JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2025
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IF 9.7
Fanwei Meng,Chao Qu,Lanyang Wang,Decai Yang,Zezhong Zhao,Qing Ye
Photocatalytic CO 2 reduction technology plays a significant role in the energy and environmental sectors, highlighting the necessity for developing high-efficiency and stable catalysts. In this study, a novel photocatalyst, x NiCo 2 O 4 /CN ( x = 1, 3, and 5 wt%), was synthesized by depositing zeolitic imidazolate framework-67 (ZIF-67)-derived nickel cobaltate (NiCo 2 O 4 ) hollow nanocages onto porous graphitic carbon nitride ( g -C 3 N 4 , CN) nanosheets for photocatalytic CO 2 reduction. Under visible light irradiation, the resulting 3NiCo 2 O 4 /CN photocatalyst demonstrated exceptional CO yields of up to 2879.5 μmol g −1 h −1 , surpassing those of NiCo 2 O 4 and CN alone by factors of 3.3 and 11.6, respectively. The introduction of hollow NiCo 2 O 4 nanocages increased the specific surface area of the material and enhanced the number of active sites, while strengthening visible light absorption. The creation of a built-in electric field, induced by the Fermi level difference between the two materials, was confirmed through ultraviolet photoelectron spectroscopy (UPS) characterization. This resulted in the formation of a Z-scheme heterojunction, significantly enhancing the separation and migration of photogenerated charge carriers. Notably, 3NiCo 2 O 4 /CN exhibits excellent stability during long-term photocatalytic reactions, ensuring reliable performance for practical applications. This study offers novel insights and methodologies for developing efficient photocatalytic CO 2 reduction catalysts.
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APPLIED CATALYSIS B-ENVIRONMENTAL
·
2025
·
IF 21.1
Jinghao Zhu,Guiyang Yu,Hang Gao,Ruihong Sun,Ke Gong,Xiang Li,Debao Wang
Solar-driven upcycling of plastic waste to valuable chemicals provides an economic and low-energy technology to solve the accumulation of plastic waste and environmental pollution problems. However, simply relying on the capacity of single semiconductor system is still limited for high-efficient upcycling activity. Here, a low-cost plasmonic metal Bi-modified P-doped g-C 3 N 4 (Bi/PCN) is firstly reported to apply the conversion of waste plastics (including PE, PP, PVC, PEG, and PAM) under natural environment conditions without adding any cocatalysts or sacrificial agents. TAS and theoretical calculation reveal that the synergistic effect of Bi plasmonic excitation and doped P engineering not only improves light absorption ability, but also tunes interfacial Schottky barrier height (SBH) for the excellent charge separation and transport. The superposed amplification effect of Bi plasmonic excitation originates from hot electron injection, SPR scattering effect, and electromagnetic near-field enhancement. Optimized 1.0 %Bi/PCN composite achieves highly efficient upcycling of PE plastic to HCOOH product as liquid hydrogen storage medium with 1.88 % upcycling efficiency, which is the highest upcycling efficiency upon plasmonic photocatalysts as present. In situ EPR and IR spectra disclose plastics proceed multi-oxidative C C cleavage, where •O 2 and •OH radicals trigger plastic molecule and the intermediates of alkyl peroxide, alkyl radical, and alkoxy radical are successively formed. This work provides a preferable strategy for developing high-performance photocatalysts for upcycling of plastics waste through surface plasmon effect.
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Nanomaterials
·
2025
·Vol. 15
·期 18
·1443
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IF 4.3
Shicheng Liu,Na Li,Qulan Zhou
Elucidating the mechanisms of CO2photocatalytic conversion systems is crucial for tackling the challenges of carbon neutrality. In this study, a series of Ag@g-C3N4photocatalysts were constructed with metal particle size modulation as the core strategy to systematically reveal the modulation mechanism of Ag nanoparticles (Ag NPs) size variation on the selectivity of CO2photoreduction products. Systematic characterizations revealed that increasing Ag size enhanced visible light absorption, promoted charge separation, and improved CH4selectivity. Photocatalytic tests showed Ag3.0%@CN achieved optimal activity and electron utilization. Energy band analyses indicated that Ag modification preserved favorable conduction band positions while increasing donor capacity. Further density-functional theory (DFT) calculations reveal that Ag NPs size variations significantly affect the adsorption stability and conversion energy barriers of intermediates such as *COOH, CO and CHO, with small-sized Ag7NPs favoring the CO pathway, while large-sized Ag NPs stabilize the key intermediates and drive the reaction towards the CH4pathway evolution. The experimental and theoretical results corroborate each other and clarify the dominant role of Ag NPs size in regulating the reaction path between CO and CH4. This study provides mechanistic guidance for the selective regulation of the multi-electron reduction pathway, which is of great significance for the construction of efficient and highly selective CO2photocatalytic systems.
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ANALYTICA CHIMICA ACTA
·
2025
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IF 6
Zhongheng Wei,Huini Luo,Danlu Huang,Peixin Wei,Jiayi Zhang,Jihua Wei,Qianli Tang,Longjian Huang,Kai Zhang,Xianjiu Liao
Flap endonuclease 1 (FEN1) is crucial for DNA replication, repair, and telomere maintenance. Its dysregulation is linked to various cancers and diseases. Accurate detection of FEN1 is essential for early diagnosis and therapeutic monitoring. Thus, a novel electrochemiluminescent (ECL) biosensor has been developed for the structure-specific and detection of FEN1. The strategy integrates dumbbell DNA probe-mediated transcription and CRISPR/Cas13a-induced trans-cleavage of RNA G-quadruplexes. In the presence of FEN1, the 5′-flap structure of the probe was selectively cleaved and subsequently ligated by T4 DNA ligase to form a closed circular template. This enabled T7 RNA polymerase to transcribe crRNA-encoded RNA strands, which activated Cas13a to cleave surface-tethered G-quadruplexes/hemin complexes on a Ru(II)/Ti 3 C 2 /AuNPs-modified electrode, thereby restoring the quenched ECL signal. The biosensor exhibited an ultralow detection limit of 4.82 × 10 -9 U μL -1 and a wide dynamic range (1 × 10 -8 to 1 × 10 -5 U μL -1 ), along with excellent specificity and stability. Successful application in human serum validated its reliability for complex biological samples. This work presents a powerful platform for sensitive FEN1 monitoring, holding potential for clinical diagnostics and enzymatic analysis.
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ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
·
2024
·Vol. 31
·期 6
·8781-8797
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IF 0
Al-Nayili Abbas,Alhaidry Wissam A.
Herein, novel surface structure LaFeO 3 /nitrogen-deficient g-C 3 N 4 nanocomposites (LaFeO 3 /g-C 3 N 4 -H) have been successfully synthesized by a two-step process. First, nitrogen-deficient graphitic carbon nitride (g-C 3 N 4 -H) was produced by thermally condensing melamine that had been treated with acetic acid as a precursor. After that, LaFeO 3 was incorporated into the g-C 3 N 4 -H nanosheets. The as-prepared nanostructured materials were characterized by XRD, FT-IR, N 2 adsorption–desorption experiments, FESEM, and TEM, demonstrating the formation of interfacial interaction and heterogeneous structure in LaFeO 3 /g-C 3 N 4 -H nanocomposites. Additionally, UV–vis diffuse reflectance spectra (DRS) and photoluminescence spectra (PL) have been used to assess the optical properties of the nanohybrids. The results show that the LaFeO 3 /g-C 3 N 4 -H nanocomposite was successfully produced with a reliable interfacial interface, and produced a good heterojunction relationship between g-C 3 N 4 -H and LaFeO 3 which may significantly boost the photocatalytic activity as compared to prinstine g-C 3 N 4 and LaFeO 3 . Phenol degradation under visible light irradiation was used to test the photocatalytic activity of LaFeO 3 /g-C 3 N 4 -H, and the results showed that 10%-LaFeO 3 /g-C 3 N 4 -H had significant photocatalytic activity and remarkable adsorption efficiency, with an overall removal rate of phenol up to 88% after 180 min of visible light irradiation. This study may present a novel method for developing highly efficient artificial photocatalytic systems.
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Surfaces and Interfaces
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2024
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IF 5.7
Fengyun Su,Mengzhen Tian,Hailong Cao,Zhishuai Wang,Qiang Zhao,Haiquan Xie,Yezhen Zhang,Xiaoli Jin,Xin Li,Zhengdao Li
Semiconductor-based photocatalytic water splitting enables the conversion of abundant solar energy to green and renewable hydrogen energy. Graphitic carbon nitride (g-C 3 N 4 ) is synthesized using a straightforward method, demonstrating stable physicochemical properties and possessing an optimal bandgap, thus positioning it as a promising photocatalyst in the realm of environmental sustainability. Oxygen vacancies are extensively employed to modulate light absorption and surface properties of metal-oxide semiconductors. In this study, g-C 3 N 4 nanosheets were coupled with oxygen-deficient tungsten trioxide (WO 3-x ) to form heterojunction photocatalysts ( X -WOCN). Comprehensive material characterization results demonstrated that the constructed heterojunction extended the visible light absorption range, improved photogenerated electron-hole separation efficiency, and thus augmented photocatalytic activity . Notably, the optimum hydrogen evolution rate of 6 %-WOCN was enhanced by 5.4-fold compared to that of g-C 3 N 4 . Furthermore, we propose a Z-scheme heterojunction charge separation mechanism mediated by oxygen defects and support this mechanism through detection of surface-active substances •O 2 − and •OH. This study offers novel propositions into the function of oxygen defects in facilitating charge separation within Z-scheme heterojunction.
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Journal of Water Process Engineering
·
2023
·
IF 7
Yuxin Liu,Lin Chen,Jinwang Li,Rong Chen,Xun Zhu,Dingding Ye,Yang Yang,Qiang Liao
Photocatalytic fuel cell is a promising wastewater treatment technology, which can degrade pollutants and generate electricity simultaneously. However, the development of high-performance photoanode remains a challenge for photocatalytic fuel cells. Inspired by the bionic material of polydopamine, we propose to apply polydopamine to prepare the TiO 2 /g-C 3 N 4 photoanode for enhancing the adsorption of protonated g-C 3 N 4 nanosheets onto TiO 2 via electrostatic interaction, which greatly promotes charge transfer and inhibits electron-hole recombination. Moreover, the polydopamine particles can be converted into plenty of pores during the calcination process, which enhances light scattering and mass transfer. Consequently, the TiO 2 /g-C 3 N 4 photoanode prepared with polydopamine inspiration exhibits superior photoelectrochemical activity than the TiO 2 /g-C 3 N 4 photoanode prepared without using polydopamine and the pristine TiO 2 photoanode, presenting an improvement in the maximal power density by 8.7 % and 70.4 %, respectively. In addition, the effect of the adsorption time of the protonated g-C 3 N 4 nanosheets is also studied. It is shown that an excessive amount of the protonated g-C 3 N 4 nanosheets by increasing the adsorption time leads to more serious recombination and thereby decreases the photoanode performance. This study provides a novel and efficient way to prepare composite photoanode for photoelectrochemical applications.
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DIAMOND AND RELATED MATERIALS
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2025
·
IF 5.1
Wenjie Feng,Haoran Song,Guijing Li,Xiaofei Wang
In this work, a nanocrystalline/amorphous graphitic carbon nitride (g-C 3 N 4 ) nano-interlayer was formed in-situ between AlN substrate and Ag film through ultrasonic spraying combined with subsequent heat treatments . The interface mechanical behavior and failure mechanism of the novel AlN/Ag structures with different thicknesses of g-C 3 N 4 nano-layers were investigated using experimental and numerical simulation methods. Following four-point bending test, the debonded surfaces of Ag film and AlN were characterized by scanning electron microscopy (SEM) and transmission electron microscopy (TEM). The results demonstrated that the in-situ-formed g-C 3 N 4 nano-interlayer significantly improved the mechanical properties of the AlN/Ag interface due to the mechanical interlocking effect combined with the strong interfacial bonding strength . The g-C 3 N 4 nano-interlayer effectively relieved stress concentration near the Ag film and delayed the interfacial damage in the AlN/Ag structure, leading to significant improvement in interfacial fracture toughness . The thickness of g-C 3 N 4 nano-layers played a critical role in determining the mechanical performance of the AlN/Ag structure. Specifically, the structure with 90 nm thick g-C 3 N 4 interlayer exhibited the highest critical fracture energy G IC and maximum interfacial peeling stress σ max , with increases of 442 % and 132 %, respectively, compared with that without g-C 3 N 4 .
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DESALINATION
·
2026
·
IF 9.9
Xin Shi,Qiuyan Bi,Zizhen Peng,Zhicheng Wang,Yakai Lin,Wenzhong Ma,Chuanjie Fang,Chao Zhang,Shiai Xu
In situ SiO 2 growth with DA-g-C 3 N 4 co-doping yields hybrid crosslinked PA layer. • Compound strategy mitigates DA-g-C 3 N 4 aggregation in PA layer. • Achieved simultaneous gains in Mg 2+ /Li + selectivity and permeability performance. • MgCl 2 rejection stayed >93% over 160 h, demonstrating excellent long-term stability. It is often difficult for thin-film composite (TFC) nanofiltration (NF) membranes to balance high separation selectivity and high permeability, and the contradiction between the two will lead to their overall performance constraints. In this study, a dual-phase regulation strategy is proposed, which adopts the in-situ sol method and the composite strategy of introducing two-dimensional materials for the preparation of organic-inorganic cross-linked polyamide (PA) NF membranes. A trimesoyl chloride (TMC) organic phase solution containing tetraethyl orthosilicate was first introduced onto the polyethersulfone (PES) substrate, followed by contact with a polyethyleneimine (PEI) aqueous phase solution containing dopamine-functionalized carbon nitride (DA-g-C 3 N 4 ), during which silicon dioxide (SiO 2 )/Si–O–Si domains were generated in situ within the PA layer. These domains restricted the free volume of the PA layer, narrowed the effective pore-size distribution, and suppressed nonselective defects, while the embedded DA-g-C 3 N 4 improved the compatibility between the nanofillers and the PA layer, thereby producing P-1Si-0.025CN membranes with an effective pore size of 0.4 nm. Compared with the P-NF membrane prepared by reverse interfacial polymerization of TMC and PEI directly on the PES substrate, Mg 2+ /Li + separation factor (SF) increased to 67.2 (Mg 2+ /Li + mass ratio is 20), salt solution flux was 27.1 LMH, separation and permeation capacity of mixed salt was enhanced, salt solution flux has increased by 4 times, and the SF has increased by 7 times, Mg 2+ /Li + ratio decreased from 20 in feed to 0.71 in permeation process. Moreover, it exhibited excellent separation performance in diluted salt lake brine, with an Mg 2+ rejection rate exceeding 98%, and it also exhibited high fouling resistance and long-term stability. Download: Download high-res image (155KB) Download: Download full-size image
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Journal of Environmental Chemical Engineering
·
2026
·Vol. 14
·期 5
·124163
·
IF 7.5
Zhiyun Jiang,Mingjing Ge,Xiaoting Jie,Lixiao Ni,Shiyin Li
Efficient and durable activation of peroxymonosulfate (PMS) for the degradation of persistent organic pollutants remains challenging owing to the instability of active catalytic sites. Here, a Mn 3 O 4 @g-C 3 N 4 heterostructured catalyst (MCN-2) is constructed to enable efficient PMS activation and enhance the generation of non-radicals for rapid bisphenol A (BPA) degradation. MCN-2 preferentially adsorbs the peroxy oxygen atom of PMS, facilitating O-O and O-H bond cleavage to form the high-valent Mn-oxo species (Mn(IV)=O), which further reacts with PMS to yield singlet oxygen ( 1 O 2 ). The resulting 1 O 2 (60.5%) and Mn(IV)=O species (39.5%) synergistically drive rapid non-radical oxidation. Here, Mn 3 O 4 provides catalytic active sites, whereas g-C 3 N 4 enhances adsorption, shortens the mass-transfer distance between BPA and reactive oxygen species (ROS), and functions as an electron reservoir to sustain Mn redox cycling. Consequently, the synergistic 1 O 2 and Mn(IV)=O species system delivers a k-value of 0.258 min −1 for BPA degradation, which is 258 times and 6.45 times higher than that of the g-C 3 N 4 /PMS and Mn 3 O 4 /PMS systems, respectively. Moreover, MCN-2-based catalytic membranes enable stable BPA removal under continuous-flow conditions, and toxicity assessments demonstrate significantly reduced acute toxicity and mutagenicity of the transformation products, highlighting the potential for scalable and environmentally benign water treatment.
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Sustainable Materials and Technologies
·
2026
·
IF 9.7
Haize Jin,Ziyuan Wang,Kaiqiang Hong,Xiaoxia Huang,Qikun Wang
The construction of a synergistic adsorption-photocatalysis-peroxydisulfate (PDS) activation system holds great promise for efficient organic pollutants degradation. Herein, cetyltrimethylammonium bromide (CTAB)-modified geopolymer/Ag 9 (SiO 4 ) 2 NO 3 /g-C 3 N 4 (GACC) adsorbent-photocatalyst powder and porous membranes were rationally designed by combining geopolymerization and co-precipitation reactions. The CTAB was successfully introduced to endow the material with positively charged active sites via electrostatic anchoring and hydrophobic assembly. This enabled GACC to effectively capture of both negatively charged PDS and positively charged or zwitterionic moxifloxacin (MOX) species within a wide range of pH values. And the outstanding adsorption response capability of GACC exhibited rapid adsorption-degradation kinetic matching without pre-adsorption. The introduction of CTAB increased the specific surface area, and broadened the visible-light absorption range and reduced the band gap, thereby enhancing charge separation efficiency and facilitating PDS activation. Additionally, the fluorescence lifetime of GACC was found to be prolonged, and the electric double-layer capacitance (C dl ) results confirmed that CTAB facilitated the increase of available active sites. Under simulated sunlight, the GACC powder achieved a MOX removal efficiency of 93.67% within 10 min. Moreover, the GACC porous membranes prepared via H 2 O 2 foaming exhibited comparable degradation performance to powder counterpart (94.10% at 30 min). Furthermore, under dynamic conditions, these membranes exhibited excellent recyclability, highlighting their potential for practical applications. Mechanistic studies revealed that photogenerated electrons dominated PDS activation, while h + , ·OH, ·O 2 − , ·SO 4 − , and 1 O 2 collectively contributed to MOX degradation. This work provides a promising strategy for designing high-performance monolithic adsorbent-photocatalyst systems with synergistic adsorption-photocatalysis-PDS activation for efficient and sustainable wastewater treatment.
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Acta Biomaterialia
·
2026
·
IF 10.4
Li Yang,Xue Chen,Yuanhang Li,Xudong Xie,Chaolin Liu,Zhengjian Qi
Endoplasmic reticulum (ER)-mitochondria interplay shapes tumor fate, with Ca²⁺ homeostasis serving as a critical node linking these organelles. Here, we engineered a TTO photosensitizer (PS) that recognizes G-quadruplex (G4) in mitochondria through conformationally restricted π-π interactions, thereby potentiating photodynamic therapy (PDT)-mediated interference with Ca²⁺ homeostasis. Hemin was electrostatically co-assembled with TTO and hyaluronic acid-polyethyleneimine (HA-PEI) copolymer to generate lethal hydroxyl radicals (·OH) that magnify PDT-induced oxidative damage, while the HA-PEI component enables tumor-specific delivery. With this synergy, TTO-Hemin@HA-PEI ( TH@HP ) propagates PDT influence to provoke ER stress and dysregulate the inositol 1,4,5-trisphosphate receptor (IP 3 R)-glucose regulator protein 75 (GRP75)-voltage-dependent anion channel 1 (VDAC1)-mitochondrial calcium uniporter (MCU) Ca 2+ -transfer axis at the mitochondria-associated ER membrane (MAM), leading to MAM remodeling. This self-amplifying pathological loop is characterized by persistent ER Ca²⁺ leakage to mitochondria and cytoplasm via MAM, which impairs adenosine triphosphate (ATP) synthesis, disables energy-dependent Ca²⁺ feedback regulation, and ignites a systemic Ca²⁺ storm, thereby activating markers of immunogenic cell death (ICD) and converting mitochondrial damage into pro-immunogenic signals that drive melanoma immune infiltration. Collectively, this effort reveals a feed-forward mechanism between mitochondrial impairment and ER-driven ICD, offering a compelling paradigm for mitochondria-targeted multimodal therapies. Statement of Significance In this contribution, a multimodal anti-melanoma nanoplatform was engineered to follow the causal chain: G-quadruplex (G4) coupling and biocatalytic reactions-photodynamic therapy (PDT) amplification-Ca 2+ storm-immune response activation. It has verified that existing mitochondrial-targeted immunogenic cell death (ICD) involves a mechanism where single organelle stimulus while multiple organelles execute responses. Furthermore, a functional association exists between mitochondrial damage and endoplasmic reticulum-driven ICD through mitochondria-associated endoplasmic reticulum membrane (MAM). Simultaneously, this research furnishes comprehensive theoretical and experimental evidence for PDT amplification mechanism following G4 interaction. It is the first time in our known research that rationale and advantages of G4 targeting in PDT applications have been proposed, and we believe it will carry substantial reference for subsequent studies. Download: Download high-res image (369KB) Download: Download full-size image
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