CATALYSIS TODAY
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2025
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IF 5.3
Yaoyi Hu,Xiqiang Yuan,Zhengquan Zhang,Yu Zhang,Han Ma,Yunfei He,Shaoyun Shan,Tianding Hu
Natural borneol has enormous medicinal value (like clearing heat, detoxifying, relieving pain, and other effects) but has a low yield and high price. Compared with the natural extraction method to obtain borneol, a synthetic method has significant advantages such as high yield, environmental protection, and high economic benefits. In the synthesis method, the catalyst is the most key factor. In this study, two catalysts (SO 4 2- /ZrO 2 -TiO 2 and Al 2 (SO 4 ) 3 /ZrO 2 -TiO 2 ) with high catalytic performance and high positive selectivity were synthesized by impregnation method to synthesize borneol from α-pinene. The optimum synthesis conditions of SO 4 2- /ZrO 2 -TiO 2 were as follows: n(Zr): n(Ti) = 3: 1, sulfuric acid concentration 2 mol/L, calcination temperature 550 °C, the yield of borneol was 68.14 %. Based on the preparation of catalyst SO 4 2- /ZrO 2 -TiO 2 , the optimum synthesis conditions of Al 2 (SO 4 ) 3 /ZrO 2 -TiO 2 were as follows: the concentration of aluminum sulfate was 0.4 mol/L, the calcination temperature was 600 °C, and the yield of borneol was 74.58%, Compared with the highest yield of 59.89% reported in the existing literature, the performance is improved by 13.96%. In addition, the mechanism of the esterification and saponification reaction of borneol has been in the blank stage. We used the density functional theory (DFT) to explore the reaction mechanism.
研究领域:
有机化学
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催化化学
·
药物化学
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高影响因子
Energy Storage Materials
·
2024
·
IF 18.9
Zhilin Zheng,Xiaoqiao Li,Yong Wang,Yunlong Zhang,Yufeng Jiang,Yu-Shi He,Chao Niu,Haiying Che,Linsen Li,Zi-Feng Ma
Air stability is a crucial factor in the practical application of a battery material, as it profoundly affects the material's preparation, storage, and electrode fabrication processes. Sodium iron sulfate cathodes, despite their attractive attributes in cost and electrochemical performance, are widely believed to be unstable upon air exposure because of the sulfate group. Here we report remarkable air-stability of the Na 2 Fe(SO 4 ) 2 -based (NFS) cathodes (minimal decay in 20 % RH air for 60 days, 91.9 % capacity retention after 3500 cycles in half cells) and their outstanding cycle performance in practically relevant pouch-type full cells (∼100 Wh kg -1 specific energy, >1000 cycle-life). Although the NFS cathodes do react with moisture H 2 O to produce Na 2 Fe(SO 4 ) 2 ⋅4H 2 O but the hydration is spatially confined at the NFS particles’ surface and not propagating into their bulk. Further, the structural changes are reversible when the surface-hydrated NFS particles are heated in the typical electrode vacuum-drying process, avoiding extra treatment and additional cost. This work reveals the promising properties of the NFS cathode materials towards high-performance and sustainable Na-ion batteries.
研究领域:
材料科学
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电化学
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高影响因子
ACS Nano
·
2026
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IF 16
Jingjing Hou,Shizhong Lv,Jian Liu,Jiaji Tang,Yuwei Wang,Lirui Liu,Zaohui He,Gang Sun,Ai-Min Lv,Liang Deng,Yunlong Zhang,Lei Zhao,Zhenbo Wang
Sodium-ion batteries hold promise for grid-scale energy storage thanks to abundant resources and superior safety, but their wide-temperature operation is hindered by sluggish electronic–ionic transport and structural instability of cathode materials. Herein, a cation-intermixing strategy driven by stoichiometric regulation is proposed for Na2+2xFe2–x(SO4)3 cathodes, which can simultaneously enhance structural stability, improve charge transfer, and facilitate Na+ transport kinetics. Specifically, derived Fe vacancies and concomitant Na+ insertion reconstruct the electronic environment, strengthening Fe–O bonds to stabilize the crystal framework while optimizing Fe 3d electron energy level distribution to facilitate charge transfer. This alteration concurrently widens Na+ migration channels and reduces diffusion barriers, enabling rapid ion transport. Consequently, the Na2.48Fe1.76(SO4)3 cathode (x = 0.24 in Na2+2xFe2–x(SO4)3, with a Na/Fe molar ratio of 1.4) with optimal cation intermixing exhibits exceptional wide-temperature performance. It delivers 85.9% capacity retention following 3000 cycles at 30 C (25 °C) and 88.3% following 4000 cycles at 1 C (−20 °C). Even at an ultrahigh 100 C (60 °C), it still retains 83.2% relative to its capacity measured at 25 °C and 0.1 C. This work provides a stoichiometry-driven approach to designing superior-performance sulfate-based cathodes for wide-temperature sodium-ion batteries.
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PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2022
·
IF 16.744
Yuzhen Zheng,Huijun Xie,Bo Sun,Jian Zhang,Wenxing Wang
A significant loss of the treatment efficiency induced by Cl − is a well-recognized drawback of the SO 4 ·− -based AOPs and various mathematical model have been established to achieve quantitative prediction of the treatment efficiency of SO 4 ·− -based AOPs at different levels of Cl − . However, the background water constituents (e.g., ammonia and dissolved organic matter (DOM)) complicate the chemistry of Cl − /SO 4 ·− system and disable these models. This study shows that the degradation of sulfamethoxazole and bisphenol A by Co 2+ /PMS process decreased with dosing Cl − at fresh water level, due to the shifted distribution of reactive species from SO 4 ·− to Cl 2 ·− , ClO · and HOCl. Besides quenching radicals, HOCl also contributed to pollutant degradation. Though ammonia alone negligibly influence the Co 2+ /PMS process, ammonia reacts with the in situ formed HOCl in the Cl − /SO 4 ·− process rapidly along with the generation of chloramine which mainly severed as radical scavenger rather than oxidant. Consequently, more severe efficiency loss of the SO 4 ·− -based AOPs occur in the copresence of ammonia and Cl − . Unexpectedly, the efficiency loss was alleviated after dosing DOM, which was attributed to the suppressed formation of chloramine. The occurrence of chlorate and disinfection by-products are not concerns in the Co 2+ /PMS process when Cl − coexists with ammonia and DOM, because of the decreased formation of HOCl. These results enhance our understanding of the complex chemistry of SO 4 ·− -based AOPs in real water and promote the progress of SO 4 ·− -based AOPs towards the niche applications in water treatment.
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JOURNAL OF ALLOYS AND COMPOUNDS
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2017
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IF 3.133
Chuanling Sun,Dajiang Mei,Jingli Xu,Yuandong Wu
Two new mixed bismuth (III) tellurite nitrate/sulfate, H[Bi 3 O(Te 3 O 9 )](NO 3 ) 2 and [Bi 2 (TeO 3 ) 2 ](SO 4 ) were synthesized under hydrothermal conditions. H[Bi 3 O(Te 3 O 9 )](NO 3 ) 2 crystallizes in the hexagonal space group P 6 ¯ 2 m (No. 189) with lattice parameters a = 9.8465(4), b = 9.8465(4), c = 4.1917(4) Å, V = 351.95(4) Å 3 , Z = 1, while [Bi 2 (TeO 3 ) 2 ](SO 4 ) crystallizes in the monoclinic space group C 2/ c (No. 15) with lattice parameters a = 15.7657(13), b = 7.4285(5), c = 8.0959(6) Å, β = 112.693(2) ° , V = 874.75(11) Å 3 , Z = 4. The structure of H[Bi 3 O(Te 3 O 9 )](NO 3 ) 2 features one-dimensional cationic 1 ∞ [Bi 3 O(Te 3 O 9 )] + chains along c axis, which are composed of [BiO 7 ] and [TeO 4 ] polyhedra by sharing corners and edges, whereas [Bi 2 (TeO 3 ) 2 ](SO 4 ) possesses a new three-dimensional framework consisting of two-dimensional zigzag layers of 2 ∞ [Bi 2 (TeO 3 ) 2 ] 2+ that are linked by SO 4 2- anions. Title compounds were characterized by single-crystal X-ray diffraction, powder X-ray diffraction, Raman spectra, infrared spectra and solid state UV-vis-NIR diffuse reflectance spectroscopy .
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高影响因子
JOURNAL OF MEMBRANE SCIENCE
·
2024
·
IF 8.4
Yunhuan Chen,Xinyue Liu,Rui Zhang,Weier Wang,Hailong Wang,Yongsheng Ren,Xiaoxiao Duan
High permselectivity and antifouling/self-cleaning nanofiltration (NF) membranes are ideal materials for water treatment, and this vision is expected to be reached through the design of multifunctional self-cleaning interfaces. In this study, we employed metal - polyphenol network (MPN) to mediate in situ mineralization of porous substrates, enabling simultaneous modulation of interfacial polymerization (IP) and catalytic self-cleaning. The findings demonstrate that the mineralized layers employ an interlayer modulation strategy to produce a polyamide (PA) layer that is more hydrophilic, thinner, and structurally denser. As a result, the resulting PA-Fe 3 O 4 -PSF membrane exhibited a 2.5-fold increase in permeance (19.2 L m −2 h −1 bar −1 ) and a 7.3-fold enhancement in Cl − /SO 4 2− selectivity (66.4), compared to the control membrane (PA-PSF). Additionally, its highly polarized membrane surface significantly improved its antifouling performance. Compared to membranes with mineralized layers on the surface (Fe 3 O 4 -PA-PSF), PA-Fe 3 O 4 -PSF constructs a confined space that facilitates more efficient regeneration through in situ catalytic self-cleaning and ensures greater stability during multiple fouling-regeneration cycle operations. This study paves the way for fabricating multifunctional NF membranes with sustainable applications in material concentration, wastewater treatment, and environmental remediation.
研究领域:
水处理
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膜科学
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材料科学
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环境工程
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高影响因子
Energy Storage Materials
·
2026
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IF 19.3
Xizhao Wang,Xingshuang Wu,Fenghua Zheng,Lang Zhao,Hongbo Chen,Min Tang,Xinyou He,Wei Xu,Xiangdong Zhu,Zhiming Xiao,Xinghui Liang,Lei Ming,Xing Ou
Alluaudite-type Na 2+2x Fe 2−x (SO 4 ) 3 is considered as a promising cathode for large-scale energy storage due to its high structural stability and cost-effectiveness. However, due to low theoretical specific capacity, NFS still exhibits insufficient overall cost competitiveness, and it also suffers from low intrinsic electrical conductivity. Here, we propose a direct regeneration strategy based on industrial byproducts to prepare a low-cost and high-conductivity Na 2.56 Fe 1.65 Mg 0.05 Mn 0.014 Al 0.006 (SO 4 ) 3 cathode. Compared to traditional synthetic routes for pure compounds, the direct degeneration of industrial byproducts can reduce iron source costs by approximately 83%. In addition, Mg, Mn and Al impurities from industrial byproducts are in situ doped into the polyionic framework, achieving functionalized utilization. Mg/Mn/Al co-doping not only induces strong interactions with oxygen to stabilize the crystal structure, but also decreases Na + migration energy barriers and enhances the electrical conductivity. Na 2.56 Fe 1.65 Mg 0.05 Mn 0.014 Al 0.006 (SO 4 ) 3 exhibits low lattice strain and uniform ion concentration distribution during electrochemical processes, demonstrating excellent rate capability and cycling stability. It shows 100% capacity retention after 1500 cycles at 3 C, and delivers a high discharge capacity of 50.16 mAh g −1 at 30 C. This study provides a scalable route for the valorization of industrial waste and the development of low-cost, high-performance polyanionic cathodes for sodium-ion batteries.
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高影响因子
PHYSICAL REVIEW B
·
2025
·Vol. 111
·期 13
·134401
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IF 3.7
M. Y. Cui,Z. Y. Zhao,Z. Y. Wu,J. F. Wang,Z. Z. He
Chemical substitution is an effective route to manipulate the magnetic exchange couplings and modify the magnetic properties. However, replacement between ${\mathrm{Cd}}^{2+}$ and ${\mathrm{Hg}}^{2+}$ cations, both belonging to IIB group in the periodic table but having quite close ionic radii, is rarely studied. In this work, the chemical-pressure effect in $A{\mathrm{Co}}_{2}({\mathrm{Te}}_{3}{\mathrm{O}}_{8})({\mathrm{SO}}_{4})\phantom{\rule{4pt}{0ex}}(A=\mathrm{Hg},\mathrm{Cd})$ is reported, which is an $S=1/2$ structural screw-chain antiferromagnetic series with two unique Co positions. Magnetic susceptibility, specific heat, and high-field magnetization measurements on both polycrystal samples suggest that Hg compound experiences two successive antiferromagnetic transitions at ${T}_{\mathrm{N}1}=25.5\phantom{\rule{4pt}{0ex}}\mathrm{K}$ and ${T}_{\mathrm{N}2}=21.5\phantom{\rule{4pt}{0ex}}\mathrm{K}$ in zero field, and multiple field-induced transitions at ${B}_{1}=10.5\phantom{\rule{4pt}{0ex}}\mathrm{T}, {B}_{2}=13\phantom{\rule{4pt}{0ex}}\mathrm{T}$, and ${B}_{3}=19.5\phantom{\rule{4pt}{0ex}}\mathrm{T}$ at 1.6 K. By contrast, a single magnetic transition takes place at ${T}_{\mathrm{N}}=20$ K and ${B}_{\mathrm{c}}=10.7\phantom{\rule{4pt}{0ex}}\mathrm{T}$ in Cd compound. Different twists of ${\mathrm{CoO}}_{6}$ octahedra are discussed to be responsible for the distinct magnetic behaviors. To further understand the influence of the chemical pressure, additional anisotropic characterizations are performed on Hg single crystal and subsequently the magnetic field $\mathrm{versus}$ temperature phase diagrams are established. Large magnetic anisotropy is observed with the moments lying within the $bc$ plane. Besides, a possible field-induced order-disorder transition is uncovered under the application of a magnetic field along the $b$ axis. The opposite features of the anisotropic magnetic susceptibility in Hg compound might demonstrate separate antiferromagnetic orders of the two Co sublattices, the discrepancy of which is reduced due to the weakened twist of ${\mathrm{CoO}}_{6}$ octahedra in Cd compound, leading to a simultaneous occurrence of these transitions instead.
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高影响因子
Journal of Environmental Chemical Engineering
·
2026
·Vol. 14
·期 3
·122309
·
IF 7.5
Hongjiang Peng,Yanyu Song,Cong Lu,Gongjie Hua,Jinhong Wu,Kuangfei Lin
Advanced oxidation processes based on peroxymonosulfate (PMS) activation show promising application prospects in the field of water treatment, yet the efficient utilization of reactive oxygen species (ROS) in different spatial regions (bulk solution and catalyst surface) remains challenging. In this work, a catalyst consisting of trace cobalt ion-complexed hydroxyapatite (Co-HAP) was prepared, which exhibits excellent spatial synergistic oxidation effects. Bulk SO 4 •− and in-situ generated surface •OH ensure the efficient removal of levofloxacin (LEV) (74.5% within 20 min). Quenching experiments reveal the surface-mediated ROS evolution pathway, where bulk SO 4 •− reacts with the abundant lattice hydroxyl groups (-OH) on the HAP surface to in-situ generate surface-bound hydroxyl radicals (•OH surf ). Bulk SO 4 •− originates from the activation of PMS by Co ions. Electrochemical characterization and charge density difference simulation confirm that PMS receives electrons from the catalyst, thus inducing the breakage of O-O bonds to generate SO 4 •− . Therefore, bulk SO 4 •− is responsible for attacking dissolved pollutants, while LEV adsorbed on the catalyst surface is "precisely targeted" by surface-confined •OH. This "two-pronged" synergistic strategy significantly reduces mass transfer resistance and achieves efficient utilization of ROS, thereby the degradation rate ( k obs value) of LEV by Co-HAP is 4.6 times that by Co ions alone. Moreover, the Co-HAP system exhibits excellent stability and promising anti-interference ability. This study provides new insights into the positive role of carrier surface functional groups in regulating ROS distribution and evolution in heterogeneous catalysis.
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高影响因子
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
·
2019
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IF 3.375
Sheying Dong,Qian Zheng,Guiqi Huang,Xiaohong Wang,Tinglin Huang
A new method based on coordination polymer [Cu(bipy)(SO4)]n (CP) and functionalized CP, which have a low cost and a easy preparation for selective removal of two organic pollutants in aqueous solution was proposed. Experimental results indicated that CP had excellent adsorption capacity for Alizarin red S (ARS) (1051 mg g–1) and Acid orange 7 (AO7) (989 mg g–1) by ion-exchange interaction. It was found that the kinetic and equilibrium adsorptions were well-modeled using the pseudo-second-order kinetic and the Langmuir isotherm model, respectively. Furthermore, the anionic surfactant (sodium dodecyl sulfonate, SDS) was introduced into the chain structure of CP by anionic exchange to form functionalized CP material (CP/SDS) to remove another type of organic pollution which was representative fluoroquinolone antibiotics like Enrofloxacin (EF), Sparfloxacin (SF), and Levofloxacin lactate (LL) from aqueous solution. Several conditions affecting the removal efficiency of three antibiotics including the composition ratio of SDS in adsorbent, pH, adsorbent dosage, and ionic strength were investigated. Due to the hydrophobic effect of the long methylene chain units in SDS molecular and cyclopropyl, phenyl and alkyl groups in antibiotics, the CP/SDS adsorbent have remarkable adsorption capacity for three antibiotics compared to some commercially available adsorbents, and it requires only 10 min to reach adsorption equilibrium. Thus, the results of this work demonstrate that CP and functionalized CP as the promising adsorbent materials can selectively remove two types of organic pollutants from aqueous solution. In the meantime, it exhibits the alternative exploitation approach for one-dimensional CP in environmental applicability.
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高影响因子
Journal of Cleaner Production
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2019
·
IF 6.395
Taotao Qiang,Qi Zhang,Liang Chen
Down fibers is the most popular filling material and widely applied in daily life products such as homes, apparel and sporting gear due to its features of being natural, soft and warm keeping. The fluffiness is quite important to reflect the excellent performance of down fibers. However, owing to the short feeding cycle of poultry, the high content of immature down fibers leads to low fluffiness, which affects the quality of down fibers. In our work, the down fibers with amount of maximum raw materials and the fluffiness of 450 cm 3 /30 g were taken as the research samples. Clean and efficient alkaline zirconium sulfate was used as fluffing agent of down fibers. The cost of using alkalized zirconium sulfate treatment is relatively cheap compared with the traditional fluffing agent glutaraldehyde. Different doses of alkalized zirconium sulfate were used to cross-link the natural down fibers to improve the fluffiness. The results showed that when the dosage of alkalized zirconium sulfate was 2% of the weight of fibers, the performance of down fibers were the best and the fluffiness increased by 25%. It has a good practical significance to improve the economic benefits of down manufacturers. Meanwhile, the down fibers treated with alkalized zirconium sulfate were characterized by Energy dispersive spectrometer (EDS), X-ray diffractometer (XRD), Differential scanning calorimetry (DSC) and the changes of free amino content. Furthermore, measurement of zirconium ion concentration in wastewater by ICP showed that alkaline zirconium sulfate has achieved high absorption efficiency. Moreover, ultra depth microscope observation showed that the down fibers treated with alkalized zirconium sulfate have a better dyeing performance compared to untreated fibers. Overall, this work contributed a new insight into the sustainable development of down industry, and it further confirmed that it is a good approach to use the alkalized zirconium sulfate as the fluffing agent to improve the performance of down fibers.
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高影响因子
APPLIED SURFACE SCIENCE
·
2020
·
IF 6.182
Xiaojun Guo,Yanan Xu,Fei Zha,Xiaohua Tang,Haifeng Tian
Hematite (α-Fe 2 O 3 ), as one of Fenton reagents, is widely investigated for the treatment of wastewater in the field of advanced oxidation processes (AOPs). Considering the fast charge carrier recombination of hematite (α-Fe 2 O 3 ), we have successfully synthesized a novel and high active heterogeneous Fenton catalyst α-Fe 2 O 3 /Cu 2 O(SO 4 ) for the degradation of organic pollutants. The results show that the as-obtained Cu 2 O(SO 4 )-Fe9 composite exhibits excellent degradation properties of Orange II. 98.9% degradation rate was achieved for 100 mL of 50 mg/L Orange II solution in the condition of 0.3 g/L Cu 2 O(SO 4 )-Fe9 catalyst, 3 mM H 2 O 2 and pH = 3.5. The degradation rate constants of Cu 2 O(SO 4 )-Fe9 in the photo-Fenton-like system are 9.33 and 4.07 times of Cu 2 O(SO 4 ) and α-Fe 2 O 3 , respectively. In addition, the mechanism and pathway for the degradation of Orange II were proposed. The scheme of combining copper-based oxysulfate Cu 2 O(SO 4 ) with hematite (α-Fe 2 O 3 ) could improve the efficiency of charge carrier separation, which will further enhance the catalytic activity and expand its application in water purification.
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高影响因子
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