Water
·
2025
·Vol. 17
·期 14
·2161
·
IF 3
Qiliang Xiao,Jun Nan
This study presents the development of a novel Cu–Co–O-codoped graphitic carbon nitride (g-C3N4) catalyst for efficient peroxymonosulfate (PMS) activation to degrade sulfamethoxazole (SMX) in aqueous environments. The synthesized Cu–Co–O-g-C3N4catalyst demonstrated exceptional catalytic performance, achieving 90% SMX removal within 10 min—significantly outperforming pristine g-C3N4(14%) and O-doped g-C3N4(22%)—with a reaction rate constant of 0.63 min−1. The superior activity was attributed to the synergistic effects of Cu-Co bimetallic doping and oxygen incorporation, which enhanced the active sites, stabilized metal ions, and minimized leaching. Mechanistic studies revealed a dual-pathway degradation process: (1) a radical pathway dominated by sulfate radicals (SO4•−) and (2) a non-radical pathway driven by singlet oxygen (1O2), with the latter identified as the dominant species through quenching experiments. The catalyst exhibited broad pH adaptability and optimal performance at neutral to alkaline conditions. Characterization techniques (XRD, FTIR, XPS) confirmed successful doping and revealed that oxygen incorporation modified the electronic structure of g-C3N4, improving charge carrier separation. This work provides a sustainable strategy for antibiotic removal, addressing key challenges in advanced oxidation processes (AOPs), and highlights the potential of multi-heteroatom-doped carbon nitride catalysts for water purification.
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JOURNAL OF FOOD ENGINEERING
·
2024
·
IF 5.3
Jingye Zhu,Suping Zhu,Jianshe Chen,Yong Chen
Emulsions stabilized by normal starch-based emulsifier could be easily digested for fat absorption. In this study, a novel design of resistant starch-based emulsifier (RSE) is expected to be a promising strategy in reducing fat digestibility . Waxy corn starch (WCS) was used to prepare RS by pullulanase debranching, and then RS was esterified with different hydrophobic agents of octenyl succinic anhydride (OSA) and dodecenyl succinate anhydride (DDSA) to prepare OSA/DDAS modified RSE (OSA-R and DDSA-R). The structure and emulsification properties of OSA-R and DDSA-R were comprehensively investigated. The results showed that RS content of WCS was increased from 0.17% to 35.52% by pullulanase debranching and then RS contents of OSA-R (37.53%) and DDSA-R (42.18%) could be further increased by OSA/DDSA modifications. Moreover, both OSA-R and DDSA-R stabilized emulsions were stable under neutral and alkaline conditions and were of good quality within 10 days of storage at 4 °C. Compared with OSA-R stabilized emulsion, DDSA-R stabilized emulsion had higher acid stability, CaCl 2 stability and storage stability. Furthermore, in vitro digestion study demonstrated that both OSA-R and DDSA-R stabilized emulsions exhibited strong resistance against digestion. In conclusion, two high resistant starch-based emulsifiers obtained by OSA/DDAS modifications could be used for stabilizing oil-in-water emulsions, which provide important references for the selection of RSE esterification agents and the application of RS in food industry.
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APPLIED SURFACE SCIENCE
·
2025
·
IF 6.9
Xuan Xuan,Shuang Meng,Guozhe Sui,Ning Liu,Dongxuan Guo,Dantong Zhang,Xue Yang,Yue Li,Jinlong Li
The rational design of solid-solution-oxide heterostructure presents a promising pathway to synergize band structure engineering and interfacial charge dynamics in advanced photocatalysis. Herein, a novel S-scheme CeZnO/ZnO heterojunction was fabricated through solid-solution lattice engineering, where Ce-O-Zn covalent bonding networks are strategically constructed at phase boundaries via controlled exceedance of the Ce solubility limit in ZnO matrix. Coupled with Ag nanoparticle-induced localized surface plasmon resonance (LSPR), this hierarchical system achieves remarkable visible-light-driven tetracycline (TC) degradation (90.4 % within 60 min). The outstanding degradation performance can be attributed to the formation of a built-in electric field at the Ce-O-Zn interface, the presence of oxygen vacancies, and the synergistic catalytic effect of Ag nanoparticles. Density functional theory (DFT) calculations and experimental characterizations further reveal that the CeZnO/ZnO heterojunction facilitates S-scheme charge transfer via Ce-O-Zn bonds, improving charge transfer and separation efficiency while preserving the strong redox capability of photo-generated charge carriers. This study provides valuable insights into the design of high-performance heterojunction photocatalysts and carries significant implications for the development of photocatalysis.
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Inorganics
·
2025
·Vol. 13
·期 8
·275
·
IF 3
Hongmei Wang,Xiaoxu Zhang,Yifei Niu,Zichuan Ma
The recovery and control of volatile organic compounds (VOCs) have gained significant attention. Supported sulfonic acid materials show potential in converting aromatic VOCs into non-volatile sulfonic acid derivatives. However, their effectiveness is closely tied to the anchoring state of the sulfonic acid groups. In this study, two supported sulfonic acids, SSA@CdO and SSA@CaO, were synthesized via the respective reactions of CdO and CaO with chlorosulfonic acid to investigate how the properties of the supports influence sulfonic acid anchoring and reactivity towardo-xylene. Comprehensive characterization and performance tests revealed that sulfonic acid groups on CdO were covalently bonded, forming positively charged sites ([O0.5Cd–O]ɗ−–SO3Hɗ+) with high loading (9.7 mmol/g), enabling excellento-xylene removal (≥95.6%) and adsorption capacity (51.67–91.59 mg/g) at 130–150 °C. In contrast, ion-paired bonding on CaO formed negatively charged sites ([O0.5Ca]+:OSO3H−), which were inactive in electrophilic sulfonation. This work provides new insights for enhancing supported sulfonic acid materials in VOC treatment.
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ACS Catalysis
·
2025
·
IF 13.1
Zean Xie,Kemeng Song,Yu Ren,Liyu Hou,Runqi Hu,Jianmei Li,Qi Shi,Dong Li,Wencui Li,Xiaoqiang Fan,Lian Kong,Xia Xiao,Zhen Zhao
Recently, some traditional oxide supports, such as nano TiO2 and ZrO2 with high surface energy, have been found to be partially reduced to generate oxygen vacancies and coordinatively unsaturated metal (Mcu) cations as efficient active sites for nonoxidative propane dehydrogenation (PDH). However, the primary challenge in their industrial applications is rapid deactivation because of coke, over-reduction, and aggregation under the reaction conditions of high temperature and reducible atmosphere. Herein, we reported that cost-effective and environmentally friendly Zr-doped TiO2 (TixZr1) prepared by a simple coprecipitation method can be used as a highly efficient and stable catalyst for PDH. Ti3Zr1 exhibited the C3H6 formation rate [r(C3H6)] of 0.6 mmol g–1 min–1 at 550 °C, which was 17 times that of pure TiO2, and a deactivation constant (Kd) 2.8 times lower than that of commercial TiO2. Moderate Zr doping promotes the generation of surface active lattice oxygen, which can be reduced at a relatively low temperature to form oxygen vacancies and Ti(Zr)cu–O acid–base pairs as the active sites for PDH, and their number is in line with r(C3H6) of TixZr1 catalysts. With the increase of the Zr doping amount, the bulk crystal phase of TixZr gradually transforms from Zr-doped anatase TiO2 to TiZrO4 via Ti2ZrO6 with enhanced thermostability, which can inhibit over-reduction and aggregation of the nano-oxide.
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Surfaces and Interfaces
·
2025
·
IF 6.3
Chunjing Shi,Menghang Wang,Zhenyu Zhang,Hongxiu Zhou,Pengfei Hu,Longhua He,Xingzhong Liu,Huaxiang Cai,Zehong Pang
Ceramic dentures differ from those produced by additive manufacturing, and manual polishing is employed for ceramic dentures due to their hard-brittle nature, complex shapes, and thin-walled structures with thicknesses less than 1.0 mm. This presents challenges for the medical and manufacturing industries. To address these challenges, we prepared a novel ternary composite of Fe 3 O 4 @TiO 2 @PB (Prussian blue) to establish a photo-Fenton system. This composite enhances the transport of photogenerated electrons and facilitates the generation of radicals, demonstrating high photocatalytic activity for the polishing and degradation of pollutants without the need for sacrificial agents. Meanwhile, Fe 3 O 4 @TiO 2 @PB was utilized to develop a new photocatalytic magnetorheological polishing slurry. The slurry consisted of sorbitol, hydrogen peroxide, Fe 3 O 4 @TiO 2 @PB, and ceria (0.025 wt. %). After polishing, the surface roughness (Sa) decreased from 5.538 to 0.081 μm, representing a reduction of 98.54 % compared to the pristine surface. Due to photogenerated hydroxyl radicals, the Si-OH and Li-OH bonds can be created on the surface of the ceramic dentures, facilitating defects removal. Before and after polishing, the ceramic dentures enhanced the inhibition rates of Escherichia coli and Staphylococcus aureus from 50 % to 74 % and from 49 % to 80 % over the course of one day, respectively. Through irradiation with simulated sunlight, Fe 3 O 4 @TiO 2 @PB generates electrons, holes, and hydroxyl radicals, leading to the degradation of amoxicillin (AMOX) and polysorbate (PS20) by up to 99 % within 60 min. Additionally, Fe 3 O 4 @TiO 2 @PB was successfully separated and reused from the developed slurry. Therefore, the designed and developed novel ternary composite, Fe 3 O 4 @TiO 2 @PB, achieves photocatalysis, photodegradation, and recycling, offering new solutions for the medical, manufacturing, and environmental industries.
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SEPARATION AND PURIFICATION TECHNOLOGY
·
2025
·
IF 9
Zhengming He,Cong Li,Jingzhen Su,Kai Zhang,Jiaxue zhu,Ren Cai,Yunshu Zhang,Jieming Yuan,Xiaohong Guan
Iron-based catalysts are generally used to activate oxidizing species, such as hydrogen peroxide by increasing homogeneous active substances like free radicals, to promote the degradation of organic matter. However, less attention has been paid to the reactions on the surface or the generation of heterogeneous metal-oxo species. Herein, oxygen vacancies (Vo) were introduced into Fe oxides by a calcination-induced hetero-atom doping modification. The characteristic peak of the heterogeneous hypervalent iron-oxo [≡Fe IV =O] species in the UV–Vis spectrum at 371 nm was observed. In the context of electrochemical experiment, Vo-rich Mn-Fe 2 O 3 significantly enhanced the electron conduction of sulfamethoxazole and H 2 O 2 , while simultaneously inhibiting the self-decomposition of potassium ferrate (Fe(VI)). Regarding the H 2 O 2 generated during the self-decomposition process of Fe(VI), Vo-rich Mn-Fe 2 O 3 can accelerate the degradation of sulfamethoxazole, increasing the reaction rate to 0.1081 min −1 (with a 30.05 % improvement in removal efficiency). Density functional theory calculations indicate that Vo leads to an enhanced capture of O atoms by the low-coordinated Fe atoms, promoting the anchoring of H 2 O 2 and the formation of the active ≡Fe IV =O with a higher spin state. This work proposes heterogeneous reactive species on the surface of metal oxidase, constructing Vo as the O atom capture sites in iron-based oxides to facilitate the formation of ≡Fe IV =O and the degradation of organic compounds.
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JOURNAL OF THE AMERICAN CERAMIC SOCIETY
·
2025
·Vol. 108
·期 12
·e70119
·
IF 3.8
Shaobo Yang,Xian Liu,Chenxi Liang,Jiali Li,Yujie Ma,Sijie Kou,Juanli Deng,Bo Chen,Shangwu Fan
The study investigated the hydrothermal corrosion behavior of Y 2 O 3 -Al 2 O 3 -SiO 2 (YAS) and CaO-Y 2 O 3 -Al 2 O 3 -SiO 2 (CYAS) glass interlayers in SiC/SiC composite joints under simulated pressurized water reactor (PWR) conditions and evaluated their effects on mechanical performance. The corrosion rate of the YAS joint was ∼2.7 mg/(cm 2 ·day), primarily due to the rapid dissolution of SiO 2 , which triggered pitting corrosion and void formation. While the Y 2 Si 2 O 7 exhibited good stability, degradation of the glass network caused the hydrolysis of Al species, forming stable AlO(OH) corrosion products. These processes severely damaged the structural integrity, reducing shear strength to ∼6 ± 2 MPa after 15 days, making it unsuitable for application. In contrast, the CYAS joint showed superior corrosion resistance, with a corrosion rate of ∼0.16 mg/(cm 2 ·day), only 2.2% of the YAS joint. The CYAS joint maintained structural integrity and interface bonding. During corrosion, Y 2 Si 2 O 7 crystals formed, while a layer of corrosion intermediates covered and eventually transformed into AlO(OH) particles. After 25 days, shear strength remained at 26 ± 2 MPa, still satisfying service requirements. The hydrothermal corrosion mechanism of YAS-based glasses basically involved the breakdown of the glass network and formation of stable products, including Y 2 Si 2 O 7 and AlO(OH).
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JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
·
2025
·
IF 6.2
Shuyu Tang,Hongxi Zhang,Ji Li,Jun Huang,Liang Wei,Jing Yang,Xiande Yang
The valorization of lignin into valuable chemicals is a cornerstone of future biorefineries, but it is often hindered by the need for harsh reaction conditions. Electrochemical oxidation offers a promising green alternative, yet many systems lack mechanistic clarity, which impedes rational design. Herein, we report a simple and highly efficient electrochemical system using tetrabutylammonium tetrafluoroborate (TBABF4) in methanol for the selective cleavage of lignin’s β-O-4 ether bond under ambient conditions. On a model compound, this metal-free system achieved over 97% conversion with excellent selectivity toward high-value aldehyde products. Mechanistic studies revealed a dual-pathway mechanism. Crucially, when this mechanistically guided protocol was applied to bagasse lignin, it demonstrated effective depolymerization, leading to the significant cleavage of native β-O-4 bonds, resulting in a total liquid product yield of 15.6%, which included valuable aromatic products such as benzaldehyde dimethyl acetal (7.9% yield). This work not only presents a practical method for lignin upgrading but also provides a clear mechanistic roadmap for the future design of selective electrocatalytic processes.
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PubMed
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REPRODUCTIVE TOXICOLOGY
·
2025
·
IF 2.8
Zhiheng Shangguan,Kaiqiang Yang,Qi Pan,Hongli Hu,Pan Wang
Endocrine disruptors are environmental chemicals that can interfere with the endocrine system. However, research on endocrine disruptors that interfere with androgen action is still limited. In this study, two new environmental androgens were identified. N-Phenyl-2-naphthylamine (PNA) and o-tolidine are dye intermediates widely used in industry to produce organic pigments. We found that both PNA and o-tolidine activated androgen receptor (AR) transcriptional activity in the luciferase reporter assay and bound to AR-ligand binding domain directly in the surface plasmon resonance analysis. In vivo studies showed that PNA and o-tolidine induced the proliferation of seminal vesicle cells and increased seminal vesicle weight in immature male rats, indicating that these two compounds had androgenic activity in vivo . In addition, in mature male rats, PNA and o-tolidine reduced sperm concentration and motility and increased sperm deformities, and caused atrophy of the seminiferous tubules of the testis and decreased testosterone levels. These results suggest that PNA and o-tolidine are novel environmental androgens, which bind and activate AR and have toxicological effects on male reproductive function.
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PubMed
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Micro & Nano Letters
·
2018
·Vol. 13
·期 10
·1386-1389
·
IF 0.841
Chenhao Zhao,Jiangshui Luo,Zhibiao Hu
Seeking for the porous carbon with suitable structure and morphology has been a key to improve the lithium storage performance of carbon/selenium composite. In this work, the hierarchical porous N,O Co-doped carbon has been prepared by an initial hydrothermal carbonisation and subsequent activation route using the chitosan as raw material. The carbon obtained at 600°C possessing primary micropores and surface macropores presents high specific surface area (809. 3 m 2 g −1 ) and low porous size, and the selenium with amorphous structure is uniformly encapsulated into the micropores of this carbon to form carbon/selenium composite. As the cathode materials of lithium ion battery, this composite delivers a discharge capacity of 446.9 mAh g −1 at rate of 0.24 C after 100 cycles. At a high rate of 4.8 C, this composite still shows a stable discharge capacity of 342.8 mAh g −1 . These results suggest that this composite may be promising for practical applications for lithium-selenium battery.
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BIORESOURCE TECHNOLOGY
·
2026
·
IF 8.2
Pengyu Li,Lin Li,Wenwen Wang,Yunping Han,Tianlong Zheng
Biotrickling filter achieved 95% o-xylene removal with EC of 35.36 g/(m 3 ·h). • Tax4Fun revealed 22.3% enrichment of xenobiotic pathways in biofilm community. • o-Xylene catabolic pathway reconstructed from activation to mineralization. • Biofilm deployed hierarchical meta-, ortho-, and gentisate dioxygenase strategies. In this study, gaseous o-xylene was removed using a laboratory-scale biotrickling filter packed with polyurethane foam cubes. The maximum elimination capacity of 35.36 g/(m 3 ·h) can be achieved at an inlet concentration of 0.89 g/m 3 , a flow rate of 0.25 m 3 /h, and an empty bed residence time of 76 s. The adsorption of o-xylene by the packing medium followed the Freundlich isotherm model, and approximately 64% of the o-xylene carbon was mineralized to CO 2 during steady-state operation, with the remainder utilized by microorganisms. Tax4Fun-based metabolic reconstruction revealed a 22.3% enrichment of xenobiotic biodegradation pathways in the biofilm community relative to the planktonic phase, with the xylene degradation pathway (ko00622) enriched 1.33-fold. The o-xylene catabolic pathway was reconstructed: upper-pathway methyl activation by toluene/o-xylene monooxygenase, nearly exclusive to the biofilm; ring cleavage through hierarchical dioxygenases spanning meta-, ortho-, and gentisate routes; and lower-pathway integration into the tricarboxylic Acid cycle (TCA). Pseudomonas , Mycobacterium , and Comamonas were identified as potential functional genera. The near-absence of anaerobic benzylsuccinate pathway enzymes exclusively aerobic degradation. Metabolism-related functions dominated the biofilm functional profile (75.02%). o-Xylene metabolism occurred predominantly on the packing-media biofilm rather than in the circulating solution, which indicated that enriching a metabolically specialized biofilm on high-surface-area porous packing is the key to efficient and stable performance. This study provides a scientific foundation for developing volatile organic compounds prevention and control strategies. Download: Download high-res image (211KB) Download: Download full-size image
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