4.8 Article

Preparation and photocatalytic performance of transparent titania film from monolayer titania quantum dots

Journal

APPLIED CATALYSIS B-ENVIRONMENTAL
Volume 180, Issue -, Pages 416-423

Publisher

ELSEVIER SCIENCE BV
DOI: 10.1016/j.apcatb.2015.06.049

Keywords

Titania quantum dots; Ultrathin film; Graphene; Photocatalytic performance; Coffee-ring effect

Funding

  1. National Key Basic Research and Development Program [2009CB220000]
  2. National Natural Science Foundation of China [20973110]

Ask authors/readers for more resources

By using monolayer titania quantum dots (MTQDs) colloid, a continuous and transparent ultrathin titania film was prepared simply by drop-cast or spray coating method at room temperature. The formation of this even and ultrathin film was not only because of the very thin thickness of two-dimensional MTQDs, but also because of the suppression of coffee-ring effect. The self-assembly behaviors of MTQDs were examined by AFM and the reason for the suppression of coffee-ring effect was discussed in detail. Furthermore, the photocatalytic performance of this MTQDs film was evaluated and an improvement was achieved by loading graphene. Comparison between MTQDs/graphene composite and sphereshaped nanoTiO(2)/graphene composite indicated that, the face-to-face contact mode between MTQDs and graphene may contribute to the high activity of MTQDs/graphene composite. (C) 2015 Elsevier B.V. All rights reserved.

Authors

I am an author on this paper
Click your name to claim this paper and add it to your profile.

Reviews

Primary Rating

4.8
Not enough ratings

Secondary Ratings

Novelty
-
Significance
-
Scientific rigor
-
Rate this paper

Recommended

Article Chemistry, Applied

Photocatalytic oxidation behaviors of Di-2-ethylhexyl phthalate over Pt/TiO2

Yuting Liang, Zhi Jiang, Wenfeng Shangguan

Summary: This study investigated the photocatalytic reaction behavior of DEHP over surface platinized TiO2, with the oxidation state of platinum found to be crucial in determining the photocatalytic activity. Platinized titania with oxidized Pt species showed higher photocatalytic activity compared to metallic Pt. Photocatalysis coupled with thermal catalysis can enhance the degradation of DEHP, and Pt oxide, particularly PtO, can improve the photocatalytic oxidation efficiency by promoting the separation efficiency of photo generated carriers.

CATALYSIS TODAY (2021)

Article Chemistry, Physical

Effect of oxygen concentration and distribution on holes transfer and photoelectrocatalytic properties in hematite

Mengyang Zhou, Shuai Chen, Jing Bai, Jiachen Wang, Yan Zhang, Tingsheng Zhou, Jinhua Li, Wenfeng Shangguan, Baoxue Zhou

Summary: Oxygen concentration and distribution in hematite significantly affect holes transfer efficiency, ultimately influencing the performance of photoelectrocatalytic water splitting. Thermal treatment leads to changes in oxygen, impacting holes transfer efficiency.

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY (2021)

Article Engineering, Environmental

Catalytic oxidation of dimethyl phthalate over titania-supported noble metal catalysts

Yuting Liang, Jiayi Li, Yaoyu He, Zhi Jiang, Wenfeng Shangguan

Summary: The study found that as the temperature increases, the model SVOC DMP gradually oxidizes on the surface of supported catalysts, with carbon dioxide as the main product, but aromatic products and small molecule products are still observed at different temperatures.

JOURNAL OF HAZARDOUS MATERIALS (2021)

Article Chemistry, Physical

Generation of abundant defects in Mn-Co mixed oxides by a facile agar-gel method for highly efficient catalysis of total toluene oxidation

Peifen Wang, Jing Wang, Xiaowei An, Jin Shi, Wenfeng Shangguan, Xiaogang Hao, Guangwen Xu, Bing Tang, Abuliti Abudula, Guoqing Guan

Summary: The facile agar-gel method was successfully applied to prepare homogenous Mn-Co mixed oxides with different Mn/Co molar ratios for total toluene oxidation catalysis. The obtained Mn2Co1 mixed oxide displayed high catalytic activity, durability, and tolerability in water vapor environment. Characterizations and measurements indicated the optimum Mn-Co mixed oxide had high surface area, various species, strong oxygen adsorption, good reducibility, and excellent O2 adsorption ability, making it suitable for VOCs oxidation design.

APPLIED CATALYSIS B-ENVIRONMENTAL (2021)

Article Engineering, Environmental

Experimental investigation of the effect of collection length in a two-stage electrostatic precipitator for removal of PM2.5

Yong Zhu, Chen Chen, Jianwei Shi, Mingxia Chen, Wenfeng Shangguan

Summary: Experimental results showed that the collection efficiency could reach up to 92.9%, 96.7%, and 97.7% for 0.25 µm, 0.35 µm, and 0.45 µm diameter particles at 4 m/s gas velocity, respectively. Electric field strength had a moderate effect on collection efficiency, with an index factor of about 18 at a collection length of 30 cm. Charger current, gas velocity, collection length, and electric field strength sequentially affected the ozone concentration.

CHEMICAL ENGINEERING JOURNAL (2021)

Article Engineering, Environmental

Highly effective removal of PM2.5 from combustion products: An application of integrated two-stage electrostatic precipitator

Yong Zhu, Shanlong Tao, Chen Chen, Jiahua Liu, Mingxia Chen, Wenfeng Shangguan

Summary: An integrated two-stage electrostatic precipitator was developed and tested to efficiently remove PM2.5, showing excellent collection efficiency at different gas velocities and providing suggestions for secondary entrainment suppression and application strategies.

CHEMICAL ENGINEERING JOURNAL (2021)

Article Chemistry, Physical

Promoted charge separation on 3D interconnected Ti3C2/MoS2/CdS composite for enhanced photocatalytic H2 production

Xiang Liu, Binfen Wang, Qianqian Heng, Wei Chen, Xiying Li, Liqun Mao, Wenfeng Shangguan

Summary: The construction of a ternary 3D interconnected nanocomposite Ti3C2/MoS2/CdS with closely interfacial contact has been successfully achieved. This composite material exhibits excellent photocatalytic H-2 evolution activity by accelerating electron transfer and inhibiting carrier recombination.

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY (2022)

Article Chemistry, Physical

Solid-phase synthesis of Bi3-xYxO4Cl solid solution for visible-light photocatalytic hydrogen generation

Yawei Jiang, Yan Mi, Chufan Li, Wenjian Fang, Xiaochuan Li, Xianghua Zeng, Yongsheng Liu, Wenfeng Shangguan

Summary: In this study, the solid solution Bi3-xYxO4Cl was successfully synthesized with tunable absorption edge and bandgap by adjusting the Bi content and Y/Bi ratio, showing excellent visible-light photocatalytic water splitting performance.

JOURNAL OF ALLOYS AND COMPOUNDS (2021)

Article Chemistry, Physical

Unveiling the role of surface heterostructure in Bi0.5Y0.5VO4 solid solution for photocatalytic overall water splitting

Weiqi Guo, Pengfei Yu, Haolin Luo, Jiasheng Chi, Zhi Jiang, Xiaosong Liu, Wen Wen, Wenfeng Shangguan

Summary: The solid solution photocatalyst is crucial for designing one-step excitation water splitting systems. This study synthesized Bi0.5Y0.5VO4 solid solution and investigated the influence of surface structure variations at different temperatures on the catalytic activity.

JOURNAL OF CATALYSIS (2022)

Article Engineering, Environmental

Benzene decomposition by non-thermal plasma: A detailed mechanism study by synchrotron radiation photoionization mass spectrometry and theoretical calculations

Yuting Liang, Jiayi Li, Yingying Xue, Ting Tan, Zhi Jiang, Yaoyu He, Wenfeng Shangguan, Jiuzhong Yang, Yang Pan

Summary: This study investigated the degradation process of benzene in non-thermal plasma using SVUV-PIMS technology, identifying key products and highlighting the significance of previously overlooked byproducts.

JOURNAL OF HAZARDOUS MATERIALS (2021)

Article Engineering, Chemical

A novel approach for evaluating the effect of external electric field on charged particles based on the Lagrangian particle tracking method

Yong Zhu, Shanlong Tao, Chen Chen, Jiahua Liu, Mingxia Chen, Wenfeng Shangguan

Summary: This paper develops a novel approach for evaluating charged particles' collision probability in the external electric field of a regular two-stage electrostatic precipitator. Numerical simulation is used to analyze the factors influencing particle collision, with results showing that the R-AC external electric field is more beneficial for particle collision. Frequency and plate spacing do not have a significant impact on collision probability, while applied voltage has a promotional effect. The dimensionless coefficient analysis provides valuable information for optimizing working conditions in different types of external electric fields.

POWDER TECHNOLOGY (2021)

Article Chemistry, Physical

Enhanced photocatalytic hydrogen production based on laminated MoS2/g-C3N4 photocatalysts

Hui Yuan, Fenjian Fang, Jing Dong, Weiwei Xia, Xianghua Zeng, Wenfeng Shangguan

Summary: MoS2/g-C3N4 composites exhibit good activity and stability in photocatalytic hydrogen generation, which can be attributed to their typical layered structure and the presence of few-layer MoS2.

COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS (2022)

Review Energy & Fuels

Recent advances of hydrogen production through particulate semiconductor photocatalytic overall water splitting

Zhi Jiang, Zhen Ye, Wenfeng Shangguan

Summary: This paper provides a summary of the cutting-edge research in solar energy-driven photocatalytic water splitting, including the overall water splitting system and photocatalytic reaction engineering. It gives an overview of recent progress and emphasizes the challenges and opportunities in the current system.

FRONTIERS IN ENERGY (2022)

Article Chemistry, Physical

Few-Layered MoS2/ZnCdS/ZnS Heterostructures with an Enhanced Photocatalytic Hydrogen Evolution

Jing Dong, Wenjian Fang, Hui Yuan, Weiwei Xia, Xianghua Zeng, Wenfeng Shangguan

Summary: The preparation of efficient noble-metal-free catalysts through MoS2/ZnCdS/ZnS dual heterostructures has led to high hydrogen production rates and stability in water-splitting reactions.

ACS APPLIED ENERGY MATERIALS (2022)

Article Chemistry, Applied

In-situ pressure-induced BiVO4/Bi0.6Y0.4VO4 S-scheme heterojunction for enhanced photocatalytic overall water splitting activity

Weiqi Guo, Haolin Luo, Zhi Jiang, Wenfeng Shangguan

Summary: This study constructs S-scheme heterojunctions in photocatalysts through pressure-induced phase transition and finds that this structure can significantly enhance the overall water splitting activity. Characterization of carrier dynamics demonstrates that S-type heterojunctions contribute to improved carrier separation.

CHINESE JOURNAL OF CATALYSIS (2022)

Article Chemistry, Physical

Enhancing catalytic activity of zeolitic octahedral metal oxides through zinc incorporation for ethane oxidative dehydrogenation

Bolun Yu, Denan Li, Qianqian Zhu, Shufan Yao, Lifeng Zhang, Yanshuo Li, Zhenxin Zhang

Summary: This study successfully improved the catalytic activity of a zeolitic octahedral metal oxide by incorporating a single zinc species into its micropore. The zinc incorporation achieved a high ethane conversion rate and ethylene selectivity. Mechanism study showed that the isolated zinc site played a crucial role in activating oxygen and ethane, as well as stabilizing intermediates and transition states.

APPLIED CATALYSIS B-ENVIRONMENT AND ENERGY (2024)

Article Chemistry, Physical

Unveiling the synergistic effect between the metallic phase and bridging S species over MoS2 for highly efficient nitrogen fixation

Ruoqi Liu, Hao Fei, Jian Wang, Ting Guo, Fangyang Liu, Zhuangzhi Wu, Dezhi Wang

Summary: This work successfully synthesized a high-performing S-enriched MoS2 catalyst for electrocatalytic nitrogen reduction reaction (NRR), demonstrating high activity and selectivity. The synergistic effect of the 1T phase and bridging S22- species was shown to play a positive role in NRR performances, and DFT calculations revealed the mechanism behind the improved performance.

APPLIED CATALYSIS B-ENVIRONMENT AND ENERGY (2024)

Article Chemistry, Physical

Polymethylhydrosiloxane-modified gas-diffusion cathode for more efficient and durable H2O2 electrosynthesis in the context of water treatment

Pan Xia, Lele Zhao, Xi Chen, Zhihong Ye, Zhihong Zheng, Qiang He, Ignasi Sires

Summary: This study presents a modified gas-diffusion electrode (GDE) for highly efficient and stable H2O2 electrosynthesis by using trace polymethylhydrosiloxane (PMHS). DFT calculations provide an in-depth understanding of the roles of PMHS functional groups.

APPLIED CATALYSIS B-ENVIRONMENT AND ENERGY (2024)

Article Chemistry, Physical

Boron-doped rGO electrocatalyst for high effective generation of hydrogen peroxide: Mechanism and effect of oxygen-enriched air

Kwangchol Ri, Songsik Pak, Dunyu Sun, Qiang Zhong, Shaogui Yang, Songil Sin, Leliang Wu, Yue Sun, Hui Cao, Chunxiao Han, Chenmin Xu, Yazi Liu, Huan He, Shiyin Li, Cheng Sun

Summary: Different B-doped rGO catalysts were synthesized and their 2e- oxygen reduction reaction (ORR) performance was investigated. It was found that the 2e- ORR selectivity of B-doped rGO was influenced by the B content and oxygen mass transfer conditions. The synthesized catalyst exhibited high 2e- ORR selectivity and was capable of degrading organic pollutants continuously.

APPLIED CATALYSIS B-ENVIRONMENT AND ENERGY (2024)

Article Chemistry, Physical

Oxygen vacancies-modified S-scheme heterojunction of Bi-doped La2Ti2O7 and La-doped Bi4Ti3O12 to improve the NO gas removal avoiding NO2 product

Li Lv, Lin Lei, Qi-Wen Chen, Cheng-Li Yin, Huiqing Fan, Jian-Ping Zhou

Summary: Monoclinic phase La2Ti2O7 and orthorhombic phase Bi4Ti3O12 are widely used in photocatalysis due to their layered crystal structure. The electronic structures of these phases play a crucial role in their photocatalytic activity. Heat treatment in a nitrogen atmosphere introduces more oxygen vacancies into the S-scheme heterojunction, leading to enhanced NO removal efficiency.

APPLIED CATALYSIS B-ENVIRONMENT AND ENERGY (2024)

Article Chemistry, Physical

Understanding the synergistic effect of hydrated electron generation from argon plasma catalysis over Bi2O3/CeO2 for perfluorooctanoic acid dehalogenation: Mechanism and DFT study

Choe Earn Choong, Minhee Kim, Jun Sup Lim, Young June Hong, Geon Joon Lee, Keun Hwa Chae, In Wook Nah, Yeomin Yoon, Eun Ha Choi, Min Jang

Summary: In this study, the synergistic effect between argon-plasma-system (AP) and catalysts in promoting the production of reactive species for water remediation was investigated. By altering the oxygen vacancies concentration of CeO2/Bi2O3 catalyst, the production of hydrated electrons was stimulated for PFOA removal. The results showed that the built-in electric field in the Bi/Ce0.43 interface enhanced electron migration and eaq- generation, leading to improved PFOA removal efficiency.

APPLIED CATALYSIS B-ENVIRONMENT AND ENERGY (2024)

Article Chemistry, Physical

Ru clusters anchored on N-doped porous carbon-alumina matrix as efficient catalyst toward primary amines via reductive amination

Yushan Wu, Di Xu, Yanfei Xu, Xin Tian, Mingyue Ding

Summary: Efficient synthesis of primary amines from carbonyl compounds was achieved via reductive amination using Ru@NC-Al2O3 as a catalyst, exhibiting high activity and selectivity under mild conditions.

APPLIED CATALYSIS B-ENVIRONMENT AND ENERGY (2024)

Article Chemistry, Physical

Efficient 1O2 production from H2O2 over lattice distortion controlled spinel ferrites

Yilan Jiang, Peifang Wang, Tingyue Chen, Keyi Gao, Yiran Xiong, Yin Lu, Dionysios D. Dionysiou, Dawei Wang

Summary: By controlling the content of Co and Ni in Co1-xNixFe2O4, the production of O-1(2) from H2O2 can be regulated. NiFe2O4, with the lowest lattice distortion degree, can efficiently produce O-1(2) as the dominant reactive oxygen species. The system also exhibits significant resistance to water matrix interference.

APPLIED CATALYSIS B-ENVIRONMENT AND ENERGY (2024)

Article Chemistry, Physical

Tailoring the Mo-N/Mo-O configuration in MoO2/Mo2N heterostructure for ampere-level current density hydrogen production

Shuai Feng, Donglian Li, Hao Dong, Song Xie, Yaping Miao, Xuming Zhang, Biao Gao, Paul K. Chu, Xiang Peng

Summary: In this study, MoO2/Mo2N heterostructures were prepared by regulating the coordination of Mo atoms. The electrocatalyst exhibits high current density and excellent stability for hydrogen evolution reaction.

APPLIED CATALYSIS B-ENVIRONMENT AND ENERGY (2024)

Article Chemistry, Physical

Spin state-tailored tetrahedral and octahedral cobalt centers on millimetric Co-Al oxide catalysts as dual sites for synergistic peroxymonosulfate activation

Jia-Cheng E. Yang, Min -Ping Zhu, Daqin Guan, Baoling Yuan, Darren Delai Sun, Chenghua Sun, Ming-Lai Fu

Summary: This study successfully modulated the electron configuration and spin state of millimetric metal catalysts by adjusting the support curvature radius. The electronic structure-oriented spin catalysis was found to affect the degradation of pollutants, providing new insights for the design and production of highly active, reusable, and stable catalysts.

APPLIED CATALYSIS B-ENVIRONMENT AND ENERGY (2024)

Article Chemistry, Physical

Cu nanocrystals coupled with poly (heptazine imide) for synergistically enhanced photocatalytic CH3SH elimination: Facet engineering strengthened electron pump effect

Tao Zhong, Su Tang, Wenbin Huang, Wei Liu, Huinan Zhao, Lingling Hu, Shuanghong Tian, Chun He

Summary: In this study, a highly efficient photocatalyst for the elimination of CH3SH was developed by engineering different crystal facets and coupling them with PHI. Cu (111)/PHI exhibited the highest elimination efficiency and showed good stability and reusability. The enhanced surface electron pump effect and effective adsorption mechanisms were revealed through comprehensive characterizations and DFT calculations.

APPLIED CATALYSIS B-ENVIRONMENT AND ENERGY (2024)

Article Chemistry, Physical

NiSn intermetallic nanoparticles with geometrically isolated Ni sites for selective C-O cleavage of furfural

Feifei Yang, Tianyu Zhang, Jiankang Zhao, Wei Zhou, Nicole J. Libretto, Jeffrey T. Miller

Summary: A Ni3Sn intermetallic nano particle was found to have geometrically isolated Ni sites that could selectively cleave C-O bonds in biomass derivatives. This nano particle showed high activity and selectivity towards 2-methylfuran, unlike Ni nanoparticles that produced other unwanted products derived from the aromatic rings.

APPLIED CATALYSIS B-ENVIRONMENTAL (2024)

Article Chemistry, Physical

Nickel-facilitated in-situ surface reconstruction on spinel Co3O4 for enhanced electrochemical nitrate reduction to ammonia

Lulu Qiao, Di Liu, Anquan Zhu, Jinxian Feng, Pengfei Zhou, Chunfa Liu, Kar Wei Ng, Hui Pan

Summary: This study reveals that surface evolution plays a crucial role in enhancing the electrocatalytic performance of transition metal oxides for electrochemical nitrate reduction reaction (e-NO3RR). Incorporating nickel into Co3O4 can promote surface reconstruction and improve the adsorption of intermediates and reduce energy barriers, leading to enhanced catalytic performance. The reconstructed cobalt-nickel hydroxides (CoyNi1_y(OH)2) on the catalyst's surface serve as the active phase.

APPLIED CATALYSIS B-ENVIRONMENTAL (2024)

Article Chemistry, Physical

Unraveling the discriminative mechanisms for peroxy activation via atomically dispersed Fe-N5 sites for tunable water decontamination

Xinyu Song, Yang Shi, Zelin Wu, Bingkun Huang, Xinhao Wang, Heng Zhang, Peng Zhou, Wen Liu, Zhicheng Pan, Zhaokun Xiong, Bo Lai

Summary: This study explores the discriminative activities and mechanisms for activation of O-O bond in peroxy compounds via single-atom catalysts (SACs) with higher coordination numbers (M-N5). The atomic catalyst (Fe-SAC) with Fe-N5 as the active center was constructed, effectively activating peroxymonosulfate (PMS), peroxydisulfate (PDS), and hydrogen peroxide (H2O2). The study demonstrates the degradation efficiencies of acyclovir are related to the O-O bond length in different peroxy compounds, and reveals the discriminative mechanisms for activation of O-O bond in different Fenton-like systems.

APPLIED CATALYSIS B-ENVIRONMENTAL (2024)

Article Chemistry, Physical

Fe-Mn oxycarbide anchored on N-doped carbon for enhanced Fenton-like catalysis: Importance of high-valent metal-oxo species and singlet oxygen

Yangzhuo He, Hong Qin, Ziwei Wang, Han Wang, Yuan Zhu, Chengyun Zhou, Ying Zeng, Yicheng Li, Piao Xu, Guangming Zeng

Summary: A dual-metal-organic framework (MOF) assisted strategy was proposed to construct a magnetic Fe-Mn oxycarbide anchored on N-doped carbon for peroxymonosulfate (PMS) activation. The FeMn@NC-800 catalyst exhibited superior activity with almost 100% degradation of sulfamethazine (SMZ) in 30 minutes. The study provided insights for the rational design of high-performance heterogeneous catalysts and proposed a novel nonradical-based catalytic oxidation for environmental cleaning.

APPLIED CATALYSIS B-ENVIRONMENTAL (2024)