IONICS
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2025
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IF 2.6
Wang Zhaomin,Zhao Chaoyue,Niu Xiaodong,Cheng Yong,Wang Limin,Huang Pai
With high theoretical discharge specific capacity, excellent reversibility of electrochemical reaction, and suitable oxygen evolution overpotential, α -Ni(OH) 2 is an auspicious cathode material for alkaline batteries, which supports the development of high-capacity nickel-based batteries. Nevertheless, α -Ni(OH) 2 exhibits substandard structural stability and is susceptible to crystalline transformation, leading to capacity degradation, affecting the battery charge/discharge performance and cycle life. In this study, the TiO 2 -nickel hydroxide (TiO 2 - α -Ni(OH) 2 ) is prepared by high-energy ball milling. Among them, TiO 2 can be uniformly dispersed on the surface of α -Ni(OH) 2 , which can effectively prevent the collapse of the α -phase structure. Benefiting from the unique elemental doping technology, the TiO 2 - α -Ni(OH) 2 composites as a nickel-metal hydride (Ni-MH) battery cathode can release a reversible specific capacity of 390 mAh g −1 at a 2 C rate for 200 cycles. A reversible specific capacity of 210 mAh g −1 is still released after 200 cycles at a 5 C rate. Consequently, TiO 2 - α -Ni(OH) 2 is a promising candidate for high-power Ni-MH batteries.
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Polymers
·
2022
·Vol. 14
·期 21
·4494
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IF 4.967
Wanming Teng,Yanyan Li,Ting Ma,Xiuyun Ren,Ding Nan,Jun Liu,Xiaohu Wang,Qin Yang,Jiaojiao Deng
Lithium metal batteries are emerging as the next generation of high-density electrochemical energy storage systems because of the ultra-high specific capacity and ultra-low electrochemical potential of the Li metal anode. However, the uneven Li deposition on commercial Cu current collectors result in low Coulombic efficiencies (CEs) and poor cycle life. In this research, we proposed the modification of ZnFx(OH)yon Cu foils to expand the lifespan. As-generated ZnLi alloy and LiF could promote uniform Li nucleation and deposition, thus resulting in an improved Li plating/stripping CE and extended cycle life. The Li-S battery with sulfurized polyacrylonitrile cathode and Li-ZnFx(OH)y@Cu anode (N/P ratio of 1.5:1) maintains 95% capacity after 60 cycles, proving the feasibility of ZnFx(OH)y@Cu for practical applications.
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PROGRESS IN ORGANIC COATINGS
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2017
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IF 2.858
Hongxia Wang,Ting Guo,Yanfen Zhang,Qingyan Zhang,Houbin Li
This paper prepared 4 inks mainly based on chitosan with different molecular weight and different mass percentage, and pigment (FeO(OH)·xH2O). The inks were characterized using Fourier transform infrared spectroscopy (FT-IR). Rheological properties were discussed by shear rate, time, temperature, oscillatory modulus, yield stress, and screen-printing simulation. Antimicrobial activity was analyzed by the growth inhibition zone. The inks were also applied to screen printing on substrates containing coated paper, nori, chocolate, etc. The print performance of the inks on coated paper was investigated by contact angle, optical density, print fastness and scratch resistance. 4 inks possessed obvious thixotropy and different linear viscoelastic regions. The experimental yield stress was 39 Pa and viscosity recovery rate was up to 76% after 105 s. Growth inhibition zone achieved 12.0 mm in diameter and optical density reached 1.2 with contact angle being 73°. The results indicate that the developed ink is applicable for screen printing.
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高影响因子
JOURNAL OF NON-CRYSTALLINE SOLIDS
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2014
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IF 1.716
J. Yuan,W.C. Wang,D.D. Chen,M.Y. Peng,Q.Y. Zhang,Z.H. Jiang
Enhanced 1.8 μm emission from Tm 3+ by Yb 3+ sensitization and bubbling in tungsten tellurite glasses has been demonstrated under the excitation of a 976 nm laser diode . Radiative properties such as spontaneous emission probabilities, radiative lifetimes and fluorescence branching ratios along with absorption and emission cross sections have been calculated from the absorption spectra . The influences of Yb 3+ concentration, Tm 3+ concentration, and bubbling time on spectroscopic properties have been thoroughly investigated. It is found that with increasing the bubbling time to 35 min, OH − content deceases sharply while 1.8 μm emission intensity improves greatly and 3 F 4 level lifetime prolongs to 1.57 ms close to radiative time. After 35 min, they change very little due to almost reaching the dynamic balance. The strength of interaction between Tm 3+ and OH − is determined. The energy transfer mechanism between Yb 3+ and Tm 3+ is proposed by photoemission spectroscopy and lifetime measurement. The energy transfer coefficients have been analyzed by the extended spectral overlap method and hopping model. Large ratio of the forward energy transfer from Yb 3+ to Tm 3+ to the backward one (223) and high energy transfer efficiency (97%) from Yb 3+ to Tm 3+ ensure efficient 1.8 μm emission. Hence, Yb 3+ sensitization and the reduction of OH − content could be expected to open up a possibility to achieve high efficient 2.0 μm lasing from Tm 3+ under a 976 nm LD pump.
研究领域:
光学材料
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激光物理
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固体激光器
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光谱学
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无机非金属材料
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光子学
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稀土发光材料
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高影响因子
CHEMICAL ENGINEERING SCIENCE
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2026
·
IF 5.1
Yong Zheng,Haobin Wu,Shouchao Zhong,Xun Kan,Ye Song,Fujian Liu,Wei Lin,Jianchun Wang,Lilong Jiang
The development of efficient and reusable sorbents for SO 2 removal from flue gas has attracted considerable attention. Herein, we report a “chainmail” structured Ca-based SO 2 sorbent by encapsulating Ca species within ordered mesoporous carbon (OMC), denoted as Ca(OH) 2 @OMC- x , where x denotes the Ca(OH) 2 mass fraction (wt%). The OMC was prepared via a one-step solvent-free mechanochemical assembly: the precursors and a block copolymer template (Pluronic F127) were ground to form a preorganized composite, followed by solidothermal treatment and calcination to remove the template and carbonize the polymer. The obtained OMC was then impregnated with a Ca precursor and calcined to strengthen interfacial interactions, encapsulating the Ca species within the OMC framework. Finally, steam treatment converted the confined Ca species into finely dispersed Ca(OH) 2 active domains. The resulting Ca(OH) 2 @OMC- x exhibits a large BET surface area (169.4–290.3 m 2 /g), long-range ordered mesoporosity with a narrow pore size distribution (∼5.5 nm), and well-dispersed Ca active phases with enhanced stability. Consequently, Ca(OH) 2 @OMC- x serves as an efficient and reusable solid sorbent for SO 2 capture, exhibiting a high SO 2 adsorption capacity of 11.24 mmol/g and maintaining 98.6% of its initial capacity after five adsorption–desorption cycles. This study provides an effective “chainmail encapsulation” materials design strategy for scalable SO 2 abatement under complex flue gas conditions.
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高影响因子
JOURNAL OF POWER SOURCES
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2026
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IF 8.4
Enxiang Zhou,Lijun Zhou,Yan Jin,Siyu Cai,Maxim Sychov,Yi Wang,Xihong Lu
Nickel/cobalt-based materials have attracted significant interest as cathode materials for aqueous alkaline Zn batteries (AAZBs) due to their high theoretical capacity and natural abundance. However, their practical application is hindered by unsatisfied discharge capacity and poor cycling stability, primarily caused by insufficient active sites and sluggish reaction kinetics. Herein, an effective approach is demonstrated to achieve high-efficiency and stable cathode for AAZBs by anchoring the NiCo 2 S 4 /Co 9 S 8 heterostructures on MXene nanosheets (NCS/CS@MXene), accompanied with morphological optimization. The introduced MXene significantly increases the effective active area and electrical conductivity of the composite. Consequently, the NCS/CS@MXene//Zn battery delivers a high areal capacity of 1.01 mAh cm −2 at 2 mA cm −2 , excellent cycling stability of 2500 cycles with only 0.00416% of capacity degradation per cycle, and nearly 100% coulombic efficiency.
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ACS Sustainable Chemistry & Engineering
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2026
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IF 7.6
Qiaozhi Han,Chengxu Li,Yunshu Wang,Ziwei Ma,Chengyu Duan,Yucong Yin,Zichen Bao,Yonghao Shen,Chenwen Yin,Zhuofeng Hu,Qiming Sun
Abstract The direct synthesis of hydrogen peroxide (H2O2) from H2 and O2 provides a sustainable route for decentralized oxidant production, but its practical use is limited by inefficient Pd utilization, undesired H2O2 decomposition, and the need for high noble-metal loadings. Here, we report a Ni(OH)2-promoted Pd@S-1 catalyst that integrates zeolite confinement with interfacial electronic modulation for efficient aqueous H2O2 synthesis. The optimized Pd4Ni1@S-1-H catalyst delivers an H2O2 productivity of 3.39 mol gPd–1 h–1 under acidic conditions, representing the highest value among reported semibatch glass reactor systems and a 10-fold improvement in Pd utilization efficiency relative to a commercial Pd/C catalyst. Advanced spectroscopic analysis and density functional theory calculations reveal that Ni(OH)2 donates electrons to Pd, lowering the average Pd valence state from 1.83 to 1.39, and serves as a hydrogen-transfer bridge that promotes hydrogen migration to the *O–O intermediate. Meanwhile, hydrophobic silicalite-1 (S-1) zeolite micropores enrich dissolved H2/O2 and suppress secondary H2O2 decomposition by facilitating product desorption. The resulting in situ H2O2 generation system enables efficient Cr(VI) reduction, highlighting its potential for sustainable water remediation.
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高影响因子
MICROCHEMICAL JOURNAL
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2026
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IF 5.2
Lei Jiang,Chunli Mao,Gaojie Cheng,Hongbo Yang,Jiawen Yin,Qinghui Jin
An integrated three-electrode non-enzymatic urea sensor is developed. • The sensor exhibits a wide linear range (1–200 mg/L) and a fast response (10.8 s). • Detection potential dynamically regulates the contributions of the two urea oxidation pathways. Rapid and accurate monitoring of urea concentration in swimming pool water is critical for protecting swimmers' health and optimizing water quality management. However, traditional techniques are either expensive or operationally complex, whereas enzyme-based sensors suffer from enzyme deactivation, limiting their applicability for online monitoring. In this paper, a nickel hydroxide/nickel oxyhydroxide (Ni(OH) 2 /NiOOH) nanonetwork electrochemical sensor for non-enzymatic urea detection is proposed, which is mass-produced on a platinum electrode using microelectromechanical systems (MEMS). The electrode was activated and optimized via cyclic voltammetry by varying the scan rate. The sensor demonstrates a high sensitivity of 1.43 μA/(mg·L −1 ·cm 2 ), a wide detection range of 1–200 mg/L, a fast response time (<12 s), good repeatability with a relative standard deviation (RSD) of 1.24%, and an excellent linearity ( R 2 = 0.9988). In addition, the proposed sensor exhibits excellent anti-interference performance toward coexisting species such as creatinine, uric acid, residual chlorine, and lactic acid. Practical applications in swimming pool water samples yielded recovery rates of 92.5–100.4%, validating the sensor's robustness. Two distinct oxidation mechanisms for urea on the electrode were observed by electrochemical impedance spectroscopy (EIS). The direct pathway was further found to be potential-tunable, with its charge-transfer resistance decreasing by 35.6% upon raising the working potential from 0.45 V to 0.50 V. This work offers a promising route toward non-enzymatic urea sensors for swimming pool water monitoring. Download: Download high-res image (140KB) Download: Download full-size image
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高影响因子
Biochar
·
2026
·Vol. 8
·期 1
·113
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IF 15.1
Zhang Jian,Xie Jiafang,Zhu Shuhui,Yang Jiacheng E.,Weng Bo,Zheng Yuming
Biochar optimized with oxygen-containing functional groups is believed to be beneficial for peroxymonosulfate (PMS) activation, and biochar-loaded Co 3 O 4 -based catalysts are expected to be one of the most promising PMS activators for the efficient removal of organic pollutants. Nevertheless, the real active sites on Co 3 O 4 catalysts are still in debate due to insufficient experimental evidence. Herein, Co 3 O 4 growing on the oxygen-containing functional groups optimized rice husk biochar (RHBA) was synthesized (RHBA@Co 3 O 4 ), and RHBA800@25Co 3 O 4 + PMS system achieved complete degradation (100%) of refractory levofloxacin (LFX) within 4 min. The superior catalytic performance was suggested to be attributed not only to the uniform dispersion of Co 3 O 4 , but also to the transformation of lattice oxygen in Co 3 O 4 , which was found to play an important role in the catalytic process by inducing the formation of Co 3 O 4−α –OH. Meanwhile, density functional theory (DFT) calculations indicated that the adsorption energy ( E ads ) of PMS on Co 3 O 4−α –OH was far lower than that on Co 3 O 4 . Moreover, both radical and non-radical pathways were indicated to be involved during the degradation process. Additionally, the practical application of RHBA@Co 3 O 4 was investigated using various antibiotics, actual water environments, and fixed-bed reactors. The results showed that it possessed good practical degradation performance and significantly reduced the toxicity of intermediate products. This work provides a fresh insight into the catalytic mechanism of RHBA800@25Co 3 O 4 for PMS activation and wastewater treatment, offering a new perspective on the catalytic mechanism of Co 3 O 4 -based materials. Highlights
RHBA800@25Co 3 O 4 exhibited ultrafast antibiotics degradation via peroxymonosulfate activation.
Inspired formation of Co 3 O 4−α –OH by lattice oxygen induction was explored.
Ecological safety of levofloxacin degradation products was verified through antibacterial experiments.
Graphical The alternative text for this image may have been generated using AI.
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高影响因子
Journal of Materials Chemistry A
·
2026
·
IF 9.5
Wensong Wang,Ying Tian,Xiuwen Cao,Xiang Liu,Shizhe Cao,Deheng Chen,Weizi Jiang,Mingtao Li,Weiwei Lin,Xun Sun,Shenjie Li,Yanyan Chen
The urea oxidation reaction (UOR), with its low theoretical potential, can replace the oxygen evolution reaction (OER) at the anode in water electrolysis, thereby reducing the thermodynamic barrier of electrochemical water splitting. However, in practical UOR electrocatalysts, the adsorption competition between urea and OH⁻ constitutes a kinetic bottleneck. Conventional catalysts lack dynamic regulation means, which ultimately leads to the occurrence of competitive adsorption. In this study, we constructed a CuxS/FeS/NF heterojunction electrocatalyst via hydrothermal methods, achieving highly efficient catalysis for UOR-assisted overall water splitting. The heterojunction features an open and disordered hierarchical porous structure, significantly increasing the specific surface area and active site density (with a double-layer capacitance of 8.33 mF cm -2 ). More importantly, the reversible Cu + /Cu 2+ valence cycling on the heterojunction surface dynamically modulates urea adsorption sites, addressing the issue of OH -occupying active centers and accelerating reaction kinetics (Tafel slope as low as 26.28 mV dec -1 ). In-situ Raman tests confirm that Cu 2+ forms strong coordination with -NH₂ via empty orbitals, while Cu + weakens the adsorption of OH⁻ through high electron density; the two species synergistically accelerate the reaction kinetics. Electrochemical tests reveal that in the UOR||HER system, CuxS/FeS/NF only requires a potential of 1.35 V vs. RHE to achieve a current density of 10 mA cm -2 , while for the HER, it needs merely 78 mV to reach the same current density. When applied to UOR-assisted overall water splitting in a 1 M KOH + 0.33 M urea electrolyte, the system requires only 1.440 V vs. RHE cell voltage to deliver a current density of 50 mA cm -2 and maintains stable operation for 60 hours, with a urea degradation rate of 66.4% after 20 hours. This work, through the dynamic regulation mechanism of copper valence cycling, provides a novel approach for designing UOR catalysts with both high activity and stability, holding significant application potential in low-energy hydrogen production and wastewater treatment.
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高影响因子
APPLIED SURFACE SCIENCE
·
2026
·
IF 6.9
Yifei Huang,Hongliang Dai,Hongye Bai,Weiqiang Fan
Biomass materials as an abundant renewable resource could replace traditional fossil fuels and non-renewable materials, providing a new solution to achieve sustainable development. In this paper, Ce-modified Co(OH) 2 /Cu 2 O composite catalysts were prepared by an electrodeposition method, and the CoOOH/CuOOH dual active sites were successfully obtained through an electrochemical reconfiguration strategy, and the experimental results showed that the incorporation of Ce induced the formation of high-valent Co and Cu species, which improved the activity of electrocatalytic HMF oxidation. At 0.55 V vs Hg/HgO, the HMF conversion reached 100%, the FDCA yield was 95.04% and the Faraday efficiency was up to 98.47%. These results confirm the effectiveness of Ce-based non-precious metal catalysts in electrochemical reconstruction strategies and demonstrate their potential application in the high-value conversion of biomass derivatives. This finding not only provides a solid research basis for the development of highly efficient catalysts, but is also expected to promote the development of related technological fields.
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高影响因子
ELECTROCHIMICA ACTA
·
2012
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IF 3.832
Huihui Wang,Shilin Zhou,Zhigang Wang,Shanling Xu,Song Dong,Yuqing Miao
Electrochemical conversion of metal hexacyanoferrates into their oxides or hydroxides was successfully achieved and reported using nickel hexacyanoferrates (Ni-HCF). Herein, a versatile strategy for such a conversion was explored by potential cycling Ni(OH) 2 nanoparticle film modified electrodes in K 3 [Fe(CN) 6 ] or K 4 [Fe(CN) 6 ] solution. The results show that K 3 [Fe(CN) 6 ] is more prone to the conversion from Ni(OH) 2 to Ni-HCF. Their composition , morphology, and structure were characterized by the techniques such as scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FTIR) and UV–vis spectrometry . The reaction mechanism is tentatively given. This strategy is also suitable for the other metal hydroxides including rare earth hydroxides such as neodymium, samarium etc.
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危险品化学品经营许可证（带存储）