APPLIED CATALYSIS B-ENVIRONMENTAL
·
2024
·
IF 20.2
Rui Zhai,Zhenyu Wang,Mengyue Gu,Haoliang Liu,Xuewen Zhao,Jiangfan Li,Yaqiong Su,Yonghong Cheng,Shaobin Wang,Jinying Zhang
Selective photoreduction of CO 2 into ethylene is desirable but stays challenging due to easy desorption of primary reduction product CO. Herein, violet phosphorene nanosheets (VPNS) are for the first time demonstrated to be effective CO 2 photoreduction catalysts to yield ethylene. Photoelectron was found to transfer from VPNS to co-catalyst Ag and aggregated on VPNS-Ag interface to enhance CO 2 and CO* adsorption, and further lower the reduction energy barrier to yield ethylene, which was confirmed by in-situ diffuse reflectance infrared Fourier-transform, CO stripping voltammetry, CO reduction experiments, and density functional theory calculations. CO 2 is reduced into COOH* and automatically transformed into CO* on VPNS-Ag surface, then protonized into CHO* with a low barrier of 0.64 eV and automatically coupled into COCHO* to yield ethylene. Only ethylene was detected from CO 2 photoreduction with a yield of 10.34 μmol g −1 h −1 without any hole-sacrificial agent, much higher than most reported photocatalysts.
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Small
·
2024
·Vol. 20
·期 46
·2403360
·
IF 13
Liangshutong Zhang,Yupu Zhang,Shuchang Xu,Ruowen Zhao,Wei Zhai,Jianyuan Wang
Ultraviolet A (UVA) radiation causes various irreversible damages to human skin, so the research about UVA-specific sensing device is urgent. 2D black phosphorus (BP) is used in many photosensors due to its advantages of high carrier mobility and tunable bandgap, but its application for UVA-specific photosensor is not reported. Here, a MXene-BP/Zinc oxide (ZnO) hybrid structure with lamellar-spherical interfaces like finger lime fruit is prepared by the layer-by-layer assembly (LLA) method, and p-n junctions are constructed between BP and ZnO with the Ti 3 C 2 T x electrode, showing excellent photoelectric performance. Density functional theory (DFT) calculations demonstrate that the enhanced performance is attributed to the rapid separation of photogenerated carriers in the presence of a built-in electric field at interface. Furthermore, a flexible MXene-BP/ZnO based UVA-specific photosensor is prepared, which shows a specific response to UVA as high as 7 mA W −1 and excellent mechanical stability, maintaining 98.46% response after 100 bending cycles. In particular, the integrated anti-UVA skin protection device shows excellent UVA-specific identification and wireless transmission capability, which can provide timely UVA exposure information and skin protection warning for the visually impaired. This work demonstrates a new approach for further developments of advanced photoelectric sensing technology toward improving people's skin health protection.
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JOURNAL OF ALLOYS AND COMPOUNDS
·
2024
·
IF 5.8
Yuting Li,Jiaming Song,Juanjuan Yang,Zhuo Wang,Guoshuai Ban,Huaxiong Gao,Honggang Ye,Feng Teng,Xin Zhao
As a sustainable technology that can be utilized for degrading organic pollutants, photocatalysis becomes more and more important in the environment pollution control. One crucial factor that influences the degradation process is the design of photocatalyst. In this study, we utilized a simple hydrothermal method, liquid exfoliation and mechanical mixture to synthesize a novel S-scheme heterojunction based on BiPO 4 /CdPSe 3 . It was found that the optimal molar ratio BiPO 4 : CdPSe 3 = 2: 1 (noted as B 2 C) gave rise to an efficient removal of rhodamine B up to 97.5 % after 30 min dark reaction and 60 min light exposure. This composite also possesses the degradation capacity for other antibiotics and inorganic pollutant. The capture experiments showed that superoxide radicals played the dominant role in the degradation process. Besides, hydroxyl radicals and holes were also important active species. The high photocatalytic degradation performance of B 2 C could be attributed to the increased specific surface area with more active sites, enhanced light absorption in the visible region, and, more importantly, the special S-scheme heterostructure for high photogenerated charge carrier separation, synergistically improved the photocatalyst degradation efficiency. This work provides a new perspective for designing high-efficient photocatalysts applicable in multiple organic and inorganic pollutants degradation.
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Surfaces and Interfaces
·
2024
·
IF 5.7
Pengfei Zhu,Mengrong Geng,Shuang Qin,Heyang Cao,Zhenhong He,Xinhua Gao,Chuanyi Wang
The conversion of CO 2 into chemical products or fuels of great value always remains an outstanding challenge. Here, we report a heterojunction Fe@C/Ni 2 P composite catalyst obtained by preparing MIL-100(Fe) derived Fe@C confined Ni 2 P nanoparticles, which is applied to photothermal catalytic CO 2 hydrogenation with H 2 O. Without adding any sacrificial agents or co-catalysts, the optimal Fe@C/Ni 2 P sample shows higher yields for CO 2 -to-C 2 H 6 and CO 2 -to-CO yield of 5.83 μmol g −1 h −1 and 179.9 μmol g −1 h −1 than that of pristine Fe@C and Ni 2 P, respectively. The experimental results indicated that the obtained Fe@C/Ni 2 P can act as catalytic sites to adsorb, activate, and convert CO 2 under low-intensity LED light irradiation (420 nm) with a temperature of 200 ℃. The physical structure, photochemical properties and energy band structure of the Fe@C/Ni 2 P composite catalysts were investigated by XRD, XPS, FT-IR, TEM, BET, respectively. Furthermore, the reaction pathway of Fe@C/Ni 2 P photothermal catalytic CO 2 hydrogenation with H 2 O to C2 products and CO were systematically analyzed by in situ infrared spectroscopy (DRIFTS).
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ELECTROCHIMICA ACTA
·
2024
·
IF 5.5
Kun Zhao,Hongtao Wang,Yanqun Shao,Zhiguang Yang,Zhe Chen,Kongfa Chen,Yunxiang Chen,Deyuan Lin
Phosphates are a kind of promising electrode materials because they can provide numerous cavities and several reaction sites to be favored for storing anions and cations. However, the widespread application of phosphates are limited by their intrinsically low electronic conductivity. RuO 2 /hydrated RuO 2 exhibits high conductivity and excellent electrochemical properties. Reducing its dosage and increasing its specific surface area are the research concerns. Combining less RuO 2 to Nickel phosphate (NiP) is expected to improve the electrochemical performance. RuO 2 -modified NiP (NiP-RuO 2 ) electrode material is synthesized by a one-step hydrothermal reaction and its structural morphology and capacitive properties are investigated. The results indicate that NiP-RuO 2 electrode consists of hydrated RuO 2 and Ni 11 (HPO 3 ) 8 (OH) 6 , and exhibits excellent battery-type electrochemical supercapacitor performance with a specific capacity of 878.06 C/g at 1 A/g. According to density functional theory (DFT) analysis, Ru-doped Ni 11 (HPO 3 ) 8 (OH) 6 has a narrower forbidden band width and higher conductivity than Ni 11 (HPO 3 ) 8 (OH) 6 . Furthermore, the asymmetric supercapacitor (ASC) assembled by NiP-RuO 2 /NF and activated carbon (AC) electrode achieves a high energy density (43.58 Wh/kg) at a power density of 923.47 W/kg. When two ASC devices are connected in series, ten light-emitting diodes (LEDs) can be illuminated for ten minutes.
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ADVANCED MATERIALS
·
2024
·Vol. 36
·期 39
·2404772
·
IF 27.4
Ning Sun,Zhichuan Zheng,Zhuangzhuang Lai,Junjie Wang,Peng Du,Tianping Ying,Haifeng Wang,Jianchun Xu,Runze Yu,Zhiwei Hu,Chih-Wen Pao,Wei-Hsiang Huang,Ke Bi,Ming Lei,Kai Huang
While high-entropy alloys, high-entropy oxides, and high-entropy hydroxides, are advanced as a novel frontier in electrocatalytic oxygen evolution, their inherent activity deficiency poses a major challenge. To achieve the unlimited goal to tailor the structure–activity relationship in multicomponent systems, entropy-driven composition engineering presents substantial potential, by fabricating high-entropy anion-regulated transition metal compounds as sophisticated oxygen evolution reaction electrocatalysts. Herein, a versatile 2D high-entropy metal phosphorus trisulfide is developed as a promising and adjustable platform. Leveraging the multiple electron couplings and d–p orbital hybridizations induced by the cocktail effect, the exceptional oxygen evolution catalytic activity is disclosed upon van der Waals material (MnFeCoNiZn)PS 3 , exhibiting an impressively low overpotential of 240 mV at a current density of 10 mA cm −2 , a minimal Tafel slope of 32 mV dec −1 , and negligible degradation under varying current densities for over 96 h. Density functional theory calculations further offer insights into the correlation between orbital hybridization and catalytic performance within high-entropy systems, underscoring the contribution of active phosphorus centers on the substrate to performance enhancements. Moreover, by achieving electron redistribution to optimize the electron coordination environment, this work presents an effective strategy for advanced catalysts in energy-related applications.
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高影响因子
CHINESE JOURNAL OF CATALYSIS
·
2025
·
IF 17.7
Shuang Li,Haili Lin,Xuemei Jia,Xin Jin,Qianlong Wang,Xinyue Li,Shifu Chen,Jing Cao
Although bimetallic phosphide cocatalysts have attracted considerable interest in photocatalysis research owing to their advantageous thermodynamic characteristics, superstable and efficient cocatalysts have rarely been produced through the modulation of their structure and composition. In this study, a series of bimetallic nickel-iron phosphide (Ni x Fe 2– x P, where 0 < x < 2) cocatalysts with controllable structures and overpotentials were designed by adjusting the atomic ratio of Ni/Fe onto nonmetallic elemental red phosphorus (RP) for the photocatalytic selective oxidation of benzyl alcohol (BA) coupled with hydrogen production. The catalysts exhibited an outstanding photocatalytic activity for benzaldehyde and a high H 2 yield. The RP regulated by bimetallic phosphide cocatalysts (Ni x Fe 2– x P) demonstrated higher photocatalytic oxidation-reduction activity than that regulated by monometallic phosphide cocatalysts (Ni 2 P and Fe 2 P). In particular, the RP regulated by Ni 1.25 Fe 0.75 P exhibited the best photocatalytic performance. In addition, experimental and theoretical calculations further illustrated that Ni 1.25 Fe 0.75 P, with the optimized electronic structure, possessed good electrical conductivity and provided strong adsorption and abundant active sites, thereby accelerating electron migration and lowering the reaction energy barrier of RP. This finding offers valuable insights into the rational design of highly effective cocatalysts aimed at optimizing the photocatalytic activity of composite photocatalysts.
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Journal of Materials Chemistry A
·
2024
·
IF 10.7
Liangyuan Qi,Wei Cai,Jiajun Li,Tianyang Cui,Liang Chen,Jing Gao,Bin Fei,Yuan Hu,Lei Song,Zhou Gui,Weiyi Xing
In the context of low-carbon and energy conservation initiatives, smart thermal management textiles for the human body, which operate without energy consumption and pollution, are gaining increased attention. However, conformal to human skin, ensuring the fire safety of these textiles remains a critical challenge for their practical application. Meanwhile, complicated and changed environments demand a high self-adaptation for designed textiles. This study introduces a dual-mode textile designed for freely switching radiative cooling (RC) and solar heating (SH). The textile is created by applying a high-white flame retardant and black phosphorus to both sides using a convenient scrape coating method. The combination of the cooling layer (90.0% solar reflectance and 95.9% infrared emissivity) and the heating layer (80% solar absorptivity) provides a comfortable thermal environment for the human body. Furthermore, the Janus coating, consisting of advanced flame retardants, synergistically enhances the textile's fire safety, confirmed by a limiting oxygen index of 28.0%, a reduction of 40.1% in peak value of heat release, and self-extinguishing properties. This research presents a simple and available approach to creating dual-mode smart textiles for maintaining a comfortable micro-environment towards changed seasons and weather, significantly contributing to the development of fire-safe personal thermal management technology.
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ADVANCED FUNCTIONAL MATERIALS
·
2024
·Vol. 34
·期 37
·2402217
·
IF 18.5
Ren Yan,Zhaoqing Sun,Wanyu Du,Nian Liu,Qizeng Sun,Peng Li,Fei Liang,Yangzhi Zhu,Wei Huang,Hai-Dong Yu
Chronic wounds are inherently vulnerable to external mechanical contact owing to their impaired physiological states. Accidental touching may lead to secondary damage to delicate wound tissues, including deterioration of tissue and inflammation, thereby prolonging the healing process. In addition, patients encounter nociceptive sensations, indicative of physical discomfort and potential distress. However, the traditional dressings for chronic wounds fail to convey adequate perceptual information to prevent mechanical trauma. An electrostatic-induction-enabled anti-touching hydrogel dressing (EAHD) is proposed, which promotes wound healing and reduces touching-induced injuries. The EAHD combines a proximity sensor and a pro-healing hydrogel. The proximity sensor can detect approaching objects, enabling remote perception. More importantly, EAHD and a wireless alarm system are integrated to warn against the detected potential hazards such as unintentional touching. Meanwhile, the EAHD significantly accelerates wound healing in preclinical diabetic mice, ≈38% faster than that of the control group. This study proposes a novel strategy for multifunctional wound dressing that promotes wound healing and prevents accidental touching-induced secondary damage to the wound.
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CHEMICAL ENGINEERING JOURNAL
·
2024
·
IF 13.3
Zhizi Ma,Meng Yuan,Ziyong Cheng,Zhuang Yang,Ling Yang,Bin Liu,Yulong Bian,Abdulaziz A. Al Kheraif,Ping'an Ma,Jun Lin
Due to the shallow penetration depth of light in biological tissues, the effectiveness of photothermal therapy (PTT) in deep-seated tumors is limited. Conversely, ultrasonic wave has excellent tissue penetration depth. Using ultrasound (US) as an exogenous physical stimulus to trigger tumors thermotherapy is a promising alternative for deep-seated tumors to supersede conventional PTT. Here, we realized a mild sonothermal therapy (STT) using biodegradable red phosphorus nanoparticles (RP NPs) as sonothermal agents. Quite obvious sonothermal conversion of RP NPs is remarkable under low intensity US irradiation, with the temperature rise from 30 to 47 °C at tumor site. In terms of potential mechanism, under US excitation, the internal electrons of RP NPs undergo transition and release the energy by electrons and holes recombination process. This elicits the atom thermal vibration and raises the temperature around the RP NPs. Additionally, US irradiation can stimulate RP NPs to produce singlet oxygen ( 1 O 2 ) and reduce intracellular energy levels that leads to downregulation of the heat shock proteins (HSPs) expression, providing an “escort” to mild STT. This work offers a new paradigm for the strategies of STT enhanced by sonodynamic effect.
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SEPARATION AND PURIFICATION TECHNOLOGY
·
2025
·
IF 9
Jiangnan Huang,Jiali Huang,Xugang Shu,Xingan Cheng,Hao Yu,Yonghai Cao,Zhuofeng Hu,Jimmy C. Yu
Ocean acidification from the uptake of CO 2 and antibiotic pollution from a consequence of inshore mariculture are two serious threats to marine ecosystems. In this work, a novelty oxygen-doping carbon nitride (O-CN) photocatalyst are designed for the release of CO 2 and degradation of a targeted antibiotic (ofloxacin, OFL) in acidified seawater. Notably, this photocatalytic system can take advantage of ocean acidification as more CO 3 •- radicals were produced in the seawater. The catalyst could degrade OFL rapidly ( k = 0.039 min −1 ) in the presence of CO 3 2– and HCO 3 – , which derive from the dissolved CO 2 in the seawater, much higher than that of pristine CN ( k = 0.013 min −1 ). Mechanism study revealed that the existence of CO 3 2– and HCO 3 – would facilitate the generation of new N-C-O (O1) groups on the O-CN surface. These O1 groups are the active sites for the formation of •OH radicals that can oxidize OFL and release CO 2 . This investigation offers a novel strategy for alleviating two environmental threats simultaneously.
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INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
·
2024
·
IF 8.1
Zhaojing Han,Hao Zhao,Ci Peng,Chuanting Fan,Gang Wang,Jie Zhang,Zhiyong Tang
For efficient and stable large-scale water electrolysis, practical industrial electrodes should meet the following characteristics: high activity, structural stability , and fast bubble removal. Here we report a structured electrode (NiS–Co–NiP) prepared via 3D printing of nickel-based substrate and subsequent electrodeposition for the hydrogen evolution reaction (HER). With unique 3D nanosheets , the NiS–Co–NiP electrode exhibits large electrochemical surface area (ECSA), strong hydrophilicity, high mechanical strength and electrical conductivity , delivering outstanding HER activity. It requires low overpotentials of 134 mV and 169 mV to achieve the current densities of 100 mA cm −2 and 300 mA cm −2 , respectively. Moreover, rational design of the NiS–Co–NiP electrode in pyramidal geometry facilitates directional bubble transport and electrolyte flow, resulting in superior stability of 350 h at a current density of 150 mA cm −2 . This work demonstrates a new approach for manufacturing binder-free structured electrode of excellent HER performance at high current densities.
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