MATERIALS RESEARCH BULLETIN
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2025
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IF 5.7
Dan-pu Zhao,Zhi-kun Peng,Shuai Wei,Qing-Qing Pang,Qiao-yun Liu,Zhong-yi Liu
Heterogeneous interfaces are an effective strategy to modulate interfacial properties and enhance catalytic functionality. However, their dynamic evolution under reaction conditions remains elusive, hindering rational catalyst design. Herein, we report a ReS2-CoO/CoS2 heterostructure to investigate its structural transformation under electrocatalytic water splitting conditions, as well as to modulate its activity and stability. Electrochemical measurements reveal exceptional bifunctional catalytic activity, with overpotentials of 25 mV for HER (at 10 mA·cm⁻²) and 241 mV for OER (at 50 mA·cm⁻²). The synergistic interfacial interaction substantially enhances the kinetic processes. The integrated interface between CoO and CoS2 on ReS2 not only ensures intimate electronic coupling but also facilitates abundant surface defect formation, as confirmed by FTIR, XPS, and EPR analyses. In-situ Raman spectroscopy demonstrates structural robustness during HER, whereas a significant surface reconstruction occurs during the OER, in which the initial CoO/CoS2 phase transforms into CoO/CoOOH, serving as the new active species. The catalyst achieves efficient overall water splitting performance (1.43 V at 10 mA‧cm⁻2) with sustained performance. These findings offer valuable insights into interfacial engineering strategies for the rational design of advanced electrocatalysts.
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DOI
高影响因子
MATERIALS LETTERS
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2020
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IF 3.204
Yun Zhang,Shihua Ding,Tianxiu Song,Yingchun Zhang
CoSnNb 2 O 8 ceramic with medium-permittivity was initially generated. Compositionally induced phase formation was identified by X-ray diffraction. Tetragonal rutile-type CoSnNb 2 O 8 was obtained from the reaction of SnO 2 with intermediate phase CoNb 2 O 6 . Both the dielectric constant ε r and quality factor Q × f initially increased with the sintering temperature, reaching the maxima at around 1225 °C, and declined thereafter. They were discussed based on the ionic polarizabilities and packing fraction, respectively. The temperature coefficient of resonant frequency τ f primarily depended on the Nb-site bond valence, as well as oxygen octahedra distortion. When sintered at 1225 °C, the CoSnNb 2 O 8 ceramic exhibited optimum properties with ε r = 31.8, Q × f = 43,000 GHz, and τ f = 35.01 ppm/°C.
研究领域:
材料科学
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无机非金属材料
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介电物理
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功能陶瓷
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微波材料
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DOI
高影响因子
CERAMICS INTERNATIONAL
·
2021
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IF 4.527
Beiyang Guo,Jianfeng Ma,Yichao Shi,Kewen Zheng,Minghong Wu,Guofa Ren,Sridhar Komarneni
Here in, a system of Co 3 O 4 /CoO catalyst activated with the aid of bisulfite (NaHSO 3 ) was established for the decomposition of methylene blue (MB). The Co 3 O 4 /CoO material was designed by a two-step uniform precipitation and calcination method and characterized by X-ray diffraction (XRD), field emission scanning electron microscopy (FE-SEM), vibrating sample magnetometer (VSM), X-ray photoelectron spectroscopy (XPS) and electron paramagnetic resonance (EPR) spectroscopy to detect the crystallinity, morphology, magnetic ability, element valence and the different types of free radicals, respectively. The efficient degradation of MB relies on the synergistic effect between the Co 3 O 4 /CoO catalyst and bisulfite (NaHSO 3 ) to generate some strongly oxidizing radicals, which could achieve a MB degradation rate of 90.7% within 40 min using this novel system. Additionally, the ferromagnetic property of Co 3 O 4 /CoO catalyst is expected to supply an excellent magnetic separation ability to help separate the solid catalyst from the aqueous solution. The novel catalyst system of Co 3 O 4 /CoO/NaHSO 3 may serve as a promising new system for wastewater treatment.
研究领域:
环境科学
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催化化学
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DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
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2023
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IF 6.2
Zichuan Lu,Shuai Li,Changhao Zhao,Jiaguang Zheng,Danhong Shang,Fuying Wu,Liuting Zhang
Herein, a novel approach by designing Schottky-structured CoNi nano-alloys were introduced. After compositing with MgH 2 , its initial hydrogen absorption started at a low temperature of 40 °C. At a temperature of 300 °C, 6.5 wt% of H 2 was released in only 10 min. Furthermore, the kinetic analysis revealed a pivotal transformation in the control model for dehydrogenation of MgH 2 , shifted from surface penetration to diffusion at a moderate temperature of 250 °C with the introduction of CoNi-CoO@rGO. After modification, the activation energy for hydrogen de/absorption decreased from 116 kJ/mol and 79.39 kJ/mol, to 66 kJ/mol and 54.39 kJ/mol, respectively. It is noteworthy that the CoNi-CoO@rGO-modified MgH 2 exhibited excellent cycling performance, retained an impressive hydrogen storage capacity of 97% after 20 cycles at 300 °C. The innovation of this work lies in the following three aspects: 1) the uniform distribution of CoNi-CoO@rGO nanoparticles on the surface of MgH 2 significantly enhanced the contact area and promoted the catalytic activity , 2) the synergistic effect between Mg 2 Co-Mg 2 CoH 5 and Mg 2 Ni-Mg 2 NiH 4 attenuate the intensity of the Mg-H bond and quickened the post-discharge of MgH 2 , 3) the incorporation of a CoO-induced Schottky structure accelerated the H transfer in MgH 2 and improved the hydrogen absorption and release efficiency.
研究领域:
材料科学
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氢能
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纳米技术
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催化
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能量存储
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DOI
高影响因子
ACS Catalysis
·
2026
·Vol. 16
·期 16
·16105-16114
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IF 13.6
Li Tan,Meng Yang,Sun Bingyan,Shi Xiaopeng,Su Jing,Wang Keran,Wang Kaige
Elucidating the role of hydrogen spillover in regulating the active sites of metal-acid catalysts is essential to enable selective lignin hydrodeoxygenation toward aviation biofuels. Herein, we developed a MoO 3 /Co@CoO catalyst that enables efficient hydrodeoxygenation of lignin and its derivatives into aviation biofuels. The catalyst achieved nearly complete conversion of monomeric phenolic derivatives with ∼99% selectivity toward aviation-range hydrocarbons, while lignin afforded 16.3 wt % liquid hydrocarbons with 53.2% selectivity to aviation-range hydrocarbons under mild conditions. Structural analyses confirmed the formation of a Co@CoO core−shell architecture and Co−O−Mo interfacial bonding. Combined experimental and DFT studies revealed that Co 0 sites facilitate H 2 dissociation, whereas the Co−O−Mo interface enables accelerated hydrogen spillover from Co to Mo species, generating Brønsted acid sites (Mo−OH) and driving the selective formation of aviation biofuel components. This work offers fundamental insights into rationally controlling hydrogen spillover via interface engineering in metal-acid catalysts for lignin hydrodeoxygenation.
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DOI
高影响因子
APPLIED CATALYSIS A-GENERAL
·
2026
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IF 4.8
Jing Wang,Jingru Liang,Li Jin,Yuxuan Zhou,Yue Gui,Mingxuan Chen,Minmin Wang,Tongming Sun,Yanfeng Tang
The Cu₂O/CoO/FeOOH heterostructure achieves high Faradaic efficiency and ammonia yield at low applied potential. • Further analysis reveals heterointerface‑tuned electronic structure and accelerated synergistic electron transfer. • The Cu₂O/CoO/FeOOH heterostructure exhibits excellent long‑term durability. Electrochemical nitrate into ammonia is a feasible and promising wastewater recovery strategy. In this work, a ternary Cu 2 O/CoO/FeOOH heterogeneous structure catalyst with rich interface has been reasonably designed. In the complex system, the electron-rich Cu active center enhances the adsorption of nitric acid radical ions, while Co and Fe species promote the generation of reacted hydrogen (H*) intermediates. The synergistic effect between multiple active sites effectively reduces the energy barrier of the eight-electron nitrate reduction reaction. Therefore, the optimized catalyst achieved a high Faradaic efficiency (FE) of 95.75% and a significant NH 3 yield of 9.83 mg h −1 cm −2 under the condition at −0.4 V vs. RHE. This study confirms the key role of interface electronic regulation in improving the electroreduction performance of nitrates, and provides a simple and reliable strategy for the rational design and construction of high-efficiency heterogeneous structural electrocatalysts. Download: Download high-res image (151KB) Download: Download full-size image A rationally designed ternary Cu 2 O/CoO/FeOOH heterostructured catalyst abundant in heterogeneous interfaces is reported, in which electron-enriched Cu sites strengthen nitrate adsorption and Co/Fe species facilitate the formation of reactive H* intermediates; the multi-site synergism substantially lowers the energy barrier for the eight-electron nitrate-to-ammonia reduction.
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高影响因子
JOURNAL OF CHEMICAL TECHNOLOGY AND BIOTECHNOLOGY
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2024
·Vol. 99
·期 8
·1821-1836
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IF 2.8
Haoyu Fan,Yanzhao Xia,Cuizhen Sun,Rupeng Liu,Feiyong Chen,Meng Li,Weichen Zhu,Xinpeng Yang,Zhen Zhang
BACKGROUND Anthraquinone dyes have an anthraquinone structure as their nucleus, with one or more substituents forming different organic dyes. Anthraquinone dyes have a complex structure that allows them to exist stably in water environment, but also makes them more toxic than azo dyes. This results in varying degrees of harm to both humans and the environment as a result of residual dyes in the water or on the material’ surface. Sodium percarbonate (SPC) is a highly promising oxidant due to its green end product. Therefore, in this study, the catalytic performance and kinetic study of cobalt oxide (CoO) on SPC under different conditions were systematically investigated using RB19 as the target pollutant. The Box–Behnken Design (BBD) model was used to model the degradation of RB19 by CoO/SPC system, which gives the basis for practical application. The types of reactive oxygen species that effectively degrade RB19 and the potential degradation mechanism of the CoO/SPC system were revealed. At the same time, the CoO/SPC system was evaluated in terms of its practicality. RESULTS In this work, the activation of SPC using CoO towards reactive blue 19 (RB19) degradation was explored. Experimental results showed that nearly 93.8% of RB19 could be removed within 30 min using 1 mmol L −1 SPC and 30 mg L −1 CoO. The three-factor interaction effects of SPC concentration, CoO dosage and initial pH were investigated. The BBD model was set up to obtain the optimum working conditions of 1.039 mmol L −1 SPC, 33.35 mg L −1 CoO and the initial pH of 7.82, which gave a degradation rate of 95.372%. Additionally, it was confirmed that the solubility of Co 2+ is consistently <150 μg L −1 , meeting the emission standard (1 ppm). The presence of Cl − , NO 3– , and HA had a similar profile, with a slight promoting effect in small amounts and an inhibitory effect when introduced in excess. The introduction of SO 4 2– had a negligible effect on RB19 degradation, whereas the presence of HCO 3 − produced a slight inhibitory effect. Furthermore, the presence of PO 4 3– showed a strong inhibitory effect. The CoO/SPC system is suitable for other organic dyes (32.7%–100%) and antibiotics (97.1–100%). Electron paramagnetic resonance (EPR) analysis and quenching experiments confirmed the presence and relative contribution of free radicals in the CoO/SPC system as CO 3 •- (88.12%) >O 2 •- (51.11%) >1O 2 (37.21%) >•OH (5.27%) > SPC (3.33%) >CoO (0.09%). It has been confirmed that CoO activates SPC through electron transfer. CONCLUSION The present study describes a less time-consuming, and more efficient method of treating anthraquinone dye wastewater that requires less oxidizer and catalyst, making it more economical. This proposes a straightforward, cost-effective and efficient technique using SPC triggered by transition metal oxides. © 2024 Society of Chemical Industry (SCI).
研究领域:
环境科学
·
化学工程
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DOI
高影响因子
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
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2025
·
IF 4.1
Dajun Wu,Xinyue Zhang,Xuan Wan,Heng Zhang,Zhicheng Wang,Shi Tao,Bin Qian,Shaohui Xu,Paul K. Chu
Cobalt monoxide (CoO) has attracted much attention due to its high theoretical capacity and long cycling life in lithium-ion batteries (LIBs). However, the intrinsic CoO anode has poor conductivity and experiences large volume changes during cycling. The use of the proper carbide materials and morphological modification can overcome some of the barriers. In this work, few-layer Ti 3 C 2 is used to fabricate the cabbage-like CoO/Ti 3 C 2 composite by a one-step hydrothermal process, and the electrochemical properties of samples are evaluated systematically. The composite has a cabbage roll structure with a diameter of 2–7 μm assembled on folded nanosheets with a lateral dimension of 1–2 μm. The interlayer spacing is 0.1–0.5 μm and the Ti 3 C 2 mass ratio is less than 9 %. The cabbage-like CoO/Ti 3 C 2 electrode shows a high original specific capacity of 980.5 mAh g −1 at 0.5 C. After 1000 cycles, the reversible discharging capacity is still 598.1 mAh g −1 besides a good capacity retention ratio of 93.2 %. Compared with CoO and CoO/rGO, the cabbage-like CoO/Ti 3 C 2 has a faster ion transport rate and robust skeleton, leading to excellent cycling stability. The simple fabrication strategy and materials with outstanding cycling stability have large potential in the development of next-generation LIBs.
研究领域:
材料科学
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电化学
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产品关联
DOI
高影响因子
iScience
·
2025
·
IF 4.1
Shixin Wang,Yuzhe Gao,Zhanshu Yang,Hui Zhou,Desheng Ni,Chuanbo Li,Qi Li,Xiaoming Zhang
Transition metal oxide CoO has attracted extensive attention as a potential anode material for lithium-ion batteries (LIBs) due to its impressive theoretical specific capacity. However, pristine CoO often suffers from structural collapse during cycling, resulting in reduced capacity. To address these challenges, we developed a method to in situ grow octahedral CoO nanoparticles on hierarchical multilayer MoB MBene. The matched layer gradients and heterojunction formation between CoO and MoB MBene effectively accommodate the volume expansion of CoO. Following 200 cycles at 100 mA/g, the CoO/MoB MBene electrode achieves a capacity of 819.8 mAh/g, a significant 2.58-fold performance improvement over pristine CoO. Even at 1000 mA/g, the composite retains a capacity of 601.3 mAh/g after 600 cycles, while the pristine material retains only 142.4 mAh/g. This breakthrough suggests CoO/MoB MBene composite holds great promise in improving the performance of LIBs and may pave the way for the development of advanced materials.
研究领域:
材料科学
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能源存储技术
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产品关联
DOI
PubMed
高影响因子
CERAMICS INTERNATIONAL
·
2020
·
IF 3.83
Yuchen Zhang,Yongqian Shen,Minmin Dang,Fan Zhang,Xueyan Du
Carbon nanofiber composites could be used as a microwave absorbing candidate owing to its lightweight and dielectric properties . In this work, the carbon-based nanofibers were synthesized using cobalt acetate tetrahydrate (CoAc)/poly (vinyl alcohol) (PVA) as a precursor solution via the electrospinning and vacuum carbonization at 650 °C. Co and CoO were simultaneously introduced into carbon nanofibers (CNFs). The CNFs absorber with an especially low filling ratio of 10% exhibited excellent microwave absorbing properties. The minimum reflection loss (RL) reached −43.57 dB at 10.48 GHz with a matching thickness of 3 mm, and the wideband effective absorption (RL ≤ −10 dB) reached 5.78 GHz (10.94–16.72 GHz) at 2.5 mm. The superior absorption performance of the as-prepared CNFs resulted from the formation of CoO, causing the improvement of impedance matching and interfacial polarization. Besides, the CNFs displayed good hydrophobicity due to the roughened surfaces. These newly synthesized Co/CoO/CNFs might be considered as a prospective candidate for highly efficient microwave absorption materials with a self-cleaning function.
研究领域:
材料科学
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电磁学
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产品关联
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2020
·
IF 5.774
Ruyan Dou,Hao Cheng,Jianfeng Ma,Yong Qin,Yong Kong,Sridhar Komarneni
A novel catalytic system was developed by activating NaHSO 3 with CoO nanoparticles for methylene blue (MB) degradation. The CoO nanoparticles were synthesized by a facile one-pot hydrothermal method followed by calcination . The crystallinity, morphology and elemental valence of the CoO were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM) and X-ray photoelectron spectroscopy (XPS), respectively. MB degradation rates of 91.5% in one minute and 99.4% in six minutes were obtained using the CoO/NaHSO 3 system, which may provide a more cost-effective and efficient way for decomposition of dye pollutants. The well-known classical quenching tests were used to investigate the free radicals involved in MB degradation along with electron paramagnetic resonance (EPR) spectra, the latter further confirmed the types of free radicals. Sulfate and hydroxyl radicals were proposed to be responsible for the excellent dye degradation achieved with the new CoO/NaHSO 3 system.
研究领域:
环境科学
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材料科学
·
催化化学
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产品关联
DOI
高影响因子
ACS Applied Nano Materials
·
2020
·
IF 0
Tianyu Zhu,Yan Wang,Yang Li,Rui Cai,Jianfang Zhang,Cuiping Yu,Jingjie Wu,Jiewu Cui,Yong Zhang,Pulickel M. Ajayan,Yucheng Wu
Lithium-ion capacitor (LIC) is an efficient hybrid electrochemical energy storage device, which dominates high power and energy density simultaneously. In this work, a method of liquid phase fragmentation combined with solvothermal and freeze drying treatment is used to fabricate CoO quantum dots/reduced graphene oxide composite (CoO QDs/rGO) anode. Liquid phase fragmentation plays an important role in the controllable formation of ultrafine CoO nanoparticles and their uniform anchoring on three-dimensional (3D) rGO aerogels. The CoO/rGO anode exhibits an initial discharge specific capacity of 1233.6 mA h g–1 and a discharge specific capacity of 726.1 mA h g–1 after 700 cycles at 1.0 A g–1. The high specific capacity and good cycle performance are attributed to the CoO QDs with short ion transport paths, low stress change, and large interaction area between the electrode and electrolyte as well as a flexible conductive rGO with a large active surface area and abundant active sites. Metal oxide quantum dots formed by liquid phase fragmentation and the corresponding 3D multichannel metal oxide/rGO composite aerogels could be developed as superior candidates for efficient energy storage in LIC.
研究领域:
材料科学
·
能源存储
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DOI
危险品化学品经营许可证（带存储）