COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
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2024
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IF 4.9
Siyi Zhou,Hao Cheng,Sridhar Komarneni,Jianfeng Ma
In this study, a cobalt-doped nickel disulfide (Co-Ni 3 S 2 ) catalyst was prepared by a one-step hydrothermal method, which was grown on the surface of firm and dense three-dimensional porous nickel foam (NF). Although researchers have conducted extensive research on heterogeneous catalytic ozonation (HCO) over the past decades, the development of highly efficient, easily separable, stable, and recyclable HCO catalysts is still a bottleneck for practical applications. Taking p-nitrophenol (PNP) as the targeted pollutant, the synergistic effect of Co-Ni 3 S 2 /NF composites and ozone was studied. The results show that Co-Ni 3 S 2 /NF with different doping ratios can degrade PNP by more than 99% within 40 minutes, showing high activity. At the same time, in the cycle experiment, Co-Ni 3 S 2 /NF showed good stability and recyclability compared with the powder catalyst and therefore, the former could reduce water treatment cost. We also found that in the Co-Ni 3 S 2 /NF/O 3 system, the production rates of 1 O 2 , •OH and O 2 •- can be greatly improved, and the process of degradation is synergistic with both non-radicals and free radicals.
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CHEMICAL ENGINEERING JOURNAL
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2024
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IF 13.3
Xinyi Zhang,Rongshuo Guo,Hongqing Wang,Zhijun Zhang,Yinxiang Chen,Ye Zhang
In aquatic environments, the coexistence and interaction of multiple the pollutants complicate remediation process. This study focuses on developing a defective-enriched S-scheme heterojunction of K 3 PW 12 O 40 @WS 2 (KPW@WS 2 ) with hollow structure for the simultaneous removal of tetracycline (TC) and hexavalent uranium (U(VI)) in wastewater. The internal electric field (IEF) within this heterojunction plays a crucial role in efficiently separating photo-generated carriers, creating high reduction and oxidation active sites. The band structure and optical properties suggest that WS 2 -Vs have a narrower band gap energy compared to conventional WS 2 , leading to improved charge carrier separation and transfer rates. Density functional theory (DFT) calculations support the reduced recombination of electron-hole pairs in WS 2 -Vs due to the presence of S vacancies. Experimental results reveal a synergistic effect between the removal of TC and U(VI), with a significant increase in the reaction rate constant for the reduction of U(VI) to 0.0426 min −1 , 1.6 times higher than in a single U(VI) reduction system. Additionally, the reaction rate constant for the oxidation of TC also rises from 0.0573 to 0.0729 min −1 . The study also delves into the photocatalytic mechanism, degradation pathways, and intermediate products. Overall, this research offers an innovative strategy for simultaneous pollutant removal and optimizing photocatalytic redox reactions to enhance solar energy utilization.
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MATERIALS TECHNOLOGY
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2024
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IF 2.9
Li Liu,Siyu Li,Detai Shi,Wei Zhu,Shuangshuang Zhang,Chengzhi Zhou,Tiangui Zhao,Xiaolong Li,Qifu Bao,Jianer Zhou
In this study, hydrothermal-calcination method was employed to synthesize pure vanadium oxide and zinc doped vanadium oxide powders. The crystal structure, morphology, chemical state and light absorption properties of the powders were also thoroughly analyzed. The antimicrobial effect against Candida albicans was evaluated by the circle of inhibition method and plate colony counting method. This study reveals the antibacterial mechanism of oxygen defects generating reactive oxygen species, leading to oxidative stress damage. This study not only demonstrates the potential of vanadium oxides as an efficient antimicrobial agent, but also provides a strong experimental basis and theoretical support for the design and optimization of novel antimicrobial materials by modulating the defect engineering of the materials. This finding provides a new perspective for the development of antimicrobial strategies against microorganisms and has important application prospects for the clinical treatment of Candida albicans infections.
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CHEMISTRY-A EUROPEAN JOURNAL
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2025
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IF 3.7
Yuanming Feng,Yunpeng Bi,Yifei Wang,Fang Yang,Guangxing Yang,Yuguang Jin,Xiaoyue Wan,Yihu Dai,Yanhui Yang,Dan Yang,Chunmei Zhou
Graphical Supported AuPd alloy, Au@Pd core-shell, Au−Pd Janus particle and Au+Pd mixture catalysts with different configurations were prepared to selectively oxidize GLY toward DHA, in which AuPd/CNT catalyst with the strongest interaction between the Au and Pd atoms afforded the superior catalytic performance. Gold/palladium binary catalysts have been widely used to the selective oxidation of glycerol to produce value-added chemicals. However, the essential effect of the structure of Au/Pd binary catalysts on the catalytic performance has not been elucidated yet. In this work, Au, Pd, AuPd alloy, Au@Pd core-shell, and Au−Pd Janus nanoparticle catalysts prepared by sol-immobilization and photochemical deposition methods were employed to the selective oxidation of glycerol toward dihydroxyacetone (DHA). The results showed that the activation of glycerol and oxygen molecule was significantly promoted with the appropriate interaction between Au and Pd atoms. That was, the turnover frequency of glycerol and DHA generation rate over the alloyed AuPd nanoparticles were remarkably higher than those of Au@Pd core-shell and Au−Pd Janus nanoparticle catalysts. It was due to the synergistic effect of Pd and Au atoms remarkably promoted the electron transfer from Pd to Au, resulting in increasing the activity of the exposed Au sites, and moderately inhibiting the activity of the exposed Pd sites, which benefited to generate DHA rapidly. After optimizing, up to 61 % yield of DHA was achieved at 87 % glycerol conversion over the alloyed AuPd catalyst.
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CHEMOSPHERE
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2024
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IF 8.1
Haoyang Liu,Yang Yu,Shengtao Jiang,Haimin Sun,Weixi Zhang,Jianmeng Chen,Dongzhi Chen
The efficient biodegradation of volatile chlorinated hydrocarbons using microbial fuel cells (MFCs) offers a feasible approach for purifying waste gas and alleviating energy crises. However, power generation is limited by poor pollutant biodegradation and slow electron transfer . The bifunctional bacterium Acinetobacter sp. HY-99C was screened and used to improve the performance of a conventional MFC. The inoculation of strain HY-99C into the conventional MFC promoted the formation of a compact biofilm with high metabolic activity and an enriched bifunctional genus ( Acinetobacter ), which resulted in the accelerated decomposition of chlorinated aromatic compounds into biodegradable organic acids. This led to efficient chlorobenzene removal and power generation from the MFC, with a chlorobenzene elimination capacity of 70.8 g m −3 h −1 and power density of 89.6 mW m −2 , which are improved over those of previously reported MFCs. This study provides novel insights into enhancing pollutant removal and power generation in MFCs.
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Surfaces and Interfaces
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2024
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IF 5.7
Zhuangzhuang Xiong,Ziheng Qi,Wenhui Zhang,Mingbo Ji,Fuqiu Ma,Lixia Ying,Guixiang Wang
Anodized aluminum, due to its inherent porous channels and thin protective layer, exhibits poor corrosion resistance and friction performance in severe environments. In this study, an in-situ growth of a NiZnAl-LDH composite coating was developed on the surface of aluminum. Sodium molybdate and ricinoleic acid were used to modify the coating, enhancing both corrosion resistance and friction performance. Various tests, including SEM, infrared, XPS, XRD, and others, were conducted to analyze the structure, composition, and properties of the synthesized coating. The results confirmed the successful synthesis of NiZnAl-LDH with nitrate intercalation, which were subsequently converted to molybdate intercalation through sodium molybdate modification. Electrochemical tests revealed that the corrosion current decreased by a factor of two compared to a plain LDH coating. Friction experiments demonstrated that the co-modified coating exhibited a minimal friction coefficient of 0.23, outperforming the original LDH coating.
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MOLECULES
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2024
·Vol. 29
·期 3
·737
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IF 4.2
Yunhui Liao,Feng Chen,Haishan Tang,Wubliker Dessie,Zuodong Qin
To increase the effectiveness of using typical biomass waste as a resource, iridoids, chlorogenic acid, and flavonoids from the waste biomass ofEucommia ulmoidesleaves (EULs) were extracted by deep eutectic solvents (DESs) in conjunction with macroporous resin. To optimize the extract conditions, the experiment of response surface was employed with the single-factor of DES composition molar ratio, liquid–solid ratio, water percentage, extraction temperature, and extraction time. The findings demonstrated that the theoretical simulated extraction yield of chlorogenic acid (CGA), geniposidic acid (GPA), aucubin (AU), geniposide (GP), rutin (RU), and isoquercetin (IQU) were 42.8, 137.2, 156.7, 5.4, 13.5, and 12.8 mg/g, respectively, under optimal conditions (hydrogen bond donor–hydrogen bond acceptor molar ratio of 1.96, liquid–solid ratio of 28.89 mL/g, water percentage of 38.44%, temperature of 317.36 K, and time of 55.59 min). Then, 12 resins were evaluated for their adsorption and desorption capabilities for the target components, and the HPD950 resin was found to operate at its optimum. Additionally, the HPD950 resin demonstrated significant sustainability and considerable potential in the recyclability test. Finally, the hypoglycemic in vitro, hypolipidemic in vitro, immunomodulatory, and anti-inflammatory effects of EUL extract were evaluated, and the correlation analysis of six active components with biological activity and physicochemical characteristics of DESs by heatmap were discussed. The findings of this study can offer a theoretical foundation for the extraction of valuable components by DESs from waste biomass, as well as specific utility benefits for the creation and development of natural products.
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JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE
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2024
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IF 3.3
Hongzhi Liu,Jihui Lin,Yaowu Hu,Hui Lei,Qian Zhang,Xiaoyu Tao,Dan Zhang,Hong Niu
BACKGROUND The pectin from Ficus carica Linn. (fig) peels is a valuable and recyclable constituent that may bring huge economic benefits. To maximize the utilization of this resource, deep eutectic solvent (DES)-assisted extraction was applied to extract pectin from fig peels, and the extraction process was optimized with response surface methodology. RESULTS When DES (choline chloride/oxalic acid = 1:1) content was 168.1 g kg −1 , extraction temperature was 79.8 °C, liquid–solid ratio was 23.3 mL g −1 , and extraction time was 120 min, the maximum yield of 239.6 g kg −1 was obtained, which was almost twice the extraction of hot water. DES-extracted fig peel pectin (D-FP) exhibited better nature than hot water-extracted fig peel pectin (W-FP) in terms of uronic acid content, particle size distribution, and solubility, but lower molecular weight and esterification degree. D-FP and W-FP had similar infrared spectra and thermodynamic peaks but differed in monosaccharide compositions. D-FP also showed good antioxidant capacities and exhibited better functional activities than W-FP. CONCLUSION These results indicated that D-FP was of promising quality being utilized in food or medical industries and the optimal DES-assisted extraction method might be applied as a sustainable process for the effective extraction of bioactive pectin from fig peels with the excellence of low equipment requirements and simple operation. © 2024 Society of Chemical Industry.
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Journal of Water Process Engineering
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2025
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IF 6.7
Yujian Liang,Zhihong Tu,Qi Wu,Xuezhen Zhang,Xiaomei Tan,Xuan Guan,Jinlan Zhao
To address the significant wastewater discharge from the printing and dyeing industry today, this study employed pyrite-activated persulfate (PS/pyrite) to induce advanced oxidation for the degradation of a representative azo dye, Reactive Black 5 (RB5), and conducted a comprehensive analysis of pertinent influencing factors. Leveraging pyrite's pH self-regulation capabilities, the pyrite/PS system demonstrated robust RB5 degradation across a broad pH spectrum of 3–9, achieving a degradation rate of approximately 96 %. Interestingly, due to the photocatalytic properties of pyrite, the degradation efficiency can be enhanced by 21 % with pyrite under illumination. Subsequently, the degradation of RB5 under illumination is further enhanced in PS/pyrite system, ultimately achieving a degradation rate of almost 100 %. The system maintained an acidic milieu and sustained the release of Fe 2+ , thereby fostering an optimal Fe 2+ /Fe 3+ cycle. In a simulated wastewater environment, the pyrite/PS system exhibited resilience against interference from NH 4 + , NO 3 − , and humic acid (HA), while exhibiting a synergistic catalytic effect with Fe 2+ and enhancing Fe 2+ /Fe 3+ cycling at elevated Cu 2+ concentrations. Electron paramagnetic resonance (EPR) tests and quenching experiments confirmed the generation of both hydroxyl radicals ( OH) and sulfate radicals (SO 4 − ), with SO 4 − serving as the primary radical species. Scanning electron microscopy (SEM) analysis identified rough microparticles as the primary sites for Fe 2+ release and reactivity. UV-spectrophotometry and visual assessment of pollutant discoloration indicated successful disruption of RB5's chromophore ( N N ) structure and naphthalene ring, achieving effective removal. The findings of this research offer valuable insights for the practical application of pyrite/PS systems in the treatment of printing and dyeing wastewaters.
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Journal of Materials Chemistry A
·
2024
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IF 10.7
Zi-Ye Liu,Qian-Yu Wang,Teng Xu,Ji-Ming Hu
Nickel–iron layered double hydroxide (NiFe LDH) shows great performance in the oxygen evolution reaction (OER) due to the interaction between Ni and Fe. However, such an interaction still remains insufficient to achieve lower overpotential. To address this, we employ conjugated polycarboxylate ligands to promote electron transfer between Ni and Fe in NiFe LDH. This results in the formation of high-valence Ni in NiFe LDH, and also strengthens the adsorption of O intermediates at Ni sites. In this study, oxalate and 1,3,5-benzenetricarboxylate (BTC) are used to modify NiFe LDH, synthesized via the gas–solid reaction method and the decomposition of MIL-100(Fe) method, respectively. Oxalate-modified NiFe LDH has a low overpotential of 238 mV and Tafel slope of 38.1 mV dec−1, while BTC-modified NiFe LDH is 230 mV and 36.1 mV dec−1. In addition, both of them can work stably for over 24 h at a current density of 100 mA cm−2. The conjugated polycarboxylate ligand modification method is a new strategy to promote the OER performance and extend long-term stability of NiFe LDH.
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CHEMICAL ENGINEERING JOURNAL
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2025
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IF 13.2
Zhichao Kang,Nannan Li,Xuerong Han,Chenxu Wang,Xiutao Yang,Hongwen Yu
The ecology is seriously endangered by atrazine residue, which is generated and accumulated by agricultural practices. The atrazine-degrading bacterium Paenarthrobacter sp. KN0901 and acid-added microwave hydrochar are used in this work to construct hybrid microorganism-material systems that effectively remove atrazine from the environment. The baseline atrazine degradation rate increased by 25.5 % when H 2 SO 4 -added microwave hydrochar (ISHC) was added, after 72 h of incubation at 15 °C. With the addition of acid-added microwave hydrochar, the number and autoinducer-2 activity of strain KN0901 increased significantly, suggesting the enhanced quorum sensing compared to the free bacterial cells. The biochemical reaction levels in strain KN0901 were regulated as a result of enhanced quorum sensing. The expression levels of genes associated with atrazine biodegradation in strain KN0901 were significantly elevated following the addition of AMHC, leading to an increased production of hydrolases involved in atrazine degradation. Furthermore, the biofilm formation process was improved with AMHC treatment, facilitating a greater exchange of substances between the interior and exterior of the bacterial cells. This enhancement allows for more efficient uptake of atrazine by strain KN0901, thereby promoting the degradation. The findings indicate that acid-added microwave hydrochars improved atrazine degradation by enhancing the quorum sensing of strain KN0901. The atrazine degradation rate in this system increased under different conditions, including changes in the pH, temperature, salt concentration, and heavy metal concentrations. This study presents a novel methodology for the development and application of bioremediation techniques aimed at addressing atrazine contamination in various environmental conditions.
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SEPARATION AND PURIFICATION TECHNOLOGY
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2025
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IF 9
Fulin Wang,Helin Hua,Hui Jia,Dingying He,Zhongyou Jiang,Jiaxin Cao,Shanshan Dong,Zhenxing Zeng,Suhua Chen
The construction of heterojunction is considered to be an effective way to promote the photocatalytic activity, while it is always challenging due to the mismatched lattices of heterojunctional materials and results in an unsatisfactory enhancement of charge carrier separation. It is critical to overcome that lattice mismatch and establish charge transfer channels in heterojunction for achieving high charge transfer and separation. In this study, a red phosphorus/phosphorus doped graphitic carbon nitride (RP/P-CN) type I heterojunction was constructed to boost interfacial charge transfer for Cr(Ⅵ) photoreduction through in situ growing RP on g-C 3 N 4 nanosheets. The formed P − N bonds around interfaces in the RP/P-CN allowed photoexcited charge to rapidly transfer from the conduction band of P-CN to that of RP, which contributed to the significant achievement of Cr(Ⅵ) reduction. The constructed interfacial charge transfer channels largely promoted the photoexcited charge carrier separation in the RP/P-CN. Additionally, the simultaneous RP formation and P doping significantly enhanced the visible light response and the adsorption efficiency of Cr(Ⅵ). As a result, RP/P-CN 1:5 could achieve 99.1 % removal of Cr(Ⅵ) after 20-min visible light irradiation with an achieved apparent kinetic rate constant (k app ) of 0.2289 min −1 , which were much better than the 19.2 % of Cr(Ⅵ) removal by pure g-C 3 N 4 and presented a 21-fold higher k app than pure g-C 3 N 4 (0.0108 min −1 ) achieved, respectively. This study provides a new strategy to design an efficient g-C 3 N 4 based metal-free heterojunction for Cr(Ⅵ) photoreduction.
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