JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2023
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IF 9.9
Lifang Yang,Jiangju Si,Liang Liang,Yunfei Wang,Li Zhu,Zizhong Zhang
Photocatalytic water splitting has been identified as a promising solution to tackle the current environmental and energy crisis in the world. However, the challenge of this green technology is the inefficient separation and utilization of photogenerated electron-hole pairs in photocatalysts. To overcome this challenge in one system, a ternary ZnO/Zn 3 In 2 S 6 /Pt material was prepared as a photocatalyst using a stepwise hydrothermal process and in-situ photoreduction deposition. The integrated S-scheme/Schottky heterojunction in the constructed ZnO/Zn 3 In 2 S 6 /Pt photocatalyst enabled it to exhibit efficient photoexcited charge separation/transfer. The evolved H 2 reached up to 3.5 mmol g -1 h - 1 . Meanwhile, the ternary composite possessed a high cyclic stability against photo-corrosion under irradiation. Practically, the ZnO/Zn 3 In 2 S 6 /Pt photocatalyst also showed great potential for H 2 evolution while simultaneously degrading organic contaminants like bisphenol A. It is hoped in this work that the incorporation of Schottky junctions and S-scheme heterostructures in the construction of photocatalysts would lead to accelerated electron transfer and high photoinduced electron-hole pair separation, respectively, to synergistically enhance the performance of photocatalysts.
研究领域:
材料科学
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环境科学
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能源科学
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产品关联
DOI
PubMed
高影响因子
Environmental Technology & Innovation
·
2024
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IF 6.7
Fenglin Zhang,Jinming Gu,Yibing Wang,Qing Qiu,Yue Yu,Xuejian Sun,Menghan Chang,Dandan Zhou,Hongliang Huo,Kejian Tian
Bisphenol A (BPA) poses multiple risks to human health, and it has become a critical environmental pollution issue. The advantage of bacterial degradation of BPA has become more prominent, and enhancement methods have become increasingly diverse. Using quorum sensing to regulate functional bacteria and genes to enhance the bacterial degradation efficiency of BPA serves as a highly promising new approach. This study investigated the effect of adding exogenous N-hexanoyl-L-homoserine lactone (C6-HSL) on the degradation of BPA by Pseudomonas asiatica P1 (strain P1) and analyzed the regulatory mechanism of the signaling molecules. The results showed that exogenous homoserine lactone signaling molecules (AHLs) could enhance the BPA degradation efficiency of strain P1, with 10 μM C6-HSL demonstrating the most significant enhancement, increasing the degradation rate by 12.4 % compared with the control group and producing products such as benzoic acid and succinic acid. In terms of the regulatory mechanism, C6-HSL preferentially induced a 5.18-fold upregulation in the expression of the AHL receptor-encoding gene LasR. Subsequently, LasR regulates the upregulation of hub genes such as bvgS and aruS , ultimately achieving an upregulation of BPA degradation genes through hierarchical regulation. This led to an enhancement in the initial degradation step of BPA and the activation of the benzoic acid degradation pathway. This study analyzed the potential of C6-HSL to enhance microbial BPA degradation and, for the first time, clarified the mechanism by which C6-HSL enhanced bacterial BPA degradation efficiency through hierarchical regulation.
研究领域:
环境生物学
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微生物学
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产品关联
DOI
高影响因子
Molecular Catalysis
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2025
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IF 4.9
Xinping Wu,Mengting Liu,Hongyao Zhao,Danhong Shang,Yanyun Wang,Feng Zeng,Jialing Shen,Jianming Pan,Xiang Liu,Yiyan Song,Fu Yang
Widespread industrial application of bisphenol A (BPA) has produced large amounts of contaminated wastewater, and its accumulation in the environment has threatened human health. In this study, MnOOH nanorods were deposited with the polydopamine layer containing incorporated Co precursor, which was derived to obtain carbon shell confined Co 3 O 4 onto Mn 2 O 3 nanorods. The controlled calcination temperature was optimized to improve the active state of metal species. Carbon shells mediate the electronic interactions between Co 3 O 4 and Mn 2 O 3 , triggering more Co(II/III) redox cycles and an enhanced fraction of Mn(III) along with more oxygen vacancies in Mn 2 O 3 . In addition, more pyridinic N species were generated in the carbon shell of Mn@C/Co-600, affording better affinity to the polar contaminants and peroxymonosulfate (PMS). Therefore, these characters in Mn@C/Co-600 caused the accelerated reaction cycles in the PMS activation and BPA degradation. Compared with other catalysts, Mn@C/Co-600 showed the highest degradation efficiency of bisphenol A (BPA) with the rate constant of 0.827 min −1 , which was up to 30 times higher than that of Mn@C/Co-Cl-600 (0.027 min −1 ). The anions interference effect on BPA degradation follows the order of Cl − (0.925 min −1 )
研究领域:
环境科学
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材料科学
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产品关联
DOI
高影响因子
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
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2023
·Vol. 30
·期 24
·66303-66313
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IF 5.8
Xu Zhimin,Ju Shaohua,Gao Peng,Lin Junjian,Niu Yifan,Meng Fei,Li Shunling,Li Fangfang,Du Jiahao,Xu Li,Peng Hongbo,Pan Bo
In this study, ferrous composites (Fe x O 4 ) were prepared by microreactor to activate peroxydisulfate (PDS) for the degradation of bisphenol A (BPA) with visible (Vis) light irradiation. X-ray diffraction (XRD), energy-dispersive spectrometry (EDS), X-ray photoelectron spectroscopy (XPS), and scanning electron microscope (SEM) were used to characterize the morphology and crystal phase of Fe X O 4 . Photoluminescence (PL) spectroscopy combined with amperometric tests were used to determine the role of PDS on the performance of photocatalytic reaction. The main reactive species and intermediates for BPA removal were determined by electron paramagnetic resonance (EPR) measurement and quenching experiments. The result indicated that singlet state oxygen ( 1 O 2 ) contributed more to the BPA degradation than that of other reactive radicals (·OH, SO 4 ·− and ·O 2 − ); these reactive radicals and 1 O 2 formed by the reaction between photo-generated electrons (e − ) and holes (h + ) of Fe x O 4 and PDS. During this process, the consumption of e − and h + also improved their separation efficiency and thus enhanced the degradation of BPA. In addition, the photocatalytic activity of Fe x O 4 in Vis/Fe x O 4 /PDS system was 3.2-fold and 6.6-fold higher than that of single Fe x O 4 and PDS under Vis light, respectively. The Fe 2+ /Fe 3+ cycle could effectively drive the photocatalytic activation of PDS through indirect electron transfer and the formation of reactive radicals. This work illustrated that the degradation of BPA was rapidly in Vis/Fe x O 4 /PDS system mainly through 1 O 2 , which further improve our understanding on the efficient removal of organic contaminants in the environment.
研究领域:
环境科学
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化学工程
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产品关联
DOI
PubMed
高影响因子
Environmental Science-Nano
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2020
·Vol. 7
·期 8
·2267-2277
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IF 7.683
Qian Zhou,Qingyun Shi,Najun Li,Dongyun Chen,Qingfeng Xu,Hua Li,Jinghui He,Jianmei Lu
Coupling the piezoelectric effect of piezoelectric semiconductors with the photocatalytic technique is considered as a promising strategy for suppressing the recombination of photogenerated charge carriers. A new piezo-photocatalyst, a Rh-doped SrTiO3 inverse opal, was prepared by a hard-template method. Doping of photoactive Rh3+ played a significant role in improving the visible-light response ability and piezo-/photocatalytic activity of SrTiO3. In addition, the introduction of 3D ordered inverse opal structure was favourable for light harvesting. Co-excited by solar energy (visible light) and mechanical energy (ultrasonic vibration), the Rh-doped SrTiO3 inverse opal showed a significantly enhanced degradation rate of bisphenol A, which was 8.9 times higher than that of SrTiO3 nanoparticles under visible light only. The boosted piezo-photocatalytic efficiency was ascribed to the efficient separation of photogenerated electron–hole pairs under the acceleration of the built-in piezoelectric field in the Rh-SrTiO3 inverse opal, as confirmed by piezoelectric force microscopy (PFM). Therefore, this work provided a new insight into SrTiO3-based piezo-photocatalytic materials for efficient environmental remediation.
研究领域:
材料科学
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环境科学
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化学
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DOI
高影响因子
RENEWABLE ENERGY
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2024
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IF 9
Huajing Zhou,Tiancheng Li,Fawen Zhang,Faze Chen,Zilian Liu,Rongrong Miao,Qingqing Guan,Lingxiang Zhao,Liang He
Intrinsic point defects in metal core-shell materials can regulate electron redistribution, thereby reducing catalytic energy barriers and enhancing their ORR activity. However, their specific contributions to electron transfer and mass transport pathways remain unclear. In this study, defect-rich hollow O Co @Co 3 O 4 nanoparticles were successfully synthesized using ZIF-67(Co) as a sacrificial template through controlled annealing and internal electric field substitution reactions. High-resolution electron microscopy analysis and density functional theory (DFT) calculations co-revealed the growth mechanism of Co and O vacancies, as well as antisite defects. The formation of oxygen vacancies significantly lowered the energy barrier for Co vacancy formation, playing a crucial bridging role in the development of antisite defects. The electric field polarization induced by Co-O atomic displacement resulted in asymmetric charge distribution, optimizing the adsorption of active hydrogen (H*) and oxygen atoms and facilitating the generation and release of reactive oxygen species (ROS). Electrocatalytic experiments demonstrated that under the combined action of singlet oxygen ( 1 O 2 ) and H*, bisphenol A (BPA) can be efficiently degraded. This study successfully bridges the knowledge gap between atomic defects and advanced electrocatalysis, providing a new perspective and insight for the in-depth analysis of the structure-performance relationship of electrocatalyst materials in the future.
研究领域:
材料科学
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环境科学
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电催化
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产品关联
DOI
高影响因子
COLLOIDS AND SURFACES B-BIOINTERFACES
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2021
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IF 5.268
Yuhang Yuan,Wenting Cai,Jiaxin Xu,Jianhua Cheng,Ke-Si Du
Copper-based MOF (Cu-PABA) was selected to immobilize laccase (Lac) at optimum pH because of its favorable acid resistance. Cu-PABA@Lac biocomposites were synthesized in situ by the one-step method under moderate conditions (water environment and normal temperature and pressure). Cu-PABA@Lac had great potential to maintain stability due to the protection of the Cu-PABA shell and reasonable conformational changes. In addition, Cu-PABA@Lac could be used repeatedly by centrifugation, as confirmed in the degradation experiment of bisphenol A (BPA). Because of the synergistic effect of copper ions between laccase and Cu-PABA, the K m value decreased (from 0.0024 to 0.0014 mM); therefore, the affinity between laccase and guaiacol was enhanced. In conclusion, the system provides a choice for immobilized acid-resistant enzymes and a solution for environmental BPA degradation.
研究领域:
环境科学
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生物技术
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DOI
高影响因子
JOURNAL OF HAZARDOUS MATERIALS
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2019
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IF 7.65
Rongzheng Zhang,Lei Wang,Juan Han,Jiacong Wu,Chunmei Li,Liang Ni,Yun Wang
Enhancing the catalytic activity and stability of enzymes is of great importance in the development of green chemical and cost-effective application, with removal of bisphenol A (BPA) as a prominent example. Engineering immobilization carriers and immobilization methods of enzymes endows great potential to achieve above goal. Until now, these reports have focused on employing the metal-organic frameworks (MOFs) to increase the stability and reusability of enzymes, an enhancement in its catalytic activity has yet to be addressed. This work introduced a biomimetic mineralization process for facile synthesis of laccase@HKUST-1 biocomposite under mild condition. By exploiting the activity of laccase@HKUST-1, we demonstrated, for the first time, that the integration of laccase and HKUST-1 containing cofactor Cu 2+ ions leaded to 1.5-fold enhancement in the catalytic activity compared with free laccase, which was due to the synergistic enhancement of substrate oxidation. Indeed, the laccase@HKUST-1 biocomposite could function as active biocatalysts under biologically challenging conditions, such as acidic condition, high temperature, organic solvent, and continuous operation. The oxidation of phenols, such as BPA, with laccase@HKUST-1 reached higher catalytic performance than free laccase, and gave 100% degradation efficiency within 4 h. This study provides a feasible method to improve the activity and stability of laccase, which enable completely remove of BPA from the environment.
研究领域:
生物化学
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环境科学
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产品关联
DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
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2021
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IF 13.273
Lu-Lu Zhou,Peng-Xi Liu,Ying Ding,Jia-Rui Xi,Li-Juan Liu,Wei-Kang Wang,Juan Xu
Heterogeneous catalysts with hierarchically porous structure are highly efficient to catalyze chemical reactions. In this work, two-dimensional (2D) nano-flakes assembled flower-like NiO is fabricated and utilized for activating peroxydisulfate (PDS) to degrade organic pollutants bisphenol A (BPA). The results demonstrate that the prepared catalyst exhibits well organized flower structure composed of uniform 2D nano-flakes. PDS combines with the catalyst to form surface-activated NiO-PDS complex, subsequently depriving electrons from BPA. For the optimized NiO-12 catalyst, large specific surface area and hierarchically porous structure benefit to exposes abundant active sites while low resistance promotes electrons transfer, bringing the high BPA degradation rate constant of 0.28 min −1 under the condition of 20 mg/L initial concentration. NiO-12 exerts a capability of catalyzing PDS to mineralize 34% of practical packaging wastewater. This study provides a new strategy to fabricate hierarchical 2D porous catalysts for persulfate activation, with application potential in practical wastewater treatment.
研究领域:
环境科学
·
催化材料
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产品关联
DOI
高影响因子
Journal of Water Process Engineering
·
2018
·
IF 0
Chenlu Ye,Kang Hu,Zhijuan Niu,Yiran Lu,Lin Zhang,Kai Yan
One-step controllable synthesis of rhombohedral α-Fe 2 O 3 photocatalyst has been successfully developed by P123 soft template assisted method. A combination analysis of XRD, BET, SEM and HRTEM has documented that P123 surfactant plays a crucial role in the controllable synthesis of rhombohedral α-Fe 2 O 3 with the exposure of (110) and (012). The as-obtained α-Fe 2 O 3 material is efficient for the photocatalytic degradation of Bisphenol A (BPA). About 91% of BPA (30 mg/L) was degraded by using 1 g/L α-Fe 2 O 3 within 6 h under the simulated sunlight irradiation, which was almost twice higher than that of commercial Fe 2 O 3 . More importantly, reaction intermediates (e.g., 4, 4′-methylenediphenol, phenol and lactic acid) were confirmed by LC–MS/MS analysis, and the rational pathway of BPA degradation was finally proposed.
研究领域:
材料科学
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环境科学
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产品关联
DOI
CHEMOSPHERE
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2020
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IF 5.778
Chu-Ya Wang,Qi Zeng,Guangcan Zhu
Bisphenol A (BPA), a typical endocrine disrupting chemical, is widespread in aqueous environment and cannot be efficiently treated by traditional water treatment technologies . Bismuth oxybromide (BiOBr) is a promising photocatalyst with a special layered structure. However, its band gap (2.8 eV) is not narrow enough for the efficient harvesting of visible light, severely restricting its practical use. Given that the band gap of Bi 2 S 3 is only 1.3 eV, S-doping modification could be used to tailor the band structure of BiOBr. Here, series of S-doped BiOBr nanosheets was prepared through a facile hydrothermal procedure. The as-prepared S 0.2 -BiOBr nanosheets showed a narrower band gap of 2.33 eV. The intrinsic photocatalytic activity of S 0.2 -BiOBr sample for the degradation of BPA was 2.78 times higher than that of BiOBr under visible light degradation. Moreover, the mechanism of BPA degradation over the S-doped BiOBr under visible light irradiation was elucidated based on the experimental results and density functional theoretical calculations. Overall, a feasible and effective doping method was proposed to improve the utilization efficiency of visible light.
研究领域:
环境科学
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材料科学
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化学工程
✓ 已验证
DOI
PubMed
高影响因子
JOURNAL OF HAZARDOUS MATERIALS
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2019
·
IF 7.65
Suding Yan,Xinping Zhang,Hui Zhang
The combination of persulfate (PS) activation by iron ions with electrochemical process (electro/Fe 3+ /PS) is a promising advanced oxidation process. However, almost all these systems were performed in an unbuffered solution and actually under acidic pH condition, with the electricity being frequently supplied by external power. Considering the high buffering capacity of wastewater and energy saving, peroxydisulfate (PDS) activation by Fe(III) species with bioelectricity provided by microbial fuel cell (MFC) for bisphenol A (BPA) oxidation was investigated at fixed near-neutral pH as well as acidic pH. The results indicate that 90.8% of BPA could be removed at pH 2.5. Though the iron existed in the form of precipitate, BPA could still be efficiently removed at pH 6.0. The precipitate formed in the system at pH 6.0 was identified as the amorphous iron oxyhydroxides. Sulfate radicals in the bulk solution and that adsorbed on the precipitate were the dominant reactive species responsible for the oxidation of BPA in the homogeneous and heterogeneous MFC/Fe(III)/PDS processes, respectively. The mechanisms of BPA degradation at both pH values were proposed via EPR and quenching tests as well as XPS analysis. The effects of operating parameters, the mineralization, the mineralization current efficiency and energy consumption were also explored.
研究领域:
环境科学
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化学工程
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）