APPLIED SURFACE SCIENCE
·
2026
·
IF 6.9
Yifei Huang,Hongliang Dai,Hongye Bai,Weiqiang Fan
Biomass materials as an abundant renewable resource could replace traditional fossil fuels and non-renewable materials, providing a new solution to achieve sustainable development. In this paper, Ce-modified Co(OH) 2 /Cu 2 O composite catalysts were prepared by an electrodeposition method, and the CoOOH/CuOOH dual active sites were successfully obtained through an electrochemical reconfiguration strategy, and the experimental results showed that the incorporation of Ce induced the formation of high-valent Co and Cu species, which improved the activity of electrocatalytic HMF oxidation. At 0.55 V vs Hg/HgO, the HMF conversion reached 100%, the FDCA yield was 95.04% and the Faraday efficiency was up to 98.47%. These results confirm the effectiveness of Ce-based non-precious metal catalysts in electrochemical reconstruction strategies and demonstrate their potential application in the high-value conversion of biomass derivatives. This finding not only provides a solid research basis for the development of highly efficient catalysts, but is also expected to promote the development of related technological fields.
✓ 已验证
产品关联
DOI
高影响因子
RSC Advances
·
2016
·Vol. 6
·期 82
·78852-78857
·
IF 3.289
Shunkai Lu,Shuzhen Ma,Hui Wang,Mingwang Shao
This paper describes a two-step method for preparing the bi-functional cobalt sulfide/noble metal CoS2/Au (CoS/Au) composite with excellent peroxidase-like activity and surface enhanced Raman scattering (SERS) performance. CoS2 (CoS) was firstly synthesized via a hydrothermal method and subsequently used to coat Au nanoparticles. Both of them have high-efficiency peroxidase-like activity to decompose H2O2 into hydroxyl radicals, which can degrade organic pollutants into small non-toxic molecules. Furthermore, these composites also exhibit SERS performance using rhodamine 6G as a molecular probe. Therefore, the bi-functional composites can be applied in degrading R6G molecules as a valid catalyst while the degradation process can be monitored quantitatively in real time using Raman spectroscopy.
✓ 已验证
DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
·
2018
·Vol. 29
·期 16
·13925-13930
·
IF 2.324
Li Tianjing,Shi Qingle
In this paper, explain a new relationships between Bi 3+ content, the phase crystal, microstructure and conductivity for Sm and Bi co-doped Ce 0.8− x Sm 0.2 Bi x O 1.9−1/2 x ( x = 0, 0.05, 0.1, 0.15, 0.2) electrolytes prepared by co-precipitation method. The XRD patterns showed that this compounds exhibit a fluorite-type cubic structure after the samples calcined at 700 °C for 4 h and the cell volumes of increased when the Bi content increased. In addition, for the samples sintered at 1400 °C for 4 h, the Bi doping improves the relative density, the grain size and the average thermal expansion coefficient (TEC). More in details, the relative density and TEC increase with the Bi content. Form the AC impedance spectroscopy measurements, the conductivity of the sintered samples is found to improve with the increasing of Bi content (for x ≤ 0.15), which is ascribed to the increasing of the number of oxygen ion vacancies and the increase in the unit cell volume. However, the conductivity decreases when the Bi content is further increased (0.15 < x ≤ 0.2), which is ascribed the reduction of the number of free oxygen vacancies. The highest conductivity at 800 °C is 5.6 × 10 −2 S/cm and the activation energy is 0.83 eV for Ce 0.65 Sm 0.2 Bi 0.15 O 1.825 , indicating that this would be a promising electrolyte for the intermediate temperature-solid oxide fuel cell applications.
研究领域:
材料科学
·
无机非金属材料
·
固态离子学
·
能源材料
·
燃料电池
✓ 已验证
DOI
高影响因子
JOURNAL OF POWER SOURCES
·
2017
·
IF 6.395
H.R. Jiang,W. Shyy,M.C. Wu,L. Wei,T.S. Zhao
The potential of B 4 C as a metal-free catalyst for vanadium redox reactions is investigated by first-principles calculations. Results show that the central carbon atom of B 4 C can act as a highly active reaction site for redox reactions , due primarily to the abundant unpaired electrons around it. The catalytic effect is then verified experimentally by cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS) tests, both of which demonstrate that B 4 C nanoparticles can enhance the kinetics for both V 2+ /V 3+ and VO 2+ /VO 2 + redox reactions, indicating a bi-functional effect. The B 4 C-nanoparticle-modified graphite felt electrodes are finally prepared and tested in vanadium redox flow batteries (VRFBs). It is shown that the batteries with the prepared electrodes exhibit energy efficiencies of 88.9% and 80.0% at the current densities of 80 and 160 mA cm −2 , which are 16.6% and 18.8% higher than those with the original graphite felt electrodes. With a further increase in current densities to 240 and 320 mA cm −2 , the batteries can still maintain energy efficiencies of 72.0% and 63.8%, respectively. All these results show that the B 4 C-nanoparticle-modified graphite felt electrode outperforms existing metal-free catalyst modified electrodes , and thus can be promising electrodes for VRFBs.
研究领域:
电化学
·
能源材料
·
催化化学
·
储能技术
·
材料科学
✓ 已验证
DOI
高影响因子
INORGANIC CHEMISTRY
·
2026
·Vol. 65
·期 30
·17706-17716
·
IF 4.6
Jin Cheng-An,Huang Zhiling,Zhang Lianyang,Meng Yue,Xia Guanghua,Xia Shengjie
Photocatalytic nitrogen reduction to ammonia intrinsically
relies
on the synergistic activation of both N 2 and H 2 O molecules by the catalyst. However, achieving simultaneous and
efficient activation of these two species on a single catalyst surface
remains a formidable challenge, constrained by poor N 2 adsorption
and the high dissociation energy barrier of the N≡N triple
bond. To address this, a vacancy engineering strategy was adopted
to design and fabricate a Bi 2 WO 6 photocatalyst
featuring both bismuth and oxygen dual vacancies (V Bi+O -BWO). The oxygen vacancies trap photogenerated electrons for N 2 activation, while bismuth vacancies enhance H 2 O adsorption and facilitate proton generation. Through this synergistic
effect, the photocatalytic nitrogen reduction performance was significantly
enhanced. Experimental results show that V Bi+O -BWO achieves
an ammonia production rate of 113.14 μmol·g –1 ·h –1 , a 4.9-fold enhancement over the unmodified
catalyst. N 2 -TPD results demonstrate that the dual vacancies
effectively enhance N 2 chemisorption, facilitating subsequent
activation. In situ FTIR confirms that N 2 adsorbs and converts
on Bi 2 WO 6 via a distal pathway. This study provides
new insights into the development of high-efficiency dual-vacancy
photocatalytic materials.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Journal of Water Process Engineering
·
2026
·
IF 6.6
Xiaoyan He,Yanling Liang,Xiaosu Cheng,Hui Fan,Zhentong Zhu,Yuxuan Zhang,Yihao Guo,Jing Li,Yuanyuan Lu,Zhiqiang Wang,Xiaoquan Lu
PPy/SrTiO 3 -Bi composites let biomass hydrogel evaporators combine photothermal conversion with photocatalytic degradation. • Adsorption interception coupled with photocatalytic degradation gives the evaporator excellent VOC removal efficiency. • The evaporator achieves a VOC removal efficiency of up to 99.3% under one-sun irradiation. • Under the same illumination condition, a high-water evaporation rate of 3.13 kg m −2 h −1 is also obtained. • This evaporator exhibits excellent salt resistance and water purification capabilities. Solar-driven interfacial evaporation technology has become an important approach to addressing the global water crisis due to its advantages such as being green and sustainable. However, due to the inherent volatility of volatile organic compounds (VOCs), the technology still faces severe challenges in removing VOCs from distilled water. In this paper, a biomass-based hydrogel evaporator (PSBH) integrating solar steam generation and photocatalytic degradation was constructed by immobilizing polypyrrole (PPy)-coated SrTiO 3 -Bi composites into an acrylamide (AM)/Kapok fibres composite hydrogel network via a one-pot method. This evaporator can effectively remove phenol (a typical VOC) that is volatilized along with water vapor, while achieving efficient solar-powered water evaporation. The introduction of kapok fibres endows AM hydrogels with superior structural stability and water transport efficiency, while reducing the energy required for the evaporation process, thereby enhancing the overall water transport and evaporation performance. PPy-coated SrTiO 3 -Bi composites achieve photothermal-photocatalytic synergy. The introduction of semimetal Bi nanoparticles enhances visible-light absorption and promotes spatial charge separation through its dual functional role as an electron trap and a plasmonic hot-electron donor, imparting excellent photocatalytic activity and photothermal conversion efficiency. Under 1 sun illumination, the interfacial evaporation rate can reach 3.13 kg m −2 h −1 . Meanwhile, the removal efficiency of a typical VOC (phenol) reaches 99.3%, enabling the simultaneous achievement of highly efficient seawater desalination and VOC removal. It is worth noting that the evaporation rate of this evaporator can still reach 2.22 kg m −2 h −1 in 20 wt% salt solution concentration, showing excellent environmental tolerance. This design offers a feasible strategy for multifunctional photothermal materials and a novel solution to VOCs pollution in solar interfacial evaporation. Download: Download high-res image (209KB) Download: Download full-size image
✓ 已验证
DOI
高影响因子
Crystals
·
2026
·Vol. 16
·期 4
·264
·
IF 2.9
Tengbo Chen,Yuxi Yu,Haoran Gao,Ronggui Zhang,Zhong Luo,Shuyuan Zhao
Bi-doped rare-earth iron garnet (Bi:RIG) single crystals are the core of optical isolators, and demand for them is surging due to the development of artificial intelligence (AI) technology. In this work, bismuth-doped terbium iron garnet (Bi:TbIG) single crystals with a composition of Bi0.86Tb2.14Fe5O12and a size of 37 mm were successfully grown by the top-seeded solution growth (TSSG) method using a lead-containing flux system. These crystals exhibited a regular rhombic dodecahedron morphology enclosed by the {110} plane, and a growth rate of 0.018 mm/h perpendicular to the {110} planes. Systematic characterizations revealed that the crystals exhibited good compositional homogeneity, with no obvious Fe, Tb and Bi segregation from center to edge. Rocking curve tests presented a full width at half maximum of 172 arcsec. X-ray photoelectron spectroscopy (XPS) results demonstrated that Fe exists exclusively in the +3 valence state without detectable Fe2+, whereas Tb is present in the +4 valence state. In addition, O was lattice O2−, without obvious defects. Magneto-optical tests indicated that the uncoated TSSG-grown Bi:TbIG crystals had 71% transmittance in the 1200~1600 nm waveband, and a Faraday rotation coefficient of 0.132°/μm at 1310 nm. The 11 × 11 mm samples exhibited an extinction ratio stably above 40 dB. The 349 μm thick samples meet the application requirements of miniaturized optical isolators. This study verifies the feasibility of TSSG for growing Bi:TbIG single crystals, offering a new technical route for Bi:TbIG growth with potential value for practical application.
✓ 已验证
DOI
高影响因子
ACTA MATERIALIA
·
2026
·
IF 10.7
Wansen Ma,Xinyu Wang,Lingyan Zhou,Qian Li,Xuewei Lv,Jie Dang
Ruthenium exhibits catalytic activity comparable to that of iridium and platinum, yet at a substantially lower cost. However, its practical application is hindered by poor stability under acidic electrolyte conditions. Herein, we report a dynamic self-healing mechanism mediated by sustainable electron compensation in a LaRuCoMnVO x high-entropy oxide, which leads to a remarkable enhancement in catalytic durability. Furthermore, by optimizing the local electronic coordination environment, this strategy promotes the evolution of single active sites into dual active sites and reduces the adsorption energy. Benefiting from these synergistic effects, the catalyst demonstrates outstanding acidic oxygen evolution reaction (OER) and hydrogen evolution reaction (HER) performance, with overpotentials as low as 175 and 41 mV (at 10 mA cm -2 ), respectively. When integrated into a proton exchange membrane water electrolyzer (PEMWE), the system requires only 1.65 V to achieve a high current density of 1 A cm -2 and exhibits a minimal degradation rate of 12.9 μV h -1 . Both experimental and computational analyses confirm that sustainable electron donation to the Ru sites underpins the dynamic stability of the catalyst at ampere-level current densities. This electron compensation-driven self-healing strategy effectively eliminates the reliance on iridium and platinum, while simultaneously enhancing both activity and stability. Download: Download high-res image (472KB) Download: Download full-size image
✓ 已验证
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2026
·
IF 9.6
Xiaowei Wu,Le Hu,Ting Zhao,Xingyi Hu,Pu Hu,Junlong Feng,Chaoqun Shang
A BTO-TiO x /Bi-NC interlayer enables synergistic Li + regulation and guidance. • Li||Li cells achieve 800 h stable cycling in high-voltage ester electrolyte. • Li− S batteries retain 466.53 mAh g −1 after 400 cycles at 3C in ether electrolyte. The practical application of Li metal anodes is hindered by uncontrollable dendrite growth, which stems from the unstable solid electrolyte interphase (SEI) and heterogeneous Li + flux. Herein, we report a porous Bi 4 Ti 3 O 12 (BTO) decorated with in-situ generated titanium oxide and bismuth nanocrystals (denoted as BTO-TiO x /Bi-NC) composite, as a multifunctional interfacial layer to address these challenges. The integrated TiO x ensures high ionic conductivity, while Bi-NC effectively regulate Li + flux, thereby guiding uniform Li + plating/stripping. Moreover, it is hypothesized that the reversible Li 3 Bi alloying reaction during cycling could provide additional nucleation sites, potentially contributing to enhanced Li deposition homogeneity. Benefiting from this rational design, BTO-TiO x /Bi-NC promises the symmetric Li||Li cell exhibiting remarkable stability for 800 h at 1 mA cm −2 in high-voltage ester-based electrolyte. When coupled with an S cathode, the full Li S battery maintains a discharge capacity of 466.53 mAh g −1 after 400 cycles at 3C in ether-based electrolyte, demonstrating excellent long-term cyclability. This work proposes a promising strategy for stabilizing Li metal anodes via combined Li + flux regulation and alloying chemistry, paving the way for durable high-energy-density batteries. Download: Download high-res image (145KB) Download: Download full-size image
✓ 已验证
DOI
PubMed
高影响因子
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
·
2026
·Vol. 46
·期 14
·118532
·
IF 6.3
Jingdan Lei,Xiaoyun Yang,Mengxiang Wu,Xiwei Zhang,Di Yuan,Huijuan Geng,Chong Han,Zhaoyang Han,Zhenjie Tang,Chao Wang
Mg 3 (Sb, Bi) 2 is a promising mid- to low- temperature thermoelectric material owing to its earth-abundant composition. However, its performance is limited by low intrinsic carrier concentration and the inherent trade-off among thermoelectric parameters. Herein, large-grain sized Mg 3.01 Sb 1.3 Bi 0.69 Te 0.01 Ho 0.07 are fabricated via melting method at 1423 K using a tantalum-sealing technique. A high peak zT of 1.6 at 700 K is realized, along with a peak power factor of 24 μW cm −1 K −2 and a low κ L of 0.41 W m −1 K −1 . The superior performance originates from synergistic manipulation of electron and phonon transport. Ho doping optimizes carrier concentration up to 7.2 × 10 19 cm −3 due to its small electronegativity difference with Mg, while the large grain ensures high carrier mobility. Simultaneously, atomic-scale alloy disorder suppresses phonon propagation, resulting in a substantial reduction in lattice thermal conductivity. This work highlights the great potential of synergistic transport engineering for high-performance Mg 3 (Sb, Bi) 2 -based thermoelectric materials.
✓ 已验证
DOI
高影响因子
ACTA MATERIALIA
·
2026
·
IF 10.7
Zhengniu Pan,Sijing Zhu,Yi Wang,Zhen Fan,Jisheng Liang,Shiyuan Zhao,Jun-Liang Chen,Zhongwei Zhang,Zhixiang Zhang,Qi Zhou,Jie Gao,Huaizhou Zhao,Lei Miao
The n-type Mg 3+δ (Sb,Bi) 2 ‐based system has recently emerged as a breakthrough class of thermoelectric (TE) materials, drawing considerable interest for its eco‐friendly composition and potential to replace conventional commercial counterparts. However, the precise regulation of grain boundaries in Mg-based materials—akin to wielding an accurate scalpel—so as to extremely optimize thermoelectric performance and device properties remains ill-defined. In this study, the incorporation of Ga into the Mg 3 (Sb,Bi) 2 matrix via high‐energy ball milling (HBM) and spark plasma sintering (SPS) yielded an ultralow lattice thermal conductivity of 0.41 W m -1 K -1 at 300 K, a superior figure of merit ( ZT ) exceeding 1.84 at 673 K, and a high average ZT ( ZT avg ) of 1.55 across 300—773 K. The lattice thermal conductivity of Ga‐modified Mg 3+δ (Sb,Bi) 2 is markedly reduced over the entire temperature range, primarily due to the enhanced Kapitza thermal resistivity (ρ Kapitza ) resulting from the introduction of a liquid‐like phase at grain boundaries (GBs), which strengthens phonon scattering. while, Ohmic-like metal–semiconductor junctions form at the interfaces between the Ga/Bi secondary phases and the Mg 3+δ (Sb,Bi) 2 matrix lead to superior power factor. The high performance of Ga‐Mg 3+δ (Sb,Bi) 2 enabled a two‐pair module based on Mg 3.2 Ga 0.04 Sb 1.5 Bi 0.49 Te 0.01 / MgAgSb to achieve a conversion efficiency ( η ) of ∼6.0% at ΔT = 300 K. As a result, this work demonstrates significant theoretical and practical value in areas such as thermal management and thermoelectric material design.
✓ 已验证
产品关联
DOI
高影响因子
CERAMICS INTERNATIONAL
·
2025
·
IF 5.6
Guanyu Zhu,Feifeng Huang,Yuqing Yan,Shilong Zhao,Huanping Wang,Degang Deng,Shiqing Xu
Developing anti-counterfeiting materials that are easy to identify and difficult to imitate, as well as temperature-sensitive materials with high sensitivity and a wide detection range, remains a significant challenge—particularly for luminescent materials that integrate both functionalities. Herein, a series of CaSb 2 O 6 : Bi, Mn phosphors were synthesized by high-temperature solid-phase method, integrating multi-color dynamic anti-counterfeiting capability with multi-mode optical temperature sensing. By doping Bi 3+ ions, the blue light emission of Bi 3+ ions completely overlaps with the self-activated emission of the CaSb 2 O 6 host, greatly enhancing the blue light emission of the host. In addition, when Mn 2+ ions are added, due to the incomplete oxidation of Mn 2+ during the preparation process, both Mn 2+ and Mn 4+ ions coexist within the host. Under UV excitation, the CaSb 2 O 6 : Bi, Mn phosphors exhibit multi-color emission of cyan-green, blue, purple, and magenta, accompanied by persistent green emission originating from Mn 2+ ions, offering a potential approach for dynamic anti-counterfeiting applications. The temperature sensitivity characteristics of the phosphors were investigated based on the fluorescence intensity ratio technique, and a maximum relative sensitivity of 1.56 % K −1 was obtained at 383 K. Taking advantage of these material properties, an integrated dynamic anti-counterfeiting and encryption system was engineered, and a fiber-optic temperature sensing platform was established to monitor the real-time temperature of an electric hand warmer.
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）