NEW JOURNAL OF CHEMISTRY
·
2024
·
IF 2.7
Yichuan Kong,Yongzhi Duan,Yuezhi Zhang,Yulin Min,Hongxiu Lu,Penghui Shi
The lithium-ion battery industry is experiencing explosive growth. Efficiently and greenly recycling Li, Co and other valuable metals is extremely important to alleviate the scarcity of resources and protect the environment. In this study, an improved recycling strategy is proposed to convert spent LiCoO2 batteries into water-soluble sulfate below 350 °C using the auxiliary effect of urea on sulfation roasting. This strategy not only allows for the direct synthesis of precursors for regeneration after selective recovery of lithium and cobalt but also further reduces the roasting temperature requirement compared to the conventional salt-thermal method. After roasting, Li and Co can be recovered from the solution by simple aqueous leaching. Under optimal conditions, the leaching rates of Li and Co were 94.94% and 95.47%, respectively. Subsequently, the Li and Co compounds that could be used as battery precursors were obtained by the addition of CO32−. Characterized by high efficiency, low energy consumption, absence of secondary pollution, and utilization of inexpensive and readily accessible raw materials, this approach offers a novel concept in the domain of lithium-ion battery recycling via salt-thermal methods.
研究领域:
材料科学
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
SCIENCE OF THE TOTAL ENVIRONMENT
·
2022
·
IF 10.753
Xuanhe Jia,Yueqiang Pan,Xuexia Zhu
Driven by anthropogenic activities, freshwater salinization has become an emerging global environmental issue . Recent studies indicate that salinization increases the mobility of heavy metals in soil and causes higher flux into surface waterbodies. The present study assessed the combined effects of salinization (0, 3, 6 PSU) and the heavy metal Cd 2+ (0, 0.2, 0.4 mg L −1 ) on the anti-grazing colony formation and population growth of Scenedesmus obliquus , a common freshwater alga. The results showed that the increase in salinity promoted colony formation of S. obliquus with or without the presence of grazing cues and, in contrast, Cd 2+ contamination depressed the defensive colony formation of S. obliquus to Daphnia filtrate. The increase in both salinity and Cd 2+ concentration depressed the population growth of S. obliquus , including impaired photosynthesis and a decreased population growth rate. Salinization moderated the negative effects of Cd 2+ on defensive colony formation of S. obliquus , suggesting increased absorption of Cd 2+ ions by a thicker outer layer of the algal cell wall under saltier conditions. As a result, larger defensive colonies of S. obliquus under freshwater salinization may cause higher bioaccumulation of heavy metals by algal cells and heavier influence on zooplankton. This study provides evidence that freshwater salinization could interfere with plankton interactions by affecting algal defense and growth, which may lead to bottom-up cascading effects on freshwater food webs.
研究领域:
生态学
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环境科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CELLULOSE
·
2022
·Vol. 29
·期 6
·3569-3581
·
IF 6.123
Wang Pei,Zhang MengYi,Qu JieHao,Wang LuJie,Geng JunZhao,Fu FeiYa,Liu XiangDong
Quaternary ammonium compounds (QACs) have outstanding antimicrobial effect, but covalent immobilization of plentiful QAC onto cotton fiber surface to realize a durable function remains a challenge. Herein, a quaternary ammonium monomer, [2-(methacryloyloxy) ethyl] trimethylammonium chloride (DMC) was co-polymerized with methyl acrylate (MA) to prepare an antibacterial copolymer, poly(DMC-co-MA). To graft the copolymer with an improved grafting efficiency, cotton fabric was treated using carboxymethyl chitosan (CMC) to establish an amino-functionalized fiber surface first. This treatment allows the amidation reactions between the amino groups and the pendant ester groups in the poly(DMC-co-MA) to take place, achieving a durable anionic polymer coating onto the fiber surfaces with remarkably antibacterial effect. Characterization results indicated that when DMC/MA monomer ratio was 100:1, the resulting copolymer endows the modified cotton fabric with antibacterial capability that inactivates all Escherichia coli ( E. coli ) and Staphylococcus aureus ( S. aureus ). Even after 50 laundering cycles, more than 98.0% of the antibacterial rate could still be retained. Moreover, the wearing comfort properties such as softness, water absorption and air permeability of the finishing cotton fabrics have been insignificantly changed by comparing to the untreated cotton fabric.
研究领域:
材料科学
·
纺织工程
·
微生物学
✓ 已验证
产品关联
DOI
高影响因子
Materials
·
2025
·Vol. 18
·期 5
·1144
·
IF 3.2
Yi Zhang,Longxiang Sun,Xinyu Li,Ziye Fu,Yang Li,Weisheng Sun,Yawei Sun,Rongfeng Huang,Minghui Guo
Developing eco-friendly, high-performance adhesives is crucial for sustainable industrial applications but remains a significant challenge. Herein, a synergistic strategy combining core–shell hybridization and borate chemistry was employed to fabricate a multifunctional soy protein (SPI) adhesive with excellent adhesion. Specifically, a reactive core–shell hybrid (POSS-U) was synthesized via free-radical polymerization using octavinyl-POSS as the core and urushiol (U) as the shell. Sodium borate (SB) was then added as a crosslinker, along with POSS-U and SPI, to prepare the SPI/POSS-U/SB adhesive. The SPI/POSS-U/SB adhesive exhibited a 100% increase in dry shear strength (2.46 MPa) and a wet shear strength of 0.74 MPa, meeting indoor application standards. Due to the thermal shielding and char formation of POSS and SB, the peak heat release rate of the modified adhesive reduced by 25.4%, revealing excellent flame retardancy. Additionally, the modified adhesive remained mold-free for 144 h due to the antifungal properties of urushiol and boron. This work provides an innovative approach for enhancing protein-based adhesives and contributes to the advancement of multifunctional composite materials.
研究领域:
材料科学
·
绿色化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CRYSTAL GROWTH & DESIGN
·
2020
·
IF 4.089
Chang-Yu Meng,Feng Feng Huang,Qin Yao Li,Lei Geng
Introduction of divalent metal oxides into the TeO2 matrix can produce the chemical formula Mn[TemO2m+n] ≡ (MO)n(TeO2)m, compounds in which divalent metal oxides provide oxygen ions to the parent compound TeO2, to cleave neutral Te–O net to form various tellurium(IV) oxide anion [TemO2m+n]2n− and divalent metal cations as balanced charges. [TemO2m+n]2n− can form isolated anion, discrete polyanion, one-dimensional chain and ribbon polyanion, two-dimensional (2D) layered polyanion, and 3D tunnel polyanion depending on the ratio of MO/TeO2. In this work, a new type of inorganic compound AE2[Ni(Te4O10)Cl2] ≡ [(AEO)2(TeO2)4](NiCl2) (AE = Ca, Sr, Ba, Pb) can be obtained by introducing NiCl2 into the compound AE2[Te4O10] ≡ (AEO)2(TeO2)4 (AE = Ca, Sr, Ba, Pb). In AE2[Ni(Te4O10)Cl2] ≡ [(AEO)2(TeO2)4](NiCl2), AEO acts as a structural shearing agent to cleave the neutral Te–O layered structures of parent TeO2 into [Te4O10]4– anionic fragments, and the introduced NiCl2 acts as an “adhesive” to recombine [TemO2m+n]2n− anionic fragments to form new [Ni(Te4O10)Cl2] anionic framework and does not provide additional oxygen ions to cleave the parent compound TeO2. AE2[Ni(Te4O10)Cl2] compounds feature 2D 2∞[Ni(Te4O10)Cl2] anionic layers composed by TeO4E, TeO3+1E (where E is the lone pair of electrons of TeIV) distorted trigonal bipyramid, and NiO4Cl2 octahedra, and the spaces between 2∞[Ni(Te4O10)Cl2] layers are filled with AE2+ cations (acting as charge balance) as well as E (protruding from sides of the layers). The optical band gaps of AE2[Ni(Te4O10)Cl2] (AE = Ca, Sr, Ba, Pb) were evaluated to be ∼3.69 eV through extrapolating the UV–vis–near-infrared optical absorption spectra. Thermogravimetric and differential scanning calorimetry measurements indicate that Ca-, Sr-, Ba-, and Pb-compounds are stable below 787, 716, 648, and 517 °C, respectively, under flowing N2 atmosphere. The effective moments estimated by Curie–Weiss equation show that the Ni2+ cations of AE2[Ni(Te4O10)Cl2] (AE = Ca, Sr, Ba, Pb) are all in high-spin ground states.
研究领域:
无机化学
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2022
·
IF 16.744
Mingyan Zhao,Jingfeng Gao,Ying Liu,Zhiqi Wang,Zejie Wu,Haoran Zhang,Yi Zhang
The wastewater containing high quaternary ammonium compounds (QACs) concentrations from hospitals and other sources may cause the transient shock loads on the wastewater treatment plants (WWTPs). Denitrification is the key part of nitrogen removal from wastewater, however, the effects of QACs on the denitrification and the spread patterns of intracellular and extracellular resistance genes were still unknown. The short-term stress of three frequently detected QACs on denitrification were systematically investigated in this study. The inhibitory effect on nitrate removal had the following rules: BAC C12 > ATMAC C12 > DADMAC C12. The inhibition of QACs on denitrification performance was correlated with the reduction of Thauera abundance, and a higher QACs concentration made stronger inhibitory effect. Moreover, high concentrations of QACs could cause a significant decrease in reactive oxygen species, inhibit cell activity and extracellular polymeric substances secretion. Furthermore, QACs stimulated an overall increase of intracellular and extracellular QACs resistance genes in denitrification systems, both in sludge and in water. And co-selection among resistance genes occurred under shock loads of QACs, especially a high BAC C12 concentration caused a substantial raise in abundances of resistance genes in water. It was worth noting that resistance genes in sludge and water were mainly contributed by different bacteria. Rhizobium and Pseudomonas may be the potential hosts contributed to resistance genes in sludge while Thauera mainly contributed to that in water.
研究领域:
环境科学
·
微生物学
✓ 已验证
产品关联
DOI
高影响因子
Frontiers of Environmental Science & Engineering
·
2025
·Vol. 19
·期 8
·1-18
·
IF 6.4
Yang Kun,Lu Huijie,Zhu Lizhong
The extensive application of quaternary ammonium compounds (QACs) has led to a significant increase in their mass load in wastewater treatment plants (WWTPs). However, little is known about how QACs contribute to the emergence of resistance against different antibiotics. This study aims to reveal the structure- and dose-response relationships between various QACs and their induced antibiotic resistance and sensitivity patterns. 16 QACs were tested for their capacity in inducing multidrug resistance in activated sludge (AS) and AS-isolated E. coli . For AS, the exposure to three representative QACs resulted in up to a 32-fold increase in resistance against norfloxacin, tetracycline, kanamycin and gentamicin. However, the resistance to cefepime (CEF), azithromycin, and rifampicin remained largely unchanged. As a representative strain isolated from AS, the exposure of E. coli to QACs at 1 mg/L exhibited no induced resistance, whereas the MIC for CEF showed a decrease by 62.5%–87.5%. This was likely attributed to downregulation of proton motive force and efflux pump, which promoted the intracellular accumulation of CEF. Additionally, we identified the high-risk structural characteristics of QACs and emphasized the critical importance of determining the threshold concentrations for QACs risk management. This study provides valuable guidance for the assessment and management of environmental resistance risks caused by increased QACs in diverse environments.
研究领域:
环境科学
·
微生物学
·
毒理学
✓ 已验证
DOI
高影响因子
PHYSICA SCRIPTA
·
2024
·Vol. 99
·期 7
·075913
·
IF 2.6
Xingke Zheng,Aochen Du,Yun Ye,Enguo Chen,Sheng Xu,Tailiang Guo
Oxide of tungstate has consistently been pursued for use in optoelectronic applications. This study details the synthesis of AWO4 (A = Ba, Sr and Ca) using a high-temperature solid-state method. Additionally, theoretical calculations highlight its electronic structure, density of states, photoelectric properties, and vibrational modes. The x-ray diffraction of AWO4 (A = Ba, Sr and Ca) was meticulously introduced by the utilization of Rietveld for refinement. The refined lattice parameters substantially verified AWO4 (A = Ba, Sr and Ca) as a tetragonal system of scheelite with the spatial group of I41/a, and demonstrated significant alteration with the discrepancy in the radius of alkaline earth metal (A-site) ions. The electronic configuration and optical attributes of AWO4 (A = Ba, Sr and Ca) possessing scheelite-like structure were explored using density functional theory (DFT) based computational techniques. The theoretical blueprint was derived by optimizing the structure based on defects. The postulated optical bandgap energy confirms the occurrence of direct electronic transitions at Brillouin region G points. Calculations suggested the direct band gaps of BaWO4, SrWO4, and CaWO4 at 4.385, 3.123 and 3.813 eV. This was attributed to the energy levels produced by O and A-site atoms in the valence band, and W and O atoms in the conduction band. An examination of the polarization effect and uneven electronic charge distribution between [CaO8]6− and [WO4]2− clusters brought about by structural defects in AWO4 (A = Ba, Sr and Ca) was performed. Moreover, advanced investigations have been conducted on the elastic constants and mechanical durability of AWO4 (A = Ba, Sr and Ca). This research extensively calculated the elastic moduli of various matrices utilizing DFT. The critical Pugh's ratio value was found to be >1.75, it indicated that AWO4 (A = Ba, Sr and Ca) has significant potential as a resilient material.
研究领域:
材料科学
·
计算化学
✓ 已验证
产品关联
DOI
高影响因子
Journal of Physical Chemistry C
·
2017
·
IF 4.536
Xuerui Cheng,Yufen Ren,Jimin Shang,Yang Song
As promising optical materials, the structures of scheelite- and zircon-type ZrGeO4 have been investigated by Raman spectroscopy at pressures up to 51.6 GPa using diamond anvil cells. For scheelite-type ZrGeO4, two reversible phase transitions at 16.2 and 41.2 GPa were identified from the Raman spectral profiles and pressure dependence of the Raman shift upon compression. The first transition can be interpreted as the change of the tetragonal scheelite structure to the monoclinic fergusonite structure. By comparison with a previously reported isomorphic crystal, we infer that the second high pressure phase likely has a monoclinic structure. The zircon-type ZrGeO4 initially transforms to a scheelite structure at ∼10.1 GPa, while such phase transformation is completed at around 24.6 GPa, and remains stable up to 37.6 GPa. Moreover, the zircon-to-scheelite phase transition is irreversible, and the high pressure scheelite structure cannot be recovered upon decompression. These phase transitions for different starting ZrGeO4 materials were unambiguously identified for the first time, and their contrasting structural stabilities as well as the transition mechanisms can be understood from the intrinsic characteristics of the crystal lattices. These results contribute to the understanding of the pressure behavior of very sparsely reported germinate compounds in the ABO4 family.
研究领域:
材料科学
·
光学
✓ 已验证
产品关联
DOI
高影响因子
Journal of Energy Storage
·
2021
·
IF 6.583
Xin-ru Wang,Jing Zhong,Kai-da Zhu,Sen-lin Wang
To suppress the sulfation of the negative electrode of lead-acid batteries, a graphene derivative (GO-EDA) was prepared by ethylenediamine (EDA) functionalized graphene oxide (GO), which was used as an effective additive for the negative electrode of lead-acid batteries. The effect of GO-EDA on the performance of lead-acid batteries was studied by electrochemical methods, simulated cell performance test, X-ray diffraction (XRD) and scanning electron microscopy (SEM). The results show that when the negative active material (NAM) contains 0.5 wt.% GO-EDA additive (the N-0.5 cell), the initial discharge capacity of the cell at a rate of 0.05 C is 171.47 mAh g −1 . Meanwhile, the high-rate partial state of charge (HRPSoC) cycle life of the N-0.5 cell under 1 C rate is 17,970 cycles, which is 280% higher than that of the blank control cell. In a word, GO-EDA has the potential to be applied to enhance the specific capacity and HRPSoC cycle-life of lead-acid 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
ENVIRONMENTAL RESEARCH
·
2022
·
IF 8.431
Yong Cheng,Han-Qing Zhao,Aqiang Ding,Fei Chen,Jun Liu,Dazhi Fang,Chenglong Li,Yongkui Huang,Peili Lu
The widespread application of quaternary ammonium compounds (QAC) has posed a serious hazard to the environment and human being, and high concentration of Cl − in QAC wastewater may further increase the difficulty of pollutants elimination . In this study, such a QAC wastewater under high salinity conditions was chosen as the target, the prepared Ti/(Ru x Ir y )O 2 anode exhibited favorable catalytic performance for the oxidation and mineralization of QAC under high salinity conditions. Increasing the Ru/Ir ratio of Ti-based electrode coating also slightly promoted the inner catalytic capacity. The combination of electron paramagnetic resonance (EPR) and quenching experiments indicates that 1 O 2 served as a main reactive specie in the Ti/(Ru x Ir y )O 2 electrooxidation system. The increase of pH could decrease the removal efficiency of QAC for the reduced 1 O 2 yield, and the rise of Cl − concentration could favor the QAC oxidation, and Cl − was a better electrolyte to promote the oxidation of organic contaminants when compared to Na 2 SO 4 or Na 2 CO 3 . Additionally, the conversion pathway of the model pollutant was tentatively investigated, the results demonstrated that there were almost no halogenated final products residual by electrocatalytic oxidation with Ti/(Ru x Ir y )O 2 anode. This study not only elucidate the reaction mechanism of Ti/(Ru x Ir y )O 2 anode electrocatalytic oxidation of high salinity QAC wastewater, but also may provide an efficacious and eco-friendly method for the treatment of high salinity QAC wastewater.
研究领域:
环境科学
·
污水处理
✓ 已验证
产品关联
DOI
PubMed
高影响因子
SCIENCE OF THE TOTAL ENVIRONMENT
·
2016
·
IF 3.976
Lei Xiang,Teng-Fei Sun,Mei-Jie Zheng,Yan-Wen Li,Hui Li,Ming-Hung Wong,Quan-Ying Cai,Ce-Hui Mo
Quaternary ammonium compounds (QACs) used as cationic surfactants are intensively released into environment to be pollutants receiving more and more concerns. Sorption of dodecyltrimethylammonium chloride (DTAC), one of commonly used alkyl QACs, to five types of agricultural soils at low concentrations (1–50 mg/L) was investigated using batch experiments. DTAC sorption followed pseudo-second-order kinetics and reached reaction equilibrium within 120 min. Both Freundlich model and Langmuir model fitted well with DTAC isotherm data with the latter better. DTAC sorption was spontaneous and favorable, presenting a physical sorption dominated by ion exchanges. Sorption distribution coefficient and sorption affinity demonstrated that soil clay contents acted as a predominant phase of DTAC sorption. DTAC could display a higher mobility and potential accumulation in crops in the soils with lower clay contents and lower pH values. Sorption of DTAC was heavily affected by ions in solution with anion promotion and cation inhibition.
研究领域:
环境科学
·
土壤学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）