Journal of Energy Storage
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2026
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IF 10.7
Yongbo Liu,Yang Chen,Limei Song,Jianhua Gao
In the field of electrochemical energy storage, polyanionic compounds exhibit outstanding electrochemical performance owing to their stable crystal structures and tunable operating potentials. Among these, vanadium-based phosphates stand out and have been extensively investigated. In this work, a novel polyanionic compound, Na 3 V(OH)(HPO 4 )(PO 4 ), was synthesized by a simple one-step hydrothermal method. Its crystal structure, confirmed by Rietveld refinement of the X-ray diffraction data, can accommodate sodium ions and provide open interstitial pathways to facilitate Na + diffusion, suggesting its potential as a cathode material for sodium-ion batteries (SIBs). Bond valence sum analysis and density functional theory calculations further validated the high Na + ion transport efficiency within the framework. Based on these findings, a half-cell was assembled using the as-prepared material as the cathode and metallic sodium as the anode. Electrochemical tests demonstrated excellent reversible cycling stability and rate capability, underscoring the promise of Na 3 V(OH)(HPO 4 )(PO 4 ) as a high-performance cathode candidate for SIBs.
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CHEMICAL ENGINEERING JOURNAL
·
2026
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IF 13.2
Lu Zheng,Saisai Ju,Xiong Li,Yongde Ma,Hongwei Zhang,Zhenping Cai,Yanning Cao,Kuan Huang,Lilong Jiang
Efficient capture of residual NH₃ from Haber-Bosch recycling gas is essential to improve process efficiency and reduce environmental impact. In this study, a series of sulfonated porous organic polymers (PTO-1S, PTT-1S, PTF-1S) were fabricated by a post-sulfonation strategy using phenolic hydroxyl-containing precursors to capture NH 3 . Comprehensive characterizations of the sulfonated derivatives demonstrated not only the successful grafting of –SO₃H groups, but more importantly, a cooperative effect with the native phenolic –OH groups. The optimized PTO-1S achieves an outstanding NH₃ capacity of 11.52 mmol/g (at 298.2 K and 1 bar), with particularly impressive performance at low pressures (5.56 mmol/g at 313.2 K and 0.03 bar), surpassing most reported adsorbents. Mechanistic studies revealed that this cooperation creates an optimal balance of strong chemisorption (–SO₃H) and reversible hydrogen bonding (–OH), which is identified as the origin of the high capacity and exceptional cycling stability (< 1% capacity loss/cycle). Besides, the sulfonated samples maintain excellent selectivity under simulated industrial conditions (NH₃/N₂/H₂ mixtures) and a rapid adsorption rate (90% saturation within 2 min), demonstrating their potential for practical NH₃ recovery applications.
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JOURNAL OF MATERIALS SCIENCE
·
2022
·Vol. 57
·期 44
·20580-20588
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IF 4.682
Yan Jingjing,Zhu Chengwei,Liu Baohua,Shu Ruiwen
A facile synthetic route based on the assistance of magnetic field is reported to fabricate core–shell CoB@Co(OH) 2 nanochains for purpose of the high conductive pathway and enhanced pseudocapacitance in 3 M LiOH electrolyte. By adjusting the loading amount of the shell Co(OH) 2 nanosheets anchored on the core CoB alloy surface, the typical core–shell CoB@Co(OH) 2 is endowed with the appropriate pore volume of 0.27 cm 3 g −1 and the high accessible electrode/electrolyte interfacial area (62.3 m 2 g −1 ) and the fast conductive highway; meanwhile taking advantages of core–shell structure can be favor for fast ion transport between the electrode/electrolyte interphase and rapid electron transfer. Benefiting from the advantageous properties, the typical CoB@Co(OH) 2 electrode exhibits a high specific capacitance of 492.8 F g −1 in three-electrode device together with good cyclic stability (90.4% capacitance retention) during continuously 5000 cycles at 2 A g −1 . This work can provide an inspiring strategy for rational designing of core–shell CoB@Co(OH) 2 , and indicate their potential energy application in alkaline electrolyte. Graphical abstract
Core–shell CoB@Co(OH) 2 electrode with rapid conductive highway achieves the broaden voltage of 0.8 V and the enhanced supercapacitive performance.
研究领域:
材料科学
·
电化学
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Journal of Materials Chemistry C
·
2024
·Vol. 12
·期 34
·13632-13638
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IF 5.7
Wenjing Tan,Xuefan Wang,Ruqing Wei,Hongbo Huang,Daqing Yang,Ying Wang,Bingbing Zhang
Nonlinear optical (NLO) crystals are crucial components in all-solid-state lasers because they expand the wavelengths of existing laser sources through laser frequency conversion. In this work, Ag2[TeO2(OH)4] was identified in tellurates using the first-principles high-throughput screening pipeline for NLO materials (FHSP-NLO). The material was successfully produced via mild aqueous solution synthesis conditions, and a single crystal of 8 × 4 × 4 mm3 in size was obtained. Ag2[TeO2(OH)4] is one of the few materials that contains the [TeO2(OH)4]2− anionic group and belongs to the non-centrosymmetric (NCS) space group. Ag2[TeO2(OH)4] exhibited balanced comprehensive performances, including a large second harmonic generation (SHG) response of about 0.84 × AgGaS2 (AGS), moderate band gap (2.73 eV) and large birefringence (0.106@1064 nm). First-principles studies revealed that the dominant units that contribute to the crystal's linear and nonlinear optical properties are Ag atoms and TeO2(OH)4 groups.
研究领域:
材料科学
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光学
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无机化学
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计算物理
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Journal of Environmental Chemical Engineering
·
2025
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IF 7.2
Panpan Wang,Meiyu Shi,Bochen Zhao,Yuan Shu,Qiang Niu,Pengfei Zhang
Carbide residue, a highly alkaline industrial solid waste generated during acetylene production, is primarily composing of Ca(OH) 2 . In this study, a top-down solid-state redispersion strategy. By synergizing mechanochemical activation with surfactant capping, we achieving the recycling of carbide residue to synthesize Ca(OH) 2 -CTAB anosheet-based desulfurization agent. The resultant material exhibits a significantly enhancing BET specific surface area (30.2 m 2 ·g −1 ) and abundant pore architecture. Comparative evaluations with Ca(OH) 2 -P123 and raw carbide residue revealing the superior performance of the Ca(OH) 2 -CTAB adsorbent, demonstrating a sulfur dioxide adsorption capacity of 2.57 mmol·g −1 is a 2-fold improvement over untreating carbide residue. Furthermore, significantly extends the fixed-bed penetration time to 43869 seconds. Comprehensive characterization through TG, FTIR, BET, SEM, TEM, and AFM elucidating the relationship between the nanosheet morphology and its exceptional desulfurization performance. This work provides a green methodology for upcycling industrial alkaline waste into functional nanomaterials for environmental remediation.
研究领域:
环境科学
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材料科学
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RESEARCH ON CHEMICAL INTERMEDIATES
·
2022
·Vol. 48
·期 8
·3347-3357
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IF 3.134
Zhang Xiangxiang,Zhou Man,Zhong Yang,Zhang Letian,Kang Jianjian,Wang Lingzhi
Co(OH) 2 modified TiO 2 (Co(OH) 2 /TiO 2 ) was fabricated by a simple precipitation method and applied as a surface enhanced Raman scattering (SERS) substrate. Using triphenylmethane dye acid blue 83 as the analyte, the SERS substrate showed high sensitivity with a detection limit of 1 × 10 –7 M and high signal reproducibility with a relative standard deviation of 8.9%. Moreover, the substrate can also be used to in situ monitor the catalytic degradation of Acid blue 83. In addition, compared with cationic triphenylmethane dye, the Co(OH) 2 /TiO 2 substrate presented stronger SERS activity towards anionic counterparts. The easy preparation and high sensitivity and selectivity towards anionic dyes of Co(OH) 2 /TiO 2 provides a robust alternative for promoting the practical application of semiconductor-based SERS substrate in selective detection.
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SEPARATION AND PURIFICATION TECHNOLOGY
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2021
·
IF 7.312
Jia Deng,Xiang Zhan,Feng Wu,Shuxian Gao,Li-Zhi Huang
Trichloroethylene (TCE), one of the most frequently detected chlorinated organic pollutants (COPs) in groundwater, has potential risks to human health. The bimetallic system consisting of zero-valent iron (ZVI) and a second catalytic metal has been widely investigated for reductive dechlorination of COPs. However, the passivation layer of ZVI inhibits the electron transfer causing a low dechlorination efficiency. In this work, we designed a novel bimetallic system using Fe(OH) 2 and Ni for fast dechlorination of TCE. The reduction efficiency of TCE reaches 94.8 % after 5 h of reaction in the Fe(OH) 2 /Ni system. TCE was completely dechlorinated to nontoxic gas products including ethylene and ethane, which was attributed to the generation of active hydrogen species (H*) in the system. The Ni 2+ cations undergo the process of hydroxylation and olation. Subsequently, electrons of Fe(OH) 2 were transferred to Ni(II) causing the formation of Ni(0). The catalytic Ni(0) sites generate H* for TCE dechlorination via catalytic reduction of H 2 O/H + . A part of Fe(II) in the Fe hydroxide layer of Fe(OH) 2 was oxidized to Fe(III) leading to the formation of green rust with a hexagonal structure. Our work demonstrates Fe(OH) 2 /Ni is a promising composite material for the remediation of TCE-contaminated groundwater.
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ENVIRONMENTAL SCIENCE & TECHNOLOGY
·
2021
·
IF 9.028
Wenjing Xie,Peng Zhang,Wenjuan Liao,Man Tong,Songhu Yuan
The potential of oxygenating Fe(II)-bearing sediments for hydroxyl radical (·OH) production and contaminant degradation has been proposed recently. Here, we further show that specific ligands can largely enhance contaminant degradation during sediment oxygenation due to increased utilization efficiency of sediment electrons. With the addition of 0–2 mM sodium ethylene diamine tetraacetate (EDTA) or sodium tripolyphosphate (TPP) in sediment suspension (50 g/L, pH 7.0), trichloroethylene (TCE, 15 μM) degradation increased from 13% without ligand to a maximum of 80% with 2 mM TPP and was much higher with TPP than EDTA because EDTA competes for ·OH. Electron utilization efficiency for ·OH production increased with increased ligand concentration and was enhanced by up to 6–7 times with 2 mM EDTA or TPP. Electron transfer from sediment to dissolved Fe(III)-ligand is mainly accountable for the enhanced electron utilization efficiency by the ligands with low adsorption affinity (i.e., EDTA), and additional variation of sediment surface Fe(II) coordination is mainly responsible for the enhancement by the ligands with high adsorption affinity (i.e., TPP). Output of this study provides guidance and optional strategies for enhancing contaminant degradation during sediment oxygenation.
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PubMed
高影响因子
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
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2020
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IF 3.306
Ting-ting Cao,Tie-fu Xu,Feng-xia Deng,Wei-wei Qiao,Chong-wei Cui
Phenolic pollutants (PPs) are regarded as hazardous pollutants, posing severe threats to humans. In this study, a vacuum ultraviolet (VUV) lamp was used to decay PPs with different functional groups, including phenol, paradioxybenzene (PDB), and p-nitrophenol (PNP). Results showed the removal rate for phenol, PDB, and PNP reached 99.78 %, 97.78 %, and 80.73 % within 60 min. Density functional theory (DFT) involving in quantum chemical descriptors (QCD), frontier molecular orbitals (FMO), thermochemical properties, and the Gibbs free energy was applied to reveal the reactivity and mechanism between ·OH and PPs with various functional groups. Results confirmed that PDB and phenol with the electron-donating group exhibited favorable reactivity, while PNP with an electron-withdrawing group presented a lower one. Furthermore, the oxidation mechanism between PPs and ·OH in the VUV system was also deeply investigated, mainly following four steps: photo-excitation, ·OH substitution, molecular rearrangement, and finally ring-opening. Among them, the required energy for the ring-opening was about 145 and 787-fold higher than that of ·OH substitution and molecular rearrangement. Results suggested that the formation of micro-fatty acids were the primary rate-controlling step.
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JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2020
·
IF 7.489
Wei Wang,Yunlei Zhong,Xinyu Zhang,Sainan Zhu,Yourong Tao,Yanxin Zhang,Hongsen Zhu,Yifei Zhang,Xingcai Wu,Guo Hong
Surface self-reconstruction by the electrochemical activation is considered as an effective strategy to increase the oxygen evolution reaction (OER) performance of transition metal compounds. Herein, uniform Co 2 (OH) 3 Cl microspheres are developed and present an activation-enhanced OER performance caused by the etching of lattice Cl − after 500 cyclic voltammetry (CV) cycles. Furthermore, the OER activity of Co 2 (OH) 3 Cl can be further enhanced after small amounts of Fe modification (Fe 2+ as precursor). Fe doping into Co 2 (OH) 3 Cl lattices can make the etching of surface lattice Cl − easier and generate more surface vacancies to absorb oxygen species. Meanwhile, small amounts of Fe modification can result in a moderate surface oxygen adsorption affinity, facilitating the activation of intermediate oxygen species. Consequently, the 10% Fe-Co 2 (OH) 3 Cl exhibits a superior OER activity with a lower overpotential of 273 mV at 10 mA cm −2 (after 500 CV cycles) along with an excellent stability as compared with commercial RuO 2 .
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PubMed
高影响因子
Micro & Nano Letters
·
2019
·Vol. 14
·期 11
·1151-1156
·
IF 0.975
Min Shi,Yanhong Li,Hongtao Cui
A facile strategy for the preparation of composites with homogeneous distribution of multi-walled carbon nanotubes (MWCNTs) in Ni(OH) 2 was proposed. The electrostatic attraction between positively charged Ni(OH) 2 monolayer nanosheets and negatively charged MWCNTs was utilised to self-assemble the composites. The results of electrochemical measurement on the composite containing 30 wt% MWCNTs indicated that the homogeneous composition of MWCNTs in composite significantly reduced the electrical resistance and promoted the electrochemical utilisation of Ni(OH) 2 . As a result, the composite presented high electrochemical performance: having specific capacitance of 1568.8 F g −1 at low current density of 2.4 A g −1 and keeping a relatively high specific capacitance of 781.8 F g −1 at high current density of 81.7 A g −1 . Based on the results in this works, it is hoped that the adopted strategy could provide a promising idea for the preparation of composites with homogeneous distribution of individual components.
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INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
·
2022
·
IF 7.139
Yuyu Li,Fang Luo,Yuhua Xie,Chaofeng Chang,Ming Xie,Zehui Yang
Urea oxidation reaction (UOR) is a promising substitution of oxygen evolution reaction (OER) in overall water splitting technology because of the lower theoretical potential; thereby, a win-win benefit is achieved due to the simultaneous hydrogen generation and water purification . The efficient UOR catalysis substantially depends on the exposed active sites and mass transfer resistance, especially at high current density to meet the requirement of industrial water splitting technology. In this work, we have synthesized α-Ni(OH) 2 porous nanoflowers (α-Ni(OH) 2 –PNF) using ZIF-67 as template. Ascribing to the Kirkendall effect , nanopores are created on α-Ni(OH) 2 nanosheets benefiting for the formation of abundant oxygen vacancies as well as drop-off in mass transfer resistance during UOR catalysis. Meanwhile, the binding strength between active site and CO 2 , rate-determining step of UOR, is weakened by oxygen vacancies; as a result, only 1.477 V vs. RHE is demanded for α-Ni(OH) 2 –PNF to catalyze UOR with 100 mA cm −2 , 67 mV lower than α-Ni(OH) 2 nanosheets. Besides, an exceptional stability is also achieved for α-Ni(OH) 2 –PNF with negligible degradation during 20 h catalysis.
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