DALTON TRANSACTIONS
·
2022
·Vol. 51
·期 48
·18473-18479
·
IF 4.569
Yan Zhou,Shanshan Lv,Han Li,Qikang Wu,Taiyu Chen,Shaohuan Liu,Wanying Li,Wenjuan Yang,Zheng Chen
The development and transformation of biomass-derived platform compounds is a sustainable way to deal with the fossil fuel crisis. 5-Hydroxymethylfurfural (HMF) can be reduced or oxidized to produce many high-value compounds; however, it is challenging to effectively produce 2,5-diformylfuran (DFF) due to overoxidation. In this work, a carbon-doped V2O5 (C–V2O5) material was obtained through pyrolysis of MIL-47(V) nanorods, a typical metal–organic framework material. The X-ray diffraction patterns and X-ray photoelectron spectra showed that the graphitized carbon species were incorporated in C–V2O5. High-efficiency HMF oxidation, high specific selectivity for DFF and excellent recycling could be achieved with the C–V2O5 catalyst. Fourier-transform infrared spectroscopy combined with density functional theory (DFT) calculation revealed that graphitized carbon weakens the VO bond and promotes the formation of oxygen vacancies in C–V2O5, thus improving the catalytic activity in the oxidation of furfuryl alcohols. The V4+ induced by oxygen vacancies will be oxidized by O2 to form V5+, so that the cycle can be realized. It exhibits remarkable selectivity in the oxidation of different alcohols produced from biomass based on the relatively constant active sites in C–V2O5.
研究领域:
材料科学
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催化
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化学工程
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可持续化学
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产品关联
DOI
PubMed
高影响因子
SCIENCE OF THE TOTAL ENVIRONMENT
·
2024
·
IF 8.2
Lian Xia,Andi Huang,Xiaojuan Niu,Zhen Wu,Yue Tang,Jianli Zhou,Yuangen Wu
The detrimental growth of water pollutants such as heavy metals has become a life-threatening problem in the modern era. Challenges remain in the development of rapid and accurate methods for detecting pentavalent arsenic [As(V)] in environmental water. The octahedral Mn 3 O 4 nanoparticles (NPs) did not display excellent laccase-mimicking catalytic activity, whereas the adsorbed As(V) on the surface significantly enhanced the catalytic activity. Meanwhile, the quinone imine generated from the substrates 2,4-dichlorophenol (2,4-DP) and 4-aminoantipyrine (4-AAP) catalyzed by octahedral Mn 3 O 4 NPs further quenched the carbon dots fluorescence. Thus, it is possible to establish a fast and accurate dual-mode sensor for detecting As(V). The developed dual-mode method of As(V) detection has good sensitivity and selectivity. The limit of detection for As(V) in colorimetric mode is 6.96 μg·L −1 , whereas in the fluorescent mode, it is as low as 2.56 μg·L −1 . Moreover, the detection data obtained by the dual-mode method can be validated by each other, thereby ensuring the dependability of the sensing system. The constructed dual-mode method with merits of sensitivity, speed and accuracy can offer a powerful tool for As(V) detection in environmental water. Furthermore, the application of laccase-mimicking activity in dual-mode detection provides new strategies for other environmental hazard detection.
研究领域:
环境科学
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分析化学
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纳米生物学
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产品关联
DOI
PubMed
高影响因子
RSC Advances
·
2023
·Vol. 13
·期 11
·7392-7401
·
IF 3.9
Jun Zhang,Xuxu Wei,Zifan Zhang,Caixia Yuan,Ting Huo,Fangfang Niu,Xiaoyu Lin,Chunli Liu,Hui Li,Zhenbin Chen
A magnetic chitosan/TiO2 composite material (MCT) was developed. MCT was successfully synthesized by a one-pot method using chitosan, TiO2, and Fe3O4. The absorption equilibrium time of MCT was 40 min in absorbing vanadium(V), the optimal adsorption pH was 4, and the maximum adsorption capacity of vanadium(V) was 117.1 mg g−1. The spent MCT was applied to photocatalytic reactions for reutilization. The decolorization rates for the degradation of rhodamine B (RhB) by new and spent MCT were 86.4% and 94.3%, respectively. The new and spent MCT exhibited absorption bands at 397 and 455 nm, respectively, which showed that the spent MCT was red-shifted to the cyan light region. These results indicated that the forbidden band widths of the new and spent MCT were about 3.12 and 2.72 eV, respectively. The mechanism of the degradation reaction showed that the hydroxyl radicals as oxidants in the spent MCT mediated the photocatalytic degradation of RhB. In addition, the superoxide anion radical formation of hydroxyl radicals was the main reaction, and the hole generation of hydroxyl radicals was the subordinate reaction. The N-de-ethylated intermediates and organic acids were monitored by MS and HPLC.
研究领域:
环境科学
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材料科学
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化学
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产品关联
DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2022
·
IF 16.744
Xue Ye,Jianneng Liang,Jiangtao Hu,Dazhuan Wu,Yongliang Li,Xiaoping Ouyang,Qianling Zhang,Xiangzhong Ren,Jianhong Liu
To achieve safe and high energy density solid-state batteries (SSBs), the weight of solid-state electrolyte (SSE) should be minimized and a high voltage and high specific capacity cathode should be used. Polyethylene oxide (PEO)-based polymer electrolytes (PEs) has been identified as the optimal SSE for SSBs owing to their versatile advantages. However, fabricating ultra-thin and high voltage stable PEO-based PEs is still challenging. Herein, an ultra-thin (8.1 µm) blending polymer electrolyte (BPE) is designed through blending PEO, Polymethyl methacrylate (PMMA) and Poly(vinylidene fluoride-hexafluoropropylene) (PVDF-HFP), and complexing with Succinonitrile (SN), Fluoroethylene carbonate (FEC) and LiTFSI plasticizers. Based on this design, Li|BPE|LiFePO 4 quasi-solid-state battery (QSSB) can operate for 250 cycles with a capacity retention of 92.8%, 4.5 V high voltage Li|BPE|LiCoO 2 QSSB exhibits 87% capacity retention after 80 cycles, with an average Coulombic efficiency ≥99.8%, which is much superior than 4.5 V Li|PEO|LiCoO 2 SSB, whose capacity rapidly decays to 0 mAh/g after a dezen of cycles. DFT calculation suggests that blending PEO, PMMA and PVDF-HFP increase the electrochemical oxidation tolerance. Interface study by TEM and XPS discloses PEO-LiTFSI/LiCoO 2 interface is unstable with a big amount of decomposed products from PEO-LiTFSI and from LiCoO 2 , while BPE/LiCoO 2 interface is more stable without obvious decomposition, indicating the promising application of BPE for high energy density QSSBs.
研究领域:
材料科学
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电化学
·
电池技术
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DOI
高影响因子
APPLIED CATALYSIS B-ENVIRONMENTAL
·
2019
·
IF 14.229
Yonglong Li,Wenming Liu,Ran Yan,Jian Liang,Tao Dong,Yangyang Mi,Peng Wu,Zheng Wang,Honggen Peng,Taicheng An
A series of hierarchical three-dimensionally ordered macroporous Fe 10-x V x binary metal oxides (3DOM-Fe 10-x V x ) catalysts were designed and synthesized for selective catalytic reduction of NO x from marine diesel engine exhaust. The physical-chemical performance of the 3DOM-Fe 10-x V x catalysts were subjected by various techniques and found that the 3DOM-Fe 10-x V x with the Fe to V atomic ratio of 9.0/1.0 exhibited a wider active temperature window, better soot resistance performance compared with the conventional Fe 9.0 V 1.0 catalyst due to its special 3DOM structure. Even when simultaneously exposed to the soot and high concentration of sulfur dioxide reaction feeds, the 3DOM-Fe 9.0 V 1.0 catalyst also displayed superior catalytic activity. Interestingly, we found that the soot had a reduction activity for NO x at high reaction temperature, which can effectively extend its active temperature window. The 3DOM-Fe 10-x V x catalysts prepared in this work could be potentially a good candidate for the cargo ships de NO x catalysts to satisfy the more stringent exhaust emission rules.
研究领域:
环境科学
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催化材料
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产品关联
DOI
高影响因子
Analytical Methods
·
2023
·Vol. 15
·期 36
·4758-4766
·
IF 3.1
Qiang Wang,Yulin Nie,Zhibin Wu,Yuan Yang
We developed an approach of magnetic dispersive solid-phase extraction (MSPE) based on magnetic graphene nanocomposite rGO/Fe3O4 for the determination of trace Sb(III) and Sb(V) using inductively coupled plasma mass spectrometry (ICP-MS). Scanning electron microscopy (SEM), X-ray diffraction (XRD), and Fourier transform infrared spectroscopy (FT-IR) were used to characterize the sorbent. The adsorption behavior of Sb(III) and Sb(V) on rGO/Fe3O4 was investigated. The results showed that the adsorption capacity of Sb(V) was nearly zero at pH = 9, while Sb(III) could be well adsorbed on rGO/Fe3O4. The magnetic SPE parameters including pH, adsorbent dosage, eluent type, and volume were optimized. The detection limit of Sb(III) under ideal conditions was 6 ng L−1, and the relative standard deviation was 7.6% (c = 1 g L−1, n = 7). The technique was used to identify Sb(III) at trace levels in environmental water samples, and its validity was examined by recovery experiments and the examination of an approved reference material.
研究领域:
环境科学
·
分析化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
INORGANIC CHEMISTRY
·
2025
·
IF 4.7
Shaopei Jia,Yanfeng Gao,Xiaofei Ma,Yunfei Cao,Quan Huang,Qian Zhang,Zhixin Wang,Yanjie Wang,Yuanyuan Li,Dan Li,Renkai Chang,Yunchao Mu
Designing and synthesizing highly efficient and stable electrocatalysts of seawater electrolysis for the hydrogen evolution reaction is important for realizing green hydrogen production. Herein, a heterostructured V-doped Co2P anchored on N–P-doped three-dimensional covalently cross-linked graphene (V–Co2P@NPPC/3DG) electrocatalysts was synthesized with the help of V-doped ZIF-67 as an intermediate and a controlled phosphidation process. The as-prepared V–Co2P@NPPC/3DG-1:5 had low overpotentials of 98.3 and 88.3 mV (at 10 mA cm–2) in alkaline water and artificial seawater, respectively, and the corresponding Tafel slopes were 56.4 and 51.0 mV dec–1. The electrolyzer with a flowing alkaline artificial seawater assembled from V–Co2P@NPPC/3DG-1:5 with a commercial RuO2 catalyst exhibited a cell voltage of 1.54 V at 10 mA cm–2, which is close to that of Pt/C||RuO2 (1.52 V). Notably, the cell voltage of V–Co2P@NPPC/3DG-1:5||RuO2 was lower than that of Pt/C||RuO2 at a high current density (>58 mA cm–2), which exhibited superior stability. V doping effectively enhanced the intrinsic activity of Co2P, and the complexation with NPPC/3DG achieved full exposure of the active sites while enhancing the charge transfer rate during HER. This work will attract attention to the role of metal compound-carbon support interactions in enhancing the intrinsic activity, conductivity, and stability of electrocatalysts.
研究领域:
材料科学
·
电化学
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产品关联
DOI
PubMed
高影响因子
GREEN CHEMISTRY
·
2019
·Vol. 21
·期 9
·2286-2294
·
IF 9.405
Yuqing Qin,Fei Peng,Yonggang Hu
The oxidation of As(III) to As(V) is a critical process in the treatment of contaminated water. We found that 95% As(III) (10 mg L−1) could be rapidly oxidized to As(V) by a laccase–2,2,6,6-tetramethylpiperidine-1-oxyl (TEMPO) system in 1 h. Based on this finding, we used Bacillus subtilis spores instead of laccase for As(III) oxidation with the same effect because the former had plenty of CotA–laccase on their surface. The catalytic ability of CotA protein and spores was confirmed by expressing the CotA protein and knocking out the cotA gene from wild-type spores. Both laccase– and spore–TEMPO systems displayed similar oxidation rate constants, Michaelis–Menten constants, and maximal velocities owing to the formation of the oxoammonium cation of TEMPO in the presence of dissolved oxygen. Several other laccase mediators such as 2,2′-azino-bis(3-ethylbenzothiazoline-6-sulfonic-acid) (ABTS), acetosyringone (AS), 1-hydroxybenzotriazole (HBT), 2-hydroxybutyl acrylate (HBA), violuric acid (VLA), 4-oxo-TEMPO, 4-amino-TEMPO, 4-methoxy-TEMPO, 4-hydroxy-TEMPO benzoate, and 4-hydroxy-TEMPO coupled with spores for As(III) oxidation were also investigated in detail. The spore–TEMPO system exhibited the highest oxidation efficiency and tolerated the addition of 10 mg L−1 Al3+, Ti4+, Cu2+, K+, Fe3+, Zn2+, Ni2+, Mg2+, Co2+, and Mn2+. Both laccase and spores recovered via ultrafiltration and centrifugation, respectively, could be reused for at least five cycles. The developed spore-based system has several advantages including eco-friendliness, ease of operation and storage, low cost, recyclability, sustainability, and without the need for enzyme purification. These findings may have promising implications for developing a new eco-friendly and cost-effective technology for the treatment of arsenic-containing water.
研究领域:
环境科学
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生物技术
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水处理
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微生物学
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产品关联
DOI
高影响因子
FOOD HYDROCOLLOIDS
·
2025
·
IF 12.4
Zihang Yan,Sixing Lai,Suqi Yang,Kefan Ouyang,Yuanyuan Feng,Hao Hu,Xing Hu,Hua Xiong,Qiang Zhao
Active gelatin-based films (CUR-PLLF) incorporating V-type granular starch-curcumin complex (VGS-C) and ε-polylysine (PLL) were developed for the short-term refrigerated preservation of salmon fillets. The experiment demonstrates that the composite film (CUR-PLLF), exhibits an enhanced elongation at break by 36.67%, accompanied by a marked increase in DPPH radical scavenging activity from 2.40% to 9.07%. The water vapor permeability and oxygen permeability of CUR-PLLF film were reduced by 14.02% and 18.09%, respectively, and it can be completely degraded in soil within 14 d, demonstrating significant environmental advantages. In salmon fillets refrigeration experiments, CUR-PLLF inhibited bacterial proliferation and fat oxidation, resulting in a 17.25% reduction in Total volatile base nitrogen level, which were below the spoilage threshold of 25 mg/100 g. Additionally, the content of thiobarbituric acid-reactive substances decreased by 30.77%. These findings suggest that the developed gelatin-based film exhibits comprehensive advantages in antibacterial properties, antioxidant activity, and biodegradability, offering an efficient and environmentally friendly solution for the preservation of salmon during short-term refrigeration.
研究领域:
食品科学
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生物材料
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
CRYSTAL GROWTH & DESIGN
·
2020
·
IF 4.089
Jin-Xia Yang,Xin Zhang,Ye-Yan Qin,Yuan-Gen Yao
A 2D network of {[Zn(Hbcpt)(H2O)3]·7H2O} (1) was hydrothermally synthesized and structurally characterized. By employing different N-donor ligands into the system of 3,5-bis(4′-carboxyl-phenyl)-1,2,4-triazole (H3bcpt) and Zn(II) cations, six novel entangled coordination polymers, namely, {[Zn2(bcpt)(μ2-OH)(H2O)]·(py)·4H2O} (2), {[Zn2(Hbcpt)2(bpa)2]·2H2O} (3), {[Zn(Hbcpt)(bpp)]·[Zn(Hbcpt)(bpp)]·2.5H2O} (4), {[Zn5(bcpt)2(biimpy)2(μ2-OH)4]·5H2O} (5), {[Zn2(bcpt)(bib)(μ2-OH)]·H2O} (6), and {[Zn2(bcpt)(bix)4(μ2-OH)]·3H2O} (7) (H3bcpt = 3,5-bis(4′-carboxyl-phenyl)-1,2,4-triazole, bpa = 1,2-bis(4-pyridyl)ethane, bpp = 1,3-bi(4-pyridyl)propane, biimpy = 2,6-bis(imidazole-1-yl)pyridine, bib = 1,4-bis(N-imidazolyl)butane, bix = 1,4-bis(imidazol-1-ylmethyl)-benzene, py = pyridine), were obtained. Single-crystal X-ray diffraction analysis reveals that, with the different N-donor ligands, the resulting compounds present entangled structures with different topologies. Compound 1 shows a 2D (4, 4) network, and the adjacent sheets are extended into a 3D supramolecular framework via hydrogen-bonding interactions. Interesting, by introducing a series of ditopic N-donor ligands into the reaction system, compounds 2–7 with entangled structures were harvested. Compound 2 exhibits a 3D self-penetrating network with an 8-connected bcu topology. Compound 3 features an 8-fold dia network showing an unusual [4 + 4] mode of interpenetration. Compound 4 is comprised of two parts of undulated 2D 44-sql networks, and the adjacent undulated layers are parallel interpenetrated to each other to give a 2D → 3D polycatenated framework. Compound 5 presents an unusual 3D self-penetrating network with a novel 4,6,6-connected trinodal network with the point symbol of (32·4·52·6)(32·4·56·66}{32·56·66·7}. Compound 6 shows a 2-fold interpenetrating 3D architecture with 6-connected sxd topology. Compound 7 displays an unprecedented self-penetration derived from abnormal [3 + 2] 5-fold interpenetrating dia subnets. Structural diversity of these compounds suggests that different N-donor ligands can induce the organic ligand to present different conformations and coordination modes, and the influence on the final structures. Furthermore, the luminescent properties of compounds 1–7 have been investigated in the solid state.
研究领域:
配位化学
·
材料科学
·
晶体学
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产品关联
DOI
高影响因子
LANGMUIR
·
2025
·
IF 3.9
Lina Jin,Baozhong Li,Xinye Qian,Hexiang Xu
Lithium–sulfur batteries (LSBs) are recognized as promising candidates for next-generation high-energy-density energy storage technologies due to their exceptionally high theoretical energy density (2600 Wh kg–1), low cost, and environmental sustainability. However, several challenges, including the polysulfide(LiPS) shuttle effect, the low conductivity of the sulfur cathode, and lithium dendrite growth, have significantly impeded their practical application. In this research, we developed a hierarchical porous Zn3V2O8 (ZVO) modified separator through the high-temperature calcination of a Zn–V-MOF precursor to effectively mitigate LiPS shuttle effects via a dual mechanism. The porous architecture of ZVO facilitates efficient adsorption and rapid conversion of polysulfides through both physical confinement and catalytic activity arising from vanadium’s multivalent states. Additionally, the nitrogen-doped carbon network enhances electrode conductivity while strengthening polysulfide anchoring. The performance of the ZVO-modified separator reveals an initial discharge capacity of 882.9 mAh g–1 at 0.5C with a sulfur loading of 2.8 mg cm–2, demonstrating retention at 541.2 mAh g–1 after 500 cycles-yielding a capacity retention rate of 61.3%. Notably, under commercially viable conditions (5 mg cm–2 sulfur loading and 0.1C), the battery exhibits stable cycling performance, underscoring the potential applicability of ZVO-based separators in practical high-energy-density LSB systems.
研究领域:
储能技术
·
材料科学
·
电化学
·
纳米技术
·
电池技术
✓ 已验证
DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2022
·
IF 16.744
Huan Su,Chao Shan,Xiaolin Zhang,Bingcai Pan
Chemical oxidation is essential in treating P(I)/P(III)-bearing wastewater, while conventional oxidation processes suffer from low selectivity and high cost induced by oxidant reagents. Herein, a low-cost catalyst PdNi 10 was developed to rival the noble metal Pd, which had been known as the only catalyst enabling chemical-free oxidation of P(I)/P(III) into P(V) by ambient O 2 . The PdNi 10 fabricated via optimized method even outperformed Pd in catalytic activity at identical dosage (0.10 g L −1 ), achieving efficient conversion of 1.00 mM of P(I) into P(V) (>94% in 30 min) with wide applicable pH range from 3.0 to 9.0. The aerobic oxidation of P(I) and P(III) over PdNi 10 was confirmed via scavenging experiments to be both dominated by non-radical pathways with apparent activation energies of 44.5 and 21.3 kJ mol −1 , respectively. Interestingly, the individual roles of Ni components of PdNi 10 in the catalytic oxidation were found negligible. The H 2 O-methanol binary solvent experiment suggested that H 2 O mediated the catalytic reaction and the interfacial OH groups as a result of H 2 O dissociation served as the main reactive oxidant species for P(I)/P(III) oxidation. Furthermore, synergistic mechanism was proposed for the Ni and Pd sites with favorable roles in the essential reaction steps of dehydrogenation and hydroxylation, respectively. This study is believed to advance the treatment strategy of P(I)/P(III)-rich wastewater and to shed new light on the development of low-cost catalysts enabling chemical-free aerobic oxidation processes under facile condition.
研究领域:
环境科学
·
催化
·
化学工程
·
材料科学
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）