JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2025
·
IF 9.7
Tongyao Liu,Sitong Chen,Wei Jiang,Xudong Zhang,Xia Zhang,Xiaogang Zhang,Mingwei Shao,Riming Hu,Xuchuan Jiang
Rational regulation of the migration and separation of photogenerated charge carriers is a pivotal strategy for optimizing photocatalytic activity. To maximize the potential of piezoelectric and plasmonic properties, W 18 O 49 /BaTiO 3 heterostructures were fabricated via a straightforward solvothermal process. As anticipated, the W 18 O 49 /BaTiO 3 heterostructures demonstrated a significantly enhanced piezo-photocatalytic degradation of tetracycline under ultraviolet, visible, and near-infrared light irradiation combined with ultrasound stimulation, outperforming both bare BaTiO 3 and W 18 O 49 . In-depth investigations indicate that the remarkable piezo-photocatalytic performance of the W 18 O 49 /BaTiO 3 heterostructures arises from their exceptional photon energy harvesting across the ultraviolet (UV) to near infrared (NIR) spectrum driven by the localized surface plasmon resonance effect of W 18 O 49 , as well as the enhanced charge-carrier separation facilitated by the polarized electric field of BaTiO 3 and the built-in electric field of the heterojunction. Consequently, the hybrid W 18 O 49 /BaTiO 3 heterostructure, which exploits synergistic piezoelectric and plasmonic effects, demonstrates great potential for antibiotic pollutant treatment.
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JOURNAL OF LUMINESCENCE
·
2025
·
IF 3.6
Chang Tan,Li Song,Zhibo Ge,Yuan Zhang,Ganlu Fan,Xiaowen Hao,Zihan Zong,Yuanqin Xia
Blue perovskite light-emitting diodes (PeLEDs) have showcased remarkable potential for applications in vibrant color displays and solid-state lighting. Particularly, quasi-two-dimensional (quasi-2D) blue PeLEDs exhibit exceptional performance. However, conventional Ruddlesden-Popper (RP) phase quasi-2D perovskites suffer from low energy transfer efficiency and poor stability stemming from the van der Waals gaps between the perovskite layers, which hinder the preparation of high-performance quasi-2D blue PeLEDs. Here, we take advantage of the Dion-Jacobson (DJ) phase perovskite constructed with diammonium ligands to regulate the optical properties and structural stability of RP phase perovskite films. It is found that the mixed RP-DJ phase perovskites exhibit superior thermal stability, higher energy transfer efficiency and higher photoluminescence quantum yield (PLQY) compared to the pure RP phase perovskites. As a result, a sky-blue PeLED with an electroluminescence (EL) peak at 492.4 nm and a maximum external quantum efficiency (EQE) of 11.37 % was achieved.
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JOURNAL OF ENVIRONMENTAL MANAGEMENT
·
2025
·
IF 8.4
Junzi Huang,Mengjie Lu,Min Liu,Yahong Xie,Peng Wei,Huihui Xie,Liang Li,Weitao Han,Zhiwei Zhang,Ying Qi
The residues of tetracyclines (TCs) antibiotics present significant challenges in terms of contamination and pose a threat to human health. In this study, a cost-effective n-type semiconductor, CeO 2 , were loaded with small amounts of Au nanoparticles were fabricated by one-step hydrothermal method under alkaline conditions in the presence of the surfactant CTAB. Characterization tests revealed that Au/CeO 2 had significant visible light absorption capacity and good e − /h + separation efficiency. Photocatalytic degradation results of TC showed that 2% Au/CeO 2 -CTAB had the highest photocatalytic activity, achieving a degradation rate of 86.4% within 90 min. These values were 3.8 and 2.6 times higher than those of pure CeO 2 and CeO 2 -CTAB (without Au loading), respectively. Loading Au nanoparticles substantially increased the visible light absorption range, reduced bandgap width, and lowered photo-generated carrier recombination rate. Residual e − /h + on the semiconductor surface activating functional groups, further promoting photocatalytic degradation of pollutants such as TC. Au-loaded CeO 2 nano-photocatalysts have potential applications in the environments polluted by antibiotic residues.
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Surfaces and Interfaces
·
2024
·
IF 5.7
Jun Han,Fangzhou Wu,Zhongwei wang,Yan Gao,Bin Dai,Wei Wang
The performance of the photocatalysts is influenced by factors such as electron generation ability, charge separation rate, and active sites distribution. In this study, needle-shaped precursors were prepared through low-temperature supramolecular self-assembly, and conical porous hollow carbon nitride (PHCN) was obtained after high-temperature pyrolysis. The PHCN not only possesses a thin-walled porous structure but also contains nitrogen defects embedded in its structure, which synergistically enhance the efficiency of photogenerated charge separation and provide more reactive sites. The DFT calculations showed that nitrogen defects and Pt-loading synergistically optimize the intermediate reaction process of graphitic carbon nitride (g-C 3 N 4 ). PHCN had excellent photocatalytic degradation of tetracycline hydrochloride (TCH) and Rhodamine B (Rh B). The photocatalytic hydrogen evolution rate of PHCN was 20.0 times higher than that of bulk g-C 3 N 4 (BCN). This study elucidated the relationship between crystallization rate and precursor morphology, as well as the influence of their physicochemical properties on photocatalytic performance. It also lays the foundation for constructing materials with nitrogen defects and special morphology through supramolecular self-assembly.
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Environmental Science-Nano
·
2024
·
IF 5.8
Junzhuyan Wang,Chenjie Zhang,Zhao Qi,Minmin Xu,Yaxian Yuan,Jianlin Yao
Photocatalytic degradation and low-concentration detection of tetracycline (TC) are often limited by the high recombination ratio of carriers and low sensitivity. Herein, we synthesized Bi4Ti3O12 nanosheets (BiTO NSs) by a molten salt method and decorated them with silver nanoparticles (Ag NPs) to obtain BiTO/Ag heterojunctions for degradation via piezo-photocatalysis and detection by surface enhanced Raman spectroscopy (SERS). The synergetic effect originating from piezoelectricity and surface plasmon resonance (SPR) can improve the photon utilization, resulting in an enhancement in the catalytic performance and detection sensitivity. The reduction of TC by BiTO/Ag was as high as 92.1% within 120 min in a solution of 10 ppm, and the limit of detection (LOD) can reach 0.01 ppm. This work offers a new strategy to achieve the effective degradation and high-sensitivity detection of TC by a BiTO/Ag bifunctional heterojunction material.
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Acta Pharmaceutica Sinica B
·
2024
·
IF 14.7
Li Qiao,Zhiyao Li,Bowen Li,Fu Zhang,Zhuo Yao,Chongzhi Wu,Honglin Tang,Qi Pan,Peihua Shi,Yuan Ping
Osteoarthritis (OA) is a type of highly prevalent heterogeneous degenerative disease that leads to joint pain, deformity, the destruction of articular cartilage, and eventual disability. The current treatment strategies for OA often suffer from systemic side effects, poor anti-inflammatory efficacy, and persistent pain. To address these issues, we develop light-inducible nanomedicine that enables the co-delivery of anti-inflammatory drug (diacerein, DIA) and small interfering RNA (siRNA) targeting nerve growth factor (NGF) for pain relief to enhance the therapeutic efficacy of OA. The nanomedicine is based on poly( β -amino-ester)-coated gold nanocages (AuNCs), which is further incorporated with the phase-change material (lauric acid/stearic acid, LA/SA). Following intra-articular (IA) injection in vivo , the nanomedicine displays high degree of drug accumulation and retention in the joint lesion of OA mouse models. The photothermal effect, induced by AuNCs, not only promotes DIA and siRNA release, but also upregulates the expression of heat shock protein 70 (HSP-70) to resist the apoptosis of chondrocytes in the inflammatory condition. The internalization of both DIA and siRNA results in strong anti-inflammatory and pain-relieving effects, which greatly contribute to the joint repair of OA mice. This study offers a promising combination strategy for OA treatment.
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Journal of Materials Chemistry B
·
2024
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IF 6.1
Ke Wang,Sicheng Zhai,Yuanyuan Qin,Mengke Hao,Siqi Su,Shuming Li,Xuexue Tang
Controlled drug release with on demand holds great promise for cancer therapy. Light-degradable nanocarriers have gained increasing attention for designing controllable drug delivery systems due to their spatiotemporally controllable properties. Herein, a high luminescent and light-degradable nanocarrier is constructed by intercalating glutathione-capped gold nanoclusters (AuNCs) into zeolitic imidazolate framework-8 (ZIF-8) via competitive coordination assembly, named as AuNC@ZIF-8, for light-triggered drug release. Glutathione-capped AuNCs and 2-methylimidazole (MIm) competitively coordinated with Zn2+ to form AuNC@ZIF-8 via one step process in aqueous solution. Specifically, the obtained AuNC@ZIF-8 has a high quantum yield of 52.96 % and displays a distinctive property of photolysis. The competitive coordination interactions within AuNC@ZIF-8 were evidenced by X-ray diffraction and X-ray photoelectron spectroscopy, in which Zn2+ strongly coordinated with the N of MIm and weakly coordinated with the carboxyl/amino groups in glutathione of AuNCs. Under light irradiation, the Au-S bond on AuNCs breaks, enhancing the coordination ability between carboxyl/amino groups and Zn2+ enhance. This leads to the collapse of the crystal structure of AuNC@ZIF-8 and subsequent fluorescence quenching. Additionally, AuNC@ZIF-8 is successfully employed as luminescent nanocarriers of anticancer drugs to form drug-AuNC@ZIF-8, in which three typical anticancer drugs are selected due to different coordination interaction. The obtained smart drug-AuNC@ZIF-8 can be effectively internalized into HeLa cells and degraded in response to blue light, with negligible dark cytotoxicity and high light cytotoxicity. This study highlights the crucial role of competitive coordination interactions in synthesizing functional materials with fluorescence efficiency and photolytic properties.
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TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA
·
2017
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IF 1.342
Jia-jia WANG,Lin TANG,Guang-ming ZENG,Yao-yu ZHOU,Yao-cheng DENG,Chang-zheng FAN,Ji-lai GONG,Ya-ni LIU
The photocatalytic degradation of norfloxacin by bismuth tungstate (Bi 2 WO 6 ) with different hierarchical architectures was investigated under visible light irradiation. Bi 2 WO 6 was prepared by hydrothermal method with the reaction solution pH ranging from 4 to11. The relatively ultrathin Bi 2 WO 6 nanoflakes prepared at pH 4 showed excellent adsorption and photodegradation efficiency towards norfloxacin. The characterization results showed that Bi 2 WO 6 prepared at pH 4 had a larger specific area and faster photo-generated carrier separation rate. The decay rate reached the maximum in weak alkaline reaction solution, which could be attributed to the presence of moderate OH − anions. The present study demonstrated that the smaller size of Bi 2 WO 6 could be an efficient photocatalyst on the degradation of norfloxacin in the aquatic environment.
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RSC Advances
·
2017
·Vol. 7
·期 43
·27024-27032
·
IF 3.108
Jinghui Wang,Hui Li,Sugang Meng,Xiangju Ye,Xianliang Fu,Shifu Chen
Controlled synthesis of Sn-based oxides with a different valence state is still a challenge. Here, we developed a facile hydrothermal method for selective preparation of SnO2, Sn2+ doped SnO2 (Sn2+–SnO2), and SnO/SnO2 composites, and SnO with SnCl2 as a precursor. The valence state of Sn was regulated successively from Sn4+ to Sn2+ through controlling the hydrothermal solution from an O2-rich to an O2-deficient atmosphere, which was achieved by adding H2O2 or urea into the solution. The structure, absorption, morphology, and the visible light photocatalytic performance of the products were investigated systematically. SnO2, Sn2+–SnO2, SnO/SnO2, and SnO could be prepared in a H2O2-contained, H2O, urea-contained, and N2 purged urea-contained solution, respectively. For Sn2+–SnO2, the doping amount of Sn2+ could be further tuned by varying the hydrothermal temperature, while for SnO/SnO2, the coupling amount of SnO could be controlled by the dosage of urea. Visible-light-induced photocatalytic degradation of methyl orange was achieved successfully on Sn2+–SnO2 and SnO/SnO2. However, further work is still required to improve the stability of the samples due to vulnerability of Sn2+.
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OPTICAL MATERIALS
·
2024
·
IF 3.8
Shuoqi Zhang,Mingxing Zhao,Lei Shi,Chunsheng Lei
In this paper, a novel Z-scheme BiOI/ZIF-67 photocatalyst (BOI/ZIF) was successfully prepared using an in-situ growth method, and its effectiveness in degrading tetracycline (TC) under visible light was assessed. Using a range of characterization techniques, the crystal structure, elemental composition, microstructure and optical characteristics of the composite catalyst were examined. Simultaneously, a 30 % mass ratio catalyst (BOI/ZIF-30) could remove 91 % of TC under visible light, which was 41 % and 28 % greater than the degradation rates of BiOI and ZIF-67, respectively. These results demonstrated that BOI/ZIF exhibited strong photocatalytic activity and excellent stability. The results of the radical quenching experiment and electron spin resonance revealed that h + and •O 2 − were the principal chemical substances responsible for TC degradation, corresponding with the suggested charge transfer mechanism of Z-scheme heterojunction. The Z-scheme heterojunction created between BiOI and ZIF-67 improved the effective separation of photogenerated carriers and boosted the efficiency of TC degradation. This study offers a promising method for designing photocatalytic systems to break down antimicrobial contaminants.
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OPTICAL MATERIALS
·
2024
·
IF 3.8
Zongyi Meng,Zunxian Yang,Yuliang Ye,Zhiwei Zeng,Hongyi Hong,Songwei Ye,Zhiming Cheng,Qianting Lan,Jiaxiang Wang,Ye Chen,Hui Zhang,Yuting Bai,Xudong Jiang,Benfang Liu,Jiajie Hong,Tailiang Guo,Fushan Li,Yongyi Chen,Zhenzhen Weng
Quantum-dot light-emitting diodes (QLED) have become a research trend in the field of new displays due to their low cost, wide color gamut , narrow bandwidth, and characteristics that enable production through the solution-gel method. However, the electrical performance of QLED is consistently constrained by energy losses and imbalanced charge carrier injection. This motivates our focus on exciton recombination and energy losses within the quantum-dot layer to enhance the electrical efficiency of QLED. In this work, we introduce a method using a CdZnS quantum dot (B-QD) interlayer to modulate energy transfer and charge carrier transport in QLED devices employing CdSe quantum dot (G-QD) as the emissive layer . By strategically incorporating a B-QD layer between the G-QD and HTL/ETL, we facilitate energy transfer due to the overlap between the excitation wavelength of B-QD and the absorption wavelength of G-QDs. This leads to enhanced energy injection in QLED devices, resulting in a high current efficiency of 39.54 Cd/A and a peak brightness of 522,272 cd/m 2 for efficient QLED. The corresponding external quantum efficiency (EQE) is greatly improved from 5.62 % to 9.4 %. Our work provides a straightforward and effective approach to modulate exciton recombination and energy injection and further can be applicable to other photo-electronics devices.
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INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2025
·
IF 8.5
Sheng Dai,Xueyan Zang,Xuehan Zhang,Meiduo Ren,Hua Qiu,Kunlin Chen
The increasing emphasis on green and sustainable development has propelled the integration of lignin into polymer matrices as a promising trend. Lignin, a highly reactive biomass material endowed with hydrophilic functional groups, presents significant potential in polymer applications. However, its intrinsic dark coloration poses a considerable challenge to its polyurethanes (PU) use. In this study, lignin was chemically modified through sulfonation, introducing an abundance of sulfonic acid groups that not only enhanced its hydrophilicity but also markedly reduced its color intensity. Additionally, 2-methacryloyloxyethyl phosphorylcholine diol (MPC-diol) was employed as a chain extender in conjunction with sulfonated lignin (SL) to further augment the hydrophilicity of the resulting PU. The incorporation of both anionic and cationic species within the polymer side chains facilitated improved polymer chain interactions. The synergistic combination of polycaprolactone (PCL) soft segments and SL end-capped segments enabled the formation of multiple hydrogen bonds and disulfide linkages, culminating in waterborne polyurethanes (WPU) characterized by superior mechanical properties and self-healing capabilities. The application of these light-colored, SL-based polycarbonate waterborne polyurethane (PCPUSL) coatings to fabrics significantly enhanced their biocompatibility and antimicrobial properties. This development represents a green, sustainable, and highly flexible WPU coating with exceptional self-healing properties and promising potential for diverse applications.
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