CHEMICAL ENGINEERING SCIENCE
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2026
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IF 5.1
Huiyun Xia,Zeliang Wu,Kaixuan Fan,Lifang Song,Sen Huang,Meiqi Yang
In response to the problem of nitrogen oxide pollution in tunnel environments, this study successfully prepared I - doped Bi 2 O 2 CO 3 photocatalyst I-BOC through solid-phase grinding method. The introduction of I - leads to a notable reduction in the bandgap of BOC, while also enhancing the specific surface area and pore volume, thereby facilitating the effective separation of photogenerated carriers. When exposed to visible light, I-BOC demonstrates a peak degradation efficiency of 58% for NO, and experiments involving free radical capture indicate that ·O 2 – is the primary active species, and explore the impact of the tunnel environment on the degradation efficiency of the catalyst. Additionally, epoxy resin served as the substrate for film formation, and 1H, 1H, 2H, 2H-perfluorodecyltrimethoxysilane (PFDTES) was incorporated as a low surface energy additive. A superhydrophobic photocatalytic self-cleaning coating (FBIE) characterized by a micro-nano rough structure was created using a one-step spraying technique. This coating showcases outstanding superhydrophobic properties and water contact angle exceeding 150°, along with excellent mechanical durability and chemical stability, achieving a visible light degradation efficiency of up to 65% for NO, and outstanding physical and chemical self-cleaning ability. By exploring the catalytic effects of I-BOC and FBIE coatings under different humidity conditions, the synergistic mechanism of coating photocatalysis and self-cleaning is revealed, providing broad application prospects for coatings in tunnel air purification.
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高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2025
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IF 9.7
Aiting Xu,Xueliang Lu,Qiao Zhang,Guangxing Yang,Zhiting Liu,Siyuan Yang,Feng Peng
Constructing strongly coupled S-scheme heterojunctions without sacrificing redox capability remains a central challenge in photocatalytic water splitting. Herein, we report the in situ photogeneration of metallic Bi (Bi 0 ) nanobridges from layered Bi 2 O 2 CO 3 (BOC) under UV irradiation, which effectively wire BOC with TiO 2 (P25) to form a ternary BOC-Bi 0 -TiO 2 S-scheme heterojunction. Under ultraviolet-visible light or simulated sunlight, the optimized BOC-0.5P25 catalyst achieves a high H 2 evolution rate of ∼5.8 mmol·g −1 ·h −1 , which further increases by ∼24 % (to ∼7.2 mmol·g −1 ·h −1 ) after light-activated cycling. The apparent quantum efficiency (AQE) reaches 2.45 % at 380 nm. Structural characterizations confirm the light-induced formation of Bi 0 , accompanied by a slight chemical shift in Ti 2 p and Bi 4 f spectra, consistent with interfacial band bending. Band structure and kinetics analyses elucidate an S-scheme charge transfer mechanism where electrons preferentially flow via Bi 0 into TiO 2 while holes stay on Bi 2 O 2 CO 3 , driven by the built-in field. Isotopic labeling experiments via Gas Chromatography-Mass Spectrometry (GC–MS) isotopologues (CH x D 4-x in D 2 O/MeOH) together with online Differential Electrochemical Mass Spectrometry (DEMS) signals confirm that water contributes to both H 2 production and methanol oxidative reforming (partially to CH 4 ). The concept of light-triggered, in-situ mediator activation provides a practical route for photocatalytic water reduction coupled with methanol oxidative reforming under unbiased and noble-metal-free conditions through engineering tightly coupled S-scheme interfaces.
研究领域:
光催化
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材料科学
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可再生能源
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多相催化
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太阳能转换
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PubMed
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
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2026
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IF 6.7
Xin Xie,Qin Yin,Jun Ma,Shuo Geng
Through surface modification of bismuth carbonate (Bi 2 O 2 CO 3 , BOC) using a nitrogen- and oxygen-rich non-ionic polyether (JXGZ), a series of JXGZ-modified BOCs (denoted as x% z-BOC, where z represents the JXGZ modification) were prepared. The interfacial microenvironment and electronic structure of this catalyst were synergistically enhanced, resulting in outstanding performance in the electrocatalytic reduction of carbon dioxide (eCO 2 RR) to form formic acid. Systematic characterization indicates that JXGZ modification significantly enhances the material's hydrophobicity (contact angle increased from 31.5° to 55.1°) and CO 2 adsorption capacity. It stabilizes Bi active sites through electron transfer from oxygen/nitrogen to bismuth, forming an electron-rich surface. Electrochemical testing indicates that 10% z-BOC in a flow cell within 1 M KOH electrolyte can maintain a formate Faraday efficiency exceeding 90% across a broad current density range of −50 to −600 mA cm −2 . Both its current density and production rate outperform most values reported in the literature. In situ infrared and Raman spectroscopy further confirmed that JXGZ modification not only promotes the formation of the key intermediate *OCHO but also optimizes species supply by regulating the interfacial water structure, while enhancing the structural stability of the Bi−O bond under reaction conditions. This work provides a viable materials strategy for designing high-performance, long-lifetime CO 2 reduction catalysts from the perspectives of electronic regulation and interface engineering.
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高影响因子
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS
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2026
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IF 5.9
Jiaxin Du,Ying Lv,Xuelian Chen,Meixia Xiao,Xinqi Liu,Ziliao Zhang
In-situ construction of a Type-I Bi 2 MoO 6 /Bi 2 O 2 CO 3 heterojunction via temperature-mediated topotactic transformation. • Optimized BCM-2 achieved near-complete synergistic removal of RhB and Cr(VI) within 90 min, outperforming individual components. • Unveiled an anomalous charge-transfer mechanism circumventing intrinsic limitations of conventional Type-I heterojunctions. The simultaneous elimination of recalcitrant organic pollutants and toxic heavy metals from industrial effluents demands photocatalytic platforms with synergistic redox capabilities. Herein, we report a topotactic phase-transformation strategy that exploits BiOCOOH nanosheets as a sacrificial topographic template to construct an atomically coherent Bi 2 MoO 6 /Bi 2 O 2 CO 3 (BCM) heterojunction through precision hydrothermal temperature modulation (160 °C). Unlike conventional exogenous deposition routes that generate mechanically contacted, defect-laden interfaces, the thermally driven in-situ nucleation of Bi 2 O 2 CO 3 from the [Bi 2 O 2 ] 2+ structural units of BiOCOOH promoted by DMF-derived carbonate species, ensures lattice-commensurate phase boundaries with negligible interfacial defects, as confirmed by HRTEM-resolved interplanar spacings of 0.196 nm and 0.338 nm across a continuous interface. Despite a nominal Type-I (straddling-gap) band alignment, the BCM-2 composite harbors a pronounced internal electric field (IEF) established by spontaneous interfacial charge redistribution (from Bi 2 O 2 CO 3 to Bi 2 MoO 6 ), supported by XPS binding energy shifts (Bi 4f: +0.2 eV; Mo 3d: −0.1 eV). This IEF induces asymmetric band bending that deviates from conventional Type-I carrier co-localization, spatially directing photogenerated electrons to the strong-reduction-potential conduction band of Bi 2 O 2 CO 3 (−0.61 eV vs. NHE) and holes to the oxidizing valence band of Bi 2 MoO 6 (1.80 eV vs. NHE), a charge-transfer topology mechanistically analogous to the step-scheme (S-scheme) mechanism. Radical trapping and ESR experiments confirm ⋅ O 2 − and h + as the dominant reactive species, fully consistent with this carrier-separation model. The synergy of electrostatic Cr(VI) pre-concentration on the positively charged Bi 2 O 2 CO 3 surface and IEF-mediated efficient carrier separation delivers 100% degradation of Rhodamine B (20 mg/L) and 93.19% reduction of Cr(VI) (30 mg/L) within 60 min under visible-light irradiation (λ > 420 nm, 300 mW cm −2 ), far surpassing the physically mixed counterpart. Exceptional recyclability over four cycles with negligible activity loss further underscores the structural robustness of the topotactic interface. This work demonstrates the potential of topotactic phase transformation as a strategy for controlling heterojunction interfaces through local structural inheritance and promoting S-scheme-like charge-transfer behavior for photocatalytic environmental remediation. Download: Download high-res image (318KB) Download: Download full-size image
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高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
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2024
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IF 5.8
Bo Liu,Jiayi Feng,Tangzheng Lu,Xiang Zhang,Yong Kang
Novel flower-like Bi 2 O 2 CO 3 /Ag 2 WO 4 photocatalysts incorporating oxygen vacancies were successfully prepared by chemical precipitation method. A range of characterization techniques were employed to investigate the morphology features, structure characteristics and photocatalytic properties of the photocatalysts. The composite photocatalyst extends the absorbance edge to the visible region. And it has remarkable adsorption and photocatalytic properties. It efficiently degrades almost all methylene blue (MB) within 90 min under visible light irradiation. This degradation rate surpasses that of pure Bi 2 O 2 CO 3 by a factor of 5.2. The synergistic interaction between oxygen vacancies and heterojunctions effectively diminishes the excitation energy required for the composites, while simultaneously achieving a superior separation efficiency of photogenerated electrons and holes, thereby enhancing the photocatalytic performance. Additionally, the composite photocatalysts demonstrate excellent stability and recyclability, making them suitable for practical wastewater purification. Free radical trapping experiments showed that the primary reactive substances involved in MB degradation is positive hole (h + ). Based on the experimental findings, a plausible working mechanism for Bi 2 O 2 CO 3 /Ag 2 WO 4 heterojunction composite photocatalysts incorporating oxygen vacancies, belonging to the type II heterojunction system, was proposed. This study provides novel perspectives on the development of efficient bismuth-based photocatalysts harnessing the synergistic oxygen vacancies and heterojunctions. These photocatalysts demonstrate promising application prospects in the realm of environmental remediation.
研究领域:
环境科学
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材料科学
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DOI
高影响因子
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
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2018
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IF 3.235
Yinghao Duan,Shuo Li,Sheng Lei,Yuanyuan Xu,Lina Zou,Baoxian Ye
In this work, reduced graphene oxide loaded flower-like bismuth subcarbonate composite (Bi 2 O 2 CO 3 -rGO) has been successfully synthesized by a facile hydrothermal method . The prepared Bi 2 O 2 CO 3 -rGO as modification composite was applied to construct voltammetric sensor for the first time. The Bi 2 O 2 CO 3 -rGO modified glassy carbon electrode (Bi 2 O 2 CO 3 -rGO/GCE) exhibited highly sensitive response to urapidil. The electrochemical behavior of urapidil was studied in detail. Under optimum conditions, a lower detection limit (1.5 × 10 −9 mol L −1 ) and wider linear range (5.0 × 10 −9 mol L −1 –4.0 × 10 −6 mol L −1 ) were achieved by the proposed sensor. Finally, the proposed method was applied to the analysis of real sample, and the results showed applicable and reliable.
研究领域:
分析化学
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电化学
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材料科学
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药物分析
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DOI
高影响因子
Inorganic Chemistry Frontiers
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2020
·Vol. 7
·期 16
·2969-2978
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IF 5.958
Jie-hao Li,Jie Ren,Ying Liu,Hui-ying Mu,Rui-hong Liu,Jun Zhao,Lan-ju Chen,Fa-tang Li
In this paper, a novel ionic liquid-assisted solvothermal method to prepare Cl-doped bismuth oxycarbonate (Bi2O2CO3) is presented. The ionic liquid of [Hnmp]Cl not only enhances the solvothermal process to help the formation of Bi2O2CO3, but also provides chloride element as a dopant. XRD and XPS show that all three samples are Bi2O2CO3 with high purity. XPS, solid EPR, and TEM results prove that Cl is doped into the Bi2O2CO3 lattice and oxygen vacancies are generated. DRS results show that after Cl doping, the absorption of visible light by Bi2O2CO3 is enhanced. Surface photovoltage (SPV) and transient photocurrent tests show that as the doping amount of Cl increases, the separation efficiency of photogenerated electron–hole pairs over Bi2O2CO3 improves. The photocatalytic activity of Bi2O2CO3 is evaluated by the degradation of rhodamine B, which is increased after Cl doping. This work would broaden the application of ionic liquids in the solvothermal process and deepen the understanding of anionic ion doping in Bi2O2CO3.
研究领域:
材料科学
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环境科学
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化学
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高影响因子
APPLIED CATALYSIS B-ENVIRONMENTAL
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2016
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IF 8.328
Jie Ding,Zan Dai,Fan Qin,Huiping Zhao,Shuai Zhao,Rong Chen
To solve serious energy and environmental crises caused by rapid industrial development, Z-scheme photocatalytic system provides a potential strategy to as ideal photocatalyst with wide absorption range, high charge-separation efficiency and strong redox ability. In this work, we develop a facile time-dependent method to fabricate Z-scheme BiO 1-x Br/Bi 2 O 2 CO 3 photocatalyst with rich oxygen vacancies for visible light photocatalysis , which exhibits highly enhanced performance for antibiotics (CIP, 4-MAA etc.) photodegradation . A possible mechanism of the improved photocatalytic efficiency based on the Z-scheme photocatalytic system formed via oxygen vacancy is also proposed. Oxygen vacancies, acting as electron mediator, could significantly promote the separation of photoinduced charge carriers. Due to the increase of redox ability, it benefits to the production of superoxide radical ( O 2 − ) on the CB of BiO 1-x Br and hydroxyl radical ( OH) on the VB of Bi 2 O 2 CO 3 , respectively. This work demonstrates that a simple oxygen vacancy involved Z-scheme photocatalytic system could efficiently enhance the photocatalytic activity for the degradation of pollutants.
研究领域:
环境科学
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材料科学
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产品关联
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2026
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IF 9.6
Ao Sun,Mingliang Sun,Ruyu Zhang,Hongwei Zhu,Yan Xing
As a green alternative to the Haber-Bosch process, photocatalytic nitrogen fixation is currently hindered by three persistent challenges, namely rapid carrier recombination, the high activation energy of the N N bond, and weak N 2 adsorption affinity, which collectively impede its practical application. Herein, an oxygen vacancy (OV)-rich Bi 3 O 4 Br/Bi 2 O 2 CO 3 (BOBC) S-scheme heterojunction is rationally constructed via a facile one-pot in situ synthetic strategy. The formation of the S-scheme heterojunction induces directional charge transfer across the Bi 3 O 4 Br/Bi 2 O 2 CO 3 interface, effectively suppressing charge recombination while preserving the strong reduction potential of Bi 3 O 4 Br. Simultaneously, the introduced oxygen vacancies (OVs) act as dual-role regulators by enhancing N 2 adsorption through increased surface electron density and coordinatively unsaturated active sites, as well as facilitating electron injection into adsorbed N 2 via defect-induced electronic structure modulation, thereby synergistically destabilizing the N N bond and promoting its activation. Furthermore, the presence of OVs significantly improves light-harvesting capability of the heterojunction. Owing to these integrated merits, the optimized 15-BOBC-OVs catalyst exhibits a remarkable photocatalytic nitrogen fixation rate of 151.3 μmol g −1 h −1 in pure water, corresponding to a 12.0-fold enhancement compared with pristine Bi 3 O 4 Br. In situ FT-IR analysis provides direct evidence for an associative distal reaction mechanism during nitrogen reduction reaction. This work demonstrates a concise and effective strategy for the rational design Bi-rich bismuth oxyhalide photocatalysts for high-performance nitrogen fixation by coupling S-scheme heterojunction construction with oxygen vacancy engineering.
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DOI
PubMed
高影响因子
COLLOIDS AND SURFACES B-BIOINTERFACES
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2026
·
IF 5.9
Furong Zhu,Keyi Xu,Hongjie Ling,Jiaxi Chao,Jiayin Li,Jun Liu,Chun Yang
3D/2D Bi 2 O 2 CO 3 /rGO composites were synthesized successfully. • Bi 2 O 2 CO 3 /rGO/GCE were used for high-sensitive electrochemical CAP detection. • Wide linear range (0.001–100 μM) and low LOD of 0.362 nM (S/N = 3) are obtained. Chloramphenicol (CAP) remains prevalent in aquaculture despite its classification as a Group 2 A carcinogen. Given the associated health risks, establishing robust detection methods for CAP is imperative. Herein, we innovatively propose the three-dimensional (3D) flower-like Bi 2 O 2 CO 3 /rGO composites for CAP electrochemical sensing. The best sensing parameters (pH, scan rate, accumulation conditions) were systematically investigated. As a result, the Bi 2 O 2 CO 3 /rGO/GCE sensor exhibits a peak current density of 381.91 µA/cm 2 , ultra-low detection limit (0.362 nM), and two wide linear ranges (0.001–10 μM, 10–100 μM), enabling both trace and high-concentration quantitative detection of CAP. These high sensing performances could be ascribed to the synergistic effect between rGO and Bi 2 O 2 CO 3 , which improves the stability of Bi 2 O 2 CO 3 /rGO composites. Their interfacial interaction accelerates electron transfer, lowers activation energy, and forms an efficient 3D electron/mass transport network. This sensor also applied in detecting CAP in lake water and milk samples with satisfied recovery rates. These findings underscore the Bi 2 O 2 CO 3 /rGO/GCE as a promising platform for sensitive CAP monitoring in environmental and food safety applications.
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PubMed
高影响因子
Journal of Cleaner Production
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2022
·
IF 11.072
Tingjin Jiang,Yang Wang,Zichang Guo,Haopeng Luo,Chuanxiang Zhan,Yaojin Wang,Zhe Wang,Fang Jiang,Huan Chen
Piezoelectric catalysis based on the polarization of piezoelectric materials is a promising technology for environmental pollutant treatment. Developing effective piezoelectric catalysts and clarifying the reaction mechanism are crucial to the application of piezoelectric catalysis. Herein, a unique strategy of photochemical self-etching of Bi 25 FeO 40 was used to prepare a piezoelectric catalyst of Bi 25 FeO 40 /Bi 2 O 2 CO 3 . During the photochemical process, methanol was oxidized to formaldehyde, and then Bi species on the surface of Bi 25 FeO 40 reacted with formaldehyde to form Bi 2 O 2 CO 3 . As a lead-free piezoelectric catalyst, the Bi 25 FeO 40 /Bi 2 O 2 CO 3 composite possessed excellent activity for the degradation of 4-chlorophenol under ultrasonic vibration, and the degradation efficiency was more than 90% within 120 min. Introducing Bi 2 O 2 CO 3 onto the surface of Bi 25 FeO 40 can significantly promote the piezoelectric catalytic activity of Bi 25 FeO 40 via the effect of built-in electric fields. It was also found that ·OH and ·O 2 − are the main active species that are responsible for the degradation of 4-CP. The results that are presented here can extend the piezoelectric application of bismuth ferrate , and the strategy for building up the heterojunction is helpful for the preparation of other Bi-containing piezoelectric catalysts.
研究领域:
环境科学
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催化材料科学
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DOI
高影响因子
FUEL
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2024
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IF 6.7
Caijun Deng,Chaofan Qi,Zongping Xue,Kai Cui,Xiaomin Wu,Guohua Jing,Huawang Zhao
Hydrogen is a promising clean energy source, and formic acid serves as a significant hydrogen storage material. The electrocatalytic reduction of carbon dioxide (ECO 2 RR) is a promising approach to produce fromate. However, the challenge lies in developing high-performance electrocatalysts for the conversion of CO 2 to formate, due to the limited intrinsic activity, conductivity, and the low density of active sites. In this work, we have fabricated highly active and selective CH 3 COO(BiO) (BiOAc) nanosheets. These nanosheets undergo a transformation into Bi clusters-BiO 2 CO 3 during electrolysis, endowing the material with superior electrocatalytic capabilities for CO 2 reduction to formate, with a Faradaic selectivity of over 90 % across a wide potential window from −0.8 to −1.3 V. Additionally, this catalyst can sustain high current densities above 80 mA cm −2 at low applied potentials without compromising selectivity in a H type electron reactor. Both density functional theory (DFT) and in situ attenuated total reflection-infrared spectroscopy (in situ ATR-IR) findings indicate that the Bi 3+ with reduced density facilitate the activation of CO 2 to *CO 2 , while the charge density-enriched Bi 0 atoms in Bi cluster promote the capture of HCO 3 – and enhance subsequent proton-coupled electron transfer reactions. Collectively, these factors significantly reduce the energy barrier for *OCHO formation on BiOAc, thereby enhancing its catalytic activity and Faradaic efficiency for the electroreduction of CO 2 .
研究领域:
材料科学
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环境科学
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电化学
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DOI
高影响因子
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