JOURNAL OF APPLIED POLYMER SCIENCE
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2026
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IF 2.8
Zhangxu Chen,Fanli Meng,Hongyun Ren,Lifen Zhang,Minglian Fu,Danchen Zhu
A key factor limiting the photocatalytic performance of pure graphitic carbon nitride (g-C 3 N 4 ) is the swift recombination of photogenerated electron–hole pairs. To address this issue, the ZnO/g-C 3 N 4 composites were synthesized via a one-step calcination method. Their structure, composition, and morphology being characterized by X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR), and scanning electron microscopy (SEM). An L 16 (4 5 ) orthogonal array was employed to investigate the effects of various factors on the removal efficiency. The results exhibit that under optimal conditions (sunlight irradiation time: 20.0 h, pH: 7.00, catalyst dosage: 40 mg, ZnO/g-C 3 N 4 mass ratio: 4:1), the methylene blue removal rate reached 92.36%. Comparative experiments demonstrated removal efficiencies of 43.64% for phenol, 52.13% for tetracycline, and 40.26% for pyridine, respectively. Moreover, the removal rate of methylene blue can still reach 90.12% after five cycles. Trapping experiments for active species confirmed that photogenerated electrons and holes are critical for methylene blue degradation. ZnO doping g-C 3 N 4 improves the methylene blue removal performance of g-C 3 N 4 , providing a facile strategy for developing g-C 3 N 4 /metal oxide heterostructure to deal with emerging contaminants in the future.
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高影响因子
Advanced Optical Materials
·
2026
·
IF 7.2
Zhiheng Liu,Hulin Wang,Runchao Dong,Jia Zhang,Hongxin Yin,Genqiang Liu,Weijun Li,Dongdong Zhang,Marko Gloginjić,Marko Erich,Weiyou Yang,Srdjan Petrović,Shanliang Chen
The precise tailoring of bandgap structures as well as carrier separation and transport behavior via heterojunction engineering can provide a practical and viable pathway for enhancing the performance of low-dimensional semiconductor devices. In this study, a highly photosensitive photoelectrochemical (PEC) ultraviolet (UV) photodetector (PD) based on a SiC/ZnO heterojunction is explored. The surfaces of SiC nanowires are successfully modified using high-quality ZnO nanospheres via a simple hydrothermal process. The as-constructed SiC/ZnO heterojunction nanowire PEC UV PD achieves high photodetection performance—high responsivity (15.76 mA W −1 ), high detectivity (1.827 × 10 10 Jones), excellent external quantum efficiency (5.21%), and fast rise/decay times (186/454 ms), under 375-nm UV illumination. Remarkably, the device exhibits a high photoresponse under different solution concentrations, temperature conditions, and excellent aging stability over long-term operation. Its highly sensitive and reliable photodetection performance could be attributed primarily to the synergy among the type-II charge transfer pathways formed at the SiC/ZnO heterojunction, enhanced photogenerated-carrier separation efficiency, and improved light–matter interactions enabled by the large specific surface area of the ZnO nanospheres. Overall, this study establishes a paradigm for developing highly sensitive PEC PDs suitable for optical communication under harsh underwater conditions, thereby advancing heterojunction and interfacial engineering strategies for next-generation optoelectronics.
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NANO
·
2020
·
IF 1.566
Dan Wang,Jian Ni,Jiayi Guan,Xiaojun Zhou,Shuaiyuan Zhang,Yaofang Zhang,Qian Huang,Hongkun Cai,Juan Li,Jianjun Zhang
Organic–inorganic hybrid perovskite solar cells have become one of the highly promising candidates for photovoltaic technologies because of their low processing cost, rapid-growing power conversion efficiency and easy preparation process. Electron transfer layer (ETL) plays an important role in exciton separation and charge transport for perovskite devices. A TiO 2 –ZnO binary mixed nanoparticle (NP) ETL, which can be prepared in low-temperature hydrothermal method, was proposed. By analyzing the XRD and SEM, the incorporation of mixed NPs thin film improved the interfacial stability of ZnO/perovskite and prevented the perovskite layer from being decomposed as compared to the pure ZnO NPs thin film. Furthermore, UV spectrum and EIS results show that TiO 2 –ZnO mixed NP ETL has high transmittance and maintains good electrical properties of pure ZnO NPs basically. Finally, the efficiency of perovskite device based on TiO 2 –ZnO mixed NP ETL was improved to 15%. Our research provides a simple way for the application of ZnO in PCSs.
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CHEMICAL ENGINEERING JOURNAL
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2022
·
IF 16.744
Xiong Zhao,Hongqiang Chen,Yaxuan Xiao,Jinhua Zhang,Yinan Qiu,Jinjia Wei,Nanjing Hao
Acoustofluidic micromixers have attracted considerable attention in recent years due to their unique features in terms of flexible control, contactless operation, and short mixing distance. However, optimizing geometry in acoustic micromixers to achieve robust mixing performance towards practical chemical engineering is still a great challenge. Herein, we first propose flower-like sharp-edge acoustic micromixers for developing functional 3D ZnO nanorod array. Numerical simulation and experimental validation are conducted to investigate the effect of petal numbers, spreading angles, and tip angles on the mixing performance. Generally, more petals need a larger spreading angle to achieve better mixing while a large spreading angle is unfavorable, and the mixing performance decreases with the increase of tip angles. Compared to single sharp-edge devices, flower-like sharp-edge ones always perform better mixing efficiency. The optimized device is utilized to synthesize well-defined 3D ZnO nanorod array inside a glass capillary and the excellent capabilities of photodegradation of dye and enrichment of heavy metal ions are examined. The photodegradation and enrichment efficiencies can be well regulated by adjusting the flow rates, and superior reusability of the engineered ZnO nanorod array is validated. These results not only provide important guidelines for the rational design of lab-on-a-chip devices, but also shed light on controllable synthesis of functional nanomaterials and other chemical engineering fields.
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高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
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2017
·
IF 3.133
Min Zhong,Wenming Guo,Chanlun Li,Lei Chai
Vertically well-aligned ZnO nanorod arrays were synthesized on silicon substrate by a novel polymer soft template method . The ZnO nanorod arrays have been deposited by immersing a silicon substrate into an aqueous solution containing Zn(CH 3 COO) 2 ·2H 2 O, Polyvinylpyrrolidone (PVP) and NH 3 ·H 2 O at 99 °C and then being annealed in oxygen atmosphere. The effects of reaction conditions on the morphology, structure and optical properties of ZnO nanostructures were investigated. The morphology of ZnO nanostructures was demonstrated to be controllable by adjusting the pH values of PVP-Zn 2+ complex solution, zinc acetate concentration and growth time, respectively. The nanorod arrays were hexagonal zincite ZnO and the c-axis orientation growth trend of ZnO became more and more obvious with increasing the pH values of PVP-Zn 2+ complex solution from 7.5 to 10.5, the zinc acetate concentration from 5 mM to 200 mM, and the growth time from 1 h to 3 h, respectively. The concentration of deep level defects in ZnO was reducing with increasing the pH values of PVP-Zn 2+ complex solution, zinc acetate concentration and growth time, respectively. A growth mechanism of vertical ZnO nanorod arrays based on PVP soft template is proposed.
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高影响因子
APPLIED SURFACE SCIENCE
·
2026
·
IF 6.9
Bicai Li,Yaxi Xiao,Yingjie Tan,Hongrui Zhao,Yi Huang,Guowen He
Landfill leachate, a complex refractory wastewater rich in high-concentration dissolved organic matter (DOM), resists conventional biochemical treatment and threatens aquatic ecosystems and human health. Developing efficient, stable DOM remediation technologies remains urgent. Herein, four ZnO photocatalysts with distinct morphologies (rod-like ZnO-1, flower-like ZnO-2, needle-like ZnO-3, rod-like arrayed ZnO-4) were synthesised via magnetron sputtering pretreatment combined with hydrothermal reaction. Characterisations showed ZnO-1 had a high oxygen vacancy density (62.05 %) and efficient photogenerated electron-hole separation. After 90 min of photocatalysis, ZnO-1 achieved the highest TOC (36.84 %) and DOM (63.16 %) degradation efficiencies, outperforming other samples. All catalysts preferred fulvic-like substance degradation over protein-like ones. Hydroxyl radicals (·OH) were the primary active species, synergising with superoxide radicals (·O 2 – ) and photogenerated holes ( h + ) to degrade DOM via C=C cleavage, aromatic ring opening and mineralisation. ZnO-1 retained >30 % activity after four cycles. This work provides a high-performance catalyst for refractory DOM remediation and guides morphology-controlled semiconductor catalyst design for complex wastewater treatment.
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COMPOSITES PART B-ENGINEERING
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2026
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IF 14.2
Zhaoping Jia,Yufan Zhou,Ruiyao Xiao,Jiandu Lei,Jing Liu
Layered double hydroxides (LDHs) have emerged as promising photocatalysts for effective pollutant degradation in wastewater treatment. In this study, a visible-light-responsive ZnO/In 2 O 3 composite photocatalyst incorporated with biomass-derived carbon ( [email protected] ) was synthesized via controlled calcination of Zn/In-containing binary LDH precursors with biomass carbon sources. The optimized [email protected] composite demonstrated remarkable performance in synergistic adsorption and photocatalytic degradation of crystal violet (CV), achieving high degradation efficiency (97.46 %) for 2000 mg/L CV under 460 nm LED light - significantly superior to the 54.79 % efficiency of pristine ZnIn-LDO. The photodegradation kinetic constant of [email protected] was 8.4 times higher than that of ZnIn-LDO. Systematic characterization revealed that the optimal BC incorporation engineered the optical and surface properties: it narrowed the bandgap, enhanced visible-light absorption, increased specific surface area, and most importantly, drastically promoted the separation and transfer of photogenerated carriers. Mechanistic studies identified that the improved charge dynamics drive an efficient oxygen reduction pathway, where superoxide radicals (·O 2 − ) and hydroxyl radicals (·OH), generated via H 2 O 2 intermediates, serve as the dominant active species. The degradation intermediates exhibited reduced phytotoxicity. This work provides a novel strategy for developing high-performance LDH-based photocatalysts by coupling biomass carbon to optimize interfacial charge separation and reaction kinetics.
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Journal of the Taiwan Institute of Chemical Engineers
·
2026
·
IF 6.9
Abrar Hussain,Ndumiso Vukile Mdlovu,Kuen-Song Lin,Chi-Jung Chang,Amin Hussain
Background The conversion of CO 2 into value-added fuels and chemicals remains one of the major challenges in catalysis and sustainable energy research. Developing efficient catalysts for CO₂ hydrogenation to methanol and dimethyl ether (DME) is essential for reducing greenhouse gas emissions and promoting carbon recycling. Methods In this work, a Zr-modified CuO–ZnO–Al₂O₃ (CZZA) catalyst was synthesized via a co-precipitation method for CO 2 hydrogenation. The catalyst systems “CZZA/HZSM-5-L” and “CZZA/com-HZSM-5” represent Zr-modified CZZA physically integrated with loofah-templated and commercial HZSM-5 (Si/Al = 25), respectively. A bio-HZSM-5 catalyst was also prepared using loofah sponge and rice husks as dual biotemplates to promote methanol dehydration into DME. The novelty lies in (i) the dual-biomass templating strategy (silica-rich rice husk vs. low-silica loofah) to achieve macro– meso –micro hierarchies while retaining MFI crystallinity, and (ii) Zr-promotion of the Cu–ZnO–Al₂O₃ matrix to enhance Cu⁺/Cu²⁺ and Cu–Zn interfacial sites, enabling efficient one-pass CO₂ → MeOH → DME conversion at 280 °C and 30 bar. Significant findings Zr incorporation significantly improved the structural and electronic properties of the CZZA catalyst, leading to enhanced surface area, active site dispersion, and CuO–ZnO interfacial synergy. Among all tested catalysts, the CZZA/HZSM-5-L bifunctional catalyst achieved the highest DME yield (13.2 %), DME selectivity (58.6 %), and CO₂ conversion (22.5 %) at 280 °C and 30 bar. An economic evaluation of 5- and 10-ton-per-day (TPD) DME production using refinery waste CO₂ showed payback periods of 2.98 and 2.44 years, respectively. Sensitivity analysis (±20 % variation in H 2 and DME prices) confirmed the payback remained below 4 years, demonstrating the technical and economic viability of the developed Power-to-DME process.
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高影响因子
Materials Today Communications
·
2026
·
IF 4.9
Yan-Ting Chen,Hao Xu,Ming-Hui Li,Yong-Jian Zhang,Chao-Fei Guo,Xue-Juan Yang,Yu-Xuan Wang,Xi-Ping Luo
A ternary ZnO/CuO/cellulose-derived carbon (CBC) heterostructure was synthesized via a one-step hydrothermal process for efficient room-temperature detection of ammonia (NH 3 ) with effective selectivity. The integration of n-type zinc oxide and p-type copper oxide within the conductive CBC network facilitates rapid charge transfer while providing abundant adsorption sites. Characterization by XRD, XPS, and TEM confirmed the presence of crystalline ZnO and CuO species uniformly dispersed throughout the porous CBC matrix. The composite sensor demonstrated a response value of 29.2% to 100 ppm NH 3 , with rapid response and recovery times (38 s and 41 s). UV-Vis diffuse reflectance spectroscopy indicated a reduced bandgap (3.10 eV), suggesting enhanced visible-light absorption and improved charge separation. The sensor exhibited reasonable repeatability over a 30-day continuous detection cycle in a 200 ppm ammonia environment. In addition, the sensor maintained stable response characteristics over five consecutive sensing cycles at 200 ppm NH 3 . The synergistic effect of p-n heterojunctions combined with the conductive CBC framework effectively enhances surface reactivity. Meanwhile, although the composite features a flexible and biodegradable carbon backbone, its integration potential for wearable Internet of Things (IoT) devices remains to be thoroughly investigated, and further optimization of mechanical endurance is required before practical application. Overall, this low-cost, eco-friendly composite meets the urgent demand for timely ammonia detection in areas such as environmental assessment.
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高影响因子
NANO
·
2026
·
IF 1.3
Mingjiao Hu,Yanlu Long,Xutao Ning,Bin Zeng
In this study, a novel ternary photocatalyst, composed of BiOCl, ZnS, and ZnO, was successfully prepared for the first time via a mixed method followed by thermal treatment, which possessed a dual Type-II heterojunction structure. This composite exhibited substantially boosted photocatalytic degradation efficiency toward tetracycline (TC) under simulated sunlight. The microstructure, crystal morphology, charge transfer properties, and optical absorption behavior of the composite were systematically characterized and analyzed. The results demonstrated that the dual type-II heterojunction formed among ZnS, ZnO, and BiOCl effectively broadened the light absorption range and promoted the separation of photogenerated carriers, thereby significantly enhancing the photocatalytic activity. Active species trapping experiments and ESR tests confirmed that ·OH and ·O 2 - were the main active species in this photocatalytic system. The degradation efficiency of TC by this ternary catalyst under visible light reached as high as 95.8%, and it still maintained excellent stability after five consecutive cycles. Band structure analysis further revealed the charge separation mechanism in the dual type-II heterojunction. This novel dual type-II heterojunction is expected to provide new insights into the efficient degradation of pharmaceutical pollutants.
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高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
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2025
·
IF 5.4
Xue-Ying Wan,Yang Zhao,Hui-Zhan Wen,Hai-Tao Zhang,Zha-Xi Wan-Mo,Yu-Long Xie,Lun Pan
The widespread use of ciprofloxacin antibiotics poses substantial environmental and health threats due to their persistence in aquatic ecosystems. In this study, a light-responsive MgFe 2 O 4 /ZnO (MFOZ) composite was synthesized via a co-precipitation method for activating peroxymonosulfate (PMS) to degrade ciprofloxacin (CIP). The constructed heterojunction structure, with MgFe 2 O 4 nanoparticles uniformly anchored on ZnO, significantly increased the specific surface area (51.94 m 2 ·g −1 ) and enhanced light absorption, narrowing the bandgap to 2.91 eV. This unique configuration facilitated the separation of photogenerated charge carriers, as evidenced by a higher photocurrent density and lower electrochemical impedance compared to the individual components. Under light irradiation, the MgFe 2 O 4 /ZnO/PMS system achieved a 95 % CIP removal within 100 min, with a kinetic rate constant of 0.0262 min −1 , which is 5–11 times superior to that of the single-component systems. Radical quenching experiments and EPR analysis confirmed the involvement of •OH, SO 4 •⁻, O 2 •⁻, and 1 O 2 , among which O 2 •⁻ was identified as the primary contributor. The catalyst demonstrated remarkable stability, retaining over 80 % efficiency after five consecutive cycles, and maintained high efficacy in both tap and surface water matrices. Effective across a broad pH range (3.96–9.74), the system's performance was, however, inhibited by the presence of HCO 3 - and H 2 PO 4 - anions. The degradation pathway of CIP involved defluorination of the quinolone ring, oxidation of the piperazine ring, and C-F bond cleavage, ultimately leading to the formation of low-molecular-weight products. This work presents a stable and synergistic strategy that couples photocatalysis with PMS activation for antibiotic remediation, thereby advancing practical solutions for water treatment.
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高影响因子
CERAMICS INTERNATIONAL
·
2014
·Vol. 40
·期 9
·15199-15206
·
IF 2.086
Yanbo Yang,Xiao Peng,Si Chen,Liping Lin,Bao Zhang,Yaqing Feng
The novel hierarchical compact layer involving ZnO and TiO 2 blocking films is used to improve the overall performance of dye-sensitized solar cells. The ZnO compact films are fabricated as a bottom layer to block the electrons injection to the conductive glass and improve the open-circuit voltage. The TiO 2 compact layer is employed to suppress back electron transfer and avoid ZnO contacting the acid dyes directly. The short-circuit current density of the DSSC containing the hierarchical compact layer is improved by 30% compared to that of one with only ZnO as the compact layer. The open-circuit voltage is increased by 4% after introducing the additional TiO 2 blocking layer between the ZnO compact layer and mesoporous TiO 2 layer. Overall, the short-circuit current density, open-circuit voltage and solar energy conversion efficiency are enhanced by 15.3%, 3.7% and 29.6%, respectively, relative to the traditional DSSC without any blocking layers. The ZnO–TiO 2 blocking layer has been characterized by electrochemical impedance spectroscopy , open-circuit voltage decay and dark current measurement to reveal the mechanism of short-circuit current density and open-circuit voltage improvement.
研究领域:
材料科学
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纳米科技
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能源化学
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光伏技术
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表面科学
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危险品化学品经营许可证（带存储）