4.7 Article

Preparation of a composite photocatalyst with enhanced photocatalytic activity: Smaller TiO2 carried on SiO2 microsphere

Journal

APPLIED SURFACE SCIENCE
Volume 493, Issue -, Pages 146-156

Publisher

ELSEVIER
DOI: 10.1016/j.apsusc.2019.07.005

Keywords

SiO2 microsphere; TiO2; Photocatalysis; Surface hydroxyl

Funding

  1. National Natural Science Foundation of China [51474194]
  2. Fundamental Research Funds for the Central Universities of China [292018302]

Ask authors/readers for more resources

In order to improve the photocatalytic activity of nano-TiO2 and achieve its recovery, TiO2/MS-SiO2 photocatalyst is prepared when TiO2 nanoparticles are distributed on the surface of amorphous SiO2 microspheres (MS-SiO2) through sol-gel method, and its composition and morphology structure are characterized using X-ray diffraction (XRD), scanning electron microscopy (SEM), energy dispersive spectrometer (EDS) and transmission electron microscopy (TEM). Besides, the photocatalytic properties are tested and evaluated by degradation efficiency of methyl orange under ultraviolet light. The results show that TiO2 nanoparticles uniformly dispersed on the surface of MS-SiO2 and combined with MS-SiO2 strongly by Ti-O-Si bond, whereas TiO2 is anatase crystal and grain size is about 5 nm. Under ultraviolet light for 90 min, the degradation rate of TiO2/MS-SiO2 for methyl orange reached 100%, which is better than pure TiO2 and P25. In addition, photocatalytic performance remains unchanged in a cyclic experiment. Transmission and separation efficiency of nano-TiO2 photo-generated charge carriers is improved by loading on the surface of MS-SiO2 so that MS-SiO2 can enhance the photocatalytic performance of pure TiO2. Moreover, this fact is illustrated by electron paramagnetic resonance intuitively.

Authors

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

Reviews

Primary Rating

4.7
Not enough ratings

Secondary Ratings

Novelty
-
Significance
-
Scientific rigor
-
Rate this paper

Recommended

Article Chemistry, Physical

CHARACTERIZATION OF BRUCITE/TiO2 COMPOSITE PARTICLE MATERIAL PREPARED BY MECHANO-CHEMICAL METHOD

Yu Liang, Hao Ding, Qiang Xue

SURFACE REVIEW AND LETTERS (2018)

Article Chemistry, Physical

The Preparation of TiO2 Film by the Sol-Gel Method and Evaluation of Its Self-Cleaning Property

Yu Liang, Sijia Sun, Tongrong Deng, Hao Ding, Wanting Chen, Ying Chen

MATERIALS (2018)

Article Chemistry, Physical

PREPARATION AND CHARACTERIZATION OF TiO2/SERICITE COMPOSITE MATERIAL WITH FAVORABLE PIGMENTS PROPERTIES

Yu Liang, Wanting Chen, Guang Yang, Hao Ding, Xifeng Hou, Jun Ran

SURFACE REVIEW AND LETTERS (2019)

Article Materials Science, Multidisciplinary

Ferromagnetism, structure transitions, and strain coupling of magnetoelastic double perovskite La2CoMnO6

Dexin Yang, Tao Yang, Yulong Chen, Yu Liang, Yan'gai Liu

JOURNAL OF MATERIALS SCIENCE (2019)

Article Chemistry, Physical

PREPARATION AND CHARACTERIZATION OF ORGANIC MODIFIED CALCIUM CARBONATE BY SODIUM STEARATE (OR SODIUM OLEATE) USING WET METHOD

Yu Liang, Sijia Sun, Hao Ding, Xifeng Hou

SURFACE REVIEW AND LETTERS (2020)

Article Materials Science, Ceramics

Rutile-perovskite multi-phase composite by mechano-chemical method together with calcination: Preparation and application in coatings and ceramic glaze

Yu Liang, Wei Liu, Hao Ding, Han Zhang, Wei Li

Summary: In this article, rutile-perovskite multi-phase composite was synthesized by mechano-chemical method and calcination, with optimized parameters and excellent pigment properties demonstrated. The composite shows great potential in applications such as coatings and ceramic glaze, showcasing its extensive industrial usability.

CERAMICS INTERNATIONAL (2021)

Article Chemistry, Physical

CHARACTERIZATION OF TALC/TiO2 COMPOSITE PARTICLE MATERIAL PREPARED BY MECHANO-CHEMICAL METHOD

Yu Liang, Weihua Ao, Hao Ding, Kai Shen

Summary: The study investigated the properties and mechanism of talc/TiO2 composite particles prepared by coating TiO2 on the surfaces of talc particles using a mechano-chemical method. The results showed that TiO2 was evenly coated on the talc particles via Si-O-Ti and Mg-O-Ti bonds through surface dehydroxylation reaction.

SURFACE REVIEW AND LETTERS (2021)

Review Chemistry, Physical

Mineral-TiO2 composites:Preparation and application in papermaking, paints and plastics

Yu Liang, Hao Ding

JOURNAL OF ALLOYS AND COMPOUNDS (2020)

Article Materials Science, Coatings & Films

Preparation of a temperature-sensitive superhydrophobic self-cleaning SiO2-TiO2@PDMS coating with photocatalytic activity

Xuan Wang, Hao Ding, Sijia Sun, Han Zhang, Run Zhou, Yangzi Li, Yu Liang, Jie Wang

Summary: SiO2-TiO2@PDMS ternary compound with certain photocatalytic activity and superhydrophobicity was prepared in this study, showing excellent repellent effects towards different liquid droplets. The coating exhibited good mechanical stability and UV irradiation resistance, making it suitable for practical applications.

SURFACE & COATINGS TECHNOLOGY (2021)

Article Chemistry, Physical

MODIFIED AMORPHOUS SiO2 FROM Zr-CONTAINING SILICA RESIDUE: A PROMISING WAY OF RECYCLING USEFUL MATERIALS AS WELL AS REMOVING Cr(VI) FROM WATER

Yu Liang, Wanting Chen, Han Zhang, Jimo Wang, Hao Ding, Xipeng Yu

Summary: Amorphous SiO2 purified from Zr-containing silica residue and modified by CTAB was used for Cr(VI) adsorption. The optimal pH value for adsorption was found to be 3, with 60 minutes of adsorption time required at 45 degrees Celsius using 10 g/L of modified SiO2. The adsorption isotherm and process were interpreted using Langmuir and pseudo-second-order kinetic models, providing an effective option for waste water treatment and material recycling.

SURFACE REVIEW AND LETTERS (2021)

Article Materials Science, Ceramics

Superhydrophilic wollastonite-nanoTiO2 composite photocatalyst prepared by a wet grinding method: The effects of carriers and their application in the self-cleaning coatings

Run Zhou, Jie Wang, Xuan Wang, Han Zhang, Sijia Sun, Yangzi Li, Hao Ding, Daimei Chen, Wei Li, Jing Zhang, Yu Liang

Summary: The wollastonite-nanoTiO(2) composite, WOT-PC, exhibits promising photocatalytic performance and recycling ability due to the stable chemical binding of Ca-O-Ti and Si-O-Ti, as well as the promotion of electron-hole separation efficiency by Ca-O-Ti. UPS analysis suggests that electron movement to the surface of TiO2 is facilitated after wollastonite supports nanoTiO(2), leading to enhanced photocatalytic performance. The superhydrophilicity and self-cleaning ability of WOT-PC make it a potential candidate for outdoor wall coatings.

CERAMICS INTERNATIONAL (2022)

Article Materials Science, Ceramics

Acid-etched coal fly ash/TiO2 nanocomposites with high photocatalytic degradation efficiency: a high value-added application of coal fly ash

Yu Liang, Song Chen, Jiaxin Zhong, Hao Ding, Zhanli Zhu, Shu Li

Summary: In this study, a novel acid-etched coal fly ash/TiO2 nanocomposite photocatalyst was prepared by HCl etching and sol-gel method. The prepared nanocomposite was characterized and compared with traditional CFA/TiO2 nanocomposites, showing higher photocatalytic degradation efficiency. The results suggest that the preparation and application of CFA/TiO2 nanocomposites have great potential.

JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY (2022)

Article Chemistry, Multidisciplinary

Solid-phase synthesis of perovskite using spent SCR catalyst and calcium carbonate and its application as ceramic opacifier

Han Zhang, Jianmeng Zhang, Hao Ding, Yangzi Li, Sijia Sun, Weihua Ao, Yu Liang

Summary: In this study, synthetic perovskite powder (SPP) was produced and its application as a ceramic opacifier was investigated. The results showed that SPP could be used to obtain white ceramic glaze with excellent opacity. Compared to other opacifiers, the glaze using SPP had stronger opacity and higher whiteness. Additionally, pre-combining TiO2 into perovskite helped to inhibit glaze yellowing.

JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY (2022)

Article Chemistry, Physical

Multifunctional continuous solid solution Na0.9Mg0.45Ti3.55O8-Na2Fe2Ti6O16: Preparation, characterization, magnetism, dual absorption, adsorption, and photocatalysis

Qi-Wen Chen, Ze-Qing Guo, Jian-Ping Zhou

Summary: Multifunctional continuous solid solutions NFMTO-x were successfully synthesized via a one-step hydrothermal method by controlling the ratio of Mg and Fe. The NFMTO-x materials exhibited enhanced visible light response, effective adsorption and photocatalytic degradation of organic pollutants, CO2 methanation capability, and easy recyclability due to their magnetic properties. This research provides a significant multifunctional material for water purification.

APPLIED SURFACE SCIENCE (2024)

Review Chemistry, Physical

Critical advances in the field of magnetron sputtered bioactive glass thin-films: An analytical review

George E. Stan, Maziar Montazerian, Adam Shearer, Bryan W. Stuart, Francesco Baino, John C. Mauro, Jose M. F. Ferreira

Summary: Bioactive glasses have the ability to form strong bonds with tissues and release therapeutic ions. However, their biomechanical compatibility limits their use in load-bearing applications. The use of magnetron sputtering technology to fabricate BG coatings shows promise in improving their efficacy and potential for application.

APPLIED SURFACE SCIENCE (2024)

Article Chemistry, Physical

Corrosion mode evaluation of Fe-based glassy alloys with metalloid elements by electrochemical noise (EN)

Zhaoxuan Wang, Zhicheng Yan, Zhigang Qi, Yu Feng, Qi Chen, Ziqi Song, Meng Huang, Peng Jia, Ki Buem Kim, Weimin Wang

Summary: The corrosion behavior of Fe-60 and Fe-83 ribbons in 0.6 M NaCl was studied. Fe-60 exhibited a local corrosion mode and formed a stable passivation film with higher corrosion resistance, while Fe-83 showed a combination of local and global corrosion modes and had lower corrosion resistance. Controlling the precipitation of nanocrystalline phases and increasing the POx content in the passivation film significantly improved the corrosion resistance of Fe-based glassy alloys.

APPLIED SURFACE SCIENCE (2024)

Article Chemistry, Physical

Impacts of Zr content of HfZrOx-Based FeFET memory on resilience towards proton radiation

Hao-Kai Peng, Sheng-Yen Zheng, Wei-Ning Kao, Ting-Chieh Lai, Kai-Sheun Lee, Yung- Hsien Wu

Summary: This study investigates the effects of high energy/fluence proton radiation on the performance of HfZrOx-based FeFETs memory with different Zr content. The results show that the characteristics of FeFETs are influenced by proton radiation, and the extent of the influence depends on the Zr content. FeFETs with 50% Zr content exhibit minimal changes in memory window and demonstrate good endurance and retention performance.

APPLIED SURFACE SCIENCE (2024)

Article Chemistry, Physical

Excellent crystalline silicon surface passivation by transparent conductive Al-doped ZnO/ITO stack

Zongyi Yue, Guangyi Wang, Zengguang Huang, Sihua Zhong

Summary: In this study, AZO and ITO films were successfully tuned as excellent passivation layers for c-Si surfaces, achieving effective minority carrier lifetime and outstanding optical properties through the optimization of annealing temperature and interfacial silicon oxide.

APPLIED SURFACE SCIENCE (2024)

Article Chemistry, Physical

Hydrogen sensing capabilities of highly nanoporous black gold films

Martin Hruska, Jan Kejzlar, Jaroslav Otta, Premysl Fitl, Michal Novotny, Jakub Cizek, Oksana Melikhova, Matej Micusik, Peter Machata, Martin Vrnata

Summary: This paper presents a detailed study on the hydrogen sensing capabilities of highly nanoporous black gold films. The films exhibit fast response and recovery times at low temperatures. Different levels of nanoporosity were prepared and tested to investigate the sensing properties, and it was found that nanoporous black gold is suitable for hydrogen sensing. The sensitivity of the film depends on its nanoporosity.

APPLIED SURFACE SCIENCE (2024)

Article Chemistry, Physical

Abnormal stability of hydrogenic defects and magnetism near the HSrCoO2.5(001) surface

Yupu Wang, Gaofeng Teng, Chun To Yiu, Junyi Zhu

Summary: In the study of BM-SCO and HSCO thin films, it was found that H vacancies tend to prefer sites near the external surface or oxygen vacancy channels (OVCs), while H interstitials prefer sites of oxygen on a layer that contains six-fold coordinated Co. These findings not only enrich the understanding of complex surface phenomena of defect formation but also provide an explanation for the reversibility during phase transformation.

APPLIED SURFACE SCIENCE (2024)

Article Chemistry, Physical

Space variant fiber nanogratings induced by femtosecond laser direct writing

Jiafeng Lu, Linping Teng, Qinxiao Zhai, Chunhua Wang, Matthieu Lancry, Ye Dai, Xianglong Zeng

Summary: In this study, we achieved full control of fiber nanograting orientation by manipulating laser polarization, and tailored space variant fiber nanogratings, which expanded the diversity in fiber nanograting engineering.

APPLIED SURFACE SCIENCE (2024)

Article Chemistry, Physical

Wetting mechanisms in the mass transfer process of CuSi3 droplets on the TC4 and 304SS multi-metal system controlled by the hybrid shielding gas atmosphere

Yibo Liu, Yujie Tao, Yue Liu, Qi Sun, Qinrong Lin, Kexin Kang, Qinghua Zhang, Qingjie Sun

Summary: This study investigates the wettability of the Ti-Cu-Fe multi-metal system, specifically the wetting behaviors of CuSi3 droplets on TC4 and 304SS plates. The results show that the CO2 + Ar gas atmosphere significantly affects interfacial mass transfer, thus influencing the wettability of the systems.

APPLIED SURFACE SCIENCE (2024)

Article Chemistry, Physical

Size-regulated Co-doped hetero-interfaced 3D honeycomb MXene as high performance electromagnetic absorber with anti-corrosion performance

Jimei Liu, Fei Wang, Rong Guo, Yuqi Liu, Mengyu Zhang, Jaka Sunarso, Dong Liu

Summary: This study developed Co/MXene composites with anti-corrosion properties by varying the cobalt content. These composites exhibited remarkable electromagnetic absorption performance and high resistance to corrosion under various corrosive conditions. The study also revealed the mechanism of electron transfer from cobalt to MXene and the electromagnetic dissipation behavior originated from polarization loss alone.

APPLIED SURFACE SCIENCE (2024)

Article Chemistry, Physical

Ultrafine Ru nanoparticles on nitrogen-doped CNT arrays for HER: A CVD-based protocol achieving microstructure design and strong catalyst-support interaction

Moujie Huang, Yongsong Ma, Jingbo Yang, Lingyun Xu, Hangqi Yang, Miao Wang, Xin Ma, Xin Xia, Junhao Yang, Deli Wang, Chuang Peng

Summary: Strong metal-support interactions (SMSIs) are important for enhancing catalytic activities and stability in thermal catalysis. This study demonstrates a method to create SMSIs in electrocatalysis using carbon nanotubes and Ru nanoparticles, resulting in excellent catalytic activity and stability.

APPLIED SURFACE SCIENCE (2024)

Article Chemistry, Physical

Novel biphenylene as cisplatin anticancer drug delivery carrier; insight from theoretical perspective

Ravi Trivedi, Brinti Mondal, Nandini Garg, Brahmananda Chakraborty

Summary: This study explores the potential of biphenylene as a nanocarrier for the delivery of the anticancer drug cisplatin. It is found that biphenylene offers physical stability, rapid release rate, solubility, and bio-compatibilities compared to other nanocarriers. The adsorption of cisplatin on the surface of biphenylene involves charge transfer from cisplatin to biphenylene. The drug is shown to be released at body temperature in an acidic environment. Biphenylene also exhibits excellent cytotoxicity activity and cellular uptake of the drug. Overall, biphenylene shows promise as a potential nanocarrier for cisplatin delivery.

APPLIED SURFACE SCIENCE (2024)

Article Chemistry, Physical

Platform for surface-enhanced Raman scattering in layered quantum materials

Hyun Jeong, Hyeong Chan Suh, Ga Hyun Cho, Rafael Salas-Montiel, Hayoung Ko, Ki Kang Kim, Mun Seok Jeong

Summary: In this study, a potential platform to enhance Raman scattering and increase the number of observable Raman modes in monolayer transition metal dichalcogenides (TMDs) was proposed. The platform consisted of large-scale arrays of gold micropillars (MPs), which were able to enhance the Raman intensity of TMDs and make difficult-to-detect Raman modes observable. The platform showed great industrial advantages and wide applicability due to its low cost, simple process, large controllable area, and short process time.

APPLIED SURFACE SCIENCE (2024)

Article Chemistry, Physical

Cyclotriphosphazene (P3N3) derived FeOx@SPNO-C core-shell nanospheres as peroxymonosulfate activator for degradation via non-radical pathway

Yasir Abbas, Shafqat Ali, Sajjad Ali, Waqar Azeem, Zareen Zuhra, Haoliang Wang, Mohamed Bououdina, Zhenzhong Sun

Summary: In this study, FeOx@SPNO-C core-shell nanospheres as a catalyst for degradation of sulfamethoxazole (SMX) were successfully synthesized. The synergistic interaction between FeOx and SPNO-C, high carbon charge density, and the presence of C = O groups and N/Fe-Nx sites were found to be key factors for the enhanced degradation of SMX.

APPLIED SURFACE SCIENCE (2024)

Article Chemistry, Physical

Hierarchical confinement of Prussian blue nanoparticles via NH2-MIL-88B (Fe): Rational design and electrocatalytic application

Qiaoting Yang, Yuxiao Gong, Yan Qian, Zhou-Qing Xiao, Serge Cosnier, Xue-Ji Zhang, Robert S. Marks, Dan Shan

Summary: This study proposes a hierarchical confinement strategy to design Prussian blue nanoparticles (PB NPs) with satisfactory electrocatalytic ability and stability. The catalytic synthesis of PB NPs is achieved through a hydrothermal process, and the as-prepared PB@NH2MIL exhibits efficient electronic transmission and enhanced electrocatalytic properties.

APPLIED SURFACE SCIENCE (2024)