Nanoscale
·
2022
·Vol. 14
·期 39
·14520-14528
·
IF 8.307
Weiwei Xu,Ningbo Fan,Shiji Xu,Linxing Meng,Bin Xu,Min Zhou,Wei Tian,Liang Li
Introducing suitable interfacial chemical bonds into heterojunctions can increase the charge carrier density, propel the charge separation, and facilitate interfacial charge extraction in photoanodes for photoelectrochemical (PEC) water oxidation. However, tuning chemical bonds at heterojunction interfaces and elucidating their influences on band alignment and the associated evolution of PEC performance remain elusive. Herein, Bi–S bonds were introduced into the interface of a CdIn2S4 (CIS)/Bi2WO6 (BWO) heterojunction. In situ irradiated X-ray photoelectron spectroscopy and electron spin resonance signals confirm that the Bi–S bond transforms the band alignment from type II to the direct Z-scheme, significantly enhancing the carrier separation efficiency. Theoretical calculations show that the Bi–S bond not only acts as an atomic-level charge transfer channel, but also changes the migration pathway and distance within the heterojunction. As a result, the optimized CIS/BWO photoanode exhibits a relatively high PEC performance of 4.25 mA cm−2 at 1.23 V vs. RHE (VRHE) and a low onset potential of 0.30 VRHE. This work presents a new avenue to construct comprehensively improved photoanodes by tuning the interfacial structures at the atomic level.
研究领域:
材料科学
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光化学
·
电化学
·
可再生能源
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APPLIED CATALYSIS A-GENERAL
·
2016
·
IF 4.012
Yangyang Zhang,Yiping Guo,Bijun Fang,Yujie Chen,Huanan Duan,Hua Li,Hezhou Liu
BiO 2 CH 3 nanoplate, a new organometallic crystal, with octagonal morphology is successfully prepared using methanol solvothermal method and further employed as template to fabricate porous β-Bi 2 O 3 octagonal nanoplates with a thickness of less than 50 nm. Then a series of hierarchical octagonal haystack-like β-Bi 2 O 3 /Bi 2 S 3 hybrids with large heterointerface and small bandgaps (1.36–1.44 eV) are constructed. It is found that, different from many regular photocatalysts that suffer from shrink of photocatalytic efficiency, the photoactivities of all β-Bi 2 O 3 /Bi 2 S 3 heterostructures are continuously enhanced with growing test cycles, owing to the formation of Bi 2 O 3− x S x solid solution, in which the built-in electric filed induced by lattice distortion can brings about higher e − /h + separation efficiency. The gradually increasing photocatalytic activity can reach to an up limit in about 5 photocatalytic cycles and maintain at this level. β-Bi 2 O 3 /Bi 2 S 3 heterostructure loaded with 20 mol% of Bi 2 S 3 is demonstrated to be the best photocatalyst and capable of fully decomposing Rh B in 30 min. Our work provides deep insights into the nature of the inversed photocatalytic behavior and facilitates the advanced design of photocatalysts with unabated photoactivities.
研究领域:
材料科学
·
光催化
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Materials Today Chemistry
·
2025
·
IF 6.7
Yuan Hu,Zhengnan Wei,Qiang Chen,Jing Xu,Lu Huang,Xi Lin
The advancement of green environmental protection and renewable new energy has become a pivotal aspect of sustainable development, particularly in light of the dual challenges posed by environmental pollution and energy scarcity. Bi₂S₃ is an environmentally friendly and cost-effective semiconductor material with high theoretical weight and volumetric capacity. Nevertheless, the electrochemical cycle of Bi 2 S 3 is characterised by a significant volume expansion, which can result in the formation of electrode powder and a deterioration in battery performance. In this work, a "sea urchin-like" Bi 2 S 3 electrode material is self-assembled from a nanorod designed and prepared as anode material for a sodium ion battery (SIB). The findings demonstrate that the 3D urchin-like configuration can enhance structural integrity, stabilize reaction intermediates, facilitate reversible transformation and mitigate the substantial volume fluctuations induced by sodium ions during the embedding and removal processes. This strategy facilitates the commercialisation of SIB and offers insights into the development of other energy storage devices.
研究领域:
材料科学
·
能源存储技术
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高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2023
·
IF 6.2
Jinghao Hua,Changchang Ma,Dayu Wu,Haitao Huang,Xiaojun Dai,Kaidi Wu,Haihong Wang,Zhaowei Bian,Sheng Feng
In this study, a novel Z-scheme Bi 19 S 27 Br 3 /CoAl-LDH heterojunction was prepared. An interface charge transfer channel was established between Bi 19 S 27 Br 3 and CoAl-LDH, accelerating the transition efficiency of interface electrons from CoAl-LDH to Bi 19 S 27 Br 3 . Thereby ensuring more excited electrons to participate in CO 2 photoreduction reactions. The reduction products were tested under artificial light conditions, and triethanolamine was selected as a sacrificial agent. After 5 h of illumination, the CO yield of Bi 19 S 27 Br 3 /CoAl-LDH Z-scheme heterojunction was 86.41 μmol·g −1 is 4 times and 7 times higher than Bi 19 S 27 Br 3 and CoAl-LDH, respectively. The yield of CH 4 in Bi 19 S 27 Br 3 /CoAl-LDH is 3.97 μmol·g −1 is 4 times higher than CoAl-LDH. Also Bi 19 S 27 Br 3 itself does not produce CH 4 . The results indicate that the Z-scheme heterojunction effectively enhances the photoreduction ability of CO 2 , providing a new approach for accurately controlling the direction of photo generated charge separation to prepare high-performance photocatalysts.
研究领域:
材料科学
·
环境科学
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JOURNAL OF ALLOYS AND COMPOUNDS
·
2018
·
IF 3.779
Wenwen Liu,Donglin Zhong,Zhiqiang Dai,Yi Liu,Juan Wang,Ziyu Wang,Jun Pan
Photoabsorption and surface property of semiconductor are two key factors to determine its photocatalytic performance. In this work, BiOCl-Bi 2 S 3 composites composed of Bi 2 S 3 nanoparticles bonded on BiOCl nanoplates enclosed with {001} and {110} crystal facets were synthesized through an in-situ ion exchange method at room temperature. The transformed Bi 2 S 3 made BiOCl-Bi 2 S 3 composites efficient visible light absorption, ensuring the quantity of photoinduced carriers as well as intimate crystalline-amorphous contact interface to benefit the separation of photoinduced carriers. Moreover, BiOCl nanoplates enclosed with {001} and {110} crystal facets can convenient transfer carriers to {001} crystal facets. The photocatalytic performance of BiOCl-Bi 2 S 3 composites was evaluated by the methylene blue photodegradation under visible light irradiation and the results indicate that BiOCl-Bi 2 S 3 composites have good photocatalytic ability due to enhanced light absorption, efficient separation and transfer of carriers. Based on the active species trapping experiments, transient photocurrents, electrochemical impedance spectroscopy and energy band structure , a possible photocatalytic mechanism of methylene blue over the BiOCl-Bi 2 S 3 composites was proposed.
研究领域:
材料科学
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环境科学
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DOI
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MATERIALS SCIENCE AND TECHNOLOGY
·
2016
·
IF 1.008
D. Tan,Y. Liu,W. Guo,J. Wang,Z. Chang,D. Li
In the present work, W–Bi–S-tridoped TiO2 nanoparticles were synthesised by a simple sol–gel method. The structure and morphology of as-prepared W–Bi–S-tridoped TiO2 were characterised by using X-ray powder diffraction, transmission electron microscopy, scanning electron microscopy and UV–Vis diffuse reflectance spectrum. It was found that the W–Bi–S-tridoped TiO2 nanoparticles were well crystallised with a small size distribution. The absorption edge of TiO2 was extended into visible-light region obviously after being doped with W, Bi and S. The photocatalytic degradation of methylene blue was used as a probe reaction to evaluate the efficiency of W, Bi and S doping. The W–Bi–S-tridoped TiO2 exhibited the best photocatalytic activity, compared with TiO2, S-TiO2, W–S–TiO2 and Bi–S–TiO2. The mechanism that enhanced photocatalytic activity might be attributed to the synergistic effect of W, Bi and S.
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INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2026
·
IF 8.7
Yuxuan Guo,Yueyuan Xu,Yueqi Zhou,Canming Hu,Chengli Ding,Abulikemu Abulizi
The use of photogenerated carriers to regulate interfacial photo-redox reactions and improve the efficiency of photocatalytic applications has become a hot topic in photocatalyst research. We proposed a novel strategy, which enables efficient charge separation by uniformly deposition CuS/Bi₂S₃ nanoparticles on three-dimensional porous cellulose-derived carbon aerogel (CA), and utilizes highly active holes excited by ultraviolet-visible light to drive surface reactions, demonstrating excellent performance in the photo-oxidative degradation of methylene blue (MB) organic pollutants. The samples were characterized and structurally tested using techniques such as X-ray fluorescence spectroscopy, X-ray diffraction analysis, scanning electron microscopy, and a BET specific surface area analyzer. Under visible light irradiation, the composite material demonstrated remarkable degradation efficiency for methylene blue, achieving 98.98% removal within 80 min while maintaining over 87.48% of its initial activity after five consecutive reaction cycles. The enhanced photocatalytic performance is attributed to the fact that the carbon aerogel matrix provides a 3D framework with high surface area to effectively disperse catalyst nanoparticles and organic dye molecules near the active site, its conductive network facilitates efficient electron transport, and the porous structure can optimally separate photogenerated electron-hole pairs by enhancing light absorption through internal scattering mechanisms. We identified that superoxide anions (·O₂ − ) and hydroxyl radicals (·OH) act as the primary active species in the degradation process through radical trapping experiments. This study not only presents a high-performance, environmentally friendly catalyst for wastewater treatment but also offers valuable design principles for developing biomass carbon-based photocatalytic systems with S-scheme heterojunctions.
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JOURNAL OF ALLOYS AND COMPOUNDS
·
2020
·
IF 4.65
Junli Wang,Lei Jin,Tingting Wang,Lijun Zhao,Fan Guan,Shaopeng Li,Dan Wang,Junhao Zhang
We report the ethylene glycol-mediated solvothermal synthesis of the continuous solid solution (Sb 1-x Bi x ) 2 S 3 (0 < x < 1) with 1D nanostructures (nanowires and nanorods). The ternary products show a broad variation in Bi:Sb composition ratios (53:47–7:93), length-to-diameter aspect ratios (2.7–66.2), and optical bandgap energies (1.36–1.55 eV) as well as an enhanced photocurrent (e.g., (Sb 1-x Bi x ) 2 S 3 with x = 0.22 is three times higher than pure Sb 2 S 3 ). The gradual shift of peak positions in the XRD patterns and the uniform distributions of Bi, Sb and S elements in EDS mapping prove the formation of single-phase (Sb 1-x Bi x ) 2 S 3 solid solution. Its formation is due to an isostructure-favored alloying mechanism, since Sb 2 S 3 and Bi 2 S 3 possess the same orthorhombic structure (space group: Pnma) and the similar lattice constants . The substitution of Bi for Sb isovalent cations can shorten the lengths of ternary alloyed Sb–Bi–S nanowires and transfer them to low aspect-ratio nanorods at high Bi/Sb precursor ratios. The dependence of the lengths on Bi/Sb ratios is reasonably interpreted considering the differences in the number of nuclei at different amounts of Bi ions and the covalency of Bi–S and Sb–S bonds during the alloying process.
研究领域:
材料科学
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纳米技术
·
光学
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DOI
高影响因子
Nano Research
·
2023
·
IF 9.9
Dou Tong,Song Dian,Wang Yiping,Zhao Xuhui,Zhang Fazhi,Lei Xiaodong
Electrocatalytic CO 2 reduction reaction (ECO 2 RR) converts CO 2 to high-value chemical products and promotes the carbon cycle. Sulfur (S)-modified copper (Cu) and bismuth (Bi)-based catalysts have been recognized as promising catalysts for ECO 2 RR. Both of them are highly active for selective formate generation, however, their poor stability and severe competing hydrogen evolution reaction (HER) remain challenging. Herein, S-doped Cu coated with Bi (Bi/Cu-S) is developed to improve ECO 2 RR selectivity to formate. Bi/Cu-S/brass mesh (BM) electrode material for ECO 2 RR was prepared by electrodepositing Bi on the surface of Cu-S/BM nanowires obtained from CuS/BM after the electroreduction. The Faradaic efficiency (FE) of the formate reaches the maximum of 94.3% at −0.9 V vs. reversible hydrogen electrode (RHE) with a partial current density as high as −50.7 mAcm −2 and a yield of 30.7 mmolh −1 cm −2 under 0.5 M KHCO 3 electrolyte. Meanwhile, the FE of formate is higher than 90% in the voltage range of −0.8 to −1.0 V vs. RHE. It also shows good stability at −0.9 V vs. RHE with the FE of formate remaining above 93% after a 10 h reaction. Density functional theory (DFT) calculations demonstrate that the Bi/Cu-S structure promotes the adsorption of CO 2 and effectively inhibits HER by enhancing the adsorption of *H to a great extent, improving the selective conversion of CO 2 to formate. This work deepens the understanding of the mechanism of Cu-Bi-based catalysts and S-modified Cu-based catalysts in selective ECO 2 RR to formate, and also provides a new strategy for catalyst design.
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JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
·
2025
·Vol. 36
·期 30
·1-21
·
IF 2.8
Yang Minjie,Zou Congyang,Ji Yufeng,Liu Ruijie,Xu Ying
A novel MIL-101(Fe)/Bi₂S₃ Z-scheme heterojunction with a metal–organic framework (MOF) structure was synthesized via a solvothermal method. Compared with pristine MIL-101(Fe) and pristine Bi₂S₃, this composite exhibits a significant breakthrough in degradation performance toward rhodamine B (RhB) and tetracycline hydrochloride (TCH). Specifically, it achieves a degradation efficiency of 95.7% for 20 mg/L TCH within 120 min and 98.6% for 40 mg/L RhB within 90 min.Characterizations including X-ray diffraction (XRD), scanning electron microscopy (SEM), ultraviolet–visible diffuse reflectance spectroscopy (UV–Vis DRS), and electrochemical impedance spectroscopy (EIS) confirm that the MOF structure of MIL-101(Fe) provides a stable support matrix for Bi₂S₃. Moreover, the construction of the Z-scheme heterojunction can effectively suppress the recombination of photogenerated electron–hole pairs while retaining the strongly oxidizing hydroxyl radicals (・OH) and strongly reducing superoxide radicals (・O₂⁻). More importantly, after five recycling cycles, the degradation efficiencies of the composite for TCH and RhB remain at 86.8% and 88.6%, respectively, with no obvious damage to its crystal structure after cycling. This demonstrates superior structural stability and reusability compared to most reported MOF-based photo-Fenton catalysts.
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ChemSusChem
·
2026
·Vol. 19
·期 12
·e70804
·
IF 5.9
Kening Xiang,Haoyu Wang,Yuhao Hong,Tao Liu,Cuizhu Li,Yared Daniel Reta,Yeshitla Tsegaw Gizaw,Dongfang Lu,Dong-Hau Kuo,Jinguo Lin,Xiaoyun Chen
Herein, a simple and environmentally benign synthetic strategy is developed to construct a hydrazine-regulated Bi/S co-doped CeVO 4 trimetallic sulfur-oxide photocatalyst (Bi/S-CeVO 4 ). The resulting material features abundant oxygen vacancy (Vo) defects and stabilized multivalent Ce 3+ /Ce 4+ and V 4+ /V 5+ states, which synergistically enhance photocatalytic hydrogen evolution reaction (PHER) performance under visible light irradiation. Band structure analyses indicate that Bi/S co-doping effectively modulates the electronic structure of CeVO 4 , leading to improved photocatalytic performance toward PHER. The coexistence of multivalent Ce 3+ /Ce 4+ and V 4+ /V 5+ species provides efficient electron-hopping pathways, facilitating photogenerated charge separation and transfer while prolonging carrier lifetime. In addition, Vo defects served as catalytic sites for water-molecule adsorption and activation, further accelerating surface reaction kinetics. Benefiting from these synergistic effects, the optimized Bi/S-CeVO 4 -3, featuring the highest electrochemically active surface area of 0.0015 cm 2 and Vo concentration of 24.5%, and suitable ratio of Ce 4+ /(Ce 3+ +Ce 4+ ) (41.8%) and V 4+ /(V 4+ +V 5+ ) (38.5%), delivers the highest PHER rate of 1514.7 μmol·h –1 , with an apparent quantum efficiency (AQE) x-ray diffraction of 15.28% at 420 nm. Moreover, the catalyst demonstrates excellent stability and durability. This work presents a feasible and effective strategy for electronic structure and defect engineering of CeVO 4 -based photocatalysts to achieve efficient solar-driven hydrogen evolution. Graphical Inspired by battery-material redox chemistry, hydrazine-regulated Bi/S co-doping constructs a defect-rich CeVO 4 sulfur-oxide with stabilized multivalent states, enabling a photocatalytic hydrogen evolution reaction rate of 1514.7 μmol·h –1 and an apparent quantum efficiency of 15.28% at 420 nm.
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