ACS Applied Nano Materials
·
2024
·
IF 5.3
Shuen Chen,Gengchang Lai,Xiaoyi Zhang,Xiaoxiao Feng,Liping Tong,Chenglong Peng,Xingchen He,Yang Li,Jiahong Wang
Phosphorus is an ideal anode material for high-rate lithium-ion batteries due to its high theoretical specific capacity and moderate operating potential. However, phosphorus undergoes tremendous volume expansion and low electrical conductivity during lithium storage, affecting its actual lithium storage performance. The formation of P–C bonds is an effective strategy to inhibit the volume expansion and maintain stable electrical contact between phosphorus and the current collector. Herein, high strength metal nanoparticles, such as molybdenum nanoparticles, are introduced into the ball milling process to reinforce P–C bonding and enhance the lithium storage performance. As a result, the BP/Mo/CNTs anode provides a high-rate capacity of 984 mAh g–1 at 8.0 A g–1 and high capacity retention of 90.3% after 300 cycles at 0.5 A g–1. To demonstrate the universality of this method, BP/W/CNTs nanocomposites were prepared by tungsten-assisted ball milling. This facile strategy provides a practical approach for the formation of abundant covalent bonds to improve the electrochemical performance of composites.
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SEPARATION AND PURIFICATION TECHNOLOGY
·
2025
·
IF 9
Yufeng Li,Guangshen Chen,Zhiyong Li,Pengfei Cheng,Zhang Zhang,Junming Liu
Photocatalytic reactions, such as H 2 production, CO 2 reduction, wastewater treatment, have emerged as highly promising technological solutions for addressing energy and environmental challenges. However, sedimentation-induced low photocatalytic activity and inconvenient recycling limit their practical applications. Here, we have developed magnetic-phototactic microbial robots for enhancing photocatalysis effect and directional recycling used/inactive photocatalyst. We first synthesized a magnetic g-C 3 N 4 /Fe 3 O 4 photocatalyst with enhanced visible light absorption, and then functionalized positively phototropic microalgae with the magnetic composite, which is denoted as magnetic-phototactic microbial robots. The photocatalytic efficiency of magnetic-phototactic microbial robots has substantially augmented up to 320% than that of g-C 3 N 4 /Fe 3 O 4 . Moreover, the magnetic-phototactic microbial robots can autonomously carry catalysts to bright underwater environment to efficiently utilize solar light for photodegradation, as well as exhibit highly efficient targeted recovery and recyclability. The highly efficient, environmentally friendly, and recyclable magnetic-phototactic microbial robot is expected to make great impacts on energy and environment fields.
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KOREAN JOURNAL OF CHEMICAL ENGINEERING
·
2025
·
IF 3.2
Rao Qian,Li Hui-qiang,Yang Ping,Guo Ziou
Mo 2 C@Fe 3 O 4 and three kinds of MO 2 -doped Mo 2 C@Fe 3 O 4 were successfully fabricated as the Mo 2 C@TiO 2 @Fe 3 O 4 , Mo 2 C@MoO 2 @Fe 3 O 4 and Mo 2 C@CeO 2 @Fe 3 O 4 particles for the degradation of 2-methyl-4-isothiazolin-3-one and 1-hydroxy-1,1-diphosphonoethane in a three-dimensional electro-Fenton system. The catalyst particles showed an enhancement for the catalytic activity in the system. Furthermore, the Mo 2 C@CeO 2 @Fe 3 O 4 particles exhibited superior activity for 2-methyl-4-isothiazolin-3-one and 1-hydroxy-1,1-diphosphonoethane degradation compared to the other two particles. Based on the characterization of the synthesized particles, leaching concentration of Fe 2+ , generation of \({H}_{2}{O}_{2}\) , \(\bullet OH\) , \({O}_{2}^{\bullet -}\) , the reasons for the difference in pollutant degradation performance among the three type particles were comprehensively analyzed. At last, some important experimental parameters, such as particles dosage, current density and aeration intensity, which would obviously affect MIT and HEDP degradation performance were studied. Using the Mo 2 C@CeO 2 @Fe 3 O 4 as catalytic particles, optimal 2-methyl-4-isothiazolin-3-one and 1-hydroxy-1,1-diphosphonoethane degradation rates were 97.2% and 73.8% with 0.5 g of particle dosage, 97.22% and 73.75% with 300 mA of current density, and 97.28% and 73.71% with 0.1 L min −1 of aeration intensity.
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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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Energy & Environmental Science
·
2025
·
IF 30.8
Hongyu Qin,Ao Liu,Kefeng Ouyang,Sheng Chen,Shubing Wei,Yan Huang
Sluggish diffusion rate and exceptionally uneven distribution of Zn2+ at the electrode/electrolyte interface under high depth of discharge (DOD) severely limits the advancement of high-energy-density Zn metal batteries (ZMBs). Herein, a hydrated eutectic colloidal electrolyte based on two-dimensional transition metal boride, Mo4/3B2T2 MBene (where T represents -OH and -F), is developed. The good Zn²⁺ affinity of terminal groups of MBene promotes ion diffusion, thus achieves a high Zn²⁺ transference number of 0.91, which significantly enhances and balances the ion concentration at the Zn anode surface, improving the Zn deposition dynamics. As a result, Zn anode with ultrathin thickness of 10 μm demonstrates 900 h of cyclability under ultrahigh DOD of 90%. Additionally, the enlarged Zn||Zn pouch cell with a scale of 10×10 cm2 shows a stable cyclic performance for 500 h at 60% DOD, meanwhile the constructed 2 Ah four-electron Zn||I2 pouch battery delivers an energy density of 158.5 Wh L−1 under the same condition. This work provides a new guideline for the development of high-DOD metal anodes and high-energy-density metal batteries.
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CERAMICS INTERNATIONAL
·
2025
·
IF 5.6
Yueqi Wu,Xing Gu,Mingyong Jia,Qiang Shen,Fei Chen
A reliable joining between silicon nitride (Si 3 N 4 ) ceramics and metallic molybdenum (Mo), which possess significantly different physical properties, is successfully achieved through powder metallurgy and gradient composite technology. The interfacial reaction mechanisms between Si 3 N 4 and Mo at various compositional layers are systematically investigated under a sintering temperature of 1500 °C. Based on the elucidated reaction pathways and the concentration distribution index (p), the structure of the transition layer in Si 3 N 4 /Mo x Si y /Mo functionally graded materials (FGMs) is effectively optimized. By eliminating the intermediate layers where severe reactions induce excessive porosity, the overall densification and interfacial integrity of the graded structure are significantly enhanced, thereby improving the mechanical performance of the composite. The results indicate that Si 3 N 4 and Mo primarily react via diffusion between Mo and Si to form molybdenum silicides, following the reaction sequence: (Mo + Si) → (Mo 3 Si/MoSi 2 + Si) → (Mo 5 Si 3 ). At a concentration distribution index of p = 1.5, the flexural strength of the Si 3 N 4 /Mo x Si y /Mo FGMs reaches a maximum value of 371.4 MPa. Furthermore, the elemental distribution across the optimized transition layers exhibits a quasi-continuous gradient profile, indicating excellent structural continuity and robust interfacial bonding.
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ACS Applied Energy Materials
·
2025
·
IF 5.5
Juan Sun,Yihui Zou,Penghui Ren,Peng Wang,Zhiyan Zhu,Can Cui
Perovskite solar cells (PSCs) in an n-i-p structure function well in large part due to the exceptional electrical conductivity and surface morphology of the SnO2-based transport layer (ETL). Here, we report a strategy to enhance the conductivity and tailor the surface morphology of the SnO2 ETL by incorporating molybdic acid (H2MoO4), forming a modified SnO2:H2MoO4 ETL. The incorporation of Mo6+ ions substitutes Sn4+ sites and inhibits the formation of oxygen vacancies (VO), resulting in an upshifted Fermi level and enhanced electron transport efficiency of SnO2. The H+ ions react with surface hydroxyl (−OH) defects through electrostatic interactions, suppressing surface defect generation and reducing nonradiative recombination. In addition, the in situ-formed amorphous MoO3 in the SnO2 matrix contributes to a denser and more uniform ETL. Consequently, the H2MoO4-modified PSCs achieve a champion PCE of 24.27%, marking a notable 9.5% boost compared to the control devices (22.17%), along with significantly enhanced long-term stability.
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MATERIALS RESEARCH BULLETIN
·
2025
·
IF 5.7
Litao Han,Hong Liu,Chen Lu,Yuanzhi Wei,Fanjun Kong
Molybdenum trioxide (MoO 3 ) possesses unique layered structure with high theoretical capacity and good environmental friendliness, which has been widely investigated as a potential anode material. Herein, MoO 3 nanosheets anchored in N-doped reduced graphene oxide (MoO 3 /NG) composite was constructed and prepared through hydrothermal reaction and post-calcination. The introduction of NG matrix can enhance the electronic conductivity and accelerate reaction kinetics of the MoO 3 , and solve the problem of severe capacity decay caused by its volume changes. MoO 3 /NG composite can deliver superior cycling performance (900.2 mAh g −1 at 0.2 Ag −1 after 100 cycles and 407.5 mAh g −1 at 10.0 Ag −1 after 500 cycles) and fast reaction kinetics with high diffusion coefficients and low charge transfer resistances. Moreover, the excellent electrochemical performance of the full battery lays a solid foundation for subsequent commercial application research.
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MOLECULES
·
2025
·Vol. 30
·期 6
·1286
·
IF 4.6
Yiran Zhang,Boyuan Xuan,Jiekai Wang,Xiang Chen,Changwei Zhao,Lixia Zhao,Jing Kang
The rational design of BiOBr photocatalysts with optimized surface properties and enhanced photooxidative capacities is crucial. This study proposes a synergistic strategy combining hydroxyl-rich solvents with polyvinylpyrrolidone (PVP) surfactants to modulate the structural and electronic properties of BiOBr through a solvothermal approach. The resulting self-assembled microspheres demonstrated exceptional efficiency in degrading ciprofloxacin (CIP), methyl orange (MO), and rhodamine B (RhB). Among the synthesized variants, BiOBr-EG-PVP (fabricated with ethylene glycol and PVP) exhibited the highest photocatalytic activity, achieving near-complete removal of 20 mg/L CIP and RhB within 10 min under visible light irradiation, with degradation rates 60.12–101.73 times higher than pristine BiOBr. The structural characterization revealed that ethylene glycol (EG) not only induced the formation of self-assembled microspheres but also introduced abundant surface hydroxyl groups, which simultaneously enhanced the hole-mediated oxidation capabilities. The incorporation of PVP further promoted the development of hierarchical honeycomb-like microspheres and synergistically enhanced both the hydroxyl group density and photooxidative potential through interfacial engineering. Density functional theory (DFT) calculations confirmed that the enhanced photooxidative performance originated from an increased surface oxygen content. This work elucidates the synergistic effects of hydroxyl-rich solvents and surfactant modification in the fabrication of advanced BiOBr-based photocatalysts, providing new insights for high-performance photocatalysis for environmental remediation.
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JOURNAL OF RARE EARTHS
·
2025
·
IF 7.2
Shouxian Zhong,Longjie Yuan,Xiang Li,Yan Xie,Danping Wu,Xinwei Dong,Chenghong Ao
Dye recovery offers a sustainable approach to treating dyeing wastewater. However, existing adsorbents used in such treatments lack high selectivity for dyes with the same charge and have unsatisfactory recycling properties, which have hindered progress in this field. Herein, the in situ loading of silicon carbide (SiC) and in situ growth of lanthanum hydroxide (La(OH) 3 ) on a cellulose gel-coated filter paper were achieved using a facile dip-coating method. The cellulose used was extracted from bagasse. The resulting membrane exhibits a high rejection rate for the anionic dye Congo red (97%) but a low rejection rate for anionic methyl orange (1.5%) owing to the incomplete coverage of La(OH) 3 by SiC. La(OH) 3 , an electron-deficient compound, shows a strong affinity towards electron-rich organics (e.g. Congo red). Moreover, its electron-deficient characteristic is conducive to separating photoinduced electrons/holes in SiC, improving membrane recyclability by enhancing photodegradation of the adsorbed dyes. Notably, after spraying with a low-concentration cellulose solution, the recyclability of the membrane is further improved because of its increased structural integrity during the recycling process. This work offers a method to utilise waste bagasse for dye recovery while demonstrating the feasibility of La(OH) 3 for photocatalytic applications.
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ACS Applied Materials & Interfaces
·
2020
·
IF 8.758
Junxiang Wang,Handong Jiao,Wei-Li Song,Mingyong Wang,Jiguo Tu,Zhongfeng Tang,Hongmin Zhu
Intermediate temperature NaCl–AlCl3-based Al-ion batteries are considered as a promising stationary energy storage system due to their low cost, high safety, etc. However, such a cheap electrolyte has a critical feature, i.e., strong corrosion, which results in the short cycle life of the conventional Al-metal anode and also limits the development of the NaCl–AlCl3-based Al-ion batteries. A noncorrosive electrolyte may be a good choice for addressing the above challenge, while it is difficult to obtain the electrolyte that has advantages of both noncorrosion and low cost. Therefore, here, we report a Ga-metal anode in the affordable NaCl–AlCl3 electrolyte for constructing a long-life stationary Al-ion energy storage system. This featured liquid metal anode shows good alloying and dealloying processes between metallic Ga and Al, as well as renders superior stability of the interface between the electrolyte and the anode (e.g., smoothly running for over 580 h at 2 mA cm–2). No-corrosion and no-pulverization problems appear in this novel liquid/liquid interface. Those advantages demonstrate that the liquid Ga-metal anode has a great promise for the improvement of the NaCl–AlCl3-based Al-ion batteries for large-scale stationary energy storage applications.
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JOURNAL OF ALLOYS AND COMPOUNDS
·
2025
·
IF 6.3
Kai Wei,Jiasheng Zhu,Lufang Fan,Weijie Zhang,Huarui Han,Changchang Ma,Kan Hu,Sheng Feng
Here, we constructed S-scheme CdIn 2 S 4 /MoO 3-x (CISMO) photothermal catalyst with interface Mo-S bond for efficient overall water splitting. As expected, hydrogen (H 2 ) and oxygen (O 2 ) evolution rates of the optimized CISMO reached 554.71 and 277.88 μmol·g −1 ·h −1 , respectively, far higher than that of CdIn 2 S 4 (71.78 and 34.45 μmol·g −1 ·h −1 ) and MoO 3-x (0 and 21.83 μmol·g −1 ·h −1 ). Mechanism analysis revealed that the photogenerated carrier transfer followed an S-scheme route. More importantly, the photocatalytic performance of CdIn 2 S 4 /MoO 3-x was highly relevant with the oxygen vacancies (Ovs) in pristine MoO 3-x . In S-rich environment, the Ovs could be imbedded by sulfur (S) for the formation of interface Mo-S bond during CISMO fabrication. Interface Mo-S bridge facilitated the photogenerated carriers transfer between CdIn 2 S 4 and MoO 3-x . Moreover, the metal-free localized surface plasmon resonance effect, originating from the residual Ovs in CdIn 2 S 4 /MoO 3-x , could further enhance the water splitting performance through photothermal conversion. This work shed light on controllable interface chemical bond formation in heterojunction photocatalysts to signally promote the photocatalytic performance.
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