INORGANIC CHEMISTRY COMMUNICATIONS
·
2024
·
IF 4.4
Yuhan Xie,Ke Zhang,Boyu Dong,Ranran Xu,Jinxi Chen,Yongbing Lou
A well-designed composite based on semiconductor materials can effectively reduce the recombination of photo-generated carriers in photocatalysts by establishing efficient charge transfer channels, which enhances the activity of photocatalytic hydrogen evolution for water splitting. Herein, a ZnIn 2 S 4 /NiSe 2 composite with NiSe 2 nanoparticles tightly anchored on the nanosheets-assembled microspheres ZnIn 2 S 4 was elaborated and successfully synthesized by a hot-injection method followed by a successive solvothermal method. The synergistic effects and close contact interface between ZnIn 2 S 4 and NiSe 2 facilitated charge migration. Under visible light irradiation, the optimal ratio of ZnIn 2 S 4 /NiSe 2 composite achieved an outstanding hydrogen evolution rate of 3060 µmol g −1 h −1 (nearly 12.6 times of unmodified ZnIn 2 S 4 ) and exhibited superior stability (no apparent decrease within 20 h) in the presence of a sacrificial agent (triethanolamine). Additionally, various characterizations revealed that the recombination of photo-generated carriers was effectively suppressed, visible-light absorption was significantly enhanced, and interface charge transfer was accelerated, thus endowing the ZnIn 2 S 4 /NiSe 2 composite with superior photocatalytic activity . This research provides illuminating insights into using the non-noble metal-based catalyst NiSe 2 as an effective co-catalyst, significantly improving photocatalytic performance and holding great potential in alleviating energy shortages and environmental pollution problems.
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INORGANIC CHEMISTRY
·
2024
·
IF 4.3
Shiye Li,Zewei Liu,Huan Ouyang,Jun Pang,Chengzhang Deng,Zhisheng Xiao,Rong Tan
Confined catalysis, where a chemical reaction is accommodated within a nanoscale host, provides an effective approach to control the pathways and outcomes of catalytic transformations. However, the confinement effect is typically limited to a fixed rate and/or selectivity once the nanohost is chosen. Herein, we developed a photoresponsive metal–organic framework (MOF) as a “smart” nanohost to realize ultraviolet (UV) light-enhanced confined catalysis of Knoevenagel condensation. Photoresponsive MOF of Zn-ADA was thus prepared by solvothermal strategy where azobenzene-4,4′-dicarboxylic acid (ADA) was used as the photoactive linker to coordinate with zinc nitrate. Characterization results suggested that UV light could decrease the pore size of Zn-ADA due to suppressed bending of the azobenzene-containing ADA linker in Zn-ADA. It enforced the proximity between substrates and catalytic groups within the confined space, and thus enhanced the confinement effect on Knoevenagel condensation. The UV light-enhanced confined catalysis enabled the translation of light stimulus into chemical signal, which may open up new control on the basis of the specific reaction field.
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Nano Materials Science
·
2024
·
IF 12.6
Hua-Jie Wang,Hao Peng,Wen-Hao Ji,Jia-Xin Wang,Xiao-Yan Du,Wen Song,Wen Zhang,Fazli Wahid,Ali Raza
Face masks play a pivotal role in preventing infection transmission. However, the capture of infection-sourced particles in face masks poses challenges related to reuse, necessitating proper disposal. We developed a self-sterilizable polypropylene-based membrane for face masks to address challenges associated with infection transmission prevention. The membrane, created using 3D printing, underwent functionalization with zinc oxide (ZnO) and polydopamine (PDA)-TEMPO to achieve broad-spectrum light absorption and facilitate self-sterilization through photocatalytic and photothermal effects upon light exposure. The hydrophobic surface (water contact angle: 133 ± 2°) minimized moisture accumulation, and the membrane exhibited robust mechanical properties, including shear strength (1.25 ± 0.5 kPa) and peel resistance strength (112.8 ± 11.2 kPa). The evaluation demonstrated stability in airflow (0–500 cm 3 /s) and excellent aerosol filtration efficiency (94.8 ± 0.6 %) for particles (PM 0.3, PM 2.5, PM 10), comparable to commercial masks. The membrane showed antibacterial efficacy over five uses in a simulated respiratory environment. Safety assessments confirmed biocompatibility through cytocompatibility and skin irritation assays. In conclusion, this membrane offers efficient filtration and photo-triggered sterilization, presenting a promising solution for next-generation face masks to address concerns related to reuse, disposal, and infection control.
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Journal of Materials Chemistry C
·
2024
·Vol. 12
·期 37
·15051-15057
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IF 5.7
Yaling Wang,Genghong Huang,Zishan Yan,Guangqun Cao,Wenjing Zheng,Shengliang Hu,Bin Liu,Yongzhen Yang
Multicolor-emissive carbon dots (ME-CDs) have been extensively utilized in various fields such as optoelectronic devices, bioimaging, and sensing due to their tunable luminescence properties, solubility, stability, and biocompatibility. However, achieving ME-CDs in a straightforward manner remains a critical bottleneck hindering their wider industrial application. Herein, we report a facile method to prepare ME-CDs using p-phenylenediamine and urea as precursors by changing the type of reaction solvent. Specifically, when the solvents are formamide, deionized water, dimethylformamide, and ethanol, the fluorescence colors are blue, green, yellow, and red, respectively, covering the entire visible light range. The absolute fluorescence quantum yields and lifetimes are 63.02%/1.6 ns, 15.17%/3.4 ns, 16.82%/7.7 ns, and 17.81%/18.8 ns, respectively. The structure and photophysical properties of ME-CDs indicate that the emission of ME-CDs originates from different photoluminescence centers, namely clusteroluminescence, (n, π*) transition of heteroatom groups and (π, π*) transition of large π-conjugated structures. Furthermore, it is demonstrated that ME-CDs can be used as phosphors to fabricate multicolor light-emitting devices (LEDs). This study offers a simple and low-cost method to prepare ME-CDs and employ them as phosphors for LEDs.
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CHEMICAL ENGINEERING JOURNAL
·
2024
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IF 13.3
Mengtian Shang,Shaoshuai Ma,Jianfeng Ma,Luyao Guo,Cong Liu,Xinhua Xu
Intelligent stimulus-responsive actuation and excellent sensation of many living organisms have provided researchers a novel insight to fabricate biomimetic self-sensing systems. However, developing indispensable capabilities for somatosensory actuators with information on-demand display and storage encryption system remains a severe challenge. Herein, an intellective somatosensory gradient hydrogel actuator was demonstrated, which combined excellent actuating speed and high sensitivity for on-demand display and storage of information. The conductive hydrogels are synthesized by one-pot polymerization of poly(N-isopropylacrylamide) (namely PNIPAM) and polyaniline functionalized MXene (namely P-MXene) nanocomposites where P-MXene nanosheets offer photothermal responsive characteristics to hydrogel and generate directional migration under the DC electric field to make the hydrogel present anisotropic microstructure. The multifunctional hydrogels have advantages of fast response speed (9.23° s −1 ) and excellent cycle stability, augmented photothermal conversion efficiency (increase to 1.18 °C/s upon 808 nm near-infrared light), and the bending angle reached to 9° s −1 could be adjusted through light-driven remote control. Shape-programmable actuators are fabricated by devising ITO glass electrode patterns, controlling DC electric field direction, and thus various shape-morphing designs such as 6, U, S, Ω are watched under the NIR light irradiations, and the conductivity somatosensory hydrogel has outstanding strain sensor properties, within a universal strain range (100 %), good linearity (R 2 = 0.97) and high sensing properties (GF = 3.11). As a proof-of-concept, self-sensing actuators are applied for an information storage system and a simple deception for on-demand information display that can simultaneously deliver information via real-time displayed pattern variation. This work can provide fundamental research for smart soft actuators chemically integrating actuating speed and sensing functions in the field of information encryption.
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JOURNAL OF ALLOYS AND COMPOUNDS
·
2025
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IF 6.3
Shukang Jiang,Guangwei Zheng,Junhao Sun,Fengqing Zhang,Hongwen Yu
The surface plasmon resonance (SPR) of plasmonic metals is an effective strategy for enhancing photocatalytic efficiency. Herein, we successfully synthesized the SPR-promoted Bi/Bi 2 WO 6 heterojunction photocatalysts by in situ reduction of Bi 3 + in Bi 2 WO 6 nanosheets to plasmonic Bi via a facile solvothermal method. The size of Bi nanoparticles on the surface of Bi 2 WO 6 was adjusted by varying the solvothermal temperature. After 15 min of visible light irradiation, the Bi/Bi 2 WO 6 heterojunction with a suitable size of metal Bi obtained after solvothermal treatment at 160°C exhibited 100 % degradation of Rhodamine B (RhB), which was 2.3 times greater than that of the pure Bi 2 WO 6 . The excellent photodegradation performance of this sample can be attributed to the SPR effect of metal Bi, which enhances light absorption, generates active sites and species, and facilitates rapid carrier transfer. Additionally, the formation of the Bi/Bi 2 WO 6 Schottky heterojunction promotes carrier separation and minimizes the recombination of photogenerated electron-hole pairs. Furthermore, a potential mechanism for the photodegradation process of the synthesized photocatalyst has been proposed. This work not only offers new perspectives on in situ fine-tuning strategies for Bi-based photocatalysts but also demonstrates the potential of low-cost metallic Bi as a viable alternative to noble metals for enhancing photocatalytic performance.
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Nature Communications
·
2025
·Vol. 16
·期 1
·1-21
·
IF 15.7
Zhang Hugang,Jia Jiaxin,Liu Hanyu,Han Haobo,Li Quanshun
Rheumatoid arthritis is a common autoimmune disease characterized by chronic synovial inflammation and joint destruction, primarily driven by an imbalanced cellular metabolism and inflammatory microenvironment. While gene therapy offers a promising therapeutic approach, its effectiveness is limited by the challenges of non-specific gene expression in healthy tissues. Here, we develop a gene delivery system (namely APPC), in which near-infrared (NIR)-responsive gold nanorods are coated with chondroitin sulfate-modified polyethyleneimine to facilitate the heat-responsive targeted delivery of heme oxygenase 1 (HO-1) gene. The APPC shows favorable transfection efficiency due to its targeting ability and significantly facilitates HO-1 expression under NIR irradiation. The combination of APPC/pHO-1 and NIR can effectively reprogram the cellular metabolism and repolarize the macrophages and fibroblast-like synoviocytes, thereby inhibiting inflammation by suppressing glycolysis. Meanwhile, APPC can specifically enhance the HO-1 expression in inflamed tissues through NIR-mediated the activation of heat shock protein 70 promoter, ensuring the precise gene expression via photothermal conversion. In a collagen-induced arthritis model, APPC/pHO-1 under NIR irradiation exhibits potent therapeutic efficacy, restoring the articular microenvironmental homeostasis and mitigating the symptoms of rheumatoid arthritis. These findings highlight the potential of APPC/pHO-1 nanoparticles in the gene therapy of rheumatoid arthritis and other inflammatory diseases.
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MOLECULES
·
2024
·Vol. 29
·期 5
·1094
·
IF 4.2
Hui Liang,Yongxin Zhao,Tongjin Liu,Ruijuan Li,Rumei Li,Yuxiao Zhu,Feng Fang
Zn-doped MnCO3/carbon sphere (Zn-doped MnCO3/CS) composites were synthesized using a simple hydrothermal procedure. Among various samples (ZM-50, ZM-05, and ZMC-0), the ternary Zn-doped MnCO3/CS (ZMC-2) catalyst demonstrated excellent visible light-induced photocatalytic activity. This improvement comes from the Zn addition and the conductive CS, which facilitate electron movement and charge transport. The catalyst exhibited efficient degradation of methylene blue (MB) over a wide pH range, achieving a removal efficiency of 99.6% under visible light. Radical trapping experiments suggested that •OH and •O2−played essential roles in the mechanism of organic pollutant degradation. Moreover, the catalyst maintained good degradation performance after five cycles. This study offers valuable perspectives into the fabrication of carbon-based composites with promising photocatalytic activity.
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DESALINATION
·
2025
·
IF 9.8
Liting Luo,Hao Li,Jiazheng Zhou,Wenjie Li,Abdul Haleem,Jianming Pan
Developing magnetic adsorbents with superior adsorption capability has always been a massive challenge. Herein, an in-situ growth strategy was implemented to build polydopamine-encapsulated lightweight hollow magnetic microspheres and used to achieve selective recovery of gold from e-waste. The fabricated magnetic-dielectric microspheres, including hollow magnetic polydopamine microspheres (HMPM) and hollow magnetic polydopamine microspheres modified by allyl thiourea (HMPM&A), exhibited excellent gold adsorption capacities of 1205 mg g −1 and 1766 mg g −1 , respectively at 298 K. The adsorption capacity was amazingly upsurged up to 1850 mg g −1 and 2715 mg g −1 under ultraviolet light, respectively, which is relatively enhanced compared to other reported magnetic adsorbents. The XPS survey and DFT calculations confirmed that Au(III) ions adsorption principally attributed to electrostatic interaction of N sites under acidic mediums and chelating interaction between Au(III) and S,N chelating site of thiourea groups, followed by subsequent reduction of Au(III) into to Au(0) with thiourea and dopamine units. The developed magnetic adsorbent showed impressive chemical stability for Au(III) adsorption up to eight consecutive adsorption-desorption cycles without any noticeable change in adsorption performance. The recovery rate of HMPM&A for Au(III) ions from actual samples was better up to 86.7 %. This work will broaden the construction strategy of magnetic adsorbents and promote the application of magnetic materials as an efficient functional material.
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DIAMOND AND RELATED MATERIALS
·
2024
·
IF 4.3
Yueyi Li,Yuehui Liu,Xuguang Liu,Xia Li
In this study, rGO/Bi 2 O 2 CO 3 /BiOCl composite photocatalysts were prepared using a one-step solvothermal method . The formation and morphology of these photocatalysts were characterized through XRD , Raman, XPS , SEM , TEM, and other techniques. The efficiency of the composite photocatalysts was assessed by decreasing RhB under visible light . Among them, the photocatalytic activity of 4 wt% rGO/Bi 2 O 2 CO 3 /BiOCl was discovered to be the best, with a degradation rate as high as 96 % within 60 min. This is because the inclusion of rGO not only increased the specific surface area of the ternary materials, but also acted as a carrier for electrons transfer . Besides, the heterojunction structure constituted between Bi 2 O 2 CO 3 and BiOCl also opens up a new pathway for carrier separation. Finally, we explored the degradation mechanism of rGO/Bi 2 O 2 CO 3 /BiOCl ternary materials in detail. This study holds an important reference for the synthesis of bismuth-based composite photocatalysts and has potential applications in wastewater treatment .
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JOURNAL OF LUMINESCENCE
·
2024
·
IF 3.3
Yunpeng Yao,Xitao Liu,Yu Peng,Zuju Ma,Lina Li,Junhua Luo
Low-dimensional metal halide hybrids with efficient warm white-light emission from self-trapped excitons (STEs) have attracted extensive attention for interior lighting because of their fascinating emission features including high colour rendition, excellent colour stability, and low manufacturing cost. Despite great efforts, the mechanism of STEs in one-dimensional (1D) metal halide hybrids is still unclear, which makes the way to regulate white-light emission is still worth exploring. Here, we prepared a double-chain organic-inorganic metal halide hybrid crystal, (C 6 H 1 8 N 2 )Pb 2 Br 6 ∙H 2 O ( DEPBH ). Strikingly, DEPBH shows a warm white-light emission with an appropriate correlated colour temperature of 3714 K and high colour rendering index up to 89. Especially, further research reveals that STEs springs from the 1D core-shell quantum-wire frame play a crucial role in such warm white-light emission of DEPBH . This work offers a new route to fabricate single-component warm white-light phosphors in low-dimensional materials and will contribute to the further exploration of their relationships between crystal structure and optical properties.
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ACS Applied Materials & Interfaces
·
2024
·
IF 8.3
Xiang Zhang,Jinghui Li,Peipei Du,Zixi Shen,Hao Chen,Haozhi Wang,Nian Liu,Junhu Cai,Jiajun Luo,Enguo Chen
Perovskite light-emitting diodes (PeLEDs) have attracted significant interest in next-generation intelligent displays. Vacuum deposition is a promising method for integrating PeLEDs into intelligent displays due to its high manufacturability and easy pixelation, as proven in industrial organic light-emitting diode production. However, achieving spatially confined grains with optimized crystal remains challenging in vacuum-deposited perovskite. Here, a trisource coevaporation strategy is proposed to introduce MABr to form the MAxCs1–xPbBr3 structure with carriers’ spatial confinement and defect suppression as well. This approach enables PeLEDs to contain excellent external quantum efficiency (EQE), which is nearly 10-fold as the untreated device. Based on this, we realize the first reported vacuum-deposited transparent PeLEDs with double-sided emission and an amazing maximum EQE of 7.6% by replacing Al with an optimized Ag:Mg electrode. These transparent PeLEDs are integrated into a bifunctional intelligent display device with both accurate heart rate detection and imaging display, which exhibit bright patterned emission and accurate heart rate detection.
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