Solar RRL
·
2026
·Vol. 10
·期 1
·e202500878
·
IF 4.8
Tianci Chen,Jie Yu,Neng Hu,Weijia Wang,Lin Lei,Huiqing Fan,Peter Müller-Buschbaum,Qi Zhong
Enhanced photocatalytic hydrogen (H 2 ) evolution is realized by improving light harvesting via the multiscattering of incident light from embedded cellulose nanocrystal (CNC) nanoparticles in hybrid hydrogels. Due to the different refractive indices of CNC nanoparticles and hybrid acrylate-based hydrogels, instead of direct penetration through the hybrid hydrogels, the incident light can be multiscattered by the CNC nanoparticles in the hybrid hydrogels. It significantly improves the light harvesting capability and favors the photocatalytic H 2 evolution. In addition, the CNC nanoparticles possess a certain number of negative charges, which is beneficial for the efficient separation of photogenerated charge carriers and enhancement of H 2 evolution performance. Hence, the averaged H 2 evolution rate of hybrid hydrogels embedded with 0.5 wt% of CNC (CNC 0.5 ) can reach 2266 μmol g −1 h −1 , which is 154% of that of the hybrid hydrogels without CNC nanoparticles. Further increasing the amount of embedded CNC nanoparticles, the photocatalytic H 2 evolution is reduced. It can be attributed to the aggregation of nanoparticles, which reduces the specific surface area and lowers the light harvesting. Based on the improved H 2 evolution performance, the g-C 3 N 4 /Pt hydrogels embedded with CNC nanoparticles can be used for H 2 production in areas rich in solar energy but lack of water.
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高影响因子
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
·
2026
·
IF 9.2
Qingsong Liu,Yan Zhu,Wentao Li,Junci Wu,Yi Zhang,Shouchun Ma,Chuanli Qin
Modified graphitic carbon nitride (MCN) was synthesized via calcinating β-alanine introduced melamine supramolecular precursors and poly(3-methylthiophene-co-fluorene) (P(3MT-co-F)) with improved planarity was prepared by polymerization of 3-methylthiophene (3MT) and fluorene (F) monomers. P(3MT-co-F)/MCN heterojunction was constructed by electrostatic self-assembly and the optimal 3P(3MT 1 -co-F 1 )/MCN exhibits excellent H 2 production performance of 11108 μmol h −1 g −1 under visible light, 150 times higher than MCN. The enhancement is attributed to the following aspects: First, F monomer as a rigid unit can regulate the main-chain torsion of P(3MT-co-F), enhancing planarity and facilitating intramolecular charge transport within copolymer. Second, N⋯S interactions and π-π stacking interactions at heterojunction interface improve the charge transfer and separation. Third, the incorporation of P(3MT-co-F) with narrow band gap into MCN not only broadens visible light absorption range and enhances visible light response, but also forms a Z-scheme heterojunction with MCN, further enhancing the charge separation and retaining the electrons with strong reducibility.
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高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2026
·
IF 5.4
Mingyong Wang,Taiguang Li,Guanxiang Ma,Kai Xuan,Yongmei Hao
Polycyclic aromatic hydrocarbons(PAHs), as a kind of persistent organic pollutant, pose serious threat to humans and organisms’ health. In this work, cobalt oxide/g-C₃N₄ composites with low cobalt content (≤0.5 wt%) were prepared via a high-temperature solid-phase method for visible-light-driven catalytic activation of peroxymonosulfate (PMS), as an efficient system, to degrade PAHs in water. It is noteworthy that this work systematically studied the properties of the prepared materials and the mechanism of active species generation for pollutant degradation. The material forms a p-n heterojunction structure and exhibits visible light absorption. Under conditions where both the catalyst and PMS concentrations are 100 mg/L, near-complete degradation of 0.2 mg/L phenanthrene(PHE) can be achieved within 35 min. Mechanistic studies revealed that the mainly combined contribution of active species are 1 O 2 and O •— 2 , indicating that the degradation process involves both radical and non-radical pathways. After 5 cycles, the material retained 80% degradation efficiency while maintaining structural stability and minimal cobalt leaching, providing a feasible approach for developing stable and efficient heterogeneous photocatalysis-PMS systems. Download: Download high-res image (200KB) Download: Download full-size image
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高影响因子
Surfaces and Interfaces
·
2026
·
IF 6
Jiyuan Zhang,Yifan Yang,Zhengtong Zhu,Rui Cao,Mengchao Feng,Qiang Li,Guojun Ji,Jianbin Zhang
A g-C 3 N 4 @(H/C-CdS) photocatalyst via a microinjection titration-stirring strategy. • g-C 3 N 4 suppressed H/C-CdS nanoparticle agglomeration enhancing active site exposure. • CS 2 SM-modified CdS crystallization improved charge transfer and defect regulation. • To achieve 78.37 % TC degradation in 60 min under sunlight. The development of efficient photocatalysts for visible-light and solar-driven degradation of wastewater treatment containing antibiotics remains a significant challenge. Here, this work reports a novel g-C 3 N 4 @(H/C-CdS) catalyst synthesized via a facile microinjection titration-stirring strategy based on a dual-interface design. Through comprehensive morphological and structural characterization, the catalyst demonstrated optimized two-dimensional layered structures, enlarged specific surface areas, and narrower band gaps, which were essential for its superior photocatalytic activity. The system simultaneously established a semiconductor heterojunction between g-C 3 N 4 and CdS as well as a Z-scheme interphase junction between hexagonal and cubic CdS, effectively facilitating charge separation and transfer. Notably, the incorporation of CS 2 -storage material (CS 2 SM) as a crystallization modifier precisely controlled CdS crystal phases and defect states. Benefiting from these structural and electronic properties, the composite achieved efficient cycling stability and remarkable photocatalytic degradation efficiency for 150 mg/L tetracycline, achieving degradation rates of 76.08% under visible light and 78.37% under natural sunlight within 60 min. This work provides detailed insights and a solid foundation for designing advanced dual-interface photocatalysts for solar-driven wastewater treatment. Download: Download high-res image (270KB) Download: Download full-size image
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高影响因子
NANO
·
2024
·
IF 1
Xiaozhong Shi,Bin Zhao,Siqin Sun,Linzhen Wu,Ling Zhang,Youkui Zhang,Tao Duan
Graphitic carbon nitride (g-C 3 N 4 )-based materials are considered promising catalysts for organic waste photodegradation due to their excellent photocatalytic activity and stability. Herein, a ternary thin layer system based on g-C 3 N 4 was prepared by hexagonal boron nitride (h-BN) deposition followed by liquid phase ultrasonic stripping and Ag deposition (marked as Ag-BCN), which increased the specific surface area of g-C 3 N 4 , expanded the corresponding range of the visible-near-infrared spectrum of g-C 3 N 4 and promoted the photo-generated electron–hole pair separation in g-C 3 N 4 to improve the photocatalytic efficiency of pure g-C 3 N 4 . The results showed that after deposition of h-BN and Ag into bulk g-C 3 N 4 and liquid phase ultrasonic stripping, the efficiency of photocatalytic degradation of tannic acid (TA) was enhanced. The efficiency of photocatalytic degradation of TA by Ag-BCN-2 was 84.3% at 90 min, which was 1.6 times the efficiency of bulk g-C 3 N 4 .
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高影响因子
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
·
2022
·
IF 7.926
Meng Qiao,Lujing Fu,Damia Barcelo
Polycyclic aromatic hydrocarbons (PAHs) ubiquitously exist in aqueous environment , posing considerable chronic and acute ecological risk to aquatic species. Non-metallic photocatalyst g-C 3 N 4 is a promising photocatalyst that can be used in river remediation under visible light irradiation. The removal of a typical PAH phenanthrene (PHE) by g-C 3 N 4 under visible light was detailed studied. The removal efficiency of PHE (initial concentration 5 mg/L) by g-C 3 N 4 -nano sheet (NS) (1 g/L) reached 100% within 10 min under visible light. Reactive oxygenated species, including •O 2 - , 1 O 2 , and •OH, were generated in the g-C 3 N 4 -NS/visible light system. •O 2 - and 1 O 2 were determined as the main active species , whereas photoelectric-hole and •OH were also involved in the reaction. The effects of co-existed substances were investigated, including humic acid (HA), Cl - , and NO 3 - . HA decreased the removal rate of PHE, probably due to its reaction with photo-generated holes. Cl - with lower concentration (0.2 – 10.0 mmol/L) decreased the removal rate of PHE, while with higher concentration (20 mmol/L) increased the removal rate of PHE, probably because of the interaction of Cl - with •OH. NO 3 - with the concentration of 10–100 μmol/L did not significantly affect the removal rate of PHE. This study will provide a possible in-situ route for the removal of typical PAHs in urban river environment.
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高影响因子
JOURNAL OF ENVIRONMENTAL MANAGEMENT
·
2022
·
IF 8.91
Chengze Yu,Jiaqi Hou,Bin Zhang,Shiqi Liu,Xiangrui Pan,Heng Song,Xiangting Hou,Qinghua Yan,Chengzhi Zhou,Guocheng Liu,Yingjie Zhang,Yanjun Xin
The dual-chamber photoelectrocatalytic (PEC) system possess advantages in the degradation efficiency and processing cost of organic contaminants . In this study, TiO 2 nanotube arrays modified by rGO and g-C 3 N 4 (rGO/g-C 3 N 4 /TNAs) photoelectrodes were successfully prepared. The surface micromorphology , chemical structure, crystal structure, and basic element composition of rGO/g-C 3 N 4 /TNAs photoelectrodes were studied by SEM , FTIR, XRD , Raman, and XPS . UV–vis absorption, photoluminescence (PL) spectra, and photoelectrochemical (PECH) tests were used to explore the photoelectrochemical characteristics of rGO/g-C 3 N 4 /TNAs photoelectrodes. Under simulated sunlight illumination, the dual-chamber PEC system with external bias voltage was used to investigate the degradation of oxytetracycline (OTC) on rGO/g-C 3 N 4 /TNAs photoelectrodes. The results showed that rGO and g-C 3 N 4 were successfully loaded on TNAs, and the separation efficiency of electrons and holes at rGO/g-C 3 N 4 /TNAs photoelectrodes was improved. The light absorption range of rGO/g-C 3 N 4 /TNAs photoelectrodes extends to the visible light region and has better light absorption performance. Compared with the photocatalytic process, when 1.2 V bias voltage was applied, the degradation efficiency of OTC in anode and cathode chambers in PEC were increased by 3.28% and 44.01% within 60 min, respectively. In addition, the anode and cathode chambers have different degradation effects on OTC. Both the external bias voltage and initial pH have significant effects in cathode chamber, but have little effect in photoanode chamber. The fluorescence excitation-emission matrix spectra and liquid chromatography-tandem mass spectrometry showed that there were different intermediates in the degradation process of OTC. This study indicated that for the dual-chamber PEC system, rGO/g-C 3 N 4 /TNAs photoelectrodes exhibited excellent photocatalytic performance and have potential application prospects in water environmental remediation.
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PubMed
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2022
·
IF 5.518
Jinming Chen,Powei Gu,Yuting Guan,Haifeng Su
Herein, an effective solid-state pyrolysis method was employed to synthesize CeO 2 (Ce)/biomass carbon(C)@g-C 3 N 4 photocatalyst , which was then used to degrade methylene blue (MB) with high efficiency under visible light irradiation. After 60 min of visible light irradiation, the MB removal rate of Ce/C@g-C 3 N 4 composite photocatalyst reached 96.8%, while the MB removal rates of CeO 2 and g-C 3 N 4 were only 37.8% and 56.3%, respectively. According to the BET and PL results, the Ce/C@g-C 3 N 4 composite material possesses a specific surface area and a low electron-hole recombination rate. The findings of free radical capture experiments and ESR analysis indicated that electron-holes (h + ) and superoxide radicals (•O 2− ) are the most active groups in photodegradation reactions using Ce/C@g-C 3 N 4 composite. Furthermore, after five consecutive cycles, the photocatalytic activity of the Ce/C@g-C 3 N 4 composite material remained steady. This work provides a facile approach for the fabrication of highly stable Ce/C@g-C 3 N 4 photocatalyst with high photocatalytic activity making it a promising material for the photodegradation of methylene blue under visible-light conditions.
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高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2022
·
IF 9.965
Jingxuan Pei,Yibo Sun,Xiang Yu,Zhenfei Tian,Shuting Zhang,Songbo Wei,Yanfang Zhao,Rabah Boukherroub
Development of reliable sensing strategy combining surface-enhanced Raman scattering (SERS) and surface-assisted laser desorption/ionization-mass spectrometry (SALDI-MS) is of significant interest to distinguish cysteine enantiomers in body fluid for understanding their physiological roles and toxicity hazards. In this work, a SERS/SALDI-MS dual-mode sensing platform of gold nanoparticles (Au NPs) decorated holey carbon nitride (hg-C 3 N 4 ) was fabricated for sensitive detecting cysteine. The designed Au@hg-C 3 N 4 matrix featured a uniform distribution of Au NPs with the help of anchoring effect of hg-C 3 N 4 holey structure, which was conducive to produce highly repeatable signals. Moreover, the combination of Au NPs and holey g-C 3 N 4 endowed this matrix with superior enrichment capacity, enhanced charge transfer and strong UV absorption. These merits allowed the matrix to acquire high sensitivity and enhanced reproducibility for l -cysteine by means of SERS/SALDI-MS. Likewise, reliable detection of l -cysteine and efficient recognition of d -cysteine in human serum jointly revealed its prospect for detecting cysteine enantiomers in body fluids. This work offers a reliable SERS/SALDI-MS strategy for determining L/D-cysteine enantiomers, and the designed Au@hg-C 3 N 4 matrix becomes a potential application candidate for selective detection of bio-enantiomers.
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PubMed
高影响因子
Nano Energy
·
2022
·
IF 19.069
Feng Lin,Shuang Zhou,Guohong Wang,Juan Wang,Tengyuan Gao,Yaorong Su,Ching-Ping Wong
g-C 3 N 4 (CN) has been widely explored as a visible light photocatalyst . Nevertheless, the low structural ordering of CN suffers from high-density defects that resulting in poor charge separation efficiency. Therefore, increasing the crystallinity of CN is considered to be an efficient approach to enhance its photocatalytic activity . However, crystalline g-C 3 N 4 (CCN) synthesized via ionothermal method exhibits one-dimensional (1D) nanorod structure and is prone to agglomerate due to its high surface energy, giving rise to unsatisfactory performance improvement. Herein, the 1D carbon nanofibers/crystalline g-C 3 N 4 heterojunction photocatalyst (CNF/CCN) is obtained through electrostatic self-assembly combined with microwave heating strategy. The CNF/CCN sample shows an enhanced photocatalytic H 2 evolution rate (HER) of 6398 µmol g −1 h −1 , which is up to 16.0 and 2.6 times of CN and CCN, respectively. The enhanced HER performance of CNF/CCN is attributed to the improved crystallinity of CN, promoted visible light utilization, large specific surface area and efficient charge transfer across the interface between CNF and CCN. This work conveys a simple and general method for crystallinity and activity enhancement for a wide range application of CN.
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高影响因子
NEW JOURNAL OF CHEMISTRY
·
2022
·Vol. 46
·期 36
·17438-17455
·
IF 3.925
Qingcan Xiang,Zongxue Yu,Xuyang Li,Pingquan Wang,Niandan He,Yao Pang,Qiuxiang Wang,Yucheng Liu
A g-C3N4/NH2-MIL-88B(Fe)/CD@GO membrane (M2) was prepared by a simple vacuum filtration method. By embedding a Z-scheme heterojunction composite photocatalyst into graphene oxide (GO) nanosheets, not only can the water molecule transport channel be regulated, but the membrane can also be endowed with photocatalytic activity and membrane fouling is effectively alleviated. The pure water permeation flux of M2 (253.26 L m−2 h−1 bar−1) was 13 times that of the original GO membrane (18.83 L m−2 h−1 bar−1). What's more, even after 10 cycles, M2 still maintains excellent separation efficiency and flux. After six cycles, the rejection of Congo Red (CR), Malachite Green (MG) and Rhodamine B (RhB) by M2 was over 95%. At the same time, under the conditions of an extreme pH value and high salt concentration, the rejection of dye remained at the original level after six cycles. Therefore, the novel photocatalytic membrane has excellent separation performance, stability and photocatalytic activity, and can be used as a potential membrane for wastewater purification and environmental protection.
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高影响因子
JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY
·
2022
·Vol. 103
·期 3
·876-889
·
IF 2.606
Luo Qiuzi,Sun Yihua,Lv Xin,Huang Long,Fang Liang,Wang Rui
Al and Ga were co-doped into ZnO lattice (AGZ) by the sol–gel method. Herein, graphite carbon nitride (g-C 3 N 4 ) was synthesized by using the thermal decomposition method, which was used to integrate with the obtained AGZ to create direct Z-scheme Al/Ga co-doping biphasic ZnO/g-C 3 N 4 heterojunction by the simple single-phase dispersion method. The synthesized catalysts of composition, optical properties, topography structure and chemical state of element of the prepared AGZ/g-C 3 N 4 composites were analyzed by XRD, FT-IR, UV, PL, TEM and XPS respectively. The results have shown that the combination of AGZ and g-C 3 N 4 to form a direct Z-type heterojunction can effectively reduce the band gap of AGZ, thereby shifting the absorption edge to the visible light region. The PL spectroscopy study of the synthesized sample found that, compared with bare g-C 3 N 4 or AGZ catalyst, AGZ/g-C 3 N 4 significantly reduced the recombination of photogenerated electrons and holes, thereby ensuring that more reactive groups participate in the dye degradation process. The degradation experiment of methylene blue(MB) dye verifies that the AGZ/CN sample has excellent photocatalytic performance. Al/Ga co-doped ZnO/g-C 3 N 4 catalyst showed the maximum photocatalytic MB degradation of 95.4% after 150 min in visible light illumination, while the degradation efficiency of ZnO and g-C 3 N 4 are only 30.5% and 50.1%, respectively. It have observed that ·O 2 − , ·OH and h + radicals were the main active species that affect the photocatalytic degradation of dyes by radical trapping experiment. In addition, the heterojunction formed by AGZ and g-C 3 N 4 inhibited the photocorrosion of ZnO, which was confirmed by these five consecutive dye degradation tests. At the same time, in order to determine the optimal compounding ratio, four groups of AGZ/CN with different ratios were prepared. It was found that AGZ/CN15 has the highest catalytic efficiency, and the degradation of MB reached 94% within 2.5 h. This work will open up a new path for the development of more effective photocatalysts for organic matter treatment.
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危险品化学品经营许可证（带存储）