INORGANIC CHEMISTRY COMMUNICATIONS
·
2026
·
IF 5.4
Qinzheng Wei,Sze-Mun Lam,Jin-Chung Sin,Huanming Liu,Jinpeng Su,Kun Dong,Haixiang Li
Multifunctional catalyst surfaces for organic photodegradation and antibacterial applications are generally in high requirements, but they are facing towering challenges in light harnessing capability and charge transfer. In this work, a plate-like Bi 2 MoO 6 loaded onto prism-like ZnO (BZ) composite was devised via a two-step precipitation-solvothermal technique to surmount above lapses. Comprehensive material characterization using XRD, FESEM, TEM, XPS, FTIR, UV–vis DRS, PL and photoelectrochemical measurements witnessed successful material compounding and crucial structural as well as distinct electrochemical traits. When fed with enrofloxacin (ENR) as a targeted aquaculture pollutant, the BZ composite exhibited high photodegradation activity (98.2%) under solar light, which was 1.4 and 2.6 times those of individual Bi 2 MoO 6 and ZnO after 180 min solar irradiation, respectively. Moreover, the BZ composite efficiently realized photocatalytic inactivation of Escherichia coli and Staphylococcus aureus under solar light irradiation. The bacterial colony completely inactivated after introducing the binary composite within 180 min. The remarkable enhancement was due to both incorporation of abundant site Bi 2 MoO 6 and the formation of BZ Z -scheme system which better improved light capturing behaviour and afforded the effective charge segregation for the incremented reactive oxygen species yield (e.g. superoxide anion radical and photogenerated hole). Additionally, LC-MS and T.E.S.T outcomes further validated the efficient ENR photodegradation and a substantial reduction in the toxicity of intermediate products. The relatively convenient repeatability trait and eminent photoactivity performance of BZ were favorable for actual wastewater treatment and bacterial disinfection applications.
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Catalysis Science & Technology
·
2026
·
IF 4.2
Yujie Guo,Chengjie Li,Wenhui Zhang,Ruifang Liu,Xueli Du,Zhen Liu,Ying Zhang,Zi-Feng Yan
Atmospheric CO 2 concentrations are increasing rapidly, posing severe environmental challenges. Hydrogenation of CO 2 to methanol represents a promising strategy to reduce the content of CO 2 . While Cu-based catalysts have garnered significant attention, there are still problems such as low selectivity for methanol and poor stability. In this study, a highly dispersed Cu/ZnO-ZrO 2 catalyst was synthesized via a formamide-assisted co-precipitation method. Investigation of the ZrO 2 loading revealed that the Cu/ZnO-25%ZrO 2 catalyst exhibited optimal performance for CO 2 hydrogenation to methanol, achieving a CO 2 conversion of 6.7%, methanol selectivity of 85%, and a methanol space-time yield (STY) of 586.5 g MeOH •kg cat -1 •h -1 . The results demonstrate a strong interaction between Cu and the ZnO-25%ZrO 2 support surface, which predominantly stabilizes Cu in the Cu + state. Notably, these Cu + species remain stable even after reduction and reaction. This interaction not only ensures high catalytic activity but also confers excellent stability to the catalyst, as evidenced by the absence of deactivation over a 200-hour stability test.
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APPLIED SURFACE SCIENCE
·
2026
·
IF 6.9
Luan Fu,Lulu Du,Zheng Lu,Weizhong Tan,Xiaohui Shi,Li Lv,Pinhua Zhang,Guangliang Cui
The fabrication of micro/nano metal oxide semiconductor (MOS) heterostructures, employing bimetallic metal–organic frameworks (Bi-MOFs) as self-sacrificing templates, can significantly enhance the sensitivity of the resulting nanocomposite materials. Herein, ZnO/NiO heterostructures derived from Ni/Zn Bi-MOFs were fabricated, which achieved outstanding UV-assisted NO 2 -sensing performance at room temperature. Our experiments reveal a sensitive dependence of the sensing performance of ZnO/NiO heterostructures sensor on calcination temperature. The ZnO/NiO-600 sensor, which was calcined at 600 °C, demonstrated the best sensing performance, achieving 3-fold sensitivity enhancement over pure ZnO. Under UV irradiation, the response value to 1 ppm NO 2 reaches 6.78, with corresponding response and recovery times of 15 s and 40 s, respectively. Furthermore, the ZnO/NiO-600 sensor exhibits an exceptional detection limit as low as 20 ppb and a strong linear response within the range of 20 ppb–1 ppm (R 2 = 0.994). The excellent sensing performance can be attributed to the synergistic effect of several factors, including the mesoporous structure of MOF-derived MOS materials, the formation of ZnO/NiO heterostructures, and UV irradiation. This work provides a promising strategy for the development of a novel Bi-MOF-derived MOS heterosturcture that can be applied to photoelectric gas sensor.
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OPTICS LETTERS
·
2018
·Vol. 43
·期 10
·2244-2247
·
IF 3.589
Ruibin Lin,Liang Hu,Jinzhang Wang,Wenjing Zhang,Shuangchen Ruan,Yu-Jia Zeng
© 2018 Optical Society of
America
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MICROCHIMICA ACTA
·
2026
·Vol. 193
·期 9
·596
·
IF 5.4
Wang Wenzhuo,Lu Juan,Jiang Hanyue,Han Pengfei,Ma Guangping,Li Ruixin,Mao Huiyuan,Ma Tengying,Wang Jing,Chen Ruizhan,Tian Li
A dual-mode sensing platform has been developed for ultrasensitive malathion (MAT) detection based on bifunctional rGO@ZnO/Zn-Fe 3 O 4 composites (reduced graphene oxide-supported ZnO nanorods and Zn-doped Fe 3 O 4 microspheres). The rGO@ZnO/Zn-Fe 3 O 4 nanozyme is fabricated via a one-pot hydrothermal strategy and integrates favorable electrochemiluminescence (ECL) emission and intrinsic peroxidase-mimicking activity to realize dual-signal readout. In the K 2 S 2 O 8 ECL system, Au NPs@UiO-66 serves as a coreactant booster to further magnify the ECL intensity of the composite. Meanwhile, the nanozyme catalyzes the H 2 O 2 -mediated oxidation of 3,3',5,5'-tetramethylbenzidine (TMB) to produce a colorimetric response. MAT suppresses both ECL and colorimetric responses by occupying Fe 2+ /Fe 3+ catalytic sites and scavenging of reactive radicals. The sensor achieves limits of detection as low as 2.8 × 10 –13 mol/L under ECL mode and 1.32 × 10 –6 mol/L under colorimetric mode. In practical testing of MAT-spiked vegetable samples, the sensor exhibits acceptable recoveries and low relative standard deviations, demonstrating its practicability for field food safety supervision and rapid pesticide residue screening. Graphical abstract
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JOURNAL OF NANOPARTICLE RESEARCH
·
2026
·Vol. 28
·期 8
·219
·
IF 3.5
Hu Xingao,Wang Yuxiang,Wang Song,Tan Liqiang
The growing application of engineered nanoparticles has heightened concerns regarding their environmental release; gaining a robust understanding of their transport mechanisms, environmental fate, and behavioral dynamics in natural aquatic systems is therefore of particular importance. This study systematically investigated the aggregation and disaggregation behavior of ZnO nanoparticles in the presence of humic acid (HA) and/or Ca 2+ ions across a range of pH values. Additionally, controlled shear conditions were applied to assess the influence of hydrodynamic shear forces on ZnO nanoparticle stability. The addition of HA to the suspensions resulted in a significant decrease in zeta potential and an increase in the hydrodynamic diameter of ZnO nanoparticles, implying the occurrence of charge neutralization between nanoparticles. High shear forces were sufficient to overcome interparticle attractive forces, thereby disaggregating large particle clusters into smaller entities; in contrast, low shear forces promoted nanoparticle aggregation by enhancing collision frequency and efficiency. Higher strength factors (SF) values observed in reaction systems with elevated Ca 2+ ion concentrations indicated that aggregates formed under such conditions exhibited more compact structures and greater resistance to shear-induced fragmentation. Fluorescence spectra analysis indicated that the compact structure of ZnO nanoparticles formed under high Ca 2+ ion concentrations was most likely due to the strong chemical binding with HA and bridging mechanisms involving divalent cations formed during the aggregation process. The findings of this study provide a mechanistic basis for predicting the environmental fate and transport behavior of ZnO nanoparticles in natural aquatic environments.
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INORGANIC CHEMISTRY
·
2026
·Vol. 65
·期 29
·16879-16886
·
IF 4.6
Wu Jing,Wang Ruonan,Lin Haifeng,Xing Jun,Wang Lei,Xu Jixiang
In this work, a novel ternary heterojunction consisting
of Zn vacancy-rich
zinc oxide (Zn 1– x O), a zeolitic
imidazolate framework-8 (ZIF-8), and cobalt phthalocyanine (CoPc)
was fabricated for photocatalytic N 2 fixation. The Zn 1– x O/ZIF-8 composite with bridged O–Zn–N
bonding was synthesized via in situ growth of ZIF-8 on Zn 1– x O, and it possessed a large surface area favorable
for N 2 adsorption. The incorporation of CoPc with dispersed
Co–N 4 (II) sites enhanced light harvesting and N 2 activation. Zn vacancies and coupled type II/Z-scheme charge
transfer pathways in the heterojunction accelerated the separation
of photogenerated charge carriers. As a result, the optimized catalyst
exhibited superior and stable photocatalytic N 2 reduction
performance via an alternating pathway in water, with an NH 4 + production rate of 65.2 μmol g –1 h –1 , which is 17.0 times higher than that of ZnO.
This study develops a novel ZnO-based heterojunction that simultaneously
optimizes multiple key factors for efficient photocatalytic N 2 fixation.
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高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2026
·
IF 12.5
Yu-Hang Gu,Kang Wu,Wei Mao,Jie-Xin Wang
Rotating packed bed (RPB) is firstly used for chemical synthesis of heterojunction. • ZnO/ZIF-8 heterojunctions achieve a record catalytic activity in PLA methanolysis. • RPB product has more oxygen vacancies and stronger Lewis acid than counterpart. • Lewis acid of ZnO and high surface area of ZIF-8 endow catalyst high activity. • Excellent activity covers various real-life polyester wastes and their mixtures. The chemical recycling of plastic is crucial for achieving a circular economy, and developing heterogeneous catalysts that combine high activity with structural stability represents a pivotal challenge. Herein, a high-gravity-assisted approach was proposed to efficiently construct ZnO/ZIF-8 (RPB-ZnO/ZIF-8) nanoheterojunctions enriched with oxygen vacancies (Ov) for polylactic acid (PLA) methanolysis to methyl lactate (MeLA). Compared to the stirred tank (ST), high-gravity synthesis drastically reduces coordination reaction time from 1 h to an extremely short time (< 1 s). The as-prepared RPB-ZnO/ZIF-8 catalyst achieved 100% PLA conversion at 100 °C in 0.5 h with a MeLA yield of 95.6%, reaching the highest activity compared to previous works so far. More importantly, it demonstrated excellent cycle stability, maintaining >92% of its initial activity after five cycles. Catalytic mechanistic investigations reveal that the Ov increases Lewis acidity of the heterojunction surface, thereby facilitating the reactants adsorption and activation, which leads to a reduction in the energy barrier for PLA methanolysis. Furthermore, RPB-ZnO/ZIF-8 catalyzes the depolymerization of other plastics effectively (e.g., polyethylene terephthalate and polycarbonate) and demonstrates remarkable versatility in converting various real-life polyester wastes and their mixtures. This study presents an efficient strategy for advancements in sustainable plastic recycling.
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Nanomaterials
·
2026
·Vol. 16
·期 13
·829
·
IF 4.8
Huibo Han,Shuai Wang,Rui Min,Ragini Singh,Bingyuan Zhang,Santosh Kumar
2,4-Dichlorophenoxyacetic acid (2,4-D) is an extensively applied organic compound, primarily for agricultural weed control and plant growth agents. Although 2,4-D usually exists in the environment in low volumes, the detection of 2,4-D is critical for human health and environmental safety. In this work, a biophotonic biosensor was fabricated by coating the surface of a tapered optical fiber with gold nanoparticles (AuNPs) to excite the localized surface plasmon resonance (LSPR) and functionalizing the fiber with molybdenum disulfide nanosheets (MoS2-NSs)/zinc oxide nanowires (ZnO-NWs) to extend the effective sensing area. Due to the inhibitory effect of 2,4-D on the hydrolytic activity of ALP, the refractive index (RI) around the sensor surface changes, leading to a shift in the LSPR peak wavelength. According to this sensing technique, the sensor can detect concentrations in the range of 1–10 mg/L, with a limit of detection (LOD) of 0.29 mg/L. The stability, repeatability and selectivity tests show that the sensor has good stability and selectivity. In the actual sample detection experiment, the recovery rates of apples and Chinese cabbage were 96.2–100.4% and 83.8–108.8%, respectively, which indicated that the detection method had good accuracy for the detection of target substances in actual samples. Thus, the proposed sensor has an important application in the detection of 2,4-D herbicides.
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SEPARATION AND PURIFICATION TECHNOLOGY
·
2026
·
IF 9.1
Zechen Yan,Xiaofang Li,Xiaomeng Zhang,Daqian Zhuang,Qingzhong Xue,Lei Zhu
A CA-based nanofiber membrane with ZnO/SnO2 heterojunctions (d-CA@ZnO/SnO2) was fabricated by electrospinning and deacetylation process. • Efficient O/W emulsion separation performance was guaranteed due to the boosted hydrophilicity, and underwater oleophobicity. • ZnO/SnO 2 heterostructures allowed the membrane to achieve an exceptional photocatalytic self-cleaning efficiency. • Discarded membranes were able to biodegrade naturally, providing an eco-friendly wastewater treatment solution. Organic pollutant-induced membrane failure and microplastic accumulation derived from discarded spent membranes pose severe obstacles to the sustainable development of oil/water (O/W) separation membrane technology. In this study, a self-cleaning and biodegradable deacetylated cellulose acetate nanofiber membrane modified with ZnO/SnO 2 heterojunctions (d-CA@ZnO/SnO 2 ) was fabricated by electrospinning and deacetylation process. Simultaneous stripping removal of acetyl groups and polyvinylpyrrolidone fillers effectively enhanced the surface roughness of the membrane, which greatly improved its hydrophilicity and underwater oleophobicity. Benefiting from such favorable surface properties, the d-CA@ZnO/SnO 2 membrane exhibited outstanding separation performance for various O/W emulsions, resulting in the higher permeation flux (∼ 972.25 L·m −2 ·h −1 ) and separation efficiency (∼ 98.2%). Due to the staggered band alignment of ZnO/SnO 2 heterostructures, the charge carrier recombination was prominently suppressed, which allowed the membrane to achieve an exceptional photocatalytic self-cleaning efficiency with a flux recovery rate exceeding 95% via ultraviolet-driven active photodegradation of organic foulants. Meanwhile, enzymatic degradation tests confirmed that the discarded membrane could be disintegrated into fine fragments within cellulase solutions, which presented a practical and eco-friendly approach for oily wastewater purification without causing secondary microplastic pollution. Download: Download high-res image (152KB) Download: Download full-size image
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AICHE JOURNAL
·
2026
·
IF 4.4
Wenxuan He,Zhixue Teng,Zhifeng Ao,Tiefeng Zhao,Zhigang Shen
Overcoming the enthalpy–entropy compensation effect remains a formidable challenge in chemical upcycling of polyesters. Empirical catalyst designs typically maximize Lewis acidity, lowering activation enthalpy (Δ H ‡) for ester activation but triggering an entropic penalty (Δ S ‡) that retards kinetics. Here, we establish a “moderate acidity” principle that balances these competing thermodynamic demands. Eyring analysis shows that optimal 5% manganese (Mn) doping enables a substantial reduction in Δ H ‡ while mitigating the entropic penalty. Mn-doped zinc oxide (ZnO) catalysts prepared via microfluidic synthesis achieve optimal performance at 5% Mn doping, delivering 100% PET conversion, 94.7% BHET yield, and a space–time yield of 250 g monomer g cat −1 h −1 , twice that of pristine ZnO. Life-cycle and techno-economic assessments demonstrate 3.7-fold lower greenhouse gas emissions and 2.4-fold cost reduction relative to conventional routes. Complete atomic utilization is achieved by valorizing glycolysis mother liquor into high-performance waterborne polyurethanes, establishing a zero-waste circular economy for plastics.
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JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
·
2026
·Vol. 37
·期 11
·839
·
IF 3.2
Wang Suting,Meng Xiangbin,Zhang Bowen,Cheng Fei,Xing Kunpeng,Bala Hari
The electron transport layer (ETL) is critical in hole-transport-layer-free all-inorganic perovskite solar cells (PSCs). Although ZnO as an ETL exhibits high electron mobility and suitable energy levels, its high surface defect density often leads to interfacial recombination losses. In this study, PbCl 2 was incorporated into the ZnO ETL to passivate interfacial defects and optimize the energy level alignment. PSCs with a structure of FTO/PbCl 2 –ZnO/CsPbBr 3 /Carbon were fabricated. The resulting carbon-based CsPbBr 3 solar cells achieved a power conversion efficiency (PCE) of 7.0%, representing a 40% improvement over devices based on the pristine ZnO ETL. Furthermore, the unencapsulated devices retained 95% of their initial PCE after 60 days of storage under ambient conditions.
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