ChemistrySelect
·
2025
·Vol. 10
·期 27
·e01268
·
IF 2
Zhengfang Yang,Qianqian Guo,Qisheng Wang,Qing Wang,Guanbin Wen,Bin Zhang,Yanli Nie
Graphical Using macadamia nut shell from Yunnan as raw material to prepare antibacterial material can save resources. Combining NiO with AC, adding Bi and Fe to optimize antimicrobial properties and magnetic properties.A kind of antibacterial, adsorption-degradable, recyclable and reusable material was constructed.The composite materials show a good prospect in the practical application of water treatment. Although inorganic antibacterial materials that use photocatalytic technology are widely used to inhibit bacterial growth in water bodies, the external light environment limits the efficient utilization of photocatalytic antibacterial materials. The antibacterial materials are usually in powder form and are not conducive to recycling and reuse, limiting their development in practical applications. The main antibacterial ingredient (nickel oxide) was combined with Macadamia nutshell activated carbon (AC) to maintain efficient contact between bacteria and antibacterial active ingredients to apply the material for water treatment. First, different activators (H 3 PO 4 , ZnCl 2 , and KOH) were used to prepare activated carbon (AC) from Macadamia nutshells. Among the three activators, the AC prepared with H 3 PO 4 exhibited the largest specific surface area with well-dispersed pores. Then, Bi and Fe were doped to AC-NiO to improve their antibacterial and magnetic properties. After doping, the antibacterial rate increased to 95% with significantly improved magnetic properties. Moreover, AC-NiO/Bi and AC-NiO/Fe exhibited three antibacterial mechanisms: physical damage, ionic dissolution, and oxidative stress. Finally, the antibacterial test was performed on real water samples from Dianchi Lake in China. Results suggested that AC-NiO/Bi and AC-NiO/Fe could destroy microorganisms in river water samples. The material showed significant adsorption and degradation efficiency for malachite green, methylene blue, and methyl orange dyes. Since the composite material possessed excellent magnetic separation performance, it was easily recovered after use, effectively avoiding secondary pollution while reducing the material cost in practical applications.
研究领域:
环境科学
·
材料科学
·
水处理技术
·
纳米技术
·
抗菌工程
✓ 已验证
产品关联
DOI
高影响因子
RENEWABLE ENERGY
·
2025
·
IF 9.1
Hongming Liu,Junhao Cui,Zhiyang Zhao,Yongqi Ren,Bailong Chen,Longzhi Li
The traditional utilization of lignin mainly relies on direct combustion, which leads to low energy efficiency and environmental pollution, becoming a key bottleneck restricting the efficient utilization of all components of lignocellulose. This paper introduced a new strategy of microwave-assisted lignin hydrogenolysis over bifunctional catalyst Fe-Co/AC to achieve high-value conversion of lignin. This article firstly investigated the hydrogenolysis characteristics and product distribution patterns in the presence of Fe-Co/AC through catalyst characterization and adsorption calculation, as well as hydrogenolysis experiments. The results showed that the formation of Fe-Co alloy in the catalyst resulted in highly catalytic activity and selectivity for the hydrogenolysis process. Next, the intrinsic effects of solvent hydrogen donors and microwaves on lignin hydrogenolysis were discussed, through comparative experiments of hydrogenolysis in absence of catalyst and microwave-assisted pyrolysis. Lastly, attention was paid to calculate the adsorption characteristics and bond length changes of different substrates under metal components in order to reveal the mechanism of Fe-Co for synergistic catalyzing lignin hydrogenolysis, and to propose a potential pathway for lignin directed conversion into phenol. The findings provide a new approach for efficient bond breaking and intermediates hydrogenation of solid wastes such as lignin and plastics to obtain high value-added products.
研究领域:
化学工程
·
环境科学
✓ 已验证
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2024
·
IF 8.1
Chengsi Hou,Shuai Peng,Zhengwei Zhou,Longqian Xu,Yue Wang,Jianfeng Zhu,Pan Zhang,Zuofeng Chen,Zhendong Lei,Deli Wu
Flow Electrode Capacitance Deionization (FCDI) has been frequently used for NH 4 + recovery from wastewater as a low-energy, high-efficiency electrochemical technique. However, issues such as high cost (mainly due to the use of ion-exchange membranes) and weak selectivity have limited the expansion of their applications. In this study, SDS-AC was prepared and applied in microfiltration membrane FCDI (MFFCDI) to recover ammonia (NH 4 + ). The material characterization results showed that the surfactant was stably loaded on the AC surface, and the adsorption capacity of modified AC for NH 4 + was greatly enhanced. During the recovery process, NH 4 + migrated to the electrode chamber and immobilized on the SDS-AC, while Na + migrated to the electrode chamber and then released to the desalination chamber due to co-ion repulsion. Based on this principle, selective recovery of NH 4 + was achieved (selectivity = 3.51). At the end of the recovery, more than 70 % of the NH 4 + was immobilized on the SDS-AC and the NH 4 + could be desorbed with NaOH. The results of the recycling experiments showed good stability of the SDS-AC-based MFFCDI system, and the recovery of food waste fermentation liquor demonstrated that the system could realize the selective recovery of NH 4 + from complex feed water. In summary, the SDS-AC-based MFFCDI technology has great potential for the application of NH 4 + recovery from wastewater. Although the scale of this study was limited to the laboratory stage, it still shows potential for application in engineering. In the future, larger scale applications in engineering will be carried out and the environmental and economic benefits of the technology will be assessed through a full life cycle analysis.
研究领域:
环境科学
·
电化学工程
✓ 已验证
产品关联
DOI
高影响因子
Results in Engineering
·
2025
·
IF 7.9
Ruiqi LI,Jie LING,Dongqiang LEI
The key to photocatalytic conversion of CO 2 is to improve the efficiency of solar energy utilization. Numerous studies have been devoted to modulating the forbidden bandwidth of photocatalytic materials, thereby altering the response of catalysts to light irradiation. In this paper, CO 2 conversion efficiency enhancement by photothermal catalytic means using precious metal-free LDHs@AC composites. The results show that photothermal catalytic conversion is 3.3 times more efficient than photocatalytic conversion in CO 2 conversion. The photocurrent transient response results show that the LDHs@AC material in the photothermal catalytic reaction, at higher experimental temperatures, the transfer of electrons from Ti 1 Li 3 Al 2 -LDHs to move the AC is faster, and the rate of the redox reaction is increased, which significantly improves the photocatalytic performance of the LDHs material.
研究领域:
材料科学
·
环境科学
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
ENVIRONMENTAL TECHNOLOGY
·
2020
·
IF 2.213
Huiqiang Wang,Minghua Liu,Xin Luo,Yifan Liu,Shuna Hou,Yuancai Lv
ZnFe2O4/AC composites were prepared by a one-pot hydro-thermal method using the activated carbon as a carrier. The structural, textural and surface properties of the adsorbent have been comprehensively characterized by scanning electron microscopy (SEM), X-ray diffraction (XRD), Raman spectra, physical adsorption instrument (BET) and TG-DSC analysis. The removal capacities of the composites were investigated via testing the adsorption capacity at the self-made desulfurization equipment. The process of adsorption for SO2 was analysed by kinetic model and thermodynamic model. The results show that the adsorption capacity of ZnFe2O4/AC composites adsorption kinetics process was conformity with the first kinetics mode1. The adsorption process was in accordance to the Langmuir and Freundlich equation. Additionally, the whole process belonged to spontaneous and exothermic reaction.
研究领域:
环境科学
·
材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Journal of Nanotechnology
·
2018
·
IF 0
Hui-qiang Wang,Ming-hua Liu,Xin Luo,Yi-fan Liu,Fei-er Chen,Yuan-cai Lv
ZnFe2O4/AC composites were prepared by the one-pot hydrothermal method using the activated carbon (AC) as a carrier. The synthesis conditions were optimized by a single-factor experiment. The structural, textural, and surface properties of the adsorbent have been comprehensively characterized by scanning electron microscopy (SEM), X-ray diffraction (XRD), Fourier-transform infrared (FT-IR) spectroscopy, Brunauer–Emmett–Teller (BET) measurements, and X-ray photoelectron spectroscopy (XPS) analysis. The SO2 removal capacities of the composites were investigated via testing the adsorption capacity at the self-made desulfurization equipment. The results show that the adsorption capacity of ZnFe2O4/AC composites is much higher than that of the AC and ZnFe2O4 samples, respectively. The composite overcomes the disadvantages of the traditional sintering, showing a very high desulfurization performance. The breakthrough time was 147 min, and the sulfur adsorption capacity could reach 23.67% in the desulfurization performance test.
研究领域:
材料科学
·
环境科学
✓ 已验证
产品关联
DOI
Molecular Catalysis
·
2023
·
IF 4.6
Wujian Zhang,Weijian Ge,Yiping Jin,Mingming Dang,Panpan Zhang,Wenfeng Han,Ying Li,Zongjian Liu,Haodong Tang
Loaded noble metal redispersion is an important way to solve catalyst sintering. However, how to redisperse at low temperatures or carbon-based noble catalysts is a difficult problem. In this paper, we report this phenomenon occurring on PdCu alloy catalysts, where small-sized PdCu alloys can be realized from sintered large-sized PdCu alloys on carbon supports in a CO/O 2 atmosphere. The mechanism of redispersion is elucidated by XPS, TEM and DFT calculations. The main reason for the redispersion is the formation of the PdCuOx intermediate, which can easily migrate to the nearby catalyst surface and then be reduced to smaller PdCu alloy nanoparticles. This work provides a deeper understanding of the redispersion phenomenon and provides certain applications in industry.
研究领域:
催化
·
材料科学
·
化学工程
✓ 已验证
DOI
高影响因子
JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY
·
2024
·
IF 1.5
Zhou Lu-Wei,Chen Kai-Wei,Dai Xiao-Jun,Qiao Tai-Fei,Liu Hong-Yu,Lu Ji-Gen,Wang Peng,Gong Chun-Hui,Deng Shao-Gang,Xia Ming,Ni Fei,Tang Guo-Min,Zhang Yong-Bing,Yang Yi
Cu/Cu 2 O-modified activated carbon composites (Cu/Cu 2 O@AC) were synthesized via an one-step solvothermal method. The characterization results indicated that copper was uniformly dispersed on the surface of AC as nano-sized Cu 0 and Cu(I), which allowed Cu/Cu 2 O to make full contact with I − . The high specific surface area of Cu/Cu 2 O@AC and the affinity of Cu + for I − led to the equilibrium adsorption capacity within forty minutes. Additionally, the removal of trace I − (300 μg L −1 ) at pH = 3 by Cu/Cu 2 O@AC reached 96.4%. This work provides a promising application for the inexpensive and efficient capture of trace iodine from medical wastewater. Graphical abstract We synthesized Cu/Cu 2 O@AC composites for adsorption of iodide ions in solution.
研究领域:
环境科学
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
Drug Design Development and Therapy
·
2022
·
IF 4.319
Jin Wang,Ye Qian,Xuemin Gao,Na Mao,Yucong Geng,Gaojie Lin,Guibin Zhang,Han Li,Fang Yang,Hong Xu
Background N-Acetyl-seryl-aspartyl-lysyl-proline (Ac-SDKP) is a short peptide with an anti-silicosis effect. However, the short biological half-life and low plasma concentration of Ac-SDKP hamper discovery of specific targets in organisms and reduce the anti-silicosis effect. A novel peptide, Ac-SDK (biotin) proline, termed “Ac-B”, with anti-fibrotic properties was synthesized.Methods Ac-B was detected quantitatively by high-performance liquid chromatography. Phagocytosis of Ac-B by the alveolar epithelial cell line A549 was investigated by confocal laser scanning microscopy and flow cytometry. To further elucidate the cellular-uptake mechanism of Ac-B, chemical inhibitors of specific uptake pathways were used. After stimulation with transforming growth factor-β1, the effects of Ac-B on expression of the myofibroblast marker vimentin and accumulation of collagen type I in A549 cells were analyzed by Western blotting. Sirius Red staining and immunohistochemical analyses of the effect of Ac-B on expression of α-smooth muscle actin (SMA) in a rat model of silicosis were undertaken.Results Ac-B had good traceability during the uptake, entry, and distribution in cells. Ac-B treatment prevented an increase in α-SMA expression in vivo and in vitro and was superior to that of Ac-SDKP. Caveolae-mediated uptake of Ac-B by A549 cells led to achieving anti-epithelial–mesenchymal transformation (EMT) effects.Conclusion Ac-B had an anti-fibrotic effect and could be a promising agent for the fibrosis observed in silicosis in the future.
研究领域:
药理学
·
肺科学
·
细胞生物学
✓ 已验证
DOI
PubMed
高影响因子
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
·
2020
·
IF 3.573
Qiqi Zhou,Guijian Liu
The presence of sulfa antibiotics in water is becoming increasingly serious and actions need to be taken to establish an effective wastewater purification process for their removal. MIL-101(Cr)@AC was prepared by incorporating activated carbon into the MIL-101(Cr) framework to reduce unused voids in MIL-101. MIL-101(Cr)@AC has a high specific surface area and was successfully synthesized and activated with urea. In this study, the adsorptive removal of the sulfonamide antibiotic, sulfacetamide (SA), from wastewater was studied using urea-activated MIL-101(Cr)@AC for the first time. High SA adsorption efficiency was observed, and an adsorption equilibrium was reached within approximately 60 min. The adsorption kinetics and isotherm records were best fitted using the Langmuir model and a pseudo-second-order model, respectively. Therefore, according to the result of adsorption, a possible mechanism was proposed. Hydrogen bonding between −NH2 on the grafted urea-MIL-101(Cr)@AC and −SO2 groups in SA resulted in an increase in adsorption efficiency. In addition, urea-MIL-101(Cr)@AC exhibited excellent reusability, which is attractive for potential applications in adsorbing SA from wastewater.
研究领域:
环境科学
·
材料科学
·
生物医药
✓ 已验证
产品关联
DOI
高影响因子
Molecular Catalysis
·
2023
·
IF 4.6
Donglin Huang,Wulin Song,Hongmei Zhao,Meng Li,Liang Wei,Hongxi Zhang
There are limited renewable sources of aromatic chemicals, with lignin being one of the most prominent, accounting for approximately 30% of the planet's organic carbon. Due to its intricate and irregular structure, lignin is recalcitrant to chemical conversion, often resulting in low yields of mixtures of products when it is depolymerized. This study synthesized a CeO 2 /AC catalyst via an impregnation technique and then explored its ability to depolymerize lignin via an oxidation-reduction strategy. The CeO 2 /AC catalyst efficiently depolymerized lignin by an oxidation-reduction strategy. At 200 °C, an argon pressure of 1 MPa, and a reaction time of 4 h, the conversion of the lignin model compound reached 98.5%. When using lignin derived from poplar, birch, pine, and cotton stalk, the total yields of phenolic monomers were 36.2 wt.%, 31.2 wt.%, 17.4 wt.%, and 12.1 wt.%, respectively. The CeO 2 /AC catalyst exhibited a higher surface oxygen vacancy concentration than CeO 2 , which was crucial for facilitating the hydrogenolysis of lignin.
研究领域:
催化化学
·
可再生资源转化
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
CHINESE JOURNAL OF CATALYSIS
·
2023
·
IF 16.5
Xingzong Dong,Guangye Liu,Zhaoan Chen,Quan Zhang,Yunpeng Xu,Zhongmin Liu
Compared with the rapid deactivation of the Pd/AC catalyst, an eco-friendly Pd-[DBU][Cl]/AC ([DBU][Cl], 1,8-diazabicyclo[ 5.4.0 ]undec-7-ene hydrochloride) catalyst with enhanced stability was synthesized and applied in the hydrochlorination of acetylene. The Pd-20[DBU][Cl]/AC catalyst exhibits 96.7% acetylene conversion and 98.9% selectivity of vinyl chloride within the 24 h evaluation under the conditions of T = 180 °C, GHSV(C 2 H 2 ) = 360 h –1 and V (HCl)/ V (C 2 H 2 ) = 1.2. The enhanced stability of the Pd-[DBU][Cl]/AC catalyst is attributed to the prevention of the reduction of Pd(II) to Pd(0), the inhibition of the formation of coke deposition on the catalyst surface, and the reduction of the loss of Pd species during the reaction. TPD characterization and DFT theoretical simulations confirmed that the PdCl 2 -[DBU][Cl] complex has stronger adsorption of HCl and weaker adsorption of C 2 H 2 and C 2 H 3 Cl compared to PdCl 2 . Furthermore, the catalytic mechanism of acetylene hydrochlorination over the PdCl 2 and PdCl 2 -[DBU][Cl] site was put forward based on theoretical simulations. The good activity and stability of Pd-20[DBU][Cl]/AC in the 60 h lifetime test indicates that it is likely to be a promising alternative to HgCl 2 catalysts.
研究领域:
催化化学
·
环境科学
·
材料科学
✓ 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）