COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
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2022
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IF 5.518
Jun Yu,Bin Hu,Pengfei Nie,Xiaohong Shang,Boshuang Zhang,Zhaoyu Tang,Jianmao Yang,Jianyun Liu
Norfloxacin (NX), as one of the most widely used antibiotics, is becoming a potential pollutant in water. Here, the cobalt-decorated nitrogen-rich carbon material containing abundant carbon nanotubes (Co@C-NCNTs) was synthesized by pyrolysis of the Co,Zn bimetal organic frameworks (Co,Zn-MOF). The introduction of Zn led to the formation of abundant CNTs with high aspect ratio and high N-doping in the carbon metrix. The obtained Co@C-NCNTs catalyst was applied to boost non-radical catalysis of peroxymonosulfate for NX degradation with high efficiency. The release of cobalt was greatly inhibited by Co-N interaction and carbon layer protection. The CNTs amount in Co@C-NCNTs and its catalytic activity were tunable with the Zn/Co ratio. At the optimal Zn/Co ratio, the derived Co@C-NCNTs delivered 92% removal of NX in 30 min, significantly higher than the single Co-MOF based catalyst. Free radical quenching experiments and electron paramagnetic resonance demonstrated the singlet 1 O 2 -dominated degradation process of NX accompanied by the •OH and S O 4 − effect. The electrochemical characterization verified that the electron transfer in the PMS system is greatly enhanced due to the presence of Co@C-NCNTs.
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高影响因子
APPLIED CATALYSIS B-ENVIRONMENTAL
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2022
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IF 24.319
Ming-Hui Sun,Ming-Yu Qi,Zi-Rong Tang,Yi-Jun Xu
Simultaneously utilizing photoinduced electrons and holes to direct splitting of thiols into value-added disulfides and clean hydrogen (H 2 ) fuels conforms the development standards of green chemistry. Herein, a cobalt phosphate (Co-Pi) and reduced graphene oxide (GR) modified CdS photocatalyst is synthesized and utilized for photocatalytic selective conversion of 4-methoxythiophenol (4-MTP) to bis(4-methoxyphenyl) disulfide (4-MPD) coupled with H 2 evolution. In this dual-cocatalyst system, Co-Pi effectively captures and releases the holes from CdS through the chemical state change of Co to accelerate the surface thiols oxidation reaction, while GR is used as an electron collector and an active site for the proton reduction to H 2 . Consequently, the bifunctional GR-CdS-(Co-Pi) photocatalyst demonstrates significantly higher photoactivity than blank CdS. This work affords a new paradigm of incorporating dual-cocatalysts with semiconductor photocatalysts to efficiently take advantage of the photoinduced electrons and holes for photoredox-catalyzed cooperative coupling of organic transformation and H 2 evolution.
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高影响因子
APPLIED CATALYSIS A-GENERAL
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2023
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IF 5.5
Mingyu Cui,Linyang Dong,Zhen Shen,Tiantian Guo,Wei Zhao,Chong Liang,Xutang Liu,Dingkai Wang,Fei Wang,Zhijie Jiang,Shuiyuan Fu
Spinel ferrite has been widely applied in the field of catalytic oxidation with its high selectivity, magnetic separation, and strong chemical stability. In this work, a series of porous carbon supported Co doping spinel copper ferrite (Cu x Co 1- x Fe 2 O 4 @ PC) were prepared via impregnation method for the catalytic oxidation of vanillyl alcohol (VAL) to vanillin (VN). The optimized Cu 0.4 Co 0.6 Fe 2 O 4 @PC exhibited a nanoparticle morphology with mesoporous structure and BET surface area of 553.3 m 2 ·g −1 . Results showed that the conversion of VAL ( C VAL ) can reach to 96 % with 81 % of VN selectivity ( S VN ) in the presence of Cu 0.4 Co 0.6 Fe 2 O 4 @PC at 80 °C for 40 min. Reusability experiment displayed that the C VAL (89 %) and S VN (79 %) can still achieve 92.3 % and 96.6 % of the initial ones after being used for 3 times. Furthermore, a possible pathway for the oxidation of VAL via·OH and·O 2 - active substances was also proposed. The work presents a supported doping spinel with enhanced VAL oxidation performance, which may be expected to apply in the field of selective catalysis.
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JOURNAL OF MEMBRANE SCIENCE
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2023
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IF 9.5
Mengmeng Lou,Jingzi Li,Xiaowei Zhu,Jingchao Chen,Xingran Zhang,Xiaofeng Fang,Fang Li
Photothermal membrane distillation (PMD) has the potential to address freshwater scarcity, but heat loss during heat transfer from the photothermal surface to the feed bulk inevitably lower the photothermal-vapor conversion efficiency of this process. The permeation of VOCs during PMD also threatens the recycling of distilled water. Herein, a zeolitic imidazolate framework-67 (ZIF-67) wrapped graphene membrane (ZGM) was developed and used for the PMD process. The results demonstrated that the hierarchical porous structure and low heat conductivity of ZIF-67 endowed the ZGM with improved light absorbance and heat localization, thus sustaining a high cross-membrane temperature gradient . Under simulated sunlight illumination, the ZGM attained an additional flux of 0.91 kg m −2 h −1 , corresponding to a photothermal efficiency of 62.1%, which was 183.2% higher than that of the pristine membrane. The temperature change near the photothermal coating was simulated, which showed that ZGM had slower heat conduction into the feed, demonstrating a confined heat effect. Meanwhile, the ZGM exhibited a good interception for phenol when peroxymonosulfate (PMS) was added to the hot feed. The distilled phenol concentration was 88.0% lower than that of the PMD without PS. Electron paramagnetic resonance (EPR) and radical quenching experiments verified that singlet oxygen ( 1 O 2 ) was the dominant reactive oxygen species during in-situ phenol degradation. This work provides a new strategy to develop advanced photothermal membranes to simultaneously promote the photothermal performance and VOC interception.
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COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
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2026
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IF 5.4
Rui Qi,Lian Liu,Xinwang Liang,Shan Zhang,Boxia Liu,Chuhan Xing,Zhi Song
The NB-10/PMS system degrades NOR with a degradation efficiency of over 96%. • •O 2 - and 1 O 2 dominate; non-radical pathway plays key role. • SO 4 •− and •OH play a supporting role, assisting in the degradation of NOR • Anti-interference to coexisting ions, efficient in natural water. To address the issues of efficient removal of antibiotic pollutants and the limited activation efficiency of peroxomonosulphate (PMS), this study developed a Ni metal cluster-modified bismuth bromide (Ni/BiOBr) composite catalyst and utilised it to activate PMS for the degradation of norfloxacin (NOR) in water. By regulating the interfacial interactions between the Ni metal clusters and BiOBr, interfacial electron transfer was promoted and the PMS activation efficiency was enhanced. The results indicate that the Ni/BiOBr-PMS system exhibits excellent NOR removal performance, with a NOR degradation rate of up to 96.7% within 60 min. Material characterisation results show that the introduction of Ni clusters provides abundant reactive sites and improves the interfacial electron transfer properties of the composite material. Radical quenching experiments and electron paramagnetic resonance (EPR) analysis indicated that various reactive oxygen species, including SO 4 •- , •OH and 1 O 2 , are generated within the system and collectively participate in the oxidative degradation of NOR. Electrochemical testing further confirmed that Ni/BiOBr possesses good electron transfer capability, which is conducive to the sustained activation of PMS. Furthermore, this catalytic system demonstrates good adaptability under different reaction conditions and in the presence of various co-existing anions, whilst exhibiting good cycling stability. The results indicate that regulating the electron transfer process via the Ni metal cluster/BiOBr interface can effectively enhance PMS activation, providing new insights into the design of metal cluster-based PMS catalytic materials and the treatment of antibiotic-contaminated water. Download: Download high-res image (226KB) Download: Download full-size image
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高影响因子
Small
·
2026
·
IF 11.8
Liang Zhang,Mengxin He,Yao Lu,Shuai Lu,Jianmin Ding,Hong Ji,Jun Kang,CongHui Han,Jun Yan
Obesity-driven lipid accumulation in hepatocellular carcinoma (HCC) establishes a coupled metabolic-immunosuppressive niche that fuels tumor progression and undermines anti-tumor immunity. Through multiplexed immunofluorescence profiling of clinical HCC tissues stratified by visceral adiposity, we explicitly map this lipid-immunosuppressive landscape and demonstrate that fatty acid translocase CD36 overexpression directly correlates with FoxP3 + Treg infiltration and CD8 + T cell exclusion, defining a clinically actionable immunometabolic vulnerability. To therapeutically exploit this vulnerability, we engineer an AI-designed, structure-guided CD36-occluding nanoplatform (LAIBP) with intrinsic ultrasound-responsive sonodynamic capability. Mechanistically, LAIBP selectively blockades CD36-mediated exogenous lipid influx to impose metabolic vulnerability; subsequent ultrasound activation triggers a spatiotemporally controlled oxidative burst, driving disulfidoptosis-like cell death through NADPH depletion, redox imbalance, and cytoskeletal collapse in the lipid-replete tumor microenvironment. Transcriptomic analysis and protein-level validation indicate coordinated metabolic, redox, and immune-associated changes, with G protein-coupled receptor (GPCR)-associated phosphatidylinositol 3-kinase (PI3K)/ serine/threonine-protein kinase (Akt)/ Serine/threonine-protein kinase mTOR signaling and the cystine/glutamate transporter (SLC7A11) - phospholipid hydroperoxide glutathione peroxidase(GPX4) axis emerging as pathways associated with the observed metabolic-redox response. In obesity-associated implanted HCC mouse models, LAIBP combined with ultrasound irradiation suppresses tumor growth, reduces intratumoral lipid accumulation, and is associated with remodeling of the tumor immune microenvironment. Collectively, this work supports a clinically grounded rationale and a nanotherapeutic framework for further immunometabolic investigation in obesity-associated HCC. Conclusion The LAIBP nanoplatform, via the integrated paradigm of “metabolic entry blockade + redox homeostasis disruption + exogenous trigger amplification”, induces metabolic collapse and disulfidoptosis-like damage in HCC cells and is associated with remodeling of the antitumor immune microenvironment. This work supports a candidate sonodynamic, immunometabolism-associated strategy for obesity-associated HCC.
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高影响因子
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
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2023
·Vol. 30
·期 57
·120590-120604
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IF 5.8
Lu Wen,Ren Songyu,Zhang Yanyu,Wen Ximeng,Zhang Zhongguo,Wang Aimin
A comparative study on the mineralization of antibiotic trimethoprim (TMP) in neutral medium was investigated by applying irradiation with five types of ultraviolet lamps. Among these lamps, the whole envelope of one lamp contained ordinary quartz, which could only transmit ultraviolet-C (UVC) light. For the other four lamps, approximately one tenth, a quarter, a half, and full of envelopes were comprised of high-purity synthetic quartz, which can transmit both vacuum ultraviolet (VUV) and UVC light. TMP decay was well fitted to pseudo-first-order reaction kinetics and occurred more quickly as the VUV intensity increased. Poor mineralization was achieved in the absence of VUV light, whereas the mineralization efficiency was also enhanced with increasing VUV intensity. The presence of hydroxyl radicals ( • OH), superoxide radicals (O 2 •− ) and singlet oxygen ( 1 O 2 ) during VUV photolysis of water was confirmed by electron paramagnetic resonance (EPR) analysis. Appropriate radical quenching experiments and fluorescent molecular probe detection provided the evidence that • OH played a significant role in TMP mineralization. Higher VUV intensity favored the generation of H 2 O 2 and • OH. The evolution of NH 4 + and NO 3 − as well as carboxylic acids (formic, acetic, oxalic, and oxamic acids) released in the treated solution were quantified. Ten aromatic intermediates were also identified by UPLC-QTOF-MS. Thereby, a plausible reaction sequence for TMP mineralization in VUV/UVC photolysis was finally proposed. Graphical Abstract
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PubMed
高影响因子
Journal of Water Process Engineering
·
2023
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IF 7
Zimu Xu,Yandan Tang,Shuheng Hu,Yan Lan,Wenhao Xi,Wei Han,Danzhou Wu,Fan Yang,Cheng Cheng
Pathogenic microorganisms in water pose a potentially serious threat to human health. As an advanced oxidation technology, plasma sterilization has been widely used to kill pathogens in water. However, few studies on the effects of various substances in natural water bodies, such as common ions (Ca 2+ , Mg 2+ , Cl − , SO 4 2− , Fe 2+ ), as well as natural organic matter (humic acid, HA) and turbidity (diatomite), on plasma sterilization. This study used a dielectric barrier discharge (DBD) plasma jet to inactivate Staphylococcus aureus ( S. aureus ) in pure water and simulated water containing the above substances. We systematically investigated how experimental parameters and water constituents affected S. aureus inactivation. Results showed that Ca 2+ , Mg 2+ , Cl − , natural organic matter (humic acid, HA), and turbidity (diatomite) inhibited inactivation, while Fe 2+ and SO 4 2− promoted it. Additionally, the MDA content, cell metabolic capacity, and cell integrity of S. aureus in pure water and simulated water system were detected before and after plasma treatment. The results showed that RS produced by plasma attacked the cell membrane of S. aureus , causing a rupture. RS also accelerated oxidative stress and disrupted cell metabolism, ultimately leading to cell death. Long-lived reactive species (RS) in water induced by plasma, such as (H 2 O 2 , NO 3 − , NO 2 − ), had no significant effect in plasma inactivation. The positive role of short-lived reactive species ( O 2 − , 1 O 2 and OH) in the inactivation of S. aureus was verified by ESR and quenching experiments, especially •O 2 − .
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高影响因子
NEW JOURNAL OF CHEMISTRY
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2023
·Vol. 47
·期 46
·21505-21512
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IF 3.3
Yuhao Lu,Tao Wang,Chengshun Tang,Qijian Niu,Tianyan You
Oxytetracycline (OTC) residues in the environment seriously endanger ecosystems and human health. Hence, it is critical to develop a selective and sensitive sensor for trace OTC detection. In this work, a facile and highly selective colorimetric aptasensor was constructed for OTC detection by the surface electrostatic assembly between aptamers and Fe-MOFs. Due to the steric effects and the decrease in the electron transfer rate, the peroxidase-like activity of NH2-MIL-88B was significantly inhibited after the adsorption of aptamers. Furthermore, the selective binding between aptamers and OTC triggered the release of aptamers from the surface of NH2-MIL-88B, which led to the reactivation of peroxidase-like activity. The colorimetric aptasensor exhibited a satisfactory detection range (1.0 × 10−10 M to 3.0 × 10−7 M) and the limit of detection (LOD) was as low as 1.9 × 10−11 M. Additionally, the colorimetric aptasensor was successfully used to detect OTC in real samples. The developed colorimetric aptasensor provided an important reference value for the sensitive detection of other antibiotics in the environment.
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高影响因子
Journal of Environmental Chemical Engineering
·
2023
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IF 7.7
Wenxia Wang,Zhen Li,Han Wang,Hangyu Luo,Zhenbang Meng,Xiaofeng Liu,Lingyu Liu,Weirui Chen,Baosheng Jin,Kai Huang,Ri Chen,Qi He
Dual Z-scheme heterojunction with highly separation efficiency of photoinduced carriers and outstanding redox capability has received considerable attention and hold great promise for environmental remediation. Herein, magnetic dual Z-scheme g-C 3 N 4 /ZnFe 2 O 4 /Ag 2 CO 3 heterojunction was successfully constructed, and applied as a dual-function photocatalyst for tetracycline (TC) degradation and bacterial inactivation. The optimized g-C 3 N 4 /ZnFe 2 O 4 /Ag 2 CO 3 heterojunction exhibited excellent photocatalytic capacity for TC degradation with a rate constant of 0.0154 min −1 , which is 2.73, 3.08, and 2.92 times higher compared to that of the g-C 3 N 4 , ZnFe 2 O 4 , and g-C 3 N 4 /ZnFe 2 O 4 , respectively. Impressively, the g-C 3 N 4 /ZnFe 2 O 4 /Ag 2 CO 3 -1.25 heterojunction displayed satisfying activity within a wider range of pH (3.0–9.0), TC concentration (5–25 mg L −1 ), and with the addition of various anions including Cl - , HCO 3 - , SO 4 2- , and NO 3 - . Meanwhile, 6.5-log of Escherichia coli cells could also be inactivated by g-C 3 N 4 /ZnFe 2 O 4 /Ag 2 CO 3 -1.25 heterojunction under visible light. Mechanism exploration based on trapping experiment, electron paramagnetic resonance (EPR) analysis, and liquid chromatography-mass spectrometer (LC-MS) indicated that the improved photocatalytic performance resulted from the synergetic effect of semiconductors and constructed dual Z-scheme heterojunction, which significantly promotes charge separation rate and endows strong redox capacity. As expected, the toxicity of TC degradation intermediates was reduced according to the Toxicity estimation analysis based on a quantitative structure activity relationships (QSAR) method. Further, the g-C 3 N 4 /ZnFe 2 O 4 /Ag 2 CO 3 heterojunction also demonstrated magnetic separation property and satisfactory photocatalytic stability even after 4 cycles. This work offers a new perspective on constructing novel magnetic dual Z-scheme heterojunction with dual-function photocatalytic properties and is of significance for water remediation.
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高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2023
·
IF 15.1
Rui Liu,Mu-cheng Xu,Jin-yan Yang
Sewage disposal technology in advanced oxidation processes (AOPs) should be enriched for providing more options for practical application. Herein, degradative and mechanistic investigation of heterogeneous V 2 O 3 -activated sodium percarbonate (SPC) process was implemented in the presence of oxalic acid (OA). The experimental results indicated a strong dependency of sulfamethoxazole (SMX) degradation on SPC dosage and a wide adaptability to the ambient pH in V 2 O 3 /SPC/OA system. Efficient removal of SMX in water reached 93.4 % within 10 min at the initial presence of 0.1 g/L V 2 O 3 and 2 mM SPC. Mechanistic experiments revealed that • OH played an indispensable role in SMX degradation, which partially dominated the degradation process and partially was the main precursor of CO 3 •- and O 2 •- . Moreover, except for the single electron transfer from low-valence state of vanadium (V) species to SPC, the intramolecular electron transfer process from –OOH ligand of V complex to hydrogen peroxide (H 2 O 2 ) also participated in the generation of • OH. Additionally, the introduction of OA could provide a complex, transient acidic and reductive condition for facilitating the SMX removal process. On the other hand, the addition of OA restricted the conversion of • OH to CO 3 •- and O 2 •- . Zeolite was employed to absorb the V species in the aqueous solution after the reaction and the residual vanadium concentrations were <2 mg/L. The existence of HPO 4 2- , CO 3 2– and humic acid exerted severe inhibition on the decontamination of SMX, and F - and NO 3 – exerted slight suppression, whereas the existence of Cl - and SO 4 2- did not show conspicuous impairment. This work filled the gap of decontamination performance of SMX in vanadium based heterogenous SPC system and deepened the understanding of the application of reductant.
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高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2023
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IF 5.2
Yu Wang,Fengwen Yan,Jie Wu,Zhijun Huang,Liuting Song,Shunda Yuan
The utilization efficiency of single atoms is limited by the active sites being buried in support. To maximize atom utilization, Cu single atoms are anchored on the external surface of g-C 3 N 4 nanofibers (CNNFs), which are fabricated by partial thermal decomposition and subsequent self-assembly in H 2 O. The abundant N and O-containing functional groups of CNNFs are vital for the loading of Cu. Benefited from the full utilization of Cu sites, CNNF-Cu exhibits excellent Fenton-like catalytic activity for Methylene Blue degradation. The reaction kinetic constant is more than 10 times higher than that of the traditional single-atom catalyst with Cu sites evenly distributed throughout the entire support. CNNF-Cu maintains most of its catalytic activity after five cycle tests, suggesting good stability. This work provides a convenient method to maximize the utilization of single metal atoms for catalytic applications.
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