Scientific Reports
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2024
·Vol. 14
·期 1
·1-14
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IF 3.8
Shen Cong,Yan Jing,Ai Zhipeng,Huang Hongbing,Mo Lin,Liang Bangzhi,Zhang ChangHui
Adding corrosion inhibitors is considered to be a cost-effective way to inhibit metal corrosion. In this study, we report the synthesis of a bi-mannich base corrosion inhibitor (BMT) with an impressive inhibition efficiency on carbon steel in H 2 S and HCl co-existing solution. At the BMT concentration of 9 ppm, the inhibition efficiency (η) of 96.9%, 97.6% and 98.0% were determined by weight loss, potentiodynamic polarization and electrochemical impedance spectroscopy, respectively. The adsorption of BMT on the carbon steel surface follows the Langmuir adsorption isotherm, and the calculated free energy indicates that the adsorption is a spontaneous process. This research also delves into understanding the adsorption behavior and corrosion inhibition mechanism of BMT on carbon steel surfaces through quantum chemistry calculations. The results of this study provide guidance for the application of BMT as a corrosion inhibitor in sour and acid environments.
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INORGANIC CHEMISTRY COMMUNICATIONS
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2024
·
IF 4.4
Yongyu Li,Yaping Wang,Zhengkang Zhu,Shenshen Shi,Xinyi Ma,Jianjun Chen,Haijie Sun,Lingxia Chen
Ternary-component BiOBr/Bi/BiOI composites were successfully prepared by a one-step hydrothermal method under the reducing effect of ascorbic acid. Ascorbic acid not only converts Bi 3+ to Bi 0 as a reducing agent, but also inhibits the growth of grains and controls the morphology, resulting in a multilayered hierarchical floral structure of the BiOBr/Bi/BiOI composites formed by the assembly of nanosheets dotted with nanoparticles on the surface. The composite has highest photocurrent density, lowest photogenerated electron-hole recombination rate and high specific surface area, and exhibits excellent degradation performance for both single and mixed pollutant systems of tetracycline, rhodamine B and methylene blue. h + is the most dominant reactive oxygen species in the photodegradation process, while ·OH and ·O 2 − provide weak auxiliary degradation. A Z-scheme photocatalytic degradation mechanism of BiOBr/Bi/BiOI with excellent photocatalytic performance was proposed.
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JOURNAL OF ELECTROANALYTICAL CHEMISTRY
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2024
·
IF 4.1
Zhongyun Yang,Xiaojia Zhang,Kexin Huang,Muhammad Waqas,Xinglan Peng,Limin Wang,Xiaotian Liu,Dujuan Huang,Qiulan Huang,Du-Hong Chen,Youjun Fan,Wei Chen
Fe/N/C is recognized promising catalyst for oxygen reduction reaction (ORR), playing a pivotal role in advancing the commercialization of proton exchange membrane fuel cells. However, an inadequate ORR activity hinders its potential applications. Here, we present the preparation of M–Nx–C (M = Fe, Zn) bi-active sites for promoting ORR. By the pyrolysis of benzimidazole salts, a porous coin-like iron-zinc-based nitrogen-doped carbon materials (FeZn-NC) catalyst was synthesized with abundant active sites. X-ray photoelectron spectroscopy and transmission electron microscopy characterizations indicated the successful doping of Zn and Fe within the carbon framework. Electrochemical measurements demonstrated great positive half-wave potential (0.90 V), high limiting current density (5.15 mA·cm −2 ), excellent methanol resistance, and good stability of FeZn-NC, compared to commercial Pt/C catalysts. Furthermore, an investigation into correlation between doping content of Fe and the ORR performance was carried out. As an cathode catalyst of zinc-air battery, FeZn-NC exhibited more significant advantages, including a high open-circuit voltage (1.54 V), enhanced power density (199.89 mW·cm −2 ), good specific capacity (771.9 mAh g Zn −1 ), and enhanced stability compared to Pt/C. By presenting an approach for the controlled synthesis of metal-doped carbon materials, this work establishes the groundwork for potential applications in catalytic fields, as demonstrated by the prepared FeZn-NC.
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Advanced Materials Interfaces
·
2018
·Vol. 5
·期 10
·1701574
·
IF 4.834
Peng Guan,Hongye Bai,Chunfa Li,Yilin Ge,Dongbo Xu,Biyi Chen,Teng Xia,Weiqiang Fan,Weidong Shi
Overcoming one of most challenging limitations of bare TiO 2 with large bandgap can be achieved by rational design and fabrication of heterostructures. Multicomponent sulfides with a nature of tunable band structure can be a good alternative to decorating TiO 2 , but there remains a major trade-off between the high efficiency and the long-term durability, so the stability issue must be addressed upon the use of sulfides. Here, an effective strategy is demonstrated with Bi-doped AgIn 5 S 8 (Bi-AgIn 5 S 8 ) decorated TiO 2 photoanode, where twofold enhancement of the photocurrent is achieved. More importantly, it is the first time to integrate polydopamine passivation layer and AgIn 5 S 8 for simultaneously enhancing the solar conversion efficiency and stability. The incident photon-to-current conversion efficiency value is tuned up to 45% (0.4 V vs Ag/AgCl), and the photocurrent density can keep for 90.8% after 5 h. Corresponding hydrogen evolution rate has increased to 8.6 µmol h −1 , which is three times higher than that of bare TiO 2 .
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VACUUM
·
2024
·
IF 3.8
Kaiting Yang,Xiongtao Lv,Jingwen Meng,Huiqing Wang,Lin Guo,Xin Li,Fengyun Su,Qing Lan,Zhengdao Li,Wei Wang,Yuwei Guo,Xiaoli Jin,Haiquan Xie
Photothermal catalytic reduction of CO 2 into high value-added C 2 hydrocarbon products is a promising method for efficient CO 2 conversion. However, current photocatalysts still encounter obstacles including limited photoabsorption range, rapid recombination of photogenerated carriers , and inadequate surface active sites. Herein, Bi 4 O 5 Br 2 co-modified with oxygen vacancy (OV) and metal bismuth (Bi) (Bi 4 O 5 Br 2 -OV@Bi) has been prepared to optimize these crucial issues. Bi 4 O 5 Br 2 -OV@Bi delivers a remarkably improvement in CO 2 photothermal conversion, reflecting by the notable increase in C 1 (CO and CH 4 ) and newly generated C 2 (C 2 H 4 and C 2 H 6 ) products compared to pristine Bi 4 O 5 Br 2 . In situ diffuse reflectance infrared Fourier transform spectroscopy (DRIFTS) spectrometry reveals that OC−COH* intermediate promotes the C–C coupling for produce C 2 hydrocarbons. This study strengthens the understanding of metal modification and defect engineering for forming C 2 hydrocarbons on bismuth-based photocatalysts .
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SENSORS AND ACTUATORS B-CHEMICAL
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2024
·
IF 8
Jiamei Xiao,Zhuoting Yu,Yuan Tian,Mingze Zeng,Borui Su,Jie Ding,Chengheng Wu,Dan Wei,Jing Sun,Hongsong Fan
Nerve conduit is an alternative strategy in peripheral nerve injuries (PNI) treatment both for neural signals recording and therapeutic electrical stimulation (ES). Most conventional conduits suffer from surgical suturing and lacking real-time insights of nerve recovery, as well as failing in integrating therapy strategies. Herein, we introduce a bi-layered hydrogel conduit with microneedles (BHCM), in which poly (N-isopropylacrylamide) (PNIPAm)-incorporated polyethyleneimine (PEI) forms the outer layer for conductivity and electro-driven drug loading and release, whereas PNIPAm/alginate/tannic acid hydrogel (PNIPAm/SA/TA) forms the inner layer to ensure biocompatible mechanics and strong tissue adhesion. Meanwhile, the differences in doping manipulated different critical solution temperature (LCST) and swelling between the double layers determine the self-curling performance. Therefore, the BHCM responds to temperature and self-curls into conduit to wrap and bind to sciatic nerve, avoiding the complicated suturing and enhancing the interfacial electrical transmission. By puncturing the epineurium, the microneedles strongly enhance the electrochemical performance, and synergistically facilitate controllable drug delivery as well as electrical stimulation and recording efficiency. Further, BHCM is demonstrated to regulate macrophage polarization from M1 to M2 through electrically stimulated Rhein release, thereby reducing inflammation and facilitating diabetic PNI repair. The present design aims to improve biosafety, surgical simplicity to realize overall recovery of injured nerves, making it a promising candidate for advanced peripheral nerve repair strategies.
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Asian Journal of Pharmaceutical Sciences
·
2024
·
IF 10.7
Ting Yang,Zihan Liu,Zixuan Fu,Xiaojie Zhang,Yongjin Cao,Qiangwei Liang,Jiale Miao,Hao Yang,Tong Zhang,Jing Hei,Weiqing Ni,Yanhua Liu
Ferroptosis can serve as a potent strategy for regulating cell death via lipid peroxidation and the imbalance of the antioxidant system resulting from iron accumulation in triple-negative breast cancer (TNBC) therapy. However, the ferroptosis accompanied with down-regulation of glutathione peroxidase 4 (GPX4) lead to CD36-mediated tumor-infiltrating CD8 + T cells uptaking fatty acids, resulting in the negative action on immunotherapeutic efficacy. Herein, the albumin nanoparticles, abbreviated as LHS NPs, were designed by co-assembly of hemin, linoleic acid-cystamine, and a CD36 inhibitor sulfosuccinimide oleate, to bi-directionally manipulated ferroptosis in tumor and CD8 + T cells for TNBC therapy. LHS NPs exerted more efficient reactive oxygen species generation, glutathione depletion and malondialdehyde production by the combinatory strategy of classical and non-classical ferroptosis modes, which amplified the positive action on ferroptosis in tumor cells. Meanwhile, LHS manipulated the negative action of ferroptosis by inhibiting the CD36 mediated-lipid peroxidation in CD8 + T cells, thereby activating the immunotherapeutic efficacy with the improvements on induction of immunogenic cell death, proliferation of CD4 + CD8 + T cells and natural killer cells, alleviation immunosuppressive regulatory T cells and myeloid-derived suppressor cells, and repolarization of the M2- to M1-phenotype tumor-associated macrophages. Thus, LHS NPs demonstrated an improved antitumor efficacy in suppressing the tumor growth and lung metastasis of 4T1-tumor mice. Our work gives novel insights for the bi-directionally manipulating ferroptosis in tumor and CD8 + T cells on TNBC chemoimmunotherapy.
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Journal of Materials Chemistry C
·
2024
·Vol. 12
·期 27
·10096-10103
·
IF 5.7
Shaohua Li,Yi Zhang,Zihan Song,Zida Zheng,Xiaowei Zhang,Xueyun Liu
Luminescent solar concentrators (LSCs) serving as potential energy-conversion units have received great attention in building-integrated photovoltaics (BIPVs). However, the main challenge for BIPV-used LSCs is to maintain a high transparency while improving its photo-electric performance. In this work, we fabricate a flexible LSC by incorporating Bi-doped Cs2Na0.6Ag0.4InCl6 double perovskite (DP) QDs into polydimethylsiloxane (PDMS). The as-synthesized QDs show a large Stokes shift and broadband orange emission originating from the recombination between the localized states of [BiCl6] and [AgCl6] octahedra. The resultant LSC based on the above QDs exhibits a high internal quantum efficiency of up to 34.42%, which is relatively higher than that of other reported QD-based LSCs. More attractively, the average visible transmittance of the LSC remains 91.55%. By attaching a Si PV cell along the edge of the LSC, the optimal power conversion efficiency (PCE) and optical efficiency (ηopt) of the LSCs of 2.56% and 2.57%, respectively, can be reached under the irradiation of a solar simulator. In addition, the LSC presents good photostability after 80 h of xenon lamp irradiation. Therefore, we anticipate that the lead-free DP QD-based LSCs may provide a promising direction for high-efficiency transparent LSCs.
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JOURNAL OF LUMINESCENCE
·
2024
·
IF 3.3
X.Z. Zheng,Z.Y. Ye,Y.F. Zhang,L. Yue,Y.F. Lei,W.B. Dai
With the growing concern about energy consumption, white light-emitting diodes( w LEDs), as the fourth generation of lighting sources, are highly scrutinized by researchers. A series of Bi 3+ /Tb 3+ /Sm 3+ (co)doped BaY 2 Si 3 O 10 phosphors were prepared by traditional solid-state method, and the phase purity was analyzed by X-ray diffraction. In this work, Bi 3+ /Tb 3+ /Sm 3+ theoretically occupies the Ba/Y sites, and this conjecture is also proved by spectral analysis. Under near ultraviolet ( n UV) light excitation, Bi 3+ /Tb 3+ /Sm 3+ is respectively used as the blue ( 3 P 1 → 1 S 0 )/green ( 5 D 4 → 7 F j )/red ( 4 G 5/2 → 6 H j ) luminescence center. Due to the energy transfer (ET) efficiency between Bi 3+ /Sm 3+ is not ideal, Tb 3+ is introduced as a bridge to improve the ET efficiency of the whole system to achieve spectral tunability and application in w LEDs. And at different excitation wavelengths, Bi 3+ emits a wide range of blue to cyan light because it occupies two cation sites. We selected a proper excitation wavelength and obtained an emission spectrum covering the whole visible region. The CIE color coordinates (0.3487, 0.3313), the correlated color temperature (CCT, 4773.61 K), quantum efficiency (QE, 47.62 %), and thermal stability ( T 50 = 537 K) of BaY 2 Si 3 O 10 : Bi 3+ /Tb 3+ /Sm 3+ are discussed in depth, Lu 3+ was used instead of Y 3+ to improve the thermal stability of BYS. Its excellent luminescence performance indicates that this phosphor has potential applications in n UV w LEDs.
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Inorganic Chemistry Frontiers
·
2025
·
IF 6.4
Lei Wu,Xudong Leng,Bao Jiang,Xueyin Fu,Yi Huang,Xue Yu,Qun Jing,Zhaohui Chen
By leveraging second-harmonic generation (SHG) capabilities, ultraviolet (UV) nonlinear optical (NLO) crystals can efficiently produce UV coherent light and are essential components for advancing UV solid-state laser systems. Herein, two new bismuth phosphates, Rb1.32Bi3.56P2O11 (I) and K1.08Bi3.64P2O11 (II), were synthesized via a high-temperature melt method. Of them, Rb1.32Bi3.56P2O11 exhibits a significant phase-matching SHG response (2.8 × KDP) and large birefringence (0.062 @ 532 nm, 0.053@1064 nm), along with an expanded UV transmission window. Moreover, theoretical analyses revealed that the optimized optical polarizability of Rb1.32Bi3.56P2O11 primarily arises from the cooperative effects of the one-dimensional (1D) polycationic Bi(2)Bi(2)×Bi(1)Bi(1)×Bi(1)Bi(1)×Bi(2)Bi(2) ribbons and [PO4] tetrahedron. We believe the work will provide a valuable strategy to design UV NLO materials with good performances.
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JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2025
·
IF 9.7
Xinyu Gu,Huiyu Sun,Nannan Zhang,Jun Yu,Jie Li,Changqing Ye,Yukou Du
One-dimensional (1D) Pd-based nanowire materials, characterized by high aspect ratios and exposed high-index crystal surfaces, are widely developed in the field of direct fuel cells. However, their synthesis methods are often not universal and necessitate demanding conditions, including high temperatures and metal templates, leading to resource consumption. In this study, we present a simple and universal one-step method for synthesizing PdM (Sb, Ir, and Bi) nanowire networks (NNWs) at room temperature. Leveraging their structural advantages and the synergistic effects between bimetals, PdM NNWs demonstrate exceptional electrocatalytic performance, exhibiting higher mass and specific activities as well as enhanced durability compared to Pd/C for the ethylene glycol and glycerol oxidation reactions. Notably, PdSb NNWs excelled in electrochemical tests, achieving the highest mass activities of 7.55 and 5.59 A mg −1 for the ethylene glycol oxidation reaction (EGOR) and glycerol oxidation reaction (GOR), respectively. Additionally, due to the semi-metallic properties of Sb, which can flexibly modify the chemical environment of Pd, the PdSb NNWs exhibited superior antitoxicity and a significantly lower decay of current density across three consecutive chronoamperometry (CA) tests. This research advances the synthesis of palladium-based nanostructures, providing impetus for the design of highly efficient electrocatalysts in the realm of direct alcohol fuel cells.
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Journal of Water Process Engineering
·
2025
·
IF 6.7
Ying Xu,Shuili Yu,Zhiqiang Fan,Xingli Ji,Cong Huang,Zheng Xu,Rui Liu,Chao Jiang
Bromate (BrO 3 − ), a carcinogenic and regulated disinfection by-product, poses a persistent challenge to drinking water safety due to its high solubility and chemical stability. In this work, a noble-metal-free Fe 3 O 4 /TiO 2 /Bi photocatalyst was successfully prepared and subsequently applied for BrO 3 − reduction under ultraviolet light. The ternary composite design enables cooperative functionality among the components, where Fe 3 O 4 facilitates charge transfer and magnetic separability, Bi 0 acts as a hole scavenger, and TiO 2 serves as the primary photoactive material. Characterization results confirmed the successful formation of the heterostructure with enhanced charge separation properties. The composite containing 5 wt% Bi exhibited the highest activity, achieving 99 % BrO 3 − removal within 25 min at pH 7.0, with a pseudo-first-order rate constant of 0.185 min −1 , which is 11.8 times that of pure TiO 2 . The enhanced photocatalytic performance is ascribed to the synergistic effect between Bi, Fe 3 O 4 and TiO 2 . Bi 0 nanoparticles functioned as hole acceptors to suppress recombination, while Fe 3 O 4 facilitated electron transport and provided magnetic separability. The photocatalyst retained high activity over five consecutive cycles with negligible metal leaching and performance loss. In addition, its effectiveness was verified in tap water containing typical inorganic ions and dissolved organic matter, demonstrating moderate inhibition but maintaining BrO 3 − reduction capability. This study provides a cost-effective, magnetically recoverable, and noble-metal-free photocatalyst with improved charge separation efficiency and recovery feasibility, offering practical potential for BrO 3 − mitigation in drinking water treatment.
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