JOURNAL OF MOLECULAR LIQUIDS
·
2024
·
IF 5.3
Manman Liu,Luyao Wang,Chen Cheng,Zhaohui Qiu,Sheng Liu,Liu Yang,Guangyi Liu
To achieve an eco-friendly flotation separation of galena from pyrite under the low alkaline and depressant-free conditions, the triazine-dithione surfactants, such as 2-dimethylamino- s -triazine-4-thiol-6(1H)-thione sodium (DMN), 2-diethylamino- s -triazine-4-thiol-6(1H)-thione sodium (DEN) and 2-dibutylamino- s -triazine-4-thiol-6(1H)-thione sodium (DBN) were designed as the special collectors for galena. The micro-flotation results showed that the collecting capacity of these three collectors towards galena was in the order of DBN > DEN ≫ DMN, being consistent with their hydrophobization ability. In-situ AFM observed the aggregation of DBN on the whole surface of galena, which significantly enhanced the contact angle of galena. UV spectra and zeta potential recommended that the affinity of DBN towards lead ions and galena was much stronger than ferrous/ferric ions and pyrite. DFT (density functional theory) calculation revealed DBN’s two exo -S atoms were of its electron-donating center. And XPS confirmed the bonding interaction of the two exo -S atoms with Pb(Ⅱ) atoms on/in galena surface. DBN owned the mild electron-donating capacity and strong electron-accepting ability, and realized the eco-friendly flotation separation of galena from pyrite at pH ∼8.0.
✓ 已验证
产品关联
DOI
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2024
·
IF 7.7
Aowei Lv,Xue Lv
Anthropogenic wastewater generation and water pollution can have negative impacts on public health and ecosystems. However, most materials do not have both adsorptive and catalytic properties, so the design and development of sustainable and multifunctional materials is essential for wastewater treatment. Herein, composite hydrogel (PHG) containing [2-(Methacryloyloxy)ethyl]dimethyl-(3-sulfopropyl) ammonium hydroxide (SBMA) and chitosan quaternary ammonium salts (HACC) were prepared for wastewater treatment. The adsorption capacities of the PHG hydrogels for nickel (Ni II ), copper (Cu II ), and palladium (Pd II ) ions were 158.68, 182.99, and 229.78 mg/g, respectively. The adsorption process is consistent with the Langmuir adsorption model and quasi-secondary kinetics. For further application of adsorbed metal ions, NaBH 4 was selected for in situ reduction to prepare hydrogel-based catalysts cemented with metal nanoparticles (Ni-, Cu- and Pd-NPs), respectively. The PHG-Pd catalysts demonstrated significant catalytic efficiency in reducing 4-nitrophenol and methylene blue, and K app were 0.307 and 0.365 min −1 , respectively. Among them, the activation parameters for the reduction of 4-NP over PHG-Pd catalyst were calculated as E a = 36.27 kJ/mol, ΔH # = 33.72 kJ/mol and ΔS # = −259.68 J/(mol·K). This study is expected to provide insights into the design of multifunctional adsorption catalysts for the removal of dyes and nitro compounds from wastewater.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2024
·
IF 8.1
Aowei Lv,Xue Lv,Xiaoyan Xu,Yanwen Chen,Jiajia Zhang,Zhu-Bao Shao
Herein, quaternary ammonium ionic liquids (DM) with different chain lengths was successfully synthesised for the removal of sodium montmorillonite (MMT) and a composite hydrogel (DMCHA) was prepared. The hydrogel was used for the synergistic removal of organic pollutants such as cationic dyes (methylene blue: MB, rhodamine B: RhB), anionic dyes (methyl orange: MO, indigo red: IC) and nitrobenzene compounds (4-nitrophenol: 4-NP) from wastewater. Notably, the maximum adsorption amounts of MB, MO, IC and RhB were 349.68, 325.42, 306.08 and 332.85 mg/g, respectively, at 298.15 K. The reduction of 4-NP by composite hydrogels loaded with Ni-NPs showed excellent catalytic performance (K app = 0.17). The adsorption process of DM 16 CHA on dyes conforms to the Langmuir model, obeys the proposed first-order model of intraparticle diffusion, and is spontaneous and heat-absorbing. Selectivity experiments with mixed dyes solutions indicate promising applications for DM 16 CHA. The adsorption mechanism of DM 16 CHA on the four dyes was mainly based on electrostatic and hydrogen bonding interaction. The cyclic adsorption experiments showed that DM 16 CHA has excellent recyclability. Furthermore, DM 16 CHA has excellent antimicrobial and mechanical properties that endow the gel-based adsorbent with contamination resistance and durability. The DM 16 CHA provides an economical, efficient, green and promising strategy for industrial wastewater treatment and environmental protection.
✓ 已验证
产品关联
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2024
·
IF 8.1
Zicheng Du,Baojie Liu,Xiaoying Liu,Lu Liu,Chen Liang,Shuangquan Yao,Chengrong Qin
Separating low condensed lignin from lignocellulosic biomass is of great importance for achieving its full component conversion. This study proposed a new efficient and environmentally friendly alcohol/acid pretreatment system using 1,4-butanediol (1,4-BDO) as a solvent, combined with p -toluene sulfonic acid ( p -TsOH) to efficiently separate low condensed lignin. The results showed that the system could remove 85.55 % of hemicellulose and 84.78 % of lignin in a short time, with a high retention rate of cellulose. Based on the phenomenon of 1,4-BDO molecule protecting lignin structure, the recovered low-condensed lignin structure contains the main aliphatic hydroxyl structure, and the remaining solid surface lignin condensation grains were fewer, and the fiber crystallinity was high, which was beneficial for the preparation of high-value products. In addition, the lignin dissolution kinetics revealed that the p -TsOH/1,4-BDO pretreatment had a lower reaction activation energy, clarifying the solvation effect of 1,4-BDO on efficient lignin dissolution. Finally, combining density functional theory (DFT) from the molecular level clarified that the hydrogen bonding and conjugated effect between 1,4-BDO and lignin structure could effectively reduce the self-condensation reaction of lignin molecules. This study achieved effective separation of lignocellulosic biomass, providing a theoretical basis for the application of 1,4-BDO in biomass component separation, and promoting the development of green and efficient component separation technologies.
✓ 已验证
产品关联
DOI
高影响因子
Carbon Letters
·
2025
·
IF 5.8
Hu Chaoshuai,Liu Yuanxin,Zhang Jian,Zhu Yaming,Yin Xitao,Zhao Xuefei
Using durian shell as a carbon source and triethanolamine as a nitrogen dopant, nitrogen-doped carbon dots (N-CDs) were prepared via the hydrothermal method. First, by exploring different reaction times, reaction temperatures, and carbon source/dopant ratios to synthesize nitrogen-doped carbon dots, it is concluded that the best process conditions are 200 ℃, reaction time being 15h, and the dopant addition amount being 2mL. Structure and characteristics of the synthesized CDs were analyzed using X-ray photoelectron spectroscopy, Fourier-transform infrared, fluorescence (FL), ultraviolet–visible absorption, and Raman spectra. The N-CDs showed blue FL with a quantum efficiency of 4.28%. The FL characteristics of the N-CDs were utilized for ion detection, which demonstrated that \({\text{MnO}}_{4}^{ - }\) and \({\text{Cr}}_{{2}} {\text{O}}_{7}^{2 - }\) ions caused distinct FL quenching through static quenching, while other ions had no significant quenching effect. The detection limits for \({\text{MnO}}_{4}^{ - }\) and \({\text{Cr}}_{{2}} {\text{O}}_{7}^{2 - }\) were 37.5 and 46.2 nM, respectively. The N-CDs were subsequently employed to detect these ions in actual water samples, producing satisfactory results. Therefore, the preparation of N-CDs using durian shell as raw material and its application in practical detection work have good application feedback, which not only provides a new way for the reuse of fruit and vegetable wastes but also provides a new detection means for environmental monitoring pollutants.
✓ 已验证
产品关联
DOI
高影响因子
MICROCHIMICA ACTA
·
2024
·Vol. 191
·期 8
·1-13
·
IF 5.3
Chen Tao,Ge Yu,Lu Xinyu,Hu Jiaqi,Karimi-Maleh Hassan,Wen Yangping,Wang Xiaoqiang,Huang Zhong,Li Mingfang
The stability of black phosphorene (BP) and its preparation and modification for developing and applying devices have become a hot topic in the interdisciplinary field. We propose ultrasound-electrochemistry co-assisted liquid-phase exfoliation as an eco-friendly one-step method to prepare gold–silver bimetallic nanoparticles (Au−AgNPs)-decorated BP nanozyme for smartphone-based portable sensing of 4-nitrophenol (4-NP) in different water sources. The structure, morphology, composition, and properties of Au−AgNPs−BP nanozyme are characterized by multiple instrumental analyses. Bimetallic salts are induced to efficiently occupy oxidative sites of BP to form highly stable Au−AgNPs−BP nanozyme and guarantee the integrity of the lamellar BP. The electrochemistry shortens the exfoliation time of the BP nanosheet and contributes to the loading efficiency of bimetallic nanoparticles on the BP nanosheet. Au−AgNPs−BP-modified screen-printed carbon electrode coupled with palm-sized smartphone-controlled wireless electrochemical analyzer as a portable wireless intelligent sensing platform was applied to the determination of 4-NP in a linear range of 0.6−10 μM with a limit of detection of 63 nM. It enables on-site determination of 4-NP content in lake water, river water, and irrigation ditch water. This work will provide a reference for an eco-friendly one-step preparation of bimetallic nanoparticle-decorated graphene-like materials as nanozymes and their smartphone-based portable sensing application outdoors. Graphical abstract
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2025
·
IF 6.3
Wei Cai,Zhiqiang Liu,Dakai Chen,Gang Chen,Jiali Tang,Rongli Gao,Zhenhua Wang,Xiaoling Deng,Chunlin Fu
NaNbO 3 ceramics, recognized as lead-free dielectric energy storage material, suffer from limited energy storage efficiency due to their substantial remnant polarization, which hinders their practical application. The design and engineering of relaxor ferroelectrics represent a promising strategy for substantially improving their comprehensive energy storage performance. In this study, (1- x )NaNbO 3 - x Bi(Mg 3/4 W 1/4 )O 3 (NN-BMW) relaxor ferroelectric ceramics were fabricated through a conventional solid-state sintering process. A systematic investigation was carried out to evaluate the microstructural characteristics, dielectric behavior, and energy storage performance of the NN-BMW ceramics. Among the ceramic samples, the 0.9NaNbO 3 -0.1Bi(Mg 3/4 W 1/4 )O 3 (0.9NN-0.1BMW) ceramic demonstrated the highest recoverable energy density of 2.03 J/cm 3 and the lower energy storage efficiency under an electric field of 290 kV/cm. To further enhance the energy storage performance of the 0.9NN-0.1BMW ceramic, a cold sintering technique combined with post-annealing was employed. By optimizing the post-annealing temperature, the 0.9NN-0.1BMW ceramic treated at 1000 °C exhibited significantly enhanced recoverable energy density of 2.59 J/cm 3 and energy storage efficiency of 76.5 %, surpassing the sample prepared by conventional sintering at 1150 °C. This work illustrates a low-energy, eco-friendly method of synthesizing NN-based relaxor ferroelectric ceramics with superior comprehensive energy storage performances.
✓ 已验证
产品关联
DOI
高影响因子
Food Bioscience
·
2025
·
IF 5.9
Lijun Ling,Fanjin Kong,Yijuan Jiang,Wenyue Zhang,Rongxiu Mo,Rui Yue,Yao Li,Lijun Feng,Yongpeng Zhou
Citrus reticulata 'Shiyue Ju' are prone to fungal infections because of their high maturity, water content, and remote cultivation locations. Chemical control, though effective, leaves fruit residues that endanger health and the environment. Endophytic VOCs potently inhibit pathogens with high efficacy, low cost, and minimal ecological impact, positioning them as promising natural post-harvest preservatives. In this study, we isolated the pathogenic fungus ( Penicillium italicum Q-1) from rotting Citrus reticulata 'Shiyue Ju' and used Q-1 as the test strain to screen for endophytic fungi Y-4 isolated from healthy Citrus reticulata 'Shiyue Ju' that can produce VOCs with strong antagonistic activity. We analyzed the VOC components and screened for the highly bactericidal activity compound 3-pentene-2-one,exhibiting complete (100 %) growth inhibition at 4 μL/L. We also investigated the inhibitory activity and mechanisms of action of the VOCs and antifungal compounds. The results indicated that the VOCs produced by Y-4 and 3-pentene-2-one could inhibit the growth and reproduction of the pathogenic fungus, primarily by disrupting the normal morphological structure of hyphae and spores and damaging the integrity of the cell membrane. Furthermore, 3-pentene-2-one at appropriate concentrations can inhibit the spread of pathogenic fungi on Citrus reticulata 'Shiyue Ju' and effectively delay the decline in fruit quality. These findings indicate that 3-pentene-2-one is a powerful tool for controlling P. italicum and provides a theoretical basis for post-harvest disease management of Citrus reticulata 'Shiyue Ju' .
✓ 已验证
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2024
·
IF 8.3
Xiao Jiang,Yutao Jian,Yuan Zhang,Juan Zhong,Qiulan Li,Xiaodong Wang,Xiaoshi Jia,Xiangnan Wu,Ke Zhao,Yitong Yao
The successful filling of bone defects remains challenging due to the incongruity between bone graft materials and the dynamic process of bone healing. Developing multifunctional materials matching the dynamic process of bone healing offers a viable solution to the current dilemma. Lines of evidence have shown that engineering osteoimmunomodulatory biomaterials can modulate the function of immune cells and thus promote bone regeneration. Herein, we utilized silk fibroin (SF) and polyglycolic acid (PGA) to create a PGA-SF core–shell fibrous scaffold, incorporating interleukin-4 (IL-4) and tricalcium phosphate (TCP) as a codelivery system (PGA/TCP-SF/IL-4), aiming to achieve an initial rapid release of IL-4 and sustained release of TCP. The PGA/TCP-SF/IL-4 scaffold mimicked the native bone structure and showed superior tenacity in the wetting regime. In vitro studies demonstrated that the PGA/TCP-SF/IL-4 scaffold significantly reduced the inflammatory response by upregulating the M2 macrophages, created a favorable microenvironment for osteogenesis, and facilitated osteogenic differentiation and mineralization. Implantation of the PGA/TCP-SF/IL-4 scaffold into the rat skull defect model notably increased the formation of new bones. IL-4 and TCP acted synergistically in attenuating inflammation and enhancing osteogenic differentiation. Overall, this multifunctional scaffold comprehensively considers the various demands in the bone defect region, which might have a significant potential for application in bone reconstruction.
✓ 已验证
DOI
PubMed
高影响因子
APPLIED CATALYSIS A-GENERAL
·
2020
·
IF 5.006
Feng Lin,Yulong Ma,Yonggang Sun,Xiuqin Men,Yingbo Zhu,Tingting Gao,Kanghe Zhao
Strategies for catalytic lignin depolymerization to yield ethylbenzene chemicals are green, sustainable and environmentally friendly methods. In this study, a series of Ni-CeO 2 /H-ZSM-5 catalysts were prepared via the precipitation method, which catalytically degraded the β-O-4 chemical bonding structure to yield ethylbenzene chemicals. The 2-(2-methoxy-phenoxy)-1-phenylethanol substance (β-O-4) was selected as a typical lignin model compound for the investigation of the intrinsic depolymerization mechanism and the catalytic performance. The results demonstrated that the introduced CeO 2 active phase can effectively promote the catalytic conversion of the β-O-4 chemical bonding structure to ethylbenzene chemicals. Physicochemical data demonstrate that the reaction pathways and hydrogenation selectivity were effectively regulated and controlled by the tuning of the dehydration and hydrogenolysis processes via the introduction of CeO 2 , which realized the selective adjustment of the redox properties and the surface valence states of active species in the catalytic process due to its excellent oxygen transfer performance.
✓ 已验证
DOI
高影响因子
INORGANIC CHEMISTRY
·
2022
·
IF 5.436
Danyang Dou,Bingjie Cai,Bingbing Zhang,Ying Wang
Nonlinear optical (NLO) crystals are very important for laser technology, but the performances of available NLO crystals are still insufficient for increasing demand. Recently, the exploration of new NLO crystals in non-π-conjugated systems with the heteroatomic tetrahedra is attracting a lot of interest. In this work, we systematically explore the metal sulfamates containing [NH2SO3] groups and four metal sulfamates, namely, Ca(NH2SO3)2·4H2O, Ca(NH2SO3)2·H2O, Pb(NH2SO3)2·H2O, and Pb(NH2SO3)2 were synthesized by aqueous solution and hydrothermal methods. Notably, these metal sulfamates exhibit different crystal structures and optical properties owing to the diverse arrangement of the functional groups in their structures. In addition, due to hydrogen bond regulation, the centrosymmetric (CS) compound Ca(NH2SO3)2·4H2O can transform into noncentrosymmetric (NCS) Ca(NH2SO3)2·H2O, leading to NLO activity. Experimental characterizations and theoretical analysis reveal that these metal sulfamates are ultraviolet transparent and suitable for developing new NLO materials.
✓ 已验证
DOI
高影响因子
ANALYTICAL BIOCHEMISTRY
·
2018
·
IF 2.275
Lufei Zheng,Chao Zhang,Jun Ma,Sihui Hong,Yongxin She,A.M. Abd EI-Aty,Yahui He,Hailong Yu,Haijin Liu,Jing Wang
Herein, an imprinted electrochemical sensor based on graphene-Au nanoparticles incorporated with molecularly imprinted polymer (MIP) was fabricated for determination of 4-nonylphenol (4-NP). Grafted MIP electropolymerized on nanoscale multilayer films electrode was achieved using 4-NP as a template and P-aminothiophenol as a functional monomer . The electrochemical properties of the MIP nanoscale multilayer membrances were characterized and measured by cyclic voltammetry and differential pulse voltammetry techniques; using ferrocyanide/ferricyanide-redox marker. Several important parameters were optimized and investigated to improve the performance of the sensor. Under the optimized conditions, the developed sensor showed an excellent linear response over the concentration ranges of 50–500 ng mL −1 (4-NP) with a detection limit of 0.01 ng mL −1 (S/N = 3). The developed sensor showed a good selective recognition of 4-NP compared with structural analogue, exhibited a good reproducibility and accuracy with long-term stability. At last, the feasibility of the proposed methodology was successfully applied fordetection of 4-NP in milk and its packaging materials .
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）