified reed straw biochar. • Mg 1 Zn 1 Fe-LDH@PBC reached a surface area of 394.466 m 2 g −1 . • The adsorbent efficiently removed RhB, MO, and OTC from water. • Maximum RhB adsorption capacity reached 659.2 mg g −1 . • Removal efficiency remained around 70% after five cycles. Sustainable conversion of waste biomass into high-performance adsorbents provides an effective route for organic wastewater remediation. In this study, phosphate-modified reed straw biochar-supported layered double hydroxide composites (LDH@PBC) were synthesized via a facile co-precipitation method. Binary and ternary LDHs containing Mg 2+ , Zn 2+ , and Fe 3+ were constructed on the biochar matrix, and their adsorption performance toward rhodamine B (RhB), methyl orange (MO), and oxytetracycline (OTC) was systematically evaluated. The optimized Mg 1 Zn 1 Fe-LDH@PBC exhibited a well-developed porous structure, abundant surface functional groups, and the highest specific surface area of 394.466 m 2 g −1 . Owing to the synergistic effects of phosphate-modified biochar and Mg-Zn-Fe LDH nanosheets, the composite maintained stable adsorption efficiency over a broad pH range. The optimized Mg 1 Zn 1 Fe-LDH@PBC achieved a maximum experimental RhB adsorption capacity of 659.2 mg g −1 under the optimized dosage condition. In contrast, Langmuir isotherm fitting gave theoretical maximum monolayer adsorption capacities of 944.898, 696.552, and 303.146 mg g −1 for RhB, MO, and OTC at 298 K, respectively. Kinetic and isotherm analyses suggested that the adsorption process may be associated with multiple interactions, including electrostatic attraction, ion exchange, hydrogen bonding, π–π interactions, and possible surface complexation. In addition, the removal efficiency remained around 70% after four adsorption–desorption cycles, indicating favorable reusability. This work highlights a promising biomass-derived LDH/biochar adsorbent for efficient and sustainable removal of multiple organic pollutants from water.
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COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
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2026
·
IF 5.4
Zhongjian Wang,Guojun Lv,Jingbo Wang,Zhuoran Zhang,Yuhan Jiang,Yangbin Shen
The strong d-p covalent interaction of Mo-P bonds was obtained. • Lattice doping of P into MoS 2 formed Mo-P bonds in 0.2P-MoS 2. • 0.2P-MoS 2 achieved 91.7% tetracycline degradation under LED irradiation. Antibiotic pollution in water calls for sustainable remediation approaches such as photocatalysis. Despite its promising structure and visible-light response, MoS 2 is hindered by rapid carrier recombination, which severely restrict its photocatalytic efficiency. Herein, we reported a strategy of lattice phosphorus doping into MoS 2 to modulate the electronic structure, broaden visible-light absorption, and facilitate charge separation and migration. The optimized 0.2P-MoS 2 achieved 91.7% degradation of tetracycline (30 mg/L) within 80 min under low-power LED irradiation, with a reaction rate constant 5.5-fold higher than pristine MoS 2 . The superior photocatalytic degradation activity for 0.2P-MoS 2 arises from the narrowest band gap (1.21 eV) and accelerated charge carrier migration originated from the strong d-p covalent interactions in the generated Mo-P bonds. Radical scavenging experiments and electron paramagnetic resonance characterizations identified superoxide radicals (•O 2 − ) and holes (h⁺) as the dominant reactive species. Furthermore, possible photocatalytic degradation pathways of tetracycline were proposed over the 0.2P-MoS 2 catalyst. Moreover, the 0.2P-MoS 2 catalyst maintained high activity after five consecutive cycles, demonstrating its excellent stability. This work offers an electronic structure engineering perspective for rational design of MoS 2 -based photocatalysts and provides a viable approach for antibiotic degradation under low-power light sources, holding substantial promise for environmental remediation. Download: Download high-res image (187KB) Download: Download full-size image Strong d-p orbital hybridization of Mo-P bonds within phosphorus lattice-doped MoS 2 boosts visible-light photocatalytic degradation of tetracycline into CO 2 and H 2 O.
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ACS Sensors
·
2026
·
IF 10.9
Jie Hu,Yong Chen,Xuni Yin,Qi Zeng,Chang Chen,Jiu Yin
Although metal oxide semiconductors are promising candidates for practical disease diagnosis based on H2S detection, achieving high sensitivity and a low detection limit remains a considerable challenge. In this work, Ru-functionalized Mo-doped WO3 (Ru@Mo-WO3) nanosheets were successfully synthesized via a simple hydrothermal process followed by annealing and chemical reduction. The H2S sensing performances of all WO3-based sensors were systematically investigated. The optimized Ru@Mo-WO3 sensor exhibited a remarkable response of 120 to 5 ppm H2S at the optimal operating temperature, which was approximately 30 times higher than that of pristine WO3. Moreover, the Ru@Mo-WO3 sensor demonstrates short response times, excellent H2S selectivity, and remarkable long-term stability with a low detection limit (7.9 ppb). Comprehensive experimental analyses and density functional theory (DFT) simulations reveal that the significant enhancement in sensing performance originates from the synergistic effects of Mo doping and Ru sensitization. Meanwhile, a wireless gas-detection device based on the as-fabricated Ru@Mo-WO3 gas sensor was developed to achieve real-time monitoring of oral H2S for noninvasive oral hygiene assessment. This study offers a promising strategy for the rational design of high-performance WO3-based H2S sensors.
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Energy & Environmental Materials
·
2026
·
IF 13.8
Guomeng Xie,Ziqin Xu,Delai Qian,Ruiwu Li,Qingsong Hua,Shun Lu,Haitao Fang
Single-crystalline Ni-rich cathodes are promising candidates for high-energy density lithium-ion batteries due to their grain-boundary-free structures, which effectively reduce structural degradation associated with intergranular microcracks often seen in polycrystalline materials. However, these single-crystalline cathodes face challenges such as slow Li + diffusion kinetics, significant parasitic interface reactions, and irreversible phase transitions at elevated cut-off voltages, which can lead to the formation of intragranular cracks and impede their practical usage. In this study, the single-crystalline LiNi 0.8 Co 0.15 Al 0.05 O 2 (NCA) was synthesized by stripping grain boundaries from polycrystalline NCA through Mo/Nb dual doping. The Mo doping near the grain surface significantly reduces parasitic interface reactions, while Nb doping within the bulk of grains helps to improve harmful irreversible phase transitions. The synergistic effect of Mo/Nb dual doping in single-crystalline NCA effectively suppresses intragranular crack formation during prolonged cycling at high cut-off voltages. Therefore, the Mo/Nb co-doped cathode demonstrates enhanced structural stability and electrochemical activity, achieving an impressive capacity retention of 82.4% after 500 cycles at 1 C between 2.8 and 4.7 V, surpassing both polycrystalline and single-crystalline NCA doped only with Mo or Nb. This work provides a new strategy to synthesize single-crystalline NCA combined with effective dual doping, advancing the development of high-energy density lithium-ion batteries.
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Green Energy & Environment
·
2026
·
IF 16.7
Zihang Wang,Yujing Wu,Jinliang Yan,Zhiyu Li,Hui Zhou,Peng Fu
Biodiesel, a renewable and carbon-neutral fuel, offers a sustainable alternative to petroleum diesel. However, its widespread application is hindered by the need for energy-intensive deoxygenation processes that often degrade the carbon backbone of fatty acid esters. This study presents a non-noble NiMo/HBeta bifunctional catalyst for the complete conversion of methyl stearate under mild conditions (190 °C), achieving 92.53% selectivity toward C18 alkanes and a high HDO/DCO (hydrodeoxygenation/(decarboxylation + decarbonylation)) ratio of 12.38, outperforming previously reported catalytic systems. Mechanistic insight reveals that atomically dispersed Ni δ+ –MoO x sites enable directed electron transfer from Ni to Mo. This creates a synergistic interface where Ni activates H 2 while Mo polarizes the C=O bond, lowering the barrier of the HDO pathway to 1.76 eV and kinetically favoring carbon-retentive deoxygenation. Concurrently, Mo reshapes the acid properties by suppressing strong Brønsted sites, establishing a Lewis-acid-dominated microenvironment that selectively cleaves C–O bonds while inhibiting C–C scission. This work elucidates how interfacial electronic synergy and tailored acidity cooperatively steer reaction pathways, offering a design principle for efficient biomass upgrading under mild conditions.
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JOURNAL OF ALLOYS AND COMPOUNDS
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2026
·
IF 6.7
Feng Jiang,Chenchen Li,Xiang Ling
Molybdenum (Mo) is a promising structural material for ultra-high temperature applications, but its catastrophic oxidative degradation remains a critical bottleneck. Conventional single-layer silicide coatings often fail prematurely due to either weak interfacial adhesion (spallation) or insufficient long-term structural stability (cracking). To overcome these limitations, a novel dual-layer composite coating was developed in this study. An inner Mo-Si diffusion layer (∼90 μm) was first fabricated by pack cementation process to ensure robust metallurgical bonding with the Mo substrate. Subsequently, an anti-oxidative outer layer (∼98 μm) containing MoSi 2 , boron and quartz was deposited using slurry sintering technique. Isothermal oxidation tests revealed that the composite coating exhibited excellent protective performance at 1500 °C in air, with only minimal mass loss of 0.178 mg/cm 2 after 9 h. Microstructural analysis demonstrated that bidirectional Si diffusion dynamically transformed the coating into a highly stable gradient structure of SiO 2 -Mo 5 Si 3 -MoSi 2 -Mo 5 Si 3 during high-temperature exposure. The superior oxidation resistance was attributed to a synergistic anti-oxidation mechanism: the inner layer physically anchored the coating to prevent spallation, while the outer layer continuously generated a B 2 O 3 -fluxed fluid borosilicate glass phase that effectively sealed microcracks and pores. This work provides an effective architectural design strategy for developing high-performance oxidation-resistant coatings on refractory metals in ultra-high temperature environments.
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CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Zifan Wu,Lu Chen,Yacong Deng,Fengyu Tian,Guangzheng Sun,Yuting Qiu,Yichuan Li,Yuan Pan,Bin Liu,Bin Dong,Yongming Chai
Lignin-derived phenols, with their high energy density and rich aromatic structure, are potentially high-quality feedstocks for the production of aviation fuel-range cycloalkanes. Herein, we fabricated a Ni Mo alloy catalyst anchored on graphitic carbon nitride (g-C 3 N 4 ) coated γ-Al 2 O 3 (10Ni-5Mo/CN@γ-Al 2 O 3 ), which could completely hydrodeoxygenate various lignin-derived phenols into cycloalkanes under mild conditions. 10Ni-5Mo/CN@γ-Al 2 O 3 significantly catalyzed the hydrodeoxygenation of lignin oil at 240 °C under 3 MPa H 2 for 8 h, achieving a deoxygenation degree of 96.5 % and a high propylcyclohexane selectivity (41.8 %), and the resulting products met the requirements for aviation fuels. The study results showed that electron transfer within Ni Mo alloys and the strong interaction between g-C 3 N 4 and surface anchored Ni Mo alloys in 10Ni-5Mo/CN@γ-Al 2 O 3 facilitated the dissociation of H 2 into active hydrogen to hydrogenate the aromatic rings. Meanwhile, the formation of oxygen vacancies enhanced the adsorption and activation ability of the catalyst for oxygen-containing substrates, which was beneficial for the demethoxylation and dehydroxylation reactions. This work provides a new strategy for constructing supported non-noble metal catalysts for the hydrodeoxygenation of lignin oil into aviation fuels.
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ACS Sustainable Chemistry & Engineering
·
2026
·
IF 7.6
Jiaqi Cheng,Junting Yang,Ge Qi,Yuwei Ma,Jinxiao Bao,Qingchun Wang
This work presents a novel strategy for improving the anti-CO poisoning performance of Pt-based catalysts by coupling the electronic states of Mo 4d and Ce 4f to modulate the Pt electronic structure. The introduction of Mo into CeO2 creates a composite support (Mo-CeOx) that induces electron redistribution at the Pt/CeO2 interface, inducing the electronic structure modulation of Pt, thereby influencing the Pt–CO interaction. This electronic tuning not only enhances Pt’s CO tolerance but also promotes charge transfer and improves catalyst stability. Density functional theory calculations and experimental data reveal that Mo doping decreases the formation energy of oxygen vacancies, facilitating Pt stabilization and the generation of active sites. The resulting Pt/Mo-CeOx/rGO catalyst exhibits significantly enhanced methanol oxidation reaction activity, with a mass activity 4.67 times higher than that of the undoped counterpart, alongside excellent CO poisoning resistance and long-term stability. This work introduces a new paradigm for designing highly efficient and durable Pt-based catalysts by leveraging electronic state engineering, offering a powerful approach for tackling CO poisoning in electrocatalysis.
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Nanoscale
·
2022
·Vol. 15
·期 1
·259-265
·
IF 8.307
Lin Tian,Zhenyang Chen,Tingjian Wang,Ming Cao,Xinhua Lu,Wenjing Cheng,Changchun He,Ju Wang,Zhao Li
Oxygen evolution reactions (OERs) are regarded as the rate-determining step of electrocatalytic overall water splitting, which endow OER electrocatalysts with the advantages of high activity, low cost, good conductivity, and excellent stability. Herein, a facile H2O2-assisted etching method is proposed for the fabrication of Mo-doped ultrathin Co9Se8@NiSe/NF-X heterojunctions with rich Se vacancies to boost electrocatalytic water oxidation. After step-by-step electronic structure modulation by Mo doping and Se vacancy engineering, the self-standing Mo-Co9Se8@NiSe/NF-60 heterojunctions deliver a current density of 50 mA cm−2 with an overpotential of 343 mV and a cell voltage of only 1.87 V at 50 mA cm−2 for overall water splitting in 1.0 M KOH. Our study opens up the possibility of realizing step-by-step electronic structure modulation of nonprecious OER electrocatalysts via heteroatom doping and vacancy engineering.
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APPLIED SURFACE SCIENCE
·
2022
·
IF 7.392
Jiahe Li,Weihong Wu,Rui Duan,Xue Bi,Weihua Meng,Jianzhong Xu,Hongqiang Qu
A molybdenum-based metal organic framework (Mo-MOF) and graphene oxide (GO) hybrid functionalized with boron-containing ionic liquid ([BMIM]BF 4 ) (GMB) was reported to effectively improve the fire safety and mechanical property of epoxy resin (EP). When 3 wt% GMB was added, the CO production rate, peak heat release rate and peak smoke release rate of EP composites decreased by 55.88%, 52.10% and 40.12%, respectively. The flame retardant mechanism was the combination of catalytic carbonization ([BMIM]BF 4 and Mo-MOF), physical barrier effect (GO) and gas phase dilution (H 2 O and NH 3 in gas production). Meanwhile, the incorporation of [BMIM]BF 4 endowed EP composites with excellent mechanical properties.
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Molecular Catalysis
·
2022
·
IF 5.089
Zhengting Xiao,Qingyang Li,Wentai Wang,Guangci Li,Guannan Lin,Xuebing Li,Song Chen
A Co-Mo sulfide catalyst with tube-like structure was prepared through a low-temperature pre-sulfurization process using rod-like CoMoO 4 as the precursor. The pre-sulfurization temperature greatly affected the total pore volume, the concentration of CoMoS species, the microstructure of (Co)MoS 2 slabs and the catalytic desulfurization activity. The increased temperature can promote the formation of hollow structure and the sulfurization degree of the precursor. It was found that the excessive temperature induced the Co atoms to form more isolated Co 9 S 8 species, hindering the formation of highly active CoMoS species. Therefore, appropriate temperature is more favorable to form the (Co)MoS 2 slabs with shorter length and higher stacking number, leading to more coordinatively unsaturated sites, especially the corner sites. According to the results of hydrodesulfurization reaction, the reaction rate of dibenzothiophene and the yields of liquid products are highly depended on the number of surface-active sites, which are mainly originated from the Type II CoMoS species. Moreover, the extended pre-sulfurization time can further improve the catalytic desulfurization activity of the catalyst at an appropriate pre-sulfurization temperature.
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