SEPARATION AND PURIFICATION TECHNOLOGY
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2025
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IF 9
Chi Zhang,Shuaixiao Gao,Ye Wang,Xin Zhang,Hongqiang Chu,Huajie Huang,Fanrun Huang,Hainan Wu,Xinyan Xiong
Hydraulic concrete structures, frequently exposed to water environments, are highly susceptible to surface contamination by inorganic solid particles, organic chemical pollutants, and microorganisms like algae. In response, a novel metal-free fluorine-free coating was developed by combining red phosphorus/hydrothermal carbonization carbon (RP/HTCC) and polydimethylsiloxane (PDMS) with photocatalytic activity and superhydrophobicity to enable superior self-cleaning for hydraulic concrete. The proper integration of HTCC into RP (RP/HTCC-2) introduced a micro-nanostructured surface, improved light absorption, optimized band energy alignment, and enhanced photogenerated charge separation and migration. Correspondingly, the RP/HTCC-2@PDMS coating exhibited good self-cleaning for organic pollutant degradation on concrete surfaces, achieving 97.6 % for Rhodamine B (RhB) and 82.5 % for tetracycline hydrochloride (TCH) in water within 4-h visible light irradiation. Meanwhile, it showed remarkable superhydrophobicity, with a high water contact angle (WCA) of 157 ± 0.5° and a low water sliding angle (WSA) of 6 ± 0.5°, driving efficient self-cleaning against powder dusts. Besides, RP/HTCC-2@PDMS demonstrated robust durability against high-intensity long-term UV exposure and water-jet impact. Furthermore, the synergistic effect of photocatalytic activity and superhydrophobicity were further evident in the coating’s algal antifouling and inhibition. After 12-h visible light irradiation, the RP/HTCC-2@PDMS coating achieved a 69.8 % reduction in Microcystis aeruginosa in water. Detailed analysis of the inhibition mechanism revealed significant changes in superoxide dismutase (SOD) activity, catalase (CAT) activity, malondialdehyde (MDA) content, phycobiliprotein (PB) content, and algae organic matters (AOM). Collectively, these findings are believed to provide valuable insights on the development of green sustainable self-cleaning coating and the advanced synergistic mechanisms driving their effective and robust self-cleaning.
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COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
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2025
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IF 5.4
Hao Huang,Yueyue Yu,Qian Geng,Tianhao Zhang,Mingqiang Yan,Dong Feng,Delong Xie
This study presents the design and synthesis of a novel phosphorus-containing ionic liquid flame retardant, DV, which serves as both a surfactant and a synergistic flame retardant. DV self-assembled onto the surface of BP nanosheets through electrostatic interactions, forming a polymerized ionic liquid coating via radical initiation. Simultaneously, DOPO-derived groups were incorporated into the polymer matrix by ionic bonding with imidazole groups, further enhancing the structural integrity of the composites. The resulting composite was used to develop EVA-based materials with outstanding mechanical properties and flame retardancy. At a low loading of 3 wt% DVBP, the synergistic effect of phosphorus and nitrogen, combined with the two-dimensional structure of BP, facilitated char formation at elevated temperatures, effectively inhibiting the transfer of oxygen and flammable substances. Additionally, the gas-phase flame-retardant mechanism reduced the release of pyrolysis products. The composite achieved a V-0 rating in the UL-94 test, a 22.3 % reduction in peak heat release rate (PHRR), and an 8.1 % increase in tensile strength, highlighting its potential for application in cables used in critical transport equipment.
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INORGANIC CHEMISTRY
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2024
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IF 4.3
Shao-Jun Lu,Ling Tang,Zechen Xiao,Mo Zhang,Wei Guo,Mingwu Tan,Yan Wan,Fang-Xing Xiao,Yangming Lin
Black phosphorus (BP), a promising two-dimensional (2D) layered semiconductor material, has gained enormous attention due to its impressive properties over the past several years. Although plenty of methods have been developed to synthesize high-quality BP, most of the currently available BP materials still suffer from unsatisfactory crystallization, purity, and stability in air, hindering their practical application. A facile approach to synthesizing ultrahigh-quality single-crystal BP is of significance to shed light on the nature of 2D semiconductor materials and their massive application. In this work, we present the facile and efficient circulating vapor growth approach to growing bulk single-crystal BP. The as-grown BP material features high crystallinity and ultrahigh purity (higher than 99.999 at %), exceeding those of all the previously reported and some commercially available BP crystals. It also maintains excellent stability in air and water after 15 consecutive days of test. Moreover, the as-synthesized BP material features good thermal stability, oxidation resistance, and excellent electrical properties, as well. This study provides a new approach for the fabrication of ultrahigh-quality BP material and thus promotes its application.
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iScience
·
2025
·Vol. 28
·期 9
·113294
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IF 4.1
Kangfan Xie,Guoshuai Fu,Ruiqi Xu,Weimi Ding,Guowei Yang,Peng Yu,Jiling Li,Pu Liu
Scalable water electrolysis requires mass-producible electrocatalysts for efficient hydrogen evolution reaction (HER) at high current densities. We developed a pulsed laser fusion method to synthesize Pd-CuInP 2 S 6 composites on graphene or MXene Ti 3 C 2 nanosheets. These catalysts exhibit enhanced charge transfer and abundant active sites, outperforming commercial Pt/C in both acidic (0.5 M H 2 SO 4 ) and alkaline (1 M KOH) electrolytes. Density functional theory (DFT) analysis reveals synergistic HER enhancement via interstitial H and substituted In atoms. The optimized catalysts achieve remarkable overpotentials of −388 and −384 mV at 1,000 mA cm −2 (acid), with Tafel slopes of 61 and 67 mV dec −1 , while demonstrating −455 and −450 mV overpotentials (alkaline) with 152 and 150 mV dec −1 Tafel slopes, respectively. They maintain exceptional stability over 10,000 CV cycles and extended operation at −500 mA cm −2 , significantly surpassing Pt/C durability. This laser fabrication strategy enables scalable production of efficient, stable low-precious-metal catalysts for industrial HER. Chemical energy; Chemical engineering; Electrochemical engineering
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JOURNAL OF APPLIED POLYMER SCIENCE
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2024
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IF 2.7
Kai Hu,Zhuo Wang,Hu Wang,Kanshe Li
A method for constructing a water-soluble supramolecular polymer responsive to silver ion (Ag + ) is achieved through the host–guest interaction between γ-cyclodextrin (γ-CD) and bis(phenyl ethenyl)pyridine guest monomer. Upon the addition of silver hexafluorophosphate (AgPF 6 ) into the solution of the supramolecular polymer, precipitates of silver bromide (AgBr) and bis(phenyl ethenyl)pyridine monomer-PF 6 were formed in the solution, leaving only the host molecule γ-CD. Therefore, the supramolecular polymer can be dissociated by AgPF 6 . Here, we provide a new strategy to fabricate water-soluble supramolecular polymer with metal ion responsiveness. This method is expected to be applied in aqueous environments, to enrich the field of supramolecular chemistry and to promote the development of advanced materials with excellent properties.
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Journal of Water Process Engineering
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2025
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IF 6.7
Yuanyuan Wang,Chong Huang,Haixu Wu,Jeng Yi Chong,Ping Zhang
Mineral scaling poses major operational challenges in water-transporting systems across various industries, leading to substantial economic losses globally. Scale inhibitors are specialty chemical agents with functional groups to prevent or interfere with scale formation. Traditionally, scale inhibitors are introduced into water-transporting systems through continuous injection. However, this approach is limited by its short protection duration and reliance on continuous inhibitor injection, which results in high capital and operating costs, as well as increased chemical waste. To address this issue, this study synthesized cement-based controlled release beads (CRBs) loaded with 1-hydroxyethylidene-1,1-diphosphonic acid (HEDP) scale inhibitor for scale control. The release performance of HEDP from the CRBs was systematically evaluated through static batch and dynamic column experiments. Quartz crystal microbalance with dissipation monitoring (QCM-D) and turbidity tests confirmed the effectiveness of the CRBs in inhibiting BaSO 4 scale formation. Batch experiments demonstrated that increasing CRB size and lowering the temperature could reduce the release rate of HEDP while prolonging the release duration, without changing the total amount of HEDP released. Dynamic column experiments revealed that higher temperatures resulted in higher peak concentrations of HEDP and earlier peak occurrences, while increasing flow velocity shifted the release curves slightly backward and shortened the overall release time. The presence of Ca 2+ and HCO 3 − ions had no noticeable effect on the dynamic release behavior. These findings deepen our understanding of the release mechanisms of scale inhibitors from cement-based CRBs and highlight their potential as an innovative and sustainable solution for long-term scaling control in water-transporting systems.
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ACS Catalysis
·
2025
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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
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2025
·Vol. 26
·期 16
·7751
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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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ADVANCED MATERIALS
·
2025
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IF 26.8
Dong Li,Bing-Xuan Zhu,Wen He,Pei-Yu Huang,Qian Zhang,Wen-Bo Duan,Liang Zhen,Yang Li,Jing-Kai Qin,Cheng-Yan Xu
Lamed by the Shockley–Queisser limit, complex device architectures and material selection, traditional photovoltaic (PV) technologies based on heterojunctions are difficult to implement reconfigurable PV generation with high power efficiency. Here, the universal bulk ionicphotovoltaic (BIPV) effect in 2D quaternary metal thio(seleno)phosphates (QMTPs) crystals is reported, and demonstrates the giant photocurrent generation with excellent reconfigurability. The programmable ion migration driven by an electric field not only leads to the in-plane electric potential gradient, but also contributes to the reversible modulation of crystal inversion asymmetry. The formation of reconfigurable in-plane homojunction in 2D CuBiP 2 Se 6 channel results into the pronounced conductance rectification with a high ratio exceeding 10 3 , contributing to an extremely large short-circuit PV current density of 1.6 A cm −2 under 532 nm illumination, among the highest values of state-of-the-art 2D PV devices. More importantly, the electric potential gradient and degree of centrosymmetric of 2D QMTPs channel can be precisely controlled by the direction and magnitude of programming voltage pulses, which enables the linearly programmed BIPV current generation with an ideal nonlinearity factor of 0.09. The photoelectric conversion relying on the BIPV effect breaks the integration bottleneck of reconfigurability and power efficiency, providing a transformative strategy for developing next-generation PV devices.
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JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2025
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IF 9.7
Xin Jin,Haili Lin,Xuemei Jia,Shuang Li,Xinyue Li,Qianlong Wang,Shifu Chen,Jing Cao
Red phosphorus (RP) has recently attracted considerable attention in the field of photocatalysis owing to its remarkable optical properties. However, the rapid recombination of photogenerated carriers presents a substantial challenge for the application of RP in the selective photocatalytic oxidation of benzyl alcohol. Herein, a series of nickel sulfide (NiS) materials with different crystal phase, including α-NiS, β-NiS and α-β-NiS, were employed to modulate the interfacial charge transfer in RP for photocatalytic oxidation of benzyl alcohol (BA) coupled with H 2 evolution. A comprehensive array of experimental and theoretical analyses has demonstrated that the Ohmic junction formed between β-NiS and RP is more conducive to enhancing the separation and migration of carriers in comparison to the Schottky junction formed between α-NiS and RP. As expected, the β-NiS/RP exhibited superior photocatalytic performance, achieving higher yields of benzaldehyde (6.79 μmol g −1 h −1 ) and H 2 (7.16 μmol g −1 h −1 ) compared to α-NiS/RP, α-β-NiS(glo)/RP and α-β-NiS(fla)/RP. The observed enhancement in photocatalytic activity can primarily be attributed to the distinct carrier separation mechanisms, specifically the Ohmic contact in the β-NiS/RP system and the Schottky junction in the α-NiS/RP system. This study introduces an effective strategy for optimizing carrier migration mechanisms in composite catalysts via crystal phase modulation, thereby providing valuable insights into the design of highly efficient photocatalysts for energy and environmental applications.
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Materials Today Physics
·
2025
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IF 9.7
Chengyan Liu,Qi Zhou,Haisong Liu,Weiwei Li,Peishan Huang,Mengfei Wang,Wenxiang Chen,Mingqiang Hu,Jun-Liang Chen,Shulin Pan,Dong Hu,Song He,Tomohiro Sato,Haiqiao Wei,Lei Miao
SiGe-based thermoelectric (TE) materials exhibit exceptional thermal stability and environmental compatibility for medium-to-high-temperature applications, but their TE performance is limited by inherently high thermal conductivity. This study demonstrates a novel strategy to overcome this limitation by introducing transition metal carbide. Among five investigated candidates (TiC, ZrC, HfC, NbC, TaC), ZrC incorporation proves most effective, achieving a peak zT of ∼1.3 at 873 K and an average zT ( zT avg ) of 0.72 across 323–873 K in n-type SiGe-based materials, representing an obvious improvement over prior reports. This improvement is mainly attributed to a substantial reduction in lattice thermal conductivity ( κ l ), decreasing from 1.98 W m −1 K −1 –1.75 W m −1 K −1 at 873 K compared to the pristine alloy. Phonon dispersion analysis reveals that the extremely low κ l stems from two factors: specific phononic characteristics of ZrC, including a small optical-optical phonon gap, weak acoustic phonon bunching, and low-frequency (∼2.9 THz) acoustic-optical coupling in comparison with other carbides; and a significant phonon spectrum mismatch at the ZrC/SiGe interface. This work advances TE material optimization through targeted dual-phonon-scattering engineering.
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JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2025
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IF 9.7
Shuang Li,Haili Lin,Xuemei Jia,Qianlong Wang,Haoyu Zhang,Yujie Zhang,Xiaoxin Feng,Shifu Chen,Jing Cao
Coupling solar-powered CO 2 conversion with pollutant removal via Z -scheme heterojunctions offers a promising strategy to simultaneously address energy and environmental challenges. However, achieving efficient charge separation and optimizing active sites for both reduction and oxidation reactions are still significant challenges. Herein, a Z -scheme heterojunction photocatalyst with spatially separated dual active sites (hydroxyl-functionalized red phosphorus (HRP) and amino-functionalized graphitic carbon nitride (ACN)) was developed to enable the concurrent photoreduction of CO 2 and photooxidation of tetracycline (TC). The optimized heterojunction, incorporating 1.25 wt% HRP, achieved a 4.96-fold increase in CO yield and 1.09-fold improvement in TC degradation compared with a red phosphorus/graphitic carbon nitride (RP/CN) system without surface functionalization. Density functional theory calculations and experimental analyses confirmed a Z -scheme charge transfer mechanism wherein hydroxyl groups facilitated hole-mediated TC oxidation and amino groups promoted electron-driven CO 2 reduction. The 1.25HRP/ACN photocatalyst demonstrated an electron transfer efficiency of 87.8 %, significantly surpassing the 64.9 % observed for 1.25RP/CN, highlighting the synergistic benefits of dual-site engineering. This study provides detailed insights into dual-functionalized Z -scheme heterojunctions with spatially separated redox-active sites, advancing the design of integrated systems for solar fuel generation and environmental remediation.
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