BIORESOURCE TECHNOLOGY
·
2020
·
IF 7.539
Yanzhuo Zhang,Xuedi Sun,Wei Bian,Jianbiao Peng,Huilin Wan,Jing Zhao
We show that persistent free radicals (PFRs) on the surface of biochar can produce hydroxyl radicals (•OH) by catalyzing H 2 O 2 to facilitate the removal of the combined pollutant BPA-Cr(VI). Microstructure characterization showed that the structures of pyrocarbon and hydrochar were significantly different when prepared at different temperatures. As the preparation temperature and preparation time for biochar increased, the concentration of PFRs first increased and then decreased. When biochar, PFRs, and H 2 O 2 were present in the same solution, the single pollutants BPA and Cr(VI) as well as the combined pollutant BPA-Cr(VI) could be removed effectively, with removal rates greater than 90%. However, when PFRs, BPA, H 2 O 2 , and Cr(VI) were present in the same solution, Cr(VI) competed with H 2 O 2 for electrons and promoted the removal of BPA. The results of this study could be applied to sludge recycling and be used to develop approaches to catalytically degrade combined pollutants.
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 ALLOYS AND COMPOUNDS
·
2021
·
IF 5.316
Shuai Wang,Changhao Yao,Yifeng Cai,Yang Yang,Huiyuan Ma,Baojiang Jiang,Jun Ma
In this study, α-Fe 2 O 3 /rGO was smoothly synthesized by a one-step method and employed to activate persulfate (PS) for the degradation of Bisphenol A (BPA) under sunlight. During the degradation experiment, the degradation rates of BPA for PS, α-Fe 2 O 3 /8% rGO, and α-Fe 2 O 3 /8% rGO/PS were 6.6%, 47.6%, and 99.1%, respectively, indicating that the introduction of α-Fe 2 O 3 /rGO and PS significantly enhanced the photocatalytic efficiency because that photocatalytic process and PS activation coupling system not only inhibited the recombination of photo-induced carrier pairs, but also reduced the energy consumption of PS activation. Moreover, electron spin resonance spectroscopy (ESR) and trapping experiments were utilized to explore the active species generated during the reaction. The results showed that •OH and •SO 4 2- were the principal oxidative species in this reaction system. These results showed that Fe-loaded rGO has great potential for activating PS to decompose pollutants in water.
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
CHEMICAL ENGINEERING JOURNAL
·
2022
·
IF 16.744
Yushan Li,Qingqing Xie,Mengyu Wang,Zhenyang Wang,Jiefeng Liu,Yiyao Du,Dongpei Zhang,Mengyuan Liu,Guangyu Zhang,Xin Jin,Chaohe Yang
Solketal is known as a promising non-BPA plasticizer . However, fast and robust synthesis of solketal from bio-oxygenates remains a grand challenge, as strong surface polarization often deactivates acidic catalysts. We proposed and validated a dual designing strategy, involving (1) Fe 3+ modified Bronsted acidity and (2) chlorotrimethylsilane (CTS) altered hydrophilicity for enhanced activity and stability of NaY catalysts. As one of the key findings, Fe 3+ exchanged NaYs display an unusual shortened Si-OH bond and electronically reconfigured Fe 3+ sites for a 4-fold activity enhancement. Furthermore, CTS modified FeY materials further alleviate surface passivation of glycerol and water, leading to an 18-fold activity improvement and better durability for acetalization of glycerol. CTS modified FeY catalysts display remarkable stability against varies impurity molecules. The dual modification methodology provides useful information on rational design of durable catalysts for synthesis of various other non-BPA derivatives.
研究领域:
催化化学
·
绿色化学
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
·
2019
·
IF 2.931
Sijia Liu,Rongkai Cui,Yibo Ma,Qian Yu,Akash Kannegulla,Bo Wu,Hongtao Fan,Alan X. Wang,Xianming Kong
Flexible plasmonic Surface-enhanced Raman scattering (SERS) substrates were fabricated using cellulose textile fibers, in which the textile fibers were recycled from waste paper in an eco-friendly way. The Glycidyltrimethylammonium chloride (GTAC) with positive charges was grafted onto the surface of the cellulose textile fibers through cationization. Plasmonic silver nanoparticles (Ag NPs) with negative charges were decorated onto the cellulose textile fibers via electrostatic interactions . After cationization, the variation range of the diameter of the cellulose textile fibers was significantly increased because part of the cellulose was dissolved under alkaline condition, leading to more ‘hot spots’ for SERS during the shrinking process. The cellulose textile fiber-Ag NPs nanocomposite was employed for monitoring bisphenol A (BPA) in water and soft drink by SERS and the sensitivity of BPA detection achieved 50 ppb. The recovery values of BPA in soda water samples were from 96% to 105%. These results illustrate that the cellulose textile fiber-Ag NPs nanocomposite can be used as flexible, high sensitivity SERS substrates for detecting harmful ingredients in food or environment.
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
SEPARATION AND PURIFICATION TECHNOLOGY
·
2022
·
IF 9.136
Junhao Li,Jiawei Wang,Xinyu Yuan,Zhikun Wang,Shuangqing Sun,Qiang Lyu,Songqing Hu
At present, endocrine-disrupting chemicals (EDCs) and heavy metals (HMs) are increasingly polluting water. In this work, we prepared a sulfhydryl-rich β-cyclodextrin polymer (SH-CDP) for the adsorption of Pb 2+ and bisphenol A (BPA), as the representatives of HMs and EDCs, respectively. SH-CDP have excellent adsorption performance with theoretical maximum adsorption capacity of 604.65 mg/g and 287.88 mg/g for Pb 2+ and BPA, respectively. The adsorption process of Pb 2+ by SH-CDP reaches equilibrium quickly within 60 s because of chelation between Pb 2+ and sulfhydryl group, suggesting an ultra-fast adsorption rate. Since the adsorption sites of Pb 2+ and BPA by SH-CDP are independent, the adsorption performance is still favorable under the coexistence of Pb 2+ and BPA. Furthermore, SH-CDP maintains stable adsorption performance after five consecutive cycles. These results demonstrate that SH-CDP is a potential material capable of effectively treating HMs and EDCs in wastewater.
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
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
·
2022
·Vol. 30
·期 5
·12813-12824
·
IF 5.19
Cao Ting-Ting,Cui Han,Zhou Dan-Dan,Ren Xin,Cui Chong-Wei
Bisphenol A (BPA) is regarded as a hazardous pollutant that exists widely in aquatic environments, posing a severe threat to human health. In this study, a vacuum ultraviolet (VUV) lamp emitting a hybrid of 254 nm and 185 nm light was used to degrade BPA. Results indicated that photolysis via 254 nm wavelength accounted for 24.93% for BPA decay, while indirect oxidation was responsible for 52.27% of decay. Results confirmed that the degradation of BPA under VUV illumination mainly occurred via photo-excited degradation and ·OH electrophilic addition reactions based on average local ionization energy (ALIE) calculation and density functional theory (DFT) calculations. Therefore, only light with a wavelength of 254 nm was able to induce the first three excited states of BPA, forming the electron transition type of n → π* from O atom to a single benzene ring and π → π* in the single benzene ring. Indirect oxidation by ·OH occurred as it preferentially attacked the C6 atom in BPA ring A. Moreover, the energy required for photo-excited degradation was about twofold than that of ·OH electrophilic addition reactions.
研究领域:
环境科学
·
化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY
·
2021
·
IF 6.291
Yuan Liu,Yaxin Yao,Wenjing Tao,Feng Liu,Songbai Yang,Ayong Zhao,Dan Song,Xiangchen Li
Bisphenol A (BPA) is a widely distributed environmental endocrine disruptor. The accumulation of BPA has been proved that produce various toxic effects both on human and animals. However, the strategies to reduce the damage of BPA on the body and related mechanisms remain to be studied. Coenzyme Q10 (CoQ10), as a powerful antioxidant, is ubiquitous in many eukaryotic cells, which can improve the integrity of lysosomal membrane, lysosomal degradation function and promote autophagy. Here, we examined the ability of CoQ10 to alleviate oxidative stress and apoptosis in BPA-induced damages in C2C12 cells, and how to alleviate it. Our results showed that BPA treatment significantly reduced cell viability, increased the number of cell apoptosis and ROS production, decreased mitochondrial membrane potential, and inhibited the gene expression of mitochondria biogenesis. Moreover, we demonstrated that exposure to BPA increased expression levels of autophagy protein (LC3-II, p62), inhibited autophagy flux, and disrupted the acidic pH environment of lysosomes. Importantly, CoQ10 supplementation effectively restored these abnormalities caused by BPA. CoQ10 significantly decreased the apoptotic incidence and ROS levels, improved mitochondrial membrane potential. Moreover, CoQ10 improved lysosome function and enhanced autophagy flux. Taken together, our results indicate that CoQ10 supplementation is a feasible and effective way to promote the level of autophagy by improving lysosomal function, thereby reducing the apoptosis caused by BPA accumulation. This study aims to provide evidence for the role of CoQ10 in repairing BPA-induced cell damage in clinical practice.
研究领域:
毒理学
·
细胞生物学
·
药理学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Journal of Water Process Engineering
·
2024
·
IF 6.3
Hao Dai,Ying Han,Xiaolong Rong,Haixia Jiang,Lulu Jiang,Yingang Xue,Wenbin Liu
A novel composite material consisting of black phosphorus nanosheets (BPNS) and titanium dioxide (TiO 2 ) for degrading bisphenol A (BPA) under visible light was investigated. Through a series of photocatalytic experiments and characterization techniques, we found that BPNS/TiO 2 composite materials exhibit excellent BPA degradation ability under visible light irradiation , are capable of degrading 85 % of BPA, and can degrade up to 88.72 % of BPA in acidic environments. The synergistic effect of the composite, combined with the advantages of BPNS, increases the light absorption capacity of TiO 2 . The introduction of TiO 2 can reduce the photogenerated electron-hole pair recombination ability of the composite material and improve the carrier migration ability of the composite material, making it an efficient and environmentally friendly catalyst for BPA degradation. We identified and characterized intermediate products of BPA degradation using high-performance liquid chromatography–mass spectrometry (HPLC–MS) and other study. This process elucidates the potential degradation pathways . The results of this study provide strong support for addressing BPA pollution in the environment and offer a new scientific foundation for the application of photocatalysis technology in environmental protection and wastewater treatment .
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
Journal of Food Measurement and Characterization
·
2026
·
IF 3.6
Zhang Xia,Sun Yizhan,Ben Yingying,Liu Ru,Lv Shuwen,Xu Yuandong,Li Peng
An electrochemical molecularly imprinted polymer (MIP) sensor is developed for sensitive detection of bisphenol A (BPA) based on leaf-like Cu 2 S/activated functionalized carbon nanotubes (AFCNTs) nanocomposite as the conductive substrate. The Cu 2 S/AFCNTs composite shows a BET specific surface area of 24.7 m 2 g − 1 , which is approximately eight times higher than that of the pure Cu 2 S (3.3 m 2 g − 1 ). This enlarged surface area contributes to abundant accessible active sites and promotes efficient electron transfer. The electroactive area of the Cu 2 S/AFCNTs-modified electrode is 0.40 cm 2 which is fivefold higher than the bare electrode (0.08 cm 2 ). The MIP film is electropolymerized onto the composite surface with a thickness of 2.91 nm. Mechanistic studies confirm that BPA oxidation is an adsorption-controlled irreversible process involving 2H + /2e − . Under optimized conditions, the sensor displays a broad linear range from 0.9 to 20 µM and a limit of detection of 0.19 µM with high selectivity against common interferents. The sensor also demonstrates good reproducibility (RSD 4.2%) and stability. Practical applicability is validated by determination of BPA in milk samples, with recoveries ranging from 99% to 102.1% (RSD 2.1 ~ 3.7%). This work highlights the synergistic enhancement of Cu 2 S and AFCNTs for constructing high-performance MIP-based electrochemical sensors for food safety monitoring.
✓ 已验证
产品关联
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2026
·
IF 9
Ruifang Qi,Yue Zhao,Jinming Lei,Huixian Jia,Chenghong Feng
Metal-free covalent organic frameworks (COFs) often face a critical trade-off wherein high photocatalytic activity relies on complex, expensive designs while cost-effective alternatives lack efficiency and stability. To address these issues, a nitro-functionalized COF (COF-NO₂) was developed via a one-step condensation method for bisphenol A (BPA) degradation. The –NO₂ groups act as intramolecular electron traps, narrowing the bandgap and boosting charge separation. COF-NO₂ achieved 97.3% BPA degradation within 120 min ( k = 0.031 min −1 ) with over 85% efficiency across five consecutive cycles. Moreover, it exhibited high efficiency across a broad pH range (3−11) and showed broad-spectrum activity toward various bisphenols, including bisphenol S, bisphenol F, bisphenol C, and 4-chlorophenol. Quantitative structure–activity relationship analysis identified HOMO energy as the key descriptor governing degradation kinetics for bisphenols. In pretreated petrochemical wastewater, COF-NO₂ also attained over 75% BPA removal, demonstrating practical potential. This molecular design promoted ·O₂ − generation and selective bond cleavage in BPA, thereby enabling efficient mineralization and a 44% reduction in toxicity. A continuous-flow fluidized bed reactor was designed and achieved 97.4% BPA removal in 180 min through optimized light-flow coupling. Furthermore, low-cost g-C₃N 4 was introduced to integrate with highly active COF-NO₂, forming a composite that reduced material costs by 20% while maintaining over 80% degradation efficiency. This work presents a synergistic strategy combining molecular orbital engineering with heterojunction design, offering a feasible route to cost-effective and scalable metal-free COFs.
✓ 已验证
产品关联
DOI
高影响因子
Environmental Science and Ecotechnology
·
2024
·
IF 14
Honglong Zhang,Qiaoqiao Zhao,Kangbao Zhong,Ruopeng Bai,Jiaojiao Dong,Jun Ma,Jing Zhang,Timothy J. Strathmann
Research efforts on permanganate (Mn(VII)) combined with redox-mediator (RM), have received increasing attention due to their significant performance for bisphenol-A (BPA) removal. However, the mechanisms underpinning BPA degradation remain underexplored. Here we show the overlooked interactions between RM and BPA during permanganate oxidation by introducing an RM—N-hydroxyphthalimide (NHPI). We discovered that the concurrent generation of MnO 2 and phthalimide- N -oxyl (PINO) radical significantly enhances BPA oxidation within the pH range of 5.0–6.0. The detection of radical cross-coupling products between PINO radicals and BPA or its derivatives corroborates the pivotal role of radical cross-coupling in BPA oxidation. Intriguingly, we observed the formation of an NHPI-BPA complex, which undergoes preferential oxidation by Mn(VII), marked by the emergence of an electron-rich domain in NHPI. These findings unveil the underlying mechanisms in the Mn(VII)/RM system and bridge the knowledge gap concerning BPA transformation via complexation. This research paves the way for further exploration into optimizing complexation sites and RM dosage, significantly enhancing the system's efficiency in water treatment applications.
研究领域:
环境科学
·
化学工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Materials Science and Engineering B-Advanced Functional Solid-State Materials
·
2024
·
IF 3.9
Congzhi Hu,Yuye Li,Tingting Du,Youyong Pang,Yongping Liu,Botian Liu,Ling Li,Huidan Lu,Bin Huang
In this paper, a new supramolecular Z-scheme heterojunction photocatalyst, designated as Ag/Ag 3 PO 4 /Perylene diimide organic molecules after secondary acid-base self-assembly (PDI-2), was synthesized through precipitation and photoreduction techniques. Ag/Ag 3 PO 4 /60 %PDI-2 (APP-6) exhibited the best photocatalytic activity due to the synergistic effect of Z-scheme heterojunction and surface plasmon resonance (SPR) effect of Ag nanoparticles (Ag NPs). Under visible light (λ > 420 nm), the degradation efficiency of APP-6 for Rhodamine B (RhB) and Bisphenol A (BPA) was 99.7 % and 90.7 %, respectively. Additionally, PDI-2 was transformed into smaller nanoclusters, which increased the specific surface area of the photocatalyst, and reduced the charge transport distance. Moreover, APP-6 exhibited the smallest electrochemical impedance, the largest photocurrent, the smallest fluorescence lifetime. Free radical trapping experiments showed that •O 2 − was the main reactive group and a possible photocatalytic mechanism was proposed by combining the Ultraviolet–visible diffuse reflectance spectrophotometer (UV–vis DRS) and the Mott-Schottky plots.
研究领域:
材料科学
·
环境科学
✓ 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）