JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS
·
2025
·
IF 4.9
Zhaoxia Wen,Yangang Sun,Yu Zhang,Luyao Pan,Song Yao
Rational design of efficient visible-light-responsive photocatalysts is pivotal for antibiotic degradation in aquatic environments. In this work, calcium-doped BiOBr (BOB) nanocomposites with controlled doping ratios were synthesized via a hydrothermal-calcination method and evaluated for ciprofloxacin (CIP) degradation under visible light. Experimental results demonstrate that the BiOBr/Ca-3 (BOB/Ca-3) sample exhibits a 1.64 times enhancement in CIP degradation efficiency compared to pristine BOB. Characterization data revealed that Ca doping optimizes the electronic and structural properties of BOB. Radical trapping experiments confirmed that •O 2 − and h + serve as the dominant reactive species. Cycling tests demonstrated the structural stability and recyclability of BOB/Ca-3. This study demonstrates that Ca-doped BOB modification proves to be an effective strategy for developing high-performance photocatalysts toward antibiotic-contaminated wastewater remediation.
✓ 已验证
产品关联
DOI
高影响因子
Research
·
2026
·
IF 10.7
Chen Ling,Xiaohan Chen,Jing Yang,Xinhua Zhan,Jason C. White,Melanie Kah,Yu Shen,Baoshan Xing
Biological stress responses operate across multiple scales, yet the coordination mechanisms remain poorly characterized. Here, we present comprehensive systems-level characterization of coordinated plant and endophytic microbiome responses during xenobiotic stress, integrating ultrastructural analysis, proteomics, and microbiome profiling in rice seedlings exposed to ciprofloxacin. We discovered a sophisticated multi-level defense system with chloroplasts as a key hub within a highly integrated cross-organellar network, comprising 36% of all differentially expressed proteins. The system operates through 3 integrated mechanisms: (a) differential cellular accumulation patterns showing 14-fold tissue-specific differences, (b) reactive-oxygen-species-associated metabolic processes with reduced toxicity of transformation products, and (c) restructuring of endophytic bacterial communities toward stress-resistant genera. This work indicates that biological systems deploy hierarchical, integrated responses spanning from organellar to ecosystem levels. The chloroplast-centered response represents a comprehensive characterization of multicompartmental responses with implications across multiple biological fields. Our findings illustrate how multidisciplinary systems approaches can uncover emergent properties of multiscale biological responses invisible to single-scale analyses, providing a framework for investigating multiscale responses across diverse biological systems.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Environmental Technology & Innovation
·
2023
·
IF 7.1
Xinyue Li,Tonglinxi Liu,Xing Han,Yilin Li,Xiulan Ma
In this paper, peanut shells were used as the raw material for preparing biochar (PBC), and artificial simulated aging was used to age the PBC. To investigate the effectiveness of biochar before and after aging for the removal of Pb and ciprofloxacin (CIP) alone and the feasibility of simultaneous removal of Pb and CIP. The effects of different aging methods on the physicochemical properties of biochar were investigated by measuring the specific surface area (BET), scanning electron microscopy (SEM), X-ray diffraction (XRD) and Fourier transform infrared absorption spectrometry (FTIR) of biochar. The results showed that the C content of biochar decreased after aging, while the O/C, H/C, (N+O)/C, and O contents increased. Kinetic adsorption, adsorption isothermal and competitive adsorption experiments were performed to study the adsorption properties of CIP and Pb 2 + by aging biochar under single and combined pollution systems. Aging inhibited the adsorption of ciprofloxacin on biochar, and the inhibition size was ranked as high-temperature aging > freeze-thaw cycles aging > natural aging. However, the effect of aging on the adsorption of Pb 2 + by biochar was insignificant. Pb 2 + in the complex contamination system would compete with CIP for oxygen-containing functional groups and adsorption sites on biochar, indicating that the pollutant adsorption mechanism by biochar is complex and influenced by various factors such as aging methods and pollutant species. This study shows that regional climatic factors and target pollutant species must be considered when applying biochar for pollutant removal , which may affect the long-term effects of pollution remediation.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF MOLECULAR STRUCTURE
·
2023
·
IF 3.8
Hao Zhang,Pengfei Zhang,Zhiliang Liu,Chunfang Du
In this study, various silver phosphomolybdates ( x - y - z -AgPMo) with oxygen vacancies were successfully prepared through H 2 calcination and subsequent chemical precipitation and used for the adsorption of ciprofloxacin (CIP) in water. The microstructures of x - y - z -AgPMo were analyzed by a series of characterization methods. The effects of calcination time, calcination temperature, hydrogen flow rate, and external adsorption conditions on the adsorption performance were investigated. The results showed that the adsorption performance of 1–0.1–250-AgPMo toward CIP could reach 91% within 20 min with a maximum adsorption capacity of 45.5 mg∙ g − 1 , which was about 1.7 times as that of silver phosphomolybdate (Y-AgPMo) without H 2 calcination. The improved adsorption performance of 1–0.1–250-AgPMo was mainly attributed to the presence of oxygen vacancies, which induced more negative surface charges and larger specific surface area in 1–0.1–250-AgPMo. This work provided an excellent adsorbent for CIP removal and forcefully confirmed the important role of oxygen vacancies in the adsorption process.
✓ 已验证
产品关联
DOI
高影响因子
Frontiers in Bioengineering and Biotechnology
·
2023
·
IF 5.7
Fang-Lan Geng,Hai-Yuan Chi,Hua-Chao Zhao,Jin-Quan Wan,Jian Sun
Fe-based metal-organic frameworks (MOFs) show high activity toward the activation of peroxodisulfate (PDS) for the removal of organic micropollutants (OMPs) in wastewater treatment. However, there is a phenomenon of Fe ion dissolution in the Fe-based MOFs’ active PDS system, and the reasons and influencing factors that cause Fe ion dissolution are poorly understood. In this study, we synthesized four types of Fe-based MOFs and confirmed their crystal structure through characterization. All types of Fe-based MOFs were found to activate PDS and form sulfate radicals (SO 4 − ), which effectively remove OMPs in wastewater. During the process of Fe-based MOFs activating PDS for CIP removal, activated species, oxidant reagent, and pH negatively impact the stability performance of the MOFs’ structure. The coordination bond between Fe atom and O atom can be attacked by water molecules, free radicals, and H + , causing damage to the crystal structure of MOFs. Additionally, Fe (II)-MOFs exhibit the best stability performance, due to the enhanced bond energy of the coordination bond in MOFs by the F ligands. This study summarizes the influencing factors of Fe-based MOFs’ damage during PDS activation processes, providing new insights for the future development of Fe-based MOFs.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2022
·
IF 9.136
Weijie Hua,Yong Kang,Shuai Liu
A novel method of water surface plasma (WSP) combined with peroxymonosulfate (PMS) was developed for synergistic degradation of aqueous ciprofloxacin hydrochloride (CIP). The synergistic effect between WSP and PMS was demonstrated with the synergistic factor of 3.224. The CIP removal efficiency of the synergistic system was up to 96.6 % after 30 min of treatment, corresponding to the kinetic constant of 0.113 min −1 . The degradation performance experiments revealed that the PMS dosage of 6.4 mM, air flow rate of 0 L/min, peak voltage of 23 kV, initial pH and initial CIP concentration of acidic and 20 mg/L, respectively, were favorable for CIP removal. The combined system could maintain high removal efficiency (93.9 %) for the treatment of wastewater with high initial conductivity (950 μS/cm). OH, SO 4 − , O 3 , O 2 − and high-energy electrons were the active species responsible for CIP degradation, among which OH was the main active factor. UV–vis spectra and three-dimensional fluorescence spectra demonstrated the efficient removal of CIP. Possible degradation pathways and synergistic degradation mechanism were summarized. PMS was probably activated by O 3 , ultraviolet light and high-energy electrons generated in WSP. The presence of Cl − , SO 4 2− and HCO 3 − had a certain negative effect on CIP degradation in the WSP + PMS system, while HA had little effect on the final removal of CIP. The WSP + PMS degradation method has the advantages of high efficiency, high rate and low energy consumption compared with the previous literatures.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF NANOBIOTECHNOLOGY
·
2022
·Vol. 20
·期 1
·1-16
·
IF 9.429
Liu Qiqi,Zhang Ying,Huang Jingkai,Xu Zhourui,Li Xiang,Yang Jingyu,Huang Haoqiang,Tang Shiqi,Chai Yujuan,Lin Jinbo,Yang Chengbin,Liu Jia,Lin Suxia
The colonization of bacterial pathogens is a major concern in wound infection and becoming a public health issue. Herein, a core–shell structured Ag@MSN (silver core embedded with mesoporous silica, AM)-based nanoplatform was elaborately fabricated to co-load ciprofloxacin (CFL) and tumor necrosis factor-α (TNF-α) small interfering RNA (siTNF-α) (AMPC@siTNF-α) for treating the bacterial-infected wound. The growth of bacterial pathogens was mostly inhibited by released silver ions (Ag + ) and CFL from AMPC@siTNF-α. Meanwhile, the loaded siTNF-α was internalized by macrophage cells, which silenced the expression of TNF-α (a pro-inflammatory cytokine) in macrophage cells and accelerated the wound healing process by reducing inflammation response. In the in vivo wound model, the Escherichia coli (E. coli) -infected wound in mice almost completely disappeared after treatment with AMPC@siTNF-α, and no suppuration symptom was observed during the course of the treatment. Importantly, this nanoplatform had negligible side effects both in vitro and in vivo. Taken together, this study strongly demonstrates the promising potential of AMPC@siTNF-α as a synergistic therapeutic agent for clinical wound infections. Graphical Abstract
✓ 已验证
DOI
PubMed
高影响因子
Separation Science Plus
·
2022
·Vol. 5
·期 8
·337-348
·
IF 0
Shu Zhou,Jinli Fu,Pengfei Zhao,Sisi Tang,Xiaodan Wu,Zhaoxia Yang,Zhaohui Zhang
The development of a simple and rapid separation and analysis method with high selectivity toward ciprofloxacin is of great importance for environmental protection. Herein, this paper reported a hollow magnetic zeolitic imidazolate framework-67 based molecularly imprinted polymer for selective adsorption and enrichment of ciprofloxacin. The morphology and structural properties of the hollow magnetic molecularly imprinted polymer were characterized by scanning electron microscopy, transmission electron microscopy, infrared spectroscopy, and thermogravimetry, and the results showed that the material has an obvious hollow structure, good thermal stability, and magnetic properties. The hollow magnetic imprinted polymer has a higher adsorption capacity (75.59 mg/g) and shorter adsorption saturation time (50 min) toward ciprofloxacin. Moreover, the hollow magnetic molecularly imprinted polymer showed excellent adsorption ability, stability, and repeatability. The hollow magnetic imprinted polymer was used to detect trace ciprofloxacin in actual samples (river water, human urine, chicken) successfully with the recoveries of 91.4–100.4%. With the advantages of high recovery (91.4–100.4%), high speed (50 min), and high selectivity (selectivity factor > 2.50), the hollow magnetic molecularly imprinted polymer has broad application prospects in the efficient adsorption of ciprofloxacin.
✓ 已验证
产品关联
DOI
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2022
·
IF 9.965
Chang Ping Yang,Cong Yi Hu,Zhong Wei Jiang,Si Yu Xiao,Xiao Yan Wang,Cheng Zhi Huang,Yuan Fang Li,Shu Jun Zhen
The slow conversion of Fe(Ⅱ)/Fe(III) cycle was largely limited the degradation efficiency of many photo-Fenton systems. Herein, four Fe-MOFs nanorods (namely Fe-TCPP-1, Fe-TCPP-2, Fe-TCPP-3, Fe-TCPP-4) with decreasing length-diameter ratios were synthesized in a household microwave oven, using photosensitizer porphyrin and iron ions with Fenton activity as building blocks. Among them, the Fe-TCPP-3 exhibited high photogenerated electron-hole ( e − - h + ) separation efficiency and largest pore structure , endowing Fe-TCPP-3 with superior photo-Fenton property. In addition, Fe-TCPP-3 based photo-Fenton system was applied to efficiently degrade antibiotic ciprofloxacin (CIP) under neutral condition, due to the continuously generated reactive species ( h + , e − , OH · , O 2 ·– , 1 O 2 ) in Fe-TCPP-3 under visible-light irradiation. With irradiation for 30 min, the degradation efficiency of the system could reach about 73 %, which was about 26-fold towards the system without light irradiation . This study paved a way to modulating the photo-Fenton activity of MOF-based catalysts.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CHEMOSPHERE
·
2022
·
IF 8.943
Yuan Chi,Peng Wang,Mei Lin,Cong Lin,Min Gao,Chunlin Zhao,Xiao Wu
Ciprofloxacin (CIP) as an anti-inflammatory drug is frequently detected in various water resources. Recently, Sulfate Radical-based advanced oxidation processes with manganese oxides have been recognized as a highly effective method for CIP degradation. Herein, ε-MnO 2 was obtained through a convenient drying process. After different atmospheric treatments, MnO and Mn 2 O 3 were fabricated for subsequent degradation experiments. The results show that MnO exhibits better catalytic activity than Mn 2 O 3 , with high removal efficiency of almost 84.3% for CIP. Quenching test and electron paramagnetic resonance spectra confirm that 1 O 2 is the dominant species during reaction, while ·OH and SO 4 ·- play a supporting role. A related discussion about the role of valence states of Mn and oxygen vacancies is presented, which can provide a theoretical basis for further development of Mn/peroxymonosulfate system.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Journal of Cleaner Production
·
2023
·
IF 11.1
Shuqiang Pang,Chengfeng Zhou,Yuanyuan Sun,Kewei Zhang,Wanneng Ye,Xiaoliang Zhao,Liping Cai,Bin Hui
Structural design of high-performing catalysts for boosting refractory organic pollutants degradation remains a great challenge. Herein, a natural wood-derived catalyst comprising of wood carbon and Fe/Co sites was proposed as the peroxymonosulfate (PMS) activator to enhance ciprofloxacin (CIP) pollutant degradation. The bimetallic Fe/Co sites were highly dispersed and stabilized on carbon surface. The carbon-based catalyst achieved 100% removal rate for CIP within 4 min. After four consecutive cycles, the removal rate still reached 92.8%, displaying separable and reusable ability of this catalyst. The carbon-based catalyst could also exhibit excellent degradation performance under a wide pH range of 2.0–8.0. Density functional theory (DFT) calculation revealed that Fe/Co sites at wood carbon had the high adsorption energy and induced interfacial electron transfer for enhanced breakage of O–O bond. The sulfate radical (SO 4 •− ), hydroxyl radical (•OH) and singlet oxygen ( 1 O 2 ) were main reactive oxygen species and their relative contribution was calculated to be 13.51%, 17.54% and 68.95%, respectively. The formed by-products and intermediates had almost no toxicity. This work proposes a new structural design of wood carbon-based system for enhancing antibiotic pollutant in aqueous environment, which facilitates the development of wastewater treatment technology.
✓ 已验证
产品关联
DOI
高影响因子
Surfaces and Interfaces
·
2023
·
IF 6.2
Yue Shen,Haoyang Xu,Yage Zheng,Yao Wang,Liang Zhang,Zhiqiang Zhang,Lvling Zhong,Zhixian He
The development of a low-cost and recyclable method for wastewater treatment has been a major challenge. Polyvinylidene fluoride (PVDF) membranes have received considerable attention owing to their excellent mechanical strength , unique antioxidant properties, and low cost. In this study, Bi/BiOCOOH/PVDF composite membrane materials were prepared using a simple two-step solvent thermal method and phase conversion method. The results showed that under the synergistic action of adsorption and photocatalysis , the photocatalytic degradation efficiency of Bi/BiOCOOH composite material and Bi/BiOCOOH/PVDF composite membrane material for ciprofloxacin (CIP) was much higher than that of BiOCOOH. The introduction of PVDF acted as a carrier, improved the adsorption of the catalytic material to CIP, and facilitated the effective collision of the photocatalytic active site and CIP. The experimental results and theoretical calculations confirmed that the combination of Bi and BiOCOOH effectively improved the light absorption capacity and photocatalytic performance. The reproducibility test revealed that the small amount of new composite catalyst for Bi/BiOCOOH/PVDF as a carrier was lost and that the Bi/BiOCOOH/PVDF catalyst still had high catalytic activity. In addition, the influence of water matrix factors, such as pH and anion, on the photocatalytic degradation experiment was investigated, which would provide some reference for the actual wastewater treatment of the composite catalyst. This study demonstrates a photocatalytic activation mechanism between metals and semiconductors and provides some basis for constructing catalysts for the synergistic and effective treatment of water pollution through a combined adsorption and photocatalysis process.
✓ 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）