ACS Catalysis
·
2025
·
IF 13.1
Hailong Xie,Yishu Wang,Yu-Hui Xie,Dong Feng,Feng Wu,Delong Xie,Yi Mei,Yu-Xin Liu
Photoreforming of plastic waste offers a solution for reducing environmental pollution while producing value-added products. This study investigates the impact of conduction band edge modulation on the photoreforming efficiency of waste polyethylene terephthalate (PET) using a TiO2/black phosphorus nanosheet (BPNS) heterojunction catalyst, leveraging the tunable bandgap and high carrier mobility of BPNSs. The BPNS/TiO2 heterojunction demonstrated remarkable PET degradation under simulated solar illumination, achieving an 80% weight loss after 35 h. Simultaneously, the system exhibited efficient hydrogen evolution, producing 345.2 μmol g–1 h–1 of H2. Bandgap modulation analysis revealed that as the conduction band edge (ECB) of the photocatalyst became more negative, the increase in CO evolution rates surpassed those of H2 and CO2, likely due to enhanced charge transfer, stronger oxygen adsorption, and a more negative reduction potential. The influence of bandgap tailoring on charge separation, transfer dynamics, and oxygen radical generation, directly linked to photoreforming efficacy, was analyzed through EIS, ESR, and DFT calculations. This study underscores the potential of BPNS/TiO2 heterojunctions for efficient and selective photoreforming of different plastic waste, offering valuable insights into catalyst design for environmental remediation and energy recovery.
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INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
·
2025
·Vol. 26
·期 16
·7751
·
IF 4.9
Jian Feng,Xiaohui Li,Xia Ran,Li Wang,Bo Xiao,Rong Li,Guangwei Feng
Fenton oxidation technology utilizing hydrogen peroxide is recognized as an effective method for producing reactive oxygen species (ROS) to facilitate the degradation of antibiotics. However, the requirement for strongly acidic conditions during this process significantly restricts its broader applicability. In this study, we synthesized black phosphorus (BP) nanosheets by exposing the {010} crystal planes and then constructed a 0D/2D BP/Bi2MoO6(PBMO) heterojunction to function as a Fenton catalyst. The PBMO-75 heterojunction exhibited a remarkable increase in photo-Fenton catalytic activity towards oxytetracycline (OTC) under neutral conditions, achieving catalytic efficiencies that were 20 and 8 times greater than those of BP and Bi2MoO6(BMO), respectively. This can be attributed to its strong absorption of visible light, the establishment of an internal electric field (IEF) at the interface, and the implementation of a Z-scheme catalytic mechanism. Additionally, the photo-Fenton system was further improved in OTC degradation through the continuous conversion of Mo6+/Mo5+under visible light irradiation in conjunction with H2O2. Based on ERS, XPS, and active species trapping experiments, we propose a Z-scheme charge transfer mechanism for PBMO. This research offers compelling evidence that 0D/2D Z-scheme heterojunctions are promising candidates for the photo-Fenton treatment of antibiotic contaminants.
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Journal of Semiconductors
·
2024
·Vol. 45
·期 3
·032703
·
IF 4.8
Xinfa Zhu,Weishuai Duan,Xiancheng Meng,Xiyu Jia,Yonghui Zhang,Pengyu Zhou,Mengjun Wang,Hongxing Zheng,Chao Fan
The emergent two-dimensional (2D) material, tin diselenide (SnSe2), has garnered significant consideration for its potential in image capturing systems, optical communication, and optoelectronic memory. Nevertheless, SnSe2-based photodetection faces obstacles, including slow response speed and low normalized detectivity. In this work, photodetectors based on SnS/SnSe2 and SnSe/SnSe2 p−n heterostructures have been implemented through a polydimethylsiloxane (PDMS)−assisted transfer method. These photodetectors demonstrate broad-spectrum photoresponse within the 405 to 850 nm wavelength range. The photodetector based on the SnS/SnSe2 heterostructure exhibits a significant responsivity of 4.99 × 103 AW−1, normalized detectivity of 5.80 × 1012 cmHz1/2W−1, and fast response time of 3.13 ms, respectively, owing to the built-in electric field. Meanwhile, the highest values of responsivity, normalized detectivity, and response time for the photodetector based on the SnSe/SnSe2 heterostructure are 5.91 × 103 AW−1, 7.03 × 1012 cmHz1/2W−1, and 4.74 ms, respectively. And their photodetection performances transcend those of photodetectors based on individual SnSe2, SnS, SnSe, and other commonly used 2D materials. Our work has demonstrated an effective strategy to improve the performance of SnSe2-based photodetectors and paves the way for their future commercialization.
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ADVANCED FUNCTIONAL MATERIALS
·
2025
·
IF 19
Jingjing Liu,Ke Pei,Yongshen Zhou,Shuangmin Fu,Shulun Ai,Yunli Wang,Huiyu Jiang,Zhiwen Zhou,Zhiguang Guo
The integration of bio-inspired nanostructured metal-organic frameworks (MOFs) with textiles opens new frontiers for smart wearable systems. This study develops a mechanically robust superhydrophobic AgTCNQ-MOF hybrid fabric via in situ self-assembly, mimicking cactus spines to achieve water contact and sliding angles of 159.2° and 1.8°, respectively. The optimized textile demonstrates multifaceted functionality: 1) Ultrahigh oil-water separation performance (efficiency: 98.4%; flux: 18.0 kL·m −2 ·h −1 ); 2) Anti-icing capacity extending freezing onset from 105 s to 685 s under −20 °C; 3) Full-spectrum UV resistance (UVA: 2.5%, UVB: 2.7%) with 99.8% antimicrobial efficacy; 4) Autonomous self-cleaning via contaminant-removing rolling droplets; and 5) Outstanding mechanical flexibility (6000 cycles) coupled with ultrahigh solar-thermal efficiency (91.5%) enabled by AgTCNQ-derived ultrasmall-bandgap (0.47 eV) engineering, a notable advancement over conventional systems. A covalent interfacial anchoring strategy ensures exceptional durability, maintaining superhydrophobicity after 30 abrasion cycles or 200 h UV exposure. The ultrasmall-bandgap of AgTCNQ uniquely optimizes photon-to-thermal conversion while maintaining multifunctionality, which is a key innovation differentiating this platform. This synergy between bandgap-engineered nanoporosity and textile flexibility enables real-time environmental responsiveness. Such integration bridges nanotechnology and textile engineering to address wearable-environmental challenges, advancing applications in medical wearables, industrial filtration, and adaptive robotics.
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Journal of Materials Chemistry C
·
2025
·
IF 5.1
Guanghao Sang,Xin Zhang,Wei Li,Yuqing Li,Yijiang Chen,Xilong Zhang,Huize Song,Yuntao Cui,Zhongshan Deng
With the increasing integration density of chips and the consequent rise in surface heat flux, there is a growing demand for thermal interface materials (TIMs) that combine high thermal conductivity and long-term reliability. In this work, CuGa2 microparticles were synthesized via melt atomization and subsequently incorporated into gallium-based liquid metal to fabricate composite TIMs. Experimental results demonstrate that when the CuGa2 mass fraction reaches 50%, the composite achieves a maximum thermal conductivity of 74.92 ± 1.04 W/(m·K), approximately 3 times higher than that of conventional gallium-based liquid metal. This enhancement is primarily attributed to metallic bonding at the interface between liquid gallium and the CuGa2 intermetallic compound, where free electrons serve as the dominant heat carriers across the interface. Furthermore, the addition of CuGa2 improves the coating ability of the TIM while reducing its fluidity, thereby reducing the risk of leakage. Long-term testing over 35 days revealed no compositional changes or segregation hardening, confirming the excellent stability of the composite. Overall, Ga/CuGa2 TIMs strengthened by metallic bonding present a promising solution for reliable heat dissipation in high heat flux applications.
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Journal of Cleaner Production
·
2025
·
IF 10
Tao Jiang,Ming Cheng,Yujiao Wang,Shaoqiang Guo,Wentao Zhou,Yafei Wang
The selective removal of neutron-absorbing fission products from spent nuclear fuel is critical for enhancing neutron economy and enabling efficient recycling. In this work, we present a novel two-step dry reprocessing strategy that integrates NH 3 /HCl gas mixture treatment with liquid Sn extraction to achieve phase-selective separation of Sm, Nd, Ru, Rh, and Pd from simulated U 3 O 8 -based spent fuel. Thermodynamic analysis and experimental validation reveal that decomposition of NH 4 Cl at elevated temperatures serves as the generator of NH 3 /HCl gas mixture capable of selectively chlorinating Sm 2 O 3 and Nd 2 O 3 into soluble chlorides while reducing U 3 O 8 to UO 2 and converting RuO 2 , Rh 2 O 3 , and PdO to their metallic states (Ru, Rh, Pd). Subsequent dissolution tests in LiCl-KCl confirm that Sm and Nd are almost completely removed, with chlorination efficiencies of nearly 100%, while uranium loss can be minimized by controlling direct NH 4 Cl contact. The coupled liquid Sn extraction at 1173 K enabled the recoveries of metallic Rh, Rh, and Pd with a promising extraction efficiency. This integrated approach significantly simplifies the partitioning of key neutron poisons (Sm, Nd, Ru, Rh, Pd) compared to conventional aqueous or pyrochemical routes, reduces secondary waste, and preserves uranium in its UO 2 form.
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Materials
·
2025
·Vol. 18
·期 9
·2149
·
IF 3.2
Qingmeng Wang,Xiuli Wang,Xiaomin Cheng,Qianju Cheng,Yi Yang
In the fields of nuclear engineering and solar thermal utilization, low melting point alloys with excellent thermal conductivity and heat transfer performance have attracted extensive research as a new generation of heat transfer fluids, leading to many fundamental and important application issues. This study investigates the high-temperature corrosion behavior of Sn-50Bi-2Zn (wt.%) heat transfer alloy against 304 stainless steel (304), 310S heat-resistant steel (310S), and 20 carbon steel (20C) at 600 °C. Theoretical analysis, based on Fick’s diffusion law, and experimental measurements reveal significant differences in corrosion severity. After 473 h, 20 carbon steel exhibited the lowest corrosion layer thickness (0.07 mm), while 310S suffered the most severe corrosion (1.50 mm), exceeding 304SS (0.83 mm) by 81%. Diffusion coefficients derived from Sn penetration depths further quantified these trends: D310S = 2.51 × 10−7mm2/s (6.8 × higher than 304: 3.7 × 10−8mm2/s) and D20C = 2.87 × 10−10mm2/s (128 × lower than 304SS). XRF analysis confirmed the dissolution of steel components into the molten alloy, with Fe, Cr, and Ni content increasing to 0.382 wt.%, 0.417 wt.%, and 0.694 wt.%, respectively, after 480 h. These results underscore the critical role of Ni content in accelerating Sn/Zn diffusion and pore formation, providing actionable insights for material selection in high-temperature heat transfer systems.
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RARE METALS
·
2025
·Vol. 44
·期 5
·3339-3350
·
IF 11
Wang Wen-Ying,Zhu Jun-Liang,Bo Lin,Zhou Wen-Ying,Liu Xing-Shuo,Li Chang-Cun,Zhang Zheng,Zhao De-Gang
The rock-salt cubic SnSe compound with multiple valleys and inherent low thermal conductivity is considered to be a promising thermoelectric compound. In this study, heterogeneous Pb atoms were strategically introduced into the lattice of cubic SnSe matrix, synergistically adjusting the thermoelectric transport properties of samples by optimizing hole carrier concentration ( n ) and suppressing thermal conductivity ( κ tot ). When the doping content reached 0.08 mol, the peak power factor (PF) at 300 K increased to 20.00 μW·cm –1 ·K –2 . The growing internal microstrain induced by the differences in atomic size strengthened the phonon scattering and effectively reduced the lattice thermal conductivity ( κ L ). With further decoupling of the electrical and thermal transport properties, a peak thermoelectric figure of merit ( ZT ) of 0.82 and an average ZT of 0.42 (300–750 K) were achieved in the samples doped with 0.10 mol Pb. These findings highlight the effectiveness of the selected dopants and demonstrate their synergy in improving the performance of thermoelectric materials. Graphical
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JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
·
2025
·
IF 3.1
Cui Yumeng,Wu Weihong,Meng Chunhui,Wu Pengxin,Jiao Yunhong,Qu Hongqiang
Polyester/cotton (T/C) blend fabrics are highly flammable due to the particular “scaffolding effect,” which limits its application scope. In this work, a polyacrylic acid (PAA) flame-retardant coating was prepared by combining a conventional intumescent flame retardants (IFRs) with a hybrid of graphene and metallic tin (GnPSn) prepared by mechanical forces. The flame retardants were deposited onto the T/C blend fabric by surface coating method, and its flame-retardant and thermal properties were studied. The combined characterization of scanning electron microscopy (SEM) and mapping proved that the coating system had been successfully processed to the surface of T/C blend fabrics. The results of limiting oxygen index (LOI) showed that PER-1/GnPSn-4 polyester/cotton blends obtained good flame-retardant properties with LOI of 25.0%. The thermal stability and combustion behavior of the blends before and after impregnation were evaluated by thermogravimetric (TG) and cone calorimetry test (CCT), and the peak heat release rate of PER-1/GnPSn-4 polyester/cotton blends was 51.2% lower than that of Pure Emulsion T/C blend fabrics, with an increase in residual carbon by 16.39%, which indicated that the addition of GnPSn altered the thermal degradation process and suppressed the combustion of the T/C blend fabrics, heat and smoke release during the combustion process. In addition, the results of thermogravimetric-Fourier transform infrared (TG-IR) spectroscopy of the samples showed that the intumescent composite coatings were flame retardant to T/C blended fabrics in both condensed phase and gas phase.
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WASTE MANAGEMENT
·
2025
·
IF 7.1
Shun Dai,Shiyu Wang,Haochen Wang,Fengyin Zhou,Simin Xu,Yongxin Wu,Muya Cai,Xinyi Li,Shuaibo Gao,Wei Li,Bowen Deng,Dihua Wang,Huayi Yin
Current methods for recovering copper (Cu), lead (Pb) and tin (Sn) from photovoltaic (PV) solder ribbons usually completely dissolve or melt the solder ribbons and then recover each element, which are reagent-intensive and generate large amounts of secondary waste. Herein, we develop an environmentally sustainable method for recovering Cu, Pb and Sn from End-of-Life (EoL) PV solder ribbons. First, above 95 % of pure Cu is recovered in the acetic acid (HAc) and hydrogen peroxide mixture (H 2 O 2 ), by which the Pb-Sn coating is selectively dissolved and separated from the Cu substrate. Second, the small portion of dissolved Cu 2+ is separated by solvent extraction (e.g., Lix84-I) and then is recovered by the electrolysis with a recovery rate of 99 %. Third, the dissolved Pb is recovered by electrochemical deposition with a recovery rate of 99 %, and Sn is recovered as Sn/SnO 2 powders. The selective recovery relies on the core–shell structure of ribbons and the different dissolution rates of Cu, Pb and Sn in the HAc, and the use of the HAc instead of HCl and HNO 3 leads to a cleaner process. Overall, the green recovery of solder ribbons will contribute to resource conservation and the circular economy of the EoL photovoltaic modules (PVMs).
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Small Methods
·
2025
·
IF 9.1
Maoqiang Shen,Yang Liu,Xinyue Gao,Xuesen Liu,Yanhao Zhao,Linrui Hou,Changzhou Yuan
Typical shuttle effect of lithium polysulfides (LiPSs) and slow kinetics of redox reactions seriously hinder the potential application of lithium–sulfur batteries (LSBs). Herein, a titanium based ternary accordion heterostructure (i.e., TiC-TiN-TiO 2 ) is first fabricated through an acid-assisted eutectoid reaction of Ti 3 CN MXene obtained via efficiently gas-etching of Ti 3 AlCN MAX. The in situ crystal reconstruction not only creates functional sur/interface configuration but generates built-in electric field (BIEF) at the crystal interfaces, which induce interfacial charge redistribution and accelerate electronic/ionic conductions of the whole heterostructures. Besides, the well-defined functions of conductive TiC, adsorptive TiO 2 , and catalytic TiN enable the efficient fixation and conversion of LiPSs. Accordingly, LSBs assembled with the TiC-TiN-TiO 2 modified separators demonstrate a remarkable reversible capacity of 1185 mAh g −1 at 0.5 C, and an outstanding capacity retention of 778 mAh g −1 after 500 cycles with a decay rate of 0.078% per cycle. Moreover, excellent rate capability (838 mAh g −1 at 5 C) and superior cycling stability with high sulfur loading (3.7 mg cm −2 ) and low electrolyte/sulfur ratio (6.0 µL mg −1 ) are also achieved. More significantly, the eutectoid reaction of solid solution MXenes it devised here provides an innovative avenue to design functional hierarchical heterostructures for high-performance LSBs and beyond.
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Biomaterials Advances
·
2025
·
IF 6
Xingjian Yan,Han Dong,Liyin Gao,Mengqi Liu,Chunxi Wang
Prostate cancer (PCa) is commonly considered a “cold tumor” due to its immunosuppressive microenvironment. Cold tumors are typically identified by the absence of T-cell infiltration within the tumor, while other immune populations and myeloid cells can be observed in these tumors. To achieve light-heat combined immunotherapy checkpoint inhibitor treatment for castration-resistant prostate cancer, we aimed to transforming “cold tumors” into “hot tumors”. We designed and synthesized a two-dimensional material, selenium-doped black phosphorus (BP), to enhance the photothermal conversion efficiency, and formed Se@BPNSs by liquid-phase exfoliation. To address the issue of enhanced permeability and retention effect, and to achieve efficient targeting, we coated the Se@BPNSs with RM-1 cell membrane derived from mouse prostate cancer cells. By injecting a certain dose of Se@BPNSs into the tumor and irradiating with a 808 nm laser, the Se@BPNSs converted light energy into heat to kill tumor cells at high temperatures while releasing antigens captured by dendritic cells. In addition, we combined the immunotherapy checkpoint inhibitor anti-PD1 to enhance the immune response and promote immune cell infiltration. The successful preparation of Se@BPNSs was verified through material characterization, cell-level and animal-level experiments, and the antitumor effect was meanwhile verified, which further provided guidance for prostate cancer treatment by photothermal synergistic immunotherapy.
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