ORCID Profile
0000-0001-9981-7499
Current Organisations
University of Technology Sydney
,
RMIT University
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Publisher: Elsevier BV
Date: 09-2020
Publisher: MDPI AG
Date: 06-07-2023
Abstract: Cr(VI) is a common heavy metal pollutants present in the aquatic environment, which possess toxic and carcinogenic properties. In this study, a solvothermal reaction was used to prepare porphyrin (TCPP)-modified UiO-66-NH2 (UNT). The UNT integrated adsorption and photocatalytics in the application for dealing with Cr(VI). The photocatalytic reduction activities of UNT for Cr(VI) were investigated under visible light illumination. We found that the TCPP doping amount of 15 mg UNT (15-UNT) had a 10 times higher reduction rate of Cr(VI) than pristine UiO-66-NH2. The optimal 15-UNT photocatalyst demonstrated the highest photocatalytic activity, and Cr(VI) was completely removed within 80 min. In addition, the introduction of porphyrin not only enhanced the absorption of light but also enabled the transport of photogenerated electrons from porphyrin to UiO-66-NH2, which promoted the separation of charge carriers. Furthermore, the effects of factors such as porphyrin content, pH and light source on the photocatalytic reduction performances of UNT were also explored. Overall, this work presented a possible relationship between the crystal structures and the performance of UNT.
Publisher: Royal Society of Chemistry (RSC)
Date: 2021
DOI: 10.1039/D1CS90081A
Publisher: American Chemical Society (ACS)
Date: 04-06-2020
Publisher: Elsevier BV
Date: 09-2021
Publisher: Elsevier BV
Date: 12-2018
Publisher: Elsevier BV
Date: 05-2022
Publisher: Elsevier BV
Date: 12-2021
DOI: 10.1016/J.WATRES.2021.117810
Abstract: Urine with its abundant macronutrients (N-P-K) is an ideal resource for the production of fertiliser. However, the odor and pathogens in the raw urine must be removed to meet the public acceptance of urine collection systems and to enable its safe reuse as a fertiliser. In this work, real urine was collected and treated through a pilot-scale gravity-driven membrane bioreactor (GDMBR) to remove the malodorous organics and to nitrify almost 50% of the ammonia into nitrate. The stablised urine was subsequently distilled via low-cost heat localized solar evaporation (HLSE) to produce a non-odorous solid fertiliser. The developed HLSE with a small footprint can attract bulk solution into a vertical insulated space and quickly heat it up to 68 °C within 1 h. The HLSE process had vapour flux at 1.3 kg m
Publisher: Elsevier BV
Date: 03-2020
Publisher: Springer Science and Business Media LLC
Date: 06-11-2017
DOI: 10.1038/S41598-017-15134-W
Abstract: In this paper, a highly efficient core-shell structure of TiO 2 (B)/anatase photocatalyst with CoP cocatalyst has been synthesized via hydrothermal processes and a mechanical milling method. The designed core-shell TiO 2 (B)/anatase photocatalysts exhibit excellent performance by compared with pure TiO 2 (B) and anatase phase. With the participation of CoP particles, there is drastically enhanced photocatalytic activity of TiO 2 (B)/anatase, and the H 2 -production rate can be up to 7400 μmol·g −1 , which is about 3.2 times higher than TiO 2 (B)/anatase photocatalyst. The improved activity is attributed to the contribution of the well-matched core-shell structure and cooperative effect of CoP cocatalyst. The photogenerated holes of anatase can migrate more promptly to the adjacent TiO 2 (B) core than the photogenerated electrons, which result in an accumulation of electrons in the anatase, and CoP nanoparticles can contribute significantly to transferring electrons from the surface of TiO 2 (A). It was found that the efficient separation of electron-hole pairs greatly improved the photocatalytic hydrogen evolution in water under UV light irradiation.
Publisher: Elsevier BV
Date: 08-2022
Publisher: Elsevier BV
Date: 02-2020
Publisher: Elsevier BV
Date: 09-2020
Publisher: Elsevier BV
Date: 10-2020
Publisher: Elsevier BV
Date: 02-2017
Publisher: Royal Society of Chemistry (RSC)
Date: 2021
DOI: 10.1039/D1CY00595B
Abstract: Different types of defects in g-C3N4 induce polarization effect to promote the separation of charge carriers and improve the photocatalytic efficiency.
Publisher: Royal Society of Chemistry (RSC)
Date: 2023
DOI: 10.1039/D3NR00727H
Abstract: The graphical abstract illustrates the mechanism of action of cobalt ferrites with oxygen-rich vacancies on PAH contaminants.
Publisher: Elsevier BV
Date: 02-2020
Publisher: Pleiades Publishing Ltd
Date: 20-09-2018
Publisher: Elsevier BV
Date: 2021
Publisher: Elsevier BV
Date: 12-2021
Publisher: Elsevier BV
Date: 12-2020
Publisher: American Chemical Society (ACS)
Date: 19-10-2021
Publisher: Elsevier BV
Date: 06-2021
Publisher: Elsevier BV
Date: 12-2020
Publisher: American Chemical Society (ACS)
Date: 12-03-2019
Publisher: Elsevier BV
Date: 05-2022
Publisher: Elsevier BV
Date: 12-2018
Publisher: Elsevier BV
Date: 10-2018
Publisher: MDPI AG
Date: 10-05-2023
DOI: 10.3390/MA16103631
Abstract: Photocatalytic degradation is an environmentally friendly way to eliminate environmental pollution. Exploring a photocatalyst with high efficiency is essential. In the present study, we fabricated a Bi2MoO6/Bi2SiO5 heterojunction (BMOS) with intimate interfaces via a facile in situ synthesis method. The BMOS had much better photocatalytic performance than pure Bi2MoO6 and Bi2SiO5. The s le of BMOS-3 (3:1 molar ratio of Mo:Si) had the highest removal efficiency by the degradation of Rhodamine B (RhB) up to 75% and tetracycline (TC) up to 62% within 180 min. The increase in photocatalytic activity can be attributed to constructing high-energy electron orbitals in Bi2MoO6 to form a type II heterojunction, which increases the separation efficiencies of photogenerated carriers and transfer between the interface of Bi2MoO6 and Bi2SiO5. Moreover, electron spin resonance analysis and trapping experiments showed that the main active species were h+ and •O2− during photodegradation. BMOS-3 maintained a stable degradation capacity of 65% (RhB) and 49% (TC) after three stability experiments. This work offers a rational strategy to build Bi-based type II heterojunctions for the efficient photodegradation of persistent pollutants.
Publisher: Royal Society of Chemistry (RSC)
Date: 2022
DOI: 10.1039/D2NR00198E
Abstract: The traditional synthesis of ammonia is an industrial process with high energy consumption that is not environmentally friendly thus, it is urgent to develop cost-effective approaches to synthesize ammonia under ambient conditions.
Publisher: Elsevier BV
Date: 05-2022
Publisher: Royal Society of Chemistry (RSC)
Date: 2021
DOI: 10.1039/D1CY00538C
Abstract: Rec-PDI-HCl with “recombinant holes” shows the capability to form an intermolecular polarized electric field to enhance its photocatalytic properties.
Publisher: Elsevier BV
Date: 04-2020
Publisher: Elsevier BV
Date: 05-2022
DOI: 10.1016/J.JHAZMAT.2021.128195
Abstract: BiOX (X = Cl, Br and I) and BiOX/TiO
Publisher: Elsevier BV
Date: 03-2021
Publisher: Royal Society of Chemistry (RSC)
Date: 2020
DOI: 10.1039/D0QM00349B
Abstract: A sustainable visible-light-driven and efficient photodegradation system was developed via integrating a polarized electric field with novel functionalized PDI supramolecules.
Publisher: Royal Society of Chemistry (RSC)
Date: 2016
DOI: 10.1039/C6CP90287A
Publisher: Springer Science and Business Media LLC
Date: 18-12-2019
Publisher: Royal Society of Chemistry (RSC)
Date: 2016
DOI: 10.1039/C6CE00264A
Abstract: Bismuth molybdate photocatalysts with different phase structures and morphologies were controllably synthesized via a refluxing method by adjusting the pH in the reaction system.
Publisher: Elsevier BV
Date: 09-2021
Publisher: Royal Society of Chemistry (RSC)
Date: 2020
DOI: 10.1039/C9CE01966A
Abstract: The mechanism of the photocatalytic reaction of defective ZnO systems was determined.
Publisher: Elsevier BV
Date: 04-2020
DOI: 10.1016/J.SCITOTENV.2020.136594
Abstract: The increasing use of synthetic musks has led to a large amount of synthetic musks retaining in waste activated sludge (WAS) via wastewater treatment, thereby entering anaerobic digester. However, the potential effects of synthetic musks on WAS anaerobic digestion remain unknown. Herein, this study selected the dominant galaxolide (HHCB) in WAS as the typical synthetic musks and experimentally evaluated the long-term effects on WAS anaerobic digestion using continuous lab-scale anaerobic digesters as well as the mechanisms involved. The results demonstrated that the increased HHCB levels (i.e., 90, 150 and 200 mg/kg-dw) resulted in the decreased methane production, with the methane production at 200 mg/kg-dw being only 80.5 ± 0.1% of the control. Supporting the methane production data, volatile solids (VS) destruction decreased by 18.6 ± 0.9%, which increased 6.8% of volume waste sludge for transfer and disposal. Correspondingly, the microbial community was shifted in the direction against anaerobic digestion. By modeling based on biochemical methane potential tests and investigating the key stages involved in anaerobic digestion, it was found that although the HHCB showed little impacts on the solubilization, WAS hydrolysis-acidification steps was inhibited by HHCB with the decreased hydrolysis rate and methane production potential, thereby causing the deteriorated performance of WAS anaerobic digestion.
Publisher: Royal Society of Chemistry (RSC)
Date: 2022
DOI: 10.1039/D2CE00205A
Abstract: Bismuth oxyiodide and attapulgite have proven to be potential materials for the removal of emerging contaminants in wastewater.
Publisher: Elsevier BV
Date: 06-2021
Publisher: Royal Society of Chemistry (RSC)
Date: 2016
DOI: 10.1039/C6CP06122B
Abstract: SiO 2 , an insulator, hardly has any photocatalytic acitivity due to its intrinsic property, and it is generally used as a hard template to increase the surface area of catalysts.
Publisher: American Association for the Advancement of Science (AAAS)
Date: 2021
Abstract: Nitrate is a crucial environmental pollutant, and its risk on ecosystem keeps increasing. Photocatalytic conversion of nitrate to ammonia can simultaneously achieve the commercialization of environmental hazards and recovery of valuable ammonia, which is green and sustainable for the planet. However, due to the thermodynamic and kinetic energy barriers, photocatalytic nitrate reduction usually involves a higher selectivity of the formation of nitrogen that largely limits the ammonia synthesis activity. In this work, we reported a green and facile synthesis of novel metallic ruthenium particle modified graphitic carbon nitride photocatalysts. Compare with bulk graphitic carbon nitride, the optimal s le had 2.93-fold photocatalytic nitrate reduction to ammonia activity (2.627 mg/h/g cat ), and the NH 3 selectivity increased from 50.77% to 77.9%. According to the experimental and calculated results, the enhanced photocatalytic performance is attributed to the stronger light absorption, nitrate adsorption, and lower energy barrier for the generation of ammonia. This work may provide a facile way to prepare metal modified photocatalysts to achieve highly efficient nitrate reduction to ammonia.
Publisher: Royal Society of Chemistry (RSC)
Date: 2021
DOI: 10.1039/D0EN01216E
Abstract: This study used metal–organic-framework (MOF) derived In 2 O 3 for the photocatalytic degradation of PFOA for the first time. MOF derived In 2 O 3 demonstrated significantly enhanced performance for PFOA decomposition compared to commercial In 2 O 3 .
Publisher: Elsevier BV
Date: 10-2018
Publisher: Royal Society of Chemistry (RSC)
Date: 2022
DOI: 10.1039/D1CE01547H
Abstract: TOC diagram illustrates that a change in the degree of polymerization affects the intermolecular distance and promotes electron migration in the g-C 3 N 4 framework.
Publisher: Royal Society of Chemistry (RSC)
Date: 2020
DOI: 10.1039/C9MH01668F
Abstract: This review provides an up-to-date review on Bi-based nitrogen-fixation materials and future directions for the development of new Bi-based nitrogen-fixation materials under ambient conditions.
Publisher: Wiley
Date: 12-2021
Abstract: The structural advantages of metal‐organic frameworks (MOFs) can facilitate wide applications in the field of catalysis, including oxidation, hydrogenation, acetalization, transesterification, catalytic cracking, and so on. The efficiency of catalysis is closely related to the synergy between active center, auxiliary center, and microenvironment. Researchers can customize MOFs according to the needs of catalytic reactions, and many strategies were established for boosting catalytic performance. In this review, we aim to summarize and illustrate recent progress in the nanospace engineering of MOFs. Generally, MOFs were engineered mainly from the following aspects: 1) Regulation of pore size, including micropores, mesopores, and macropores. 2) Engineering of encapsulated active species, such as metal nanoparticles, quantum dots, polyoxometalates, enzymes, etc. 3) Engineering of MOFs morphology from zero dimension to three‐dimension. 4) Controllable integration of MOFs with multi‐strategies. 5) Construction of multivariate MOFs via introducing multiple or mixed organic functional groups into the existing framework. Besides, for further low cost and practical applications, challenges for MOFs as green and sustainable catalysts are also discussed.
Publisher: Elsevier BV
Date: 05-2019
Publisher: Elsevier BV
Date: 11-2020
Publisher: Royal Society of Chemistry (RSC)
Date: 2020
DOI: 10.1039/D0NJ04068A
Abstract: Defective g-C 3 N 4 nanorods enable to boots the adsorption and cleavage of N 2 molecules to achieve higher photocatalytic nitrogen fixation performance.
Publisher: Elsevier BV
Date: 10-2018
Publisher: Elsevier BV
Date: 2022
Publisher: Wiley
Date: 16-10-2020
Publisher: Elsevier BV
Date: 06-2021
Publisher: Royal Society of Chemistry (RSC)
Date: 2020
DOI: 10.1039/D0CE90054K
Publisher: Royal Society of Chemistry (RSC)
Date: 2021
DOI: 10.1039/D0CS00639D
Abstract: The present work provides a critical review of the science and technological state-of-the-art of defect engineering applied to oxide perovskites in thermocatalytic, electrocatalytic, photocatalytic, and energy-storage applications.
Publisher: Elsevier BV
Date: 12-2017
Publisher: Wiley
Date: 26-04-2022
Abstract: This work presents development of an innovative CuO/nitrogen‐doped carbon composite (CuO−C) that may be effectively applied for the modification of a glassy carbon electrode (GCE) and creation of a non‐enzymatic sensor for glucose detection. The structure of the CuO−C nanostructured material was analyzed by scanning electron microscopy, Fourier transform infrared spectroscopy, X‐ray diffraction, and atomic absorption spectroscopy. The prepared electroactive material, based on CuO including carbon structures derived from chitosan, showed excellent performance in terms of electrocatalytic oxidation of glucose. Under optimal conditions, the modified electrode displays high sensitivity (1546 μA mM −1 cm −2 ), a low detection limit (1.95 μM) and short response time (4 s).
Publisher: Elsevier BV
Date: 11-2017
Publisher: Royal Society of Chemistry (RSC)
Date: 2021
DOI: 10.1039/D1CY00803J
Abstract: Proposed scheme of the surface and interface engineering to improve the charge separation efficiency of MXene-based photocatalysts.
Publisher: Wiley
Date: 15-09-2020
Abstract: Facilitating the charge separation of semiconductor photocatalysts to increase the photocatalytic CO 2 reduction activity has become a great challenge for sustainable energy conversion. Herein, the surface halogen‐modified defect‐rich Bi 2 WO 6 nanosheets have been successfully prepared to address the aforementioned challenge. Importantly, the modification of surface with halogen atoms is beneficial for the adsorption and activation for CO 2 molecules and charge separation. These properties have been analyzed by experimental and theoretical methods. DFT calculations revealed that the modification of the Bi 2 WO 6 surface with Br atoms can decrease the formation energy of the *COOH intermediate, which accelerates CO 2 conversion. All halogen‐modified defect‐rich Bi 2 WO 6 nanosheets showed an enhanced photocatalytic CO 2 reduction activity. Specifically, Br−Bi 2 WO 6 exhibited the best CO generation rate of 13.8 μmol g −1 h −1 , which is roughly 7.3 times as high as the unmodified defect‐rich Bi 2 WO 6 (1.9 μmol g −1 h −1 ). Moreover, in the presence of a cocatalyst (cobalt phthalocyanine) and a sacrificial agent (triethanolamine), Br−Bi 2 WO 6 exhibited an even further improved CO generation rate of 187 μmol g −1 h −1 . This finding provides a new approach to optimize the CO 2 reduction pathway of semiconductor photocatalysts, which is beneficial to develop highly efficient CO 2 reduction photocatalysts.
No related grants have been discovered for Derek Hao.