JOURNAL OF COORDINATION CHEMISTRY
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2017
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IF 1.795
Yong-Qiang Chen,Yuan Tian,Dao-Li An
A new coordination framework, [Co2(L)2(bpy)2(H2O)]n (1) (H2L = (4-phenyl)-2,6-bis(4-carboxyphenyl)pyridine and bpy = 2,2′-bipyridine), has been prepared and structurally characterized. Complex 1 shows an interesting bi-chain substructure bridged by coordinated water molecules, which is further extended into a three-dimensional (3-D) supramolecular structure by π–π stacking interactions. Moreover, the magnetic properties and photocatalytic activity for degradation of methyl orange have been investigated.
研究领域:
配位化学
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材料科学
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物理化学
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高影响因子
CERAMICS INTERNATIONAL
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2025
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IF 5.6
Rizwan Ahmed Malik,Muhammad Habib,Hussain Alrobei
Lead-free dielectric ceramic capacitors have attracted substantial attention for high pulsed power technologies, but achieving a large recoverable energy storage density ( W rec ) with high efficiency ( η ) and good thermal stability remains a bottleneck. In this work, we address this challenge in (Bi,Na)TiO 3 -based relaxor ferroelectric through a composition design strategy that induces local structure heterogeneity. This heterogeneity is created from the local random field/stress of the chemical modifiers due to different valence states and ionic sizes, which promotes the formation of polar nano-regions (PNRs). These PNRs minimize the energy barrier, resulting in an excellent energy storage performance, W rec of 8.53 J/cm 3 and η of 80.7 %. Moreover, the material exhibits breakthrough thermal stability, maintaining a W rec ≈ 3.41 ± 0.40 J/cm 3 and η ≈ 82.2 ± 8.2 % over a wide temperature range up to 240 °C. This study provides a path for designing advanced relaxor ferroelectric dielectric ceramic capacitors for energy storage applications.
研究领域:
材料科学
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功能陶瓷
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介电材料
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能源存储
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固态物理
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JOURNAL OF HAZARDOUS MATERIALS
·
2019
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IF 7.65
Li Song,Yuefeng Feng,Changqing Zhu,Fuqiang Liu,Aimin Li
Cr(VI) and Cd(II) are typical heavy metal ions and their co-removal is significant. Nitrogen-doped, bi-functional, and biomass-based composites (CP-BA) were successfully applied for efficient and synergistic removal of Cr(VI) and Cd(II). The mutual promotion ratios of adsorption capacity by Cr(VI) and Cd(II) were 161.32 % and 14.13 %, respectively. In addition, all coexisting inorganic anions could extremely promote the removal of Cd(II) with the best promotion ratio upon phosphate ions as high as 80.00 %. The following co-removal mechanisms were deeply revealed: (1) Cr(VI) combined with protonated imine groups could weaken the electrostatic repulsion between CP-BA and Cd(II) by electrostatic shielding, and further promoted the coordination of Cd(II) with hydroxyl, carboxyl and neutral imine groups. (2) Cd(II) which were coordinated to neutral imine groups could form cation bridges, and thus promoted the interaction with Cr(VI) because of the electrostatic attraction. Moreover, the removal capacity for Cr(VI) and Cd(II) did not display obvious reduction even after four cycles. Therefore, CP-BA showed a great potential in the co-removal of inorganic anion-cation complexes from wastewater.
研究领域:
环境科学
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材料科学
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DOI
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Journal of Energy Chemistry
·
2021
·
IF 9.676
Qihao Sun,Bao Xiao,Leilei Ji,Dou Zhao,Jinjin Liu,Wei Zhang,Menghua Zhu,Wanqi Jie,Bin-Bin Zhang,Yadong Xu
All-inorganic Cs 3 Bi 2 I 9 (CBI) halide perovskites are sought to be candidate for photoelectrical materials because of their low toxicity and satisfactory stability. Unfortunately, the discrete molecular [Bi 2 I 9 ] 3− clusters limit the charge-transport behaviors. Herein, the defect halide perovskite based on trivalent Bi 3+ is expanded to Cs 3 Bi 2 I 6 Br 3 (CBIB). Centimeter-size CBIB single crystal ( Φ 15 × 70 mm 3 ) was grown by the vertical Bridgeman method. The powder X-ray diffraction analysis shows that CBIB has P 3 ¯ m 1 structure with lattice parameters of a = b = 8.223 Å, c = 10.024 Å, α = β = 90° and γ = 120°. The density functional theory (DFT) calculations demonstrate that the charge density distribution was enhanced after the dimensional expansion. The enhancement of carrier transport ability of (00 l ) in-plane is characterized before and after dimensional improvement. The obtained CBIB (001) exhibited an electron mobility up to 40.03 cm 2 V −1 s −1 by time-of-flight (TOF) technique, higher than 26.46 cm 2 V −1 s −1 of CBI (001) . Furthermore, the X-ray sensitivity increases from 707.81 μC Gy −1 cm −2 for CBI (001) to 3194.59 μC Gy −1 cm −2 for CBIB (001) . This research will deepen our understanding of Bi-based perovskite materials and afford more promising strategies for lead-free perovskite optoelectronic devices modification.
研究领域:
材料科学
·
光电材料
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DOI
高影响因子
INORGANIC CHEMISTRY
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2021
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IF 5.165
Yuanyuan Li,Puxian Xiong,Gaochao Liu,Mingying Peng,Zhijun Ma
Bismuth (Bi)-activated luminescence materials have attracted much attention for their tunable broad emissions ranging from a visible to near-infrared (NIR) region. However, it remains a challenge to regulate the Bi valence state and achieve NIR emission via a facile way. Here, we report the design and preparation of Ba3Sc4O9:Bi phosphors, which emit visible and NIR emissions simultaneously even prepared in the air condition. The self-reduction mechanism of Bi3+ species in Ba3Sc4O9 with a rigid crystal structure is illustrated based on the charge compensation model, and the coexistence of different Bi-active centers, Bi3+ for visible emission, while Bi+ and Bi0 for NIR emission, is confirmed by the spectroscopic data and X-ray photoelectron spectroscopy (XPS) analysis. The enhanced NIR emission was further achieved through controlled reducing treatment and the related mechanism has also been clarified. This work paves a new way to control bismuth valence and tune the emission of Bi-based luminescence materials for emerging photonics applications.
研究领域:
材料科学
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光学
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DOI
PubMed
高影响因子
FULLERENES NANOTUBES AND CARBON NANOSTRUCTURES
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2025
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IF 1.8
Chaoyi Zhu,Hanwen Duan,Ying Yuan,Jinxi Li,Haixiang Li,Yingjun Li
The contamination of water sources by heavy metals poses significant risks to human health and the environment, driving the need for effective remediation strategies. Adsorption is considered one of the most efficient methods for removing metal ions from wastewater. While graphene oxide (GO) has shown promise as an adsorbent, its ability to adsorb metal cations is still limited. In this study, we enhanced the adsorption performance of GO through carboxylation, leveraging the ability of ionized carboxyl groups (-COO−) to form electrostatic and coordination complexes with Bi³+ ions. The influence of carboxylation degree on Bi³+ adsorption was systematically investigated, along with the role of reaction temperature in modulating the extent of carboxyl functionalization. Successful grafting of chloroacetic acid onto GO via nucleophilic substitution was confirmed through material characterization. XPS and ICP analyses demonstrated that higher carboxylation degrees, achieved at elevated temperatures, correlate strongly with improved Bi³+ adsorption. The carboxylated GO synthesized at 80 °C exhibited a maximum adsorption capacity of 12.18 mg/L. These results underscore that increasing the carboxyl group content significantly enhances Bi³+ uptake. This work offers a feasible strategy for designing functionalized GO-based adsorbents for the efficient removal of heavy metals.
研究领域:
环境科学
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材料科学
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化学工程
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纳米技术
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水污染治理
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DOI
高影响因子
Advanced Healthcare Materials
·
2026
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IF 11
Meihaguli Abulaizi,Maierhaba Aili,Zhong Du,Jiabao Xiong,Cailing Ma,Rong Ma,Nuernisha Alifu,Biao Dong
Cervical cancer (CC) treatment is limited by chemoresistance, inadequate drug accumulation, and the lack of real-time monitoring. Among the underlying mechanisms, heat shock protein 70 (HSP70) mediates resistance to both chemotherapy and photothermal therapy, making it a rational target for intervention. To address these issues, we developed a novel type of cyclic RGD (cRGD) encapsulated SN38 and IR820 loaded bismuth selenide theranostic nanoplatforms-Bi 2 Se 3 -cRGD@SN38/IR820 nanoparticles (Bi-A@SR NPs) based on a bismuth selenide (Bi 2 Se 3 ) as core decorated with cRGD for tumor targeting, and co-loaded with SN38 and IR820. The RGD peptide contains a guanidino group from its arginine residue that can serve as a donor for nitric oxide (NO) generation, enabling the construct to provide both tumor-homing capability and on-demand NO release. The nanoplatform integrates computed tomography (CT) imaging and NIR fluorescence imaging (NIRF) to verify delivery and guide therapy. Upon 808 nm irradiation, photothermal and photodynamic effects generate hyperthermia and reactive oxygen species (ROS), which trigger on-site NO production from the RGD arginine moiety. This NO suppresses therapy-induced HSP70 upregulation, counteracting stress adaptation and enhancing chemo–phototherapy efficacy. By combining imaging-guided delivery, on-demand NO sensitization, and HSP70 inhibition, this nanotheranostic strategy offers a coordinated approach to improving treatment outcomes in CC.
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PubMed
高影响因子
ChemistrySelect
·
2026
·Vol. 11
·期 5
·e05271
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IF 2
Jiahao Lu,Hongtao Jin,Hepeng Zhang,Zhong Tian,Xiaoqi Sun
In this article, a series of bismuth (Bi)-doped rare-earth molybdate orange pigments with near infrared (NIR) properties were synthesized by high temperature solid phase reaction at 1400°C with the general formula of Y 4−x Bi x MoO 9 . The prepared pigments were characterized by analytical techniques such as X-ray diffraction (XRD), scanning electron microscopy (SEM), CIE 1976 color space system, and ultraviolet-visible/near-infrared spectroscopy (UV-Vis/NIR). After doping Bi 2 O 3 into Y 4 MoO 9 , its color changes from yellow to red and finally to orange. All the doped samples belong to the monoclinic crystal system. All pigment samples have an NIR reflectance (R%) of over 97% at 1100 nm. In the study of acid and alkali resistance, the color difference value Δ E * of the pigment before and after soaking in acidic and alkaline solutions is less than 2, indicating its good chemical stability. In the coating simulation investigation, the indoor air temperature difference between the house model coated with synthetic pigments and the house model coated with commercial pigments reaches 8.2°C, indicating that Y 4-x Bi x MoO 9 pigments had good isolation effect and application prospects as a cool pigment.
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CHEMICAL ENGINEERING SCIENCE
·
2026
·
IF 5.1
Zhongshuang Xu,Chiyu Shen,Pengxu Yan,Xiaojing Zhang,Shuai Wang,Zhimao Yang,Chuncai Kong,Qikui Fan
Temperature is a key operating variable that governs both activity and selectivity in the electrochemical CO 2 reduction reaction (CO 2 RR). Here, we systematically elucidate the temperature-dependent behavior of a bismuth-based catalyst supported on carbon nanotubes (Bi-CNT) over a broad window of 303–343 K. The catalyst delivers a maximum Faradaic efficiency of 95% for formate at 318 K, accompanied by a high partial current density for formate of 285.6 mA cm −2 at a total current density of 300 mA cm −2 . By combining in-situ Raman spectroscopy with molecular dynamics simulations, we reveal that the moderate heating enhances formate selectivity through a cooperative increase in local alkalinity and a restructuring of the hydrogen‑bond network of interfacial water, which suppress the hydrogen evolution reaction. At elevated temperatures, the attenuation of local alkalinity and the growth of weakly hydrogen‑bonded water populations promote CO and H 2 formation, leading to diminished formate selectivity. These findings establish temperature‑mediated control of the interfacial microenvironment as an efficient strategy for robust, high‑rate CO 2 ‑to‑formate conversion under industrially relevant, thermally dynamic operating conditions.
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JOURNAL OF ALLOYS AND COMPOUNDS
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2026
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IF 6.7
Taihua Zhang,Xiaofeng Li,Yunfei Lu,Wei Guo,Yan An,Xueting Chang
Polyaniline (PANI) is a promising organic thermoelectric material, but its application is limited by the intrinsic trade-off between electrical conductivity ( σ ) and Seebeck coefficient ( S ). Here, we report a multi-interface engineering strategy to enhance the thermoelectric performance of PANI/Bi₂Te₃ composites. HCl-doped PANI (HPANI) and Bi₂Te₃ are mechanically mixed, and a small amount of emeraldine base PANI (PANI-eb) is introduced to construct additional organic–inorganic interfaces. XPS and UV-vis spectroscopy reveal that these interfaces induce partial de-doping of HPANI, progressively widening the optical bandgap from 1.49 eV to 2.96 eV and reducing carrier concentration. Simultaneously, the increased interfacial density creates energy barriers that filter low-energy carriers, enhancing the average carrier mobility. Hall measurements confirm a mobility increase from 39.9 to 118.6 cm²·V⁻¹·s⁻¹ at 10 wt.% PANI-eb, while carrier concentration decreases monotonically. Temperature-dependent transport further supports the energy-filtering mechanism. Optimized hot pressing at 75 °C improves interfacial contact and polymer chain ordering, leading to simultaneous enhancement of σ and S . The resulting composite achieves a room-temperature S of 149.1 μV·K⁻¹, σ of 17.35 S·cm⁻¹, and a power factor of 38.59 μW·m⁻¹·K⁻¹, which is comparable to the best literature values for bulk PANI-based composites. This work demonstrates that rational interfacial design with PANI-eb, combined with moderate thermal treatment, provides an effective strategy to balance σ and S in polymer-based thermoelectric materials.
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APPLIED SURFACE SCIENCE
·
2026
·
IF 6.6
Xiaohan Li,Yi Wen,Chenguang Qian,Bowen Cui,Fang Yuan,Chunquan Li,Zhiming Sun
Diatomite-induced amino coordination transformation Bi-MOF composite was prepared. • Surface silanol groups modulate Bi 3+ coordination, inducing amino ligand transformation. • The coordination transformation forms highly dispersed NH 2 -Bi-MOF nanowhiskers. • The composite shows enhanced photocatalysis, cycling stability and lower costs. Developing photocatalysts featuring outstanding catalytic activity and economic viability contributes greatly to artificial carbon cycling and addressing energy and environmental challenges. In this study, we adopted a strategy combining amino ligand modification with diatomite support to successfully synthesize amino-modified NH 2 -Bi-MOF/diatomite composites. These materials utilize the silanol groups on the diatomite surface to modulate the coordination environment of the Bi 3+ metal centers, inducing the conversion of amino ligands and promoting the formation of Bi-N bonds, thereby transforming the morphology of the NH 2 -Bi-MOF from an agglomerated state to highly dispersed nanowhiskers. The characterization results indicate that the highly dispersed structure endows the material with outstanding chemical stability, light-harvesting capability, CO 2 adsorption capacity, and carrier separation efficiency. Meanwhile, the optimal sample, NH 2 -Bi-MOF/diatomite-0.2, achieves a CO production rate of 10.440 μmol·g −1 ·h −1 , representing increases of 78% and 45% compared to Bi-MOF and NH 2 -Bi-MOF, respectively. Notably, no apparent decline in catalytic performance was observed after four cycles. Furthermore, the introduction of diatomite substantially reduces catalyst preparation costs. This study also systematically elucidates the conversion mechanism of amino ligands and the interfacial synergy between diatomite and NH 2 -Bi-MOF, clarifying the photocatalytic CO 2 reduction pathways and core mechanisms of the composite material. The findings provide new insights for the development and industrial application of highly efficient and economical photocatalysts. Download: Download high-res image (191KB) Download: Download full-size image
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CHEMICAL ENGINEERING JOURNAL
·
2026
·
IF 12.5
Dan Wu,Yanni Lang,Liang Xu,Qiyuexin Wang,Qiu Fu,Bingli Li,Xinye Zhao,Zhaoyi Yin,Yongjin Li,Dacheng Zhou,Yangke Cun,Zhiguo Song,Yugeng Wen,Yong Yang,Jin Han,Jianbei Qiu
The circular dichroism (CD) signal of D-BiOBr/Bi 0.3 g flipped and intensified. • The nanosheets of D-BiOBr/Bi 0.3 g were arranged in a spiral (counterclockwise) manner, forming petal-shaped nanospheres. • 0.3 g D-BiOBr/Bi exhibits a CO production rate of 84.27 μmol・g −1 h −1 , 3.34 times the value of D-BiOBr and 4.00 times that of 0.3 g pristine BiOBr/Bi sample. • LSPR boosts the migration of spin−down polarized electrons and improves the separation efficiency of photogenerated electron−hole pairs. Chiral inorganic nanomaterials have shown considerable promise in photocatalysis, owing to their distinctive optical activity and asymmetric interfacial effects. Metallic bismuth (Bi) exhibits a localized surface plasmon resonance (LSPR) effect, which markedly enhances both the generation and separation efficiencies of photogenerated electron-hole pairs. By employing D-sorbitol as a chiral inducer, we successfully synthesized chiral D-BiOBr/Bi nanocomposites. We propose that the synergistic integration of metallic Bi and chiral BiOBr enables effective modulation of chirality-induced spin selectivity (CISS), thereby enhancing spin polarization and promoting CO production from CO 2 reduction. Among the prepared samples, D-BiOBr/Bi 0.3 g exhibited the highest photocatalytic CO 2 reduction activity, selectively converting CO 2 to CO. The CO production rate of D-BiOBr/Bi 0.3 g was 84.27 μmol g −1 h −1 , which was 4.00 times and 3.34 times that of BiOBr/Bi 0.3 g and D-BiOBr respectively. Furthermore, magnetic conductive atomic force microscopy (Mc-AFM) measurements revealed that D-BiOBr/Bi 0.3 g generated the strongest tunneling current with an opposite polarity compared to its controls, providing indirect evidence for CISS-associated spin-selective charge transport. Collectively, our findings demonstrate a strong coupling between the LSPR of metallic Bi and structural chirality, which cooperatively boosts spin-polarized electron generation, accelerates electron-hole pair separation, and significantly improves photocatalytic CO 2 reduction performance.
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