CORROSION SCIENCE
·
2024
·
IF 7.4
Fei Gao,En Su,Jiaming Hou,Jiale Wang,Yukun Zhou,Haotian Qin,Zhenhai Xie,Jinlong Mao,Huaiyu Li,Wenjie Tao,Yingqi Chen,Junyu Qian,Guojiang Wan
Long-term corrosion profile of molybdenum was studied in three different simulated body fluids up to 28 days, compared with magnesium, zinc, and iron from the perspective of biodegradable metals (bio-metals). Their corrosion rate, mode, products and surface characteristics were comprehensively fathomed. Strikingly, Mo showed progressively advantageous long-term corrosion behavior with the smallest corrosion rate, and most importantly, more uniform mode, as compared with the other three bio-metals. It also performed bilaterally under the simulated inflammatory and bovine serum protein added conditions, with different corrosion progressions. These findings provide an optimistic outlook in opting molybdenum as a new type of bio-metal.
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CHINESE JOURNAL OF STRUCTURAL CHEMISTRY
·
2025
·
IF 10.3
Yukang Xiong,Lin Lv,Guokun Ma,Hanbin Wang,Houzhao Wan,Hao Wang
Addressing the kinetic limitations of the oxygen evolution reaction (OER) is paramount for advancing rechargeable Zn-air batteries, thus it is extremely urgent to drive the development of effective and affordable electrocatalysts. This work constructed the interfacial structure of cobalt-iron alloys@ phosphates (denoted as CoFe/Co-Fe-PO) as OER catalyst through a two-step approach using water-bath and hydrothermal methods, which demonstrated significant OER activity in alkaline media, requiring a low overpotential of 271 mV to achieve 10 mA cm -2 and exhibiting a competitive Tafel slope of 65 mV dec -1 , alongside sustained operational stability. The enhanced performance can be attributed to the improved electrical conductivity due to the participation of CoFe alloys and the an increased number of active sites through partial phosphorylation, which synergistically enhance charge transfer processes and accelerate OER kinetics. Moreover, dynamic structural evolution during OER process was thoroughly probed, and the results showed that alloys@ phosphates gradually evolved into phosphate radical-modified Co-Fe hydroxyoxides that act as the actual active phase. Highlighting its practical applicability, the integration of the prepared catalyst into zinc-air batteries led to markedly improved performance, thereby offering promising new strategic directions for the development of next-generation OER electrocatalysts.
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SYNTHETIC METALS
·
2024
·
IF 4
Xinyue Wei,Kaijing Xue,Yanting Wei,Sumin Wang,Xiao Zhang,Xinhai Wang,Qiguan Wang
Cathode materials play a crucial role in the energy-storage performances of zinc ion battery (ZIB). In this paper, the two-dimensional vanadium carbide MXene (V 2 C-MXene) nanoplates intercalated by Cu 3 V 2 O 7 (OH) 2 ·2 H 2 O (CuVO) are synthesized. The intercalation of CuVO in the interlayers of V 2 C-MXene overcomes self-aggregation of CuVO and improves its structural stability . Meanwhile, the enlarged interlayer spacing of highly conductive V 2 C-MXene upgrades the electron transfer within the composite. As the cathode electrode of ZIB, the CuVO intercalated V 2 C-MXene (CuVO@V 2 C-MXene) battery shows capacity as high as 551.8 mAh g −1 when discharged at 0.5 A g −1 . The capacity retention rate reaches 91.8% after 3000 cycles at high current density of 6.0 A g −1 . As a comparison, the CuVO//Zn battery has capacity only 193.3 mAh g −1 at 0.5 A g −1 , with the capacity retention of just 43.1% after 3000 cycles at 6.0 A g −1 . Simultaneously, the CuVO@V 2 C-MXene//Zn illustrates greatly improved rate capability compared with CuVO//Zn. The CuVO@V 2 C-MXene composite nanoplates in this work show promise in fabrication of high capacity metal ion batteries.
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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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Materials Horizons
·
2025
·
IF 10.7
Qianwen Chen,Yanbing Huang,Wanshun Duan,Qijia Su,Yilong Wang,Fuxi Bao,Junjun Zhang,Wen Guo
The kinetics of the oxygen evolution reaction (OER) of Co3O4 in alkaline media can be promoted by a bimetallic co-doping strategy. Herein, we synthesize a Zn/Fe co-doped Co3O4 nanostructure (ZnFe-Co3O4) to enhance the oxygen evolution reaction performance in the alkaline media. The ZnFe-Co3O4 electrocatalyst exhibits a low overpotentials of 255 mV at 10 mA cm-2, a Tafel slope of 54 mV dec-1 in 1.0 M KOH and excellent long-term durability up to 120 hours at 100 mA cm−2. The X-ray photoelectron spectroscopy (XPS) reveals that Zn occupies octahedral Co3+ sites and Fe occupies tetrahedral Co2+ sites in the Co3O4 lattice. The experimental results together with theory calculations collectively demonstrate that ZnFe-Co3O4 follows the lattice oxygen mechanism (LOM) during OER process. In situ Raman spectroscopy shows that the truly reactive FeOOH/CoOOH species are formed through surface reconstruction during OER. Furthermore, it is found that the synergistic effects of Zn and Fe doping, which stabilize the Co3O4 structure and promote the generation of active (oxy)hydroxide species, are identified as key factors in the enhanced electrocatalytic performance. This work offers a novel concept for enhancing the electrocatalytic activity of electrocatalysts through doping strategies and provides guidance for the rational design of ideal electrocatalyst.
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高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2021
·Vol. 31
·期 49
·2107397
·
IF 18.808
Shuang Wu,Shu Zhang,Yuzhu Chu,Zhenglin Hu,Jiayan Luo
Zinc anodes have attracted widespread attention for their intrinsic safety, low cost, and abundant resources, but still suffer from severe irreversibility due to spontaneous corrosion and nonplanar dendrite formation in aqueous electrolytes. In this work, a 3D stacked lamellar matrix (SLM) composed of ZnF 2 /Zn 3 (PO 4 ) 2 /CF X is elaborately designed on a Zn substrate via simple chemical/electrochemical reactions, delivering enhanced thermodynamic stability and rapid zinc ions transport kinetics. The abundant ion conduction channels in SLM could also redistribute Zn 2+ ions flux and further suppress the dendrite growth. With these synergetic effects, the SLM-Zn anodes enable exceptional performance, including a high depth of discharge (90%) in a Zn|Zn symmetrical cell for 187 h, steady charge/discharge process (94.1% retention of SLM-Zn|MnO 2 full cell for 1000 cycles at a harsh rate of 15 C), and low negative/positive capacity ratio (≈3.3) in SLM-Zn|AC hybrid supercapacitor with limited Zn anode (10 µm) and high-load cathode (≈1.77 mA h cm −2 ), which greatly promotes the application of aqueous Zn-ion energy system under practical conditions.
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Surfaces and Interfaces
·
2025
·
IF 6.3
Jianhua Zheng,Jiayi Hou,Zhen Xu,Zhenping Guan,Xiangyu Cao,Guangming Yin
Rational design of heterojunction is of vital importance for addressing the rapid recombination problem of photogenerated charge carriers in photoreactions. Herein, a highly efficient Z-scheme heterojunction with interfacial Zn-O-Ce bonds was successfully fabricated by hybridizing 3D flower-like hierarchical ZnCo 2 O 4 (ZCO) microspheres with CeO 2 nano particles (NPs) and used to photocatalytic remove multiple pollutants. These features of Z-scheme charge transfer mechanism and chemically bonded interface not only reserved the strong oxidation–reduction ability of CeO 2 /ZCO hybrid but also speeded up electron migration from CeO 2 to ZCO. Meanwhile, the 3D hierarchical structure provided rich photocatalytic reaction sites and increased light harvesting ability. Thus, the as-prepared CeO 2 /ZCO displayed an extraordinary photocatalytic decomposition of Ciprofloxacin (CIP) and Basic Fuchsin (BF), removal rate as high as 87.6 % and 90.7 %, respectively. This work can enlighten a new insight to design versatile hetero-catalysts for solar energy conversion.
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CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Guangrui Jin,Baoxin Ge,Xinle Hong,Caijin Huang,Jing Tang
Designing efficient photocatalysts for photocatalysis hydrogen production is crucial for advancing green energy technologies. In this work, ZnIn 2 S 4 photocatalyst with an asymmetric Zn-Zn-S unit ring structure and abundant in S vacancies was achieved by precisely tuning the molar mass of the Zn ion source using ethylene glycol as the reaction solvent. Z-type heterojunction was constructed via the electrostatic assembly by combining silver clusters (Ag x @GSH) with ZnIn 2 S 4 to enhance charge separation and photocatalytic activity. The structural transition from S-Zn-S to Zn-Zn-S led to local charge redistribution. Meanwhile, S vacancies acted as electron traps, promoting the charge state change of S in the S H sites and significantly accelerates the hydrogen evolution reaction (HER). The composite catalyst Zn-Vₛ-ZIS/Ag x @GSH exhibited a hydrogen production rate of 18.4 mmol·g −1 ·h −1 , under acidic conditions with lactic acid as the sacrificial agent, which is 3.7 times higher than pristine ZnIn 2 S 4 . Density functional theory (DFT) calculations revealed that the Zn-Zn-S distortion and heterojunction formation synergistically enhanced charge transfer and hydrogen adsorption kinetics. This work provides a novel approach for tailoring ZnIn 2 S 4 -based photocatalysts and provides new insights into the design of high-performance heterojunction systems for solar energy conversion.
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APPLIED SURFACE SCIENCE
·
2025
·
IF 6.9
Xuan Xuan,Shuang Meng,Guozhe Sui,Ning Liu,Dongxuan Guo,Dantong Zhang,Xue Yang,Yue Li,Jinlong Li
The rational design of solid-solution-oxide heterostructure presents a promising pathway to synergize band structure engineering and interfacial charge dynamics in advanced photocatalysis. Herein, a novel S-scheme CeZnO/ZnO heterojunction was fabricated through solid-solution lattice engineering, where Ce-O-Zn covalent bonding networks are strategically constructed at phase boundaries via controlled exceedance of the Ce solubility limit in ZnO matrix. Coupled with Ag nanoparticle-induced localized surface plasmon resonance (LSPR), this hierarchical system achieves remarkable visible-light-driven tetracycline (TC) degradation (90.4 % within 60 min). The outstanding degradation performance can be attributed to the formation of a built-in electric field at the Ce-O-Zn interface, the presence of oxygen vacancies, and the synergistic catalytic effect of Ag nanoparticles. Density functional theory (DFT) calculations and experimental characterizations further reveal that the CeZnO/ZnO heterojunction facilitates S-scheme charge transfer via Ce-O-Zn bonds, improving charge transfer and separation efficiency while preserving the strong redox capability of photo-generated charge carriers. This study provides valuable insights into the design of high-performance heterojunction photocatalysts and carries significant implications for the development of photocatalysis.
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JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
·
2025
·Vol. 36
·期 7
·1-15
·
IF 2.8
Shen Tao,Chen Hongxia,Fu Hu,Zhang Xinyu,Zhou Mengcheng,Xu Shuangwu,Hu Hanchi,Li Haichen,Zhou Hongming
P2-type layered transition metal oxides with high theoretical specific capacity and operating voltage are considered as one of the highly promising cathode materials for sodium-ion batteries, but the poor cycling stability attributed to the P2-O2 phase transition and Na + /vacancy ordering limits their practical applications. In this paper, a hydrothermal method is used to investigate the improvement of the electrochemical properties of Na 0.75 Ni 0.33 Mn 0.67 O 2 by Zn/F synergistic doping. The synergistic modification of Zn/F not only adjusts the valence distribution of Mn and improves the specific capacity, but also suppresses the phase transition under high voltage and the dissolution of transition metal ions. In particular, Na 0.75 Ni 0.23 Mn 0.67 Zn 0.1 O 1.95 F 0.05 (ZF-5) has excellent cycling performance (82.1% capacity retention after 100 cycles at 1C), compared to just 11.6% for the Na 0.75 Ni 0.33 Mn 0.67 O 2 (ZF-0). Above that, the rate performance is also significantly improved, with the specific capacity reaching 94.7 mAh g −1 even at a high current density of 5 C. Therefore, the Zn/F double doping modification strategy provides a simple and effective method for designing high-performance layered oxide cathode materials.
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Journal of Environmental Sciences
·
2025
·
IF 6.3
Lei Wang,Zhe Li,Dongdong Tuo,Mingze Li,Mengtong Guo,Wenqian Zhang,Xiaodong Wang,Fuxin Hang,Ying Zhang
Heavy metal pollution is becoming increasingly severe, and rare earth elements (REEs) play a crucial role in influencing the environmental impact of heavy metals. Mixed heavy metal pollution presents a significant challenge due to its complex effects. While many studies have focused on single heavy metal pollution, relatively few have examined the pollution caused by rare earth-heavy metal composites. This study investigated the toxic effects of Ce-Zn compound pollution on maize roots and used the integrated biomarker response (IBR) to assess the toxicity of different concentrations of Ce-Zn compound pollution on maize roots. The results showed that Ce-Zn compound pollution had a threshold effect: promoting maize growth at low concentrations but inhibiting growth at a threshold concentration of Ce 50 mg/kg-Zn 50 mg/kg. Ce-Zn compound pollution-induced oxidative stress in maize. When the pollution concentration exceeded the threshold, the H₂O₂ content in maize roots increased by 3.30 and 3.56 times, respectively, compared to the CK group, while the O₂⁻ content increased by 1.45 and 1.48 times, respectively. Cell structure damage was observed, and the levels of antioxidant enzymes—peroxidase (POD), catalase (CAT), and superoxide dismutase (SOD)—in maize roots gradually increased. At low concentrations, the Ca²⁺ absorption rate in maize roots increased by 82.99 % compared to CK. By regulating the Ca²⁺ concentration, the absorption of H⁺ and other ions was affected, enhancing intracellular enzyme activity and improving the tolerance of maize roots to compound pollution. These findings enhance our understanding of the harmful effects of combined pollution from rare earth metals and heavy metals on plants.
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INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
·
2025
·
IF 8.3
Jialu Wei,Fanghui Mi,Wei Zhang,Chunwen Sun
BaCeO 3 -based proton conductors exhibit high ionic conductivity but suffer from poor chemical stability and high sintering temperatures, limiting their application in protonic ceramic fuel cells (PCFCs). This study demonstrates that Zn doping in BaZr 0.1 Ce 0.7 Y 0.2 O 3−δ (BZCY) enhances both chemical stability and ionic conductivity. BaZr 0.1 Ce 0.7 Y 0.1 Zn 0.1 O 3−δ (BZCYZn) achieves higher proton conductivities of 0.022 S cm −1 in humid H 2 and 0.019 S cm −1 in CH 4 at 750 °C, surpassing those of BZCY. Zn doping improves conductivity in both the bulk and grain boundaries. An anode-supported single cell using BZCYZn as the electrolyte delivers peak power densities of 1324.63 mW cm −2 in H 2 and 647.49 mW cm −2 in CH 4 , significantly outperforming BZCY. The electrochemical performance and mass transport properties of BZCYZn are further analyzed using distribution of relaxation times (DRT) analysis.
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