筛选条件 :
环境科学与工程学院
Na Li; Chen Wang; Wei Gao; Wenli Li; Binrong Li; Xuedong Wang
Separation and Purification Technology,
2025
356
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EI
SCIE
摘要 : An acid gas-induced strategy was proposed to fabricate a series of PCNs with dual-defects and surface hydroxyl group (DDH-PCNs) for photocatalytic H 2 O 2 generation and trace organic contaminants (TrOCs) degradation. The Nv can accelerate the O 2 adsorption and activation by formation a bridge C−O−O−C model. Accompanied cyano groups provide the asymmetric electron distribution for carriers' separation. Moreover, the surficial hydroxyl groups provide more protons for photocatalytic H 2 O 2 production. As a result, the DDH-PCNs showed an excellent photocatalytic H 2 O 2 rate of 5554.6 μmol g −1 h −1 under full spectrum irradiation, and it can also degrade SMX (100 μg/L) completely in 5 min. Notably, the optimal DDH-PCN(1.6) can simultaneously achieve photocatalytic H 2 O 2 production and SMX degradation in a wastewater/alcohol system. The rapid formation of the intermediate superoxide radical (2.44 min −1 ) is the key to above dual functions. Our findings provide profound insights into ·O 2 − manipulation and development of dual functional photocatalytic system towards environmental application.
Wentao Zhang; Degui Gao; Yue Zhao; Zhifeng Li; Wenguang Huang; Tianyin Huang
Next Materials,
2025
7
摘要 : Two-dimensional transition metal dichalcogenides (TMDs) has a broad application prospect in photocatalytic removal of harmful gases, but it is limited by the slow carrier separation efficiency. In order to improve the slow carrier dynamics, loading the TMDs with trace precious metals is an effective strategy. Thanks to the presence of precious metals, the recombination of electron and hole is inhibited. In this paper, the photocatalytic removal potential of single atom Pt supported by TMDs for harmful gases was discussed. Specifically, using density functional theory, it was found that Pt@2H-MoS 2 and Pt@2H-MoSe 2 possessed moderate bandgap widths, excellent stability and light absorption ability. Using CO, NO, SO and SO 2 as model harmful gases, it was proved that Pt@2H-MoS 2 and Pt@2H-MoSe 2 can realize the photocatalytic removal of harmful gases by charge transfer and molecular orbital hybridization analysis. The above calculations exhibit that Pt@2H-MoS 2 and Pt@2H-MoSe 2 photocatalysts with excellent activity and stability possess broad prospects for the removal of harmful gases.
Weikang Ling; Jiliang Ma; Weikun Jiang; Huanqiu Wei; Yuchen Ren; Min Hong
Journal of Colloid and Interface Science,
2025
682
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EI
SCIE
摘要 : The construction of p-n heterojunction is considered a prominent method for promoting efficient separation/migration of photoinduced carriers, thereby enhancing photocatalytic performance. Herein, a series of nanoflower spherical Co(OH) 2 @CN-x p-n heterojunction photocatalysts were fabricated using a simplified one-step hydrothermal strategy. Notably, Co(OH) 2 @CN-2 exhibited optimal performance, showcasing a carbon monoxide (CO) evolution rate of 46.2 μmol g −1 h −1 and a xylonic acid yield of 69.9 %. These values are 14.7/3.7 and 2.8/2.4 times higher than those of pristine CN and Co(OH) 2, respectively. Additionally, Co(OH) 2 @CN-2 demonstrated excellent recyclability and chemical stability. Comparative experiments, coupled with 13 CO 2 -labelling testing, confirmed the carbon sources of the obtained CO (72.3 % from CO 2 reduction and 27.7 % from xylose oxidation). The charge transfer mechanism in Co(OH) 2 @CN-x p-n heterojunctions was systematically elucidated using in-situ X-ray photoelectron spectroscopy ( in-situ XPS) and density functional theory (DFT) calculations. This work presents a practical approach for constructing p-n heterojunction photocatalysts to enhance photocatalytic biomass oxidation coupled with CO 2 reduction.
Ming Gao; Chang Bian; Junxia Wang; Yu Liu; Zhenghao Li; Yutao Zhao
Food Chemistry,
2025
468
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EI
SCIE
摘要 : Herein, a "lab-on-an-AIE@Ln/ICP" sensor array was constructed by employing aggregation-induced emission carbon quantum dots (AIE-CQDs) as the guest and Eu/GMP ICP as the host. Based on the antenna effect (AE) and reductive photo-induced electron transfer (r-PET) between CQDs@Eu/GMP ICPs and tetracyclines (TCs), the as-constructed sensor produced satisfactorily dual-emitting fluorescence. By combining pH regulation with principal component analysis (PCA), the underlying fingerprinting patterns realized the specific identification and quantitation of six TCs in animal farm wastewater, milks and milk-derivative products. Through the aggregation-induced quenching of CQDs@Eu/GMP ICPs on test strips, the discernible fluorescence alterations were successfully utilized for developing smartphone-based visual assay. To sum up, the prominent novelty of this study lies in that based on the comprehensive principles of AE and r-PET along with combination of pH-adjustment and PCA, the pioneered sensor assay achieves specifically identifying and sensing individual TCs for their rapid and on-site detection in animal-derived matrices.
Yawei Wang; Xinying Xie; Xiaofei Wang; Chaoyi Wang; Ming Gao; Feiyue Qian
Spectrochimica Acta - Part A: Molecular and Biomolecular Spectroscopy,
2025
329
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EI
SCIE
摘要 : The trace-level detection of tetracyclines (TCs) in food products is essential to ensure food safety and public health. Herein, we prepared the methionine-doped carbon quantum dots (Met-CQDs) using citric acid as the precursor. Met-CQDs exhibited a Gaussian unimodal peak centered at 440 nm in the fluorescent excitation spectrum, along with a remarkable greenish-blue emission and a fluorescent quantum yield of 33.5 %. Furthermore, the presence of TC (the quencher) caused a rapid quenching of the fluorescence of Met-CQDs, accompanying with a color transition from light blue to dark bule as TC concentrations increased. The coloring variation was also detected by the images captured by smartphones and RGB analysis software, facilitating portable detection of TC utilizing Met-CQDs as a fluoroprobe. The findings indicate that the Met-CQDs based fluoroprobe exhibits high selectivity, rapid response (only ∼1 min) according to an "ON-OFF" sensing model. This fluorescence sensing method gave a low detection limit (LOD) of 0.032 μM and excellent linearity for TC in the concentration range of 0.1–500 μM. Also, the smartphone-based fluorescence-visualizing approach displayed good linearity with a LOD of 0.33 μM. The interactions between this fluoroprobe and TC occurred by virtue of both inner filter effect (IFE) and static-quenching principle. The average recovery for TC in the milk, honey, and tap water samples was determined to be 98.46 ± 1.71 % by a fluorometric method. Overall, both fluorometric and RGB approaches demonstrate strong correlation with conventional LC-MS/MS, and thus the as-fabricated Met-CQDs are promising for the preliminary screening of TCs' residues in food products.
Yu Feng; Xingyu Zhang; Caiwei Zhang; Haozhe Xu; Xiaoming Ji; Jianfang Wang
Bioresource Technology,
2025
419
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EI
SCIE
摘要 : In this study, waste iron scraps (WIS) were exerted to alleviate sulfide inhibition on anammox bacteria and promote anammox nitrogen removal from sulfide-containing wastewater. Short-term batch experiments showed that WIS-addition led to the anammox bacteria activity increasing by 124.8 % at an initial sulfide concentration of 40 mgS/L. During the long-term experiments, the nitrogen removal rate (NRR) reached to 8.76 kg/(m 3 ·d) in the WIS-added reactor, while the maximum NRR was only 3.77 ± 0.31 kg/(m 3 ·d) in the non-WIS reactor. In contrast to anammox bacteria development in the non-WIS reactor, the relative abundance of Candidatus Kuenenia (1.4–3.7 %) declined significantly in the WIS-added reactor, but novel potential anammox bacteria Brocadiaceae_unclassified (60.1 %-78.6 %) were highly enriched. Overall, the experimental evidence suggested that WIS-addition not only mitigated the sulfide inhibition on anammox bacteria, but also promoted novel anammox bacteria proliferation. The findings of this work provide a promising solution for wide engineering applications of anammox treating sulfide-containing wastewater.
Degui Gao; Wentao Zhang; Hao Dong; Yifan Yu; Wei Liu; Hang Luo
Environmental Technology and Innovation,
2025
37
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EI
SCIE
摘要 : Phosphorus (P) is an essential macronutrient for organism growth, but human activities in industry, agriculture, and daily life have significantly disrupted its natural cycle. The excessive discharge of P into water bodies leads to eutrophication, endangering aquatic ecosystems. Recycling and reusing P, while improving its utilization efficiency, are critical for addressing this issue. Layered double hydroxides (LDHs), as tunable layered inorganic materials with large specific surface areas and high porosity, show great promise for wastewater treatment. This paper evaluates the potential of LDHs for P removal and recovery, examining key adsorption mechanisms—ion exchange, electrostatic attraction, complexation, and intermolecular forces, and factors such as initial P concentration, pH, temperature (T), and coexisting ions. Initial P concentration is the most influential factor, with higher T enhancing adsorption and increased pH inhibiting it. Coexisting ions, despite competitive effects, generally promote adsorption. Challenges, including high production costs, limited selectivity, mechanical instability, and potential biotoxicity, are discussed alongside strategies to address them, such as cost-effective synthesis, defect engineering, and composite materials. Future research should focus on developing scalable, eco-friendly LDHs with high stability, regeneration capacity, and efficiency in real-world conditions. Addressing these challenges could position LDHs as key materials for sustainable P management and restoration of the natural P cycle.
Wentao Zhang; Daifei Xu; Yue Zhao; Degui Gao; Zhaotian Xie; Xinming Zhang
Bioresource Technology,
2025
418
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EI
SCIE
摘要 : Utilizing microbial fuel cells (MFCs) technology to simultaneously achieve efficient biopower generation and pollutant degradation is a persistent pursuit. However, the limited rate of extracellular electron transfer (EET) and the availability of electrode materials remain key factors limiting the practical application of MFCs. In this article, modified carbon derived from cyanobacteria is applied to modify electrodes and assemble MFCs. By outputting voltage, power density, chemical oxygen demand removal rate and Coulombic efficiency the excellent bioelectricity performance of the assembled MFCs is demonstrated. The degradation performance of the assembled MFCs on various typical pollutants represented by tetracycline is illuminated, even up to 95.12%. Moreover, the pollutant removal mechanism by assembled MFCs is elucidated, including biofilm community and degradation pathway analysis. In a word, the enhanced EET process and high accessibility make the proposed MFC anode have fascinating application prospects in achieving efficient biopower generation and pollutant degradation simultaneously.
Xinyu Lu; Xiaojing Li; Hang Qi; Chongjun Chen; Wei Jin
Bioresource Technology,
2025
418
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EI
SCIE
摘要 : Sediment Microbial Fuel Cell (SMFC) technology is an innovative approach to facilitate the degradation of sedimentary organic matter by electroactive microorganisms, transforming chemical energy into electrical energy and modulating the redox potential at the sediment–water interface, consequently controlling the release of endogenous pollutants. The synergistic effects of various environmental factors and intrinsic conditions can significantly impact SMFC performance. This review provides a comprehensive overview of SMFC development in research and application for water environment treatment and ecological remediation, a perspective rarely explored in previous reviews. It discusses optimization strategies for SMFC implementation, emphasizing advancements in novel or cost-effective electrode materials, the dynamics of microbial communities, and the control of typical pollutants. The review suggests a virtuous cycle path for SMFC development, highlighting future research needs, including integrating cross-disciplinary approaches like artificial intelligence, genomics, and mathematical modeling, to enhance the deployment of SMFC in real-world environmental remediation.
Chengbin Zhang; Huijuan Wang; Yongping Huang; Liangliang Zhang; Yongping Chen
Renewable & Sustainable Energy Reviews,
2025
208
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EI
SCIE
摘要 : The significant increase in the energy consumption of electronic devices has made its efficient thermal management a key breakthrough direction for energy conservation and emission reduction. Immersion cooling technology has the merits of efficient heat transport, low noise, and even thermal control, making it highly promising for the thermal management of high heat flux electronic devices. The current work systematically reviews the research progress on immersion cooling technology in electronic device thermal management, including the properties of immersion coolants, liquid-cooled structures, immersion cooling enhancement, and current engineering applications. This literature review reveals that immersion cooling technology can effectively improve the temperature control level, energy efficiency, stability, and lifespan of electronic devices. However, the high cost, safety hazards, and inherent defects of current immersion coolants restrict their large-scale application. Future research should focus on developing efficient, environmentally friendly, and low-cost alternatives and establishing a unified screening mechanism for immersion coolants. Additionally, the current immersion cooling system design focuses mainly on single/two-phase immersion cooling with relatively simple configurations, and further development is needed in the structural design optimization and inherent heat transfer enhancement mechanism of jet impingement immersion cooling. Moreover, adequate attention should be given to control strategies, safety and reliability evaluation, and long-term maintenance methods for immersion cooling systems, to further promote the commercial application of immersion cooling in electronic device thermal management.