npj Clean Water
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2025
·Vol. 8
·期 1
·1-14
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IF 11.4
Chen Yi,Jin Yue,Zhu Honglin,Zhang Haolan,Wei Luyu,Tang Yan,Wang Rui,Zhou Dayu,Gu Jinchuan
Molybdenum disulfide (MoS 2 ) can be used as a potential photocatalyst for the removal of emerging contaminants (ECs) under visible light (Vis). However, the high carrier recombination rate and aggregation restrict pure MoS 2 application. The hydrothermal method was used to prepare a novel MoS 2 /BaSO 4 /zeolite (Z) composite (MBZ), which was used to activate peroxymonosulfate (PMS) under visible light for sulfadiazine (SDZ) degradation. The MBZ showed a moderate E g value (2.59 eV), indicating good visible-light absorption. The physicochemical and photoelectrochemical properties were analyzed, revealing that the hybrid MBZ significantly enhanced photoinduced carrier generation, separation, and transfer. The MBZ exhibited 2.38-, 3.24-, and 1.36-fold higher SDZ removal reaction rates than Z, BaSO 4 , and MoS 2 in the PMS/Vis system. The addition of EDTA-2Na notably decreased the degradation rate (79.58–89.88%), indicating the significant role of h + . This work provides a new approach to the design of semiconductor/insulator photocatalysts and constructs a promising catalytic oxidation system for the green remediation of EC wastewater.
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JOURNAL OF HAZARDOUS MATERIALS
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2024
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IF 12.2
Ran Li,Zhidong Wei,Peng Li,Yangbo Qiu,Chengyi Wang,Chao Wang,Long-Fei Ren,Jiahui Shao,Yiliang He
Emerging contaminants (ECs) in secondary effluent of wastewater treatment plants (WWTPs) have received increasing attention due to their adverse effects on aquatic ecosystems and human health. Herein, visible-light responsive photocatalyst TM (TiO 2 @NH 2 -MIL-101(Fe)) and resultant photocatalytic ultrafiltration (PUF, PVDF/TM) membrane were prepared to remove 32 typical compounds of antibiotics, 296 compounds of antibiotic resistance genes (ARGs), and their corresponding bacterial hosts. The construction of heterojunction photocatalyst promoted the electron transfer from NH 2 -MIL-101(Fe) to TiO 2 and the formation of N-TiO 2 , enhancing visible-light (λ ≥ 420 nm) photocatalytic activity. With highly-hydrophilic surface and delicately-regulated pore structure, the initial water permeance of optimal PUF membrane significantly increased to 3912.2 L/m 2 /h at 1.0 bar. Meanwhile, membrane retention (via adsorption, electrostatic interaction, and steric hindrance) was improved due to the narrowed pore size, highly-negative surface charge and abundant functional groups. Additionally, hydroxyl radical (•OH) was the dominant active reactive oxygen species (ROS) for ECs degradation, and the narrowed pore structure could serve as microreactors to increase ROS concentration and reduce migration distance. Consequently, the removal efficiencies of antibiotics, bacteria and ARGs were 86.5 %, 91.4 % and 91.8 %, respectively. Overall, this novel visible-light-activated PUF membrane expands membrane application, and has great potential in ECs treatment.
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Science Advances
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2025
·Vol. 11
·期 11
·
IF 12.5
Jiawei Chen,Shulin Chen,Xiangyu Liu,Danlei Zhu,Bo Cai,Xiyu Luo,Wenjing Feng,Yuanzhuang Cheng,Yaonan Xiong,Jiuyao Du,Zhou Li,Dongdong Zhang,Lian Duan,Dongxin Ma
Perovskite quantum dots (QDs) show an excellent application perspective in semiconductor optoelectronic devices. However, problems of ligand loss during the growth, purification, film formation, and storage process always induce the aggregation and ripening of QDs, adversely affecting QDs’ and QD-based devices’ performance. Here, we use a bidentate molecule to control ripening toward a notable performance boost in CsPbI3 QDs. The strong interaction between QDs and the bidentate molecules maintains stable surface states of QDs, inhibiting QDs’ undesirable ripening and generation of defects. We fabricate QD-based light-emitting diodes (LEDs) with a maximum external quantum efficiency (EQE) of 26.0% at 686 nm and an operating half-life of 10,587 hours at an initial radiance of 190 mW sr−1 m−2 (equivalent to a luminance of 100 cd m−2 for green perovskite LEDs). Benefiting from the high storability of the target QDs, the as-fabricated devices based on the QD solution storing for 1 month show a maximum EQE of 21.7% (20.3% for 3 months).
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AIP Advances
·
2024
·Vol. 14
·期 3
·
IF 1.4
Cao Shenyang,Dong Tienan,Cao Yichen,Lei Jiabao,Zhang Siyi,Hang Zusheng,Huang Yu’an
The development and characterization of sulfonated melamine formaldehyde resin microspheres (SMF microspheres) as light diffusers in epoxy resin was presented in this paper. The SMF microspheres were prepared through dispersion polymerization with uniform particle size, smooth surface, and a high refractive index. The particle size of the microspheres was controllable within the range from 0.8 to 3.7 µ m according to the pH during acidic condensation and the amount of melamine. Compared to traditional MF microspheres, SMF microspheres possessed unique sulfonic acid groups, higher primary amine content, and stronger polarity, which prevent agglomeration when mixed with epoxy resin. The SMF microspheres thus prepared were used as light-diffusing fillers with epoxy resin as matrix. Experimental results and single-particle Mie scattering simulations confirmed that SMF microspheres with a higher refractive index and smaller particle size exhibited higher light-shading efficiency and the haze of EP, demonstrating their outstanding light-diffusing performance. In summary, the significant potential application of SMF microspheres in the field of light diffusers was demonstrated.
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INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
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2024
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IF 7.7
Jian Yang,Haojie Yu,Li Wang,Xiaowei Liu,Yudi Huang,Yichuan Hong,Shuning Ren
Infected wound management is a great challenge to healthcare, especially in emergencies such as accidents or battlefields. Hydrogels as wound dressings can replace or supplement traditional wound treatment strategies, such as bandages or sutures. It is significant to develop novel hydrogel-based wound dressings with simple operation, inexpensive, easy debridement, effective antibacterial, biocompatibility, etc. Here, we designed a novel gelatin-based hydrogel wound dressing Gel-TA-Fe 3+ . The hydrogels used tannic-modified gelatin as the main body and Fe 3+ as the crosslinking agent to achieve a controllable rapid sol-gel transition. The hydrogels exhibited tough mechanical properties, excellent antibacterial ability, biocompatibility and an acceptable temperature response to near-infrared light (NIR). Moreover, the hydrogels could promote the healing process of MRSA -infected skin wound in rats. This multifunctional hydrogel was thought to have potential for emergency treatment of bacterial infected wound.
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JOURNAL OF ALLOYS AND COMPOUNDS
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2024
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IF 5.8
Guowei Wang,Shuang Fu,Peng Hou,Yuedong Li,Chunxue Cui,Tonghui Yi,Hongguang Zhang
Utilizing solar energy for photodegradation of organic contaminants is an attractive strategy for environmental remediation. However, the synthesis of photocatalysts for efficient use of solar energy remains a challenge. Herein, we designed and synthesized a hierarchical and porous g-C 3 N 4 (CN) via thermal polymerization of 5-amino-1H-tetrazole (ATZ) and melamine molecules. Experimental results demonstrate that the incorporation of electron-deficient ATZ into the CN structure drastically promotes the separation and transport of photoexcited charge carriers, and increases the specific surface area and pore size of the sample. Based on these unique features, the optimal CN-ATZ1 sample exhibited excellent photocatalytic activity with a rate constant of 0.091 min −1 for the degradation of rhodamine B (RhB) under visible light irradiation, which was about 10.71 times higher than that of bulk CN. Radical trapping experiments demonstrate that the superoxide radical (•O 2 − ) is the major active species during the photodegradation process. This study provides a feasible strategy for the design and construction of g-C 3 N 4 photocatalysts with high degradation activity.
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Inorganic Chemistry Frontiers
·
2025
·
IF 6.4
Lu-Wen Qiu,Wen-Ni Zhang,Lin-Ying Wang,Hao Li,Tian-Kuan Zhang,Mi-Xin Lin,Su-Qin Ci,Jian Lü
In this work, morphological control with a series of sulfur-vacancy-rich CdS photocatalysts has been achieved toward the optimization of their performances in CO2 photoreduction. Results show that sulfur-vacancy-rich CdS nano-platelets (p-CdS-Vs) exhibit the highest CO2 photoreduction activity with a CO yield of 4058.5 μmol h−1 g−1, which is 10 and 6 times those of sulfur-vacancy-rich CdS nanowires (w-CdS-Vs, 372.8 μmol h−1 g−1) and nanorods (r-CdS-Vs, 638.7 μmol h−1 g−1), respectively, amongst the highest numbers for CdS-based photocatalysts reported hitherto. The superior CO2 photoreduction performance of p-CdS-Vs is attributable to its high efficiency of electron transport and suppressed recombination of photogenerated charge carriers. A mechanistic study indicates the critical role of surface sulfur vacancies that provide a microenvironment to trap unpaired electrons for the separation of photogenerated carriers so that the photocatalytic efficiency of CO2-to-CO reduction is largely improved in this current system.
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Nature Communications
·
2024
·Vol. 15
·期 1
·1-21
·
IF 14.7
Tang Dongsheng,Cui Minhui,Wang Bin,Liang Ganghao,Zhang Hanchen,Xiao Haihua
Cationic polymers have great potential for cancer therapy due to their unique interactions with cancer cells. However, their clinical application remains limited by their high toxicity. Here we show a cell membrane-targeting cationic polymer with antineoplastic activity (P mt ) and a second near-infrared (NIR-II) fluorescent biodegradable polymer with photosensitizer Bodipy units and reactive oxygen species (ROS) responsive thioketal bonds (P Bodipy ). Subsequently, these two polymers can self-assemble into antineoplastic nanoparticles (denoted mt-NP Bodipy ) which could further accumulate at the tumor and destroy cell membranes through electrostatic interactions, resulting in cell membrane destabilization. Meanwhile, the photosensitizer Bodipy produces ROS to induce damage to cell membranes, proteins, and DNAs to kill cancer cells concertedly, finally resulting in cell membrane lysis and cancer cell death. This work highlights the use of near-infrared light to spatially and temporarily control cationic polymers for photodynamic therapy, photo-immunotherapy, and NIR-II fluorescence for bio-imaging.
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Surfaces and Interfaces
·
2024
·
IF 5.7
Wenhao Zhang,Libin Zhang,Houjin Luo,Ciyuan Huang,Shangfei Yao,Shangjing Li,Lan Shen,Tao Yang,Hongxiang Zhu,Hongmin Sun,Bin Hu,Bingsuo Zou,Tao Liu
With the increasing pollution of water bodies by herbicides, there is an urgent need to develop an efficient and environmentally friendly photocatalyst using natural light. In this work, we combine the organic heterojunction PBDB-T:BTTIC-TT with biochar to design a low-cost photocatalyst-adsorbent with a higher density of reaction site and reduce the aggregation of the organic catalysts. By tuning the thiophene side chains of the acceptor in organic heterojunction, the visible-light absorption can be enhanced ∼18 % for better catalytic efficiency. The ·O 2 − is verified to play a major role during the photocatalytic process, and the degradation pathway of 2,4,6-trichlorophenol to small carboxylic acids is also revealed. The broader natural light response with the good adsorption of the photocatalyst can effectively enhance the 2,4,6-trichlorophenol removal rate up to 97.4 % within 1 h, and the excellent adaptability over a wide pH range as well as the great stability during 15 catalytic cycles shows the practical applications in the treatment of water bodies with different levels of herbicide pollution.
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npj Clean Water
·
2025
·Vol. 8
·期 1
·1-12
·
IF 11.4
Zhu Yujiao,Yeung Pui Hong,Lo Tsz Wing,Chai Yao,Wong Yat Lam,Chen Ying,Yang Huaming,Yu Weixing,Zayats Anatoly V.,Xie Fengjia,Zhang Xuming
Photocatalytic water purification is an environmentally sustainable approach, but limited by low efficiency due to challenges with photocatalysts and mass transfer. Optofluidic microreactors can address these constraints, yet optimizing reactor configurations and photocatalyst designs remains challenging. Here, we present a novel planar packed-bed optofluidic microreactor (PPOM) using titanium dioxide nanoflowers (TNFs) decorated with gold nanoparticles (Au/TNFs) and conduct a pilot study on efficient visible light-driven water purification. Compared to TNFs in slurry-mode, the Au/TNFs achieve 46-fold enhancement in photodegradation efficiency due to the plasmonic effect, further boosted to 2,700-fold enhancement in the PPOM configuration by improving surface area, light harvesting, and mass transfer. The PPOM also shows a 7-fold efficiency increase compared to planar film-mode microreactors. Theoretical analysis elucidates the influences of plasmonic effect and reactor configuration on the enhanced photocatalytic activity, emphasizing the potential of integrated optofluidic systems and plasmonic-semiconductor heterostructures for sustainable water treatment and energy applications.
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APPLIED CATALYSIS B-ENVIRONMENTAL
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2017
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IF 9.446
Fei Li,Yong Wang,Jian Du,Yong Zhu,Congying Xu,Licheng Sun
Water oxidation as a multi-electron transfer and endothermal reaction has been considered to be the bottleneck of solar-driven water splitting into oxygen and hydrogen. Herein, an alternative approach for solar energy conversion is developed by coupling H 2 generation with the selective oxidation of alcohol. In a closed redox system containing molecular ruthenium catalyst (RuCat) and Pt modified g-C 3 N 4 (Pt-g-C 3 N 4 ) composite, hydrogen production is concomitant with the oxidation of benzyl alcohols to aldehydes with over 99% selectivity in the presence of visible light and pure water. By contrary, the system lacking molecular catalyst only exhibits low to moderate selectivities towards aldehydes. The remarkably improved selectivity is attributed to the formation of highly active Ru(IV) = O intermediate through efficient hole transfer from g-C 3 N 4 to RuCat.
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JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2018
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IF 5.091
Jiaojiao Jiang,Zipeng Xing,Meng Li,Zhenzi Li,Junwei Yin,Junyan Kuang,Jinlong Zou,Qi Zhu,Wei Zhou
Plasmon Ag decorated 3D urchinlike N-TiO 2−x photocatalysts are successfully synthesized by a facile hydrothermal treatment (180 °C) and combined with a photo-deposition approach, followed by a reduction treatment. The results show that the resultant Ag/N-TiO 2−x sample possesses a three-dimensional (3D) urchinlike nanostructure with high crystallinity of anatase. Meanwhile, it exhibits the narrow optical band gap (Eg ∼ 2.61 eV) and the excellent visible-light-driven photocatalytic performance. Moreover, the hydrogen generation rate and photocatalytic degradation rate of phenol are up to 186.2 μmol h −1 g −1 and 97.7% under visible light irradiation, which are about 4.2 and 5.4 folds greater than that of N-TiO 2 . The mechanism of photocatalytic process is also proposed, and the enhanced photocatalytic property is mainly due to the synergistic reaction of the Ti 3+ and N codoping, which narrows the band gap and favors the utilization of visible light, and the plasmon effect of Ag nanoparticles and unique 3D urchinlike architecture, which are propitious to the separation and transmission of photogenerated carriers.
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