Nano Energy
·
2022
·
IF 19.069
Chaohui Tian,Chenhui Bai,Tao Wang,Zhifeng Yan,Zhiyi Zhang,Kai Zhuo,Hulin Zhang
Thermoelectric hydrogels can be used as energy conversion devices to convert low-grade heat into practical electricity for sustainable energy supply. However, current redox couple-based thermogalvanic gel electrolytes contain toxic metal elements, limiting their non-toxic and environmentally sustainable development. Here, a stretchable, flexible gel thermoelectric device is created by introducing a novel non-toxic redox couple of SO 4 2- /SO 3 2- for the first time, which exhibits a high Seebeck coefficient ( S e ) of 1.63 mV K −1 at the optimal redox couple concentration of 0.1 M. The tensile/compressive stress and deformation at break of the hydrogel electrolyte achieves a superior index due to the hybrid structure formed between PEDOT: PSS and SO 4 2- /SO 3 2- ion-promoted crosslinking PVA network. By subtly doping additional electrolyte ions , the gel affords a favorable ionic conductivity and thermoelectric performance. Furthermore, this PVA-SO 4/3 2- hydrogel shows the capacity of harvesting biothermal energy for operating small electronics at body temperature. This work breaks with conventional redox couples and represents a step towards green sustainable self-powered wearables using a new redox couple with a favorable thermoelectric performance.
研究领域:
材料科学
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能源技术
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环境科学
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产品关联
DOI
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2022
·
IF 5.518
Yan Yi,Xiangyu Wang,Yaxian Zhang,Jun Ma,Ping Ning
The aquatic plant Egeria najas based biochar was innovatively constructed by modifying it with Fe 2 (SO 4 ) 3 (Fe 2 (SO 4 ) 3 @EN-BC) for Cr(VI) removal. The characterizations of Fe 2 (SO 4 ) 3 @EN-BC confirmed that Fe 2 (SO 4 ) 3 was attached to biochar in form of Fe 2 O 3 after hydrolysis and calcination under high temperature. The results showed that Fe 2 (SO 4 ) 3 @EN-BC had a high removal efficiency of Cr(VI) with approaching 99.88%, which was about 7 times higher compared to unmodified biochar (EN-BC). Batch experiments of Cr(VI) removal included initial concentration, reaction temperature, solution pH and kinetics were conducted. The adsorption kinetics could be more accurately explained using pseudo-second order kinetics model , indicating the chemical adsorption controlled the reaction process. According to the Langmuir model, the maximum adsorption capacities for Cr(VI) were 138.79, 159.36 and 190.91 mg/g at 298, 313 and 333 K, respectively. Moreover, based on FTIR and XPS results, the Fe 2 (SO 4 ) 3 @EN-BC surface was loaded with many functional groups conducive to Cr(VI) adsorption. The main removal mechanisms of Cr(VI) by Fe 2 (SO 4 ) 3 @EN-BC included adsorption and reduction, and the percentage of Cr(VI) removed by adsorption and reduction were 19.1% and 80.9%, respectively.
研究领域:
环境科学
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材料科学
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产品关联
DOI
高影响因子
IONICS
·
2018
·Vol. 25
·期 6
·2585-2594
·
IF 2.347
Meng Fanbo,Guo Huajun,Wang Zhixing,Wang Jiexi,Yan Guochun,Wu Xianwen,Li Xinhai,Zhou Lijiao
A series of layered Li[Li 0.2 Mn 0.54 Ni 0.13 Co 0.13 ]O 2 cathode materials, of which manganese source was electrolytic manganese dioxide, with different contents of SO 4 2− were successfully synthesized via ball-milling process and solid-state sintering method. The obtained materials were characterized by XRD, XPS, SEM-EDS, C-S, ICP, and HR-TEM. All the obtained materials presented well-ordered layered structure. When the content of SO 4 2− was below 1.30 wt%, the electrochemical properties and structural stabilities at low rate for the layered materials with SO 4 2− were not changed dramatically, while when the content of SO 4 2− increased to 5.85 wt%, the initial discharge capacities decreased dramatically from 248.24 to 209.23 mAh g −1 at 10 mA g −1 . And the pristine sample shows excellent cyclic property and rate capability. It delivered the discharge capacity of 175.25 mAh g −1 after 100 cycles with the highest capacity retention of 90.67% at 200 mA g −1 . Particularly, the treated Li-rich Mn-based materials with the highest amount of SO 4 2− exhibited the best cyclic stability and it delivers the highest capacity retention of 95.17% after 100 cycles at 200 mA g −1 . However, its discharge capacities were much lower than the pristine material. As a result, the addition of SO 4 2− could promote side reactions between electrode and electrolyte and deep-degree corrosion of electrode materials to affect the electrochemical properties and structural stabilities of the Li-rich Mn-based materials.
研究领域:
材料科学
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电化学
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能源存储
✓ 已验证
DOI
高影响因子
FUEL
·
2022
·
IF 8.035
Xiaodi Li,Shan Ren,Lian Liu,Xiangdong Xing,Lin Chen,Jiangling Li,Jian Yang,Qingcai Liu
The serious deactivation of denitration catalysts caused by heavy metals still a thorny issue in the practical application of selective catalytic reduction of NO x with NH 3 . Herein, we proposed a novel anti-poisoning strategy by designing SO 4 2− /ZrO 2 superacid supported CeO 2 /ZrO 2 catalyst, and the effect of SO 4 2− /ZrO 2 supported CeO 2 /ZrO 2 for PbO-resistance NO x catalytic reduction was investigated. It was worthy to note that the introduction of solid superacid SO 4 2− /ZrO 2 significantly enhanced catalytic performance over the entire temperature range, with an exceptionally high NO x removal efficiency over 98 % during 250–500 °C. When 2 wt% PbO was deposited on the fresh catalyst, the catalytic activity of CeO 2 /ZrO 2 catalyst decreased obviously, while CeO 2 /ZrO 2 -S catalyst can still maintain a higher NO x conversion over 90 % from 275 to 500 °C. The characterization results confirmed that the introduction of solid superacid SO 4 2− /ZrO 2 enhanced the surface acidity and promoted the transformation from Ce 4+ to Ce 3+ . The results of in situ DRIFTS implied that the Eley-Rideal (E-R) mechanism was obeyed over CeO 2 /ZrO 2 catalyst, and both Eley-Rideal (E-R) and Langmuir-Hinshelwood (L-H) mechanisms were followed over CeO 2 /ZrO 2 -S catalyst in the SCR process. With regard to poisoned catalysts, the NH 3 adsorption was inhibited to some extent, while the reaction mechanism wasn’t changed by PbO poisoning.
研究领域:
催化
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环境科学
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化学工程
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产品关联
DOI
高影响因子
Catalysts
·
2024
·Vol. 14
·期 5
·311
·
IF 3.8
Changzhao Chen,Zhe Yuan,Shenshen Sun,Jiacai Xie,Kunfeng Zhang,Yuanzheng Zhai,Rui Zuo,Erping Bi,Yufang Tao,Quanwei Song
Soil contamination by polycyclic aromatic hydrocarbons (PAHs) has been an environmental issue worldwide, which aggravates the ecological risks faced by animals, plants, and humans. In this work, the composites of nanoscale zero-valent iron supported on carbonylated activated carbon (nZVI-CAC) were prepared and applied to activate persulfate (PS) for the degradation of PAHs in contaminated soil. The prepared nZVI-CAC catalyst was characterized by scanning electron microscopy (SEM), X-ray diffractometer (XRD), Fourier transform infrared spectroscopy (FTIR), and X-ray photoelectron spectroscopy (XPS). It was found that the PS/nZVI-CAC system was superior for phenanthrene (PHE) oxidation than other processes using different oxidants (PS/nZVI-CAC > PMS/nZVI-CAC > H2O2/nZVI-CAC) and it was also efficient for the degradation of other six PAHs with different structures and molar weights. Under optimal conditions, the lowest and highest degradation efficiencies for the selected PAHs were 60.8% and 90.7%, respectively. Active SO4−•and HO•were found to be generated on the surface of the catalysts, and SO4−•was dominant for PHE oxidation through quenching experiments. The results demonstrated that the heterogeneous process using activated PS with nZVI-CAC was effective for PAH degradation, which could provide a theoretical basis for the remediation of PAH-polluted soil.
研究领域:
环境科学
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化学工程
·
土壤修复
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产品关联
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2026
·
IF 9.1
Kaijie Pei,Hang Lyu,Ai-Bo Jia,Rong Zhong,Chuping Chang,Xiaosi Su
Ammonium in groundwater hampers sustainable water use, calling for efficient, stable in-situ remediation technologies. In this study, we design a novel coated sustained-release candle (CSRC) that contains peroxymonosulfate (PMS) and chloride ions (Cl − ). The aim is to construct an in situ long-acting SO 4 • − –Cl − oxidation system for groundwater ammonium removal. The outer coating effectively addressed the issue of “burst release” of paraffin-based sustained-release materials during the initial release stage. It also prolonged the effective release period and guaranteed the synchronous PMS and Cl − release. Systematic static release experiments revealed the critical roles of the CSRC diameter and reagent-to-paraffin mass ratio in regulating the release profiles. Column experiments demonstrated that CSRC deployment within an injection well significantly enhanced the reagent release compared to direct embedding. In addition, the groundwater flow rate exerted no influence on the CSRC release. The long-term operation confirmed the sustained generation of Cl•/ClO• and effective ammonium removal along the flow path. Moreover, three-dimensional tank experiments under varying hydraulic gradients and screen lengths showed that increases in the hydrodynamic conditions and well-screen length markedly improved the radial penetration and vertical dispersion of reagents in the aquifer and enabled the effective ammonium removal for up to 56 days. Collectively, this work presents a feasible and engineered strategy by adjusting the reagents ratio, diameter, and CSRC length that achieves the stable, long-term in-situ chemical oxidation of ammonium in groundwater. This work offers theoretical insights and practical guidance for applying sustained-release material-based remediation systems in the field.
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DOI
高影响因子
INORGANIC CHEMISTRY COMMUNICATIONS
·
2025
·
IF 5.4
Jianwei Dao,Liang Yang,Zhihao Jiang,Zihao Han,Tiqin Wei
Narrow-band red inorganic phosphors excited by near-ultraviolet (n-UV) light have significant application potential in the manufacture of white light-emitting diodes (LEDs) with high R9 index. Novel near-UV-excitable Eu 3+ doped K 3 Ca 2 (SO 4 ) 3 × (X = F, Cl, Br) halosulphate phosphors were synthesized via high-temperature solid-state reaction method. By modifying the non-activating ions in the host matrix, the luminescence properties of Eu 3+ were effectively enhanced across various matrices, thereby optimizing the performance of this series of phosphors. As-prepared phosphors can be activated under 397 nm excitation and emit red light at 619 nm, corresponding to 5 D 0 → 7 F 2 transitions of Eu 3+ . Optimization of the doping concentration revealed that the optimal Eu 3+ concentration for different host matrices is 0.13. Notably, the K 3 Ca 2 (SO 4 ) 3 F host matrix doped with Eu 3+ exhibits stronger emission intensity and better performance. The K 3 Ca 2 (SO 4 ) 3 F:0.13Eu 3+ phosphor exhibited long fluorescence lifetime of 0.42 ms and high color purity of 92.25 %. The emission intensity of K 3 Ca 2 (SO 4 ) 3 F:0.13Eu 3+ at 423 K can retain 89.5 % of its value at room temperature. A white LEDs device was fabricated by mixing and encapsulating K 3 Ca 2 (SO 4 ) 3 F:0.13Eu 3+ phosphor with commercial BaMgAl 10 O 17 :Eu 2+ blue and (Ba, Sr) 2 SiO 4 :Eu 2+ green phosphors onto 397 nm n-UV InGaN chip. The device emits bright white light and exhibits high color rendering index (Ra = 79.9, R9 = 86.5) and a suitable correlated color temperature (CCT = 5915 K) at 50 mA drive current. The results suggest that this work provides new assistance in achieving high color rendering white LEDs excited by n-UV light.
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产品关联
DOI
高影响因子
CATALYSIS TODAY
·
2025
·
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
·
催化化学
·
药物化学
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产品关联
DOI
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
·
电化学
✓ 已验证
产品关联
DOI
高影响因子
ACS Nano
·
2026
·
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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产品关联
DOI
PubMed
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2017
·
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 .
研究领域:
化学
·
材料科学
·
晶体学
✓ 已验证
产品关联
DOI
高影响因子
Inorganic Chemistry Frontiers
·
2025
·
IF 6.4
Huan Pei,Zijian Li,Shaohuan Liu,Xueling Hou,Fangfang Zhang
This study presents two new borate-sulfate compounds, Na2PbB6O10SO4 (I) and Ca2.58Pb0.42B6O11SO4 (II). Both crystals form unique three-dimensional (3D) porous frameworks 3[B6O10]∞ and 3[B7O13]∞, composed by fundamental building blocks [B6O13] and [B7O17], respectively, with [SO4] units embedded within the pores. These examples represent the first observation of 3D borate frameworks in borate-sulfates, thus expanding the structural diversity of borate-sulfate compounds. The relationship between structure and birefringence was studied using first-principles calculations. This study uncovers new insights into the connectivity and structural properties of borate-sulfates.
研究领域:
材料科学
·
晶体学
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）